Patent ID: 9173266
Filing Date: 2015-10-27
Classification: F21Y,H05B

Abstract:
1. An illumination apparatus comprising: a first light-emitting device for emitting a light having a first wavelength; a second light-emitting device for emitting a light having a second wavelength; and a third light-emitting device for emitting a light having a third wavelength to be selectively mixed with the light having the first wavelength or the light having the second wavelength to form a white light represented by a chromaticity coordinate point substantially located on a Black Body Locus on a CIE chromaticity diagram; wherein a color of the light having the third wavelength is determined by a linear relationship between corresponding coordinate points which represent the light having the first wavelength and a white light having a first color temperature on the CIE chromaticity diagram, and by a linear relationship between corresponding coordinate points which represent the light having the second wavelength and a white light having a second color temperature on the CIE chromaticity diagram.