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COLOR TEMPERATURE ADJUSTING METHOD OF SOLID STATE LIGHT EMITTING DEVICE AND SOLID STATE LIGHT EMITTING DEVICE USING THE METHOD

  • US 20130169187A1
  • Filed: 11/14/2012
  • Published: 07/04/2013
  • Est. Priority Date: 12/28/2011
  • Status: Active Grant
First Claim
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1. A color temperature adjusting method of solid state light emitting device, comprising:

  • providing a main light source which emits main light of a first color temperature;

    providing an adjusting light source, wherein the adjusting light source comprises a plurality of red light sources, a plurality of green light sources and a plurality of blue light sources which alternately surround the main light source; and

    adjusting currents applied to each of the red, green and blue light sources of the adjusting light source to obtain an adjusting light, the adjusting light mixing with the main light of the main light source to obtain an outgoing light of a second color temperature;

    wherein the second color temperature is different from the first color temperature and wherein a chromaticity coordinate of the outgoing light is at a Plank'"'"'s curve on a CIE 1931 chromaticity coordinates chart.

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