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:
Oct. 07, 2014
Filed:
Apr. 11, 2013
Canon Kabushiki Kaisha, Tokyo, JP;
Yoshihisa Tashiro, Nikko, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A zoom lens includes first to fifth lens unit having negative, positive, positive, negative, and positive refractive powers, in an order from an object side to an image side, an interval of each lens unit is configured to be changed in zooming, the first lens unit, in order from the object side to the image side, consists of one or two negative lenses and one positive lens, the second lens unit consists of one lens component that moves to the image side in focusing on an object at an infinite distance to a short distance object, and an interval D23, combined focal lengths D23w, f23w, and f4Rw, and a length D2 are appropriately set.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile