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:
Feb. 08, 2022
Filed:
Jun. 09, 2020
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventors:
Masato Katayose, Utsunomiya, JP;
Junya Ichimura, Utsunomiya, JP;
Assignee:
CANON KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 15/14 (2006.01); G02B 15/20 (2006.01);
U.S. Cl.
CPC ...
G02B 15/145121 (2019.08); G02B 15/145105 (2019.08); G02B 15/20 (2013.01);
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, a third lens unit having a positive refractive power, a fourth lens unit having a negative refractive power, and a rear unit having a plurality of lens units, a distance between adjacent lens units changing during zooming. A predetermined condition is satisfied.