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. 03, 2012
Filed:
Jun. 30, 2010
Ken Wada, Sakura, JP;
Ken Wada, Sakura, JP;
Canon Kabushiki Kaisha, , JP;
Abstract
The zoom lens includes, in order from an object side, a first lens unit (positive), a second lens unit (negative), a reflective member and subsequent lens units. A distance between the second and subsequent lens units is reduced during zooming from a wide-angle end to a telephoto end. One of the subsequent lens units includes a non-shift lens unit and a shift lens unit shiftable for image stabilization. The conditions of 1<(1−βb)βr<3 and 0.70<Lb/Lp<2.00 are satisfied. βb and βr represent lateral magnifications of the shift lens unit and all lens units disposed further on the image side than the shift lens unit when the zoom lens is focused on an infinitely distant object at the telephoto end. Lb represents a distance from an image side surface of the reflective member to an object side lens surface of the shift lens unit. Lp represents a thickness of the reflective member.