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:
Nov. 22, 2005
Filed:
May. 27, 2002
Takaaki Ozawa, Shiojih, JP;
Toshio Matsumiya, Matsumoto, JP;
Takaaki Ozawa, Shiojih, JP;
Toshio Matsumiya, Matsumoto, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A projector comprises a light source devicein which a light source cooling air flow channel X for introducing a cooling air to an internal light source lampis formed and an internal housingfor housing an optical element unit, which subjects the light beam emitted from this light source deviceto an optical processing. The internal housingis formed with a pair of optical element cooling opening portionsA,A, which are oppositely arranged by mutually pinching the optical element unitin order to allow a cooling air to pass through according to the arrangement of the optical element unit. Further, the underside of the internal housingis provided with a fan, in which a suction portA is directed to the opening portionA and an exhaust portB is connected to the light source cooling air flow channel X. Since an air flows along an arrow marked channel, the optical element unitand the light source lampcan be sufficiently cooled.