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:
Dec. 25, 2018
Filed:
Jul. 24, 2015
Applicant:
Canon Denshi Kabushiki Kaisha, Chichibu-shi, JP;
Inventors:
Osamu Sato, Hiki-gun, JP;
Kyousuke Miyashita, Tokyo, JP;
Assignee:
Canon Denshi Kabushiki Kaisha, Chichibu-shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/22 (2006.01); G02B 5/20 (2006.01); G03B 9/02 (2006.01); G03B 11/00 (2006.01);
U.S. Cl.
CPC ...
G02B 5/22 (2013.01); G02B 5/208 (2013.01); G03B 9/02 (2013.01); G03B 11/00 (2013.01);
Abstract
A light amount adjustment device of this invention includes a light path forming member including an aperture which forms a light path, a plurality of light amount adjustment members which adjust the amount of light which passes through the aperture, and a plurality of movement units linearly advancing and retracting the light amount adjustment members with respect to the aperture.