Patent ID: 7619193

Claim:
A control system for a LED luminary including a plurality of LED light sources of multiple colors for producing a mixed color light, the control system comprising: means for controlling the LED light sources in accordance with a difference between first set point values representing a desired light output and first control data provided by at least one optical sensor responsive to a property of the light produced by the LED light sources; means for compensating said first set point values in accordance with second control data provided by a temperature sensor responsive to the temperature of said optical sensor(s), wherein said LED light sources are further controlled in accordance with second set point values representing a desired mixed color output; and means for calculating the temperature of each LED light source and a temperature of said optical sensors, from a temperature of a heat sink measured by the temperature sensor coupled to the heat sink, the heat sink accommodating said LED light sources and the optical sensor(s), wherein the calculated LED light source temperatures are included in said second control data, and said second set point values are compensated in accordance with said calculated LED light source temperatures.