Patent ID: 8723766

Claim:
A solid state lighting system, comprising: a plurality of arrays of light emitting diodes, wherein an array from the plurality of arrays has a first emitted spectrum at a full intensity level; a temperature sensor coupled to the array from the plurality of arrays of light emitting diodes, wherein the temperature sensor is configured to sense a junction temperature of the array from the plurality of arrays of light emitting diodes; a driver circuit coupled to the array from the plurality of arrays of light emitting diodes; an interface configured to receive information designating a selected intensity level, wherein the selected intensity level is a level other than the full intensity level; a memory configured to store a plurality of parameters corresponding to a plurality of intensity levels and a predetermined range of temperatures; and a controller coupled to the memory and to the driver circuit, wherein the controller is configured to: receive a temperature signal from the temperature sensor; retrieve at least one parameter from the plurality of parameters from the memory, wherein the at least one parameter corresponds to the selected intensity level and the temperature signal received from the temperature sensor; and convert the at least one parameter into a corresponding control signal for the driver circuit to provide a combined biasing to the array to thereby generate emitted light having the selected intensity level over the predetermined range of temperatures, wherein the combined biasing includes a first electrical biasing and a second electrical biasing; wherein the first electrical biasing is configured to produce a first wavelength shift and the second electrical biasing is configured to produce a second wavelength shift opposed to the first wavelength shift, such that the emitted light has a second emitted spectrum within a predetermined variance of the first emitted spectrum.