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. 28, 2019
Filed:
Oct. 27, 2017
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventors:
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65H 43/08 (2006.01); B65H 7/02 (2006.01); G03G 15/20 (2006.01); B65H 3/66 (2006.01); B65H 7/14 (2006.01); G03G 15/00 (2006.01);
U.S. Cl.
CPC ...
B65H 7/02 (2013.01); B65H 3/66 (2013.01); B65H 7/14 (2013.01); G03G 15/2028 (2013.01); B65H 43/08 (2013.01); B65H 2406/12 (2013.01); B65H 2406/3662 (2013.01); B65H 2553/41 (2013.01); B65H 2601/26 (2013.01); G03G 15/6511 (2013.01); G03G 2215/00616 (2013.01); G03G 2215/00721 (2013.01);
Abstract
According to the present disclosure, a first guide unit is provided with a first opening portion through which light in an optical path connecting a first optical element unit and a second optical element unit passes, a second guide unit is provided with a second opening portion through which light in the optical path connecting the first optical element unit and the second optical element unit passes, the first guide unit is provided with a duct for sending air to the first optical element unit, and the air coming out from the first opening portion hits the second optical element unit via the second opening portion.