Title:
An imaging device which has a zoom lens and it
Document Type and Number:
Japanese Patent JP6021491
Kind Code:
B2
Abstract:
A zoom lens includes, in order from an object side to an image side, first to fourth lens units having negative, positive, negative, and positive refractive power, respectively. Each lens unit moves during zooming so that a distance between the first lens unit and the second lens unit at the telephoto end is shorter than at the wide-angle end and a distance between the second lens unit and the third lens unit and a distance between the third lens unit and the fourth lens unit at the telephoto end are larger than those at the wide-angle end. A focal length of the third and fourth lens units, a focal length of the entire zoom lens at the wide-angle end, a focal length of the entire zoom lens at the telephoto end, and a sum of axial thicknesses of the first to fourth lens units are appropriately set.
Inventors:
Yousuke Okubo
Application Number:
JP2012165634A
Publication Date:
November 09, 2016
Filing Date:
July 26, 2012
Export Citation:
Assignee:
Canon Inc
International Classes:
G02B15/20; G02B13/18
Domestic Patent References:
| JP2011133739A | ||||
| JP2012123030A | ||||
| JP2006208889A | ||||
| JP2009058873A | ||||
| JP2012208378A |
Attorney, Agent or Firm:
Takuma Abe
Sogo Kuroiwa
Sogo Kuroiwa