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:
Aug. 25, 2015
Filed:
May. 23, 2014
Canon Kabushiki Kaisha, Tokyo, JP;
Shoichi Takemoto, Saitama, JP;
CANON KABUSHIKI KAISHA, , JP;
Abstract
A zoom lens includes, in order from the object side, a positive first lens unit which does not move for zooming or focusing, a negative second lens unit which moves during zooming, a positive third lens unit which moves during zooming, a negative fourth lens unit which moves during zooming and focusing, and a positive fifth lens unit which does not move for zooming or focusing. An aperture stop which does not move for zooming or focusing is arranged adjacent to the fourth lens unit. The focal lengths of the second, third, and fourth lens units, a zoom ratio of the zoom lens at infinity focus, the lateral magnification of the third lens unit at the wide angle end and the telephoto end at infinity focus, the lateral magnifications of the fourth and fifth lens units at the telephoto end at infinity focus are appropriately set.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile