Patent ID: 7319298

Claim:
A luminaire system for generating light of a desired chromaticity and luminous flux output, the luminaire system comprising: (a) one or more arrays, each array comprising one or more light-emitting elements for generating light; (b) a current driver system operatively coupled to the one or more arrays, the current driver system for selectively supplying electrical drive current to each of the one or more arrays, the current driver system being responsive to one or more drive signals; (c) one or more optical sensor systems operatively coupled to the one or more light-emitting elements, each optical sensor system comprising one or more optical sensors for sensing a predetermined portion of the light generated by the light-emitting elements, each optical sensor system configured to generate optical signals representative of chromaticity and luminous flux output of the predetermined portion of the light; (d) a heat sensing system operatively coupled to the one or more arrays, the heat sensing system comprising one or more thermal sensors for generating first signals representative of junction temperatures of each of the one or more arrays, at least one thermal sensor positioned proximate to each of the one or more arrays; and (e) a controller operatively connected to the current driver system, the one or more optical sensor systems and the heat sensing system; the controller being configured to generate one or more drive signals in response to the optical signals relative to the desired chromaticity and luminous flux output, the controller further configured to modify the one or more drive signals in response to the first signals thereby compensating for temperature variations of the arrays; wherein the luminaire system is adapted for connection to a source of power.