Luminaire for emitting directional and nondirectional light

• US 10,180,521 B2
• Filed: 11/09/2015
• Issued: 01/15/2019
• Est. Priority Date: 11/07/2014
• Status: Active Grant

• Current Assignee: Axis Lighting Incorporated, Korrus Incorporated (MKD Electric, Inc.)
• Original Assignee: Axis Lighting Incorporated, Soraa, Inc.
• Inventors: Parker, Jeffery Robert, Shum, Frank, Sun, Yupin, Peifer, Don, Yaphe, Howard, Caluori, Giuseppe, Miles, Andrew, Mier-Langner, Alejandro
• Primary Examiner(s): Tso, Laura
• Application Number:
  US14/936,371
• Publication Number:
  US 20160131331A1
• Time in Patent Office: 1,163 Days
• Field of Search: 36231102
• CPC Class Codes: F21S 8/00 Lighting devices intended for fixed installation F21S9/00, F21S10/00 take precedence; using a string or strip of light sources F21S4/00
• CPC Class Codes: F21S 8/06 by suspension
• CPC Class Codes: F21Y 2105/00 Planar light sources
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: G02B 6/0001 specially adapted for lighting devices or systems lighting or signalling on vehicles using light guides B60Q1/00; lighting devices for vehicle dashboards B60Q3/10; lighting devices for vehicle interior using light guides B60Q3/62; lighting devices mounted on the vehicle rear part using light guides F21S43/235; measuring arrangements having light conducting pointers G01D13/265; illumination of liquid crystal displays G02F1/1336; illuminated signs G09F13/00
• CPC Class Codes: G02B 6/002 by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
• CPC Class Codes: G02B 6/0045 by shaping at least a portion of the light guide

Abstract

An LED luminaire comprising: at least one directional light-emitting element configured to emit directional light from the luminaire; at least one nondirectional light-emitting element configured to emit non-directional light from the luminaire, the at least one nondirectional light-emitting element being optically coupled to the at least one directional light-emitting element; and at least one LED light source for emitting light and being optically coupled to at least one of the at least one directional light-emitting element or the at least one nondirectional light-emitting element.

Claims

1. An LED luminaire comprising:

at least one LED light source for emitting light rays;

at least one directional light-emitting element optically coupled to said at least one LED light source to receive at least a portion of said light rays and being configured to emit directional light directly from said luminaire;

at least one waveguide optically coupled to said at least one LED light source to receive at least a portion of said light rays, wherein said at least one waveguide is optically coupled to said at least one LED light source through said at least one directional light-emitting element; and

at least one nondirectional light-emitting element optically coupled to said at least one waveguide and being configured to emit non-directional light.

2. The LED luminaire of claim 1, wherein said at least one waveguide surrounds said directional light-emitting element.

3. The LED luminaire of claim 1, wherein said at least one waveguide comprises at least two waveguides extending in opposite directions from said at least one directional light-emitting element.

4. The LED luminaire of claim 1, further comprising a discrete directional light-emitting element.

11. The LED luminaire of claim 1, wherein said at least one LED light source comprises a plurality of LED light sources.

12. The LED luminaire of claim 11, wherein said at least one directional light-emitting element comprises a plurality of directional light-emitting elements, wherein each directional light-emitting element of said plurality of directional light-emitting elements is optically coupled to one of said plurality of LED light sources.

13. The LED luminaire of claim 1, wherein said directional light has one correlated color temperature (CCT), value and said non-directional light has a different CCT value.

14. The LED luminaire of claim 1, wherein said at least one nondirectional light-emitting element is integral with said at least one waveguide.

15. The LED luminaire of claim 1, further comprising at least one additional directional light-emitting element optically connected to said waveguide.

16. The LED luminaire of claim 1, further comprising a configurable lens disposed over a light-emitting surface of said directional light-emitting element to adjust the direction of said directional light.

5. An LED luminaire comprising:

at least one LED light source for emitting light rays;

at least one directional light-emitting element optically coupled to said at least one LED light source to receive at least a portion of said light rays and being configured to emit directional light from said luminaire;

at least one waveguide optically coupled to said at least one LED light source to receive and guide at least said portion of said light rays to said directional light-emitting element such that said portion of said light rays are internally reflected in said waveguide at least once, wherein said at least one directional light-emitting element is optically coupled to said at least one LED light source through said at least one waveguide; and

at least one nondirectional light-emitting element optically coupled to said at least one waveguide and being configured to emit non-directional light.

6. The LED luminaire of claim 5, wherein said at least one directional light-emitting element is integral with said at least one waveguide.

7. The LED luminaire of claim 6, wherein said at least one directional light-emitting element is defined on a surface of said at least one waveguide.

8. The LED luminaire of claim 7, wherein said at least one directional light-emitting element is defined on one surface of said at least one waveguide, and said at least one nondirectional light-emitting element is defined on another surface of said at least one waveguide.

9. The LED luminaire of claim 5, wherein said at least one waveguide comprises at least two waveguide.

10. The LED luminaire of claim 9, wherein said at least two waveguide are hinged.