Title:
VARIABLE POWER OPTICAL SYSTEM, OPTICAL DEVICE, AND METHOD FOR MANUFACTURING VARIABLE POWER OPTICAL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2020/136749
Kind Code:
A1
Abstract:
A variable power optical system (ZL) having a plurality of lens groups, wherein the interval between adjacent lens groups is changed in order to vary the power, a focusing lens group (G5-G6) that moves during focusing and an image-side lens group (G7) that is disposed adjacent to the image side of the focusing lens group (G5-G6) are provided, and the following conditional expression is satisfied. 0.000
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Inventors:
MACHIDA KOSUKE (JP)
GOMIBUCHI OSAMU (JP)
KITANO KENICHI (JP)
WAYU MIZUKI (JP)
WATANABE TSUNEO (JP)
HORIKOSHI MAKOTO (JP)
IMAEI ICHIRO (JP)
GOMIBUCHI OSAMU (JP)
KITANO KENICHI (JP)
WAYU MIZUKI (JP)
WATANABE TSUNEO (JP)
HORIKOSHI MAKOTO (JP)
IMAEI ICHIRO (JP)
Application Number:
PCT/JP2018/047781
Publication Date:
July 02, 2020
Filing Date:
December 26, 2018
Export Citation:
Assignee:
NIKON CORP (JP)
International Classes:
G02B15/20; G02B13/18
Domestic Patent References:
| WO2018221723A1 | 2018-12-06 |
Foreign References:
| JP2012053444A | 2012-03-15 | |||
| JP2014102462A | 2014-06-05 | |||
| JP2015215438A | 2015-12-03 |
Attorney, Agent or Firm:
OHNISHI, Shogo et al. (JP)
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