WAVELENGTH-CONVERTING STRUCTURE FOR A LIGHT SOURCE

• US 20130258637A1
• Filed: 03/31/2012
• Published: 10/03/2013
• Est. Priority Date: 03/31/2012
• Status: Abandoned Application

• Current Assignee: OSRAM Sylvania Inc. (Ams-Osram AG)
• Original Assignee: OSRAM Sylvania Inc. (Ams-Osram AG)
• Inventors: Lenef, Alan, Wang, Michael Dongxue
• Application Number:
  US13/436,846
• Publication Number:
  US 20130258637A1
• Time in Patent Office: Days
• US Class Current: 362/84
• CPC Class Codes: H01L 33/505 characterised by the shape, e.g. plate or foil

Abstract

A wavelength-converting structure for a light module including a solid-state light source. The wavelength-converting structure includes a plurality of apertures formed therein. The plurality of apertures may be configured to increase conversion efficiency of the wavelength-converting structure or color uniformity.

Claims

1. A light module comprising:

a solid-state light source configured to emit primary light from an emitting surface; and

a wavelength-converting plate comprising a wavelength-converting material for converting at least a portion of said primary light into a secondary light, said wavelength-converting plate having a bottom surface in opposed facing relationship to said emitting surface of said light source and a top surface for emitting said secondary light, said wavelength-converting plate further having a plurality of apertures formed therein.

2. The light module of claim 1 wherein said plurality of apertures comprise through holes extending between said top and bottom surfaces.

3. The light module of claim 2 wherein at least one through hole has a diameter different from at least one other through hole.

4. The light module of claim 1 wherein said plurality of apertures comprise blind holes in said wavelength-converting plate.

5. The light module of claim 4 wherein said blind holes are formed in said bottom surface of said wavelength-converting plate.

6. The light module of claim 4 wherein said blind holes are formed in said top surface of said wavelength-converting plate.

7. The light module of claim 1 wherein said wavelength-converting plate is positioned remotely from said light source.

8. The light source of claim 7 wherein a distance between said bottom surface of said wavelength-converting plate and said emitting surface of said light source is between about 0.1 mm and 3 mm.

9. The light source of claim 1 wherein at least one of said plurality of said apertures has a diameter between about 0.1 mm to 2 mm.

10. The light source of claim 1 wherein at least one of said plurality of said apertures has a diameter between about 0.5 mm to 1 mm.

11. The light module of claim 1 wherein at least one of said apertures contains an optically transparent material.

12. The light module of claim 11 wherein said optically transparent material contains light scattering particles.

13. The light module of claim 11 wherein said plurality of apertures comprise through holes extending between said top and bottom surfaces.

14. The light module of claim 12 wherein said plurality of apertures comprise through holes extending between said top and bottom surfaces.

15. The light module of claim 1 wherein at least one of said plurality of apertures is configured to allow said primary light to pass at least partially through said wavelength-converting plate without being imparted on a surface thereof.

16. The light module of claim 1 wherein at least a portion of a side wall of at least one of said plurality of apertures is textured.

17. A wavelength-converting plate for a light module including a solid-state light source configured to emit primary light, said wavelength-converting plate comprising:

a wavelength-converting material for converting at least a portion of said primary light into a secondary light, said wavelength-converting plate having a bottom surface in opposed facing relationship to said emitting surface of said light source and a top surface for emitting said secondary light, said wavelength-converting plate further having a plurality of apertures formed therein.

18. The wavelength-converting plate of claim 17 wherein said plurality of apertures are configured to increase interaction area between said primary light and said wavelength-converting material.

19. The wavelength-converting plate of claim 17 wherein each of said plurality of apertures are spaced equidistantly apart from one another.

20. The wavelength-converting plate of claim 17 wherein said plurality of apertures comprise through holes extending between said top and bottom surfaces.

21. The wavelength-converting plate of claim 20 wherein at least one through hole has a diameter different from at least one other through hole.

22. The wavelength-converting plate of claim 17 wherein said plurality of apertures comprise blind holes in said wavelength-converting plate.

23. The wavelength-converting plate of claim 22 wherein said blind holes are formed in said bottom surface of said wavelength-converting plate.

24. The light module of claim 22 wherein said blind holes are formed in said top surface of said wavelength-converting plate.

25. The light module of claim 17 wherein at least one of said plurality of apertures is configured to allow said primary light to pass at least partially through said wavelength-converting plate without being imparted on a surface thereof.