Color conversion occlusion and associated methods

• US 8,465,167 B2
• Filed: 09/16/2011
• Issued: 06/18/2013
• Est. Priority Date: 09/16/2011
• Status: Active Grant

• Current Assignee: Lighting Science Group Corporation (Pegasus Capital Advisors, L.P.)
• Original Assignee: Lighting Science Group Corporation (Pegasus Capital Advisors, L.P.)
• Inventors: Maxik, Fredric S., Bretschneider, Eric, Soler, Robert R., Bartine, David E.
• Primary Examiner(s): HINES, ANNE M
• Application Number:
  US13/234,371
• Publication Number:
  US 20130070439A1
• Time in Patent Office: 641 Days
• Field of Search: 362/84, 362606-609, 362/612
• US Class Current: 362/84
• CPC Class Codes: F21V 13/08 the elements being filters or photoluminescent elements and reflectors
• CPC Class Codes: F21V 7/0008 providing for indirect lighting
• CPC Class Codes: F21V 7/0033 with successive reflections from one reflector to the next or following
• CPC Class Codes: F21V 7/26 the material comprising photoluminescent substances
• CPC Class Codes: F21V 7/30 the coatings comprising photoluminescent substances
• CPC Class Codes: F21V 9/08 for producing coloured light, e.g. monochromatic; for reducing intensity of light with provision for controlling the colour F21V9/40
• CPC Class Codes: F21V 9/32 characterised by the arrangement of the photoluminescent material
• CPC Class Codes: F21V 9/38 Combination of two or more photoluminescent elements of different materials
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A light converting device is described for receiving source light within a source wavelength range, converting the source light into a converted light, and reflecting the converted light to a desired output direction. The lighting device may use a color conversion occlusion to receive the source light and reflect a converted light in the desired output direction. The converted light may be intermediately reflected by the enclosure as it is directed in the desired output direction.

Claims

1. A light converting device comprising:

an enclosure;

an occlusion; and

a conversion material located adjacent to and generally conforming to a contour of at least part of the occlusion;

wherein at least part of the occlusion is located within the enclosure to receive a source light within a source wavelength range;

wherein the conversion material converts the source light to a converted light within a converted wavelength range;

wherein the converted light is reflected by the occlusion to a desired output direction.

2. A light converting device according to claim 1 wherein the source light is received by the occlusion, reflected from the occlusion to the enclosure and reflected from the enclosure to the desired output direction.

3. A light converting device according to claim 1 further comprising an occlusion support connected to the enclosure and the occlusion.

4. A light converting device according to claim 1 wherein the occlusion support has a first end connected to an interior surface of the enclosure and a second end opposite the first end connected to the occlusion.

5. A light converting device according to claim 1 wherein the conversion material is selected from the group consisting of phosphors, quantum dots, luminescent materials, and fluorescent materials.

6. A light converting device according to claim 1 wherein the source light is a monochromatic light.

7. A light converting device according to claim 1 wherein the source wavelength range is selected from the group consisting of a blue spectrum and an ultraviolet spectrum.

8. A light converting device according to claim 7 wherein the source wavelength range of the source light within the ultraviolet spectrum is between 200 nanometers and 400 nanometers.

9. A light converting device according to claim 7 wherein the source wavelength range of the source light within the blue spectrum is between 400 nanometers and 500 nanometers.

10. A light converting device according to claim 1 wherein the source light originates at least partially from within the enclosure.

11. A light converting device according to claim 1 wherein a reflecting surface of the occlusion is arcuate.

12. A light converting device comprising:

an enclosure;

an occlusion connected to the enclosure via an occlusion support; and

a conversion material located adjacent to and generally conforming to a contour of at least part of the occlusion;

wherein at least part of the occlusion is located within the enclosure to receive a source light within a source wavelength range;

wherein the conversion material converts the source light to a converted light within a converted wavelength range;

wherein the occlusion reflects the converted light toward the enclosure and the enclosure reflects the converted light toward a desired output direction.

13. A light converting device according to claim 12 wherein the occlusion support has a first end connected to an interior surface of the enclosure and a second end opposite the first end connected to the occlusion.

14. A light converting device according to claim 12 wherein the conversion material is selected from the group consisting of phosphors, quantum dots, luminescent materials, and fluorescent materials.

15. A light converting device according to claim 12 wherein the source light is a monochromatic light.

16. A light converting device according to claim 12 wherein the source wavelength range is selected from the group consisting of a blue spectrum and an ultraviolet spectrum.

17. A light converting device according to claim 16 wherein the source wavelength range of the source light within the ultraviolet spectrum is between 200 nanometers and 400 nanometers.

18. A light converting device according to claim 16 wherein the source wavelength range of the source light within the blue spectrum is between 400 nanometers and 500 nanometers.

19. A light converting device according to claim 12 wherein the source light originates at least partially from within the enclosure.

20. A light converting device according to claim 12 wherein a reflecting surface of the occlusion is arcuate.

21. A method of converting a source light using a light converting device having an enclosure, an occlusion and a conversion material located adjacent to and generally conforming to a contour of the occlusion, the method comprising:

receiving the source light within a source wavelength range at the occlusion;

converting the source light into a converted light within a converted wavelength range; and

reflecting the converted light from the occlusion toward a desired output direction.

22. A method according to claim 21 wherein at least a part of the occlusion is located within the enclosure.

23. A method according to claim 21 wherein reflecting the converted light towards the desired output direction further includes reflecting the converted light from the occlusion to the enclosure, and reflecting the converted light from the enclosure to the desired output direction.

24. A method according to claim 21 wherein the occlusion is connected to the enclosure using an occlusion support.

25. A method according to claim 24 wherein the occlusion support has a first end connected to an interior surface of the enclosure and a second end opposite the first end connected to the occlusion.

26. A method according to claim 21 wherein the source light is a monochromatic light.

27. A method according to claim 21 wherein the source wavelength range is selected from a group consisting of a blue spectrum and an ultraviolet spectrum.

28. A method according to claim 21 wherein the source wavelength range of the source light within the ultraviolet spectrum is between 200 nanometers and 400 nanometers.

29. A method according to claim 21 wherein the source wavelength range of the source light within the blue spectrum is between 400 nanometers and 500 nanometers.

30. A method according to claim 21 wherein the conversion material is selected from a group consisting of phosphors, quantum dots, luminescent materials, and fluorescent materials.

31. A method according to claim 21 wherein a reflecting surface of the occlusion is arcuate.

32. A method of using a light converting device comprising an occlusion located adjacent to an enclosure via an occlusion support and a conversion material located adjacent to and generally conforming to a contour of the occlusion, the method comprising:

receiving a source light within a source wavelength range at the occlusion;

converting the source light into a converted light within a converted wavelength range;

reflecting the converted light from the occlusion toward the enclosure; and

reflecting the converted light from the enclosure to a desired output direction.

33. A method according to claim 32 wherein the occlusion support has a first end connected to an interior surface of the enclosure and a second end opposite the first end connected to the occlusion.

34. A method according to claim 32 wherein the source light is a monochromatic light.

35. A method according to claim 32 wherein the source wavelength range is selected from a group consisting of a blue spectrum and an ultraviolet spectrum.

36. A method according to claim 32 wherein the source wavelength range of the source light within the ultraviolet spectrum is between 200 nanometers and 400 nanometers.

37. A method according to claim 32 wherein the source wavelength range of the source light within the blue spectrum is between 400 nanometers and 500 nanometers.

38. A method according to claim 32 wherein the conversion material is selected from a group consisting of phosphors and quantum dots.

39. A method according to claim 32 wherein a reflecting surface of the occlusion is arcuate.