Patent Grant
12215854
The present application relates to lighting, and more particularly, to a multi-beam solid-state luminaire.
Traditionally lighting systems configured to achieve a multi-beam output have been implemented using multiple separate lighting fixtures, each having a different beam spread. These systems are generally complex and expensive. Known single fixture multi-beam lighting systems can be less expensive than a multi-fixture system but have not provided certain desirable lighting effects in a simple and cost-efficient configuration.
These and other features of the present embodiments will be understood better by reading the following detailed description, taken together with the figures herein described. The accompanying drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing.
In accordance with an embodiment of the present disclosure, there is disclosed a luminaire having a multi-beam output. In some embodiments, the multi-beam output may include an inner beam having an inner beamwidth associated with a first group of solid-state lamps and an outer beam having an outer beamwidth associated with a second group of solid-state lamps. The outer beamwidth may be wider than the inner beamwidth, and the inner and outer beams may have different associated colors to produce a decorative flame-like illumination pattern on the target surface, such as a wall, column, floor, ceiling, etc. An elongated central color and separate surrounding color produced in a luminaire consistent with the present disclosure can also be used to highlight objects such as statues or trees that have a central elongated element and surrounding detail, such as the trunk of a tree and its surrounding branches and foliage.
As shown particularly in the exploded view of
Although a specific mounting frame 104 for providing a knuckle mount configuration is illustrated herein, it is to be understood that a luminaire 100 consistent with the present disclosure can include any suitable mounting configuration for mounting the luminaire 100 in a fixed or adjustable manner to a ceiling, wall, floor, step, pavement, the ground or other suitable surface, to illuminate a target surface. In some embodiments, the mounting configuration may be a yoke-type configuration wherein a fixed portion of the mounting frame is a u-shaped yoke coupled to opposite sides of a pivoting portion. In some other embodiments, the disclosed luminaire 100 can be configured as a free-standing lighting device, such as a desk lamp or torchière lamp. In other embodiments, a luminaire 100 consistent with the present disclosure may not include any mounting frame 104 or other configuration for securing the luminaire to a fixed position. Numerous other suitable configurations will be apparent in light of this disclosure.
The lighting unit 102 includes solid-slate lamps, as described herein, for emitting a multi-beam light output from a front surface 116 of the lighting unit 102. In the illustrated example embodiment, the lighting unit 102 has a generally circular periphery and the receptacle 106 defines a generally circular opening 118 for receiving the lighting unit 102. The lighting unit 102 may be secured within the opening 118 of the receptacle 106, e.g., one or more fasteners or detents.
The housing 304 and the mounting frame 104 may be constructed from any of a wide variety of thermally conductive materials, such as: aluminum (Al); copper (Cu); brass; steel; composites and/or polymers (e.g., ceramics, plastics, etc.) doped with thermally conductive material; and/or a combination thereof. Other suitable materials from which the housing 304 and the mounting frame 104 may be constructed will depend on a given application and will be apparent in light of this disclosure. The housing 304 may thus act as a heat sink for the lighting unit 102a, whereby heat generated by the lighting unit 102a is transferred through the housing 304 to the mounting frame 104. In the illustrated example embodiment, the exterior surface of the housing 304 includes elongate crenellations or grooves therein to facilitate heat transfer between the housing 304 and the mounting frame 104 and to allow air circulation between the housing 304 and the mounting frame 104.
As shown in
A power supply/control interface cable 228 enters the housing 304 through a pass-through fitting 330 and is coupled to the drivers 316, 318 to provide electrical power to the drivers 316, 318, e.g., from a line source, and, optionally, to provide control signals to the drivers 316, 318. In some cases, the drivers 316, 318 may communicate with a system controller (not shown) utilizing a digital communications protocol, such as a digital multiplexer (DMX) interface, a Wi-Fi™ protocol, a digital addressable lighting interface (DALI) protocol, a ZigBee protocol, or any other suitable communications protocol, wired and/or wireless (e.g., radio-based or optical), as will be apparent in light of this disclosure.
The drivers 316, 318 may take known configurations for receiving input voltage and, optionally, control signals from the power supply/control interface cable 228 and providing an output to solid-state lamps of the lamp assembly 402 through the pass-through fittings 306, 308. In one embodiment, for example, the drivers 316, 318 may be known DMX drivers. In the illustrated example embodiment, the first driver 316 is coupled for driving a first group of the solid-state lamps and the second driver 318 is coupled for driving a second group of the solid-state lamps. Although two drivers 316, 318 for driving two separate groups of solid-state lamps are provided in the embodiment of
As shown in
The lamp assembly 402 is provided at the front of the housing 304. A front cavity 424 is defined at the front of the housing 304 for receiving at least a portion of the lamp assembly 402. The cavity extends from the interior wall 324 to a front surface 426 of the housing 304 and is generally circular in shape.
The gap pad 404 is disposed against the interior wall 324 and the rear surface of the PCBA 406 is positioned adjacent the front surface of the gap pad 404. The gap pad 404 thus enhances thermal conductivity, spaces, and electrically isolates the PCBA 406 and the components thereon from the interior wall 324 of the housing 304. As described herein, the PCBA 406 includes first and second pluralities of solid-state lamps 428 operatively mounted on a front surface thereof. The PCBA 406 includes conductive traces and/or wires to electrically couple the solid-state lamps 428 to appropriate electronics to drive the solid-state lamps for emitting a desired light output. The features and quantity/density of solid-state lamps 428 utilized in the lighting unit 102a may be customized, as desired to provide illumination for a given target application or end-use. Numerous suitable configurations will be apparent in light of this disclosure.
A given solid-state lamp 428 may include one or more solid-state emitters, either in a common package or separately packaged and clustered together. A given solid state lamp 428 may be any of a wide range of semiconductor light source devices, such as, for example: (1) a light-emitting diode (LED); (2) an organic light-emitting diode (OLED); (3) a polymer light-emitting diode (PLED); and/or (4) a combination of any one or more thereof. In some embodiments, a given solid-state emitter may be configured for emissions of a single correlated color temperature (CCT) (e.g., a white light-emitting semiconductor light source). In some other embodiments, however, a given solid-state emitter may be configured for color-tunable emissions. For instance, in some cases, a given solid-state emitter may be a multi-color (e.g., bi-color, tri-color, etc.) semiconductor light source configured for a combination of emissions, such as: (1) red-green-blue (RGB); (2) red-green-blue-amber (RGBA); (3) red-green-blue-white (RGBW); (4) dual-white; and/or (5) a combination of any one or more thereof. As used herein, the term “color” generally is used to refer to a property of radiation that is perceivable by an observer (though this usage is not intended to limit the scope of this term). Accordingly, the term “different colors” implies two different spectra with different wavelength components and/or bandwidths. In addition, “color” may be used to refer to white and non-white light, and where two white lights of varying CCT constitute being a different “color” than each other.
The optic holder 408 has a rear surface positioned in opposed facing relationship to the front surface of the PCBA 406. The optic holder 408 may be constructed from an electrically isolating material and defines a plurality of receptacles 430 therein for receiving associated ones of the plurality of beam forming optics 410. The receptacles 430 may have a shape and dimension corresponding to the shape and dimensions of the beam forming optics 410. For generally conically shaped beam forming optics 410, e.g., as shown in
In some embodiments, each of the beam forming optics 410 may be configured to concentrate, e.g., collimate, light emitted from an associated one of the solid-state lamps and emit a concentrated light output from a top surface thereof. In some embodiments, the one or more of the beam forming optics 410 may be configured to emit light having a desired beamwidth. For example, the output beamwidth of the beam forming optics 410 associated with a first group of solid-state lamps may be different from the output beamwidth of the beam forming optics associated with a second group of solid-state lamps to provide a decorative flame-like light output for the luminaire, as described herein.
The beam forming optics 410 may include an reflective material, such as a reflective metal, and/or an optical structure comprising any of a wide variety of transparent/translucent materials, such as, for example: a polymer, such as poly(methyl methacrylate) (PMMA) or polycarbonate; a ceramic, such as sapphire (Al2O3) or yttrium aluminum garnet (YAG); a glass; and/or any combination thereof. Numerous suitable configurations of the beam forming optics 410 will be apparent in light of the present disclosure. The beam forming optics 410 may perform beam forming by optical reflection, refraction, total internal reflection (TIR), or any combination thereof.
A cavity 610 is defined by the bottom surface 602 of the beam forming optic 410. The cavity 610 is sized and shaped to receive a top portion of an associated one of the solid-state lamps 428, as shown for example in
Turning again to
In some embodiments, the beamwidth lenses 412, 414 may be configured to emit light having different associated beamwidths. For example, the light emitted by the first beamwidth lens 412 may have a first beamwidth and the light emitted by the second beamwidth lens 414 may have a second beamwidth that is larger than the first beamwidth to provide a decorative flame-like light output for the luminaire, as described herein. In embodiments, where the beam forming optics 410 are configured to provide the desired associated output beamwidths one or both of the beamwidth lenses 412, 414 may be omitted from the lamp assembly 402.
The beamwidth lenses 412, 414 may each include an optical structure comprising any of a wide variety of transparent/translucent materials, such as, for example: a polymer, such as poly(methyl methacrylate) (PMMA) or polycarbonate; a ceramic, such as sapphire (Al2O3) or yttrium aluminum garnet (YAG); a glass; and/or any combination thereof. The beam width lenses 412, 414 may broaden or otherwise diffuse light passing therethrough, e.g., via macro or micro geometry on their surfaces and/or scattering structures within their volume. In some embodiments, the beamwidth lenses 412, 414 may be in the form of a thin sheet or film. Numerous suitable configurations of the beamwidth lenses will be apparent in light of the present disclosure.
In the illustrated example embodiment, the beamwidth lenses 412, 414 are formed as films having a thickness of about 0.010 inches and are positioned to be generally co-planar top surfaces. The shape of the first beamwidth lens 412 generally corresponds to the shape associated with the first group of beam forming optic 410 over which the first beamwidth lens 412 is positioned, whereby light emitted from the each of the first group of beam forming optics 410 passes through the first beamwidth lens 412. The shape of the second beamwidth lens 414 generally corresponds to the shape associated with the second group of beam forming optic 410 over which the second beamwidth lens 414 is positioned, whereby light emitted from the each of the second group of beam forming optics 410 passes through the second beamwidth lens 414.
The first 412 and second 414 beamwidth lenses are shown more particularly in
Although example embodiments may be described herein as including a single beamwidth lens positioned over all of the beam forming optics of an associated group of beam forming optics, it is to be understood that any number of beamwidth lenses may be provided in a luminaire consistent with the present disclosure. For example, each of the beam forming optics may have a different associated beamwidth lens positioned thereover. In some embodiments, a single beamwidth lens may be positioned over a subset of a group of beam forming optics and one or more remaining ones of the group may have different associated beamwidth lenses positioned thereover. Numerous configurations of the beamwidth lenses and are possible in a luminaire consistent with the present disclosure.
Turning again to
The sealing lens 418 is positioned over the optic retainer 416 and an annular gasket 420 is positioned over the sealing lens 418. The sealing lens 418 may be an optical structure comprising any of a wide variety of transparent/translucent materials, such as, for example: a polymer, such as poly(methyl methacrylate) (PMMA) or polycarbonate; a ceramic, such as sapphire (Al2O3) or yttrium aluminum garnet (YAG); a glass; and/or any combination thereof. In some embodiments, sealing lens 418 may have optical properties for emitting light having a desired optical property. For example, in some embodiments the sealing lens 418 may be configured as a diffuser. In other embodiments, the sealing lens 418 may be configured to alter light imparted thereon or provide a light output having a desired beamwidth. Numerous suitable configurations of the sealing lens 418 will be apparent in light of the present disclosure.
The retainer 422 is positioned over the gasket 420 and is secured to the top surface of the housing 304, e.g., by appropriate fasteners. Light emitted from an aperture 432 of the optic retainer 416 passes through the sealing lens 418 to provide the output light of the luminaire 100.
In some embodiments, a total number of solid-state lamps 428 configured for emitting light from the luminaire may be equal to the total number of solid-state lamps in the first group plus the total number of solid-state lamps in the second group. For example, in the illustrated example embodiment, a total of 7 solid-state lamps 428 are mounted to the PCB and there are 3 solid-state lamps 428-1, 428-2, 424-3 in the first group of solid-state lamps and 4 solid-state lamps in the second group 428-4, 428-5, 424-6, 428-7 of solid-state lamps. The ratio of the number of solid-state lamps 428 in the first group to the number of solid-state lamps in the second group is thus 0.75 when the total number of solid-state lamps 428 in the first group (i.e., 3) plus the number of solid-state lamps 428 in the second group (i.e., 4) is equal to the total number of solid-state lamps 428 provided in the luminaire (i.e., 7).
Although a specific number of solid-state lamps 428 is shown, a system consistent with the present disclosure may include any number of solid-state lamps 428 and any number and any number of solid-state lamps 428 may be included in the first group and the second group. Also, numerous ratios of the number of solid-state lamps 428 in the first group to the number of solid-state lamps 428 in the second group are possible. In some embodiments, the ratio of the number of solid-state lamps 428 in the first group to the number of solid-state lamps 428 in the second group is greater than or equal to 0.6 and less than or equal to 1.2 when the number of solid-state lamps 428 in the first group plus the number of solid-state lamps 428 in the second group is equal to the total number of solid-state lamps 428 provided in the luminaire.
The solid-state lamps 428-1, 428-2, 424-3 in the first group of solid-state lamps may be configured to emit light of a different color than the light emitted by the solid-state lamps 428-4, 428-5, 424-6, 428-7 of the second group. In some embodiments, for example, all of the plurality of solid-state lamps 428 may be of the same type, e.g., RGB LEDs, but controlled so that the solid-state lamps 428-1, 428-2, 424-3 of the first group emit a different color than the solid-state lamps 428-4, 428-5, 424-6, 428-7 of the second group. In other embodiments, the solid-state lamps 428 of the first and second groups may be single color lamps of different colors. Numerous configurations of the solid-state lamps 428 for achieving different color outputs from the first group 428-1, 428-2, 424-3 of solid-state lamps and the second group 428-4, 428-5, 424-6. 424-7 solid-state lamps are possible.
The pattern in which the beam forming optics 410 are arranged has a center C, e.g., at the center of the solid-state lamp 428-3 and the beam forming optic 410-3. The first group of beam forming optics includes center beam forming optic 410-3, that is arranged at the center C of the pattern. The phrase “at the center” as used herein with respect to the location of a single center beam forming optic 410 with respect to pattern in which the beam forming optics 410 are arranged means the single center beam forming lens, e.g., beam forming optic 410-3, overlies the center C of the pattern and does not require that the center of the center beam forming optic be precisely aligned with the center C of the pattern.
In the illustrated embodiment, the beam forming optics 410 may be considered as being arranged in a circular, hexagonal or other 2-dimensional pattern (in a plan view) where all of the beam forming optics 410-1, 410-2 . . . 410-7 are within the internal area defined by the circle, hexagon or other pattern and the center beam forming optic 410-3 is arranged at the center C of the circle, hexagon or other pattern. For example, the beam forming optics in
Each of the second group 410-4, 410-5, 410-6, 410-7 of beam forming optics is further from the center C of the pattern than the center beam forming optic 410-3. In some embodiments, with respect to an imaginary line L4 horizontally bisecting the pattern and extending through the center C of the pattern, there are more complete beam forming optics 410 of the first group of beam forming optics than of the second group of beam forming optics on one side of the line and, on the other side of the line, there are more complete beam forming optics 410 of the second group of beam forming optics than of the first group of beam forming optics. In
In some embodiments, the first group beam 410-1, 410-2, 410-3 beam forming optics is arranged in a first shape and the second group 410-4, 410-5, 410-6, 410-7 of beam forming optics is arranged in a second shape. The second shape may define a central opening and wherein at least a portion of the first shape extends into the central opening. In
In some embodiments, the maximum width of the first group of beam forming optics 410 is less than the maximum width of the second group of beam forming optics 410. The “maximum width” of a group of beam forming optics 410 as used herein means the maximum Euclidean distance between the left-most point on the left-most one of beam forming optics 410 of a group and the right-most point on the right-most one of the beam forming optics 410 of a group. In
A lighting unit consistent with the present disclosure may be provided in numerous configurations in view of the present disclosure.
The illustrated example embodiment 102b, however, includes first 406a and second 406b PCBAs as opposed to the single PCBA 406 shown in
In the illustrated embodiment, the first PCBA 406a has a perimeter 1304 defining a projection 1306, and the second PCBA 406b has a permitter 1308 defining a central opening 1310. The projection 1306 of the first PCBA 406a may be configured to be received in the central opening 1310 of the second PCBA 406b. As shown, the portion of the perimeter 1304 of the first PCBA 406a defining the projection 1306 may be complementary to the portion of the perimeter 1308 of the second PCBA 406b defining the central opening 1310. In this example configuration surfaces defining the perimeter of the projection 1306 are in opposed facing relationship to corresponding surfaces defining the perimeter of the central opening 1310.
As described in connection with
The shape of the first beamwidth lens 412a generally corresponds to the shape associated with the first group of beam forming optics 410 over which the first beamwidth lens 412a is positioned, whereby light emitted from the each of the first group of beam forming optics 410 passes through the first beamwidth lens 412a. The shape of the second beamwidth lens 414a generally corresponds to the shape associated with the second group of beam forming optics 410 over which the second beamwidth lens is positioned 414a, whereby light emitted from the each of the second group of beam forming optics 410 passes through the second beamwidth lens 414a.
The first 412a and second 414a beamwidth lenses are shown more particularly in
Turning again to
The sealing the lens 418a is positioned over the optic retainer 416a, and the annular gasket 420a is positioned over the sealing lens 418a. The sealing lens 418a may be an optical structure comprising any of a wide variety of transparent/translucent materials, such as, for example: a polymer, such as poly(methyl methacrylate) (PMMA) or polycarbonate; a ceramic, such as sapphire (Al2O3) or yttrium aluminum garnet (YAG); a glass; and/or any combination thereof. In some embodiments, the sealing lens 418a may have optical properties for emitting light having a desired optical property. For example, in some embodiments the sealing lens 418a may be configured as a diffuser. In other embodiments, the sealing lens 418a may be configured to alter light imparted thereon or provide a light output having a desired beamwidth. Numerous suitable configurations of the sealing lens 418a will be apparent in light of the present disclosure.
The retainer 422a is positioned over the gasket 420a and is secured to the top surface of the housing 304a. e.g., by appropriate fasteners. Light emitted through the optic retainer 416a passes through the sealing lens 418a to provide the output light of the luminaire.
The pattern in which the beam forming optics 410 are arranged has a center C. The first group of beam forming optics includes center group of beam forming optic including optics 410-1, 410-2, 410-3 and 410-4 arranged around a central area indicated by the circular dashed line L8. The central area is arranged at the center C of the pattern in which the beam forming optics 410 are arranged. There are no beam forming optics in the central area. The phrase “at the center” as used herein with respect to the location of a group of center beam forming optic with respect to pattern in which all the beam forming optics are arranged means the central area around which the group of center beam forming optics are arranged overlies the center of the pattern and does not require that the center of the central area be precisely aligned with the center of the pattern.
In the illustrated embodiment, the beam forming optics 410 may be considered as being arranged in a circular, hexagonal or other 2-dimensional pattern (in a plan view) where all of the beam forming optics 410 are within the internal area defined by the circle, hexagon or other pattern and the center group 410-1, 410-2, 410-3 and 410-4 of beam forming optics is arranged at the center C of the circle, hexagon or other pattern. For example, the beam forming optics in
Each of the second group of beam forming optics, i.e., the beam forming optics within the area defined by line L6 in the illustrated example, is further from the center C of the pattern than each of the center group 410-1, 410-2, 410-3 and 410-4 of beam forming optics. In some embodiments, with respect to an imaginary line L9 horizontally bisecting the pattern and extending through the center C of the pattern, there are more complete beam forming optics 410 of the first group of beam forming optics than of the second group of beam forming optics on one side of the line and, on the other side of the line, there are more complete beam forming optics 410 of the second group of beam forming optics than of the first group of beam forming optics.
In some embodiments, the first group beam forming optics 410 is arranged in a first shape and the second the second group of beam forming optics 410 is arranged in a second shape. The second shape may define central opening and at least a portion of the first shape extends into the central opening. In
In
The pattern in which the beam forming optics 410 are arranged has a center C. The first group of beam forming optics includes a center group of beam forming optic including optics 410-1, 410-2, 410-3 and 410-4 arranged around a central area indicated by the circular dashed line L12. The central area is arranged at the center C of the pattern in which the beam forming optics 410 are arranged. There are no beam forming optics in the central area.
In the illustrated embodiment, the beam forming optics 410 may be considered as being arranged in a circular, hexagonal or other 2-dimensional pattern (in a plan view) where all of the beam forming optics 410 are within the internal area defined by the circle, hexagon or other pattern and the center group 410-1, 410-2, 410-3 and 410-4 of beam forming optics is arranged at the center C of the circle, hexagon or other pattern. For example, the beam forming optics in
Each of the second group of beam forming optics, i.e., the beam forming optics within the area defined by line L11 in the illustrated example, is further from the center C of the pattern than each of the center group 410-1, 410-2, 410-3 and 410-4 of beam forming optics. In some embodiments, with respect to an imaginary line L14 horizontally bisecting the pattern and extending through the center C of the pattern, there are more complete beam forming optics 410 of the first group of beam forming optics than of the second group of beam forming optics on one side of the line and, on the other side of the line, there are more complete beam forming optics 410 of the second group of beam forming optics than of the first group of beam forming optics.
In some embodiments, the first group beam forming optics 410 is arranged in a first shape and the second the second group of beam forming optics 410 is arranged in a second shape. The second shape may define central opening and at least a portion of the first shape extends into the central opening. In
In
In some embodiments, the beamwidth lenses 412, 414, 412a, 414a, 412b, 414b in a luminaire consistent with the present disclosure may include optical properties selected to produce different associated output beamwidths for the luminaire. Light emitted from the first group of beam forming optics 410 may pass through the first beamwidth lens 412, 412a, 412b and be emitted from the first beamwidth lens 412, 412a, 412b within a first desired beamwidth. Light emitted from the second group of beam forming optics 410 may pass through the second beamwidth lens 414, 414a, 414b and be emitted from the second beamwidth lens 414, 414a, 414b within a second desired beamwidth. Advantageously, use of the beamwidth lenses 412, 414, 412a, 414a, 412b, 414b to achieve a desired output beamwidths for the luminaire allows for facile adjustment of the output beamwidths by selective replacement of the beamwidth lenses 412, 414, 412a, 414a, 412b, 414b. In some embodiments, however, the beamwidth lenses 412, 414, 412a, 414a, 412b, 414b may be omitted and the output beamwidth of the first and second output beams may be established by the beam forming optics and/or other optical element(s) in the luminaire.
Numerous combinations of output beamwidths may be provided in a luminaire consistent with the present disclosure by selection of the optical properties of the beamwidth lenses 412, 414, 412a, 414a, 412b, 414b, the beam forming optics 410 and/or other optical elements. In
Numerous embodiments will be apparent in light of this disclosure. One example embodiment provides a luminaire including: a housing; a first group of solid-state lamps disposed in the housing, each of the first group of solid-state lamps being configured to emit light having a first color; a first group of beam forming optics, each of the first group of beam forming optics being positioned over an associated one of the first group of solid-state lamps; a second group of solid-state lamps disposed in the housing, each of the second group of solid-state lamps being configured to emit light having a second color, the second color being different from the first color; and a second group of beam forming optics, each of the second group of beam forming optics being positioned over an associated one of the second group of solid-state lamps. The first group beam forming optics and the second group of beam forming optics may be arranged in a pattern having a center. The first group of beam forming optics includes one or more center beam forming optics arranged at the center, whereby each of the second group of beam forming optics is further from the center than the one or more center beam forming optics.
Another example embodiment provides a method of making a luminaire including: providing a housing; disposing a first group of solid-state lamps in the housing, each of the first group of solid-state lamps being configured to emit light having a first color; positioning a first group of beam forming optics in the housing, each of the first group of beam forming optics being positioned over an associated one of the first group of solid-state lamps; disposing a second group of solid-state lamps in the housing, each of the second group of solid-state lamps being configured to emit light having a second color, the second color being different from the first color; and positioning a second group of beam forming optics in the housing, each of the second group of beam forming optics being positioned over an associated one of the second group of solid-state lamps. The first group beam forming optics and the second group of beam forming optics may be positioned in a pattern having a center. The first group of beam forming optics includes one or more center beam forming optics arranged at the center whereby each of the second group of beam forming optics is further from the center than the one or more center beam forming optics.
Another example embodiment provides a luminaire including: a housing; one or more printed circuit boards dispose in the housing; a first group of solid-state lamps disposed on the one or more printed circuit boards, each of the first group of solid-state lamps being configured to emit light having a first color; a first group of beam forming optics, each of the first group of beam forming optics being positioned over an associated one of the first group of solid-state lamps; a second group of solid-state lamps disposed on the one or more printed circuit boards, each of the second group of solid-state lamps being configured to emit light having a second color, the second color being different from the first color; a second group of beam forming optics, each of the second group of beam forming optics being positioned over an associated one of the second group of solid-state lamps; a first beamwidth lens positioned over each of the first group of beam forming optics, the first beamwidth lens being configured to receive light from the first group of beam forming optics to provide a composite light output having a first beamwidth; and a second beamwidth lens positioned over each of the second group of beam forming optics, the second beamwidth lens being configured to receive light from the second group of beam forming optics to provide a composite light output having a second beamwidth, the second beamwidth being nominally different from the first beamwidth. The first group beam forming optics and the second group of beam forming optics may be arranged in a pattern having a center. The first group of beam forming optics includes one or more center beam forming optics arranged at the center, whereby each of the second group of beam forming optics is further from the center than the one or more center beam forming optics. A ratio of a total number of the first group of solid-state lamps disposed in the housing to a total number of the second group of solid-state lamps disposed in the housing may be greater than or equal to 0.6 and less than or equal to 1.2 when the number of solid-state lamps in the first group plus the number of solid-state lamps in the second group is equal to a total number of solid-state lamps provided in the luminaire. A maximum width of the first group of beam forming optics is less than a maximum width of the second group of beam forming optics. With respect to a line horizontally bisecting the pattern an extending through the center, there are more complete beamwidth lenses of the first group compared to complete beamwidth lenses of the second group on one side of the line and there are more complete beamwidth lenses of the second group compared to complete beamwidth lenses of the first group on an opposite side of the line.
Another example embodiment provides a luminaire including: a housing; a first group of solid-state lamps disposed in the housing, each of the first group of solid-state lamps being configured to emit light having a first color; a first group of beam forming optics, each of the first group of beam forming optics being positioned over an associated one of the first group of solid-state lamps; a first beamwidth lens positioned over each of the first group of beam forming optics, the first beamwidth lens being configured to receive light from the first group of beam forming optics to provide a composite light output having a first beamwidth; a second group of solid-state lamps disposed in the housing, each of the second group of solid-state lamps being configured to emit light having a second color, the second color being different from the first color; a second group of beam forming optics, each of the second group of beam forming optics being positioned over an associated one of the second group of solid-state lamps; and a second beamwidth lens positioned over each of the second group of beam forming optics, the second beamwidth lens being configured to receive light from the second group of beam forming optics to provide a composite light output having a second beamwidth, the second beamwidth being nominally different from the first beamwidth.
Another example embodiment provides a method of making a luminaire including: providing a housing; disposing a first group of solid-state lamps in the housing, each of the first group of solid-state lamps being configured to emit light having a first color; positioning a first group of beam forming optics in the housing, each of the first group of beam forming optics being positioned over an associated one of the first group of solid-state lamps; positioning a first beamwidth lens over each of the first group of beam forming optics, the first beamwidth lens being configured to receive light from the first group of beam forming optics to provide a composite light output having a first beamwidth; disposing a second group of solid-state lamps in the housing, each of the second group of solid-state lamps being configured to emit light having a second color, the second color being different from the first color; positioning a second group of beam forming optics in the housing, each of the second group of beam forming optics being positioned over an associated one of the second group of solid-state lamps; and positioning a second beamwidth lens over each of the second group of beam forming optics, the second beamwidth lens being configured to receive light from the second group of beam forming optics to provide a composite light output having a second beamwidth.
The foregoing description of example embodiments has been presented for the purposes of illustration and description. It is not intended to be exhaustive or to limit the present disclosure to the precise forms disclosed. Many modifications and variations are possible in light of this disclosure. It is intended that the scope of the present disclosure be limited not by this detailed description, but rather by the claims appended hereto. Future-filed applications claiming priority to this application may claim the disclosed subject matter in a different manner and generally may include any set of one or more limitations as variously disclosed or otherwise demonstrated herein.
It is, therefore, to be understood that the foregoing embodiments are presented by way of example only and that, within the scope of the appended claims and equivalents thereto, the invention may be practiced otherwise than as specifically described and claimed. The present invention is directed to each individual feature, embodiment, system, article, material, kit, and/or method described herein. In addition, any combination of two or more such features, embodiments, systems, articles, materials, kits, and/or methods, if such features, systems, articles, materials, kits, and/or methods are not mutually inconsistent, is included within the scope of the present invention.
The phrase “and/or,” as used herein in the specification and in the claims, should be understood to mean “either or both” of the elements so conjoined, i.e., elements that are conjunctively present in some cases and disjunctively present in other cases. Other elements may optionally be present other than the elements specifically identified by the “and/or” clause, whether related or unrelated to those elements specifically identified, unless clearly indicated to the contrary.
The term “coupled” as used herein refers to any connection, coupling, link or the like by which signals carried by one system element are imparted to the “coupled” element. Such “coupled” devices, or signals and devices, are not necessarily directly connected to one another and may be separated by intermediate components or devices that may manipulate or modify such signals. Likewise, the terms “connected” or “coupled” as used herein in regard to mechanical or physical connections or couplings is a relative term and does not require a direct physical connection.
Elements, components, modules, and/or parts thereof that are described and/or otherwise portrayed through the figures to communicate with, be associated with, and/or be based on, something else, may be understood to so communicate, be associated with, and/or be based on in a direct and/or indirect manner, unless otherwise stipulated herein.
Unless otherwise stated, use of the word “substantially” may be construed to include a precise relationship, condition, arrangement, orientation, and/or other characteristic, and deviations thereof as understood by one of ordinary skill in the art, to the extent that such deviations do not materially affect the disclosed methods and systems. Throughout the entirety of the present disclosure, use of the articles “a” and/or “an” and/or “the” to modify a noun may be understood to be used for convenience and to include one, or more than one, of the modified noun, unless otherwise specifically stated. The terms “comprising”, “including” and “having” are intended to be inclusive and mean that there may be additional elements other than the listed elements.
As used herein, use of the term “nominal” or “nominally” when referring to an amount means a designated or theoretical amount that may vary from the actual amount.
Spatially relative terms, such as “beneath,” below,” upper,” “lower,” “above”, “left”, “right” and the like may be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the drawings. These spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the drawings. For example, if the device in the drawings is turned over, elements described as “below” or “beneath” other elements or features would then be oriented “above” the other elements or features. Thus, the exemplary term “below” may encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Although the terms “first,” “second.” “third” etc. may be used to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections are not to be limited by these terms as they are used only to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section could be termed a second element, component, region, layer or section without departing from the scope and teachings of the present invention.
Although the methods and systems have been described relative to a specific embodiment thereof, they are not so limited. Obviously, many modifications and variations may become apparent in light of the above teachings. Many additional changes in the details, materials, and arrangement of parts, herein described and illustrated, may be made by those skilled in the art.
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| WO 2015049704 | Apr 2015 | WO |
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| 20240240773 A1 | Jul 2024 | US |
