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:
Dec. 26, 2017
Filed:
Aug. 17, 2015
Canon Kabushiki Kaisha, Tokyo, JP;
Nobuyuki Miyazawa, Utsunomiya, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
Provided is a zoom lens, comprising, in order from an object side to an image side, first to fourth lens units having positive, negative, positive, and positive refractive powers. During zooming, first lens unit does not move, and second to fourth lens units move. Third lens unit comprises, in order from the object side to the image side, first and second lens subunits each having a positive refractive power. Second lens subunit moves in a direction having a component of a direction perpendicular to an optical axis during image blur correction. Third lens unit comprises at least two positive lenses and at least two negative lenses. Second lens subunit comprises a positive lens and a negative lens. A focal length (f) of second lens unit, a focal length (f) of third lens unit, and a focal length (f) of second lens subunit are each appropriately set.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile