Patent ID: 8629466

Claim:
A lighting device to produce light having enhanced color uniformity, the lighting device comprising: a light generating element configured to produce light having wavelengths substantially within a first wavelength range, wherein the light generating element has: (a) a light emitting surface, which emits a substantial portion of the light produced by the light generating element; (b) a base surface adjacent a substrate; and (c) a lateral surface linking the base surface and the light emitting surface; a transparent frame positioned over the substrate and the lateral surface without substantially covering the light emitting surface, thereby causing the light generating element to be surrounded by the transparent frame; a wavelength converting layer for converting a portion of the light produced by the light generating element into light having wavelengths within a second wavelength range, whereby light leaving the wavelength converting layer comprises a first light component and a second light component in which the first light component contains light having wavelengths substantially within the first wavelength range and the second light component contains light having wavelengths within the second wavelength range, wherein the wavelength converting layer substantially covers the light emitting surface and at least part of the transparent frame to thereby capture a substantial portion of the light produced by the light generating element; and a scattering frame configured to substantially scatter light that travels therethrough, the scattering frame covering a portion of the wavelength converting layer around a top and edge periphery thereof to thereby receive a portion of the light leaving the wavelength converting layer where said portion of the light leaves the wavelength converting layer adjacent a periphery of the light emitting area, whereby the first light component and the second light component in said portion of the light are substantially mixed in the scattering frame to produce light output having enhanced color uniformity.