Patent ID: 8322884
Filing Date: 2012-12-04
Classification: H01L

Abstract:
1. A solid state lighting device, comprising: a plurality of solid state light emitters, each having a cover for protecting a light source positioned inside each solid state emitter, and each solid state light emitter configured for emitting light in a predetermined spectrum; an optic, positioned outside of each cover of the solid state emitters, for combining light received from the plurality of solid state light emitters to form output light of the device, wherein at least a portion of the optic for receiving light from the plurality of solid state light emitters is formed of a light transmissive solid having an index of refraction, and having a surface facing each cover of the plurality of solid state emitters; and an index matching material positioned on a first region of the surface of the light transmissive solid, the index matching material for matching the index of refraction of the light transmissive solid, in an optical path between a light emission output of at least one first solid state light emitter and the first region of the surface of the light transmissive solid arranged to receive light from the at least one first solid state light emitter, wherein at least one second solid state light emitter is coupled to supply light to the light transmissive solid without any index matching material in an optical path between a light emission output of the at least one second solid state light emitter and a second region of the surface of the light transmissive solid arranged to receive light from the at least one second solid state light emitter.