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:
Jul. 03, 2018
Filed:
Aug. 01, 2016
Canon Kabushiki Kaisha, Tokyo, JP;
Shinji Yamasaki, Utsunomiya, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
Provided is a zoom lens, including, 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 third lens unit having a positive refractive power. In the zoom lens, during zooming, the first lens unit is configured not to move, and the second lens unit and the third lens unit are configured to move along mutually different loci, and a focal length (fw) of the zoom lens at a wide angle end, a focal length (ft) of the zoom lens at a telephoto end, a focal length (f2) of the second lens unit, and a focal length (f3) of the third lens unit are appropriately set.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile