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:
Jul. 05, 2011
Filed:
Feb. 19, 2008
Applicants:
Shigeyasu Soma, Shiojiri, JP;
Takeshi Takezawa, Matsumoto, JP;
Inventors:
Shigeyasu Soma, Shiojiri, JP;
Takeshi Takezawa, Matsumoto, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 21/18 (2006.01); G03B 21/26 (2006.01);
U.S. Cl.
CPC ...
Abstract
A light source includes an arc tube which emits light, a reflector which reflects the light emitted from the arc tube, and a holding unit which holds the reflector. The holding unit has an air supply port through which cooling air is introduced into the light source on the light emitting side of the arc tube, and a first rectifying portion which guides cooling air having been supplied from the air supply port and passed through the light emitting side of the arc tube toward an area above the arc tube.