Patent ID: 8539702
Filing Date: 2013-09-24
Classification: G09F

Abstract:
1. A light source comprising: at least one blue emitting LED operable to generate blue excitation light and a light emitting surface comprising a light transmissive substrate and at least one phosphor; wherein the at least one LED is configured to irradiate the light emitting surface with excitation light such that the phosphor emits light of a second wavelength, wherein the light emitted by the source comprises a combination of blue light from the LED and the second wavelength light from the phosphor; wherein the light emitting surface is interchangeable thereby enabling the source to generate different selected colors of emitted light using the same at least one LED; and a reflective color enhancement layer positioned parallel and adjacent to the at least one phosphor, wherein the reflective color enhancement layer is configured to reflect wavelengths of light from white light produced by light emissions of the at least one LED and the phosphor, and to substantially absorb other unwanted wavelengths of light from the white light.