Patent ID: 7513671

Claim:
A light source for generating light having a perceived color that can be varied, said light source comprising: a plurality of sets of LEDs, said plurality of sets comprising: a first monochrome set of LEDs comprising a plurality of monochrome LEDs emitting light of a first color; a second monochrome set of LEDs comprising a plurality of monochrome LEDs emitting light of a second color; a white set of LEDs comprising a plurality of LEDs emitting white light; a mixing device that combines light from said plurality of sets of LEDs to produce a composite light having a perceived color; a plurality of current drivers, said plurality of current drivers comprising: a first current driver supplying current to said first monochrome set of LEDs; a second current driver supplying current to both said second monochrome set of LEDs and said white set of LEDs; a controller controlling said plurality of current drivers in response to an input signal from a source external to said light source, said controller maintaining said perceived color at a point determined by said input signal.