一种可变远距离大功率激光聚焦系统的设计  

Design of High Power Laser Focus System over Variable Long Distance

作　　者：胡明勇[1] 封志伟[1] 范二荣 赵奇[1] 李明杰[1] Hu Mingyong;Feng Zhiwei;Fan Errong;Zhao Oi;Li Mingjie(Academy of Photoetectric Technotogy, Hefei University of Technotogy, Hefei, Anhui 230000, Chin)

机构地区：[1]合肥工业大学光电技术研究院,安徽合肥230000

出　　处：《激光与光电子学进展》2018年第6期382-388,共7页Laser & Optoelectronics Progress

摘　　要：基于初级像差理论,将卡式系统与前端透镜组相结合,设计了一种可变远距离大功率激光聚焦光学系统。目标物体在500~5000m范围内变化时,通过调节前端透镜组到卡式系统的距离来改变焦面位置,实现对聚焦光斑大小的控制;通过透镜组的位置可反推出不同的目标距离。使用Zemax光学软件对初始结构进行优化,设计结果表明,在不同目标距离下,光斑大小均能满足设计指标要求。The classic Cassegrain system combined with a front lens group is chosen and a high-power laser-beam focus system over a variable long distance is designed based on the primary aberration theory. When the moving distance of the target objects is within 500-5000 m, it is achievable to control the focusing spot size by the adjustment of the distance between the front lens group and the Cassegrain system and the different object distances can be reversed from the location of the lens group. The initial structure is optimized with the Zemax optical software, and the design results show that the spot sizes under different object distances all meet the design requirements.

关 键 词：光学设计 高斯光束 折反系统 变焦系统 

分 类 号：O435.1[机械工程—光学工程]