Patent ID: 6653765
Filing Date: 2003-11-25
Classification: F21K,F21V,F21Y,H01L

Abstract:
A light source comprising:a light emitting component which emits light in both the blue region and the UV region of the electromagnetic spectrum; a first layer comprising a phosphor material, the first layer being positioned to receive the light emitted by the light emitting component, the phosphor material converting light in the UV region to light of a different wavelength and leaving a portion of the blue light unconverted; a second layer comprising a light scattering material, positioned to receive light emitted by the light emitting component, such that all light from the light emitting component exiting the light source passes through both the first and second layers, the light scattering material scattering at least the unconverted blue portion of the light to improve an angular distribution of the unconverted blue portion of the light and provide a more uniform color distribution of the light source.