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. 09, 2011
Filed:
Oct. 23, 2007
Masaki Tsuchiya, Gunma, JP;
Naoyuki Uchiyama, Gunma, JP;
Masaki Tsuchiya, Gunma, JP;
Naoyuki Uchiyama, Gunma, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
There is disclosed a projector capable of efficiently cooling an optical element while decreasing the generation of noise as much as possible. A projector P includes a main bodyprovided with a light source, an optical element(liquid crystal panelsand, polarization platesA,B and a prism) which processes (modulates) light emitted from this light sourcein accordance with image information and a projection lenswhich projects a modulated projection optical image onto a screen, and further includes a cooling apparatusin which a compressor, a radiator, a capillary tube(a pressure reducing unit) and an evaporatorprovided in the main bodyconstitute a refrigerant circuit, and air subjected to heat exchange between the air and the evaporatoris supplied to the liquid crystal panelsandto cool the panels.