基于LightTools软件的微光光学系统杂散光分析  

Stray light analysis of low-level-light optical system with LightTools software

作　　者：朱佳丽[1] 张平[1] 李刚[1] 韦湘宜 费程波 干杰 袁玉芬 季亚萍 ZHU Jiali;ZHANG Ping;LI Gang;WEI Xiangyi;FEI Chengbo;GAN Jie;YUAN Yufen;JI Yaping(Jiangsu North Huguang Opto-Electronics Co.,Ltd.,Wuxi 214194,China;The Military Representative Office of Army Armament Department in Wuxi,Wuxi 214116,China)

机构地区：[1]江苏北方湖光光电有限公司,江苏无锡214194 [2]陆军装备部驻无锡地区军代室,江苏无锡214116

出　　处：《应用光学》2022年第6期1061-1065,共5页Journal of Applied Optics

基　　金：陆军某型号项目。

摘　　要：为解决低照度微弱信号探测的微光光学系统杂散光问题,研究了杂散光的原理和特性。利用光学系统建模软件LightTools对微光光学系统进行仿真建模,并开展杂散光分析。为减少杂散光,在物镜筒的筒壁加工消光螺纹,并针对不同形式的消光螺纹,开展了能量仿真模拟。仿真结果表明,采用螺距0.35 mm的消光螺纹,能够将杂散光系数从7%降低到4%。仿真分析结果与实验结果一致,为其他微弱信号探测光学系统在设计阶段对杂散光进行消除提供了指导。To solve the problem of stray light in low-level-light optical system detected by low illumination weak signal,the principle and characteristics of stray light were studied.The optical system modeling software LightTools was used to simulate the low-level-light optical system and analyze the stray light.In order to reduce stray light,the extinction threads were processed on the barrel wall of the objective lens barrel,and the energy simulation was carried out for different forms of extinction threads.The simulation results show that the stray light coefficient can be reduced from 7%to 4%by using the extinction thread with the pitch of 0.35 mm,which are consistent with the experimental results,and can provide guidance for the elimination of stray light in the design of optical systems with weak signal detection.

关 键 词：杂散光 微光光学系统 消光螺纹 LightTools软件 

分 类 号：TN223[电子电信—物理电子学] O435[机械工程—光学工程] TH74[理学—光学]