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:
Oct. 01, 2019
Filed:
May. 26, 2017
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventors:
Shigenobu Sugita, Shimotsuke, JP;
Suguru Inoue, Utsunomiya, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 9/10 (2006.01); G02B 15/16 (2006.01); G02B 27/00 (2006.01); G02B 13/02 (2006.01); G02B 13/16 (2006.01);
U.S. Cl.
CPC ...
G02B 9/10 (2013.01); G02B 13/02 (2013.01); G02B 13/16 (2013.01); G02B 15/161 (2013.01); G02B 27/0025 (2013.01);
Abstract
In an optical system which includes a positive lens Gp and in which a distance on an optical axis from an object-side lens surface of a lens disposed closest to an object side to an image surface is shorter than a focal length of an entire system, an arrangement and a material of the positive lens Gp, and an arrangement of a focus unit are set appropriately.