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.
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。
The function and structure of the software for the ghost image simulation and analysis are outlined.
介绍了鬼像的模拟与分析软件的功能及结构。
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