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ILLUMINATION SOURCE, ILLUMINATION SYSTEM, AND DIMMING CONTROL METHOD FOR THE PRODUCTION OF DIFFERENT COLOUR TEMPERATURES

  • US 20090224693A1
  • Filed: 11/29/2005
  • Published: 09/10/2009
  • Est. Priority Date: 12/10/2004
  • Status: Abandoned Application
First Claim
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1. An illumination source capable of outputting illumination light at different color temperatures, comprising:

  • a first light emitting device operable to emit light in a first red;

    a second light emitting device operable to emit light in a second red that is different from the first red; and

    a third light emitting device operable to emit light in a different color from the first red and from the second red, anda fourth light emitting device operable to emit light in a different color from any of the first red, the second red, and the color of light emitted from the third light emitting device, whereinthe illumination light is outputted at different color temperatures by adjusting luminous intensity ratios of the first to fourth light emitting devices.

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