Invention Grant
- Patent Title: Zoom lens and imaging apparatus
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Application No.: US14284784Application Date: 2014-05-22
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Publication No.: US09715125B2Publication Date: 2017-07-25
- Inventor: Yasuhiko Obikane
- Applicant: Tamron Co., Ltd.
- Applicant Address: JP Saitama-Shi
- Assignee: Tamron Co., Ltd.
- Current Assignee: Tamron Co., Ltd.
- Current Assignee Address: JP Saitama-Shi
- Agency: The Webb Law Firm
- Priority: JP2013-110441 20130524
- Main IPC: G02B27/64
- IPC: G02B27/64 ; G02B15/14 ; G02B15/22 ; G02B15/173

Abstract:
A zoom lens includes a first lens group having positive refracting power, a second lens group having negative refracting power, a third lens group having positive refracting power, a fourth lens group having negative refracting power and a fifth lens group having negative refracting power in order from an object side, in which the lens groups move in magnification change from a wide angle end to a telephoto end such that a gap between the first lens group and the second lens group increases and a gap between the second lens group and the third lens group decreases, a negative lens group disposed closer to an image focusing side than a diaphragm among all lens groups is set as a focusing lens group, and the focusing lens group moves toward the image focusing side at focusing from infinity to a close object, the zoom lens satisfies a conditional expression.
Public/Granted literature
- US20140347546A1 Zoom Lens and Imaging Apparatus Public/Granted day:2014-11-27
Information query