Patent ID: 8979301
Filing Date: 2015-03-17
Classification: A61B,F21K,F21V,F21Y,G02B

Abstract:
1. An apparatus for providing a light output to an optical guide for illumination of an object to be imaged, the apparatus comprising: a plurality of solid state light-emitting sources each of which are independently powered and independently controlled, each light-emitting source emitting light at a wavelength that is different from a wavelength emitted by the other light-emitting sources; a heat sink configured to thermally couple the plurality of solid state light-emitting sources and provide conduction of heat generated by the plurality of solid state light-emitting sources; and optical elements configured to collect, collimate, and combine the emissions from the plurality of solid state light-emitting sources into a combined beam of light to be optically coupled to a light guide at an output of the apparatus, wherein light emitted from each of the light-emitting sources travels an optical path length from the respective light-emitting source to the output, the optical path lengths from the light-emitting sources to the output increasing with the wavelength of the light emitted from the respective light-emitting source from a nearest one of the light-emitting sources relative to the output to a farthest one of the light-emitting sources relative to the output.