Patent ID: 8770773

Claim:
A light source device comprising: a light emitting section to output color light in a first wavelength region; a color conversion layer provided to be opposed to the light emitting section at a distance to convert a first part of the color light in the first wavelength region from the light emitting section into second color light in a second wavelength region, a wavelength of the second wavelength region being longer than that of the first wavelength region, and to output the second color light in the second wavelength region and to transmit a second part of the color light in the first wavelength region; wherein the light emitting section has a plurality of point sources of light arranged at intervals on a substrate, and the color conversion layer extends over an entire region of the substrate where the plurality of point sources of light are arranged; wherein the plurality of point sources of light are arranged on a plane, and the color conversion layer is arranged so as to be substantially parallel to the plane; wherein a color conversion efficiency of the color conversion layer for exiting light with respect to incident light from the plurality of point sources of light is uniform independent of positions within a region corresponding to the plurality of point sources of light; wherein an intensity of the first color light and the second color light output from the color conversion layer is uniform independent of an exit angle; wherein a light path length within the color conversion layer of light passing through the color conversion layer is uniform independent of the exit angle; and wherein a light exit surface of the color conversion layer in each region corresponding to each of the plurality of point sources of light is formed as a convex curved surface.