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. 15, 2022
Filed:
Nov. 21, 2019
Canon Kabushiki Kaisha, Tokyo, JP;
Masato Katayose, Utsunomiya, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
Provided is a zoom lens consisting of, 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, and a rear lens group including a plurality of lens units, and an interval between each pair of adjacent lens units is changed during zooming. When the rear lens group includes a lens unit Ln disposed closest to the image side among lens units including at least one positive lens and at least one negative lens, the first lens unit and the lens unit Ln are configured to move for zooming. The first lens unit includes, in order from the object side to the image side, a first positive lens, a second positive lens, and a first negative lens.