Invention Grant
- Patent Title: Focus lens apparatus
- Patent Title (中): 聚焦透镜设备
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Application No.: US12560741Application Date: 2009-09-16
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Publication No.: US08027098B2Publication Date: 2011-09-27
- Inventor: Masayuki Sakamoto
- Applicant: Masayuki Sakamoto
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Canon U.S.A., Inc. I.P. Division
- Priority: JP2008-239566 20080918
- Main IPC: G02B15/14
- IPC: G02B15/14 ; G02B7/02
Abstract:
Provided is a zoom lens including: a focus lens unit which moves during focusing; and a magnification-varying lens unit which moves during zooming, in which when the magnification-varying lens unit is moved in a direction in which a depth of focus deepens, a focus operation using the focus lens unit is stopped.
Public/Granted literature
- US20100067121A1 FOCUS LENS APPARATUS Public/Granted day:2010-03-18
Information query
