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:
Mar. 03, 2009
Filed:
Mar. 06, 2007
Applicants:
Hiroaki Uchino, Tokyo, JP;
Takaaki Iwaki, Tokyo, JP;
Yasufumi Ogawa, Chiba, JP;
Inventors:
Assignee:
Sony Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03B 21/56 (2006.01); G03B 21/22 (2006.01); H04N 5/64 (2006.01);
U.S. Cl.
CPC ...
Abstract
A rear projection display apparatus includes a transmission type screen, a video projector, a lens sheet, a plurality of pull portions, and a pulling device. The transmission type screen is installed on a front face of an apparatus main body. The video projector is disposed inside the apparatus main body for projecting a video on the transmission type screen from a rear side. The plurality of pull portions are provided along horizontal and vertical sides of the lens sheet and are pulled by a pulling device which extends along a perimeter of the lens sheet.