SYSTEM FOR GENERATING NON-HOMOGENOUS LIGHT AND ASSOCIATED METHODS

• US 20130278172A1
• Filed: 12/10/2012
• Published: 10/24/2013
• Est. Priority Date: 05/15/2011
• Status: Active Grant

• Current Assignee: Healthe, Inc.
• Original Assignee: Lighting Science Group Corporation (Pegasus Capital Advisors, L.P.)
• Inventors: Maxik, Fredric S., Bartine, David E., Soler, Robert R., Widjaja, Addy S., Regan, Matthew, Grove, Eliza Katar
• Granted Patent: US 8,760,370 B2
• Time in Patent Office: Days
• US Class Current: 315/294
• CPC Class Codes: G06T 11/001 Texturing; Colouring; Generation of texture or colour inpainting G06T5/77
• CPC Class Codes: G09G 2320/0666 for control of colour parameters, e.g. colour temperature
• CPC Class Codes: G09G 2340/06 Colour space transformation
• CPC Class Codes: G09G 3/3413 Details of control of colour illumination sources
• CPC Class Codes: G09G 5/02 characterised by the way in which colour is displayed details of colour display specific for CRTs G09G1/28; specific for flat matrix panels other than liquid crystal displays G09G3/2003; specific for liquid crystal displays G09G3/3607
• CPC Class Codes: H05B 45/20 Controlling the colour of the light
• CPC Class Codes: H05B 47/155 Coordinated control of two or more light sources
• CPC Class Codes: H05B 47/16 by timing means
• CPC Class Codes: H05B 47/175 by remote control
• CPC Class Codes: H05B 47/19 via wireless transmission
• CPC Class Codes: Y02B 20/40 Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

A lighting system including a plurality of luminaires capable of generating polychromatic light having a dominant wavelength in the visible spectrum and arranged into an array and a computerized device electrically coupled to the plurality of luminaires so as to selectively operate each individual luminaire to produce source light varying with each other and with time. The computerized device operates the luminaire such that each luminaire emits a source light, the source lights combining to form a combined light having selected characteristics. The source lights, when perceived directly, recreate a lighting scenario having varying lighting characteristics.

Claims

1. A lighting apparatus comprising:

a computerized device; and

a plurality of luminaires, each luminaire comprising a controller configured to operate the luminaire and positioned in communication with the computerized device;

wherein each luminaire is selectively operable to emit polychromatic source light, each source light having a dominant source light wavelength within a range from about 390 nanometers to about 750 nanometers;

wherein the plurality of luminaires are arrangeable so as to form an array;

wherein the computerized device is programmable to operate the plurality of luminaires such that at least two of the plurality of luminaires emit source lights with different dominant source light wavelengths, and such that the one or more source lights emitted by the plurality of luminaires combine to form a combined light at a distance from the plurality of luminaires defined as a combining distance; and

wherein the computerized device is configurable to vary the dominant source light wavelength of each luminaire with time.

2. A lighting apparatus according to claim 1 wherein the combined light is a white light.

3. A lighting apparatus according to claim 1 wherein the combined light at the combining distance has an area of illumination having a length and a width;

and wherein the computerized device is configurable to operate the plurality of luminaires so as to control the variation of at least one characteristic of the combined light along at least one of the length and the width of the area of illumination.

4. A lighting apparatus according to claim 3 wherein the characteristic of the combined light controlled by the computerized device is selected from the group consisting of color temperature, color rendering index, chromaticity, and luminous intensity.

5. A lighting apparatus according to claim 3 wherein the characteristic of the combined light controlled by the computerized device does not vary more than 5% across the length and width of the area of illumination.

6. A lighting apparatus according to claim 1 wherein the combined light comprises a plurality of wavelengths;

and wherein the plurality of wavelengths varies with time.

7. A lighting apparatus according to claim 6 wherein the controller operates the plurality of luminaires such that a selected wavelength of light is persistently included in the plurality of wavelengths.

8. A lighting apparatus according to claim 1 wherein a luminaire of the plurality of luminaires is operable to emit a source light comprising two wavelengths;

wherein the source light has a color associated therewith; and

wherein the color is non-white.

9. A lighting apparatus according to claim 1 wherein the combined light has a color rendering index of greater than about 50.

10. A lighting apparatus according to claim 1 wherein the computerized device is programmable to determine the relative location of each luminaire of the plurality of luminaires with respect to an adjacent at least one luminaire of the plurality of luminaires and each other luminaire of the plurality of luminaires.

11. A lighting apparatus according to claim 1 wherein the computerized device is configured to receive a lighting scenario from a remote computerized device placed in electronic communication with the computerized device;

and wherein the computerized device is programmable to operate the plurality of luminaires responsive to the lighting scenario received from the remote computerized device.

12. A lighting apparatus according to claim 11 wherein the computerized device is positioned in electronic communication with a network;

and wherein the computerized device is configured to receive the lighting scenario from the remote computerized device across the network.

13. A lighting apparatus according to claim 1 wherein each luminaire of the plurality of luminaires is positioned at an offset distance from each other adjacent luminaire;

and wherein the combining distance is determined by the offset distance.

14. A lighting apparatus according to claim 1 wherein each luminaire of the plurality of luminaires comprises a plurality of light-emitting diodes (LEDs).

15. A lighting apparatus according to claim 14 wherein at least a portion of the light emitted from the plurality of LEDs is converted using a color conversion layer.

16. A lighting apparatus according to claim 1 wherein the combining distance is less than a distance from the plurality of luminaires to about an eye level of an average observer.

17. A method of operating a lighting system that includes a computerized device and a plurality of luminaires operably coupled to the computerized device being arranged in an array and operable to emit polychromatic source lights having a dominant wavelength within a range from about 390 nanometers to about 750 nanometers, the method comprising the steps of:

operating the plurality of luminaires to each emit a source light having respective first dominant wavelengths, the source lights of the plurality of luminaires combining to form a first combined light; and

operating the plurality of luminaires to each emit a source light having respective second dominant wavelengths, the source lights of the plurality of luminaires combining to form a second combined light;

wherein the first dominant wavelength of the source light for one luminaire of the plurality of luminaires is different from the second dominant wavelength of the source light for that luminaire; and

wherein the first dominant wavelength of the source light for one luminaire of the plurality of luminaires may be different from the first dominant wavelength of the source light of another luminaire of the plurality of luminaires.

18. A method according to claim 17 further comprising the steps of:

placing the computerized device in electronic communication with a remote computerized device;

receiving from the remote computerized device a lighting scenario; and

operating the plurality of luminaires responsive to the received lighting scenario.

19. A method according to claim 18 wherein the lighting scenario received from the remote computerized device is a real-time feed from at least one of a video capture device, an audio capture device, a video playback device, and an audio playback device.

20. A method according to claim 18 wherein the lighting scenario received from the remote computerized device is a pre-programmed lighting scenario.

21. A method according to claim 17 wherein the computerized device comprises a memory, and wherein the method further comprising the steps of:

placing a remote computerized device having a pre-programmed lighting scenario included therewithin in electronic communication with the computerized device;

copying the pre-programmed lighting scenario from the remote computerized device to the memory and storing it therewithin; and

operating the plurality of luminaires responsive to the pre-programmed lighting scenario in the memory.

22. A method according to claim 17 further comprising the steps of:

sending a locating signal from the computerized device requesting a relative location to each of the plurality of luminaires;

receiving a response signal at the computerized device from each of the plurality of luminaires; and

operating each of the plurality of luminaires responsive to the response signal.

23. A method according to claim 17 wherein the combined light at the combining distance has an area of illumination having a length and a width;

and wherein the method further comprises the step of operating the plurality of luminaires so as to control the variation of at least one characteristic of the combined light along at least one of the length and the width of the combined light at the combining distance.

24. A method according to claim 23 wherein the characteristic of the combined light controlled by the computerized device selected from the group consisting of color temperature, color rendering index, chromaticity, and luminous intensity.

25. A method according to claim 23 wherein the characteristic of the combined light controlled by the computerized device does not vary more than 5% across the length and width of the area of illumination.

26. A method of operating a lighting system that includes a computerized device and a plurality of luminaires operably coupled to the computerized device being arranged in an array and operable to emit polychromatic source lights having a dominant wavelength within a range from about 390 nanometers to about 750 nanometers, the method comprising the steps of:

determining a lighting scenario, wherein the lightning scenario comprises a plurality of pixels arranged into an array, each pixel corresponding to one of the luminaires of the plurality of luminaires, and each pixel having a pixel light having a dominant wavelength;

determining a selected combined light;

assigning the dominant wavelength of each pixel to the corresponding luminaire, defining a pixel light for each luminaire;

determining whether a metamer comprising the dominant wavelengths of each of the luminaires produces the selected combined light;

wherein the determination that the metamer produces the selected combined light results in the step of operating the plurality of luminaires according to their respective pixel lights; and

wherein the determination that the metamer does not produce the selected combined light results in the steps of;

determining a first subordinate light that combines with the metamer to produce the selected combined light;

identifying a pixel light of one of the pixels that can be adjusted to include the first subordinate light;

determining a first modified pixel light for the identified pixel that will produce both the dominant wavelength of the pixel light of the identified pixel and the first subordinate light; and

operating the plurality of pixels according to their respective pixel light or the first modified pixel light.

27. A method according to claim 26 wherein the selected combined light comprises a specification of a selected characteristic of the combined light to be controlled within the metamer, the selected characteristic being selected from the group consisting of color temperature, color rendering index, chromaticity, and luminous intensity.

28. A method according to claim 26 wherein the plurality of pixels associated with the lighting scenario is greater in number that the plurality of luminaires;

and wherein the method further comprises rendering the lighting scenario into a plurality of pixels that is equal in number to the plurality of luminaires.

29. A method according to claim 26 further comprising the step of defining a plurality of combination groups comprising a subset of the plurality of luminaires, wherein each combination group has an associated metamer comprising the dominant wavelengths of each of the pixel lights of the combination group.

30. A method according to claim 29 further comprising the steps of:

determining whether the metamer of each combination group produces the selected combined light;

wherein the determination that each of the metamers produces the selected combined light results in the step of operating the plurality of luminaires according to their respective pixel lights; and

wherein the determination that at least one of the metamers does not produce the selected combined light results in the steps of;

identifying the combination group that does not produce the selected combined light;

determining a first subordinate light that combines with the metamer of the identified combination group to produce the selected combined light;

determining a first modified pixel light for at least one of the pixel lights of the luminaires of the combination group that will produce both the dominant wavelength of the pixel light of the luminaire and the first subordinate light; and

operating the plurality of luminaires according to its respective pixel light or the first modified pixel light.

31. A method according to claim 30 wherein a first combination group includes a shared luminaire that is included in a second combination group, wherein the first combination group is identified as not producing the selected combined light, and wherein the first modified pixel light is determined for the shared luminaire, the method further comprising the steps of:

determining whether a modified metamer of the second combination produces the selected combined light where the modified metamer comprises the first modified pixel light of the shared luminaire and the dominant wavelengths of the other luminaires of the second combination group;

wherein the determination that the modified metamer of the second combination group produces the selected combined light results in operating the luminaire according to the modified pixel light and the other luminaires of the plurality of luminaires according to their respective pixel lights; and

wherein the determination that the modified metamer of the second combination group does not produce the selected combined light results in the steps of;

determining a second subordinate light that combines with the modified metamer of the second combination group to produce the selected combined light;

determining a second modified pixel light for at least one of the luminaires of the second combination group that will produce both the dominant wavelength and the second subordinate light for that luminaire; and

operating the plurality of luminaires according to its respective pixel light, modified pixel light, or second modified pixel light.

32. A method according to claim 31 wherein the first modified pixel light is determined to include the dominant wavelength for the shared luminaire as well as the first subordinate light and the second subordinate light, such that the first modified pixel light and the second modified pixel light are combined.

33. A method according to claim 31 wherein the second modified pixel light is determined for a luminaire of the second combination group other than the shared luminaire.

34. A method according to claim 26 wherein the step of determining a lighting scenario comprises the steps of:

placing the computerized device in electronic communication with a remote computerized device; and

receiving from the remote computerized device a lighting scenario.

35. A method according to claim 26 where the step of determining a selected combined light comprises the step of receiving an indication of a specification of a selected characteristic from a remote computerized device, the characteristic being selected from the group consisting of color temperature, color rendering index, chromaticity, and luminous intensity.