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:
Sep. 17, 2019
Filed:
Jun. 26, 2018
Applicant:
Canon Denshi Kabushiki Kaisha, Chichibu-shi, JP;
Inventors:
Yasuhiro Sato, Chichibu, JP;
Michio Yanagi, Chichibu, JP;
Assignee:
Canon Denshi Kabushiki Kaisha, Chichibu-shi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 26/02 (2006.01); G03B 9/02 (2006.01); G03B 11/00 (2006.01); G02B 26/00 (2006.01); G02B 27/00 (2006.01); G02B 1/11 (2015.01);
U.S. Cl.
CPC ...
G02B 26/023 (2013.01); G02B 1/11 (2013.01); G02B 26/008 (2013.01); G02B 27/0018 (2013.01); G03B 9/02 (2013.01); G03B 11/00 (2013.01);
Abstract
There is provided with a light amount adjusting device. The light adjusting device has a plurality of optical filter elements. The plurality of optical filter elements have different light transmittances. Reflected light colors from the plurality of optical filter elements are substantially equal.