The effect of spherical aberration on the radius of imagebeam waist in the design of laser optical system is discussed in detail, and the expression is presented.
We analyzed the stray light source of system and drew a conclusion that non-imagebeam 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。
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The idea was that a person acting as a 'sender' would attempt to beam the image over to the 'receiver' relaxing in the sealed room.