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Patent Searching and Data


Title:
An imaging device which has a zoom lens and it
Document Type and Number:
Japanese Patent JP5936463
Kind Code:
B2
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.

Inventors:
Kaoru Eguchi
Application Number:
JP2012146650A
Publication Date:
June 22, 2016
Filing Date:
June 29, 2012
Export Citation:
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Assignee:
Canon Inc
International Classes:
G02B15/20; G02B13/18
Domestic Patent References:
JP2012113139A
JP11142738A
JP8068941A
JP11014904A
Attorney, Agent or Firm:
Yukio Takanashi