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:
May. 08, 2018
Filed:
Dec. 07, 2015
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventors:
Assignee:
CANON KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03F 7/20 (2006.01); H01J 61/52 (2006.01); G03F 7/32 (2006.01); H01J 61/86 (2006.01);
U.S. Cl.
CPC ...
H01J 61/526 (2013.01); G03F 7/20 (2013.01); G03F 7/32 (2013.01); G03F 7/70016 (2013.01); G03F 7/70891 (2013.01); H01J 61/86 (2013.01);
Abstract
A cooling apparatus for cooling a light source unit is provided. The cooling apparatus includes a cooling unit provided outside a path of light from the light source unit, and a heat pipe configured to connect a heat generating portion of the light source unit and the cooling unit. The heat pipe also serves as an electrode wire of the light source unit.