Patent ID: 7675685
Filing Date: 2010-03-09
Classification: G02B

Abstract:
1. An image display apparatus comprising: an image display unit; a light source unit including a light emitting device and an optical surface that receives light from the light emitting device; an illumination optical system configured to guide light from the optical surface of the light source unit to the image display unit; and a display optical system configured to guide light from the image display unit to a viewer, wherein the light source unit is formed such that, when rays are traced from an exit pupil of the display optical system to the optical surface, luminance of the optical surface in an area where there are many rays incident on the optical surface is higher than luminance of the optical surface in an area where there are few rays incident on the optical surface; and wherein the light source unit includes a curved reflective surface that guides light from the light emitting device to the optical surface, the curved reflective surface having different radii of curvature according to a position thereon.