Patent Application
20220005404
This disclosure is in the field digital display devices. In particular, the disclosure relates to devices for use in, and methods of, providing lighting systems for use in bioactive display systems that can provide controllable biological effects.
A wide variety of light emitting devices are known in the art including, for example, incandescent light bulbs, fluorescent lights, and semiconductor light emitting devices such as light emitting diodes (“LEDs”).
Displays for digital content can rely on arrays of pixels that produce individual color points. Displays can be backlit with a white light source, which can be LED-based, and then filtered at the pixel-level to produce colored pixels as desired. Alternatively, displays that are not based on backlighting with white light and filtering downstream can include LEDs at the pixel-level that directly emit light at each colored pixel.
There are a variety of resources utilized to describe the light produced from a light emitting device, one commonly used resource is 1931 CIE (Commission Internationale de l'Éclairage) Chromaticity Diagram. The 1931 CIE Chromaticity Diagram maps out the human color perception in terms of two CIE parameters x and y. The spectral colors are distributed around the edge of the outlined space, which includes all of the hues perceived by the human eye. The boundary line represents maximum saturation for the spectral colors, and the interior portion represents less saturated colors including white light. The diagram also depicts the Planckian locus, also referred to as the black body locus (BBL), with correlated color temperatures, which represents the chromaticity coordinates (i.e., color points) that correspond to radiation from a black-body at different temperatures. Illuminants that produce light on or near the BBL can thus be described in terms of their correlated color temperatures (CCT). These illuminants yield pleasing “white light” to human observers, with general illumination typically utilizing CCT values between 1,800K and 10,000K.
Color rendering index (CRI) is described as an indication of the vibrancy of the color of light being produced by a light source. In practical terms, the CRI is a relative measure of the shift in surface color of an object when lit by a particular lamp as compared to a reference light source, typically either a black-body radiator or the daylight spectrum. The higher the CRI value for a particular light source, the better that the light source renders the colors of various objects it is used to illuminate.
Color rendering performance may be characterized via standard metrics known in the art. Fidelity Index (Rf) and the Gamut Index (Rg) can be calculated based on the color rendition of a light source for 99 color evaluation samples (“CES”). The 99 CES provide uniform color space coverage, are intended to be spectral sensitivity neutral, and provide color samples that correspond to a variety of real objects. Rf values range from 0 to 100 and indicate the fidelity with which a light source renders colors as compared with a reference illuminant. In practical terms, the Rf is a relative measure of the shift in surface color of an object when lit by a particular lamp as compared to a reference light source, typically either a black-body radiator or the daylight spectrum. The higher the Rf value for a particular light source, the better that the light source renders the colors of various objects it is used to illuminate. The Gamut Index Rg evaluates how well a light source saturates or desaturates the 99 CES compared to the reference source.
LEDs have the potential to exhibit very high power efficiencies relative to conventional incandescent or fluorescent lights. Most LEDs are substantially monochromatic light sources that appear to emit light having a single color. Thus, the spectral power distribution of the light emitted by most LEDs is tightly centered about a “peak” wavelength, which is the single wavelength where the spectral power distribution or “emission spectrum” of the LED reaches its maximum as detected by a photo-detector. LEDs typically have a full-width half-maximum wavelength range of about 10 nm to 30 nm, comparatively narrow with respect to the broad range of visible light to the human eye, which ranges from approximately from 380 nm to 800 nm.
In order to use LEDs to generate white light, lighting systems have been provided that include two or more LEDs that each emit a light of a different color. The different colors combine to produce a desired intensity and/or color of white light. For example, by simultaneously energizing red, green and blue LEDs, the resulting combined light may appear white, or nearly white, depending on, for example, the relative intensities, peak wavelengths and spectral power distributions of the source red, green and blue LEDs. The aggregate emissions from red, green, and blue LEDs typically provide poor color rendering for general illumination applications due to the gaps in the spectral power distribution in regions remote from the peak wavelengths of the LEDs.
White light may also be produced by utilizing one or more luminescent materials such as phosphors to convert some of the light emitted by one or more LEDs to light of one or more other colors. The combination of the light emitted by the LEDs that is not converted by the luminescent material(s) and the light of other colors that are emitted by the luminescent material(s) may produce a white or near-white light.
LED lamps have been provided that can emit white light with different CCT values within a range. Such lamps utilize two or more LEDs, with or without luminescent materials, with respective drive currents that are increased or decreased to increase or decrease the amount of light emitted by each LED. By controllably altering the power to the various LEDs in the lamp, the overall light emitted can be tuned to different CCT values. The range of CCT values that can be provided with adequate color rendering values and efficiency is limited by the selection of LEDs.
The spectral profiles of light emitted by white artificial lighting can impact circadian physiology, alertness, and cognitive performance levels. Bright artificial light can be used in a number of therapeutic applications, such as in the treatment of seasonal affective disorder (SAD), certain sleep problems, depression, jet lag, sleep disturbances in those with Parkinson's disease, the health consequences associated with shift work, and the resetting of the human circadian clock. Artificial lighting may change natural processes, interfere with melatonin production, or disrupt the circadian rhythm. Blue light may have a greater tendency than other colored light to affect living organisms through the disruption of their biological processes which can rely upon natural cycles of daylight and darkness. Exposure to blue light late in the evening and at night may be detrimental to one's health. Some blue or royal blue light within lower wavelengths can have hazardous effects to human eyes and skin, such as causing damage to the retina.
Red light has been shown to have some potential benefits to biological systems and operations.
Significant challenges remain in providing LED lamps that can provide white light across a range of CCT values while simultaneously achieving high efficiencies, high luminous flux, good color rendering, and acceptable color stability. It is also a challenge to provide lighting apparatuses that can provide desirable lighting performance while allowing for the control of circadian energy performance.
The general disclosure and the following further disclosure are exemplary and explanatory only and are not restrictive of the disclosure, as defined in the appended claims. Other aspects of the present disclosure will be apparent to those skilled in the art in view of the details as provided herein. In the figures, like reference numerals designate corresponding parts throughout the different views. All callouts and annotations are hereby incorporated by this reference as if fully set forth herein.
The present disclosure provides aspects of bioactive panel systems, methods and devices including one or more LED-based lighting channels adapted to generate a first circadian stimulating energy (CSE) blue light output in a first operational mode; one or more LED-based lighting channels adapted to generate a second circadian stimulating energy which provides less-CSE output in a second operational mode; and, one or more LED-based lighting channels adapted to generate a long red and near infrared (LRNE) red light output in a third operational mode.
In some instances the CSE blue light has a first bioactive characteristic related to an associated first spectral power distribution of light generated in the first operational mode. In some instances the less-CSE blue light output has a second bioactive characteristic related to an associated second spectral power distribution of light generated in the second operational mode.
In some instances the LRNE red light output has a third bioactive characteristic related to an associated third spectral power distribution of light generated in the third operational mode. In some instances the LRNE red light output has a third bioactive characteristic related to an associated third spectral power distribution of light generated in the third operational mode.
The present disclosure provides aspects of bioactive panel systems, methods and devices including one or more LED-based lighting channels adapted to generate a first circadian stimulating energy (CSE) blue light output in a first operational mode; one or more LED-based lighting channels adapted to generate a second circadian stimulating energy which provides less-CSE output in a second operational mode; and, one or more LED-based lighting channels adapted to generate a long red and near infrared (LRNE) red light output in a third operational mode and the one or more LED-based lighting channels provide one of individual pixels in a pixel array, microLED pixels or OLED pixels. In some instances different combinations of different types of pixels are used in the first, second and third operational modes. In some instances a first type of pixel is used in the first operational mode and the first type of pixel is not used in the second operational mode. In some instances a first type of pixel is used in the first operational mode and the first type of pixel is not used in the third operational mode. In some instances the LED-based lighting channels provide one or more white light sources for a backlighting system in the panel system. In some instances the one or more white light sources are provided as white lighting channels comprising an LED and an associated luminophoric medium that a produce a combined white light at a white color point within ±7 DUV of the Planckian locus on the 1931 CIE Chromaticity Diagram. In some instances the panel system comprises two or more white lighting channels, with a first white lighting channel used in the first operational mode and a second white lighting channel used in the second operational mode.
The above disclosed panel systems and methods may be used in different combinations of different types of the plurality of lighting channels are used in a first bioactive mode and a second bioactive mode. In some instances the above described panel systems and methods provides bioactive LRNE emissions between at least one of 625 and 700 nms, 640 and 670 nms, and 700 and 1400 nms.
In some instances the above described panel systems and methods provides bioactive CSE emissions with a circadian-stimulating energy characteristic comprise one or more of the percentages of spectral power in the wavelength ranges of 470 nm<λ≤480 nm, 480 nm<λ≤490 nm, and 490 nm<λ≤500 nm in comparison to the total energy from 320 nm<λ≤800 nm in the first and second spectral power distributions, respectively.
The present disclosure provides aspects of bioactive panel systems, methods and devices including providing one of bioactive CSE and bioactive LRNE via a panel system. In some instances generating a CSE circadian-inducing blue light output in a first operational mode and a less-circadian-inducing blue light output in a second operational mode. In some instances generating a CSE circadian-inducing blue light output in a first operational mode and a LRNE red light output in a third operational mode.
The present disclosure provides aspects of methods, systems, and devices for a control system comprising: at least one external device generating a circadian stimulating energy (CSE); at least one processor; and at least one memory. The memory may store instructions that, when executed on the processor, can cause the control system to at least: output a first CSE by a first external device; receive feedback comprising external information associated with the first external device; adjust a parameter of the first external device, based on the feedback; and output a second CSE by the first external device.
In some instances, the one or more external devices can comprise a mobile device, a wearable device, a sensor, a panel system, a master device, a lighting device, and a computing system. One or more external devices may also be configured to sense one or more of temperature, pressure, ambient lighting conditions, localized lighting conditions, lighting spectrum characteristics, humidity, UV light, sound, particles, pollutants, gases, radiation, location of objects or items, and motion. In some instances, wearable device can be incorporated in at least one of armbands, wrist bands, chest bands, glasses, or clothing.
In addition, one or more external devices are configured to sense one or more of a person's temperature, blood pressure, heart rate, oxygen saturation, activity type, activity level, galvanic skin response, respiratory rate, cholesterol level (including HDL, LDL and triglyceride), hormone or adrenal levels (e.g., Cortisol, thyroid, adrenaline, melatonin, and others), histamine levels, immune system characteristics, blood alcohol levels, drug content, macro and micro nutrients, mood, emotional state, alertness, and sleepiness.
As discussed herein, the at least one external device is a panel system comprising: one or more LED-based lighting channels adapted to generate a first circadian stimulating energy (CSE) blue light output in a first operational mode; one or more LED-based lighting channels adapted to generate a second circadian stimulating energy which provides less-CSE output in a second operational mode; and, one or more LED-based lighting channels adapted to generate a long red and near infrared (LRNE) red light output in a third operational mode.
The summary, as well as the following detailed description, is further understood when read in conjunction with the appended drawings. For the purpose of illustrating the disclosure, there are shown in the drawings exemplary implementations of the disclosure; however, the disclosure is not limited to the specific methods, compositions, and devices disclosed. In addition, the drawings are not necessarily drawn to scale. In the drawings:
The present disclosure may be understood more readily by reference to the following detailed description taken in connection with the accompanying figures and examples, which form a part of this disclosure. It is to be understood that this disclosure is not limited to the specific devices, methods, applications, conditions or parameters described and/or shown herein, and that the terminology used herein is for the purpose of describing particular exemplars by way of example only and is not intended to be limiting of the claimed disclosure. Also, as used in the specification including the appended claims, the singular forms “a,” “an,” and “the” include the plural, and reference to a particular numerical value includes at least that particular value, unless the context clearly dictates otherwise. The term “plurality”, as used herein, means more than one. When a range of values is expressed, another exemplar includes from the one particular value and/or to the other particular value. Similarly, when values are expressed as approximations, by use of the antecedent “about,” it will be understood that the particular value forms another exemplar. All ranges are inclusive and combinable.
The term “circadian-stimulating energy characteristics” refers to any characteristics of a spectral power distribution that may have biological effects on a subject. In some aspects, the circadian-stimulating energy characteristics of aspects of the lighting systems of this disclosure can include one or more of CS, CLA, EML, BLH, CER, CAF, LEF, circadian power, circadian flux, and the relative amount of power within one or more particular wavelength ranges. Circadian-stimulating energy may be referred to as “CSE”. The application of CSE to biological systems in doses, amount, aliquots and volumes may be referred to as CSE therapy.
Benefits of Blue Light
Exposure to blue light including CSE affects various bio-physiological functions of the human body and may be called “bioactive”. Many of these effects are beneficial. For instance, a region of what is commonly called the blue wavelength region of light may improve memory performance and cognitive function. Exposure to blue wavelength light during memory consolidation has been shown to improve subsequent delayed memory recall when compared to placebo wavelength light exposure. Alkozei, A., Smith R., Dailey N. S., Bajaj S., & Killgore W. D. S. (2017). Acute Exposure to a quantity, volume, aliquot or dose of a specific Blue Wavelength Light During Memory Consolidation Improves Verbal Memory Performance. PLoS ONE 12(9), 1-11. Additionally, blue wavelength light may decrease blood pressure, increase blood flow, and improve overall endothelial function. Full body irradiation with blue light has been shown to promote release nitric oxide from the skin into circulating blood. As a result, systolic blood pressure and vascular resistance have been shown to decrease. Stern, M. et al. (2018). Blue Light Exposure Decreases Systolic Blood Pressure, Arterial Stiffness, and Improves Endothelial Function in Humans. European Journal of Preventive Cardiology 0(00), 1-9.
Challenges of Blue Light.
In some instances exposure to a quantity of blue light may be involved in damage in human eyes. Blue Light Hazard (BLH) is a known risk and the measure of BLH provides a measure of potential for a photochemical induced retinal injury that results from radiation exposure. Such exposure is one factor which has been linked to photoreceptor damage. It has been reported that the blue light appears to decrease Adenosine Triphosphate (ATP) energy production in retinal ganglion cells. This has a negative effect on mitochondrial function and oxidative stress which has been shown to decrease survival of ganglion cells. Tosini, G., Ferguson, I., & Tsubota, K. (2016). Effects of Blue Light on the Circadian System and Eye Physiology. Molecular Vision: Biology and Genetics in Vision Research 22, 61-72. As ganglion cells play a major role in synchronizing circadian rhythms, their destruction inhibits the eye's ability to determine length-of-day and length-of-night. Retinal ganglion cell death further leads to impaired vision. There is also increasing evidence that excessive blue light exposure may cause damage in human skin; it may contribute to wrinkles, worsening skin laxity, and pigmentation issues. Arjmandi, N., Mortazavi G. H., Zarei, S., Faraz M., & Mortazavi, S. A R. (2018). Can Light Emitted from Smartphone Screens and Taking Selfies Cause Premature Aging and Wrinkles? Journal of Biomedical and Physical Engineering 8(4), 447-452. When blue light penetrates the skin it can damage DNA, leading to inflammation, the breakdown of healthy collagen and elastin, and hyperpigmentation. Vandersee, S., Beyer, M., Lademann, J., & Darvin, M. E. (2015). Blue-Violet Light Irradiation Dose Dependently Decreases Carotenoids in Human Skin, Which Indicates the Generation of Free Radicals. Oxidative Medicine and Cellular Longevity. doi: 10.1155/2015/579675. It is also reported that excessive blue light at night negatively affects the human body's natural sleep cycle. Blue light, which inhibits melatonin production, reduces both quantity and quality of sleep.
Benefits of Long Red and Near IR.
Blue light is not the only light in the visible spectrum that can be used to affect bio-physiological functions (also referred to herein as “bioactive”) of the human body. Recent studies indicate that therapy which may include doses of long red and near-IR: Long Red typically with a spectrum of >625 nms to <700 nms with peak wavelengths >640-670 nm and Near-Infrared typical ranges from >700 nms and <1400 nm (with typical peak wavelengths: 850 nm, 940 nm, 1064 nm) may affect bio-physiological functions and are also described herein as “bioactive” they may improve eye health, skin health, hair growth, and cognitive function. The spectral sensitivity corresponding to the human eye can be considered to be based on the color-matching functions of the 1931 Standard Observer (XYZ tristimulus values for CIE 1931 2° color-matching), which show that the effect of light above 700 nm on color perception to be substantially negligible. In other words, it will have no significant impact on the overall (ccx, ccy) color point on the 1931 CIE Chromaticity Diagram of emitted light from a lighting system. In some aspects, the present disclosure relates to long red and near infrared lighting channels that can provide long red and near infrared energy (“LRNE”). Long red and near infrared channels can provide one or both of Visible LRNE and Non-Visible LRNE. Visible LRNE refers to light having spectral power in wavelengths between about 625 nm and about 700 nm. Non-Visible LRNE refers to light having spectral power in wavelengths greater than or equal to about 700 nm. The Long Red and Near Infrared Channels of the present disclosure can be part of one or more red channels involved in color-tuning and providing white light, or as separate channel that can be operated independently of color-tuning requirements. How the human eye perceives red, long red and near infrared in a given individual may vary based on a plethora of factors including but not limited to age, stimulation of eye before exposure, eye health and health in general. Accordingly, there will be an overlap between the end of long red and the beginning of near infrared. Those of ordinary skill in the art and the skilled artisan will recognize variation is narrow and does not create substantial uncertainty in the terms. Hence the terminology LRNE is encompasses the entirety of both long red and near-infrared.
Additionally, LRNE may be beneficial by reducing, limiting, counteracting or ameliorating some of the negative effects associated with excessive blue light exposure. Disclosed herein are methods and systems to provide therapeutic doses of LRNE either to address a biological condition or as a prophylactic or health supplement means to limit or prevent at least one of an emotional, neurological, immune, and biological condition or system. “Bioactive Exposure” refers to one or both of LRNE and CSE and directing at least one of LRNE and CSE at a biological system which may be a specific organ or any part of the body. In some implementations, the lighting systems can have one or more LRNE lighting channels configured to provide Visible LRNE, Non-Visible LRNE, or both Visible and Non-Visible LRNE.
The Bioactive Exposure may be controlled by a control system (described herein, see e.g.,
Disclosed herein are additional methods and systems to provide Bioactive Exposure as one of a supplement and therapeutic dose of LRNE to:
A. Lessen the effect of age-related macular degeneration by stimulating mitochondria in retinal ganglion eye cells to produce more ATP energy. (Calaza, K. C., Kam, J. H., Hogg, C., & Jeffery G. (2015) and Neurobiology of Aging 36, 2869-2876.) The increase in ATP production has been shown to slow the decline in vision associated with aging. LRNE may additionally improve the effects of glaucoma, a condition that destroys ganglion eye cells, by protecting the cornea and the retina. (Olmo-Aguado, S., Núñez-Álvarez, C., & Osborne, N. N. (2016). Red Light of the Visual Spectrum Attenuates Cell Death in Culture and Retinal Ganglion Cell Death in Situ. Acta Ophthalmologica 94, e481-e491).
B. Address a biological condition or as a prophylactic or supplement means to limit or prevent a biological condition. Examples, include but are not limited to, to prevent fluid build-up in the front of the eye, a main complication of glaucoma known to result in cell death of ganglion cells. LRNE has been shown to prevent the death of retinal ganglion cells when the optic nerve has been damaged, thereby preventing vision loss that would otherwise occur. (Kwok-Fai, S., Leung, M. C. P., & Cui, Q. (2014). Effects of Low Laser Treatment on the Survival of Axotomized Retinal Ganglion Cells in Adult Hamsters. Neural Regeneration Research 9(21), 1863-1869.)
C. improve skin health and appearance by the application of LRNE therapy. LRNE can reduce acute and chronic inflammation by increasing blood flow to damaged tissues. (Hamblin, M. R. (2017). Mechanisms and Applications of the Anti-Inflammatory Effects of Photobiomodulation. AIMS Biophysics 4(3), 337-361.) LRNE may be applied to increase natural collagen production, resulting in younger, healthier looking skin. Rats that were exposed to doses of LRN experienced an increase in collagen synthesis and neoformed bone. Brassoliatti, P. et al. (2018). Photobiomodulation on Critical Bone Defects of Rat Calvaria: A Systematic Review. Lasers in Medical Science 33(9), 1841-1848. Patients dealing with acne or depigmentation conditions, such as vitiligo, may benefit from undergoing LRN therapy, as it can control sebum production (which leads to acne), and it can stimulate melanocyte proliferation (which enhances skin re-pigmentation). Skin that has been wounded, burned, or scarred also repairs more rapidly if it is exposed to LRN, as red light significantly increases tensile strength and wound contraction while decreasing inflammation. Avci, P. et al. (2013). Low-level Laser (Light) Therapy (LLLT) in Skin: Stimulating, Healing, Restoring. Semin Cutan Medical Surgery (32)(1), 41-52.
D. A myriad of other bio-physiological function are impacted by LRNEs, including but not limited to, hair growth and cognitive function. LRNE therapy may be used in conjunction with or as an alternative treatment to hormone regulating drugs typically used to treat hair loss. LRNE exposure has been shown to be a treatment in terms of hair regrowth. Gupta, A. K., Mays, et al. (2018). Efficacy of Non-Surgical Treatments for Androgenetic Alopecia: A Systematic Review and Network Meta-Analysis. Journal of The European Academy of Dermatology and Venereology 32(12), 2112-2125. Research has also demonstrated that LRNE exposure may lead to improved cognitive function with few side effects. In one stidy, those exposed to LRNE experienced quicker reaction times, better memory, a more positive mood, and the ability to learn new information faster. These beneficial effects on the human brain may be related to LRNE's increasing cerebral blood flow and oxygen availability and boost ATP energy production. Hennessy, M., & Hamblin, M. (2017). Photobiomodulation and the Brain: A New Paradigm. Journal of Optics 19(1):013003.
E. LRNE therapy may be able to counteract, limit or ameliorate the negative effects from excessive CSE and blue light exposure. When humans absorb natural blue light from the sun, they also absorb natural red light from the sun—together the two provide numerous health benefits. However, an overload of artificial blue light such as CSE by itself may be determinantal. This damage can be mitigated through LRN exposure. Balancing and/or controlling a exposure of both artificial blue light and LRNE support wellness benefits similar to those that flow from natural, sunlight exposure.
It is to be appreciated that certain features of the disclosure which are, for clarity, described herein in the context of separate exemplar, may also be provided in combination in a single exemplary implementation. Conversely, various features of the disclosure that are, for brevity, described in the context of a single exemplary implementation, may also be provided separately or in any subcombination. Further, reference to values stated in ranges include each and every value within that range.
The 1931 CIE Chromaticity diagram is a two-dimensional chromaticity space in which every visible color is represented by a point having x- and y-coordinates, also referred to herein as (ccx, ccy) coordinates. Fully saturated (monochromatic) colors appear on the outer edge of the diagram, while less saturated colors (which represent a combination of wavelengths) appear on the interior of the diagram. The term “saturated”, as used herein, means having a purity of at least 85%, the term “purity” having a well-known meaning to persons skilled in the art, and procedures for calculating purity being well-known to those of skill in the art. The Planckian locus, or black body locus (BBL), is known to those of skill in the art and follows the color an incandescent black body would take in the chromaticity space as the temperature of the black body changes from about 1000K to 10,000 K. The black body locus goes from deep red at low temperatures (about 1000 K) through orange, yellowish white, white, and finally bluish white at very high temperatures. The temperature of a black body radiator corresponding to a particular color in a chromaticity space is referred to as the “correlated color temperature.” In general, light corresponding to a correlated color temperature (CCT) of about 2700 K to about 6500 K is considered to be “white” light. In particular, as used herein, “white light” generally refers to light having a chromaticity point that is within a 10-step MacAdam ellipse of a point on the black body locus having a CCT between 2700K and 6500K. However, it will be understood that tighter or looser definitions of white light can be used if desired. For example, white light can refer to light having a chromaticity point that is within a seven step MacAdam ellipse of a point on the black body locus having a CCT between 2700K and 6500K. The distance from the black body locus can be measured in the CIE 1960 chromaticity diagram, and is indicated by the symbol Auv, or DUV or duv as referred to elsewhere herein. If the chromaticity point is above the Planckian locus the DUV is denoted by a positive number; if the chromaticity point is below the locus, DUV is indicated with a negative number. If the DUV is sufficiently positive, the light source may appear greenish or yellowish at the same CCT. If the DUV is sufficiently negative, the light source can appear to be purple or pinkish at the same CCT. Observers may prefer light above or below the Planckian locus for particular CCT values, and light above or below the Planckian locus may be more or less suitable for use in displaying digital content on panel systems in different settings or operational modes. DUV calculation methods are well known by those of ordinary skill in the art and are more fully described in ANSI C78.377, American National Standard for Electric Lamps—Specifications for the Chromaticity of Solid State Lighting (SSL) Products, which is incorporated by reference herein in its entirety for all purposes. The CIE Standard Illuminant D65 illuminant is intended to represent average daylight and has a CCT of approximately 6500K and the spectral power distribution is described more fully in Joint ISO/CIE Standard, ISO 10526:1999/CIE 5005/E-1998, CIE Standard Illuminants for Colorimetry, which is incorporated by reference herein in its entirety for all purposes.
The color points described in the present disclosure can be within color-point ranges defined by geometric shapes on the 1931 CIE Chromaticity Diagram that enclose a defined set of ccx, ccy color coordinates. It should be understood that any gaps or openings in any described or depicted boundaries for color-point ranges should be closed with straight lines to connect adjacent endpoints in order to define a closed boundary for each color-point range.
The light emitted by a light source may be represented by a point on a chromaticity diagram, such as the 1931 CIE chromaticity diagram, having color coordinates denoted (ccx, ccy) on the X-Y axes of the diagram. A region on a chromaticity diagram may represent light sources having similar chromaticity coordinates.
The ability of a light source to accurately reproduce color in illuminated objects can be characterized using the color rendering index (“CRI”), also referred to as the CIE Ra value. The Ra value of a light source is a modified average of the relative measurements of how the color rendition of an illumination system compares to that of a reference black-body radiator or daylight spectrum when illuminating eight reference colors R1-R8. Thus, the Ra value is a relative measure of the shift in surface color of an object when lit by a particular lamp. The Ra value equals 100 if the color coordinates of a set of test colors being illuminated by the illumination system are the same as the coordinates of the same test colors being irradiated by a reference light source of equivalent CCT. For CCTs less than 5000K, the reference illuminants used in the CRT calculation procedure are the SPDs of blackbody radiators; for CCTs above 5000K, imaginary SPDs calculated from a mathematical model of daylight are used. These reference sources were selected to approximate incandescent lamps and daylight, respectively. Daylight generally has an Ra value of nearly 100, incandescent bulbs have an Ra value of about 95, fluorescent lighting typically has an Ra value of about 70 to 85, while monochromatic light sources have an Ra value of essentially zero. Light sources for general illumination applications with an Ra value of less than 50 are generally considered very poor and are typically only used in applications where economic issues preclude other alternatives. The calculation of CIE Ra values is described more fully in Commission Internationale de l'Éclairage. 1995. Technical Report: Method of Measuring and Specifying Colour Rendering Properties of Light Sources, CIE No. 13.3-1995. Vienna, Austria: Commission Internationale de l'Éclairage, which is incorporated by reference herein in its entirety for all purposes. In addition to the Ra value, a light source can also be evaluated based on a measure of its ability to render a saturated red reference color R9, also known as test color sample 9 (“TCS09”), with the R9 color rendering value (“R9 value”). Light sources can also be evaluated based on a measure of ability to render additional colors R10-R15, which include realistic colors like yellow, green, blue, Caucasian skin color (R13), tree leaf green, and Asian skin color (R15), respectively. Light sources can further be evaluated by calculating the gamut area index (“GAT”). Connecting the rendered color points from the determination of the CIE Ra value in two dimensional space will form a gamut area. Gamut area index is calculated by dividing the gamut area formed by the light source with the gamut area formed by a reference source using the same set of colors that are used for CRT. GAI uses an Equal Energy Spectrum as the reference source rather than a black body radiator. A gamut area index related to a black body radiator (“GAIBB”) can be calculated by using the gamut area formed by the blackbody radiator at the equivalent CCT to the light source.
The ability of a light source to accurately reproduce color in illuminated objects can be characterized using the metrics described in IES Method for Evaluating Light Source Color Rendition, Illuminating Engineering Society, Product ID: TM-30-15 (referred to herein as the “TM-30-15 standard”), which is incorporated by reference herein in its entirety for all purposes. The TM-30-15 standard describes metrics including the Fidelity Index (Rf) and the Gamut Index (Rg) that can be calculated based on the color rendition of a light source for 99 color evaluation samples (“CES”). The 99 CES provide uniform color space coverage, are intended to be spectral sensitivity neutral, and provide color samples that correspond to a variety of real objects. Rf values range from 0 to 100 and indicate the fidelity with which a light source renders colors as compared with a reference illuminant. Rg values provide a measure of the color gamut that the light source provides relative to a reference illuminant. The range of Rg depends upon the Rf value of the light source being tested. The reference illuminant is selected depending on the CCT. For CCT values less than or equal to 4500K, Planckian radiation is used. For CCT values greater than or equal to 5500K, CIE Daylight illuminant is used. Between 4500K and 5500K a proportional mix of Planckian radiation and the CIE Daylight illuminant is used, according to the following equation:
where Tt is the CCT value, Sr,M(λ,Tt) is the proportional mix reference illuminant, Sr,P(λ,Tt) is Planckian radiation, and Sr,D(λ,Tt) is the CIE Daylight illuminant.
Circadian illuminance (CLA) is a measure of circadian effective light, spectral irradiance distribution of the light incident at the cornea weighted to reflect the spectral sensitivity of the human circadian system as measured by acute melatonin suppression after a one-hour exposure, and CS, which is the effectiveness of the spectrally weighted irradiance at the cornea from threshold (CS=0.1) to saturation (CS=0.7). The values of CLA are scaled such that an incandescent source at 2856K (known as CIE Illuminant A) which produces 1000 lux (visual lux) will produce 1000 units of circadian lux (CLA). CS values are transformed CLA values and correspond to relative melotonian suppression after one hour of light exposure for a 2.3 mm diameter pupil during the mid-point of melotonian production. CS is calculated from
The calculation of CLA is more fully described in Rea et al., “Modelling the spectral sensitivity of the human circadian system,” Lighting Research and Technology, 2011; 0: 1-12, and Figueiro et al., “Designing with Circadian Stimulus”, October 2016, LD+A Magazine, Illuminating Engineering Society of North America, which are incorporated by reference herein in its entirety for all purposes. Figueiro et al. describe that exposure to a CS of 0.3 or greater at the eye, for at least one hour in the early part of the day, is effective for stimulating the circadian system and is associated with better sleep and improved behavior and mood.
Equivalent Melanopic Lux (EML) provides a measure of photoreceptive input to circadian and neurophysiological light responses in humans, as described in Lucas et al., “Measuring and using light in the melanopsin age.” Trends in Neurosciences, January 2014, Vol. 37, No. 1, pages 1-9, which is incorporated by reference herein in its entirety, including all appendices, for all purposes. Melanopic lux is weighted to a photopigment with max 480 nm with pre-receptoral filtering based on a 32 year old standard observer, as described more fully in the Appendix A, Supplementary Data to Lucas et al. (2014), User Guide: Irradiance Toolbox (Oxford 18th October 2013), University of Manchester, Lucas Group, which is incorporated by reference herein in its entirety for all purposes. EML values are shown in the tables and Figures herein as the ratio of melanopic lux to luminous flux, with luminous flux considered to be 1000 lumens. It can be desirable for biological effects on users to provide illumination having higher EML in the morning, but lower EML in the late afternoon and evening.
Blue Light Hazard (BLH) provides a measure of potential for a photochemical induced retinal injury that results from radiation exposure. Blue Light Hazard is described in IEC/EN 62471, Photobiological Safety of Lamps and Lamp Systems and Technical Report IEC/TR 62778: Application of IEC 62471 for the assessment of blue light hazard to light sources and luminaires, which are incorporated by reference herein in their entirety for all purposes. A BLH factor can be expressed in (weighted power/lux) in units of μW/cm2/lux.
In some aspects the present disclosure relates to lighting devices and methods to provide light having particular vision energy and circadian energy performance. Many figures of merit are known in the art, some of which are described in Ji Hye Oh, Su Ji Yang and Young Rag Do, “Healthy, natural, efficient and tunable lighting: four-package white LEDs for optimizing the circadian effect, color quality and vision performance,” Light: Science & Applications (2014) 3: e141-e149, which is incorporated herein in its entirety, including supplementary information, for all purposes. Luminous efficacy of radiation (“LER”) can be calculated from the ratio of the luminous flux to the radiant flux (S(λ)), i.e. the spectral power distribution of the light source being evaluated, with the following equation:
Circadian efficacy of radiation (“CER”) can be calculated from the ratio of circadian luminous flux to the radiant flux, with the following equation:
Circadian action factor (“CAF”) can be defined by the ratio of CER to LER, with the following equation:
The term “blm” refers to biolumens, units for measuring circadian flux, also known as circadian lumens. The term “lm” refers to visual lumens. V(λ) is the photopic spectral luminous efficiency function and C(λ) is the circadian spectral sensitivity function. The calculations herein use the circadian spectral sensitivity function, C(λ), from Gall et al., Proceedings of the CIE Symposium 2004 on Light and Health: Non-Visual Effects, 30 Sep.-2 Oct. 2004; Vienna, Austria 2004. CIE: Wien, 2004, pp 129-132, which is incorporated herein in its entirety for all purposes. By integrating the amount of light (milliwatts) within the circadian spectral sensitivity function and dividing such value by the number of photopic lumens, a relative measure of melatonin suppression effects of a particular light source can be obtained. A scaled relative measure denoted as melatonin suppressing milliwatts per hundred lumens may be obtained by dividing the photopic lumens by 100. The term “melatonin suppressing milliwatts per hundred lumens” consistent with the foregoing calculation method is used throughout this application and the accompanying figures and tables. The melatonin suppression index (MSI) of a light source can be calculated from the ratio of the integration of cross product constant lumen spectrum of lamp with melatonin suppression action spectrum in wavelength range 380 nm to 780 nm to the integration of cross product of constant lumen spectrum of Day light spectrum at 6500K with melatonin suppression action spectrum in 380 nm to 780 nm region. The function melatonin suppression action spectrum, “MSAS” or M(λ), is defined by Thapan K, “An action spectrum for melatonin suppression: evidence for a novel non-rod, non-cone photoreceptor system in humans”, Journal of Physiology, 2001, 535: 261-267, which is incorporated herein for all purposes.
The ability of a light source to provide illumination that allows for the clinical observation of cyanosis is based upon the light source's spectral power density in the red portion of the visible spectrum, particularly around 660 nm. The cyanosis observation index (“COI”) is defined by AS/NZS 1680.2.5 Interior Lighting Part 2.5: Hospital and Medical Tasks, Standards Australia, 1997 which is incorporated by reference herein in its entirety, including all appendices, for all purposes. COI is applicable for CCTs from about 3300K to about 5500K, and is preferably of a value less than about 3.3. If a light source's output around 660 nm is too low a patient's skin color may appear darker and may be falsely diagnosed as cyanosed. If a light source's output at 660 nm is too high, it may mask any cyanosis, and it may not be diagnosed when it is present. COI is a dimensionless number and is calculated from the spectral power distribution of the light source. The COI value is calculated by calculating the color difference between blood viewed under the test light source and viewed under the reference lamp (a 4000 K Planckian source) for 50% and 100% oxygen saturation and averaging the results. The lower the value of COI, the smaller the shift in color appearance results under illumination by the source under consideration.
The ability of a light source to accurately reproduce color in illuminated objects can be characterized by the Television Lighting Consistency Index (“TLCI-2012” or “TLCI”) value Qa, as described fully in EBU Tech 3355, Method for the Assessment of the Colorimetric Properties of Luminaires, European Broadcasting Union (“EBU”), Geneva, Switzerland (2014), and EBU Tech 3355-s1, An Introduction to Spectroradiometry, which are incorporated by reference herein in their entirety, including all appendices, for all purposes. The TLCI compares the test light source to a reference luminaire, which is specified to be one whose chromaticity falls on either the Planckian or Daylight locus and having a color temperature which is that of the CCT of the test light source. If the CCT is less than 3400 K, then a Planckian radiator is assumed. If the CCT is greater than 5000 K, then a Daylight radiator is assumed. If the CCT lies between 3400 K and 5000 K, then a mixed illuminant is assumed, being a linear interpolation between Planckian at 3400 K and Daylight at 5000 K. Therefore, it is necessary to calculate spectral power distributions for both Planckian and Daylight radiators. The mathematics for both operations is known in the art and is described more fully in CIE Technical Report 15:2004, Colorimetry 3rd ed., International Commission on Illumination (2004), which is incorporated herein in its entirety for all purposes.
Panel Systems
Aspects of the present disclosure relate to panels (e.g. vertical panels in walls, partitions, horizontal panels in ceiling, floors, or other panel types) with at least one of LRNE and CSE lighting systems. A system which can provide Bioactive Exposure may be referred to as a bioactive panel and/or as “panel systems”, that are controlled to suit a user's needs. The vertical panel control/settings may be based on information about the user, such as sensor information drawn from the user, social media activity related to the user, sleep state information, exercise information, work schedule, medical needs, psychological needs, physiological needs, etc. (e.g. also as described in more detail herein). A bioactive panel may be in any number of forms. Such forms may be panels that are standalone or integrated into other systems. A standalone version may be portable, which may be battery operated or plug in. An integrated panel system may take the form of a panel in an office cube system where it can be installed as a dividing panel in the cube. It may also be built to be integrated into a wall, such as a wooden wall, sheetrock wall, mount to a wood stud, mount to a metal stud, cement wall, stone wall, etc. It may be built to be integrated into the headboard or footboard of a bed. A vertical panel that incorporates a biaoctive panel may be edge lit, backlit, front lit, etc. The bioactive panel may be controlled by a control system described herein which uses processors and input data to adjust at least one of CSE and LRNE.
In some embodiments, the disclosure relates to bioactive panel systems including lighting systems that are adapted to produce emissions of Bioactive Exposure and display color(s) at the pixel level that are bioactive. In some instance the bioactivity may be in first bioactive mode and a second bioactive mode. One mode providing bioactive CSE and another mode providing LRNE.
The bioactive panel may be controlled by a control system described herein which uses processors and input data to adjust at least one first bioactive mode, second bioactive mode, CSE and LRNE. The lighting systems for pixels of the panel systems may be arranged to produce colors of the pixels in the display that effect the circadian rhythm over the course of time. The lighting systems of the bioactive panel systems may be adapted to generate a first bioactive mode CSE blue wavelength of light (e.g. cyan, energy at and/or near 485 nm) that causes activity associated with ‘waking’ the person through the circadian cycle (e.g. effecting, causing, or maintaining a wakeful and alert state in the viewer by enabling melatonin suppression by exciting the Intrinsically photosensitive retinal ganglion cells (ipRGCs)). It may also be adapted to reduce the circadian inducing blue frequency over time to reduce the ‘waking’ effect. The lighting systems of the panel systems may further be adapted with two or more separate blue frequencies such that either or both may be used to generate the blue in the pixels of the display. One of the blue frequencies may be a standard blue color (e.g. substantial energy around approximately 450 nm, a narrow band emission around approximately 450 nm) such that the display pixels of the panel systems generate standard display colors and another blue frequency may be a circadian inducing blue (e.g. a cyan emission, substantial energy around approximately 485 nm, a narrow or broad band emission around approximately 485 nm) that is designed to effect the circadian rhythm in a more significant way by waking the person. With such panel systems, the lighting systems contained therein can have pixel colors that can be changed from standard colors to represent colors accurately, according to display color standards, to display colors that are similar but not necessarily standard colors to generate an effect of the person's circadian rhythm. While the non-standard blue pixels may not be standard and may not display computer-generated or other digital content in accordance with a standard color palette, in many situations the colors may be acceptable by a user because the colors may still be acceptable while also inducing a circadian rhythm to awaken the person while using the display in the special color mode. A bioactive panel may provide first second bioactive mode wherein LRNE is emitted to induced biological response or effects and/or to counteract or ameliorate the effect of excessive CSE.
In certain aspects, the present disclosure relates to circadian-inducing blue wavelengths of light that may be produced by one or more components, such as lighting channels comprising one or more LEDs, of the bioactive panel systems. The circadian-inducing blue may have significant energy at a longer wavelength than a typical blue used in a display. The inventors have appreciated that longer wavelengths in the blue and cyan regions (e.g. wavelengths between the typical display blue and typical display green) can be used to both generate acceptable colors in the computer-generated content and also have a greater effect on a person's circadian rhythm. In some embodiments, the energy may be provided in a narrow band (e.g. a typical LED narrow band emission spectra with a maximum energy between 460 nm and 500 nm, 460 nm and 480 nm, 470 nm and 480 nm, or 490 nm and 500 nm). In embodiments, the energy may be more broadly spread (e.g. through the use of a phosphor or quantum dot structure in a luminophoric medium that up- or down-converts at least a portion of the wavelengths of light from an LED) such that there is significant energy produced in the region between 460 nm and 500 nm. In such broad width systems the maximum energy may or may not fall within the 460 nm to 500 nm region. For example, the peak may be at or near the typical display blue of 450 nm and also have significant energy in the 460 nm to 500 nm region. The significant energy may be an intensity of more than 10%, 20%, 30%, 40%, or 50% of the maximum energy. That significant energy may fall within the regions of 460 and 470 nm, 470 nm and 480 nm, or 490 nm and 500 nm for example. In some embodiments the LRNE may be provided in a narrow band Long Red emission spectra with a maximum energy between ≥640 and ≥670 nms. In some embodiments the LRNE may be provided in a narrow band Near-Infrared emission spectra with peak wavelengths of at least one of 850 nm, 940 nm, and 1064 nm.
In some aspects, the present disclosure relates to Equivalent Melanopic Lux (EML), which provides a measure of photoreceptive input to circadian and neurophysiological light responses in humans, as described in Lucas et al., “Measuring and using light in the melanopsin age.” Trends in Neurosciences, January 2014, Vol. 37, No. 1, pages 1-9, which is incorporated by reference herein in its entirety, including all appendices, for all purposes. Melanopic lux is weighted to a photopigment with λmax 480 nm with pre-receptoral filtering based on a 32 year old standard observer, as described more fully in the Appendix A, Supplementary Data to Lucas et al. (2014), User Guide: Irradiance Toolbox (Oxford 18 Oct. 2013), University of Manchester, Lucas Group, which is incorporated by reference herein in its entirety for all purposes. EML values are shown in the tables and Figures herein as the ratio of melanopic lux to luminous flux, with luminous flux considered to be 1000 lumens. It can be desirable for biological effects on users to provide illumination having higher EML in the morning, but lower EML in the late afternoon and evening.
In some implementations of the disclosure, the bioactive panel systems can include a micro-LED array where the micro-LED array includes a pixel array formed of micro-LEDs that generate light at various wavelengths, such as an LED producing a peak wavelength in a blue wavelength (referred to herein as a “blue LED”). In embodiments, the blue LED may produce a circadian-inducing blue light (as described herein). If only three colors are arranged in the pixel array, the circadian-inducing blue for the pixel may not fall within the standard color gamut for the panel system but will generally generate acceptable colors while affecting the circadian rhythm. In embodiments, the pixel array includes two different color generating blue LEDs, one with a standard color for the display and one that may not be within the standard color gamut for display but that is adapted to effect the circadian rhythm to induce a waking effect. This arrangement would include four colors per pixel in the pixel array of the micro-LED array. In some embodiments, the panel systems include only a portion of micro-LEDs with the circadian rhythm effecting blue. The micro-LED pixels may be built with different color generating LEDs, white LEDs with filters, LEDs with phosphors, etc. The bioactive panel may be controlled by a control system described herein which uses processors and input data to adjust at least one of CSE and LRNE.
In some implementations of the disclosure, the bioactive panel systems can include a micro-LED array where the micro-LED array includes a pixel array formed of micro-LEDs that generate light at various wavelengths, such as an LED producing a peak wavelength in a red wavelength (referred to herein as a “red LED”). In embodiments, the red LED may produce a long red with a energy between with a maximum energy between ≥640 and ≥670 nms. In some embodiments the LRNE may be provided in a narrow band Near-Infrared emission spectra with peak wavelengths of at least one of 850 nm, 940 nm, and 1064 nm. If only three colors are arranged in the pixel array, the long red pixel may not fall within the standard color gamut for the panel system, utilizing Long Red will generally generate acceptable colors while having bioactivity associated with LRNE. In embodiments, the pixel array includes two different color generating red LEDs, one with a standard color for the display and one that may not be within the standard color gamut for display but that is adapted to apply the bioactive LRNE. This arrangement using Near-Infrared LRNE would include additional red colors per pixel in the pixel array of the micro-LED array. In some embodiments, the panel systems include only a portion of micro-LEDs with the LRNE bioactive LEDs, The micro-LED pixels may be built with different color generating LEDs, white LEDs with filters, LEDs with phosphors, etc. The bioactive panel may be controlled by a control system described herein which uses processors and input data to adjust at least one of CSE and LRNE.
In some embodiments, the circadian-inducing blue microLEDs of the disclosure may have a narrow emission characteristic where substantially all of the energy is produced over about 120 nm the emitted light may have a half max width of approximately 40 nm or so.
A standard color digital display system may use a blue LED with a narrow emission characteristic, such as is illustrated in
In some implementations of the present disclosure, panel systems can include an LCD backlit pixel array. Generally, an LCD backlit display has a backlight that generates a broadband of colors (e.g. white LEDs, white fluorescent) or one that generates narrow bands of color (e.g. red, green, and blue LEDs). Manufactures have typically adopted an arrangement where the backlight is a broadband white LED based system and each pixel of the LCD array is associated with a colored filter (e.g. red, green and blue) to produce the full color gamut for each pixel of the display. In embodiments of the present disclosure, the LCD pixel arrays in the panel systems include filters to produce three colors per pixel based on a backlighting system that produces white light. The pixel filters filter the white light into red, green and blue. The backlight also generally produces a constant amount of light and the LCD's at each sub pixel color are changed to regulate the intensity of the color of the sub pixel (e.g. 256 steps based on a polarization setting at the sub pixel level). In some embodiments, the blue filter is adapted to transmit CSE region of light that is more effective at affecting the circadian rhythm (e.g. 485 nm). In some embodiments, each pixel includes a fourth filter for a fourth sub pixel color. The fourth pixel can use a circadian blue pass filter such that light transmitting the sub pixel filter affects the circadian cycle in a more significant way than light passing through a standard blue filter in the pixel array. With the fourth filter configuration, the panel systems may be set to use one and/or the other color of blue to form the blue in the pixels. In some embodiments, a red filter is adapted to transmit LRNE region of light that is more bioactive. In some embodiments, each pixel includes a fourth filter for a fourth sub pixel color. The fourth pixel can use a red pass filter such that light transmitting through the sub pixel filter applies a narrower band of LRNE in a more significant way than light passing through a standard red filter in the pixel array. With the fourth filter configuration, the panel systems may be set to use one and/or the other color of red to form the red in the pixels.
In other some, backlighting systems within the panel systems produce red, green, and blue in a sequence and only one LCD is used per pixel position such that the one LCD will turn on in sequence with the desired corresponding required color for the pixel. The sequential lighting system may then include a CSE blue color to affect the circadian rhythm. The sequential lighting system within the backlighting systems may further include two different colors of blue (e.g. standard blue and circadian-inducing blue) and the sequence cycles through all four colors. In some embodiments, the circadian-inducing blue color may or may not be included in every cycle of the sequence. Reducing the number of cycles involved may have an effect on the perceived combined color of the pixel and of the effect of the circadian rhythm.
In some embodiments, backlighting systems within the panel systems produce red, green, and blue in a sequence and only one LCD is used per pixel position such that the one LCD will turn on in sequence with the desired corresponding required color for the pixel. The sequential lighting system may then include a LRNE red color to apply bioactive light. The sequential lighting system within the backlighting systems may further include two different colors of red (e.g. standard red and LRNE red) and the sequence cycles through all four colors. In embodiments, the LRNE red may or may not be included in every cycle of the sequence. Reducing the number of cycles involved may have an effect on the perceived combined color of the pixel and of the effect of the LRNE. LRNE generally includes two regions of light as indicated in
In some embodiments both the CSE and LRNE additional pixels are combined in the same device and are sequenced independently in response to a control system. However, it will be understood by one of ordinary skill in the art and the skilled artisan that all bioactive panels with one or more CSE and/or LRNE outputs as described herein may be controlled by control systems described herein
In some embodiments of the panel systems of the present disclosure, in LCD configuration(s) the backlight may be modified to include enhanced emission at the circadian-inducing blue region. For example, a cyan LED may be included in the backlight itself such that it produces enough emission in the circadian blue region that it can generate adequate color to display visual digital content and affect the person's circadian rhythm. The backlight may include a broadband emission source (e.g. as illustrated in
In certain implementations, the panel systems may include an OLED pixel array where the OLED array includes a pixel array formed of OLED sub pixels. The OLEDs may include red, green, and blue generating OLEDs. In other embodiments, the OLEDs may produce white light and include filters to pass only the particular color desired for the sub pixel. In embodiments, the blue OLED or filter may be adapted to produce a circadian-inducing blue. If only three colors are arranged in the pixel array, the blue for the pixel may not fall within the standard color for the display but will generally generate acceptable colors while affecting the circadian rhythm. In embodiments, the pixel array may include two different color blue OLEDs, one with a standard color for the display and one that may not be within the standard color gamut for display but that is adapted to affect the circadian rhythm wake cycle via a circadian-inducing blue. This arrangement would include four colors per pixel in the pixel array of the OLED array. In embodiments, the panel systems utilize only a portion of OLEDs with the circadian-inducing blue. In the OLED array multiple red pixels may also be deployed wherein at least one LRNE red is include.
In embodiments, the circadian-inducing blue OLED may produce a broadband of light in the region and be filtered. In embodiments, the circadian-inducing blue OLED may produce a narrow band emission and possibly be filtered or not.
A microLED based display panel may be based on an array of microLED pixels 200. Each microLED pixel 200 in the area of the display may include different color producing microLEDs 200, electrodes 208 to power and control each microLED in each pixel, and a substrate 208. Each of the microLEDs may emit light of a particular color based on the materials used in the construction of the microLED. As a secondary example, the microLED(s) may be arranged to irradiate a phosphor for color conversion or they may be arranged to transmit light through a filter. In embodiments, the microLEDs in the pixel may be red, green and circadian blue. The circadian blue may be a blue outside of the normal blue gamut that is used in a display. It may be a blue with spectral characteristics of the circadian lighting systems disclosed herein. In a configuration where only three colors are included in the pixel, the color gamut of the display may always be outside of the standard display gamut. This may be acceptable to a user that is less concerned about the exact color of displayed content and more concerned with receiving a light that effects the user's circadian rhythm while still having reasonable colors produced. In another embodiment, the pixel may include four colors: red, green, standard display blue and circadian blue. This configuration lends itself to a control system that can switch between the standard blue and the circadian blue. The circadian blue may be used in the morning hours, for example, and then the display may switch to the standard blue in later hours. In yet later hours, the standard blue may be turned down to further reduce the stimulation of the circadian rhythm. The two blues may fade in and out in a synchronized fashion. Both may be on at one time to reduce the circadian blue as the system transitions to the standard blue
An OLED based display panel may be based on an array of OLED pixels 230. The OLED pixel 230 may have three separately controllable OLEDs 212 in each pixel. Each one may emit a similar color (e.g. white) and each one may be optically associated with a different colored filter 211 to generate red, green and circadian blue. In an alternate construction, each OLED emitter may generate it's own color (e.g. through a different material, through a phosphor conversion). Each OLED pixel may be constructed with electrodes 214 to power and control each color and a substrate 216. In embodiments, the color set includes a circadian blue (e.g. as described herein). In embodiments, the color set has only three colors, including the circadian blue, and the display produces colors outside of the standard display color gamut. In embodiments, the color set has four colors, including a standard blue and a circadian blue, such that a control system could choose which blue to activate and control as described herein.
As shown schematically in
In some embodiments, the red filter in the color filter layer 210 is a LRNE red color filter. In some embodiments, the filter layer 210 includes two red filters, associated with two separate liquid crystals: one for LRNE and one for the standard display red. In embodiments, the color set includes a LRNE emission (e.g. as described herein). In some embodiments, the filter color set has only three colors, including the LRNE and the display produces colors outside of the standard display color gamut. In embodiments, the filter color set has four colors, including a standard red and a LRNE emission such that a control system could choose which red to activate and control.
As shown schematically in
A bioactive panel may also be controlled to create lighting effects that are soothing to a person (e.g. bio-mimicking effects). These effects may simulate the flicker of light on water, flicker of a candle, light being effected as it passes around and through leaves of a tree moving in the wind, etc. Subtle intensity, color and directionality variations could be introduced in a planar distributed source of light to recreate similar effects. These effects may be generated by controlling the lighting system 400 itself and/or through a controllable optical system.
Lighting systems that may be used in panel systems in accordance with the principles of the present inventions include, for example, 2-channel, 3-channel, 4-channel, 5-channel, or 6-channel LED-based color-tuning systems. Individual channels within the multi-channel systems may have particular color points and spectral power distributions for the light output generated by the channel. As used herein, the term “channel” refers to all the components in a light-generating pathway from an LED (microLED, OLED) through any filtering or other components until the light exits the panel system.
In some implementations, 2-channel systems can be used having two white light channels. The two white light channels can be those described more fully in U.S. Provisional Patent Application No. 62/757,664, filed Nov. 8, 2018, entitled “Two-Channel Tunable Lighting Systems with Controllable Equivalent Melanopic Lux and Correlated Color Temperature Outputs,” and International Patent Application No. PCT/US2019/013356, filed Jan. 11, 2019, entitled “Two-Channel Tunable Lighting Systems With Controllable Equivalent Melanopic Lux and Correlated Color Temperature Outputs,” the entirety of which is incorporated herein for all purposes.
In some aspects, the present disclosure provides for panel systems that incorporate two white lighting channels, which can be referred to herein as a first lighting channel and a second lighting channel. The white lighting channels can be used to backlight a panel system that utilizes color filtering in order to generate a digital display.
First Lighting Channels
In some aspects, the present disclosure provides first lighting channels for use in lighting systems. The first lighting channels can have first color points with CCT values between about 4000K and about 6500K. In some implementations, the first color point can have a CCT of about 4000K. In certain implementations, the first color point can have a CCT of about 4000K, about 4100K, about 4200K, about 4300K, about 4400K, about 4500K, about 4600K, about 4700K, about 4800K, about 4900K, about 5000K, about 5100K, about 5200K, about 5300K, about 5400K, about 5500K, about 5600K, about 5700K, about 5800K, about 5900K, about 6000K, about 6100K, about 6200K, about 6300K, about 6400K, or about 6500K.
In some implementations, the first lighting channel can have one or more LEDs having an emission with a first peak wavelength of between about 440 nm and about 510 nm. In certain implementations, the first lighting channel can have one or more LEDs having an emission with a first peak wavelength of about 450 nm.
In some implementations, the first lighting channel can have a first color point with a CCT value of about 4000K. The first lighting channel can have a first color point with a color-point range 304A can be defined by a polygonal region on the 1931 CIE Chromaticity Diagram defined by the following ccx, ccy color coordinates: (0.4006, 0.4044), (0.3736, 0.3874), (0.3670, 0.3578), (0.3898, 0.3716), which correlates to an ANSI C78.377-2008 standard 4000K nominal CCT white light with target CCT and tolerance of 3985±275K and target duv and tolerance of 0.001±0.006, as more fully described in American National Standard ANSI C78.377-2008, “Specifications for the Chromaticity of Solid State Lighting Products,” National Electrical Manufacturers Association, American National Standard Lighting Group, which is incorporated herein in its entirety for all purposes. In some implementations, suitable color-point ranges for the first color point can be described as MacAdam ellipse color ranges in the 1931 CIE Chromaticity Diagram color space, as illustrated schematically in
In some implementations, the first lighting channel can have certain spectral power distributions. Some aspects of some exemplary first lighting channels are shown in Table 44. Aspects of the spectral power distributions for the exemplary first lighting channels shown in Table 44 and an average of the exemplary first lighting channels (shown as “Exemplary 1st channels avg”) are provided in Tables 46, 48, 50, 52, and 53, which show the ratios of spectral power within wavelength ranges, with an arbitrary reference wavelength range selected for each exemplary first lighting channel or average thereof and normalized to a value of 100.0, except for Table 53, in which the values are normalized to a value of 1.000. In certain implementations, the first lighting channel can have a first spectral power distribution with spectral power in one or more of the wavelength ranges other than the reference wavelength range increased or decreased within 30% greater or less, within 20% greater or less, within 10% greater or less, or within 5% greater or less than the values shown in Tables 46, 48, 50, 52, and 53. In some implementations, the first lighting channel can have a spectral power distribution that falls between the minimum (shown as “min”) and maximum (shown as “max”) values in each of the wavelength ranges as shown in one or more of the Tables 46, 48, 50, 52, and 53. In further implementations, the first lighting channel can have a spectral power distribution that falls between values 5% less, 10% less, 20% less, or 30% less than the minimum (shown as “min”) and values 5% more, 10% more, 20% more, or 30% more than the maximum (shown as “max”) values in each of the wavelength ranges as shown in one or more of the Tables 46, 48, 50, 52, and 53.
In some aspects, the first lighting channel can have a first white light having a first color point with a CCT and EML value that falls within a range of possible pairings of CCT and EML values, also referred to herein as a CCT-EML range. A suitable CCT-EML range 1710 for first lighting channels of the present disclosure is shown graphically in
Second Lighting Channels
In some aspects, the present disclosure provides second lighting channels for use in lighting systems. The second lighting channels can have second color points with CCT values between about 1800K and about 2700K. In some implementations, the first color point can have a CCT of about 2400K. In some implementations, the first color point can have a CCT of about 1800K, about 1900K, about 2000K, about 2100K, about 2200K, about 2300K, about 2400K, about 2500K, about 2600K, or about 2700K.
In some implementations, the second lighting channel can have one or more LEDs having an emission with a second peak wavelength of between about 380 nm and about 420 nm. In certain implementations, the second lighting channel can have one or more LEDs having an emission with a second peak wavelength of about 410 nm. In some aspects, the use of a different peak wavelength for the LEDs in the second lighting channel in comparison to the LEDs in the first lighting channel can contribute to the desired performance of the lighting systems of the disclosure.
In some implementations of the present disclosure, the second lighting channel can produce light having a second color point within a suitable color-point range. In certain implementations, the second color point can be within the color-point ranges described in Table 57 for the selected boundary for each nominal CCT value. In some implementations, the second color point can be within a color-point range defined by a region bounded by a polygon connecting the (ccx, ccy) coordinates on the 1931 CIE Chromaticity Diagram of (0.4593, 0.3944), (0.5046, 0.4007), (0.5262 0.4381), and (0.4813 0.4319). In further implementations, the second color point can be within a color-point range defined by a region bounded by a 4-step MacAdam ellipse centered at 2370K CCT value and duv=−0.3. In yet further implementations, the second color point can be within a color-point range defined by a region bounded by a polygon connecting the (ccx, ccy) coordinates on the 1931 CIE Chromaticity Diagram of (0.4745, 0.4025), (0.4880, 0.4035), (0.5036, 0.4254), (0.4880, 0.4244).
In some implementations, the second lighting channel can have certain spectral power distributions. Some aspects of some exemplary second lighting channels are shown in Table 44. Aspects of the spectral power distributions for the exemplary second lighting channels shown in Table 44 and an average of the exemplary second lighting channels (shown as “Exemplary 2nd channels avg”) are provided in Tables 45, 47, 49, 51, and 53, which show the ratios of spectral power within wavelength ranges, with an arbitrary reference wavelength range selected for each exemplary second lighting channel or average thereof and normalized to a value of 100.0, except for Table 53, in which the values are normalized to a value of 1.000. In certain implementations, the second lighting channel can have a spectral power distribution with spectral power in one or more of the wavelength ranges other than the reference wavelength range increased or decreased within 30% greater or less, within 20% greater or less, within 10% greater or less, or within 5% greater or less than the values shown in one or more of Tables 45, 47, 49, 51, and 53. In some implementations, the second lighting channel can have a spectral power distribution that falls between the minimum (shown as “min”) and maximum (shown as “max”) values in each of the wavelength ranges as shown in one or more of the Tables 45, 47, 49, 51, and 53. In further implementations, the second lighting channel can have a spectral power distribution that falls between values 5% less, 10% less, 20% less, or 30% less than the minimum (shown as “min”) and values 5% more, 10% more, 20% more, or 30% more than the maximum (shown as “max”) values in each of the wavelength ranges as shown in one or more of the Tables 45, 47, 49, 51, and 53. FIG. 7 depicts a spectral power distribution 1100 for the exemplary lighting channel “2400K Ch2” listed in Table 44 and further characterized elsewhere herein.
In some implementations, the 3-channel LED-based color-tuning systems can include channels as described in U.S. Provisional Patent Application No. 62/712,182 filed Jul. 30, 2018, and U.S. Provisional Patent Application No. 62/757,672, filed Nov. 8, 2018, entitled “Switchable Systems for White Light with High Color Rendering and Biological Effects,” which is incorporated herein in its entirety for all purposes.
In certain implementations, the 4-channel, 5-channel, and 6-channel LED-based color tuning systems can include channels as described more fully in U.S. Provisional Patent Application No. 62/757,672, filed Nov. 8, 2018, entitled “Switchable Systems for White Light with High Color Rendering and Biological Effects,” which is incorporated herein in its entirety for all purposes.
In some implementations, panel systems can comprise standard lighting channels for red, blue, and green color points used in digital panel systems known to those of skill in the art, such as those described herein and shown in
In some implementations, the cyan light channels can have spectral power distributions. Tables 1-4 show the ratios of spectral power within wavelength ranges, with an arbitrary reference wavelength range selected for each color range and normalized to a value of 100.0. In certain implementations, the spectral power distribution of a cyan light channel falls between minimum and maximum values in particular wavelength ranges relative to an arbitrary reference wavelength range. In some implementations, the short-blue-pumped cyan can fall within the values between Short-blue-pumped cyan minimum 1 and Short-blue-pumped cyan maximum 1 in the wavelength ranges shown in Table 1, Table 2, or both Tables 1 and 2. In other implementations, the short-blue-pumped cyan can fall within the values between Short-blue-pumped cyan minimum 1 and Short-blue-pumped cyan maximum 2 in the wavelength ranges shown in Table 1. In some implementations, the Long-Blue-Pumped Cyan lighting channel can produce light with spectral power distribution that falls within the values between Long-Blue-Pumped Cyan minimum 1 and Long-Blue-Pumped Cyan maximum 1 in the wavelength ranges shown in Table 1, Table 2, or both Tables 1 and 2. Tables 3 and 4 show the ratios of spectral power within wavelength ranges, with an arbitrary reference wavelength range selected for the short-blue-pumped cyan color range and normalized to a value of 100.0, for a short-blue-pumped cyan channel that may be used in some implementations of the disclosure. The exemplary Short-blue-pumped cyan Channel 1 has a ccx, ccy color coordinate shown in Table 5. In certain implementations, the short-blue-pumped cyan channel can have a spectral power distribution with spectral power in one or more of the wavelength ranges other than the reference wavelength range increased or decreased within 30% greater or less, within 20% greater or less, within 10% greater or less, or within 5% greater or less than the values shown in Table 3 or 4. In some implementations, the long-blue-pumped cyan channel can produce cyan light having certain spectral power distributions. Tables 3 and 4 shows ratios of spectral power within wavelength ranges, with an arbitrary reference wavelength range selected for the long-blue-pumped cyan color range and normalized to a value of 100.0, for several non-limiting embodiments of the long-blue-pumped cyan channel. The exemplary Long-blue-pumped cyan Channel 1 has a ccx, ccy color coordinate Shown in Table 5. In certain implementations, the long-blue-pumped cyan channel can have a spectral power distribution with spectral power in one or more of the wavelength ranges other than the reference wavelength range increased or decreased within 30% greater or less, within 20% greater or less, within 10% greater or less, or within 5% greater or less than the values shown in Table 3 and 4.
Blue Channels
In some implementations of the present disclosure, lighting systems can include blue channels that produce light with a blue color point that falls within a blue color range. In certain implementations, suitable blue color ranges can include blue color ranges 301A-F.
In certain implementations, the cyan lighting channels described herein, including short-blue-pumped cyan channels and long-blue-pumped cyan channels as described herein, can generate light outputs with cyan color points that fall within a cyan color range. In certain implementations, suitable cyan color ranges can include cyan color ranges 303A-E, which can be seen in
In some implementations, the LEDs in the cyan color channels can be LEDs with peak emission wavelengths at or below about 535 nm. In some implementations, the LEDs emit light with peak emission wavelengths between about 360 nm and about 535 nm. In some implementations, the LEDs in the cyan color channels can be formed from InGaN semiconductor materials. In some implementations, the LEDs used in the long-blue-pumped cyan channels can be LEDs having peak emission wavelengths between about 360 nm and about 535 nm, between about 380 nm and about 520 nm, between about 470 nm and about 505 nm, about 480 nm, about 470 nm, about 460 nm, about 455 nm, about 450 nm, or about 445 nm. In certain implementations, the LEDs used in long-blue-pumped cyan channels can have a peak wavelength between about 460 nm and 515 nm. In some implementations, the LEDs in the long-blue-pumped cyan channels can include one or more LUXEON Rebel Blue LEDs (LXML-PB01, LXML-PB02) of color bins 1, 2, 3, 4, or 5, which have peak wavelengths ranging from 460 nm to 485 nm, or LUXEON Rebel Cyan LEDs (LXML-PE01) of color bins 1, 2, 3, 4, or 5, which have peak wavelengths raving from 460 nm to 485 nm. In some implementations, the short-blue-pumped cyan channels can have LEDs having a peak wavelength between about 405 nm and about 485 nm, between about 430 nm and about 460 nm, between about 430 nm and about 455 nm, between about 430 nm and about 440 nm, between about 440 nm and about 450 nm, between about 440 nm and about 445 nm, or between about 445 nm and about 450 nm. The LEDs used in the short-blue-pumped cyan channels may have full-width half-maximum wavelength ranges of between about 10 nm and about 30 nm. In some preferred implementations, the short-blue-pumped cyan channels can include one or more LUXEON Z Color Line royal blue LEDs (product code LXZ1-PR01) of color bin codes 3, 4, 5, or 6, one or more LUXEON Z Color Line blue LEDs (LXZ1-PB01) of color bin code 1 or 2, or one or more LUXEON royal blue LEDs (product code LXML-PR01 and LXML-PR02) of color bins 3, 4, 5, or 6 (Lumileds Holding B.V., Amsterdam, Netherlands).
Yellow Channels
In some implementations of the present disclosure, lighting systems can include yellow channels that produce light with a yellow color point that falls within a yellow color range. Non-limiting
Violet Channels
In some implementations of the present disclosure, lighting systems can include violet channels that produce light with a violet color point that falls within a violet color range. Non-limiting
Red Channels
In some implementations, the red light channels can have spectral power distributions in the bioactive LRNE region. Tables 1-4 show the ratios of spectral power within wavelength ranges, with an arbitrary reference wavelength range selected for each color range and normalized to a value of 100.0. In certain implementations, the spectral power distribution of a LRNE light channel falls between minimum and maximum values in particular wavelength ranges relative to an arbitrary reference wavelength range. Lighting systems and bioactive panels include red channels that produce light with a red color point that falls within a red color range. In certain implementations, suitable red color ranges can include red color ranges 302A-D.
Long Red and Near Infrared Channel
In some aspects, the present disclosure relates to long red and near infrared lighting channels that can provide long red and near infrared energy (“LRNE”). Long red and near infrared channels can provide one or both of Visible LRNE and Non-Visible LRNE. Visible LRNE refers to light having spectral power in wavelengths between about 625 nm and about 700 nm. Non-Visible LRNE refers to light having spectral power in wavelengths greater than or equal to about 700 nm. The Long Red and Near Infrared Channels of the present disclosure can be part of one or more red channels involved in color-tuning and providing white light, or as separate channel that can be operated independently of color-tuning requirements. In some implementations an additional LRNE channel includes the non-visible region of the LRNE also referred to as near infrared. Although the near infrared may not be visually perceived as red such a channel it can provide benefits of LRNE as described above. In
In implementations utilizing LEDs that emit substantially saturated light at wavelengths between about 360 nm and about 535 nm, the panel systems can include suitable recipient luminophoric mediums for each LED in order to produce light having color points within the suitable blue color ranges 301A-F, red color ranges 302A-D, cyan color ranges 303A-E, violet color ranges 1301, 1302, and yellow color ranges 1401, 1402 described herein. The light emitted by each lighting channel (from each LED string, i.e., the light emitted from the LED(s) and associated recipient luminophoric medium together) can have a suitable spectral power distribution (“SPD”) having spectral power with ratios of power across the visible wavelength spectrum from about 380 nm to about 780 nm or across the visible, near-visible, and non-visible wavelength spectrum from about 320 nm to about 1000 nm. While not wishing to be bound by any particular theory, it is speculated that the use of such LEDs in combination with recipient luminophoric mediums to create unsaturated light within the suitable color ranges 301A-F, 302A-D, 303A-E, 1301, 1302, 1401, and 1402 provides for improved color rendering performance for white light across a predetermined range of CCTs from a single panel systems. Further, while not wishing to be bound by any particular theory, it is speculated that the use of such LEDs in combination with recipient luminophoric mediums to create unsaturated light within the suitable color ranges 301A-F, 302A-D, 303A-E, 1301, 1302, 1401, and 1402 provides for improved light rendering performance, providing higher EML performance along with color-rendering performance, for white light across a predetermined range of CCTs from a single panel systems. Some suitable ranges for spectral power distribution ratios of the lighting channels of the present disclosure are shown in Tables 1-4 and 7-15. The Tables show the ratios of spectral power within wavelength ranges, with an arbitrary reference wavelength range selected for each color range and normalized to a value of 100.0 except where indicated otherwise.
In some implementations, the lighting channels of the present disclosure can each product a colored light that falls between minimum and maximum values in particular wavelength ranges relative to an arbitrary reference wavelength range. Tables 1, 2, and 7-15 show some exemplary minimum and maximum spectral power values for the blue, red, long-red, LRNE, short-blue-pumped cyan, long-blue-pumped cyan, yellow, and violet channels of the disclosure. In certain implementations, the blue lighting channel can produce light with spectral power distribution that falls within the values between Blue minimum 1 and Blue maximum 1 in the wavelength ranges shown in Table 1, Table 2, or both Tables 1 and 2. In some implementations, the red lighting channel can produce light with spectral power distribution that falls within the values between Red minimum 1 and Red maximum 1 in the wavelength ranges shown in Table 1, Table 2, or both Tables 1 and 2. In some implementations, the red channel can produce red light having a spectral power distribution that falls within the ranges between the Exemplary Red Channels Minimum and the Exemplary Red Channels Maximum in the wavelength ranges shown in one or more of Tables 7-9. In some implementations, the short-blue-pumped cyan can fall within the values between Short-blue-pumped cyan minimum 1 and Short-blue-pumped cyan maximum 1 in the wavelength ranges shown in Table 1, Table 2, or both Tables 1 and 2. In other implementations, the short-blue-pumped cyan can fall within the values between Short-blue-pumped cyan minimum 1 and Short-blue-pumped cyan maximum 2 in the wavelength ranges shown in Table 1. In some implementations, the Long-Blue-Pumped Cyan lighting channel can produce light with spectral power distribution that falls within the values between Long-Blue-Pumped Cyan minimum 1 and Long-Blue-Pumped Cyan maximum 1 in the wavelength ranges shown in Table 1, Table 2, or both Tables 1 and 2. In some implementations, the yellow channel can produce yellow light having a spectral power distribution that falls within the ranges between the Exemplary Yellow Channels Minimum and the Exemplary Yellow Channels Maximum in the wavelength ranges shown in one or more of Tables 13-15. In some implementations, the violet channel can produce violet light having a spectral power distribution that falls within the ranges between the Exemplary Violet Channels Minimum and the Exemplary Violet Channels Maximum in the wavelength ranges shown in one or more of Tables 10-12. While not wishing to be bound by any particular theory, it is speculated that because the spectral power distributions for generated light with color points within the blue, long-blue-pumped cyan, short-blue-pumped cyan, yellow, and violet color ranges contains higher spectral intensity across visible wavelengths as compared to lighting apparatuses and methods that utilize more saturated colors, this allows for improved color rendering for test colors other than R1-R8. International Patent Application No. PCT/US2018/020792, filed Mar. 2, 2018, discloses aspects of some additional red, blue, short-pumped-blue (referred to as “green” therein), and long-pumped-blue (referred to as “cyan” therein) channel elements that may be suitable for some implementations of the present disclosure, the entirety of which is incorporated herein for all purposes.
In some implementations, the short-blue-pumped cyan channel can produce cyan light having certain spectral power distributions. Tables 3 and 4 show the ratios of spectral power within wavelength ranges, with an arbitrary reference wavelength range selected for the short-blue-pumped cyan color range and normalized to a value of 100.0, for a short-blue-pumped cyan channel that may be used in some implementations of the disclosure. The exemplary Short-blue-pumped cyan Channel 1 has a ccx, ccy color coordinate shown in Table 5. In certain implementations, the short-blue-pumped cyan channel can have a spectral power distribution with spectral power in one or more of the wavelength ranges other than the reference wavelength range increased or decreased within 30% greater or less, within 20% greater or less, within 10% greater or less, or within 5% greater or less than the values shown in Table 3 or 4.
In some implementations, the long-blue-pumped cyan channel can produce cyan light having certain spectral power distributions. Tables 3 and 4 shows ratios of spectral power within wavelength ranges, with an arbitrary reference wavelength range selected for the long-blue-pumped cyan color range and normalized to a value of 100.0, for several non-limiting embodiments of the long-blue-pumped cyan channel. The exemplary Long-blue-pumped cyan Channel 1 has a ccx, ccy color coordinate Shown in Table 5. In certain implementations, the long-blue-pumped cyan channel can have a spectral power distribution with spectral power in one or more of the wavelength ranges other than the reference wavelength range increased or decreased within 30% greater or less, within 20% greater or less, within 10% greater or less, or within 5% greater or less than the values shown in Table 3 and 4.
In some implementations, the red channel can produce red light having certain spectral power distributions. Tables 3-4 and 7-9 show the ratios of spectral power within wavelength ranges, with an arbitrary reference wavelength range selected for the red color range and normalized to a value of 100.0, for red lighting channels, long-red channels, and LRNE channels that may be used in some implementations of the disclosure. The exemplary Red Channel 1 has a ccx, ccy color coordinate of (0.5932, 0.3903). In certain implementations, the red channel can have a spectral power distribution with spectral power in one or more of the wavelength ranges other than the reference wavelength range increased or decreased within 30% greater or less, within 20% greater or less, within 10% greater or less, or within 5% greater or less than the values shown in Tables 3-4 and 7-9 for Red Channels 1-11, Long-Red Channels A-B, the Exemplary Long-Red Channel Average, and the Exemplary Red Channels Average.
In some implementations, the blue channel can produce blue light having certain spectral power distributions. Tables 3 and 4 show the ratios of spectral power within wavelength ranges, with an arbitrary reference wavelength range selected for the blue color range and normalized to a value of 100.0, for a blue channel that may be used in some implementations of the disclosure. Exemplary Blue Channel 1 has a ccx, ccy color coordinate of (0.2333, 0.2588). In certain implementations, the blue channel can have a spectral power distribution with spectral power in one or more of the wavelength ranges other than the reference wavelength range increased or decreased within 30% greater or less, within 20% greater or less, within 10% greater or less, or within 5% greater or less than the values shown in Tables 3 and 4.
In some implementations, the yellow channel can have certain spectral power distributions. Tables 13-15 show the ratios of spectral power within wavelength ranges, with an arbitrary reference wavelength range selected and normalized to a value of 100.0 for exemplary yellow lighting channels, Yellow Channels 1-6. Table 5 shows some aspects of the exemplary yellow lighting channels for some implementations of the disclosure. In certain implementations, the yellow channel can have a spectral power distribution with spectral power in one or more of the wavelength ranges other than the reference wavelength range increased or decreased within 30% greater or less, within 20% greater or less, within 10% greater or less, or within 5% greater or less than the values shown in one or more of Tables 13-15 for Yellow Channels 1-6 and the Exemplary Yellow Channels Average.
In some implementations, the violet channel can have certain spectral power distributions. Tables 13-15 show the ratios of spectral power within wavelength ranges, with an arbitrary reference wavelength range selected and normalized to a value of 100.0 for exemplary violet lighting channels, Violet Channels 1-5. Table 5 shows some aspects of the exemplary violet lighting channels for some implementations of the disclosure. In certain implementations, the violet channel can have a spectral power distribution with spectral power in one or more of the wavelength ranges other than the reference wavelength range increased or decreased within 30% greater or less, within 20% greater or less, within 10% greater or less, or within 5% greater or less than the values shown in one or more of Tables 12-15 for one or more of Violet Channels 1-6 and the Exemplary Violet Channels Average.
In some implementations, the lighting channels of the present disclosure can each product a colored light having spectral power distributions having particular characteristics. In certain implementations, the spectral power distributions of some lighting channels can have peaks, points of relatively higher intensity, and valleys, points of relatively lower intensity that fall within certain wavelength ranges and have certain relative ratios of intensity between them.
Tables 38 and 39 and
Tables 40 and 41 and
Tables 42 and 43 and
Blends of luminescent materials can be used in luminophoric mediums having the desired saturated color points when excited by their respective LED strings including luminescent materials such as those disclosed in co-pending application PCT/US2016/015318 filed Jan. 28, 2016, entitled “Compositions for LED Light Conversions”, the entirety of which is hereby incorporated by this reference as if fully set forth herein. Traditionally, a desired combined output light can be generated along a tie line between the LED string output light color point and the saturated color point of the associated recipient luminophoric medium by utilizing different ratios of total luminescent material to the encapsulant material in which it is incorporated. Increasing the amount of luminescent material in the optical path will shift the output light color point towards the saturated color point of the luminophoric medium. In some instances, the desired saturated color point of a recipient luminophoric medium can be achieved by blending two or more luminescent materials in a ratio. The appropriate ratio to achieve the desired saturated color point can be determined via methods known in the art. Generally speaking, any blend of luminescent materials can be treated as if it were a single luminescent material, thus the ratio of luminescent materials in the blend can be adjusted to continue to meet a target CIE value for LED strings having different peak emission wavelengths. Luminescent materials can be tuned for the desired excitation in response to the selected LEDs used in the LED strings, which may have different peak emission wavelengths within the range of from about 360 nm to about 535 nm. Suitable methods for tuning the response of luminescent materials are known in the art and may include altering the concentrations of dopants within a phosphor, for example. In some implementations of the present disclosure, luminophoric mediums can be provided with combinations of two types of luminescent materials. The first type of luminescent material emits light at a peak emission between about 515 nm and about 590 nm in response to the associated LED string emission. The second type of luminescent material emits at a peak emission between about 590 nm and about 700 nm in response to the associated LED string emission. In some instances, the luminophoric mediums disclosed herein can be formed from a combination of at least one luminescent material of the first and second types described in this paragraph. In implementations, the luminescent materials of the first type can emit light at a peak emission at about 515 nm, 525 nm, 530 nm, 535 nm, 540 nm, 545 nm, 550 nm, 555 nm, 560 nm, 565 nm, 570 nm, 575 nm, 580 nm, 585 nm, or 590 nm in response to the associated LED string emission. In preferred implementations, the luminescent materials of the first type can emit light at a peak emission between about 520 nm to about 555 nm. In implementations, the luminescent materials of the second type can emit light at a peak emission at about 590 nm, about 595 nm, 600 nm, 605 nm, 610 nm, 615 nm, 620 nm, 625 nm, 630 nm, 635 nm, 640 nm, 645 nm, 650 nm, 655 nm, 670 nm, 675 nm, 680 nm, 685 nm, 690 nm, 695 nm, or 700 nm in response to the associated LED string emission. In preferred implementations, the luminescent materials of the first type can emit light at a peak emission between about 600 nm to about 670 nm. Some exemplary luminescent materials of the first and second type are disclosed elsewhere herein and referred to as Compositions A-F. Table 6 shows aspects of some exemplar luminescent materials and properties.
Blends of Compositions A-F can be used in luminophoric mediums having desired saturated color points when excited by respective LED strings in the lighting channels of the disclosure. In some implementations, one or more blends of one or more of Compositions A-F can be used to produce luminophoric mediums. In some preferred implementations, one or more of Compositions A, B, and D and one or more of Compositions C, E, and F can be combined to produce luminophoric mediums. In some preferred implementations, the encapsulant for luminophoric mediums comprises a matrix material having density of about 1.1 mg/mm3 and refractive index of about 1.545 or from about 1.4 to about 1.6. In some implementations, Composition A can have a refractive index of about 1.82 and a particle size from about 18 micrometers to about 40 micrometers. In some implementations, Composition B can have a refractive index of about 1.84 and a particle size from about 13 micrometers to about 30 micrometers. In some implementations, Composition C can have a refractive index of about 1.8 and a particle size from about 10 micrometers to about 15 micrometers. In some implementations, Composition D can have a refractive index of about 1.8 and a particle size from about 10 micrometers to about 15 micrometers. Suitable phosphor materials for Compositions A, B, C, and D are commercially available from phosphor manufacturers such as Mitsubishi Chemical Holdings Corporation (Tokyo, Japan), Intematix Corporation (Fremont, Calif.), EMD Performance Materials of Merck KGaA (Darmstadt, Germany), and PhosphorTech Corporation (Kennesaw, Ga.).
In some aspects, the circadian-inducing blue light in the bioactive panel systems can have circadian-stimulating energy (CSE) characteristics that lead to biological effects in users. The circadian-inducing blue, and overall light emissions including the circadian-inducing blue, can have a first circadian-stimulating energy characteristic related to the associated first spectral power distribution of the circadian-inducing blue or overall light emissions, while light emissions from the non-circadian-inducing blue and related overall light emissions can have a second circadian-stimulating energy characteristic related to the associated second spectral power distribution of the circadian-inducing blue or overall light emissions.
In certain implementations, the first circadian-stimulating energy characteristic and the second circadian-stimulating energy characteristic can be the percentage of the spectral power in the associated first spectral power distribution and the second spectral power distribution, respectively, between a first wavelength value and a second wavelength value, forming a particular wavelength range therein greater than the first wavelength value and less than or equal to the second wavelength value. In some instances, the first and second circadian-stimulating energy characteristics can be one or more of the percentage of spectral power in the wavelength ranges of 470 nm<λ≤480 nm, 480 nm<λ≤490 nm, and 490 nm<λ≤500 nm in comparison to the total energy from 320 nm<λ≤800 nm in the first and second spectral power distributions respectively. In some implementations, the percentage of spectral power in the wavelength ranges of 470 nm<λ≤480 nm in comparison to the total energy from 320 nm<λ≤800 nm of the first spectral power distribution can be between about 2.50 and about 6.00, between about 3.00 and about 5.50, between about 3.00 and about 4.00, between about 3.50 and about 4.00, about 3.0, about 3.1, about 3.2, about 3.3, about 3.4, about 3.5, about 3.6, about 3.7, about 3.8, about 3.9, about 4.0, about 4.1, about 4.2, about 4.3, about 4.4, about 4.5, about 4.6, about 4.7, about 4.8, about 4.9, about 5.0, about 5.1, about 5.2, about 5.3, about 5.4, about 5.5, about 5.6, about 5.7, about 5.8, about 5.9, or about 6.0. In certain implementations, the percentage of spectral power in the wavelength ranges of 480 nm<λ≤490 nm in comparison to the total energy from 320 nm<λ≤800 nm in the first spectral power distribution can be between about 4.0 and about 6.5, between about 4.5 and about 5.5, between about 4.4 and about 4.6, between about 5.2 and about 5.8, about 4.0, about 4.1, about 4.2, about 4.3, about 4.4, about 4.5, about 4.6, about 4.7, about 4.8, about 4.9, about 5.0, about 5.1, about 5.2, about 5.3, about 5.4, about 5.5, about 5.6, about 5.7, about 5.8, about 5.9, about 6.0, about 6.1, about 6.2, about 6.3, about 6.4, or about 6.5. In some implementations, the percentage of spectral power in the wavelength ranges of 490 nm<λ≤500 nm in comparison to the total energy from 320 nm<λ≤800 nm in the first spectral power distribution can be between about 3.5 and about 6.0, between about 4.0 and about 5.0, between about 4.5 and about 5.5, between about 4.5 and about 5.0, about 3.5, about 3.6, about 3.7, about 3.8, about 3.9, about 4.0, about 4.1, about 4.2, about 4.3, about 4.4, about 4.5, about 4.6, about 4.7, about 4.8, about 4.9, about 5.0, about 5.1, about 5.2, about 5.3, about 5.4, about 5.5, about 5.6, about 5.7, about 5.8, about 5.9, or about 6.0. In some implementations, the percentage of spectral power in the wavelength ranges of 470 nm<λ≤480 nm in comparison to the total energy from 320 nm<λ≤800 nm in the second spectral power distribution can be between about 0.025 and about 0.080, between about 0.030 and about 0.060, between about 0.050 and about 0.070, between about 0.050 and about 0.060, about 0.025, about 0.030, about 0.035, about 0.040, about 0.045, about 0.050, about 0.055, about 0.56, about 0.57, about 0.58, about 0.59, about 0.060, about 0.61, about 0.62, about 0.63, about 0.64, about 0.065, about 0.66, about 0.67, about 0.68, about 0.69, about 0.070, about 0.075, or about 0.080. In certain implementations, the percentage of spectral power in the wavelength ranges of 480 nm<λ≤490 nm in comparison to the total energy from 320 nm<λ≤800 nm in the second spectral power distribution can be between about 0.10 and about 0.30, between about 0.10 and about 0.15, between about 0.20 and about 0.25, between about 0.13 and about 0.24, about 0.10, about 0.11, about 0.12, about 0.13, about 0.14, about 0.15, about 0.016, about 0.17, about 0.18, about 0.19, about 0.20, about 0.21, about 0.22, about 0.23, about 0.24, about 0.25, about 0.26, about 0.27, about 0.28, about 0.29, or about 0.30. In some implementations, the percentage of spectral power in the wavelength ranges of 490 nm<λ≤500 nm in comparison to the total energy from 320 nm<λ≤800 nm in the second spectral power distribution can be between about 0.25 and about 0.75, between about 0.25 and about 0.40, between about 0.55 and about 0.70, between about 0.30 and about 0.35, about 0.25, about 0.26, about 0.27, about 0.28, about 0.29, about 0.30, about 0.31, about 0.32, about 0.33, about 0.34, about 0.35, about 0.36, about 0.37, about 0.38, about 0.39, about 0.40, about 0.41, about 0.42, about 0.43, about 0.44, about 0.45, about 0.46, about 0.47, about 0.48, about 0.49, about 0.50, about 0.51, about 0.52, about 0.53, about 0.54, about 0.55, about 0.56, about 0.57, about 0.58, about 0.59, about 0.60, about 0.61, about 0.62, about 0.63, about 0.64, about 0.65, about 0.66, about 0.67, about 0.68, about 0.69, about 0.70, about 0.71, about 0.72, about 0.73, about 0.74, or about 0.75.
In further aspects of the present disclosure, the first and second circadian-stimulating energy characteristics can relate to spectral energy within particular wavelength ranges. In some implementations, spectral energy concentrations within particular wavelength ranges can lead to biological effects by providing photostimulation to intrinsically photosensitive retinal ganglion cells (ipRGCs), which express melanopsin, a photopigment that can respond to light directly, and can be associated with non-image-forming functions such as circadian photoentrainment and pupil-size control in addition to some image-forming functions. ipRGCs are sensitive to light at wavelengths between about 400 nm and about 600 nm, with a peak sensitivity and response to light with wavelengths around 480 nm to 490 nm. In certain implementations, the first circadian-stimulating energy characteristic and the second circadian-stimulating energy characteristic can be the percentage of the spectral power in the first spectral power distribution and the second spectral power distribution, respectively, between a first wavelength value and a second wavelength value, forming a particular wavelength range therein greater than the first wavelength value and less than or equal to the second wavelength value. In some implementations, the first wavelength value can be about 400 nm, about 410 nm, about 420 nm, about 430 nm, about 440 nm, about 450 nm, about 460 nm, about 470 nm, about 480 nm, about 490 nm, about 500 nm, about 510 nm, about 520 nm, about 530 nm, about 540 nm, about 550, about 560 nm, about 570 nm, about 580 nm, about 590 nm, or about 600 nm. In some implementations, the second wavelength value can be about 410 nm, about 420 nm, about 430 nm, about 440 nm, about 450 nm, about 460 nm, about 470 nm, about 480 nm, about 490 nm, about 500 nm, about 510 nm, about 520 nm, about 530 nm, about 540 nm, about 550, about 560 nm, about 570 nm, about 580 nm, about 590 nm, about 600 nm, or about 610 nm. In certain implementations, the first wavelength value can be 440 nm and the second wavelength value can be 490 nm, with the particular wavelength range being 440<λ≤490 nm, as shown for values for the exemplary first and second lighting channels shown in Table 3, which shows the percent spectral energy in the range 440<λ≤490 nm in comparison to the total spectral energy in the range 380<λ≤780 nm. In further implementations, other first and second wavelength values can be selected for the first circadian-stimulating energy characteristic and the second circadian-stimulating energy characteristic of the percentages of the spectral power in the first spectral power distribution and the second spectral power distribution between the first and second wavelength values, including but not limited to wavelength ranges (in nm) from about 400 to about 410, about 410 to about 420, about 420 to about 430, about 430 to about 440, about 440 to about 450, about 450 to about 460, about 460 to about 470, about 470 to about 480, about 480 to about 490, about 490 to about 500, about 500 to about 510, about 510 to about 520, about 520 to about 530, about 530 to about 540, about 540 to about 550, or about 550 to about 560.
In certain implementations, one or more of the circadian-stimulating energy characteristics of the lighting systems can be EML values of the first, second, and third white light. In some aspects of the present disclosure, the lighting systems can provide a ratio of a first EML value of the first spectral power distribution to a second EML value of the second spectral power distribution. In some implementations, the ratio of the first EML value to the second EML value can be between about 2.0 and about 5.5, between about 3.0 and about 5.0, between about 2.8 and about 3.8, between about 2.6 and about 3.3, between about 4.0 and about 5.5, between about 4.5 and about 5.5, between about 5.5 and about 6.5, between about 6.5 and about 7.5, between about 7.5 and about 8.5, between about 8.5 and about 9.5, between about 2.0 and about 10.0, between about 3.0 and about 10.0, between about 4.0 and about 10.0, between about 5.0 and about 10.0, between about 6.0 and about 10.0, between about 7.0 and about 10.0, between about 8.0 and about 10.0, or between about 9.0 and about 10.0. In further implementations, the ratio of the first EML value to the second EML value can be about 2.0, about 2.1, about 2.2, about 2.3, about 2.4, about 2.5, about 2.6, about 2.7, about 2.8, about 2.9, about 3.0, about 3.1, about 3.2, about 3.3, about 3.4, about 3.5, about 3.6, about 3.7, about 3.8, about 3.9, about 4.0, about 4.1, about 4.2, about 4.3, about 4.4, about 4.5, about 4.6, about 4.7, about 4.8, about 4.9, about 5.0, about 5.1, about 5.2, about 5.3, about 5.4, about 5.5, about 5.6, about 5.7, about 5.8, about 5.9, about 6, about 6.1, about 6.2, about 6.3, about 6.4, about 6.5, about 6.6, about 6.7, about 6.8, about 6.9, about 7, about 7.1, about 7.2, about 7.3, about 7.4, about 7.5, about 7.6, about 7.7, about 7.8, about 7.9, about 8, about 8.1, about 8.2, about 8.3, about 8.4, about 8.5, about 8.6, about 8.7, about 8.8, about 8.9, about 9, about 9.1, about 9.2, about 9.3, about 9.4, about 9.5, about 9.6, about 9.7, about 9.8, about 9.9, or about 10.0.
In certain implementations, the first spectral power distribution has a first circadian-stimulating energy characteristic, and the second spectral power distribution has a second circadian-stimulating energy characteristic. In some implementations, the first circadian-stimulating energy characteristic can be a first percentage, the first percentage comprising the percentage of the spectral power between 380 nm and 780 nm in the first spectral power distribution between 440 nm and 490 nm. In certain implementations, the second circadian-stimulating energy characteristic can be a second percentage, the second percentage comprising the percentage of the spectral power between 380 nm and 780 nm in the second spectral power distribution between 440 nm and 490 nm. In certain implementations of the lighting systems of the present disclosure, the first percentage can be between about 15% and about 25%, between about 16% and about 22%, about 16%, about 17%, about 18%, about 19%, about 20%, about 21%, about 22%, about 23%, about 24%, or about 25%. In further implementations of the lighting systems of the present disclosure, the second percentage can be between about 0.9% and about 1.05%, between about 0.85% and about 0.95%, between about 0.85% and about 0.90%, between about 0.90% and about 0.95%, about 0.90%, about 0.91%, about 0.92%, about 0.93%, about 0.94%, about 0.95%, about 0.96%, about 0.97%, about 0.98%, about 0.99%, about 1.00%, about 1.01%, about 1.02%, about 1.03%, about 1.04%, or about 1.05%. In some implementations, the lighting systems can have a ratio of the first percentage to the second percentage of between about 13 and about 30, between about 15 and about 25, between about 20 and about 25, between about 20 and about 30, between about 18 and about 22, about 13, about 14, about 15, about 16, about 17, about 18, about 19, about 20, about 21, about 22, about 23, about 24, about 25, about 26, about 27, about 28, about 29, or about 30.
In some aspects of some implementations, Red light in the bioactive panel systems can have LRNE characteristics that lead to biological effects in users. LRNE may include visible red spectrum “Long Red” LRNE light emissions with a first LRNE energy characteristic related to the associated first LRNE spectral power distribution and “Near Infrared” LRNE i.e. Non-visible spectrum light emissions from a second LRNE red channel which will have a second LRNE spectral power distribution.
As illustrated in
An integrated control system can connect one or more external systems, input, and information to provide bioactive lighting, as discussed herein, through a plurality of devices, systems, and modalities. In various examples, the control system may communicate over one or more computing systems using one or more servers and networks 3305 in communication with one another (e.g., network, Bluetooth, wired, wireless communication, etc.).
In embodiments, lighting systems associated with each device may be managed by a master device 3340, which can communicate various lighting levels, timing, and configuration, for example, to achieve the desired bioactive lighting. Such levels may vary based on one or more of time of day, intended effect of the lighting, individual preferences, capabilities of the device, feedback mechanisms, sensor input, and more.
As illustrated in
In an example, lighting systems that may be used in a bioactive computer display system and/or bioactive panel system 3310 in accordance with the principles of the present inventions may be controlled over time to supplement, treat or otherwise effect biological system and cycles of an exposed user throughout the day in different ways. The lighting systems may be automatically, semi-automatically or manually adjusted. The lighting systems may be adjusted based on sensor data, activity data, social media data, etc.
In embodiments, as the panel 3310 systems are installed in the environment of a lighting installation, networking features automatically engage upon powering up one or more the panel systems, and the panel systems may automatically commission themselves, such as by connecting to an overall control platform and/or to other panel systems. Thus, the panel systems in an installation may self-commission and self-configure to create a network connection between the panel systems in the environment and a remote operator (such as in the cloud). The panel systems may configure in a master/slave, ring, mesh, or peer-to-peer network, by which autonomous control features may be engaged in the environment. In embodiments, remote control features may be engaged using the network connection to the platform or other remote operators.
In embodiments, networked communication can be used among components in the control system 3000 in a deployed lighting installation that includes panel systems. Once installed and commissioned, control of the lighting installation may be handed over to an operator of a platform, such as a building owner, occupant, landlord, tenant, or the like. In embodiments, handoff may include using identity and authentication features, such as using keys, passwords, or the like that allow operation of the lighting installation by permitted users. In embodiments, a remote-control interface of the platform may be used by an operator for remote operation of the lighting installation. The remote-control interface may use a lighting project data structure as a source of knowledge about the properties, configurations, control capabilities, and other elements of a lighting installation, so that the same platform used for the design of the lighting installation may be used to control the lighting installation. The remote-control interface may include operational guidance features, such as guiding users through the operation of a lighting installation.
In embodiments, an autonomous control system may be provided for a lighting installation that includes panel systems of the present disclosure, by which the lighting installation may control various features of the lighting system, such as based on information collected locally in the environment, such as from one or more sensors 3330. For example, the autonomous control system may automatically adjust control parameters for a light source, including but not limited to panel systems, to achieve improved adherence to the overall specifications for a lighting installation, may adjust timing variables based on detected usage patterns in a space, may adjust lighting properties based on changes in a space (such as changes in colors paints, carpet and fabrics), and the like.
Under operation, the lighting installation may include an operational feedback system, configured to collect information about the lighting installation, which may include interfaces for soliciting and receiving user feedback (such as regarding satisfaction with the installation or indicating desired changes) and which may include a sensor system 3330, e.g., a lighting installation sensor system, such as including light sensors, motion sensors, temperature sensors, and others to collect information about the actual lighting conditions in the environment, activities of occupants within the environment, and the like. Information collected by the lighting installation sensor system may be relayed to a validation system of the lighting platform, such as for validation that an installation is operating as designed, including by comparison of light properties at various locations in the environment with the specifications and requirements provided in the lighting design environment, such as reflected in the lighting project data structure. In embodiments, the variances from the specifications and requirements may be provided to the autonomous control system and/or the remote-control system, so that adjustments may be made, either autonomously or by a local or remote operator of the lighting installation, to enable adjustments (such as to colors, intensities, color temperatures, beam directions, and other factors), such as to cause the lighting installation to better meet the specifications and requirements. The operational feedback system may also capture feedback that leads to revisiting the lighting design in the lighting design environment, which may induce further iteration, resulting in changes to control parameters for the panel systems, as well as automated ordering of additional or substitute panel systems, with updated installation and operational guidance.
In embodiments, remote control may enable field programmable lighting systems, such as for transitional environments like museums (where art objects change regularly), stores (where merchandise shifts) and the like as well as for customizable environments (such as personalizing lighting in a hotel room according to a specification for a guest (which may include having the guest select an aesthetic filter) or personalized lighting for a workstation for an employee in an office setting. Such features may enable the lighting installation to change configurations (such as among different aesthetic filters) for multi-use environments, multi-tenant environments, and the like where lighting conditions may need to change substantially over time.
In embodiments, a lighting system may include navigation features, such as being associated with beacons, where the lighting system interacts with one or more devices to track users within a space. The panel systems and their locations may be associated with a map, such as the map of the lighting space in the design environment. The map may be provided from the lighting design environment to one or more other location or navigation systems, such that locations of panel systems may be used as known locations or points of interest within a space.
In some embodiments, the lighting installation may be designed for an operation that is coordinated with one or more external systems, e.g., lighting, panel, and computer systems, which may serve as inputs to the lighting installation, such as music, video and other entertainment content (such as to coordinate lighting with sound). Inputs may include voice control inputs, which may include systems for assessing tone or mood from vocal patterns, such as to adjust lighting based on the same.
With respect to
In some embodiments, inputs may also include inputs from sensors associated with wearable devices 3330, such as enabling adjustment of lighting control parameters (autonomously or with remote or local control features) based on physiological factors, such as ones indicating health conditions, emotional states, moods, or the like. Inputs from wearable devices may be used in the operational feedback system, such as to measure reactions to lighting conditions (such as to enable automated adjustment of a lighting installation), as well as to measure impacts on mood, health conditions, energy, wellness factors, and the like.
In some embodiments, the platform may be configured to change settings or parameters for a lighting installation (including but not limited to panel systems of the present disclosure, such as by using a custom tuning system) based on a variety of real time data, with a view to having the lighting installation, including panel systems included therein, best suit its environment in a dynamic way. In embodiments, data may be obtained that serves as an indicator of the emotional state or the stress level of an environment, and the lighting installation may respond accordingly to that state or stress level. In embodiments, data about the environment may be collected by a wearable device 3333, such as a smartwatch, armband, or the like; for example, data may be collected on acceleration, location, ambient light characteristics, and heart rate, among other possibilities. In embodiments, the data may be provided to the platform for analysis, including using machine learning, such as to observe physiological indicators of stress, mood, or the like under given lighting conditions. The analysis may enable model-based controls (such as where a given mood or state of the users in a room are linked to a set of control parameters appropriate for that state). In embodiments, machine learning may be used; for example, over time, by variation of parameters for lighting objects and fixtures (such as color, color temperature, illumination patterns, lighting distributions, and many others), a machine learning system may, using feedback on outcomes based at least in part on physiological data and other data collected by a wearable device, select and/or promotion lighting installation parameters that improve various measures of stress, mood, satisfaction, or the like. This may occur in real time under control of a machine learning system based on the current conditions of users or the environment. In embodiments, data collected at least in part by a physiological monitor or wearable device may be used as an input to processing logic on a lighting object that changes lighting levels or other parameters to accommodate the ‘emotional state’ of the users in an environment where the lighting object is located. In embodiments, there is memory that retains and manages function with no appreciable drain on the battery.
In some embodiments, inputs may include systems that take data harvested from sensors 3335 in the lighting installation environment as well as sensors that reflect information about users, such as one or more of physiological sensors (including wearable devices, such as armbands, wrist bands, chest bands, glasses, clothing, and the like), sensors on various devices used by a user, ambient sensors, and the like. These may include sensing one or more of temperature, pressure, ambient lighting conditions, localized lighting conditions, lighting spectrum characteristics, humidity, UV light, sound, particles, pollutants, gases (e.g., oxygen, carbon dioxide, carbon monoxide and radon), radiation, location of objects or items, motion (e.g., speed, direction and/or acceleration). Where one or more wearable or physiological sensors are used, they may sense one or more of a person's temperature, blood pressure, heart rate, oxygen saturation, activity type, activity level, galvanic skin response, respiratory rate, cholesterol level (including HDL, LDL and triglyceride), hormone or adrenal levels (e.g., Cortisol, thyroid, adrenaline, melatonin, and others), histamine levels, immune system characteristics, blood alcohol levels, drug content, macro and micro nutrients, mood, emotional state, alertness, sleepiness, and the like.
In some embodiments, the platform may connect to or integrate with data sources of information about users, such as including social networks (Facebook™, LinkedIn™, Twitter™, and the like, sources of medical records (23&Me™ and the like), productivity, collaboration and/or calendaring software (Google™, Outlook™, scheduling apps and the like), information about web browsing and/or shopping activity, activity on media streaming services (Netflix™ Spotify™, YouTube™, Pandora™ and the like), health record information and other sources of insight about the preferences or characteristics of users of the space of a lighting installation, including psychographic, demographic and other characteristics.
In some embodiments, the platform may use information from sources that indicate patterns, such as patterns involving periods of time (daily patterns, weekly patterns, seasonal patterns, and the like), patterns involving cultural factors or norms (such as indicating usage patterns or preferences in different regions), patterns relating to personality and preferences, patterns relating to social groups (such as family and work group patterns), and the like. In embodiments, the platform may make use of the data harvested from various sources noted above to make recommendations and/or to optimize (such as automatically, under computer control) the design, ordering, fulfillment, deployment and/or operation of a lighting installation, such as based on understanding or prediction of user behavior. This may include recommendation or optimization relating to achieving optimal sleep time and duration, setting optimal mealtimes, satisfying natural light exposure requirements during the day, and maintaining tolerable artificial light exposure levels (such as during night time). In some embodiments, the platform may anticipate user needs and optimize the lighting installation to enhance productivity, alertness, emotional well-being, satisfaction, safety and/or sleep. In further embodiments, the platform may control one or more panel systems of the present disclosure in accordance with the user needs of the environment based on this information.
In some embodiments, the platform may store a space utilization data structure that indicates, over time, how people use the space of the lighting installation, such as indicating what hallways are more trafficked, and the like. This may inform understanding of a space, such as indicating what is an entry, what is a passage, what is a workspace, and the like, which may be used to suggest changes or updates to a lighting design. In embodiments, sensors may be used to collect and read where people have been in the space, such as using one or more video cameras, IR sensors, microwave sensors. LIDAR, ultrasound or the like. In embodiments, the platform may collect and read what adjustments people have made, such as task lamp activation and other activities that indicate how a lighting fixture is used by an individual in a space. By way of these examples, aggregate usage information may be used to optimize a lighting design and adjust other lighting designs. Based on these factors, a space may be dynamically adjusted, and the lighting model for an installation may be updated to reflect the actual installation.
In some embodiments, control capabilities of the panel systems may include dynamic configuration of control parameters, such as providing a dimming curve for a light source, including but not limited to a panel system of the present disclosure, that is customized to the preferences of a designer or other user. This may include a selection from one or more modes, such as ones described elsewhere herein that have desired effects on mood or aesthetic factors, that have desired health effects, that meet the functional requirements, or the like.
Bioactive thresholds may, in some instances, benefit from prolonged exposure to at least one of one of CSE and LRNE. In some instances a melanopic flux of at least 10:1 may be suitable, in other instances the melanopic flux may be 20:1, 50:1, 100:1, or a greater ratio. It will be appreciated in light of the disclosure that traditional systems simply adjust from a warm CCT to a cool CCT, which may only provide a 2:1 or 3:1 ratio of melanopic flux, which are below said threshold. In some implementations, the platform may include spectral tuning targets for panel systems of the present disclosure that may optimize this ratio based on local installation environments. These targets, in a first operational mode along with adjustments intensity of light (e.g., 4:1) may provide a higher ratio, such as a 10:1 ratio or greater, and thus provide greater melanopic flux ratios.
In a second operational mode and either in combination with the above mode or not, the platform may support an ability to shift the bias of light in a room. In embodiments, controlled variation of one or more panel systems of the present disclosure in a lighting environment can contribute to generating a lighting bias typical of being outside.
In some implementations, various other programmable modes may be provided, such as bioactive panel system settings where using different combinations of color light sources to achieve a given mixed color output may be optimized for efficacy, efficiency, color quality, health impact (e.g., circadian action and/or LRNE action), or to satisfy other requirements. In embodiments, the programmable modes may also include programmable dimming curves, color tuning curves, and the like (such as allowing various control interfaces, such as extra-low voltage (ELV) controllers or voltage-based dimmers to affect fixture colors, such as where a custom tuning curve provides a start point, an end point and a dimming and/or color tuning path in response to a level of dimming). In embodiments, programmable modes may use conventional tuning mechanisms, such as simple interpolation systems (which typically use two or three white color LEDs) are dimmable on a zero to ten-volt analog system, and have a second voltage-based input for adjusting the CCT of a fixture between warm and cool CCTs. The bioactive panel systems as described herein can provide for tunable ranges of color points at various x, y coordinates on the 1931 CIE chromaticity diagram. Because of the wide range of potential white or non-white colors produced by the panel systems, they may be controlled by the platform that may specify a particular x, y coordinate on the CIE diagram. Lighting control protocols like DMX™ and Dali 2.0™ may achieve this result.
In some implementations the control system described herein controls output of at least one CSE and LRNE. In some embodiments a programmable color curve for an LED driver may be input, such as through an interface of the platform, or through a desktop software interface, a mobile phone 3330, a tablet app, or the like, that enables a user to define a start and stop point to a color tuning curve and to specify how it will be controlled by a secondary input, such as a voltage-based input (e.g., a 0 to 10-volt input) to the fixture. These may include pre-defined curves, as well as the ability to set start, end, and waypoints to define custom curves. For example, an exemplary color curve can have a starting point around 8000K biased above the black body curve, with the color curve crossing the black body around 2700K, and finishing around 1800K below the black body curve. Similarly, another exemplary curve could be programmed such that the start was 4000K well above the black body, with the end being 4000K well below the black body. By way of these examples, any adjustment would be in hue only, not CCT. Further examples may include a curve that never produces a white color, such as starting in the purple and finishing in orange. In any of these cases, these curves may be programmed into panel systems via the interface of the platform, the desktop, mobile phone or tablet. In embodiments, the curves may be designed, saved, and then activated, such as using the secondary (supplemental) 0 to 10-volt input.
In some implementations, a three-channel warm dim operational mode may be used, such as that described more fully in U.S. Provisional Patent Application No. 62/712,182 filed Jul. 30, 2018, which is incorporated herein in its entirety for all purposes, for target applications where the “fully on” CCT falls between 3000K and 2500K. By way of these examples, as the fixture dims (via ELV control or in response to the 0 to 10-volt input) the CCT may be gradually decreased to between 2500K and 1800K. In certain embodiments, the hue adjustment may all occur below the black body curve. Alternative embodiments may use a cyan channel as described elsewhere herein, either long-blue-pumped cyan or short-blue-pumped cyan, and a red channel which may provide LRNE spectral power as described elsewhere herein, plus a 4000K white channel as described elsewhere herein to achieve a warm dimming operational mode that allows for adjustment both above and below the black body curve. In some embodiments of the three-channel warm dim mode, the white channel can have a color point within a 7-step MacAdam ellipse around any point on the black body locus having a correlated color temperature between about 3500K and about 6500K.
In some implementations, the panel systems of the present disclosure can include a 4-channel color system as described elsewhere herein and in U.S. Provisional Patent Application No. 62/757,672 filed Nov. 8, 2018, and U.S. Provisional Application No. 62/712,191 filed Jul. 30, 2018, the contents of which are incorporated by reference herein in their entirety as if fully set forth herein, includes 3000K to 1800K CCT white color points within its range, a programmable mode may be included within the driver that adjusts color with the dimming percentage as well. In some aspects, this may be similar to a conventional control mode, except that the color control would not be on the secondary 0 to 10-volt channel, but may be activated through the primary 0 to 10-volt input channel or ELV controller. In embodiments, the “starting” color point may be the one when the fixture was “fully on.” In embodiments, the “ending” color point may be the one where the fixture is maximally dimmed. It is thus possible to make full range color change, such as purple to orange, which is slaved to the 0 to 10-volt or ELV dimming signal.
In some implementations, an optimized mode may be provided. With a 4-channel color system, there are many ways to create a single x-y point on the CIE diagram. In embodiments, the maximally efficient mode may typically be one that uses the colors that have x, y coordinates closest to the target x, y coordinate. But for best color quality, utilizing a fourth channel (and thereby requiring more light from the color in the opposite “corner”) may help provide a desired spectral power distribution. For the maximum melatonin suppression (for systems hoping to mimic circadian lighting), a higher cyan channel content may be required for CCTs of 3500K and above and minimizing cyan and blue content below 3500K. It will be appreciated in light of the disclosure that conventional systems either require expert users to understand the color balances necessary to achieve these effects (who then implement the color balances channel-by-channel) or are designed for maximum efficiency with color quality as a byproduct.
In some implementations, a digital power system is provided herein (including firmware-driven power conversion and LED current control) that controls a multichannel color system, such as a 4-channel color system, and allows for the inclusion of “modes” which may calculate the correct color balance between the various channels to provide optimized outputs. In embodiments, optimization may occur around one or more of efficacy, color quality, circadian effects, LRNE effects, and other factors. Other modes are possible, such as optimizing for contrast, particular display requirements. It will be appreciated in light of the disclosure that this is not an exhaustive list but is representative of potential modes that could be engaged through an interface of the platform (or of a mobile, tablet or desktop application) where a color tuning curve may be specified, such that the curve is used to specify an interface between a controller and the Digital PSU in a panel system. In embodiments, these modes may account for actual measured colors for each panel system and calculate the correct balance of for the chosen modes, such as based on algorithms loaded into the Digital PSU microprocessor.
In some implementations, machine learning may be used, such as based on various feedback measures, such as relating to mood (stated by the user or measured by one or more sensors), noise levels (such as indicating successful utilization of a space based on a desired level of noise), returns on investment (such as where panel systems are intended to promote retail merchandise), reported pain levels, measured health levels, performance levels of users (including fitness, wellness, and educational performance, among others), sleep levels, vitamin D levels, melatonin levels, and many others. In embodiments, the lighting installations including the panel systems may be operated or controlled based on external information, such as based on seasonal lighting conditions, weather, climate, collective mood indicators (such as based on stock market data, news feeds, or sentiment indices), analyses of social network data, and the like. This may include controlling a system to reflect, or influence, the mood of occupants.
Computing environment 3000 typically includes a variety of computer-readable media. Computer-readable media can be any available media that is accessible by computing environment 3000 and includes both volatile and nonvolatile media, removable and non-removable media. Computer-readable media may comprise both computer storage media and communication media. Computer storage media does not comprise, and in fact explicitly excludes, signals per se.
Computer storage media includes volatile and nonvolatile, removable and non-removable, tangible and non-transient media, implemented in any method or technology for storage of information such as computer-readable instructions, data structures, program modules or other data. Computer storage media includes RAM; ROM; EE-PROM; flash memory or other memory technology; CD-ROMs; DVDs or other optical disk storage; magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices; or other mediums or computer storage devices which can be used to store the desired information and which can be accessed by computing environment 3000.
Communication media typically embodies computer-readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media. The term “modulated data signal” means a signal that has one or more of its characteristics set or changed in such a manner as to encode information in the signal. By way of example, communication media includes wired media, such as a wired network or direct-wired connection, and wireless media, such as acoustic, RF, infrared and other wireless media. Combinations of any of the above should also be included within the scope of computer-readable media.
Memory 3020 includes computer-storage media in the form of volatile and/or nonvolatile memory. The memory may be removable, non-removable, or a combination thereof. Memory 3020 may be implemented using hardware devices such as solid-state memory, hard drives, optical-disc drives, and the like. Computing environment 3000 also includes one or more processors 3030 that read data from various entities such as memory 3020, I/O interface 3040, and network interface 3050.
I/O interface 3040 enables computing environment 3000 to communicate with different input devices and output devices. Examples of input devices include a keyboard, a pointing device, a touchpad, a touchscreen, a scanner, a microphone, a joystick, and the like. Examples of output devices include a display device, an audio device (e.g., speakers), a printer, and the like. These and other I/O devices are often connected to processor 3010 through a serial port interface that is coupled to the system bus, but may be connected by other interfaces, such as a parallel port, game port, or universal serial bus (USB). A display device can also be connected to the system bus via an interface, such as a video adapter which can be part of, or connected to, a graphics processor unit. I/O interface 3040 is configured to coordinate I/O traffic between memory 3020, the one or more processors 3030, network interface 3050, and any combination of input devices and/or output devices.
Network interface 3050 enables computing environment 3000 to exchange data with other computing devices via any suitable network. In a networked environment, program modules depicted relative to computing environment 3000, or portions thereof, may be stored in a remote memory storage device accessible via network interface 3050. It will be appreciated that the network connections shown are exemplary and other means of establishing a communications link between the computers may be used.
In at least some embodiments, a server that implements a portion or all of one or more of the technologies described herein may include a general-purpose computer system that includes or is configured to access one or more computer-accessible media.
In various embodiments, computing device 3100 may be a uniprocessor system including one processor 3110 or a multiprocessor system including several processors 3110 (e.g., two, four, eight, or another suitable number). Processors 3110 may be any suitable processors capable of executing instructions. For example, in various embodiments, processors 3110 may be general-purpose or embedded processors implementing any of a variety of instruction set architectures (“ISAs”), such as the x86, PowerPC, SPARC or MIPS ISAs, or any other suitable ISA. In multiprocessor systems, each of processors 3110 may commonly, but not necessarily, implement the same ISA.
In some embodiments, a graphics processing unit (“GPU”) 3112 may participate in providing graphics rendering and/or physics processing capabilities. A GPU may, for example, comprise a highly parallelized processor architecture specialized for graphical computations. In some embodiments, processors 3110 and GPU 3112 may be implemented as one or more of the same type of device.
System memory 3120 may be configured to store instructions and data accessible by processor(s) 3110. In various embodiments, system memory 3120 may be implemented using any suitable memory technology, such as static random access memory (“SRAM”), synchronous dynamic RAM (“SDRAM”), nonvolatile/Flash®-type memory, or any other type of memory. In the illustrated embodiment, program instructions and data implementing one or more desired functions, such as those methods, techniques, and data described above, are shown stored within system memory 3120 as code 3125 and data 3126.
In one embodiment, I/O interface 3130 may be configured to coordinate I/O traffic between processor 3110, system memory 3120, and any peripherals in the device, including network interface 3140 or other peripheral interfaces. In some embodiments, I/O interface 3130 may perform any necessary protocol, timing or other data transformations to convert data signals from one component (e.g., system memory 3120) into a format suitable for use by another component (e.g., processor 3110). In some embodiments, I/O interface 3130 may include support for devices attached through various types of peripheral buses, such as a variant of the Peripheral Component Interconnect (“PCI”) bus standard or the Universal Serial Bus (“USB”) standard, for example. In some embodiments, the function of I/O interface 3130 may be split into two or more separate components, such as a north bridge and a south bridge, for example. Also, in some embodiments some or all of the functionality of I/O interface 3130, such as an interface to system memory 3120, may be incorporated directly into processor 3110.
Network interface 3140 may be configured to allow data to be exchanged between computing device 3100 and other device or devices 3160 attached to a network or networks 3150, such as other computer systems or devices, for example. In various embodiments, network interface 3140 may support communication via any suitable wired or wireless general data networks, such as types of Ethernet networks, for example. Additionally, network interface 3140 may support communication via telecommunications/telephony networks, such as analog voice networks or digital fiber communications networks, via storage area networks, such as Fibre Channel SANs (storage area networks), or via any other suitable type of network and/or protocol.
In some embodiments, system memory 3120 may be one embodiment of a computer-accessible medium configured to store program instructions and data as described above for implementing embodiments of the corresponding methods and apparatus. However, in other embodiments, program instructions and/or data may be received, sent, or stored upon different types of computer-accessible media. Generally speaking, a computer-accessible medium may include non-transitory storage media or memory media, such as magnetic or optical media, e.g., disk or DVD/CD coupled to computing device 3100 via I/O interface 3130. A non-transitory computer-accessible storage medium may also include any volatile or non-volatile media, such as RAM (e.g., SDRAM, DDR SDRAM, RDRAM, SRAM, etc.), ROM, etc., that may be included in some embodiments of computing device 3100 as system memory 3120 or another type of memory. Further, a computer-accessible medium may include transmission media or signals, such as electrical, electromagnetic or digital signals, conveyed via a communication medium, such as a network and/or a wireless link, such as those that may be implemented via network interface 3140. Portions or all of multiple computing devices, such as those illustrated in
A compute node, which may be referred to also as a computing node, may be implemented on a wide variety of computing environments, such as tablet computers, personal computers, smartphones, game consoles, commodity-hardware computers, virtual machines, web services, computing clusters, and computing appliances. Any of these computing devices or environments may, for convenience, be described as compute nodes or as computing nodes.
A network set up by an entity, such as a company or a public sector organization, to provide one or more web services (such as various types of cloud-based computing or storage) accessible via the Internet and/or other networks to a distributed set of clients may be termed a provider network. Such a provider network may include numerous data centers hosting various resource pools, such as collections of physical and/or virtualized computer servers, storage devices, networking equipment, and the like, needed to implement and distribute the infrastructure and web services offered by the provider network. The resources may in some embodiments be offered to clients in various units related to the web service, such as an amount of storage capacity for storage, processing capability for processing, as instances, as sets of related services, and the like. A virtual computing instance may, for example, comprise one or more servers with a specified computational capacity (which may be specified by indicating the type and number of CPUs, the main memory size, and so on) and a specified software stack (e.g., a particular version of an operating system, which may in turn run on top of a hypervisor).
A number of different types of computing devices may be used singly or in combination to implement the resources of the provider network in different embodiments, including general-purpose or special-purpose computer servers, storage devices, network devices, and the like. In some embodiments a client or user may be provided direct access to a resource instance, e.g., by giving a user an administrator login and password. In other embodiments the provider network operator may allow clients to specify execution requirements for specified client applications and schedule execution of the applications on behalf of the client on execution platforms (such as application server instances, Java™ virtual machines (“JVMs”), general-purpose or special-purpose operating systems, platforms that support various interpreted or compiled programming languages, such as Ruby, Perl, Python, C, C++, and the like, or high-performance computing platforms) suitable for the applications, without, for example, requiring the client to access an instance or an execution platform directly. A given execution platform may utilize one or more resource instances in some implementations; in other implementations multiple execution platforms may be mapped to a single resource instance.
In many environments, operators of provider networks that implement different types of virtualized computing, storage and/or other network-accessible functionality may allow customers to reserve or purchase access to resources in various resource acquisition modes. The computing resource provider may provide facilities for customers to select and launch the desired computing resources, deploy application components to the computing resources, and maintain an application executing in the environment. In addition, the computing resource provider may provide further facilities for the customer to quickly and easily scale up or scale down the numbers and types of resources allocated to the application, either manually or through automatic scaling, as demand for or capacity requirements of the application change. The computing resources provided by the computing resource provider may be made available in discrete units, which may be referred to as instances. An instance may represent a physical server hardware platform, a virtual machine instance executing on a server, or some combination of the two. Various types and configurations of instances may be made available, including different sizes of resources executing different operating systems (“OS”) and/or hypervisors, and with various installed software applications, runtimes, and the like. Instances may further be available in specific availability zones, representing a logical region, a fault tolerant region, a data center, or other geographic location of the underlying computing hardware, for example. Instances may be copied within an availability zone or across availability zones to improve the redundancy of the instance, and instances may be migrated within a particular availability zone or across availability zones. As one example, the latency for client communications with a particular server in an availability zone may be less than the latency for client communications with a different server. As such, an instance may be migrated from the higher latency server to the lower latency server to improve the overall client experience.
In some embodiments the provider network may be organized into a plurality of geographical regions, and each region may include one or more availability zones. An availability zone (which may also be referred to as an availability container) in turn may comprise one or more distinct locations or data centers, configured in such a way that the resources in a given availability zone may be isolated or insulated from failures in other availability zones. That is, a failure in one availability zone may not be expected to result in a failure in any other availability zone. Thus, the availability profile of a resource instance is intended to be independent of the availability profile of a resource instance in a different availability zone. Clients may be able to protect their applications from failures at a single location by launching multiple application instances in respective availability zones. At the same time, in some implementations inexpensive and low latency network connectivity may be provided between resource instances that reside within the same geographical region (and network transmissions between resources of the same availability zone may be even faster).
Each of the processes, methods, and algorithms described in the preceding sections may be embodied in, and fully or partially automated by, code modules executed by one or more computers or computer processors. The code modules may be stored on any type of non-transitory computer-readable medium or computer storage device, such as hard drives, solid state memory, optical disc, and/or the like. The processes and algorithms may be implemented partially or wholly in application-specific circuitry. The results of the disclosed processes and process steps may be stored, persistently or otherwise, in any type of non-transitory computer storage, such as, e.g., volatile or non-volatile storage.
The various features and processes described above may be used independently of one another, or may be combined in various ways. All possible combinations and sub-combinations are intended to fall within the scope of this disclosure. In addition, certain methods or process blocks may be omitted in some implementations. The methods and processes described herein are also not limited to any particular sequence, and the blocks or states relating thereto can be performed in other sequences that are appropriate. For example, described blocks or states may be performed in an order other than that specifically disclosed, or multiple blocks or states may be combined in a single block or state. The example blocks or states may be performed in serial, in parallel, or in some other manner. Blocks or states may be added to or removed from the disclosed example embodiments. The example systems and components described herein may be configured differently than described. For example, elements may be added to, removed from, or rearranged compared to the disclosed example embodiments.
It will also be appreciated that various items are illustrated as being stored in memory or on storage while being used, and that these items or portions thereof may be transferred between memory and other storage devices for purposes of memory management and data integrity. Alternatively, in other embodiments some or all of the software modules and/or systems may execute in memory on another device and communicate with the illustrated computing systems via inter-computer communication. Furthermore, in some embodiments, some or all of the systems and/or modules may be implemented or provided in other ways, such as at least partially in firmware and/or hardware, including, but not limited to, one or more application-specific integrated circuits (“ASICs”), standard integrated circuits, controllers (e.g., by executing appropriate instructions, and including microcontrollers and/or embedded controllers), field-programmable gate arrays (“FPGAs”), complex programmable logic devices (“CPLDs”), etc. Some or all of the modules, systems, and data structures may also be stored (e.g., as software instructions or structured data) on a computer-readable medium, such as a hard disk, a memory, a network, or a portable media article to be read by an appropriate device or via an appropriate connection. The systems, modules, and data structures may also be transmitted as generated data signals (e.g., as part of a carrier wave or other analog or digital propagated signal) on a variety of computer-readable transmission media, including wireless-based and wired/cable-based media, and may take a variety of forms (e.g., as part of a single or multiplexed analog signal, or as multiple discrete digital packets or frames). Such computer program products may also take other forms in other embodiments. Accordingly, the present invention may be practiced with other computer system configurations.
Conditional language used herein, such as, among others, “can,” “could,” “might,” “may,” “e.g.,” and the like, unless specifically stated otherwise, or otherwise understood within the context as used, is generally intended to convey that certain embodiments include, while other embodiments do not include, certain features, elements, and/or steps. Thus, such conditional language is not generally intended to imply that features, elements and/or steps are in any way required for one or more embodiments or that one or more embodiments necessarily include logic for deciding, with or without author input or prompting, whether these features, elements and/or steps are included or are to be performed in any particular embodiment. The terms “comprising,” “including,” “having,” and the like are synonymous and are used inclusively, in an open-ended fashion, and do not exclude additional elements, features, acts, operations, and so forth. Also, the term “or” is used in its inclusive sense (and not in its exclusive sense) so that when used, for example, to connect a list of elements, the term “or” means one, some, or all of the elements in the list.
While certain example embodiments have been described, these embodiments have been presented by way of example only, and are not intended to limit the scope of the inventions disclosed herein. Thus, nothing in the foregoing description is intended to imply that any particular feature, characteristic, step, module, or block is necessary or indispensable. Indeed, the novel methods and systems described herein may be embodied in a variety of other forms; furthermore, various omissions, substitutions and changes in the form of the methods and systems described herein may be made without departing from the spirit of the inventions disclosed herein. The accompanying claims and their equivalents are intended to cover such forms or modifications as would fall within the scope and spirit of certain of the inventions disclosed herein.
Panel systems having three, four, five, and six LED-string-driven lighting channels with particular color points were simulated. For each device, LED strings and recipient luminophoric mediums with particular emissions were selected, and then white light rendering capabilities were calculated for a select number of representative points on or near the Planckian locus between about 1800K and 10000K. Ra, R9, R13, R15, LER, Rf, Rg, CLA, CS, EML, BLH factor, CAF, CER, COI, and circadian performance values were calculated at each representative point.
The calculations were performed with Scilab (Scilab Enterprises, Versailles, France), LightTools (Synopsis, Inc., Mountain View, Calif.), and custom software created using Python (Python Software Foundation, Beaverton, Oreg.). Each LED string was simulated with an LED emission spectrum and excitation and emission spectra of luminophoric medium(s). For luminophoric mediums comprising phosphors, the simulations also included the absorption spectrum and particle size of phosphor particles. The LED strings generating combined emissions within blue, short-blue-pumped cyan, and red color regions were prepared using spectra of a LUXEON Z Color Line royal blue LEDs (product code LXZ1-PR01) of color bin codes 3, 4, 5, or 6, one or more LUXEON Z Color Line blue LEDs (LXZ1-PB01) of color bin code 1 or 2, or one or more LUXEON royal blue LEDs (product code LXML-PR01 and LXML-PR02) of color bins 3, 4, 5, or 6 (Lumileds Holding B.V., Amsterdam, Netherlands). The LED strings generating combined emissions with color points within the long-blue-pumped cyan regions were prepared using spectra of LUXEON Rebel Blue LEDs (LXML-PB01, LXML-PB02) of color bins 1, 2, 3, 4, or 5, which have peak wavelengths ranging from 460 nm to 485 nm, or LUXEON Rebel Cyan LEDs (LXML-PE01) of color bins 1, 2, 3, 4, or 5, which have peak wavelengths raving from 460 nm to 485 nm. Similar LEDs from other manufacturers such as OSRAM GmbH and Cree, Inc. could also be used. The LED strings generating combined emissions with color points within the yellow and violet regions were simulated using spectra of LEDs having peak wavelengths of between about 380 nm and about 420 nm, such as one or more 410 nm peak wavelength violet LEDs, one or more LUXEON Z UV LEDs (product codes LHUV-0380-, LHUV-0385-, LHUV-0390-, LHUV-0395-, LHUV-0400-, LHUV-0405-, LHUV-0410-, LHUV-0415-, LHUV-0420-,) (Lumileds Holding B.V., Amsterdam, Netherlands), one or more LUXEON UV FC LEDs (product codes LxF3-U410) (Lumileds Holding B.V., Amsterdam, Netherlands), one or more LUXEON UV U LEDs (product code LHUV-0415-) (Lumileds Holding B.V., Amsterdam, Netherlands), for example.
The emission, excitation and absorption curves are available from commercially available phosphor manufacturers such as Mitsubishi Chemical Holdings Corporation (Tokyo, Japan), Intematix Corporation (Fremont, Calif.), EMD Performance Materials of Merck KGaA (Darmstadt, Germany), and PhosphorTech Corporation (Kennesaw, Ga.). The luminophoric mediums used in the LED strings were combinations of one or more of Compositions A, B, and D and one or more of Compositions C, E, and F as described more fully elsewhere herein. Those of skill in the art appreciate that various combinations of LEDs and luminescent blends can be combined to generate combined emissions with desired color points on the 1931 CIE chromaticity diagram and the desired spectral power distributions.
Additionally, to any of the examples or simulations described herein a LRNE emission wavelengths of Long Red (>625 to <700 nms with peak wavelengths >640-670 nms) may be added. Further, a Near-Infrared (typical ranges from >700 and <1400 nms (with typical peak wavelengths: 850 nm, 940 nm, 1064 nm)) via LEDs or via a LRNE LED string which is driven by a blue LED utilizing a recipient luminophoric media may be added.
A panel system was simulated having four LED strings. A first LED string is driven by a blue LED having peak emission wavelength of approximately 450 nm to approximately 455 nm, utilizes a recipient luminophoric medium, and generates a combined emission of a blue channel having the color point and characteristics of Blue Channel 1 as described above and shown in Tables 3-5. A second LED string is driven by a blue LED having peak emission wavelength of approximately 450 nm to approximately 455 nm, utilizes a recipient luminophoric medium, and generates a combined emission of a red channel having the color point and characteristics of Red Channel 1 as described above and shown in Tables 3-5 and 7-9. The red channel includes bioactive LRNE emissions. A third LED string is driven by a blue LED having peak emission wavelength of approximately 450 nm to approximately 455 nm, utilizes a recipient luminophoric medium, and generates a combined emission of a short-blue-pumped cyan color channel having the color point and characteristics of Short-Blue-Pumped Cyan Channel 1 as described above and shown in Tables 3-5. A fourth LED string is driven by a cyan LED having peak emission wavelength of approximately 505 nm, utilizes a recipient luminophoric medium, and generates a combined emission of a long-blue-pumped cyan channel having the color point and characteristics of Long-Blue-Pumped Cyan Channel 1 as described above and shown in Tables 3-5.
Tables 16-19 shows light-rendering characteristics of the device for a representative selection of white light color points near the Planckian locus. Table 18 shows data for white light color points generated using only the first, second, and third LED strings in high-CM mode. Table 16 shows data for white light color points generated using all four LED strings in highest-CM mode. Table 17 shows data for white light color points generated using only the first, second, and fourth LED strings in high-EML mode. Table 19 show performance comparison between white light color points generated at similar approximate CCT values under high-EML mode and high-CM mode.
Further simulations were performed to optimize the outputs of the panel system of Example 1. Signal strength ratios for the channels were calculated to generate 100 lumen total flux output white light at each CCT point. The relative lumen outputs for each of the channels is shown, along with the light-rendering characteristics, in Tables 20-22.
A panel system was simulated having four LED strings. A first LED string is driven by a blue LED having peak emission wavelength of approximately 450 nm to approximately 455 nm, utilizes a recipient luminophoric medium, and generates a combined emission of a blue channel having the color point and characteristics of Blue Channel 1 as described above and shown in Tables 3-5. A second LED string is driven by a blue LED having peak emission wavelength of approximately 450 nm to approximately 455 nm, utilizes a recipient luminophoric medium, and generates a combined emission of a red channel having the color point and characteristics of Red Channel 1 as described above and shown in Tables 3-5 and 7-9. The red channel includes bioactive LRNE emissions. A fifth LED string is driven by a violet LED having peak emission wavelength of about 380 nm, utilizes a recipient luminophoric medium, and generates a combined emission of a yellow color channel having the color point and characteristics of Yellow Channel 1 as described above and shown in Tables 5 and 13-15. A sixth LED string is driven by a violet LED having peak emission wavelength of about 380 nm, utilizes a recipient luminophoric medium, and generates a combined emission of a violet channel having the color point and characteristics of Violet Channel 1 as described above and shown in Tables 5 and 10-12.
Tables 23-24 shows light-rendering characteristics of the device for a representative selection of white light color points near the Planckian locus. Table 23 shows data for white light color points generated using the first, second, fifth, and sixth LED strings, i.e. the blue, red, yellow, and violet channels, in low-EML mode. Table 24 shows data for white light color points generated using the second, fifth, and sixth LED strings, i.e. the red, yellow, and violet channels, in very-low-EML mode.
A panel system was simulated having four LED strings. A first LED string is driven by a blue LED having peak emission wavelength of approximately 450 nm to approximately 455 nm, utilizes a recipient luminophoric medium, and generates a combined emission of a blue channel having the color point and characteristics of Blue Channel 1 as described above and shown in Tables 3-5. A second LED string is driven by a blue LED having peak emission wavelength of approximately 450 nm to approximately 455 nm, utilizes a recipient luminophoric medium, and generates a combined emission of a red channel having the color point and characteristics of Red Channel 1 as described above and shown in Tables 3-5 and 7-9. A fifth LED string is driven by a violet LED having peak emission wavelength of about 400 nm, utilizes a recipient luminophoric medium, and generates a combined emission of a yellow color channel having the color point and characteristics of Yellow Channel 2 as described above and shown in Tables 5 and 13-15. A sixth LED string is driven by a violet LED having peak emission wavelength of about 400 nm, utilizes a recipient luminophoric medium, and generates a combined emission of a violet channel having the color point and characteristics of Violet Channel 2 as described above and shown in Tables 5 and 10-12.
Tables 25-26 shows light-rendering characteristics of the device for a representative selection of white light color points near the Planckian locus. Table 25 shows data for white light color points generated using the first, second, fifth, and sixth LED strings, i.e. the blue, red, yellow, and violet channels, in low-EML mode. Table 26 shows data for white light color points generated using the second, fifth, and sixth LED strings, i.e. the red, yellow, and violet channels, in very-low-EML mode.
A panel system was simulated having four LED strings. A first LED string is driven by a blue LED having peak emission wavelength of approximately 450 nm to approximately 455 nm, utilizes a recipient luminophoric medium, and generates a combined emission of a blue channel having the color point and characteristics of Blue Channel 1 as described above and shown in Tables 3-5. A second LED string is driven by a blue LED having peak emission wavelength of approximately 450 nm to approximately 455 nm, utilizes a recipient luminophoric medium, and generates a combined emission of a red channel having the color point and characteristics of Red Channel 1 as described above and shown in Tables 3-5 and 7-9. A fifth LED string is driven by a violet LED having peak emission wavelength of about 410 nm, utilizes a recipient luminophoric medium, and generates a combined emission of a yellow color channel having the color point and characteristics of Yellow Channel 3 as described above and shown in Tables 5 and 13-15. A sixth LED string is driven by a violet LED having peak emission wavelength of about 410 nm, utilizes a recipient luminophoric medium, and generates a combined emission of a violet channel having the color point and characteristics of Violet Channel 3 as described above and shown in Tables 5 and 10-12.
Tables 27-28 shows light-rendering characteristics of the device for a representative selection of white light color points near the Planckian locus. Table 27 shows data for white light color points generated using the first, second, fifth, and sixth LED strings, i.e. the blue, red, yellow, and violet channels, in low-EML mode. Table 28 shows data for white light color points generated using the second, fifth, and sixth LED strings, i.e. the red, yellow, and violet channels, in very-low-EML mode.
A panel system was simulated having four LED strings. A first LED string is driven by a blue LED having peak emission wavelength of approximately 450 nm to approximately 455 nm, utilizes a recipient luminophoric medium, and generates a combined emission of a blue channel having the color point and characteristics of Blue Channel 1 as described above and shown in Tables 3-5. A second LED string is driven by a blue LED having peak emission wavelength of approximately 450 nm to approximately 455 nm, utilizes a recipient luminophoric medium, and generates a combined emission of a red channel having the color point and characteristics of Red Channel 1 as described above and shown in Tables 3-5 and 7-9. A fifth LED string is driven by a violet LED having peak emission wavelength of about 420 nm, utilizes a recipient luminophoric medium, and generates a combined emission of a yellow color channel having the color point and characteristics of Yellow Channel 4 as described above and shown in Tables 5 and 13-15. A sixth LED string is driven by a violet LED having peak emission wavelength of about 420 nm, utilizes a recipient luminophoric medium, and generates a combined emission of a violet channel having the color point and characteristics of Violet Channel 4 as described above and shown in Tables 5 and 10-12.
Table 29 shows light-rendering characteristics of the device for a representative selection of white light color points near the Planckian locus. Table 29 shows data for white light color points generated using the second, fifth, and sixth LED strings, i.e. the red, yellow, and violet channels, in very-low-EML mode.
A panel system was simulated having six lighting channels. The six lighting channels are a combination of the lighting channels of Example 1 and Example 3: Blue Channel 1, Red Channel 1, Short-Blue-Pumped Cyan Channel 1, Long-Blue-Pumped Cyan Channel 1, Yellow Channel 1, and Violet Channel 1. As shown above with reference to Examples 1 and 3, the device can be operated in various operating modes with different combinations of lighting channels. Tables 30-31 show EML and CS values at various nominal CCT values under different operating modes and the % changes that can be achieved by switching between operating modes at the same nominal CCT.
A panel system was simulated having six lighting channels. The six lighting channels are a combination of the lighting channels of Example 1 and Example 4: Blue Channel 1, Red Channel 1, Short-Blue-Pumped Cyan Channel 1, Long-Blue-Pumped Cyan Channel 1, Yellow Channel 2, and Violet Channel 2. As shown above with reference to Examples 1 and 4, the device can be operated in various operating modes with different combinations of lighting channels. Tables 32-33 show EML and CS values at various nominal CCT values under different operating modes and the % changes that can be achieved by switching between operating modes at the same nominal CCT.
A panel system was simulated having six lighting channels. The six lighting channels are a combination of the lighting channels of Example 1 and Example 5: Blue Channel 1, Red Channel 1, Short-Blue-Pumped Cyan Channel 1, Long-Blue-Pumped Cyan Channel 1, Yellow Channel 3, and Violet Channel 3. As shown above with reference to Examples 1 and 5, the device can be operated in various operating modes with different combinations of lighting channels. Tables 34-35 show EML and CS values at various nominal CCT values under different operating modes and the % changes that can be achieved by switching between operating modes at the same nominal CCT.
A panel system was simulated having six lighting channels. The six lighting channels are a combination of the lighting channels of Example 1 and Example 6: Blue Channel 1, Red Channel 1, Short-Blue-Pumped Cyan Channel 1, Long-Blue-Pumped Cyan Channel 1, Yellow Channel 4, and Violet Channel 4. As shown above with reference to Examples 1 and 6, the device can be operated in various operating modes with different combinations of lighting channels. Tables 36-37 show EML and CS values at various nominal CCT values under different operating modes and the % changes that can be achieved by switching between operating modes at the same nominal CCT.
In some implementations, the panel systems of the present disclosure can comprise three lighting channels as described elsewhere herein. In certain implementations, the three lighting channels comprise a red lighting channel, a yellow lighting channel, and a violet lighting channel. The panel systems can be operated in a very-low-EML operational mode in which the red lighting channel, the yellow lighting channel, and the violet lighting channel are used. The panel systems can further comprise a control system configured to control the relative intensities of light generated in the red lighting channel, the yellow lighting channel, and the violet lighting channel in order to generate white light at a plurality of points near the Planckian locus between about 4000K and about 1400K CCT.
In some implementations, the panel systems of the present disclosure can comprise four lighting channels as described elsewhere herein. In certain implementations, the four lighting channels comprise a red lighting channel, a yellow lighting channel, a violet lighting channel, and a blue lighting channel. In some implementations, the panel systems can be operated in a very-low-EML operating mode in which the red lighting channel, the yellow lighting channel, and the violet lighting channel are used. In further implementations, the panel systems can be operated in a low-EML operational mode in which the blue lighting channel, the red lighting channel, the yellow lighting channel, and the violet lighting channel are used. In certain implementations, the panel systems can transition between the low-EML and the very-low-EML operating modes in one or both directions while the panel systems are providing white light along a path of color points near the Planckian locus. In further implementations, the panel systems can transition between the low-EML and very-low-EML operational modes in one or both directions while the panel systems are changing the CCT of the white light along the path of color points near the Planckian locus. In some implementations the low-EML operating mode can be used in generating white light near the Planckian locus with CCT values between about 10000K and about 1800K. In further implementations the very-low-EML operational mode can be used in generating white light near the Planckian locus with CCT values between about 4000K and about 1400K.
In some implementations, the panel systems of the present disclosure can comprise five lighting channels as described elsewhere herein. In certain implementations, the five lighting channels comprise a red lighting channel, a yellow lighting channel, a violet lighting channel, a blue lighting channel, and a long-blue-pumped cyan lighting channel. In some implementations, the panel systems can be operated in a very-low-EML operating mode in which the red lighting channel, the yellow lighting channel, and the violet lighting channel are used. In further implementations, the panel systems can be operated in a low-EML operating mode in which the blue lighting channel, the red lighting channel, the yellow lighting channel, and the violet lighting channel are used. In yet further implementations, the panel systems can be operated in a high-EML operating mode in which the blue lighting channel, the red lighting channel, and the long-blue-pumped cyan lighting channel are used. In certain implementations, the panel systems can transition among two or more of the low-EML, the very-low-EML, and high-EML operating modes while the panel systems are providing white light along a path of color points near the Planckian locus. In further implementations, the panel systems can transition among two or more of the low-EML, the very-low-EML, and high-EML operating modes while the panel systems are changing the CCT of the white light along the path of color points near the Planckian locus. In some implementations the low-EML operational mode can be used in generating white light near the Planckian locus with CCT values between about 10000K and about 1800K. In further implementations the very-low-EML operating mode can be used in generating white light near the Planckian locus with CCT values between about 4000K and about 1400K. In yet further implementations, the high-EML operating mode can be used in generating white light near the Planckian locus with CCT values between about 10000K and about 1800K.
A panel system was simulated having three LED strings. A first LED string is a commercially available 6500K white LED having a spectral power distribution as shown in
Table 64 shows light-rendering characteristics of the panel system for a representative selection of white light color points near the Planckian locus.
A panel system was simulated having three LED strings. A first LED string is a commercially available 6500K white LED having a spectral power distribution as shown in
Table 65 shows light-rendering characteristics of the panel system for a representative selection of white light color points near the Planckian locus
A panel system was simulated having four LED strings. A first LED string is driven by a blue LED having peak emission wavelength of approximately 450 nm to approximately 455 nm, utilizes a recipient luminophoric medium, and generates a combined emission of a blue channel having the color point and characteristics of Blue Channel 1 as described above and shown in Tables 3-5. A second LED string generates a combined emission of a LRNE red channel having the color point and characteristics of Long-Red Channel A, Red Channel B, or Exemplary Long-Red Channel Average as described above and shown in Tables 7-9. A third LED string is driven by a blue LED having peak emission wavelength of approximately 450 nm to approximately 455 nm, utilizes a recipient luminophoric medium, and generates a combined emission of a short-blue-pumped cyan color channel having the color point and characteristics of Short-Blue-Pumped Cyan Channel 1 as described above and shown in Tables 3-5. A fourth LED string is driven by a cyan LED having peak emission wavelength of approximately 505 nm, utilizes a recipient luminophoric medium, and generates a combined emission of a long-blue-pumped cyan channel having the color point and characteristics of Long-Blue-Pumped Cyan Channel 1 as described above and shown in Tables 3-5.
White light color points can generated using only the first, second, and third LED strings in a high-CM mode. White light color points can be generated using all four LED strings in a highest-CM mode. White light color points can be generated using only the first, second, and fourth LED strings in a high-EML mode.
A panel system was simulated having four LED strings. A first LED string is driven by a blue LED having peak emission wavelength of approximately 450 nm to approximately 455 nm, utilizes a recipient luminophoric medium, and generates a combined emission of a blue channel having the color point and characteristics of Blue Channel 1 as described above and shown in Tables 3-5. A second LED string generates a combined emission of a LRNE red channel having the color point and characteristics of Long-Red Channel A, Red Channel B, or Exemplary Long-Red Channel Average as described above and shown in Tables 7-9. A fifth LED string is driven by a violet LED having peak emission wavelength of about 380 nm, utilizes a recipient luminophoric medium, and generates a combined emission of a yellow color channel having the color point and characteristics of Yellow Channel 1 as described above and shown in Tables 5 and 13-15. A sixth LED string is driven by a violet LED having peak emission wavelength of about 380 nm, utilizes a recipient luminophoric medium, and generates a combined emission of a violet channel having the color point and characteristics of Violet Channel 1 as described above and shown in Tables 5 and 10-12.
White light color points can be generated using the first, second, fifth, and sixth LED strings, i.e. the blue, long-red, yellow, and violet channels, in low-EML mode. White light color points can be generated using the second, fifth, and sixth LED strings, i.e. the long-red, yellow, and violet channels, in very-low-EML mode.
A panel system was simulated having four LED strings. A first LED string is driven by a blue LED having peak emission wavelength of approximately 450 nm to approximately 455 nm, utilizes a recipient luminophoric medium, and generates a combined emission of a blue channel having the color point and characteristics of Blue Channel 1 as described above and shown in Tables 3-5. A second LED string generates a combined emission of a LRNE red channel having the color point and characteristics of Long-Red Channel A, Red Channel B, or Exemplary Long-Red Channel Average as described above and shown in Tables 7-9. A fifth LED string is driven by a violet LED having peak emission wavelength of about 400 nm, utilizes a recipient luminophoric medium, and generates a combined emission of a yellow color channel having the color point and characteristics of Yellow Channel 2 as described above and shown in Tables 5 and 13-15. A sixth LED string is driven by a violet LED having peak emission wavelength of about 400 nm, utilizes a recipient luminophoric medium, and generates a combined emission of a violet channel having the color point and characteristics of Violet Channel 2 as described above and shown in Tables 5 and 10-12.
White light color points can be generated using the first, second, fifth, and sixth LED strings, i.e. the blue, long-red, yellow, and violet channels, in low-EML mode. White light color points can be generated using the second, fifth, and sixth LED strings, i.e. the long-red, yellow, and violet channels, in very-low-EML mode.
A panel system was simulated having four LED strings. A first LED string is driven by a blue LED having peak emission wavelength of approximately 450 nm to approximately 455 nm, utilizes a recipient luminophoric medium, and generates a combined emission of a blue channel having the color point and characteristics of Blue Channel 1 as described above and shown in Tables 3-5. A second LED string generates a combined emission of a LRNE red channel having the color point and characteristics of Long-Red Channel A, Red Channel B, or Exemplary Long-Red Channel Average as described above and shown in Tables 7-9. A fifth LED string is driven by a violet LED having peak emission wavelength of about 410 nm, utilizes a recipient luminophoric medium, and generates a combined emission of a yellow color channel having the color point and characteristics of Yellow Channel 3 as described above and shown in Tables 5 and 13-15. A sixth LED string is driven by a violet LED having peak emission wavelength of about 410 nm, utilizes a recipient luminophoric medium, and generates a combined emission of a violet channel having the color point and characteristics of Violet Channel 3 as described above and shown in Tables 5 and 10-12.
White light color points can be generated using the first, second, fifth, and sixth LED strings, i.e. the blue, long-red, yellow, and violet channels, in low-EML mode. White light color points can be generated using the second, fifth, and sixth LED strings, i.e. the long-red, yellow, and violet channels, in very-low-EML mode.
A panel system was simulated having four LED strings. A first LED string is driven by a blue LED having peak emission wavelength of approximately 450 nm to approximately 455 nm, utilizes a recipient luminophoric medium, and generates a combined emission of a blue channel having the color point and characteristics of Blue Channel 1 as described above and shown in Tables 3-5. A second LED string generates a combined emission of a LRNE red channel having the color point and characteristics of Long-Red Channel A, Red Channel B, or Exemplary Long-Red Channel Average as described above and shown in Tables 7-9. A fifth LED string is driven by a violet LED having peak emission wavelength of about 420 nm, utilizes a recipient luminophoric medium, and generates a combined emission of a yellow color channel having the color point and characteristics of Yellow Channel 4 as described above and shown in Tables 5 and 13-15. A sixth LED string is driven by a violet LED having peak emission wavelength of about 420 nm, utilizes a recipient luminophoric medium, and generates a combined emission of a violet channel having the color point and characteristics of Violet Channel 4 as described above and shown in Tables 5 and 10-12.
White light color points can be generated using the second, fifth, and sixth LED strings, i.e. the long-red, yellow, and violet channels, in very-low-EML mode.
A panel system was simulated having six lighting channels. The six lighting channels are a combination of the lighting channels of Example 13C and Example 13E: Blue Channel 1, a LRNE long-red channel, Short-Blue-Pumped Cyan Channel 1, Long-Blue-Pumped Cyan Channel 1, Yellow Channel 1, and Violet Channel 1. As shown above with reference to Examples 13C and 13E, the device can be operated in various operating modes with different combinations of lighting channels.
A panel system was simulated having six lighting channels. The six lighting channels are a combination of the lighting channels of Example 13C and Example 13F: Blue Channel 1, a LRNE long-red channel, Short-Blue-Pumped Cyan Channel 1, Long-Blue-Pumped Cyan Channel 1, Yellow Channel 2, and Violet Channel 2. As shown above with reference to Examples 13C and 13F, the device can be operated in various operating modes with different combinations of lighting channels.
A panel system was simulated having six lighting channels. The six lighting channels are a combination of the lighting channels of Example 13C and Example 13G: Blue Channel 1, a LRNE long-red channel, Short-Blue-Pumped Cyan Channel 1, Long-Blue-Pumped Cyan Channel 1, Yellow Channel 3, and Violet Channel 3. As shown above with reference to Examples 13C and 13G, the device can be operated in various operating modes with different combinations of lighting channels.
A panel system was simulated having six lighting channels. The six lighting channels are a combination of the lighting channels of Example 13C and Example 13H: Blue Channel 1, a LRNE long-red channel, Short-Blue-Pumped Cyan Channel 1, Long-Blue-Pumped Cyan Channel 1, Yellow Channel 4, and Violet Channel 4. As shown above with reference to Examples 13C and 13H, the device can be operated in various operating modes with different combinations of lighting channels.
In some implementations, the panel systems of the present disclosure can comprise three lighting channels as described elsewhere herein. In certain implementations, the three lighting channels comprise a LRNE long-red lighting channel, a yellow lighting channel, and a violet lighting channel. The panel systems can be operated in a very-low-EML operating mode in which the long-red lighting channel, the yellow lighting channel, and the violet lighting channel are used. The panel systems can further comprise a control system configured to control the relative intensities of light generated in the long-red lighting channel, the yellow lighting channel, and the violet lighting channel in order to generate white light at a plurality of points near the Planckian locus between about 4000K and about 1400K CCT.
In some implementations, the panel systems of the present disclosure can comprise four lighting channels as described elsewhere herein. In certain implementations, the four lighting channels comprise a LRNE long-red lighting channel, a yellow lighting channel, a violet lighting channel, and a blue lighting channel. In some implementations, the panel systems can be operated in a very-low-EML operating mode in which the long-red lighting channel, the yellow lighting channel, and the violet lighting channel are used. In further implementations, the panel systems can be operated in a low-EML operating mode in which the blue lighting channel, the long-red lighting channel, the yellow lighting channel, and the violet lighting channel are used. In certain implementations, the panel systems can transition between the low-EML and the very-low-EML operating modes in one or both directions while the panel systems are providing white light along a path of color points near the Planckian locus. In further implementations, the panel systems can transition between the low-EML and very-low-EML operating modes in one or both directions while the panel systems are changing the CCT of the white light along the path of color points near the Planckian locus. In some implementations the low-EML operating mode can be used in generating white light near the Planckian locus with CCT values between about 10000K and about 1800K. In further implementations the very-low-EML operating mode can be used in generating white light near the Planckian locus with CCT values between about 4000K and about 1400K.
In some implementations, the panel systems of the present disclosure can comprise five lighting channels as described elsewhere herein. In certain implementations, the five lighting channels comprise a LRNE long-red lighting channel, a yellow lighting channel, a violet lighting channel, a blue lighting channel, and a long-blue-pumped cyan lighting channel. In some implementations, the panel systems can be operated in a very-low-EML operating mode in which the long-red lighting channel, the yellow lighting channel, and the violet lighting channel are used. In further implementations, the panel systems can be operated in a low-EML operating mode in which the blue lighting channel, the long-red lighting channel, the yellow lighting channel, and the violet lighting channel are used. In yet further implementations, the panel systems can be operated in a high-EML operating mode in which the blue lighting channel, the long-red lighting channel, and the long-blue-pumped cyan lighting channel are used. In certain implementations, the panel systems can transition among two or more of the low-EML, the very-low-EML, and high-EML operating modes while the panel systems are providing white light along a path of color points near the Planckian locus. In further implementations, the panel systems can transition among two or more of the low-EML, the very-low-EML, and high-EML operating modes while the panel systems are changing the CCT of the white light along the path of color points near the Planckian locus. In some implementations the low-EML operating mode can be used in generating white light near the Planckian locus with CCT values between about 10000K and about 1800K. In further implementations the very-low-EML operating mode can be used in generating white light near the Planckian locus with CCT values between about 4000K and about 1400K. In yet further implementations, the high-EML operating mode can be used in generating white light near the Planckian locus with CCT values between about 10000K and about 1800K
Exemplary first and second lighting channels, and lighting systems having pairs of first and second lighting channels, were simulated. The simulated lighting systems can be used to provide one or more white light sources for a backlighting system in the panel systems of the present disclosure. For each lighting channel, LED strings and recipient luminophoric mediums with particular emissions were selected, and then spectral power distributions and various light rendering characteristics and circadian-stimulating energy characteristics were calculated. Ra, R9, R13, R15, LER, Rf, Rg, CLA, CS, EML, BLH factor, CAF, CER, COI, GAI, GAI15, GAIBB, and circadian-stimulating energy characteristics were calculated at each representative point. Characteristics and aspects of the spectral power distributions are shown in Tables 3-12 and
The calculations were performed with Scilab (Scilab Enterprises, Versailles, France), LightTools (Synopsis, Inc., Mountain View, Calif.), and custom software created using Python (Python Software Foundation, Beaverton, Oreg.). Each lighting channel was simulated with an LED emission spectrum and excitation and emission spectra of luminophoric medium(s). The luminophoric mediums can comprise luminescent compositions of phosphors, quantum dots, or combinations thereof, with simulations performed based on absorption/emission spectrums and particle sizes. The exemplary first lighting channels were simulated using spectra of LEDs having peak wavelengths of between about 440 nm and about 510 nm, such as a 450 nm peak wavelength blue LED, one or more LUXEON Z Color Line royal blue LEDs (product code LXZ1-PR01) of color bin codes 3, 4, 5, or 6 (Lumileds Holding B.V., Amsterdam, Netherlands), one or more LUXEON Z Color Line blue LEDs (LXZ1-PB01) of color bin code 1 or 2 (Lumileds Holding B.V., Amsterdam, Netherlands), one or more LUXEON royal blue LEDs (product code LXML-PR01 and LXML-PR02) of color bins 3, 4, 5, or 6 (Lumileds Holding B.V., Amsterdam, Netherlands), one or more LUXEON Rebel Blue LEDs (LXML-PB01, LXML-PB02) of color bins 1, 2, 3, 4, or 5 (Lumileds Holding B.V., Amsterdam, Netherlands), or one or more LUXEON Rebel Cyan LEDs (LXML-PE01) of color bins 1, 2, 3, 4, or 5 (Lumileds Holding B.V., Amsterdam, Netherlands), for example. The exemplary second lighting channels were simulated using spectra of LEDs having peak wavelengths of between about 380 nm and about 420 nm, such as one or more 410 nm peak wavelength violet LEDs, one or more LUXEON Z UV LEDs (product codes LHUV-0380-, LHUV-0385-, LHUV-0390-, LHUV-0395-, LHUV-0400-, LHUV-0405-, LHUV-0410-, LHUV-0415-, LHUV-0420-,) (Lumileds Holding B.V., Amsterdam, Netherlands), one or more LUXEON UV FC LEDs (product codes LxF3-U410) (Lumileds Holding B.V., Amsterdam, Netherlands), one or more LUXEON UV U LEDs (product code LHUV-0415-) (Lumileds Holding B.V., Amsterdam, Netherlands), for example. Similar LEDs from other manufacturers such as OSRAM GmbH and Cree, Inc. that provide a saturated output at the desired peak wavelengths could also be used.
The emission, excitation and absorption curves for phosphors and quantum dots are available from commercial manufacturers such as Mitsubishi Chemical Holdings Corporation (Tokyo, Japan), Intematix Corporation (Fremont, Calif.), EMD Performance Materials of Merck KGaA (Darmstadt, Germany), and PhosphorTech Corporation (Kennesaw, Ga.). The luminophoric mediums used in the first and second lighting channels were simulated as combinations of one or more of luminescent compositions as described more fully elsewhere herein. Those of skill in the art appreciate that various combinations of LEDs and luminescent blends can be combined to generate combined emissions with desired color points on the 1931 CIE chromaticity diagram and the desired spectral power distributions.
A lighting system was simulated having a first lighting channel having the characteristics shown as “4000K Ch1” in Tables 44, 46, 48, 50, 52, 53, and 56 and a second lighting channel having the characteristics shown as “2400K Ch1” in Tables 44, 45, 47, 49, 51, 53, and 56 and in
A lighting system was simulated having a first lighting channel having the characteristics shown as “4000K Ch2” in Tables 44, 46, 48, 50, 52, 53, and 56 and in
A lighting system was simulated having a first lighting channel having the characteristics shown as “4000K Ch3” in Tables 44, 46, 48, 50, 52, 53, and 56 and in
A lighting system was simulated having a first lighting channel having the characteristics shown as “4000K Ch4” in Tables 44, 46, 48, 50, 52, 53, and 56 and in
A lighting system was simulated having a first lighting channel having the characteristics shown as “5000K Ch1” in Tables 44, 46, 48, 50, 52, 53, and 56 and in
A lighting system was simulated having a first lighting channel having the characteristics shown as “4000K Ch1” in Tables 44, 46, 48, 50, 52, 53, and 56 and a second lighting channel having the characteristics shown as “2400K Ch2” in Tables 44, 45, 47, 49, 51, 53, and 56 and in
A lighting system was simulated having a first lighting channel having the characteristics shown as “4000K Ch2” in Tables 44, 46, 48, 50, 52, 53, and 56 and in
A lighting system was simulated having a first lighting channel having the characteristics shown as “4000K Ch3” in Tables 44, 46, 48, 50, 52, 53, and 56 and in
A lighting system was simulated having a first lighting channel having the characteristics shown as “4000K Ch4” in Tables 44, 46, 48, 50, 52, 53, and 56 and in
A lighting system was simulated having a first lighting channel having the characteristics shown as “5000K Ch1” in Tables 44, 46, 48, 50, 52, 53, and 56 and in
A lighting system was simulated having a first lighting channel having the characteristics shown as “4000K Ch1” in Tables 44, 46, 48, 50, 52, 53, and 56 and a second lighting channel having the characteristics shown as “2400K Ch3” in Tables 44, 45, 47, 49, 51, 53, and 56 and in
A lighting system was simulated having a first lighting channel having the characteristics shown as “4000K Ch2” in Tables 44, 46, 48, 50, 52, 53, and 56 and in
A lighting system was simulated having a first lighting channel having the characteristics shown as “4000K Ch3” in Tables 44, 46, 48, 50, 52, 53, and 56 and in
A lighting system was simulated having a first lighting channel having the characteristics shown as “4000K Ch4” in Tables 44, 46, 48, 50, 52, 53, and 56 and in
A lighting system was simulated having a first lighting channel having the characteristics shown as “5000K Ch1” in Tables 44, 46, 48, 50, 52, 53, and 56 and in
A lighting system was simulated having a first lighting channel having the characteristics shown as “4000K Ch1” in Tables 44, 46, 48, 50, 52, 53, and 56 and a second lighting channel having the characteristics shown as “1800K Ch1” in Tables 44, 45, 47, 49, 51, 53, and 56 and in
A lighting system was simulated having a first lighting channel having the characteristics shown as “4000K Ch2” in Tables 44, 46, 48, 50, 52, 53, and 56 and in
A lighting system was simulated having a first lighting channel having the characteristics shown as “4000K Ch3” in Tables 44, 46, 48, 50, 52, 53, and 56 and in
A lighting system was simulated having a first lighting channel having the characteristics shown as “4000K Ch4” in Tables 44, 46, 48, 50, 52, 53, and 56 and in
A lighting system was simulated having a first lighting channel having the characteristics shown as “5000K Ch1” in Tables 44, 46, 48, 50, 52, 53, and 56 and in
A lighting system was simulated having a first lighting channel having the characteristics shown as “Exemplary 1st channels avg” in Tables 44, 46, 48, 50, 52, 53, and 56, and a second lighting channel having the characteristics shown as “Exemplary 2nd channels avg” in Tables 44, 45, 47, 49, 51, 53, and 56. The first lighting channel has a first color point at (0.3735, 0.3719) ccx, ccy coordinates. The second lighting channel has a second color point at (0.5021, 0.4137) ccx, ccy coordinates. The first lighting channel can comprise an LED having a 450 nm peak wavelength and an associated luminophoric medium having one or more phosphors, quantum dots, or a mixture thereof. The second lighting channel can comprise an LED having a 410 nm peak wavelength and an associated luminophoric medium having one or more phosphors, quantum dots, or a mixture thereof
A panel system was simulated having three LED strings for use in a warm-dim operation mode. A first LED string is driven by a blue LED having peak emission wavelength of approximately 450 nm to approximately 455 nm, utilizes a recipient luminophoric medium, and generates a combined emission of a white color point with a 1931 CIE chromaticity diagram (ccx, ccy) coordinates of (0.3818, 0.3797). A second LED string is driven by a blue LED having peak emission wavelength of approximately 450 nm to approximately 455 nm, utilizes a recipient luminophoric medium, and generates a combined emission of a red color point with a 1931 CIE chromaticity diagram color point of (0.5932, 0.3903). A third LED string is driven by a blue LED having peak emission wavelength of approximately 450 nm to approximately 455 nm, utilizes a recipient luminophoric medium, and generates a combined emission of a cyan color point with a 1931 CIE chromaticity diagram color point of (0.373, 0.4978).
Tables 58 and 59 below shows the spectral power distributions for the red and cyan color points generated by the panel system of this Example, with spectral power shown within wavelength ranges in nanometers from 380 nm to 780 nm, with an arbitrary reference wavelength range selected for each color range and normalized to a value of 100.0. Table 60 shows color-rendering and bioactive performance characteristics of the device for a representative selection of white light color points near the Planckian locus.
Any of the systems of Examples 1-13 and 14-35 can be modified to further include an additional lighting channel, a LRNE channel, that can be controlled to selectively provide LRNE spectral energy in the visible long-red or non-visible near infrared wavelengths ranges described herein. In some implementations, the spectral power distribution of the LRNE channel can be substantially equal to the spectral power of Long-Red Phosphor 675 nm or Long-Red Phosphor 700 nm shown in Tables 61-63. In certain implementations, the LRNE channel can have a spectral power distribution substantially equal to that of Long-Red Channel A, Long-Red Channel B, or Exemplary Long-Red Channel Average shown in Tables 7-9. One or more of the other channels in the lighting systems can have intensity reduced or turned off entirely when the LRNE channel is activated. Control methods and hardware as described elsewhere herein can be used to control the timing and amount of LRNE spectral energy provided by the systems.
Those of ordinary skill in the art will appreciate that a variety of materials can be used in the manufacturing of the components in the devices and systems disclosed herein. Any suitable structure and/or material can be used for the various features described herein, and a skilled artisan will be able to select an appropriate structures and materials based on various considerations, including the intended use of the systems disclosed herein, the intended arena within which they will be used, and the equipment and/or accessories with which they are intended to be used, among other considerations. Conventional polymeric, metal-polymer composites, ceramics, and metal materials are suitable for use in the various components. Materials hereinafter discovered and/or developed that are determined to be suitable for use in the features and elements described herein would also be considered acceptable.
When ranges are used herein for physical properties, such as molecular weight, or chemical properties, such as chemical formulae, all combinations, and subcombinations of ranges for specific exemplar therein are intended to be included.
The disclosures of each patent, patent application, and publication cited or described in this document are hereby incorporated herein by reference, in its entirety.
Those of ordinary skill in the art will appreciate that numerous changes and modifications can be made to the exemplars of the disclosure and that such changes and modifications can be made without departing from the spirit of the disclosure. It is, therefore, intended that the appended claims cover all such equivalent variations as fall within the true spirit and scope of the disclosure.
This application claims the benefit of International Patent Application No. PCT/US2019/013379 filed Jan. 11, 2019, which claims the benefit of U.S. Provisional Patent Application No. 62/758,447 filed Nov. 9, 2018; International Patent Application No. PCT/US2019/013359 filed Jan. 11, 2019, which claims the benefit of U.S. Provisional Patent Application No. 62/757,672 filed Nov. 8, 2018; International Patent Application No. PCT/US2019/013356 filed Jan. 11, 2019, which claims the benefit of U.S. Provisional Patent Application No. 62/757,664 filed Nov. 8, 2018; U.S. patent application Ser. No. 16/393,660 filed Apr. 24, 2019, which is a Continuation of International Patent Application No. PCT/US2019/013380 filed Jan. 11, 2019, which claims the benefit of U.S. Provisional Patent Application No. 62/758,411 filed Nov. 9, 2018; and U.S. Provisional Patent Application No. 62/885,162 filed Aug. 9, 2019, the entire contents of which are incorporated by reference as if fully set forth herein.
| Number | Date | Country | |
|---|---|---|---|
| 62757664 | Nov 2018 | US | |
| 62757672 | Nov 2018 | US | |
| 62758411 | Nov 2018 | US | |
| 62758447 | Nov 2018 | US | |
| 62885162 | Aug 2019 | US |
| Number | Date | Country | |
|---|---|---|---|
| Parent | PCT/US2019/060642 | Nov 2019 | US |
| Child | 17316216 | US | |
| Parent | PCT/US19/13380 | Jan 2019 | US |
| Child | 16393660 | US | |
| Parent | PCT/US2019/013359 | Jan 2019 | US |
| Child | PCT/US2019/060642 | US |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 16393660 | Apr 2019 | US |
| Child | PCT/US2019/060642 | US | |
| Parent | PCT/US2019/013379 | Jan 2019 | US |
| Child | PCT/US2019/013359 | US | |
| Parent | PCT/US2019/013356 | Jan 2019 | US |
| Child | PCT/US2019/013379 | US |
