Patent ID: 7687753

Claim:
An illumination system comprising: a) a plurality of light-emitting diodes for providing illumination having a variety of wavelengths; b) one or more detecting devices for providing information regarding the illumination being created by the light-emitting diodes; c) a computing system for receiving the information from the one or more detecting devices and based on a predetermined set of parameters, determining a plurality of control parameters, said predetermined set of parameters defined by a multivariate function having a solution defining a hyperplane representing constant chromaticity for a given luminous intensity; and d) a controller for receiving the plurality of control parameters and determining a set of control signals, wherein said control signals are sent to the light-emitting diodes in order to control the illumination being created, wherein at least one of the one of the one or more detecting devices is configured to detect junction temperature of the light-emitting diodes.