Title:
VARIABLE-POWER OPTICAL SYSTEM, OPTICAL DEVICE, AND METHOD FOR MANUFACTURING VARIABLE-POWER OPTICAL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2016/017724
Kind Code:
A1
Abstract:
The variable-power optical system according to the present invention has, along an optical axis and in order from an object, a first lens group having a positive refractive power, and at least one lens group, an interval between the first lens group and a lens group adjacent to the first lens group on the image side thereof changes during power variation, and the first lens group has a focusing lens group for moving along the optical axis during focusing and a vibration reduction lens group capable of moving so as to include a movement component in a direction orthogonal to the optical axis. The present invention can thereby be provided with high optical performance during focusing.
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Inventors:
MACHIDA KOSUKE (JP)
Application Number:
PCT/JP2015/071580
Publication Date:
February 04, 2016
Filing Date:
July 30, 2015
Export Citation:
Assignee:
NIKON CORP (JP)
International Classes:
G02B15/16; G02B13/18; G02B15/20
Foreign References:
| JPH0293620A | 1990-04-04 | |||
| JPH01284824A | 1989-11-16 | |||
| JP2001042214A | 2001-02-16 | |||
| JPH05303035A | 1993-11-16 | |||
| JP2009133941A | 2009-06-18 | |||
| JPH08334692A | 1996-12-17 | |||
| JP2012093548A | 2012-05-17 | |||
| JP2005134548A | 2005-05-26 | |||
| JP2010276744A | 2010-12-09 | |||
| JP2003262780A | 2003-09-19 | |||
| JP2012113139A | 2012-06-14 |
Other References:
See also references of EP 3176621A4
Attorney, Agent or Firm:
INOUE, Yoshio et al. (JP)
Yoshio Inoue (JP)
Yoshio Inoue (JP)
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