Title:
OPTICAL SYSTEM, OPTICAL DEVICE, AND METHOD FOR MANUFACTURING OPTICAL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2024/057640
Kind Code:
A1
Abstract:
Provided are an optical system capable of obtaining bright and good optical performance while achieving size reduction, an optical device, and a method for manufacturing an optical system. An optical system OL used in an optical device such as a camera 1 comprises, in order from the object side, a front group Gf having positive refractive power, an intermediate group Gi, and a rear group Gr having negative refractive power. The intermediate group Gi comprises a first focusing group GF1 and a second focusing group GF2 that move along different trajectories at the time of focusing. The front group Gf has, in order from the side closest to the object, a negative lens component Ln1, a negative lens component Ln2, and a positive lens component Lp, and the rear group G4 has a negative lens component LnL on the side closest to an image surface. The optical system satisfies conditions expressed by predetermined conditional expressions.
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Inventors:
KOMATSUBARA YOKO (JP)
Application Number:
PCT/JP2023/021326
Publication Date:
March 21, 2024
Filing Date:
June 08, 2023
Export Citation:
Assignee:
NIKON CORP (JP)
International Classes:
G02B13/00; G02B13/18
Domestic Patent References:
| WO2021241230A1 | 2021-12-02 |
Foreign References:
| JP2021113905A | 2021-08-05 | |||
| JP2022182997A | 2022-12-08 | |||
| JP2021018277A | 2021-02-15 | |||
| JP2019197125A | 2019-11-14 |
Attorney, Agent or Firm:
HOSAKA Joyo (JP)
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