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:
Nov. 04, 2008
Filed:
Dec. 17, 2004
Yoshitaka Itoh, Matsumoto, JP;
Shohei Yoshida, Shimosuwa-cho, JP;
Shoichi Uchiyama, Suwa-gun, JP;
Junichi Nakamura, Shiojiri, JP;
Takashi Nitta, Chino, JP;
Tsunemori Asahi, Hotaka-machi, JP;
Yoshitaka Itoh, Matsumoto, JP;
Shohei Yoshida, Shimosuwa-cho, JP;
Shoichi Uchiyama, Suwa-gun, JP;
Junichi Nakamura, Shiojiri, JP;
Takashi Nitta, Chino, JP;
Tsunemori Asahi, Hotaka-machi, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A projection-type display deviceincluding a light source, an optical integrator, dichroic mirrorsand, a reflecting mirror, a relay optical system, parallelizing lensesB,G andR, liquid crystal light valvesB,G andR, incident side lensesB,G andR, a light-synthesizing cross dichroic prism, a relay lens, an emergent side lens, a liquid crystal light valveand a projection lens, and liquid crystal light valveis provided in the rear stage of liquid crystal light valvesB,G andR.