Patent ID: 8158916
Filing Date: 2012-04-17
Classification: H05B,Y02B

Abstract:
1. A method for controlling color generation in a light source for emitting light, the light source comprising a plurality of colored light-emitting elements each configured to output a corresponding colored light, the method comprising: determining nominal values for the colored light output by each of the colored light-emitting elements that result in the light emitted by the light source having a target color point; detecting the light emitted by the light source and generating therefrom a detection signal; generating driving signals based on the detection signal and the target color point, and providing the driving signals to the colored light-emitting elements; and individual signature modulating the driving signal for each of the light elements with a corresponding signature; wherein the detecting step comprises demodulating the detection signal into a measured flux signal, and correlating the measured flux signal with each of the signatures to extract an actual value of the colored light output by each of the colored light-emitting elements; the method further comprising: