Patent ID: 8723146

Claim:
A lamp head module comprising: an optical macro-reflector including a window having an outer surface; an array of light emitting diodes (LEDs) positioned within the optical reflector, the array having a high fill factor and a high aspect ratio operable to provide a high irradiance output beam pattern having a peak irradiance of greater than 25 W/cm 2 at a work piece surface at least 1 mm away from the outer surface of the window of the optical reflector, wherein the peak irradiance does not require operation of the array at a pulsed emission duty cycle; and a micro-channel cooler operable to maintain a substantially isothermal state among p-n junctions of the light emitting devices at a temperature of less than or equal to 80° Celsius, the micro-channel cooler assembly also providing a substrate for the array, wherein a thermally efficient connection is formed between the array and the substrate by mounting the array to the micro-channel cooler wherein deep and long coolant flow channels in fluid communication with the micro-channel cooler serve to balance flow of coolant through the microchannel cooler.