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SEMICONDUCTOR LIGHT-EMITTER AND COMBINATION LIGHT-EMITTER-PHOTOCELL WHEREIN THE REFLECTOR OF THE LIGHT-EMITTER IS COMPRISED OF A MATERIAL DIFFERENT FROM THAT OF THE LIGHT-EMITTER
SEMICONDUCTOR LIGHT-EMITTER AND COMBINATION LIGHT-EMITTER-PHOTOCELL WHEREIN THE REFLECTOR OF THE LIGHT-EMITTER IS COMPRISED OF A MATERIAL DIFFERENT FROM THAT OF THE LIGHT-EMITTER