Patent Grant
9933137
This application claims priority to DK Application No. PA 2014 70541 filed 4 Sep. 2014, the disclosure of which is hereby incorporated in its entirety by reference herein.
The present invention relates to a projecting light fixture where an optical gate is illuminated by a light source module and where a projecting system is configured to project the light passing through the optical gate along a primary optical axis. A beam shaping object is arranged near the optical gate and is configured to modify the light beam.
In order to create various light effects and mood lighting in connection with concerts, live shows, TV shows, sport events or as a part of an architectural installation light fixtures creating various light effects are getting more and more used in the entertainment industry. Typically, entertainment light fixtures create a light beam having a beam width and a divergence and can for instance be wash/flood light fixtures creating a relatively wide light beam or it can be projecting fixtures configured to projecting images onto a target surface.
Projecting light fixtures comprises an optical gate illuminated by a light source module and an optical projecting system is configured to collect light passing through the optical gate along a primary optical axis. A beam shaping object is often arranged at the optical gate and is used to shape the light beam. The beam shaping object can be used to create midair effects (visible due to light scattering in/on smoke/haze in the air) where the shape of the light beam in midair is defined by the beam shaping object and/or the beam shaping object can create a light pattern which is projected to and imaged on a target surface. The beam shaping object can be any object capable of the modifying the light beam and can for instance be GOBOs, Animation wheels, frost filters, color filters, prisms, framing blades, iris, textured glass, etc. The beam shaping objects can be used as static objects arranged in the light beam and/or as movable objects which are moved in relation to the light beam in order to create a dynamic light effect. Additionally, it is known to use a digital imaging device such as DMDs, LCDs or the like as beam shaping objects whereby the projected light beam can be used as a digital projector, for instance in order to project graphical images and/video signals.
Light designers and programmers want as many effects as possible in a lighting apparatus as this gives the light designer and programmers many options when creating light shows. However, it is difficult to provide lighting apparatus with many effects as each kind of the light effect components take up space in the lighting apparatus. Especially, it is difficult to provide many light effects in projecting light devices as the light forming element need to be positioned in a focal point (the optical gate) of the optical system, and typical optical systems are only capable of focusing in a very limited area. At the same time, it is also desired to have light and compact light fixtures as these are easier to handle. Additionally, light designers and programmers also want new light effects which can be used to create light shows.
The objective of the present invention is to provide a compact projecting light fixture capable of creating new light effects. This can be achieved by a projecting light fixture as defined by the independent claims. The benefits and advantages of the present invention are disclosed in the detailed description of the drawings illustrating the invention. The dependent claims define different embodiments of the invention.
The present invention is described in view of exemplary embodiments only intended to illustrate the principles of the present invention. The skilled person will be able to provide several embodiments within the scope of the claims. In the illustrated embodiments the illustrated light beams and optical components do only serve to illustrate the principles of the invention rather than illustrating exact and precise light beams and optical components. Throughout the description the reference numbers of similar elements providing similar effects have been given the same last two digits.
The light source module 105 comprises a plurality of light sources 109a, 109b and a plurality of light collectors 111a, 111b. Each light collector is configured to collect light from at least one of the light sources and convert the collected light into a source light beam 113a, 113b and the source light beam propagate along a primary optical axis 115 (illustrated in dashed dotted line). As a consequence a plurality of source light beams are created and propagate along the primary optical axis 115.
The plurality of light sources and the plurality of light collectors are arranged in a first group and in a second group, where each group comprises at least one light source and at least one light collector. Each group provides thus at least one source light beam. In the illustrated embodiment the first group comprises at least one first light source 109a and at least one first light collector 111a, where the first light collector 111a collects light from the first light source 109a and converts the collected light into a first source light beam 113a (illustrated in dashed lines). The first source light beam propagates along the primary optical axis and provides a first illumination of the optical gate. That the first source light beam provides a first illumination of the optical gate means that the first source light beam propagates through at least a part of the optical gate.
Similar the second group comprises at least one second light source 109b and at least one second light collector 111b, where the second light collector 111b collects light from the second light source 109b and converts the collected light into a second source light beam 113b (illustrated in dotted lines). The second source light beam 113b propagates along the primary optical axis and provides a second illumination of the optical gate. The second source light beam 113b provides a second illumination of the optical gate means that the second source light beam 113b propagates through at least a part of the optical gate.
In the illustrated embodiment, each of the first and the second groups comprise one light source and one light collector collecting light from the light source. However, as shown in the later figures, it is to be understood that each group can comprise any positive number of light sources and any positive number of light collectors. Additionally, it is to be understood that each light collector can be configured to collect light from any positive number of light sources and the light collector can thus be adapted to collect light from a single light source or a plurality of light sources.
In the illustrated embodiment, the first and second light sources are LEDs (Light emitting diodes), however the skilled person realizes that any kind of controllable light sources can be used, such as OLED (organic light emitting diodes), PLED (polymer light emitting diodes), discharge lamps, incandescent lamps, plasma lamps.
The projecting light fixture 101 comprises a controller 117 configured to control the first light source (or group of light sources) and the second light source (or group of light sources) individually. The controller comprises a processor 119 and a memory 121. The processor 119 is configured to control the first group of light sources 109a and the second group of light sources 109b, respectively, through communication lines 123a and 123b. The processor 119 can thus control one of the groups of light sources without controlling the other group of light sources. The processor 119 can for instance be adapted to control the color and/or intensity of the light sources and can be based on any type of communication signals known in the art of lightning, e.g., PWM, AM, FM, binary signals, etc. The first and second group of light sources 109a, 109b, respectively, can thus be controlled individually and independently and can thus be treated as two individually and independently groups of light sources. It is to be understood that the individually light sources of each groups can be controlled by the same control signal, supplied with individual control signals and/or grouped in sub-groups where each subgroup receive the same control signal. The communication lines 123a and 123b are illustrated as individual communication lines to the first group and to the second group where the controller 117 is configured to generate the activation signal for each light source. However, the skilled person will be able to provide many kinds of communication means between the controller and the light sources for instance by providing a driver which generates the activation signals for the light sources based on a control signal from the controller. Both groups of light sources can be connected to the same data bus and controlled by the controller through a data bus using addressing. In embodiments where the first group and/or the second group comprises a plurality of light sources, it is to be understood that the light sources of each group can be controlled based on the same control signal from the controller or controlled by the same driver.
The controller 117 can be adapted to control the first group and the second group based on respectively a first light source control parameter and a second light source control parameter. The first light source control parameter and the second light source control parameter are indicative of at least one parameter defining how the first group and the second group should be controlled. The light source parameter can for instance be indicative of intensity/dimming of the light source, the storing frequency etc.
The controller 117 can obtain the first and second light source parameters from the memory 121 in form of a preprogrammed pattern/light show. In one embodiment the controller is configured to receive the first light source parameter and the second light source parameter from an input signal 125 received from an external source. The input signal 125 can be any signal capable of communication of parameters and can for instance be based on one of the following protocols USITT DMX 512, USITT DMX 512 1990, USITT DMX 512-A, DMX-512-A including RDM as covered by ANSI E1.11 and ANSI E1.20 standards, Wireless DMX, Artnet or ACN designates Architecture for Control Networks; ANSI E1.17, E1.31. The light source control parameters can also be generated from user input means either implemented as a part of the projecting light fixture or implemented on an external controller which sends the light source control parameter to the projecting light fixture through an input signal.
The first illumination provided by the first group and the second illumination provided by the second group are different. For instance in that the first and second source light beams have different angles in relation to the primary optical axes at the optical gate, that the first source light beams and second source light beams illuminates different areas at the optical gate, that the first and second source light beams provides different light distributions at the optical gate.
By arranging the light sources into a first group and a second group which illuminate the optical gate differently and at the same time providing a controller capable of controlling the first and second group individually makes it possible to provide a large number of light effects. The light effects are provided by controlling the first group and the second group individually and thereby also control the illumination of the beam shaping object, as different illumination of the beam shaping object results in different light patterns being projected by the projecting system. As a consequence, different light patterns can be provided by controlling which group of light sources that are illuminating the optical gate. For instance, when illuminating the beam shaping object using the first group a first light pattern is created and when illuminating the beam shaping object using the second group, a second light pattern is created. Additionally, a combination of the first light pattern and the second light pattern can be provided by illuminating the beam shaping object using both the first group and the second group. A large number of combinations of the first light patterns and the second light patterns can be provided by varying the intensity of the first group and the second group in relation to each other. In an embodiment where the first group and/or second group comprises color tunable light sources (e.g., RGB 3 in LEDs or RGBW 4 in one LEDs), the combination of the first light pattern and the second light pattern can also be provided by controlling the color of the first group and the color of the second group in relation to each other. As will be described in connection with other embodiments, the light effects can also be provided in combination with other light modifying components which are configured to modify the light beam, such as prism effects, zoom/focus, animation wheels, color filters, iris, framing modules etc. The intensity of the different illuminations can be varied in relation to each other by controlling the intensity of the first light source and the second light sources in relation to each other, for instance, by alternately turning the first light source and the second light source on and off, by varying the intensity of the first and second light source using various of intensity functions e.g. sine functions, predefined dimming patterns, sawtooth functions, random functions etc.
The first illumination and the second illumination can be different in that the angle between the primary optical axis and the at least one first source light beam and the angle between the primary optical axes and the at least one second source light beam are different. This result in the fact that the first light beam pattern created by the first group and beam shaping object and the second light beam pattern created by the second group and beam shaping object will be displaced in relation to each other when exiting the projecting light fixture. For instance, if the projecting system images a gobo arranged near the optical gate at a target surface results in the fact that the image created using the first group and the image created using the second group are offset each other at the target surface. It is noticed that the images may partially overlap. In one embodiment where the first group and the second group comprises a plurality of light sources and light collectors and each group provides a plurality of source light beams, it is possible that some of the first source light beams and some of the second light source beams has the same angle in relation to the primary optical axis. As a consequence, it is to be understood that the first illumination and the second illumination may differ if only one of the first light source beams has an angle in relation to the primary axis which is different from the second source light beams angles in relation to the primary optical axis.
In one embodiment, the first group and the second group have been arranged such that the angle between the primary optical axis and the first source light beam is smaller than a lower angle limit and such that the angle between the primary optical axis and the second source light beam is larger than the lower angle limit. This can be achieved by arranging the first group closer to the primary optical axis in relation the second group. Variations of such embodiments are shown in
The first illumination and the second illumination can be different in that at least one of the first light source beam and at least one of the second light source beams illuminates different areas of the optical gate. This result in the fact that the illumination of different parts of the optical gate can be provided and it is thus possible to control which part of the beam shaping object that are illuminated. For instance, if the projecting system images a gobo arranged near the optical gate at a target surface different part of the image can be controlled by controlling the first group and the second group in relation to each other. This can for instance be used to provide light effects with dynamic change of different part of the image.
The first illumination and the second illumination can be different in that a first light distribution provided by the at least one first source light beam at the beam shaping object and a second light distribution provided by the at least one second source light beam at the beam shaping object are different. The first light distribution at the beam shaping object provided by the at least one first source light beam(s) defines the light density across the beam shaping object meaning the light intensity across the beam shaping object. Similar second light distribution at the beam shaping object provided by the at least one second source light beam(s) defines the light density across the beam shaping object meaning the light intensity across the optical gate.
The projecting light fixture 201 are similar to the projecting light fixture 101 illustrated in
Like the light source module 103 of
The at least one source light beams of each group propagate along the primary optical axis and provides an illumination of the beam shaping device near the optical gate. The plurality of the light sources and light collectors are configured such that the seven illuminations of the optical gate are different. The seven illuminations can differ from each other in way as described in connection with
In
The projecting system 105 is configured to collect light modified by the beam shaping object 106 and project the light along the primary optical axis 115. In this embodiment, the projecting system comprises an optical zoom group 227 and an optical focus group 229.
The optical zoom group 227 comprises at least one optical component which is movable along the primary optical axis in order to adjust the divergence and/or width of the light beam. The controller 117 is further configured to control the position of the optical zoom group along the primary optical axis through communication line 131. For instance, the optical zoom group can be moved by and actuator that is controlled by the controller. The optical focus group 229 comprises at least one optical component and is movable along the primary optical axis and is configured to focus an image of the beam shaping object at a target surface along the primary optical axis. The controller 117 is further configured to control the position of the optical focus group along the primary optical axis through communication line 133. For instance, the optical focus group can be moved by and actuator that is controlled by the controller.
The controller can be configured to control the optical zoom group based on a first zoom level parameter, where the first zoom level parameter is indicative of the zoom level of the projected light beam. The zoom level parameter can be obtained from the memory 121, from an input signal 125 or from a user interface. The controller can also be configured to control the optical focus group based on a focus parameter. The focus parameter can be indicative of the distance where the image of the beam shaping object shall be focused, be determined based on the zoom level parameter and/or indicate if a defocused image are to be provided. The controller can further be configured to determine the focus level parameter based on the zoom level parameter, e.g., in order to maintain the same focusing during a zoom operation. In one embodiment, the optical focus group is movable between a focusing position and a de-focusing position, where in the focusing position the optical focus group is configured to image the beam shaping object at a target surface along the primary optical axis and where in the de-focusing position the optical focus group is configured to provide a defocused image of the beam shaping object. This result in the effect that a blurred image of the projected light pattern can be provided which results in a further light effect option which can be used in connection with the different light patterns provided by controlling the different groups individually.
The light fixture comprises a plurality of light sources 309 formed as LEDs arranged on a heat sink 335, a plurality of light collectors 311, an optical gate 307 and an projecting system 305. The light sources and heat sink are arranged at the bottom part of a lamp housing 337 of the light fixture and the other components are arranged inside the lamp housing 337. The light collectors 311 are configured to collect light from the LEDs 309 and to convert the collected light into a plurality of source light beams 313 (dotted lines) propagating along the optical axis 315. In the illustrated embodiment, the light collector comprises a number of lenslets each collecting light from one of the LEDs and converting the light into a corresponding source light beam. However, it is noticed that the light collector also can be embodied as a single optical lens, a Fresnel lens, a number of total reflection lenses (“TIR”) lenses, a number of light rods etc. or combinations thereof. It is understood that light beams propagating along the optical axis contain rays of light propagating at an angle, e.g. an angle less that 45 degrees to the optical axis.
As described previously, the projecting system 305 is configured to collect at least a part of the light beams transmitted through the optical gate and to project the light along the primary optical axis and may be configured to image the optical gate 307 onto some object such as a screen, e.g. a screen or an area on a concert stage. A certain image, e.g., some opaque pattern provided on a transparent window, an open pattern in a non-transparent material, or imaging object such as gobos known in the field of entertainment lighting, may be arranged near the optical gate 307 so that the illuminated image can be imaged by the optical projecting system. Accordingly, the light fixture 301 may be used for entertainment lighting.
In the illustrated embodiment, the light is directed along the optical axis 315 by the light collector 311 and passes through a number of light effect components before exiting the light fixture through a front lens 339. The light effects components creates various light effects and can for instance be any light effects components known in the art of intelligent/entertainments lighting. The light effects components can for instance be, a CMY color mixing system 341, color filters 343, gobos 345, animation effects 347, a iris diaphragm 349, prism effect 351, an optical focus group 329, an optical zoom group 327, a framing effects (not shown), or any other light effect components known in the art of entertainment lighting. The light effect components and light modifying components arranged near the optical gate 307 are throughout this application referred to as beam shaping objects, as these light effect components typical are used to provide some beam shaping of the light beam and the projecting system is configured to image the beam shaping objects along the optical axis. The mentioned light effect components only serves to illustrate the principles of an illuminating device for entertainment lighting and the person skilled in the art of entertainment lighting will be able to construct other variations with additional are less light effect components. Further, it is noticed that the order and positions of the light effect components can be changed.
Like the light source modules described in connection with
Facing
In
In
In
In
It is to be understood that the light source modules illustrated in
Returning to
In one embodiment, the projecting light fixture comprises at least one light modifying component which is movable in relation to the source light beams and can be arranged in the source light beams in a partial position. In the partial position, the light modifying component is arranged at least partially in the source light beams from at least one of the groups of light sources and light collectors and is at the same time arranged outside the source light beams from at least one of the other groups of light sources and light collectors. The light modifying components will thus modify the source light beams from at least one group of light sources and light collectors while not modifying the source light beams from another group of light sources and light collectors. As a result, it is possible to apply the light modifying component to the source light beams from at least one of the groups while not applying the light modifying component to source light beam from another one of the groups. The controller can control the groups individually and thus toggle between a light effect where the light modifying component is applied to the first source light beams and not to the second source light beams. That the light modifying component is arranged outside the source light beams from one of the groups of light sources and light collectors means that at a maximum 10% of the total amount of light hitting the light modifying component originates the source light beams intended to be outside the light modifying component. It is thus to be understood that due to practical reasons, a small amount of light from the source light beams outside the light modifying component may hit the light modifying in the partial position. However, at least 90% of the light hitting the light modifying component must originate from source light beams designed to hit the light modifying component in the partial position.
For instance, an embodiment where the light sources and light collectors are arranged in a first group and in a second group, the light modifying component is thus in the partial position arranged at least partially in the first source light beams and outside the second source light beams.
The light modifying component which can be arranged partially in the source light beams can for instance be beam shaping objects like gobos, animation wheels, framing blades, textured glass etc. and the light effect crated by the beam shaping object can thus be applied to the source light beams from one group of light sources and not to another group of light sources. The modifying component can also be color filtering components for instance a color flag which can be arranged partially in the source light beams. It is also possible to provide two light modifying components which can be arranged partially in the source light beams, for instance such that a first of the light modifying components is arranged in the source light beams from a first group while a second of the light modifying component is arranged in the source light beams from a second group.
For instance, in the illustrated projecting light fixture illustrated in
It is noticed that the projecting light fixture 301 also can be integrated as the head of a moving head light fixture comprising a head rotatable connected to a yoke, where the yoke is rotatable connected to a base. The moving head light fixture comprises pan rotating components for rotating the yoke in relation to the base and tilt rotating components for rotating the head in relation to the yoke. The skilled person will realize that the pan and tilt rotation means can be constructed in many different ways using mechanical components such as motors, shafts, gears, cables, chains, transmission systems, bearings etc. In moving head light fixtures, it is possible to arrange the controller 317 and/or the internal power supply 353 in the yoke or in the base.
The enhancing optical component can be any optical component which can be inserted into the source light beams and which can change the illumination of the light from the first group and/or the second group at the optical gate. For instance, the enhancing optics may be embodied as lenses or a plurality of lenses configured to change the convergence or the beam width of the source light beams; prisms configured to refract the source light beam in desired directions; engineered diffusers configured to changes the light distribution the source light beams; etc. In the illustrated embodiment, the enhancing optical component 557 is embodied as a pair of prisms which refracts the first and second source light beams into a first refracted source light beam 559a (illustrated in thick dashed line) and into a second refracted source light beam 559b (illustrated in thick dotted line). The refraction of the first and second source beams results in the fact that the overlapping area at the optical gate between the first and second source light beams are decreased and the differences between the first and second illumination of the beam shaping object is thus increased. As a result, the differences between the projected light patterns are increased. The original source light beams 113a and 113b are illustrated, respectively, by thin dashed lines and thin dotted lines. In the illustrated embodiment, the enhancing optical component is inserted into the light source beams in order to enhance the differences between the first illumination and the second illumination of the beam shaping object and where the difference between the first illumination and the second illumination is reduced when the enhancing optical component is removed from the source light beams. The movement of the enhancing optical component can be provided by any mechanical components and actuators as known in the art.
In an embodiment, the light projecting light fixture can comprise a minimizing optical component configured to minimize the differences between the first illumination and the second illumination, for instance, by decreasing the angle difference between the first source light beams and the second source light beams, by directing the first source light beams and second light beam towards the same areas (e.g., by increasing the overlap in illuminated areas) of the beam shaping object and/or by providing similar light distribution of the first source light beams and the second source light beams at the beam shaping object. As a consequence, the minimizing optical component makes it possible to minimize the differences between the different light patterns created by the different groups of light sources resulting in the fact the when the light pattern created by the different groups of light sources and light collectors are very similar which improves the imaging quality of the projecting system when the groups of light sources are used as one common light source in order to increase the overall light intensity. The minimizing optical component is inserted into the light source beams in order to minimize the differences between the first illumination and the second illumination when the minimizing optical component is inserted into the source light beams. The minimizing optical component can thus be moved between a minimizing position inside the source light beams and a non-minimizing position outside the source light beams.
The red light source module comprises a plurality of red light collectors 611R configured to collect light from the red light sources 609R and to convert the collected light into red source light beams 613R (illustrated as dashed lines). The plurality of red light sources and the plurality of red light collectors are arranged in a plurality of groups, where each group comprises at least one red light source and at least one red light collector and provide a red illumination of the beam shaping device near the optical gate and where the plurality of red illuminations of the beam shaping object are different. A controller is configured to control the plurality of red groups individually as described previously. It is noted that the red light sources and red light collectors can be grouped, controlled and provided as any of the embodiments described above.
The green light source module comprises a plurality of green light collectors 611G configured to collect light from the green light sources 609G and to convert the collected light into green source light beams 613G (illustrated as dotted lines). The plurality of green light sources and the plurality of green light collectors are arranged in a plurality of groups, where each group comprises at least one green light source and at least one green light collector and provides a green illumination of the beam shaping object near the optical gate and where the plurality of green illuminations of the optical gate are different. A controller is configured to control the plurality of green groups individually as described previously. It is noted that the green light sources and the green light collectors can be grouped, controlled and or provided as any of the embodiments described above.
The blue light source module comprises a plurality of blue light collectors 611B configured to collect light from the blue light sources 609B and to convert the collected light into blue source light beams 613B (illustrated as dash-dotted lines). The plurality of blue light sources and the plurality of blue light collectors are arranged in a plurality of groups, where each group comprises at least one blue light source and at least one blue light collector and provides a blue illumination of the beam shaping object near the optical gate and where the plurality of blue illuminations of the bean shaping device are different. A controller is configured to control the plurality of blue groups individually as described previously. It is noted that the blue light sources and the blue light collectors can be grouped, controlled and or provided as any of the embodiments described above.
This embodiment makes it possible to provide similar light effects as described previously, with the addition that the light effects can be provided using each of the three primary colors in a color cube system and the intensity of each of the primary colors are high.
The projecting light fixture comprises the same basic components as the projecting light fixtures illustrated in
The projecting light fixture comprises a light source module 703 comprising a plurality of LEDs 709 arranged on a LED PCB 771 and a light collector comprising a plurality of lenslets 761. Each of the lensets 761 is configured to collect light from a corresponding LED 709 and convert the collected light into a corresponding source light beam propagating along the primary optical axis 715. A projecting system 705 is configured to collect at least a part of the light beams and to project the collected light along the primary optical axis 715. The LEDs 709 and lenslets are arranged in a plurality of groups as described previously and can thus create a plurality of different illuminations of the optical gate.
In the illustrated embodiment the light is directed along the optical axis 715 by the light collector 711 and passes through a number of light effect components before exiting the light fixture through a front lens 739. In this embodiment the projecting light fixture 701 comprises a CMY color mixing system 741, a color wheel 773, a rotating gobo wheel 775, a fixed gobo wheel 777, an iris diaphragm 749, an optical focus group 729, a prism 751 and an optical zoom group 727.
The CMY color mixing system 741 comprises a pair of cyan flags 779C, a pair of magenta flags 779M, and a pair of yellow flags 779Y, which can be inserted into the source light beams by actuators (not shown) and provide a color filtering effect. The color of the source light beam can thus be controlled using subtractive color mixing. The CMY flags can be inserted partially into the source light beams and can thus be arranged in light originating from one of the groups while light from another group does not hit the CMY flags. Color light effects where the color of light originating from one group of light sources are different from the color of light originating from another group of light sources can hereby be provided. For instance, in this embodiment, the CMY flags can be arranged partially in the light source beams such that light originating from the first group 708a and fourth group 708d hits the CMY flags while light from the second and third group do not hit the CMY flags. It is noticed that the CMY flags and the mechanics moving the CMY flags can be embodied in many ways as known in the art of entertainment light fixtures.
The color wheel 773 comprises a plurality of color filters 743 of different colors the color wheel can be rotated around a center axis by an actuator (not shown) and the color filters can hereby be inserted into the source light beams. The color wheel comprises also an open section 781 which can be inserted into the source light beams and whereby no color effect is applied to the source light beams by the color wheel. The color wheel and color filters can be embodied in any way as known in the art of entertainment lighting.
The rotating gobo wheel 775 comprises a plurality of gobos 743, where each of the gobos are arrange in a gobo holder 783 enabling rotation of the gobo around it's center axis. Each of the gobos are arranged in a bearing comprising a toothed wheel which engages a center toothed wheel (not shown) and rotation of the center toothed wheel results in rotation of the rotating gobo holders. The gobo wheel can also be rotated in order to arrange different gobos in the source light beams and comprises also an open section 781 with no gobo. In this embodiment, the optical gate is defined by the gobos and the open section of the rotating gobo wheel. The rotating gobo wheel, gobo holders and gobos filters can be embodied in any way as known in the art of entertainment lighting.
The projecting light fixture comprises also a fixed gobo wheel 777, which comprises a plurality of fixed gobos 743 and an open section 781. The fixed gobo wheel can be rotated in order to arrange the gobos in the source light beams. The fixed gobo wheel can be embodied in any way as known in the art of entertainment lighting.
An iris diaphragm 749 has been arranged after the fixed gobo wheel and can be used to delimit the source light beams. The iris diaphragm can be embodied in any way as known in the art of entertainment lighting.
The optical focus group 729 can be moved along the primary optical axis by an actuator (not shown) and optical focus group can thus be used to provide a sharp image of the gobos at a target surface along the primary optical axis. However it is also possible to arrange the optical focus group in non-focusing positions if desired. The optical zoom group 727 can be moved along the primary optical axis in order to change the size and/or divergence of the light beams. A faceted prism is arranged on a prism arm 787, which can move the prism in and our out of the source light beams. Additionally, the prism arm comprises a mechanism which can rotate the prism around its own central axis when arranged in the source light beams. The facets of the prism deflects the source light beam and creates a number of “copies” of the source light beams as known in the art of entertainment lighting. The number of facets determines the number of copies. For example, a 3-faceted prism will create three copies of the source light beams and in an image projecting system three identical images will be created offset each other. The optical focus group, the optical zoom group the prism can be provided in any way as known in the art of entertainment lighting. The controller can be configured to coordinate the rotation of the prism in relation the variations of the different illuminations of the beam shaping object. This makes it possible to rotate the “copies” of the light patterns in relation to the primary optical axis and at the same time change the light patterns using by varying the intensity of the different illuminations.
The step 891 of arranging the beam shaping object near an optical gate can be performed by arranging any of the beam shaping objects 106 of the projecting light fixtures shown in
The step 892 of illuminating the beam shaping object with light can be performed by using a plurality of light sources and a plurality of light collectors, where the light collectors collect light from at least one of the light sources and convert the collected light into a source light beam, The source light beam propagates at least partially along a primary optical axis. This can be done by using any of the light source modules of the projecting light fixtures illustrated in
The step of projecting 893 the light passing through beam shaping object along a primary optical axis can be performed by using a projecting system, where the projecting system is configured to collect a part of the light generated by the light sources and which pass through the beam shaping object. The projecting system can be any optical projecting system such that any of the optical systems described previously in connection with the projecting light fixtures of
Additionally, the step 892 of illuminating the beam shaping object comprises step 894 of providing a plurality of different illuminations at the beam shaping object and the step of varying 895 the intensity of the plurality of different illuminations in relation to each other.
The method of creating light effects 890 according to the present invention makes it possible to provide a large number of new light effects. By illuminating the beam shaping object with a plurality of different illuminations and controlling the intensity of the different illuminations in relation to each other, this condition makes it possible to create a large number of light effects as each different illumination creates its own light effects and by varying the intensity of the different illuminations makes it possible to create a very large number of new light effects. The intensity of the different illuminations can be varied dynamically in relation to each other whereby animated light effects can be created. In fact, it is possible to provide animated light effects without moving the beam shaping object in relation to the source light beams, as is common practice in the prior art. However, it is also possible to combine the variation of intensity of the different illuminations with movements of the beam shaping object, which results in even more new light effects. The method can thus optionally also comprise step 896 of moving the beam shaping object in relation to the source light beams and step of 899 coordinating movement of the beam shaping object in relation the step of varying the intensity of the different illuminations in relation to each other.
Throughout
| Number | Date | Country | Kind |
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| 2014 70541 | Sep 2014 | DK | national |
| Number | Name | Date | Kind |
|---|---|---|---|
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| 1611827 | May 2005 | CN |
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| 2005158699 | Jun 2005 | JP |
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| 20160069540 A1 | Mar 2016 | US |
