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:
Jun. 22, 2004
Filed:
Feb. 04, 2002
Applicant:
Inventors:
Syoichi Yoshii, Osaka, JP;
Takahiro Totani, Nara, JP;
Hideyuki Kanayama, Kyoto, JP;
Kenji Tateishi, Osaka, JP;
Assignee:
Sanyo Electric Co., LTD, Moriguchi, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 2/128 ; G03B 2/114 ; G03B 2/156 ; G03B 5/10 ;
U.S. Cl.
CPC ...
G03B 2/128 ; G03B 2/114 ; G03B 2/156 ; G03B 5/10 ;
Abstract
A rear projection display device capable of reducing the depth of a display device itself, comprising an optical engine, first, second, third reflective mirrors arranged at such positions as to be easily held integrally with each other, a fourth reflective mirror, a plane reflective mirror for turn-back of light flux, and a screen.