Patent ID: 7131736

Claim:
A light source apparatus, comprising: at least a first reflecting device having first and second focal points; at least a first arc lamp having a first arc located at about the first focal point of the first reflecting device, the first arc lamp capable of producing first light rays; a compound parabolic concentrator having input and output ends, the input end located at approximately the second focal point of the first reflecting device to receive the first light rays at the input end over a first range of acceptance angles and to emit the first light rays from the output end with a second range of exit angles, the second range being smaller than the first range, wherein the first light rays exit the compound parabolic concentrator with an étendue less than about 7 mm 2 ·sr; and an optical integrator having an input aperture positioned to receive the first light rays from the output end of the compound parabolic concentrator, and an output aperture from which the first light rays are capable of exiting with a substantially uniform brightness.