公开(公告)号：US20150323769A1

公开(公告)日：2015-11-12

申请号：US14807901

申请日：2015-07-24

Applicant: Young Optics Inc.

Inventor： Yuan-Long Cai ,  Chien-Hsiung Tseng ,  Yu-Hung Chou

IPC: G02B15/14

CPC classification number: G02B15/14 ,  G02B15/173

Abstract: A zoom lens including a first lens group, a second lens group, and a third lens group is provided. The first lens group is disposed between an object side and an image side and has at least one aspheric surface. The second lens group has a positive refractive power and is disposed between the first lens group and the image side. The third lens group has a positive refractive power and is disposed between the second lens group and the image side. The third lens group has at least one aspheric surface. The third lens group is suitable to move relative to the second lens group for focusing.

Abstract translation: 提供了包括第一透镜组，第二透镜组和第三透镜组的变焦透镜。 第一透镜组设置在物体侧和像侧之间，并且具有至少一个非球面。 第二透镜组具有正折光力并且设置在第一透镜组和像侧之间。 第三透镜组具有正折射光焦度并且设置在第二透镜组和像侧之间。 第三透镜组具有至少一个非球面。 第三透镜组适于相对于第二透镜组移动以进行聚焦。

公开(公告)号：US10146030B2

公开(公告)日：2018-12-04

申请号：US14807901

申请日：2015-07-24

Applicant: Young Optics Inc.

Inventor： Yuan-Long Cai ,  Chien-Hsiung Tseng ,  Yu-Hung Chou

IPC: G02B15/14 ,  G02B15/173

Abstract: A zoom lens including a first lens group, a second lens group, and a third lens group is provided. The first lens group is disposed between an object side and an image side and has at least one aspheric surface. The second lens group has a positive refractive power and is disposed between the first lens group and the image side. The third lens group has a positive refractive power and is disposed between the second lens group and the image side. The third lens group has at least one aspheric surface. The third lens group is suitable to move relative to the second lens group for focusing.