The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 09, 2001
Filed:
Sep. 15, 1999
Naoki Akamatsu, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
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 is disclosed. The display device comprises the following. (1) A light source with selectively variable light-emitting regions for emitting light, wherein the light-emitting regions are disposed at various positions from a center of the light source. (2) 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. (3) 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. (4) Control means for controlling the 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.