折反射式连续大变倍比扩束系统设计  

Design of Catadioptric Variable Focus Beam Expanding Optical System

作　　者：赵伊宁[1] 王鑫[1] 向阳[1] 

机构地区：[1]长春理工大学光电工程学院,长春130022

出　　处：《长春理工大学学报（自然科学版）》2012年第1期46-48,89,共4页Journal of Changchun University of Science and Technology(Natural Science Edition)

摘　　要：平时应用或实验时,往往需要不同口径的准直激光光束,为了解决设备繁琐问题,设计了一个连续变倍的激光扩束系统,可以得到不同口径的激光光束。此系统扩束比在68~202之间变化,得到的光斑比传统的更大,可以满足大口径激光光束的应用要求。该扩束系统有两部分组成,第一部分是无焦的扩束系统,可以实现光束口径的变化,此系统由4片单透镜组成,采用＂正一负一正＂的结构形式,可减小系统的整体尺寸。第二部分采用抛物面的折反射系统,完成对光束的大倍率扩束,并分析了采用抛物面的优点。应用光学设计软件ZEMAX给出了系统的优化设计,并进行了准直精度的分析。Usually the application or experiment, often requires different diameter collimated laser beam, In order to solve the complicated problem of equipment, designed a continuous variable laser expansion speed system, which can get different laser beam diameter.This system expansion ratio varied between 68-202, get a larger spot than the traditional, large-diameter laser beam to meet application requirements.The beam expander consists of two parts, the first step is not part of the beam expander focus system, can change the beam diameter, this system consists of four single-lens composi- tion, using ＂Positive-Negative-Positive＂strueture, can reduce the overall size of the system.The second part is parabolic catadioptric system, to complete the beam magnification beam expander, and analyze the advantages of using parabolic. ZEMAX optical design software application gives the system of optimized design and precision for the alignment analysis.

关 键 词：折反射 扩束系统 抛物面 ZEMAX 像差 

分 类 号：O435.2[机械工程—光学工程]