Patent ID: 7845825

Claim:
A light fixture for a lighting application, comprising: a near ultraviolet (UV) solid state source, containing a semiconductor chip for producing near UV electromagnetic energy in a range of 380-420 nm; a macro optic outside and coupled to the near UV solid state source, for receiving and processing the near UV electromagnetic energy to produce a light output for the fixture; and a plurality of remote doped semiconductor nanophosphors associated with the macro optic and apart from the semiconductor chip, each of the remote doped semiconductor nanophosphors being of a type excited in response to near UV electromagnetic energy in the range of 380-420 nm from the solid state source for re-emitting visible light of a different spectrum having substantially no overlap with absorption spectra of the doped semiconductor nanophosphors, the remote doped semiconductor nanophosphors together producing visible light in the output for the fixture from the fixture when excited, wherein: (a) the visible light in the output for the fixture produced by near UV excitation of the remote doped semiconductor nanophosphors is at least substantially white; (b) the visible light in the output for the fixture produced by near UV excitation of the remote doped semiconductor nanophosphors has a color rendering index (CRI) of 75 or higher; and (c) the visible light in the output for the fixture produced by near UV excitation of the remote doped semiconductor nanophosphors has a color temperature of one of the following ranges: 2,725±145° Kelvin; 3,045±175° Kelvin; 3,465±245° Kelvin; and 3,985±275° Kelvin.