Invention Grant
- Patent Title: Zoom lens and image pickup apparatus
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Application No.: US16988124Application Date: 2020-08-07
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Publication No.: US11435564B2Publication Date: 2022-09-06
- Inventor: Kazuya Shimomura
- 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: JPJP2019-149309 20190816
- Main IPC: G02B15/14
- IPC: G02B15/14 ; G02B15/20 ; G02B27/00 ; G02B15/167 ; G02B15/24

Abstract:
Provided is a zoom lens including, in order from an object side: a positive first unit not moving for zooming; one or two moving units move for zooming and including a negative unit; a negative unit moving for zooming; a positive unit including a stop and moving for zooming; and a positive final unit not moving for zooming. The distances on the optical axis, from surface, closest to the object side, of the first unit to a surface, closest to an image side, of the first unit, from the surface, closest to the object side, of the first unit to the stop at the wide angle end, from the surface, closest to the image side, of the first unit to the stop at the wide angle end, and the maximum distance from the surface, closest to the image side, of the first unit to the stop are appropriately set.
Public/Granted literature
- US20210048655A1 ZOOM LENS AND IMAGE PICKUP APPARATUS Public/Granted day:2021-02-18
Information query