INDIRECT LIGHT MIXING LED MODULE FOR POINT-SOURCE APPLICATIONS

• US 20170108178A1
• Filed: 10/15/2015
• Published: 04/20/2017
• Est. Priority Date: 10/15/2015
• Status: Active Grant

• Current Assignee: Current Lighting Solutions, LLC (f/k/a GE Lighting Solutions, LLC) (American Industrial Partners)
• Original Assignee: GE Lighting Solutions LLC (Savant Systems, LLC)
• Inventors: DUBUC, Eden, TAVERNESE, Luigi
• Granted Patent: US 10,100,984 B2
• Time in Patent Office: Days
• CPC Class Codes: B61L 2207/02 using light-emitting diodes [LEDs]
• CPC Class Codes: B61L 5/1827 using light sources of different colours and a common optical system
• CPC Class Codes: B61L 5/1836 using light sources of different colours and separate optical systems
• CPC Class Codes: F21K 9/62 using mixing chambers, e.g. housings with reflective walls
• CPC Class Codes: F21V 13/04 the elements being reflectors and refractors for vehicle rear lights F21S43/40
• CPC Class Codes: F21V 7/0008 providing for indirect lighting
• CPC Class Codes: F21V 7/045 with spherical surface
• CPC Class Codes: F21W 2131/103 of streets or roads
• CPC Class Codes: F21Y 2101/00 Point-like light sources
• CPC Class Codes: F21Y 2113/13 comprising an assembly of point-like light sources

Abstract

An system including a housing defining an enclosure and having an aperture in an exterior surface of the housing; a concave reflector, the reflector being disposed on or in the enclosure of the housing to reflect light emissions; a plurality of solid state light sources disposed within the housing to direct light emissions within the enclosure towards the reflector, the plurality of solid state light sources including multiple groups of solid state light sources; and a mixing chamber defined by a space within the enclosure located between the reflector and the aperture, wherein the reflector is configured to reflect light emissions from the plurality of solid state light sources towards the mixing chamber where the reflected light emissions are to combine before exiting the housing through the aperture.

Claims

1. A lighting system comprising:

a housing defining an enclosure and having an aperture in an exterior surface of the housing;

a reflector being disposed on or in the enclosure of the housing to reflect light emissions;

a plurality of groups of solid state light sources disposed within the housing, each group including one or more solid state lighting sources configured to direct light emissions therefrom towards the reflector and each group of the plurality of solid state light sources operate to emit light separately of the other groups of solid state light sources; and

a mixing chamber defined by a space within the enclosure located between the reflector and the aperture, wherein the reflector is configured to reflect light emissions from the plurality of groups of solid state light sources towards the mixing chamber where the reflected light emissions are to combine before exiting the housing through the aperture.

2. The system of claim 1, wherein the solid state light sources comprise a light emitting diode.

3. The system of claim 1, further comprising a lens positioned to cover at least a portion of the aperture.

4. The system of claim 3, wherein the lens is light transmissive.

5. The system of claim 1, wherein the concave reflector comprises a hemispherical shape.

6. The system of claim 1, wherein the plurality of solid state light sources comprise an array of light sources disposed along a periphery of the aperture oriented to emit light towards the reflector.

7. The system of claim 1, wherein the combined light emissions exiting the housing through the aperture has a same optical characteristics for each of the plurality of groups of solid state light sources.

8. The system of claim 1, wherein the concave reflector on the housing is integral to the housing.

9. The system of claim 1, wherein one of the plurality of groups of solid state light sources is to emit light exclusive of the other groups of the solid state light sources at a given time.

10. The system of claim 1, wherein the combined light emissions exiting the housing through the aperture has a uniformity of optical characteristics over the aperture for each of the plurality of groups of solid state light sources.

11. The system of claim 1, wherein more than fifty percent of the light emissions from the plurality of solid state light sources is reflected by the reflector multiple times before exiting the housing through the aperture

12. The system of claim 1, wherein an area including the aperture is within a surface including the solid state light sources.

14. The system of claim 1, wherein the solid state light sources comprise a light emitting diode.

15. The system of claim 1, further comprising a lens positioned to cover at least a portion of the aperture.

16. The system of claim 3, wherein the lens is light transmissive.

17. The system of claim 1, wherein the concave reflector comprises a hemispherical shape.

18. The system of claim 1, wherein the plurality of solid state light sources comprise an array of light sources disposed along a periphery of the aperture oriented to emit light towards the reflector.

19. The system of claim 1, wherein the plurality of groups of solid state light sources comprises a group of red solid state light sources, a group of green solid state light sources, and a group of blue solid state light sources,.

20. The system of claim 1, wherein the concave reflector on the housing is integral to the housing.

21. The system of claim 1, wherein one of the plurality of groups of solid state light sources is to exclusively emit light at a time.

22. The system of claim 1, wherein the combined light emissions exiting the housing through the aperture has a uniformity of optical characteristics over the aperture for each of the plurality of groups of solid state light sources.

23. The system of claim 1, wherein more than fifty percent of the light emissions from the plurality of solid state light sources is reflected by the reflector multiple times before exiting the housing through the aperture

24. The system of claim 1, wherein an area including the aperture is within a surface including the solid state light sources.

13. A lighting system comprising:

a housing defining an enclosure and having an aperture in an exterior surface of the housing;

a reflector being disposed on or in the enclosure of the housing to reflect light emissions;

a plurality of groups of solid state light sources disposed within the housing, each group including one or more solid state lighting sources having a same optical color output configured to direct light emissions therefrom towards the reflector and each group of the plurality of solid state light sources operate to emit light separately of the other groups of solid state light sources; and

a mixing chamber defined by a space within the enclosure located between the reflector and the aperture, wherein the reflector is configured to reflect light emissions from the plurality of groups of solid state light sources towards the mixing chamber where the reflected light emissions are to combine before exiting the housing through the aperture.