Invention Grant
- Patent Title: Zoom lens system and image pickup apparatus including the same
- Patent Title (中): 变焦透镜系统和包括其的摄像装置
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Application No.: US12186412Application Date: 2008-08-05
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Publication No.: US07715112B2Publication Date: 2010-05-11
- Inventor: Kenji Shinohara , Kenji Obu
- Applicant: Kenji Shinohara , Kenji Obu
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Canon USA Inc IP Div
- Priority: JP2007-203963 20070806
- Main IPC: G02B15/14
- IPC: G02B15/14 ; G02B27/64
Abstract:
A zoom lens system includes, in order from an object side to an image side, first, second, third, and fourth lens units having positive, negative, positive, and positive optical powers, respectively. The first lens unit includes one negative lens element and two positive lens elements, and moves during zooming. The zoom lens system satisfies the following condition: 0.05
Public/Granted literature
- US20090040625A1 ZOOM LENS SYSTEM AND IMAGE PICKUP APPARATUS INCLUDING THE SAME Public/Granted day:2009-02-12
Information query
