Patent ID: 9655196
Date: 2017-05-16
CPC Classifications: F21K,F21S,F21Y,H05B

Claim:
1. A color temperature adjusting method of a solid state light emitting device, comprising: providing a plurality of main light sources, each of the plurality of main light sources being a blue light source covered by a yellow phosphor; 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 alternately surrounding the plurality of main light sources; adjusting currents applied to each of the plurality of main light sources to obtain a main light having a first color temperature; 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 plurality of main light sources 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.