Invention Grant
- Patent Title: Zoom lens and imaging apparatus
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Application No.: US15910043Application Date: 2018-03-02
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Publication No.: US10268030B2Publication Date: 2019-04-23
- Inventor: Shunsuke Miyagishima , Tetsuya Ori
- Applicant: FUJIFILM Corporation
- Applicant Address: JP Tokyo
- Assignee: FUJIFILM Corporation
- Current Assignee: FUJIFILM Corporation
- Current Assignee Address: JP Tokyo
- Agency: Studebaker & Brackett PC
- Priority: JP2017-043539 20170308
- Main IPC: G02B15/14
- IPC: G02B15/14 ; G02B15/20 ; G02B13/00 ; G02B13/02 ; G02B15/17 ; G02B27/64

Abstract:
The zoom lens consisting of, in order from an object side: a first lens group that has a positive refractive power; a second lens group that has a negative refractive power; a third lens group that has a negative refractive power; an intermediate part; and a final lens group that has a positive refractive power. The first lens group consists of three lenses, and has a cemented lens which is formed by cementing at least one positive lens and at least one negative lens. The second lens group consists of, in order from the object side, a negative meniscus lens, a biconcave lens, and a biconvex lens. The third lens group consists of one lens. The final lens group has a lens, which is convex toward an image side, at a position closest to the image side. Each lens group moves in a predetermined direction during zooming, and only the third lens group moves in the direction of the optical axis during focusing, and predetermined conditional expressions are satisfied.
Public/Granted literature
- US20180259754A1 ZOOM LENS AND IMAGING APPARATUS Public/Granted day:2018-09-13
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