LIGHTING DEVICE AND METHOD OF LIGHTING

• US 20110170290A1
• Filed: 09/16/2009
• Published: 07/14/2011
• Est. Priority Date: 09/17/2008
• Status: Abandoned Application

• Current Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Hikmet, Rifat A.M., Van Bommel, Ties
• Application Number:
  US13/119,202
• Publication Number:
  US 20110170290A1
• Time in Patent Office: Days
• US Class Current: 362/235
• CPC Class Codes: H05B 35/00 Electric light sources using a combination of different types of light generation
• CPC Class Codes: H05B 45/20 Controlling the colour of the light
• CPC Class Codes: H05B 47/155 Coordinated control of two or more light sources

Abstract

The invention relates to a lighting device (1) comprising at least one laser device (4) for generating an aligned laser beam (5), at least one LED device for generating light emission (3) and at least one optical element (6), which is in the optical path of the laser beam (5) and converts the laser beam (5) into structured laser light (8), wherein the arrangement of the laser device (4), the LED device and the optical element (6) enables a superposition of the light emission (3) and the laser light (8). The invention further relates to a corresponding method of lighting.

Claims

1. A low intensity lighting device, comprising:

at least one laser device for generating an aligned laser beam,

at least one LED device for generating light emission and

at least one optical element, which is in the optical path of the laser beam and which is adapted for converting the laser beam into structured laser light,

wherein the arrangement of the laser device, the LED device and the optical element enables a superposition of the light emission and the laser light.

2. The lighting device according to claim 1, wherein the optical element is an optical wave guide for the laser beam.

3. The lighting device according to claim 1, wherein the optical element comprises out-coupling structures and/or out-coupling elements, which enables out-coupling of a portion of the laser beam, respectively, wherein the portions form the laser light.

4. The lighting device according to claim 2, wherein the optical wave guide is oriented in a plane which is parallel to a light emitting surface of the LED device.

5. The lighting device according to claim 2, wherein the optical wave guide is a planar optical wave guide.

6. The lighting device according to claim 1, wherein the optical element comprises at least one reflector to elongate the optical path of the laser beam within the optical element.

7. The lighting device according to claim 1, wherein the light emission trans-illuminates the optical element or the laser light trans-illuminates the LED device.

8. The lighting device according to claim 1, wherein the laser beam is oriented perpendicularly to a main component of the light emission.

9. The lighting device according to claim 1, wherein the laser light shows a component which is oppositely oriented to a main component of the light emission.

10. The lighting device according to claim 1, wherein the lighting device further comprises an optical element wheel for bringing one of the optical elements at a time into the optical path of the laser device.

11. The lighting device according to claim 1, wherein the LED device is an OLED device.

12-15. -15. (canceled)