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:
Mar. 30, 2010
Filed:
Sep. 13, 2007
Makoto Fujimoto, Tokyo, JP;
Makoto Fujimoto, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image display apparatus including a light source unit, a liquid crystal display panel, an illumination optical system leading light from the light source unit to the liquid crystal display panel, and a display optical system leading light from the liquid crystal display panel to an observer. The illumination optical system and the display optical system share an optical surface having dielectric multilayer films and being concave toward the liquid crystal display panel on a plane including a center ray corresponding to an angle of view. The optical surface reflects light from the light source unit for leading the light to the liquid crystal display panel while transmitting light reflected from the liquid crystal display panel. On the plane including the center ray, the brightness of the light-emitting surface of the light source unit is reduced toward the optical surface smaller than that in the remote from the optical surface.