Blade of light luminaire

Patent metadata

Field	Value
Publication number	US-9395478-B2
Application number	US-201213984115-A
Country	US
Kind code	B2
Filing date	Feb 7, 2012
Priority date	Feb 8, 2011
Publication date	Jul 19, 2016
Grant date	Jul 19, 2016

Abstract

A luminaire comprising a rectangular waveguide is provided. The waveguide includes four sides and opposed planar surfaces. A light module directs light into only one of the sides at least. One of the planar surfaces includes a specular reflection surface directing light to exit through the opposed planar surface.

First claim

The invention claimed is:

1. A luminaire comprising a rectangular waveguide, said waveguide including four edges and opposed planar surfaces and being configured for installation with said opposed planar surfaces oriented horizontally, a light module directing light into only one of said edges, each of said planar surfaces emitting light, wherein said light is emitted selectively in a greater amount upwardly or downwardly.

2. The luminaire of claim 1 , wherein said waveguide has a thickness of less than 50 mm between opposed planar surfaces.

3. The luminaire of claim 1 wherein said light module includes a plurality of light emitting diodes (LEDs).

4. The luminaire of claim 1 wherein said rectangle is a square.

5. The luminaire of claim 1 wherein light is emitted substantially from only one planar surface.

6. The luminaire of claim 2 wherein the ratio of surface area of one planar surface to waveguide thickness is at least 5,000:1.

7. The luminaire of claim 1 including a mounting structure associated with the edge including said light module.

8. The luminaire of claim 7 wherein an edge opposed to said edge including said mounting structure is free floating in a mounted condition.

9. The luminaire of claim 7 wherein said mounting structure and said light module comprise an integral body.

10. The luminaire of claim 1 wherein light exits said planar surface diffusely.

11. The luminaire of claim 1 wherein at least one edge includes a reflector.

12. The luminaire of claim 4 wherein a first planar surface emits more light than the opposed planar surface.

13. A method for illuminating an area comprising providing a plurality of luminaire, each luminaire comprising a rectangular waveguide including four edges and opposed planar surfaces, each waveguide including a light module directing light into only one of the edges, each waveguide having total internal reflectance which distributes said light throughout the waveguide and a selected emission of light from one or both of said planar surfaces, and arranging at least a first of said luminaires in a vertical orientation and a second of said luminaires in a horizontal orientation.

14. The method of claim 13 wherein said first luminaire is mounted to a ceiling and said second luminaire is mounted to a wall.

15. The method of claim 13 wherein each luminaire has substantially the same length, width and thickness.

16. A luminaire comprising a rectangular waveguide, said waveguide including four edges and opposed planar surfaces, a light module directing light into only one of said edges, wherein light is directed to exit said waveguide from at least one planar surface within a cone angle of less than about 45°.

17. A luminaire comprising a rectangular waveguide, said waveguide including four edges and opposed planar surfaces, a light module directing light into only one of said edges, at least one of said planar surfaces emitting light, wherein said light is emitted selectively in a greater amount upwardly or downwardly and wherein light is emitted from at least one of said edges.

18. The method of claim 13 including a plurality of vertical luminaires and a plurality of horizontal luminaires.

19. The method of claim 16 wherein light is directed to exit said waveguide from each opposed planar surface within a cone angle of less than about 45°.

20. The luminaire of claim 1 wherein said light is emitted in a greater amount downwardly.

Assignees

• Fisher Simon
• Ling Oliver
• Ge Lighting Solutions Llc

Inventors

• Fisher Simon
• Ling Oliver

Classifications

• F21V5/004

  using microlenses · CPC title

• F21V7/0091

  using total internal reflection · CPC title

• F21V13/04

  the elements being reflectors and refractors {(for vehicle rear lights F21S43/40)} · CPC title

• G02B6/0081

  Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging · CPC title

• G02B6/009

  of the light source in the package (G02B6/0021 takes precedence) · CPC title