Invention Grant
- Patent Title: Zoom lens, and imaging apparatus incorporating the same
- Patent Title (中): 变焦镜头和包含该变焦镜头的成像装置
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Application No.: US14034544Application Date: 2013-09-23
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Publication No.: US08767310B2Publication Date: 2014-07-01
- Inventor: Yasuji Ogata , Yasuharu Yamada , Toshio Takahashi , Toyoki Kon
- Applicant: Olympus Imaging Corp.
- Applicant Address: JP Toyko
- Assignee: Olympus Imaging Corp.
- Current Assignee: Olympus Imaging Corp.
- Current Assignee Address: JP Toyko
- Agency: Kenyon & Kenyon LLP
- Priority: JP2010-166160 20100723
- Main IPC: G02B15/14
- IPC: G02B15/14 ; G02B9/34 ; G02B15/173 ; G02B13/04

Abstract:
The invention provides a zoom lens, characterized by comprising, a zoom lens, which comprises, in order from an object side thereof: a first lens group of negative refracting power, a second lens group of positive refracting power, a third lens group of negative refracting power, and a fourth lens group of positive refracting power, wherein: upon zooming from a wide-angle end to a telephoto end of the zoom lens, a separation between the respective lens groups changes, upon focusing from a focusing-on-infinity state to a close-range focusing state, the third lens group moves in an optical axis direction, and the conditions (1) and (2) are satisfied at the wide-angle end.
Public/Granted literature
- US20140022647A1 ZOOM LENS, AND IMAGING APPARATUS INCORPORATING THE SAME Public/Granted day:2014-01-23
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