Patent ID: 7973495

Claim:
An adaptive control apparatus for a solid-state lighting system, the lighting system comprising one or more groups of one or more light-emitting elements, the apparatus comprising: a) a voltage control device operatively coupled to the one or more groups of one or more light-emitting elements, the voltage control device configured to provide each group with an independently controllable voltage; b) a feedback system operatively coupled to the one or more groups of one or more light-emitting elements, the feedback system configured to detect and generate a signal representative of drive currents through the one or more groups; and c) a computing device operatively coupled to the feedback system and configured to receive the signal, the computing device operatively coupled to the voltage control device and configured to control operation of the voltage control device; wherein the computing device is configured to adaptively evaluate, based on the signal, a required voltage that causes a desired respective drive current in each of the one or more groups.