Patent ID: 8704456
Filing Date: 2014-04-22
Classification: H05B

Abstract:
1. A solid state lighting system, comprising: a plurality of arrays of light emitting diodes, wherein a first array from the plurality of arrays has a first emitted spectrum at a full intensity level, wherein a first electrical biasing for the first array from the plurality of arrays produces a first wavelength shift, and wherein a second electrical biasing for the first array from the plurality of arrays produces a second, opposing wavelength shift; a driver circuit coupled to the first array from the plurality of arrays of light emitting diodes; an interface configured to receive information designating a selected intensity level lower than the full intensity level; a memory configured to store a plurality of parameters corresponding to a plurality of intensity levels, wherein a parameter from the plurality of parameters corresponds to the selected intensity level; and a controller coupled to the memory and to the driver circuit, wherein the controller is configured to retrieve the parameter from the memory and to convert the parameter into a corresponding control signal to the driver circuit to provide a combined first electrical biasing and second electrical biasing to the first array to generate emitted light having the selected intensity level and having a second emitted spectrum within a predetermined variance of the first emitted spectrum.