Patent ID: 7268370

Claim:
A phosphor apparatus that emits white light due to excitation by a light emitting diode chip capable of emitting blue or ultraviolet light, the phosphor apparatus comprising: a substrate that allows transmission of visible light; a semiconductor layer formed on the substrate, a phosphor layer made of a phosphor material formed on a surface of the substrate opposite to a surface thereof on which the semiconductor layer is formed, or on a surface of the semiconductor layer opposite to a surface thereof on which the substrate is formed; wherein the light emitting diode chip is placed apart from the phosphor apparatus and the light emitting diode chip is not attached to the substrate, wherein the phosphor layer comprises at least a first phosphor layer and a second phosphor layer, and wherein the first phosphor layer and the second phosphor layer emit lights having different center wavelengths due to excitation by the light emitting diode.