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:
Mar. 25, 2025
Filed:
Jul. 16, 2020
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventor:
Makoto Nakahara, Utsunomiya, JP;
Assignee:
CANON KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 15/20 (2006.01); G02B 13/00 (2006.01); G02B 13/02 (2006.01); G02B 15/177 (2006.01); G02B 27/00 (2006.01); H04N 23/69 (2023.01);
U.S. Cl.
CPC ...
G02B 15/177 (2013.01); G02B 13/009 (2013.01); G02B 13/02 (2013.01); G02B 15/20 (2013.01); G02B 27/0025 (2013.01); H04N 23/69 (2023.01);
Abstract
A zoom lens includes, in order from an object side to an image side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, and a rear unit including a plurality of lens units. During zooming, a distance between adjacent lens units of the first, second and plurality of lens units changes. The rear unit includes an aperture stop and a negative lens unit disposed closest to an object among at least one lens unit having a negative refractive power on the image side of the aperture stop. The negative lens unit includes a positive lens. A predetermined conditions are satisfied.