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ZOOM OPTICAL SYSTEM, OPTICAL APPARATUS AND IMAGING APPARATUS USING THE ZOOM OPTICAL SYSTEM, AND METHOD FOR MANUFACTURING THE ZOOM OPTICAL SYSTEM

机译：变焦光学系统，使用该变焦光学系统的光学设备和成像设备以及制造该变焦光学系统的方法

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摘要

A zoom optical system (ZL) comprises, in order from an object: a first lens group (G1) having a positive refractive power; a second lens group (G2) having a negative refractive power; a third lens group (G3) having a positive refractive power; and a subsequent lens group (GR), wherein upon zooming, a distance between the first lens group (G1) and the second lens group (G2) changes, a distance between the second lens group (G2) and the third lens group (G3) changes, and a distance between the third lens group (G3) and the subsequent lens group (GR) changes, the subsequent lens group (GR) comprises a focusing lens group that moves upon focusing, and following conditional expressions are satisfied, 3.70f1/(−f2)5.00, 3.20f1/f35.00, where f1: a focal length of the first lens group (G1), f2: a focal length of the second lens group (G2), and f3: a focal length of the third lens group (G3).

机译：变焦光学系统（ZL）从物体开始依次包括：具有正屈光力的第一透镜组（G 1 ）;具有负屈光力的第二透镜组（G 2 ）;具有正屈光力的第三透镜组（G 3 ）;以及随后的透镜组（GR），其中，在变焦时，第一透镜组（G 1 ）和第二透镜组（G 2 ）之间的距离改变，第二透镜组（G 2 ）与第三透镜组（G 3 ）之间的距离发生变化，第三透镜组（G 3 < / B>），并且随后的透镜组（GR）发生变化，随后的透镜组（GR）包括在聚焦时移动的聚焦透镜组，并满足以下条件表达式：3.70 1 ），f2：第二透镜组的焦距（G 2 ），f3：第三透镜组的焦距（G 3 ）。 展开▼

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公开/公告号US2019361210A1

专利类型

公开/公告日2019-11-28

原文格式PDF

申请/专利权人 NIKON CORPORATION;
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申请/专利号US201616345034

发明设计人 KOSUKE MACHIDA;
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申请日2016-11-21

分类号G02B15/173;G02B9/14;G02B15/20;G02B15/14;

国家 US

入库时间 2022-08-21 11:19:26

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