Patent ID: 7484862
Filing Date: 2009-02-03
Classification: G02B

Abstract:
1. A light source apparatus comprising: plural light-emitting elements which emit light and are disposed so that their light-emitting surfaces face a direction of an emergence surface of the light source apparatus; a polarization selective element which transmits a light component with a first polarization direction and reflects a light component with a second polarization direction different from the first polarization direction, the light components being included in the light emitted from the plural light-emitting elements; a reflecting surface which is disposed at a position closer to the light-emitting elements than the polarization selective element and reflects the light reflected on the polarization selective element toward the polarization selective element; a diffusing member which is disposed between the reflecting surface and the polarization selective element and diffuses the light from the light-emitting elements and the reflecting surface; an optical element which is disposed between the diffusing member and the polarization selective element and has a light-collecting function; and a polarizer which is disposed at a position closer to the emergent surface of the apparatus than the polarization selective element and transmits the light component with the first polarization direction that emerged from the polarization selective element, wherein the reflecting surface covers at least a part other than optical apertures of the light-emitting elements in a region where the plural light-emitting elements are disposed, and the reflecting surface has openings through which the light from the optical apertures passes.