Luminaire with optical modifier

Patent metadata

Field	Value
Publication number	US-10146002-B2
Application number	US-201415022552-A
Country	US
Kind code	B2
Filing date	Sep 17, 2014
Priority date	Sep 17, 2013
Publication date	Dec 4, 2018
Grant date	Dec 4, 2018

Abstract

The present technology relates to luminaires including light-emitting elements (LEEs), a luminaire module, and at least one optical modifier, where the optical modifier is arranged relative to the luminaire module to receive a fraction of light emitted by the LEEs.

First claim

What is claimed is:

1. A luminaire comprising:
one or more luminaire modules, each module comprising:
one or more light-emitting elements (LEEs) disposed on one or more substrates and adapted to emit light in an emission angular range;
one or more optical couplers positioned to receive a portion of the light emitted by corresponding one or more LEEs in the emission angular range and adapted to at least partially collimate the received light within a forward angular range;
a light guide having an input end and an output end, and planar side surfaces extending from the input end to the output end, the side surfaces being shaped to guide light received from the one or more optical couplers within the forward angular range at the input end of the light guide to the output end of the light guide; and
an optical extractor adapted to receive the guided light from the output end of the light guide, the optical extractor having a first redirecting surface, the first redirecting surface of the optical extractor being adapted to reflect at least a portion of the guided light and provide redirected light in a first backward angular range opposing the forward angular range; and

a first optical modifier adapted to receive a first fraction of the light that is emitted by the one or more LEEs in the emission angular range, the first optical modifier having one or more reflective surfaces shaped to output the received light along a first lateral angular range.

2. The luminaire of claim 1 , further comprising a second optical modifier, wherein the second optical modifier is adapted to receive a second fraction of the light emitted by the one or more LEEs in the emission angular range, the second optical modifier having one or more reflective surfaces shaped to output the received light along a second lateral angular range opposing the first lateral angular range.

3. The luminaire of claim 2 , wherein at least a portion of the one or more reflective surfaces of at least one of the first or second optical modifiers is specular reflective.

4. The luminaire of claim 2 , wherein at least one of the first or second optical modifiers comprises a solid material, and at least a portion of the received light is reflected via TIR.

5. The luminaire of claim 1 , further comprising a first tertiary optic having a first reflective surface configured to reflect at least a portion of light that is redirected by the optical extractor in the first backward angular range, the reflected light being provided at least in part within the forward angular range.

6. The luminaire of claim 5 , wherein the first tertiary optic comprises a second reflective surface opposing the first reflective surface, the second reflective surface being configured to reflect at least a portion of the light output by the first optical modifier.

7. The luminaire of claim 6 , wherein at least one of the first or second reflective surfaces of the first tertiary optic is diffuse reflective.

8. The luminaire of claim 6 , wherein at least one of the first or second reflective surfaces of the first tertiary optic is specular reflective.

9. The luminaire of claim 6 , wherein at least one of the first or second reflective surfaces of the first tertiary optic is perforated.

10. The luminaire of claim 6 , wherein at least one of the first or second reflective surfaces of the first tertiary optic is semi-transparent.

11. The luminaire of claim 2 , wherein the optical extractor comprises a second redirecting surface, the second redirecting surface of the optical extractor being adapted to reflect at least a portion of the light received at the optical extractor and provide redirected light in a second backward angular range, wherein the second backward angular range is on an opposite side of an optical axis of the light guide relative to the first backward angular range.

12. The luminaire of claim 11 , further comprising a second tertiary optic having a first reflective surface configured to reflect at least a portion of light that is redirected by the optical extractor in the second backward angular range, the reflected light being provided at least in part within the forward angular range.

13. The luminaire of claim 12 , wherein the second tertiary optic comprises a second reflective surface opposing the first reflective surface, the second reflective surface being configured to reflect at least a portion of the light output by the second optical modifier.

14. The luminaire of claim 13 , wherein at least one of the first or second reflective surfaces of the second tertiary optic is diffuse reflective.

15. The luminaire of claim 13 , wherein at least one of the first or second reflective surfaces of the second tertiary optic is specular reflective.

16. The luminaire of claim 13 , wherein at least one of the first or second reflective surfaces of the second tertiary optic is perforated.

17. The luminaire of claim 13 , wherein at least one of the first or second reflective surfaces of the second tertiary optic is semi-transparent.

18. The luminaire of claim 1 , wherein the light guide comprises a solid transparent material and the side surfaces are configured to guide the light via TIR.

19. The luminaire of claim 1 , wherein the light guide is hollow and the side surfaces are reflectors configured to guide the light via specular reflection.

Assignees

• Quarkstar Llc

Inventors

• Lerman Louis
• York Allan Brent
• Schinagl Ferdinand
• Dau Wilson
• Stormberg Hans Peter

Classifications

• G02B6/0045

  by shaping at least a portion of the light guide · CPC title

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title

• G02B6/0085

  Means for removing heat created by the light source from the package · CPC title

• F21Y2103/10

  comprising a linear array of point-like light-generating elements · CPC title

• G02B6/0035

  provided on the surface of the light guide or in the bulk of it · CPC title