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:
Sep. 03, 2013
Filed:
Jul. 06, 2011
Satoru Nagarekawa, Matsumoto, JP;
Kiyotaka Nakano, Azumino, JP;
Satoru Nagarekawa, Matsumoto, JP;
Kiyotaka Nakano, Azumino, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A light source device includes: an arc tube having a bulb portion and a sealing portion; a reflector which fixes the arc tube; and a holding portion which holds the reflector, wherein the holding portion includes an inlet port, a partition provided between the inlet port and the arc tube, a pair of passages to which diverges in the partition and can circulate the cooling air to the arc tube, a first opening provided in the partition, and a shutter which is provided on that side of the partition where the inlet port is located, rotates about a rotation axis, and blocks a lower passage of the pair of passages, and on that side of the shutter where the rotation axis is located, a second opening is provided so as to overlap the first opening as seen from the inlet port.