Invention Publication
- Patent Title: OPTICAL SYSTEM, OPTICAL APPARATUS, AND METHOD FOR MANUFACTURING OPTICAL SYSTEM
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Application No.: US17917933Application Date: 2021-03-04
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Publication No.: US20230152556A1Publication Date: 2023-05-18
- Inventor: Fumiaki OHTAKE , Satoshi MIWA , Atsuki ITO
- Applicant: Nikon Corporation
- Applicant Address: JP Minato-ku, Tokyo
- Assignee: Nikon Corporation
- Current Assignee: Nikon Corporation
- Current Assignee Address: JP Minato-ku, Tokyo
- Priority: JP 20078582 2020.04.27 JP 20078609 2020.04.27
- International Application: PCT/JP2021/008532 2021.03.04
- Date entered country: 2022-10-09
- Main IPC: G02B9/14
- IPC: G02B9/14 ; G02B13/00
Abstract:
An optical system used in an optical apparatus is configured to include a first lens group having positive refractive power, a focusing group that moves along an optical axis at focusing, and a rear group, in order from an object side, so that the first lens group includes a first-A lens group disposed on the object side of the largest air space A in the first lens group, and that all of the following conditional expressions are satisfied:
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Information query
