- 专利标题： Zoom optical system, optical device and method for manufacturing the zoom optical system
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申请号： US16880945申请日： 2020-05-21
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公开(公告)号： US11327279B2公开(公告)日： 2022-05-10
- 发明人: Satoru Shibata , Tomoyuki Sashima
- 申请人： Nikon Corporation
- 申请人地址： JP Tokyo
- 专利权人： Nikon Corporation
- 当前专利权人： Nikon Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： SGPatents PLLC
- 优先权： JPJP2014-175724 20140829,JPJP2014-175725 20140829,JPJP2014-175726 20140829,JPJP2014-175727 20140829,JPJP2014-234426 20141119,JPJP2014-234427 20141119,JPJP2014-234428 20141119,JPJP2014-234429 20141119,JPJP2014-234430 20141119,JPJP2014-234431 20141119,JPJP2015-141990 20150716,JPJP2015-141991 20150716,JPJP2015-141992 20150716,JPJP2015-141993 20150716
- 主分类号： G02B15/20
- IPC分类号： G02B15/20 ; G02B15/14 ; G02B15/173 ; G02B27/64
摘要：
A zoom optical system comprises, in order from an object side: a first lens group having positive refractive power; a front-side lens group; an intermediate lens group having positive refractive power; and a rear-side lens group. The front-side lens group is composed of one or more lens groups and has a negative lens group. At least part of the intermediate lens group is a focusing lens group. The rear-side lens group is composed of one or more lens groups. Upon zooming, distances between the first lens group and the front-side lens group, between the front-side lens group and the intermediate lens group, and between the intermediate lens group and the rear-side lens group change. At least one of the following conditional expressions is satisfied: 0.010