Patent ID: 6992803
Filing Date: 2006-01-31
Classification: G01J

Abstract:
1. A primary color identification system for measuring color chromaticity coordinates of a plurality of red, green and blue light emitting diodes (LEDs) that generate a combined light, said system comprising: a filter located near said LEDs, so as to receive said combined light generated by said red, green and blue LEDs; said filter configured to provide signals corresponding to light received from each of said red, green and blue LEDs; said signals provided by said filter enabling measurement of chromaticity coordinates of said combined light; a processor coupled to said filter and configured to receive said signals provided by said filter; said processor further configured to generate control signals associated with each one of said plurality of red, green and blue LEDs, such that a desired light intensity from each of said LEDs is provided; a driver circuit coupled to said processor to receive said control signals, said driver circuit further coupled to said plurality of red, green and blue LEDs and configured to provide drive signals enabling said LEDs to produce said desired light intensity.