Solid state lighting components

Patent metadata

Field	Value
Publication number	US-10962199-B2
Application number	US-202016901624-A
Country	US
Kind code	B2
Filing date	Jun 15, 2020
Priority date	Apr 30, 2015
Publication date	Mar 30, 2021
Grant date	Mar 30, 2021

Abstract

Solid state lighting components are provided with improved color rendering, improved color uniformity, and improved directional lighting, and that are suitable for use in high output lighting applications and can be used in place of CDMH bulb lighting. Exemplary solid state lighting components include a substrate comprising a light emitter surface and or more light emitters disposed on and/or over the light emitter surface. Exemplary components include a light directing optic and/or a diffusing optic for mixing light. The light directing optic may be disposed at least partially around a perimeter of the light emitter surface. The diffusing optic may be disposed between portions of the light directing optic and spaced apart from the light emitter surface.

First claim

What is claimed is:

1. A solid state lighting component comprising:
a substrate;
one or more light emitters disposed over the substrate, wherein a surface area of the substrate that is occupied by the one or more light emitters defines a light emitter surface;
a light directing optic comprising a reflective surface disposed around the light emitter surface;
a diffusing optic disposed between portions of the light directing optic and over the one or more light emitters; and
a hollow region over the substrate, such that at least a portion of the diffusing optic is spaced a distance away from the light emitter surface;
wherein the hollow region comprises a hollow spacer, which comprises a color mixing chamber.

2. The component of claim 1 , wherein the distance is greater than one-half of a width of the light emitter surface.

3. The component of claim 1 , wherein the light directing optic comprises a reflector, and wherein the reflector is configured to provide light having a beam angle that is between approximately 20° and 30°.

4. The component of claim 1 , wherein the reflective surface is texturized.

5. The component of claim 1 , wherein the diffusing optic comprises a film, a disk, a sheet, a plate, a lens, a cone, a cover, a dome, or a three-dimensional structure having one or more walls.

6. The component of claim 1 , wherein the diffusing optic is twist or rotatably lockable to or within a component housing.

7. The component of claim 1 , wherein the color mixing chamber has a texturized inner surface.

8. The component of claim 1 , wherein the color mixing chamber is integrally formed with the diffusing optic.

9. The component of claim 1 , wherein the color mixing chamber comprises one or more vents for dissipating heat.

10. The component of claim 1 , wherein the color mixing chamber has an outer surface comprising one or more facets.

11. The component of claim 1 , wherein the hollow spacer is positioned between the light directing optic and the diffusing optic.

12. The component of claim 1 , wherein the light directing optic comprises a frustoconically shaped inner profile and wherein the diffusing optic comprises a domed shape.

13. The component of claim 12 , wherein the diffusing optic is only connected to the light directing optic.

14. A solid state lighting component comprising:
a substrate;
at least two light emitters disposed over the substrate, wherein a surface area of the substrate that is occupied by the one or more at least two light emitters defines a light emitter surface, and wherein a first light emitter of the at least two light emitters is configured to emit a first color of light, and a second light emitter of the at least two light emitters is configured to emit a second color of light;
a diffusing optic disposed over the at least two light emitters; and
a light directing optic configured for receiving and reflecting light that passes through the diffusing optic;
wherein the light directing optic is mounted to the solid state lighting component by attachment to the diffusing optic.

15. The component of claim 14 , wherein the solid state lighting component is configured to provide light with a beam angle of approximately 15° or more, approximately 20° or more, approximately 25° or more, approximately 30° or more, approximately 40° or more, or approximately 60° or more.

16. The component of claim 14 , wherein the component is configured to output a centered light beam that comprises a color rendering index (CRI) of approximately 80 CRI or more.

17. The component of claim 14 , wherein the diffusing optic is coaxially disposed with respect to the light directing optic.

18. The component of claim 14 , wherein the first color is primarily blue and the second color is primarily red.

19. The component of claim 14 , wherein the component is operable to output at least approximately 90 lumens per watt (LPW) or more at 30 Watts (W).

20. The component of claim 14 , wherein the component is operable to output at least approximately 120 lumens per watt (LPW) or more at 30 Watts (W).

21. The component of claim 14 , wherein the component is operable to output at least approximately 140 lumens per watt (LPW) or more at 30 Watts (W).

22. The component of claim 14 , wherein a centered beam candlepower is approximately 14,000 candela.

23. The component of claim 14 , wherein the diffusing optic comprises a substantially planar surface.

24. A solid state lighting component comprising:
a substrate;
one or more light emitters disposed over the substrate, wherein a surface area of the substrate that is occupied by the one or more light emitters defines a light emitter surface;
a light directing optic comprising a reflective surface disposed around the light emitter surface;
a diffusing optic, which is only connected to the light directing optic and is disposed between portions of the light directing optic and over the one or more light emitters; and
a hollow region over the substrate, such that at least a portion of the diffusing optic is spaced a distance away from the light emitter surface.

Assignees

• Cree Inc

Inventors

• Tudorica Florin A
• Hussell Christopher P
• Durkee John Wesley
• Andrews Peter Scott
• Cash Mark
• Randolph David

Classifications

• F21V23/008

  the casing being outside the housing of the lighting device · CPC title

• F21Y2115/30

  Semiconductor lasers · CPC title

• F21V23/005

  the substrate is supporting also the light source · CPC title

• F21V13/02

  Combinations of only two kinds of elements · CPC title

• F21V29/89

  Metals · CPC title