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:
Mar. 20, 2007
Filed:
Jul. 31, 2003
Applicant:
Shinichi Hara, Kanagawa, JP;
Inventor:
Shinichi Hara, Kanagawa, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25B 21/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A cooling apparatus for cooling an optical element provided in a vacuum atmosphere includes a radiational cooling part, arranged apart from the optical element, for cooling the optical element by radiation heat transfer, and a controller for controlling temperature of the radiation cooling part.