Patent ID: 8356912
Filing Date: 2013-01-22
Classification: F21K,F21S,F21V,F21Y,H01L,H05B

Abstract:
1. A lighting fixture for emitting visible light and adapted to provide lighting in an area to be inhabited by a person, the lighting fixture comprising: a structure forming an optical integrating cavity, the optical integrating cavity comprising: a plurality of light emitting diodes (LED), each LED comprising an enclosure and a semiconductor chip contained within the enclosure, each LED coupled for emission of radiant energy into the cavity, at least one of the LEDs emitting radiant energy of a first wavelength; and a coating layer containing at least one phosphor, extending across a substantial portion of the diffusely reflective inner surface of the cavity, the at least one phosphor being of a type excited by radiant energy of the first wavelength for emission of visible light of at least one second wavelength different from the first wavelength for reflection, wherein the diffusely reflective inner surface of the cavity is outside the enclosures of the LEDs.