公开(公告)号：US20150085374A1

公开(公告)日：2015-03-26

申请号：US14542963

申请日：2014-11-17

Applicant: OLYMPUS CORPORATION

Inventor： Keigo MATSUO ,  Takayuki MIMURA ,  Kanato ADACHI ,  Hisashi GOTO

IPC: G02B15/177 ,  G02B13/00

CPC classification number: G02B15/177 ,  G02B13/009

Abstract: Provided are a variable power optical system in which the value of the entire length with respect to the image height is reduced and the aberration is well corrected, and an image pickup device comprising the same. Specifically provided is a variable power optical system comprising, in order from the object side, at least a first lens group having negative refractive power, a variable power group having positive refractive power, and a final lens group having positive refractive power, wherein the variable power group is provided with, in order from the object side, a first lens element having positive refractive power, a second lens element, and a third lens element, the second lens element has a convex shape on the object side, and the final lens group comprises a positive lens, the variable power optical system satisfying the following conditional expression: 10≦VdLg≦45 −1.0

Abstract translation: 提供了一种可变功率光学系统，其中相对于图像高度的整个长度的值被减小并且像差被良好校正，以及包括该像素的图像拾取装置。 具体地提供了一种可变光源系统，其包括从物体侧起至少具有负折光力的第一透镜组，具有正折光力的可变光焦度组和具有正屈光力的最终透镜组，其中， 功率组从物体侧依次设置具有正折光力的第一透镜元件，第二透镜元件和第三透镜元件，第二透镜元件在物体侧具有凸形形状，并且最终透镜 组包括正透镜，满足以下条件表达式的可变光功率光学系统：10＆nlE; VdLg＆nlE; 45 -1.0 <（R2a-R2b）/（R2a + R2b）<1.0其中VdLg是正透镜的阿贝数 相对于d线的最终透镜组，R2a是第二透镜元件的物体侧表面的曲率半径，R2b是第三透镜元件的像侧表面的曲率半径。

公开(公告)号：US20140078375A1

公开(公告)日：2014-03-20

申请号：US14044430

申请日：2013-10-02

Applicant: OLYMPUS CORPORATION

Inventor： Keigo MATSUO ,  Takayuki MIMURA ,  Kanato ADACHI ,  Hisashi GOTO

IPC: G02B13/00

CPC classification number: G02B15/177 ,  G02B13/009

Abstract: Provided are a variable power optical system in which the value of the entire length with respect to the image height is reduced and the aberration is well corrected, and an image pickup device comprising the same. Specifically provided is a variable power optical system comprising, in order from the object side, at least a first lens group having negative refractive power, a variable power group having positive refractive power, and a final lens group having positive refractive power, wherein the variable power group is provided with, in order from the object side, a first lens element having positive refractive power, a second lens element, and a third lens element, the second lens element has a convex shape on the object side, and the final lens group comprises a positive lens, the variable power optical system satisfying the following conditional expression: 10≦VdLg≦45 −1.0

Abstract translation: 提供了一种可变功率光学系统，其中相对于图像高度的整个长度的值被减小并且像差被良好校正，以及包括该像素的图像拾取装置。 具体地提供了一种可变光源系统，其包括从物体侧起至少具有负折光力的第一透镜组，具有正折光力的可变光焦度组和具有正屈光力的最终透镜组，其中， 功率组从物体侧依次设置具有正折光力的第一透镜元件，第二透镜元件和第三透镜元件，第二透镜元件在物体侧具有凸形形状，并且最终透镜 组包括正透镜，满足以下条件表达式的可变光功率光学系统：10＆nlE; VdLg＆nlE; 45 -1.0 <（R2a-R2b）/（R2a + R2b）<1.0其中VdLg是正透镜的阿贝数 相对于d线的最终透镜组，R2a是第二透镜元件的物体侧表面的曲率半径，R2b是第三透镜元件的像侧表面的曲率半径。