Light emitting diode primary optic for beam shaping

• US 8,931,929 B2
• Filed: 07/09/2012
• Issued: 01/13/2015
• Est. Priority Date: 07/09/2012
• Status: Active Grant

• Current Assignee: Creeled Incorporated
• Original Assignee: CREE Incorporated (Wolfspeed, Inc.)
• Inventors: Tarsa, Eric, Hansen, Monica, Keller, Bernd
• Primary Examiner(s): Alavi, Ali
• Application Number:
  US13/544,662
• Publication Number:
  US 20140009932A1
• Time in Patent Office: 918 Days
• Field of Search: 362/311.01, 362/311.02, 362/311, 362/311.09
• US Class Current: 362/311.02
• CPC Class Codes: F21K 9/233 specially adapted for generating a spot light distribution, e.g. for substitution of reflector lamps
• CPC Class Codes: F21S 8/026 intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling
• CPC Class Codes: F21V 13/04 the elements being reflectors and refractors for vehicle rear lights F21S43/40
• CPC Class Codes: F21V 29/74 with fins or blades
• CPC Class Codes: F21V 7/0008 providing for indirect lighting
• CPC Class Codes: F21V 7/005 with an elongated shape to cooperate with linear light sources
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H01L 33/54 having a particular shape

Abstract

LED components are described having primary optics provide improved LED component emission characteristics. Light fixtures are also described that utilize the LED components to provide improved light fixture emissions. One LED component according to the present invention comprises an LED chip emitting an LED chip emission pattern. A primary optic is included directly on the LED chip with LED light from the LED chip passing through the primary optic. The primary optic shapes the LED emission pattern into an LED component emission pattern with the LED component emission pattern being broader than the LED chip emission pattern.

Claims

1. A light emitting diode (LED) component, comprising:

an LED chip emitting an LED chip emission pattern; and

a primary optic directly on said LED chip with LED light from said LED chip passing through said primary optic, said primary optic shaping said LED emission pattern into an LED component emission pattern, said LED component emission pattern being broader than the LED chip emission pattern.

2. The LED component of claim 1, wherein said LED chip emission pattern is a Lambertian type pattern.

3. The LED component of claim 1, wherein said LED component emission pattern is a batwing emission pattern.

4. The LED component of claim 1, wherein said LED component emission pattern comprises two peak emissions.

5. The LED component of claim 4, wherein said LED component emission pattern further comprises two secondary peak emissions.

6. The LED component of claim 1, wherein said primary optic comprises a cylindrical shape.

7. The LED component of claim 1, wherein said primary optic comprises a concave portion.

8. The LED component of claim 1, wherein said primary optic comprises a top concave portion.

9. The LED component of claim 1, wherein said primary optic comprises a conical shaped top concave portion.

10. The LED component of claim 1, wherein said primary optic is hemispheric shaped and comprises a top concave portion.

11. The LED component of claim 1, wherein said primary optic comprises a slumped hemispheric shape.

12. A light emitting diode (LED) component, comprising:

a submount;

an LED chip on said submount; and

a primary optic directly on said LED chip with LED light from said LED chip passing through said primary optic, said primary optic shaping said LED light into a batwing-type emission pattern.

13. The LED component of claim 12, wherein said batwing type emission pattern comprises two peak emissions.

14. The LED component of claim 13, wherein said batwing type emission pattern further comprises two secondary peak emissions.

15. The LED component of claim 12, wherein said primary optic comprises a cylindrical shape.

16. The LED component of claim 12, wherein said primary optic comprises a concave portion.

17. The LED component of claim 12, wherein said primary optic comprises a top concave portion.

18. The LED component of claim 12, wherein said primary optic comprises a conical shaped top concave portion.

19. The LED component of claim 12, wherein said primary optic is hemispheric shaped and comprises a top concave portion.

20. The LED component of claim 12, wherein said primary optic comprises a slumped hemispheric shape.

21. A light emitting diode (LED) component, comprising:

a submount;

an LED chip on said submount; and

a primary optic directly on said LED chip with LED light from said LED chip passing through said primary optic, said primary optic comprising a top concave portion.

22. The LED component of claim 21, wherein said LED light emits in an LED chip emission pattern wherein said primary optic shapes said LED emission pattern into an LED component emission pattern, said LED component emission pattern being broader than the LED chip emission pattern.

23. The LED component of claim 22, wherein said LED chip emission pattern is a Lambertian type pattern.

24. The LED component of claim 22, wherein said LED component emission pattern is a batwing emission pattern.

25. The LED component of claim 22, wherein said LED component emission pattern comprises two peak emissions.

26. The LED component of claim 22, wherein said LED component emission pattern further comprises two secondary peak emissions.

27. The LED component of claim 21, wherein said primary optic comprises a cylindrical shape.

28. The LED component of claim 21, wherein said top concave portion is conical shaped.

29. The LED component of claim 21, wherein said primary optic is hemispheric shaped and comprises a top concave portion.

30. The LED component of claim 21, wherein said primary optic comprises a slumped hemispheric shape.

31. The LED component of claim 21, wherein said LED chip is in electrical contact with said submount.

32. A light fixture, comprising:

a plurality of light emitting diode (LED) components at least some of which comprise;

an LED chip emitting an LED chip emission pattern; and

a primary optic directly on said LED chip with LED light from said LED chip passing through said primary optic, said primary optic shaping said LED emission pattern so that emission pattern of said LED component is broader than the LED chip emission pattern.

33. The light fixture of claim 32, further comprising an emission surface, wherein said LED components emit directly on said emission surface.

34. The light fixture claim 32, comprising a troffer-style light fixture.

35. The LED component of claim 32, wherein said LED chip emission pattern is a Lambertian type pattern and said LED component emission pattern is a batwing emission pattern.

36. The LED component of claim 32, wherein said LED component emission pattern comprises two peak emissions.

37. The LED component of claim 36, wherein said LED component emission pattern further comprises two secondary peak emissions.

38. The LED component of claim 32, wherein said primary optic comprises a cylindrical shape a concave portion.

39. The LED component of claim 38, wherein said concave portion has comprises a conical shape.

40. The LED component of claim 32, wherein said primary optic is hemispheric shaped and comprises a top concave portion.

41. The LED component of claim 32, wherein said primary optic comprises a slumped hemispheric shape.

42. The light fixture of claim 32, further comprising an emission surface, wherein said LED components emit indirectly on said emission surface.

43. The light fixture claim 42, comprising a troffer-style light fixture.

44. The light fixture of claim 32, comprising a display.

45. The light fixture of claim 32, comprising an LED bulb.