Title:
ズームレンズ及びそれを有する撮像装置
Document Type and Number:
Japanese Patent JP5441599
Kind Code:
B2
Abstract:
A zoom lens includes, in order from an object side to an image side and arranged along an optical axis, first to fifth lens units having positive, negative, positive, positive or negative, and positive refractive power, respectively. When zooming, the second lens unit moves monotonically to the image side, the third lens unit moves to the object side in a convex locus, the fifth lens unit moves nonlinearly, and the first and fourth lens units do not move. The fourth lens unit includes a first sub lens unit and a second sub lens unit; the first sub lens unit is an image-stabilizing lens unit that includes a first lens having negative refractive power and a second lens having positive or negative refractive power. The focal length of the fourth lens unit, the focal length of the entire system at the wide-angle end, the Abbe numbers of the materials of the first and second lenses are set appropriately based on predetermined conditions.
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Inventors:
Hiroki Nakayama
Tomoaki Inoue
Masaru Sakamoto
Tomoaki Inoue
Masaru Sakamoto
Application Number:
JP2009232226A
Publication Date:
March 12, 2014
Filing Date:
October 06, 2009
Export Citation:
Assignee:
Canon Inc
International Classes:
G02B15/20; G02B13/18
Domestic Patent References:
| JP2007264395A | ||||
| JP2006171655A |
Attorney, Agent or Firm:
Yukio Takanashi