Invention Grant
- Patent Title: Zoom lens and imaging apparatus
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Application No.: US14690901Application Date: 2015-04-20
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Publication No.: US09651761B2Publication Date: 2017-05-16
- Inventor: Tetsuya Ori , Michio Cho
- Applicant: FUJIFILM Corporation
- Applicant Address: JP Tokyo
- Assignee: FUJIFILM Corporation
- Current Assignee: FUJIFILM Corporation
- Current Assignee Address: JP Tokyo
- Agency: Young & Thompson
- Priority: JP2014-091620 20140425
- Main IPC: G02B27/64
- IPC: G02B27/64 ; G02B15/14 ; G02B15/17

Abstract:
A five-group zoom lens including, in order from the object side, positive, negative, negative, positive, and positive groups. The first group includes a negative meniscus lens with the concave surface toward the image side, a positive lens and a positive lens. The second group includes a negative lens with the image-side surface having an absolute value of curvature radius smaller than that of the object side surface, a biconcave lens, and a biconvex lens. The third group includes a negative lens with the object side surface having an absolute value of curvature radius smaller than that of the image-side surface, and is moved during focusing on a closer object. The fifth group includes a positive fifth-A group including a biconvex lens, and a negative fifth-B group including a biconcave lens and a biconvex lens, wherein condition expression (1) is satisfied: −4
Public/Granted literature
- US20150309291A1 ZOOM LENS AND IMAGING APPARATUS Public/Granted day:2015-10-29
Information query