Conformal OLED luminaire with color control

• US 8,430,530 B2
• Filed: 04/09/2010
• Issued: 04/30/2013
• Est. Priority Date: 04/09/2010
• Status: Active Grant

• Current Assignee: BOE Technology Group Co., Ltd.
• Original Assignee: General Electric Company
• Inventors: Aurongzeb, Deeder, Knapp, Thomas Alexander
• Primary Examiner(s): Alavi, Ali
• Application Number:
  US12/757,310
• Publication Number:
  US 20110249425A1
• Time in Patent Office: 1,117 Days
• Field of Search: 362/84, 362/249.03, 362/249.04, 362/249.07, 362/249.08
• US Class Current: 362/249.04
• CPC Class Codes: F21S 10/02 changing colors F21S10/002 - F21S10/007, F21S10/04 take precedence
• CPC Class Codes: F21S 6/005 with a lamp housing maintained at a distance from the floor or ground via a support, e.g. standing lamp for ambient lighting
• CPC Class Codes: F21S 8/06 by suspension
• CPC Class Codes: F21S 9/02 the power supply being a battery or accumulator
• CPC Class Codes: F21V 14/02 by movement of light sources in vehicle head lamps F21S41/657
• CPC Class Codes: F21V 33/0004 Personal or domestic articles
• CPC Class Codes: F21Y 2105/00 Planar light sources
• CPC Class Codes: F21Y 2105/10 comprising a two-dimensional array of point-like light-generating elements
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: F21Y 2115/15 Organic light-emitting diodes [OLED]

Abstract

A luminaire, such as a lamp assembly or a floor lamp, umbrella, or planar or sheet-like like light emitting surface includes a conforming mechanism for selectively curving the light emitting surface. A convex profile will diffuse light while a concave profile will concentrate light, it being intended that the surface can be conformable up to a five inch (5″) radius of curvature in either direction. The light panel portions may be of the same color, or may be different colors that will result in different mixing of the light when made from different colors.

Claims

1. A luminaire comprising:

an elongated flexible surface;

a solid state light emitting device mounted to the surface, the light emitting device including at least first and second panel portions, the first panel portion being conformable; and

a conforming mechanism for curving at least one of the first and second panel portions of the elongated flexible surface, the conforming mechanism includes first and second arms extending from a central region, the arms secured at distal ends to the flexible surface and selectively urged toward and away from one another to alter a curvature of the flexible surface.

2. The luminaire of claim 1 wherein the conforming mechanism selectively curves the first panel portion into one of a planar conformation or an arcuate conformation.

3. The luminaire of claim 1 wherein the conforming mechanism selectively curves the first panel portion from a first arcuate conformation to a second arcuate conformation having a greater degree of curvature than the first arcuate conformation.

4. The luminaire of claim 1 wherein one of the first and second solid state light emitting devices includes a light emitting diode (LED).

5. The luminaire of claim 4 wherein the LED includes multiple LEDs in the first panel portion enclosed by a translucent housing.

6. The luminaire of claim 1 wherein the first panel portion is conformed relative to the second panel portion.

7. The luminaire of claim 1 further comprising a thin diffuser overlying at least a portion of the first panel portion for directing light from an edge thereof.

8. The luminaire of claim 1 wherein the first and second solid state light emitting devices are organic light emitting devices (OLED).

9. The luminaire of claim 1 wherein the conforming mechanism includes a threaded member for selectively altering a curvature of the first light emitting device.

10. The luminaire of claim 1 further comprising a generally spherical-shaped support for the first panel portion.

11. The luminaire of claim 10 wherein the first color panel portion is centrally positioned between second panel portions disposed on either side thereof.

12. The luminaire of claim 11 wherein the first color panel portion emits blue light, and the second panel portions emit yellow light.

13. A luminaire comprising:

a flexible surface;

an organic light emitting device (OLED) mounted to the surface being conformable;

at least one member supporting a first portion of the flexible surface; and

an adjustable member supporting a second portion of the flexible surface and selectively moving the second portion relative to the first portion and imparting a curvature to the OLED wherein the adjustable member selectively advances and retracts the flexible surface through positive and negative curvatures.

14. The luminaire of claim 13 wherein the OLED is powered by a battery.

15. The luminaire of claim 13 wherein the adjustable member being positioned in a central region of the flexible surface.

16. The luminaire of claim 15 wherein at least one member includes multiple supports for mounting a perimeter of the OLED.

17. The luminaire of claim 15 wherein the flexible surface is an umbrella in which OLED portions are mounted on interior panels thereof.

18. The luminaire of claim 13 wherein the flexible surface has a predetermined non-planar conformation, and the at least one member and the adjustable member are pivotally connected in a generally x-shaped configuration.

19. A luminaire comprising:

at least first and second OLED devices, the first OLED device having a color temperature ranging from about 2500K to about 3500K and the second OLED device having a color temperature of about 5000K or greater; and

a DC driver for driving the OLEDs and maximizing control of optical intensity light distribution and color mixing;

wherein the power is less than about 4 watts.

20. The luminaire of claim 19 wherein the power is less than about 1 watt per OLED device.

21. The luminaire of claim 19 wherein the one of the first and second OLED devices is a blue light and the other of the first and second OLED devices is a yellow light.

22. The luminaire of claim 19 wherein the DC driver drives the OLED devices in series.

23. The luminaire of claim 19 further comprising controlling color by regulating power of a blue OLED.

24. The luminaire of claim 19 wherein the color temperature ranges from approximately 3500K to about 6200K.

25. The luminaire of claim 19 wherein the power applied is >

20 mw/in².