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.
出处
《光电工程》
CAS
CSCD
北大核心
2009年第6期1-3,共3页
Opto-Electronic Engineering
关键词
变焦距
光学补偿
变焦距物镜
光学系统
zoom
optical compensation
zoom objectives
optical systems
