Title:
VARIABLE POWER OPTICAL SYSTEM, OPTICAL DEVICE, AND METHOD FOR PRODUCING VARIABLE POWER OPTICAL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2016/017723
Kind Code:
A1
Abstract:
The variable power optical system of the present application has, in order from a body side, a first lens group (G1) having a positive refractive power, a second lens group (G2) having a negative refractive power, and a third lens group (G3) having a positive refractive power, wherein: the first lens group has a front group (G11) having a negative refractive power and a rear group (G12) having a positive refractive power; focusing is carried out by moving the front group (G11); and at least a portion of the first lens group (G1), second lens group (G2), or third lens group (G3) moves, as a vibration reduction lens group, in a direction including a direction component that is orthogonal to the optical axis.
Inventors:
UEHARA TAKERU (JP)
Application Number:
PCT/JP2015/071579
Publication Date:
February 04, 2016
Filing Date:
July 30, 2015
Export Citation:
Assignee:
NIKON CORP (JP)
International Classes:
G02B15/16; G02B13/18
Foreign References:
| JPH09152551A | 1997-06-10 | |||
| JPH103036A | 1998-01-06 | |||
| JPH05100166A | 1993-04-23 | |||
| JP2005275435A | 2005-10-06 |
Other References:
See also references of EP 3176623A4
Attorney, Agent or Firm:
INOUE, Yoshio et al. (JP)
Yoshio Inoue (JP)
Yoshio Inoue (JP)
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