Invention Grant
- Patent Title: Zoom lens and image pickup apparatus including the same
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Application No.: US15855121Application Date: 2017-12-27
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Publication No.: US10564407B2Publication Date: 2020-02-18
- Inventor: Shigenobu Sugita
- 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: JP2016-255053 20161228
- Main IPC: G02B15/14
- IPC: G02B15/14 ; G02B7/04 ; G02B15/177 ; G02B15/173
Abstract:
A zoom lens of the present invention is a zoom lens including a variable stop whose aperture diameter is variable in zooming, the variable stop is a stop which determines a minimum f-number of the zoom lens at least at one of zoom positions in an entire zoom range, and the aperture diameter of the variable stop is variable in focusing at least at a telephoto end in the entire zoom range.
Public/Granted literature
- US20180180859A1 ZOOM LENS AND IMAGE PICKUP APPARATUS INCLUDING THE SAME Public/Granted day:2018-06-28
Information query
