公开(公告)号：US20140022436A1

公开(公告)日：2014-01-23

申请号：US13711936

申请日：2012-12-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jin-woo Kim ,  Dong-ok Choi

IPC: G02B15/14 ,  G02B27/64

CPC classification number: G02B15/14 ,  G02B15/173 ,  G02B27/646

Abstract: A zoom lens includes a first lens group having a positive refractive power; a second lens group having a negative refractive power; a third lens group including a first sub-lens group having a positive refractive power, an iris, and a second sub-lens group having a positive refractive power; and a fourth lens group having a positive refractive power, wherein the first to fourth lens groups are sequentially arranged from an object side to an image side, the distance between each of the first through fourth lens groups changes when zooming, the surface of the lens closest to the image side in the first sub-lens group is concave, the lens closest to the object side in the second sub-lens group is a meniscus lens concave towards the object side, and the lens located closest to the object side in the third lens group is an aspheric lens.

Abstract translation: 变焦透镜包括具有正折光力的第一透镜组; 具有负屈光力的第二透镜组; 包括具有正折光力的第一子透镜组，具有正折光力的虹膜和第二子透镜组的第三透镜组; 以及具有正折光力的第四透镜组，其中第一至第四透镜组从物体侧依次排列到像侧，第一至第四透镜组中的每一个之间的距离在变焦时改变，透镜的表面 最接近第一子透镜组中的像侧的凹面是最靠近物镜侧的透镜，是朝向物体侧凹陷的弯月透镜，并且位于最靠近物体侧的透镜 第三透镜组是非球面透镜。

公开(公告)号：US08786714B2

公开(公告)日：2014-07-22

申请号：US13711936

申请日：2012-12-12

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jin-woo Kim ,  Dong-ok Choi

IPC: H04N5/228 ,  H04N5/232

CPC classification number: G02B15/14 ,  G02B15/173 ,  G02B27/646

Abstract: A zoom lens includes a first lens group having a positive refractive power; a second lens group having a negative refractive power; a third lens group including a first sub-lens group having a positive refractive power, an iris, and a second sub-lens group having a positive refractive power; and a fourth lens group having a positive refractive power, wherein the first to fourth lens groups are sequentially arranged from an object side to an image side, the distance between each of the first through fourth lens groups changes when zooming, the surface of the lens closest to the image side in the first sub-lens group is concave, the lens closest to the object side in the second sub-lens group is a meniscus lens concave towards the object side, and the lens located closest to the object side in the third lens group is an aspheric lens.

Abstract translation: 变焦透镜包括具有正折光力的第一透镜组; 具有负屈光力的第二透镜组; 包括具有正折光力的第一子透镜组，具有正折光力的虹膜和第二子透镜组的第三透镜组; 以及具有正折光力的第四透镜组，其中第一至第四透镜组从物体侧依次排列到像侧，第一至第四透镜组中的每一个之间的距离在变焦时改变，透镜的表面 最接近第一子透镜组中的像侧的凹面是最靠近物镜侧的透镜，是朝向物体侧凹陷的弯月透镜，并且位于最靠近物体侧的透镜 第三透镜组是非球面透镜。