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:
Feb. 20, 1996
Filed:
Nov. 30, 1993
Goro Hamagishi, Osaka, JP;
Masahiro Sakata, Osaka, JP;
Katsumi Terada, Kyoto, JP;
Haruhisa Kosaka, Nara, JP;
Shunichi Kishimoto, Osaka, JP;
Keiichi Kanatani, Osaka, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
A liquid crystal projector includes a light source, a color filter for adding color projection image, a liquid crystal panel for forming a projection image on it, a projection lens and an optical unit located between the color filter and the liquid crystal panel for optically coupling the color filter and the liquid crystal panel. The color filter is separately located from the liquid crystal, and therefore the increase in temperature on the color filter because of absorbing the light from the light source has less effect on the liquid crystal panel.