Patent ID: 7649220

Claim:
A photodetector comprising: a substrate having first, second, and third photodiodes that generate first, second, and third photodiode output signals, respectively, each photodiode output signal being indicative of a light intensity incident on that photodiode; a first pigment filter layer overlying said first photodiode but not said second photodiode, said first pigment filter layer being transparent to light in a first band of wavelengths and opaque to light in a second band of wavelengths; a second pigment filter layer overlying said second photodiode, but not said first photodiode, said second pigment filter layer being transparent to light in said second band of wavelengths and opaque to light in said first band of wavelengths; a layer comprising said first and second pigment filter layers overlying said third photodiode; and an output circuit that combines said first and third photodiode output signals to provide a first corrected output signal and that combines said second and third photodiode output signals to provide a second corrected output signal.