CO_2 激光加工机连续可变焦距光学系统

The Continuous Zoom Type Optical System of the CO 2 Laser Processing Machine

研究了一种长工作距离（１２１ｍｍ）、短焦距、在１９～５７ｍｍ范围内连续可变焦距的ＣＯ２激光加工机新型光学聚焦系统，论述了系统的特点及基本原理，给出了有关设计参数．

A novel type optical focusing system of long wording length (121mm), short focal distance and continuous zoom range from 19mm to 57mm is studied. The features and basic principles of the system are discussed, and the design parameters are given.