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. 20, 2006
Filed:
Apr. 28, 2004
Motoyuki Fujimori, Suwa, JP;
Takeshi Takezawa, Matsumoto, JP;
Hiroyuki Meguro, Matsumoto, JP;
Masakazu Kitamura, Matsumoto, JP;
Motoyuki Fujimori, Suwa, JP;
Takeshi Takezawa, Matsumoto, JP;
Hiroyuki Meguro, Matsumoto, JP;
Masakazu Kitamura, Matsumoto, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A light source lamp unit () includes a light source lamp (), an ellipsoidal reflector () and a plate body (). The plate body () is provided behind the reflector () with a gap kept therebetween, which has a shape corresponding to the profile of a reflecting portion () of the reflector (). A cooling channel for passing a cooling air is formed between the plate body () and the reflector (). The width of the cooling channel in a direction along an optical axis of the light source lamp () is minimized at a part near a neck portion () of the reflecting portion () and enlarged toward the peripheral edge of the reflecting portion () of the reflector ().
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile