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:
Dec. 14, 2010
Filed:
Aug. 29, 2007
Yasuyuki Hirouchi, Osaka, JP;
Taichi Yoshimura, Osaka, JP;
Yasuyuki Hirouchi, Osaka, JP;
Taichi Yoshimura, Osaka, JP;
Sanyo Electric Co., Ltd., Moriguchi, JP;
Abstract
Elements of an optical system () of a projection type image display apparatus are stored in an optical system storage () having an upper opening in such a way that the optical element to be arranged close to a light source is fitted in the frame provided in the high-temperature region of the optical system storage () close to the light source, while the rest of the optical elements are respectively fitted in the frames in the low-temperature region of the optical system storage () remote from the light source. The upper opening in the high-temperature region is covered, in the low-temperature region, with a resilient metal lid (), and, in the low-temperature region, covered with a resilient resin lid (). Portions of these lids are partially cut into spring-like narrow strips having tips configured to firmly and accurately hold the lenses fitted in the respective frames, whereby the dimensional tolerances of the optical elements and the frames can be absorbed solely by the lids without resorting to any other parts.