激光靶散射光观测镜杂散光抑制研究  

Study of Stray Light Reduction for Laser Target Scattered Light Observation Lens

作　　者：闫亚东[1] 陈良益[1] 吴国俊[1] 仓玉萍[1] 何俊华[1] 

机构地区：[1]中国科学院西安光学精密机械研究所

出　　处：《光电工程》2008年第6期54-58,共5页Opto-Electronic Engineering

摘　　要：分析了系统杂散光的来源,得出非成像光束对系统影响较大、平板玻璃窗产生的鬼像不容忽视的结论。针对传统作图法设计遮光罩的针对性不强,且追迹不同入射角的光线繁琐、容易遗漏的问题,本文提出一种逆向追迹法,依据光的可逆性,在像面处设置点阵面光源,每一点都发出充满系统孔径的光束,在物面设置足够大的探测面,使之有充足的余量记录所有到达物方的光线,利用该方法可以在探测面上直观地区分出非成像杂散光。有针对性地设计了具有特殊要求的内外遮光罩,并对遮光效果进行了软件模拟。We analyzed the stray light source of system and drew a conclusion that non-image beam has great effect on system qualities and system ghost images caused by parallel windows should not be ignored. In view of the facts that traditional graphical construction has less pertinence to stray light and tracing different incidence angle rays is fatignesome and more likely to omit some rays, we proposed a reverse ray-trace method based on the ray reversibility. According to the method, a dot-matrix source was set at the image plane. Each dot emitted rays to fully cover the system aperture, A detector surface, large enough to receive all possible rays from the source, was set at object plane. Using the method, non-image stray light was easy to be recognized, Outside and inside lens hoods with special demands were designed, and its performance was simulated with softwale,

关 键 词：杂散光 逆向追迹法 鬼像 遮光罩 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]