Dual characteristic color conversion enclosure and associated methods

• US 8,545,034 B2
• Filed: 01/24/2012
• Issued: 10/01/2013
• Est. Priority Date: 01/24/2012
• Status: Expired due to Fees

• Current Assignee: Healthe, Inc.
• Original Assignee: Lighting Science Group Corporation (Pegasus Capital Advisors, L.P.)
• Inventors: Bartine, David E., Grove, Eliza Katar, Oostdyk, Mark Andrew, Maxik, Fredric S., Soler, Robert R.
• Primary Examiner(s): Husar, Stephen F
• Assistant Examiner(s): DUNWIDDIE, MEGHAN K
• Application Number:
  US13/357,283
• Publication Number:
  US 20130188330A1
• Time in Patent Office: 616 Days
• Field of Search: 362/84, 362/311.02, 362/260, 362/293, 359290-293, 359/295, 359/298, 313/503, 313/504
• US Class Current: 362/84
• CPC Class Codes: F21V 3/08 the material comprising photoluminescent substances
• CPC Class Codes: F21V 3/10 characterised by coatings
• CPC Class Codes: F21V 3/12 the coatings comprising photoluminescent substances
• CPC Class Codes: F21V 9/06 for filtering out ultraviolet radiation
• CPC Class Codes: F21V 9/30 Elements containing photoluminescent material distinct from or spaced from the light source shades F21V1/17; globes, bowls or cover glasses F21V3/08, F21V3/12; refractors F21V5/10; reflectors F21V7/26, F21V7/30; elements with provision for controlling the spectral properties or intensity F21V9/40
• CPC Class Codes: F21V 9/45 by adjustment of photoluminescent elements
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A light converting device includes a wide production conversion material and a narrow production conversion material to convert the source light into a first and second interim light, respectively. The conversion materials may be included in, or applied to, an enclosure. The first and second interim light may be included in a converted light. The converted light may be included with the source light to create a white light. The wide production conversion material may have wide absorption and scatter characteristics. The narrow production conversion material may have narrow absorption and scatter characteristics to substantially reduce inefficiencies caused by double conversion of light.

Claims

1. A light converting device comprising:

an enclosure comprised of a bulk material;

a wide production conversion material located adjacent to at least part of the enclosure to convert a source light within a source wavelength range to a first interim light within a first interim wavelength range; and

a narrow production conversion material located adjacent to at least part of the enclosure to convert the source light within the source wavelength range to a second interim light within a second interim wavelength range;

wherein the first interim light and the second interim light are substantially included in a converted light;

wherein the first interim wavelength range and the second interim wavelength range are included in a converted wavelength range.

2. A light converting device according to claim 1 wherein the wide production conversion material includes a phosphor.

3. A light converting device according to claim 1 wherein the source light is converted to the first interim light through a Stokes shift of the source wavelength range to the first interim wavelength range.

4. A light converting device according to claim 1 wherein the source light is converted to the first interim light through an anti-Stokes shift of the source wavelength range to the first interim wavelength range.

5. A light converting device according to claim 1 wherein the narrow production conversion material includes a material that is selected from a group consisting of a fluorescent, luminescent, and phosphorescent material.

6. A light converting device according to claim 1 wherein the narrow production conversion material includes a quantum dot.

7. A light converting device according to claim 1 wherein the source light is converted to the second interim light through a Stokes shift of the source wavelength range to the second interim wavelength range.

8. A light converting device according to claim 1 wherein the source light is converted to the second interim light through an anti-Stokes shift of the source wavelength range to the second interim wavelength range.

9. A light converting device according to claim 1 wherein the wide production conversion material is included in a coating, at least part of the source light being converted by the coating.

10. A light converting device according to claim 9 wherein the coating is applied to at least one of the enclosure and the light source.

11. A light converting device according to claim 1 wherein the narrow production conversion material is included in a coating, at least part of the source light being converted by the coating.

12. A light converting device according to claim 11 wherein the coating is applied to at least one of the enclosure and the light source.

13. A light converting device according to claim 1 wherein the wide production conversion material is included in the bulk material of the enclosure.

14. A light converting device according to claim 1 wherein the narrow production conversion material is included in the bulk material of the enclosure.

15. A light converting device according to claim 1 wherein the source light is converted by the wide production conversion material and the narrow production conversion material substantially simultaneously.

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

17. A light converting device according to claim 1 wherein the source wavelength range is between 200 nanometers and 500 nanometers.

18. A light converting device according to claim 1 wherein the source wavelength range is between 500 and 1300 nanometers.

19. A light converting device according to claim 1 wherein the enclosure encloses at least part of a light source that produces the source light.

20. A light converting device according to claim 1 wherein the source light is emitted by a light emitting semiconductor device.

21. A light converting device according to claim 1 wherein the wide production conversion material is defined by wide absorption characteristics;

wherein the narrow production conversion material is defined by narrow absorption characteristics;

wherein the wide production conversion material absorbs at least some of the source light;

wherein the narrow production conversion material absorbs at least some of the source light that differs from the source light absorbed by the wide production conversion material;

wherein the wide production conversion material absorbs a substantially negligible quantity of the second interim light; and

wherein the narrow production conversion material absorbs a substantially negligible quantity of the first interim light.

22. A light converting device according to claim 1 wherein the wide production conversion material is defined by wide scatter characteristics to scatter at least some of the source light by converting the source light that has been absorbed in the source wavelength range and emitting the first interim light in the first interim wavelength range;

wherein the narrow production conversion material is defined by narrow scatter characteristics to scatter at least some of the source light by converting the source light that has been absorbed in the source wavelength range and emitting the second interim light in the second interim wavelength range; and

wherein the scattering performed by the wide production conversion material differs from the scattering performed by the narrow production conversion material.

40. A light converting device according to claim 22 wherein the source wavelength range is between 500 and 1300 nanometers.

23. A light converting device comprising:

an enclosure comprised of a bulk material;

a wide production conversion material located adjacent to at least part of the enclosure to convert a source light within a source wavelength range to a first interim light within a first interim wavelength range; and

a narrow production conversion material located adjacent to at least part of the enclosure to convert the source light within the source wavelength range to a second interim light within a second interim wavelength range;

wherein the first interim light and the second interim light are substantially included in a converted light;

wherein the first interim wavelength range and the second interim wavelength range are substantially included in a converted wavelength range;

wherein the wide production conversion material is defined by wide absorption characteristics and the narrow production conversion material is defined by narrow absorption characteristics;

wherein the wide production conversion material absorbs at least some of the source light and the narrow production conversion material absorbs at least some of the source light that differs from the source light absorbed by the wide production conversion material;

wherein the wide production conversion material absorbs a substantially negligible quantity of the second interim light;

wherein the narrow production conversion material absorbs a substantially negligible quantity of the first interim light;

wherein the wide production conversion material is defined by wide scatter characteristics to scatter at least some of the source light by converting the source light that has been absorbed in the source wavelength range and emitting the first interim light in the first interim wavelength range;

wherein the narrow production conversion material is defined by narrow scatter characteristics to scatter at least some of the source light by converting the source light that has been absorbed in the source wavelength range and emitting the second interim light in the second interim wavelength range;

wherein the scattering performed by the wide production conversion material differs from the scattering performed by the narrow production conversion material.

24. A light converting device according to claim 23 wherein the wide production conversion material includes a phosphor.

25. A light converting device according to claim 23 wherein the source light is converted to the first interim light through a Stokes shift of the source wavelength range to the first interim wavelength range.

26. A light converting device according to claim 23 wherein the source light is converted to the first interim light through an anti-Stokes shift of the source wavelength range to the first interim wavelength range.

27. A light converting device according to claim 23 wherein the narrow production conversion material includes a material that is selected from a group consisting of a fluorescent, luminescent, and phosphorescent material.

28. A light converting device according to claim 23 wherein the narrow production conversion material includes a quantum dot.

29. A light converting device according to claim 23 wherein the source light is converted to the second interim light through a Stokes shift of the source wavelength range to the second interim wavelength range.

30. A light converting device according to claim 23 wherein the source light is converted to the second interim light through an anti-Stokes shift of the source wavelength range to the second interim wavelength range.

31. A light converting device according to claim 23 wherein the wide production conversion material is included in a coating, at least part of the source light being converted by the coating.

32. A light converting device according to claim 31 wherein the coating is applied to at least one of the enclosure and the light source.

33. A light converting device according to claim 23 wherein the narrow production conversion material is included in a coating, at least part of the source light being converted by the coating.

34. A light converting device according to claim 33 wherein the coating is applied to at least one of the enclosure and the light source.

35. A light converting device according to claim 23 wherein the wide production conversion material is included in the bulk material of the enclosure.

36. A light converting device according to claim 23 wherein the narrow production conversion material is included in the bulk material of the enclosure.

37. A light converting device according to claim 23 wherein the source light is converted by the wide production conversion material and the narrow production conversion material substantially simultaneously.

38. A light converting device according to claim 23 wherein the source light is a monochromatic light.

39. A light converting device according to claim 23 wherein the source wavelength range is between 200 nanometers and 500 nanometers.

41. A light converting device according to claim 23 wherein the enclosure encloses at least part of a light source that produces the source light.

42. A light converting device according to claim 23 wherein the source light is emitted by a light emitting semiconductor device.

43. A method of converting a source light into a converted light using a light converting device that includes an enclosure comprised of a bulk material, a wide production conversion material located adjacent to at least part of the enclosure, and a narrow production conversion material located adjacent to at least part of the enclosure, the method comprising:

receiving the source light by the wide production conversion material and the narrow production conversion material;

converting the source light within a source wavelength range to a first interim light within a first interim wavelength range using the wide production conversion material; and

converting the source light within the source wavelength range to a second interim light within a second interim wavelength range using the narrow production conversion material;

wherein the first interim light and the second interim light are substantially included in a converted light;

wherein the first interim wavelength range and the second interim wavelength range are substantially included in the converted wavelength range of the converted light;

wherein the wide production conversion material is defined by wide absorption characteristics;

wherein the narrow production conversion material is defined by narrow absorption characteristics;

wherein the wide production conversion material absorbs at least some of the source light;

wherein the narrow production conversion material absorbs at least some of the source light that differs from the source light absorbed by the wide production conversion material;

wherein the wide production conversion material absorbs a substantially negligible quantity of the second interim light; and

wherein the narrow production conversion material absorbs a substantially negligible quantity of the first interim light.

44. A method according to claim 43 wherein the wide production conversion material includes a phosphor.

45. A method according to claim 43 further comprising converting the source light to the first interim light through a Stokes shift of the source wavelength range to the first interim wavelength range.

46. A method according to claim 43 further comprising converting the source light to the first interim light through an anti-Stokes shift of the source wavelength range to the first interim wavelength range.

47. A method according to claim 43 wherein the narrow production conversion material includes a material that is selected from a group consisting of a fluorescent, luminescent, and phosphorescent material.

48. A method according to claim 43 wherein the narrow production conversion material includes a quantum dot.

49. A method according to claim 43 further comprising converting the source light to the second interim light through a Stokes shift of the source wavelength range to the second interim wavelength range.

50. A method according to claim 43 further comprising converting the source light to the second interim light through an anti-Stokes shift of the source wavelength range to the second interim wavelength range.

51. A method according to claim 43 wherein the wide production conversion material is included in a coating, at least part of the source light being converted by the coating.

52. A method according to claim 43 wherein the coating is applied to at least one of the enclosure and the light source.

53. A method according to claim 43 wherein the narrow production conversion material is included in a coating, at least part of the source light being converted by the coating.

54. A method according to claim 53 wherein the coating is applied to at least one of the enclosure and the light source.

55. A method according to claim 43 wherein the wide production conversion material is included in the bulk material of the enclosure.

56. A method according to claim 43 wherein the narrow production conversion material is included in the bulk material of the enclosure.

57. A method according to claim 43 wherein the source light is converted by the wide production conversion material and the narrow production conversion material substantially simultaneously.

58. A method according to claim 43 wherein the source light is a monochromatic light.

59. A method according to claim 43 wherein the source wavelength range is between 200 nanometers and 500 nanometers.

60. A method according to claim 43 wherein the source wavelength range is between 500 and 1300 nanometers.

61. A method according to claim 43 wherein the enclosure encloses at least part of a light source that produces the source light.

62. A method according to claim 43 wherein the source light is emitted by a light emitting semiconductor device.

63. A method according to claim 43 wherein the wide production conversion material is defined by wide scatter characteristics to scatter at least some of the source light by converting the source light that has been absorbed in the source wavelength range and emitting the first interim light in the first interim wavelength range;

wherein the narrow production conversion material is defined by narrow scatter characteristics to scatter at least some of the source light by converting the source light that has been absorbed in the source wavelength range and emitting the second interim light in the second interim wavelength range; and

wherein the scattering performed by the wide production conversion material differs from the scattering performed by the narrow production conversion material.