Patent ID: 6172807
Filing Date: 2001-01-09
Classification: G02B,H04N

Abstract:
A stereoscopic image display device for providing a stereoscopic image by displaying images with a parallax on a viewer's left and right eyes, comprising:a light source having selectively variable light-emitting regions for emitting light, the light-emitting regions being disposed at various positions from a center of the light source;an optical element having an optical axis extending through the center of the light source for condensing light emitted from the light source to each of the viewer's left and right eyes;spatial modulation means, disposed on an optical path from the light source to the viewer, for spatially modulating the light emitted from the light source; andcontrol means for controlling a light-emission state of the light source so that brightness of the light-emitting regions increases as the positions of the light-emitting regions become distant from the optical axis, in order to obtain a uniform viewing illuminance of the light viewed by the viewer even when a viewing point of the viewer changes and the positions of the light-emitting regions move.