光学补偿式步进变焦距物镜  

Optical Compensated Step Zoom Lens

作　　者：史光辉[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,长春130033

出　　处：《光电工程》2009年第6期1-3,共3页Opto-Electronic Engineering

摘　　要：根据光学补偿变焦距理论,作者设计出光学补偿式步进变焦物镜。和传统的用加倍率镜的方法实现步进变焦相比。这种变焦距物镜有两个优点,一是可以实现高倍率变焦,二是容易消除在变焦过程中产生的像点移动现象。本文说明了其原理,并给出了变焦倍率为2.5×的一步变焦,16×的二步变焦和8×的三步变焦物镜设计实例。According to the theory of optical compensated zoom, author designed optical compensated step zoom lenses Compared with traditional step zoom which makes use of extender to change focal length, this kind of step zoom lens has two advantages. Firstly, the zoom ratio may be enlarged. Secondly, the image point movement may be easily eliminated. The principle of optical compensated step zoom lens is explained. Three examples, one step zoom with zoom ratio 2.5x, two steps zoom with 16x and three steps zoom with 8x are given in this paper.

关 键 词：变焦距 光学补偿 变焦距物镜 光学系统 

分 类 号：TB851[一般工业技术—摄影技术] TN911.73[电子电信—通信与信息系统]