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Patent Searching and Data


Title:
OPTICAL SYSTEM, OPTICAL DEVICE, AND METHOD FOR MANUFACTURING OPTICAL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/229849
Kind Code:
A1
Abstract:
Provided are: an optical system comprising a front group having a positive refractive power, and a rear group, the front group moving along the optical axis during focusing, and the optical system satisfying a predetermined conditional expression, whereby the optical system is suitable for use in an imaging element having an increased number of pixels and having good optical performance in which aberrations can be satisfactorily corrected; an optical device; and a method for manufacturing an optical system.

Inventors:
TSUBONOYA KEISUKE (JP)
HARADA HIROKI (JP)
TAKE TOSHINORI (JP)
Application Number:
PCT/JP2018/020552
Publication Date:
December 05, 2019
Filing Date:
May 29, 2018
Export Citation:
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Assignee:
NIKON CORP (JP)
International Classes:
G02B13/00; G02B13/18
Domestic Patent References:
WO2016121945A12016-08-04
Foreign References:
JP2016099552A2016-05-30
JP2018040858A2018-03-15
JP2010032783A2010-02-12
JP2015004717A2015-01-08
JP2017009644A2017-01-12
JP2014092681A2014-05-19
Attorney, Agent or Firm:
INOUE & CO. et al. (JP)
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