IP Library Granted Patent US 10,544,913
Granted Patent B2
US 10,544,913 · App. 15/617,198 · Granted Jan 28, 2020

LED wall-wash light fixture

Inventors: Dave Goelz (Milwaukee, WI); John Andre Adams (Cary, NC); Zhong Xie (Fishers, IN)
Assignee: Ideal Industries Lighting LLC
F21S8/026F21V29/77F21Y2115/10
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Quick Facts
Patent No.
US 10,544,913
App. No.
15/617,198
Granted
Jan 28, 2020
Kind
B2
Abstract

A LED light fixture includes an LED assembly that emits light when energized through an electrical path. An inner optic is positioned to receive the light. The inner optic comprises a lens that emits the light from the inner optic with a wide beam angle. A reflector is positioned to receive the light emitted from the inner optic. An inner reflector is positioned to asymmetrically reflect the light from the inner optic relative to the reflector.

Claims (44)

1. A LED light fixture comprising:

at least one LED operable to emit light when energized through an electrical path;

an inner optic positioned to receive the light, the inner optic comprising a lens for emitting the light from the inner optic;

a reflector positioned to receive the light emitted from the inner optic; and

an inner reflector positioned to asymmetrically reflect the light from the inner optic relative to the reflector, wherein the inner optic comprises a mixing chamber.

2. The LED lighting device of claim 1 wherein the lens is diffusive.

3. The LED lighting device of claim 1 wherein the lens emits light with a beam angle of between 30 and 65 degrees.

4. The LED lighting device of claim 1 wherein the reflector comprises a first reflective surface and a second reflective surface.

5. The LED lighting device of claim 4 wherein the second reflective surface reflects light asymmetrically relative to the reflector.

6. The LED lighting device of claim 4 wherein the inner reflector is positioned opposite the second reflective surface.

7. The LED lighting device of claim 1 wherein the inner reflector is positioned at least partially over the lens.

8. The LED lighting device of claim 7 wherein the inner reflector covers approximately 40-60% of the lens.

9. The LED lighting device of claim 4 wherein the inner reflector comprises a reflective surface that faces the lens.

10. The LED lighting device of claim 9 wherein the inner reflector comprises a non-reflective outside surface.

11. The LED lighting device of claim 9 wherein the inner reflector reflects light to the second reflective surface.

12. The LED lighting device of claim 1 wherein a keyed connection orients the inner reflector relative to the reflector.

13. The LED lighting device of claim 4 wherein the inner reflector reflects light toward the second reflective surface.

14. The LED lighting device of claim 4 wherein the inner reflector reflects light asymmetrically relative to the reflector.

15. The LED lighting device of claim 4 wherein the inner reflector reflects light asymmetrically toward a bottom of an adjacent surface and the reflector reflects light asymmetrically toward a top of the adjacent surface.

16. A LED light fixture comprising:

at least one LED operable to emit light when energized through an electrical path;

an inner optic positioned to receive the light, the inner optic comprising a lens for emitting the light from the inner optic generally in a first direction along a longitudinal axis of the light fixture;

an outer reflector comprising a first reflective surface and a second reflective surface positioned to receive the light emitted from the inner optic where the second reflective surface is arranged opposite to the first reflective surface transversely to the longitudinal axis of the light fixture such that light is reflected asymmetrically from the outer reflector; and

an inner reflector positioned inside of and surrounded by the outer reflector, wherein the inner reflector reflects a portion of the light emitted from the inner optic and redirects the portion of the light in a second direction that is substantially transverse to the longitudinal axis of the light fixture toward the second reflective surface and away from the first reflective surface such that the portion of the light emitted from the inner optic reflects off of the second reflective surface.

17. The LED lighting device of claim 16 wherein the lens emits light with a beam angle of between 30 and 65 degrees.

18. The LED lighting device of claim 16 wherein the inner reflector is positioned opposite the second reflective surface.

19. The LED lighting device of claim 16 wherein the inner reflector is positioned at least partially over the lens.

20. The LED lighting device of claim 19 wherein the inner reflector covers approximately 40-60% of the lens.

21. A LED light fixture comprising:

at least one LED operable to emit light when powered through an electrical path;

an inner optic positioned to receive the light, the inner optic comprising a reflector and a lens for emitting the light from the inner optic, the lens comprising a first diffusive portion, a second diffusive portion and a transition portion between the first diffusive portion and the second diffusive portion, the first diffusive portion being more diffusive than the second diffusive portion and the transition portion being less diffusive than the first diffusive portion and more diffusive than the second diffusive portion wherein the transition portion comprises interdigitated diffusive portions;

a reflector positioned to receive the light emitted from the inner optic.

22. The LED lighting device of claim 21 wherein the lens emits light asymmetrically.

23. A LED light fixture comprising:

at least one LED operable to emit light when powered through an electrical path;

an inner optic positioned to receive the light, the inner optic comprising a lens for emitting the light from the inner optic, the lens comprising a first diffusive portion, a second diffusive portion and a transition portion between the first diffusive portion and the second portion, the first diffusive portion being more diffusive than the second diffusive portion and the transition portion being less diffusive than the first diffusive portion and more diffusive than the second diffusive portion wherein the transition portion comprises interdigitated diffusive portions;

a reflector positioned to receive the light emitted from the inner optic; and

an inner reflector positioned to asymmetrically reflect the light from the inner optic relative to the reflector.

24. A LED light fixture comprising:

at least one LED operable to emit light when energized through an electrical path;

an inner optic positioned to receive the light, the inner optic comprising a reflective surface and a lens for emitting the light from the inner optic with a beam angle of between approximately 30 and 65 degrees, the at least one LED being positioned to a first side of the lens;

a reflector positioned to receive the light emitted from the inner optic; and

an inner reflector positioned to asymmetrically reflect the light from the inner optic relative to the reflector, wherein the inner reflector is positioned to a second side of the lens opposite the first side of the lens to receive a portion of the light transmitted through the lens, wherein the inner reflector is positioned at least partially over the lens and covers approximately 40 to 60% of the lens such that the light is reflected directionally to the reflector.

25. The LED light fixture of claim 21 , wherein the reflector comprises a first reflective surface and a second reflective surface.

Assignments (4)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 22, 2026
From: LUMEN ACQUISITION HOLDINGS, LLC
To: LED-IP MANAGEMENT, LLC
Reel/Frame 075624/0358 →
SECURITY INTEREST Recorded Sep 13, 2023
From: IDEAL INDUSTRIES LIGHTING LLC
To: FGI WORLDWIDE LLC
Reel/Frame 064897/0413 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 20, 2019
From: CREE, INC.
To: IDEAL INDUSTRIES LIGHTING LLC
Reel/Frame 050405/0240 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 1, 2017
From: GOELZ, DAVE; ADAMS, JOHN ANDRE; XIE, ZHONG
To: CREE, INC.
Reel/Frame 043151/0505 →
Continuity (1)
Related Publication 20180356049A1 · Dec 13, 2018