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:
May. 12, 2015
Filed:
Jun. 27, 2013
Canon Kabushiki Kaisha, Tokyo, JP;
Kaoru Eguchi, Utsunomiya, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The zoom lens includes at least five lens groups including first, second, third, fourth and fifth lens groups respectively having positive, negative, negative, positive and positive refractive powers. At least four movable lens groups are moved during zooming. At least two movable lens groups placed further on an image side than an aperture. C1 and C2 lens groups are moved so as to draw mutually different loci and such that a distance therebetween becomes maximum at a middle zoom position. The C1 and C2 lens groups are located further on a same side at the telephoto end than at a wide-angle end. At least one of D1 and D2 lens groups is moved during the zooming so as to be located further on an object side at a telephoto end than at the wide-angle end. A distance therebetween at the telephoto end becomes larger than that at wide-angle end.