An illuminator assembly that is capable of utilizing a plurality of light sources to produce a desired resultant hue, includes a processor, a memory, a plurality of light sources and a detector. The memory is coupled to the processor and stores data and information. Each of the plurality of light sources...http://www.google.com.au/patents/US6498440?utm_source=gb-gplus-sharePatent US6498440 - Lamp assembly incorporating optical feedback
