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:
Apr. 06, 2021
Filed:
Dec. 13, 2018
Canon Kabushiki Kaisha, Tokyo, JP;
Takashi Okada, Saitama, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
Provided is a zoom lens including: a positive first unit; a negative second unit; a positive third unit; a positive fourth unit; a positive fifth unit; and a sixth unit, wherein the first unit is moved toward the object side for zooming from wide angle end to telephoto end, and an interval between each pair of adjacent units is changed for zooming, wherein the fifth unit is moved for focusing, and wherein a focal length at wide angle end, a focal length of the fifth unit, an F-number of the zoom lens at wide angle end, a total length at wide angle end, a distance from a lens surface on the object side of the fifth unit to an image plane at wide angle end at infinity, and a movement amount of the fifth unit for zooming from wide angle end to telephoto end at infinity are appropriately set.