Patent ID: 7026769
Filing Date: 2006-04-11
Classification: H05B

Abstract:
1. A light source comprising: a light generator that generates a first light signal of a first wavelength and a first intensity that is set by a first control signal and a second light signal at a second wavelength and a second intensity that is set by a second control signal; a light monitor that generates a first monitor signal having an amplitude determined by said first intensity and a second monitor signal having an amplitude determined by said second intensity; a target signal generator having a port for receiving a target light signal, said target signal generator generating a first target signal having an amplitude indicative of a first target value and a second target signal having an amplitude indicative of a second target value from said target light signal; a feedback controller that generates said first and second control signals such that said first and second monitor signals have a fixed relationship to said first and second target signals, respectively.