Invention Grant
- Patent Title: Zoom lens and imaging apparatus
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Application No.: US15978223Application Date: 2018-05-14
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Publication No.: US10809504B2Publication Date: 2020-10-20
- Inventor: Masaru Amano , Masaru Yonezawa
- Applicant: FUJIFILM Corporation
- Applicant Address: JP Tokyo
- Assignee: FUJIFILM Corporation
- Current Assignee: FUJIFILM Corporation
- Current Assignee Address: JP Tokyo
- Agency: Studebaker & Brackett PC
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@17c08093
- Main IPC: G02B15/17
- IPC: G02B15/17 ; G02B27/00 ; G02B13/02 ; G02B15/167 ; G02B15/14

Abstract:
The zoom lens consists of, in order from an object side: a first lens group (G1) that remains stationary during zooming and has a positive refractive power; and a subsequent section that consists of five or more lens groups including at least four movable lens groups. The first lens group (G1) is set as an A constituent section (SA), and a lens closest to the object side in the A constituent section (SA) has a negative refractive power. A lens group having a stop is set as a C constituent section (SC), and the C constituent section (SC) moves to the object side during zooming from a wide-angle end to a telephoto end, and then moves toward an image side. A spacing between the A constituent section (SA) and the C constituent section (SC) is set as a B constituent section (SB), and the B constituent section (SB) consists of one or two the movable lens groups, and has a negative refractive power. In addition, the zoom lens satisfies predetermined conditional expressions.
Public/Granted literature
- US20180335604A1 ZOOM LENS AND IMAGING APPARATUS Public/Granted day:2018-11-22
Information query
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