Invention Grant
- Patent Title: Attachment optical system, optical system, manufacturing method of optical system
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Application No.: US17182382Application Date: 2021-02-23
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Publication No.: US11543635B2Publication Date: 2023-01-03
- Inventor: Yoshiyuki Taki
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: CANON KABUSHIKI KAISHA
- Current Assignee: CANON KABUSHIKI KAISHA
- Current Assignee Address: JP Tokyo
- Agency: Carter, DeLuca & Farrell LLP
- Priority: JPJP2020-035790 20200303
- Main IPC: G02B15/02
- IPC: G02B15/02 ; G02B15/08 ; G02B15/14 ; G02B3/06
Abstract:
An attachment optical system includes a first converter optical system attachable to an object side of an imaging optical system, and a second converter optical system attachable to an image side of the imaging optical system. The first converter optical system includes a dome-shaped cover and at least one positive lens. A predetermined condition is satisfied.
Public/Granted literature
- US20210278641A1 ATTACHMENT OPTICAL SYSTEM, OPTICAL SYSTEM, MANUFACTURING METHOD OF OPTICAL SYSTEM Public/Granted day:2021-09-09
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