LIGHTING DEVICE

• US 20110194271A1
• Filed: 10/02/2009
• Published: 08/11/2011
• Est. Priority Date: 10/09/2008
• 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: Kurt, Ralph, Gu, Wen, Van As, Marco
• Application Number:
  US13/122,747
• Publication Number:
  US 20110194271A1
• Time in Patent Office: Days
• US Class Current: 362/11
• CPC Class Codes: F21K 9/00 Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
• CPC Class Codes: G03B 15/03 Combinations of cameras with lighting apparatus; Flash units

Abstract

It is presented a lighting device (2) for motion picture recording systems, e.g. television recording systems (1). The lighting device (2) comprises at least three solid state light sources (11-1, 11-2, 11-3, 11-4). At least a first (11-1) of the light sources has a peak emissive wavelength between 415 nm and 435 nm and a spectral width between 0.5 nm and 50 nm.

Claims

1. A lighting device for a motion picture recording system, the lighting device comprising:

at least three Solid State Lighting (SSL) sources, wherein at least a first of said at least three SSL sources has a peak emissive wavelength within a blue spectrum and a spectral width between 0.5 nm and 50 nm, wherein the SSL sources are individually tunable such that a wavelength combination from said at least three SSL sources is selected to reproduce the colors of a scene captured by the motion picture recording system.

2. The lighting device according to claim 18, wherein said at least first SSL source has a peak emissive wavelength at 425 nm.

3. The lighting device according to claim 1, wherein said at least first SSL source has a spectral width between 10 nm and 45 nm.

4. The lighting device according to claim 3, wherein said at least first SSL source has a spectral width of 25 nm.

5. The lighting device according to claim 1, wherein at least a second SSL source of said at least three SSL sources has a peak emissive wavelength between 592 nm and 606 nm.

6. The lighting device according to claim 1, wherein at least a third SSL source of said at least three SSL sources has a peak emissive wavelength between 526 nm and 538 nm.

7. The lighting device according to claim 5, wherein said at least second SSL source has a 600 nm peak emissive wave length.

8. The lighting device according to claim 6, wherein said at least third SSL source has a peak emissive wavelength of 530 nm.

9. The lighting device according to claim 1, wherein at least one of said at least three SSL sources comprises an LED or a laser diode.

10. The lighting device according to claim 9, wherein said LED comprises a phosphor converted light source.

11. The lighting device according to claim 1, further comprising at least one white light SSL source.

13. The lighting device according to claim 9, wherein said laser diode has a peak emissive wavelength in the range of 415-435 nm.

14. The lighting device according to claim 1, wherein a color temperature of said at least three SSL sources is 3000 K.

15. The lighting device according to claim 1, wherein a color temperature of said at least three SSL sources is 5000 K.

17. The lighting device according to claim 1, wherein the SSL sources are tunable in accordance with a camera setting of a camera of the motion picture recording system.

18. The lighting device according to claim 1, wherein said at least first SSL source has a peak emissive wavelength between 415 nm and 435 nm.

12. (canceled)

16. (canceled)