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:
Aug. 29, 2006
Filed:
Dec. 23, 2003
Applicants:
Yoshihiro Furuta, Neyagawa, JP;
Mitsuhiro Nishiguchi, Hirakata, JP;
Takafumi Goto, Nabari, JP;
Inventors:
Assignee:
Sanyo Electric Co., Ltd., Osaka, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 21/14 (2006.01); G03B 21/22 (2006.01); G02F 1/1335 (2006.01); G02F 1/1347 (2006.01); G02B 5/30 (2006.01); G02B 27/28 (2006.01); H04N 5/74 (2006.01);
U.S. Cl.
CPC ...
Abstract
A projection device includes on a chassis a liquid crystal panel for irradiation with light from a light source, a polarizing plate opposing the liquid crystal panel, and an optical compensation sheet provided between the liquid crystal panel and the polarizing plate, for compensating a twist angle of polarized light. The optical compensation sheet is attached to a rotational adjusting mechanism provided on the chassis so that it can be rotatively adjusted within a plane perpendicular to an optical axis L.