Patent ID: 7021797
Filing Date: 2006-04-04
Classification: F21K,F21V,F21Y,G02B,H01L

Abstract:
1. An optical device for spatially displacing and redistributing a radiant output of a light emitter that emits a substantially hemispherical emission of light, the optical device comprising: a lower transfer section having a transfer section top end and a transfer section bottom end; and an upper ejector section disposed upon the transfer section top end, wherein at least a portion of each of the upper ejector section and the lower transfer section is constructed of a transparent dielectric, wherein the light emitter is disposed at the transfer section bottom end, wherein the lower transfer section is adapted to transmit the light emitted by the light emitter substantially via total internal reflection to form a reconstituted emission of light directed into the upper ejector section, and wherein the upper ejector section is adapted to redistribute the reconstituted emission of light into a solid angle of external directions.