空间沾染对光学系统的影响分析

Effect of optical system caused by space organism pollution

空间光学系统由于直接暴露于轨道真空和热环境中,空间沾染物对光学镜面的污染会使空间光学系统的性能发生改变。建立了一套光学系统沾染损伤分析模型,并计算了一种沾染物质在不同波长下对光学系统的沾染损伤。对空间沾染源进行了分类,通过讨论内、外沾染源对全反射系统、折反射系统、全折射系统的影响,提出了对空间光学系统防护的一些建议。

An analysis model is set up to calculate the optical damage of in the space environment. The organism pollution is the secondary effect of the out-gassing effect from the organism materials of spacecraft. The sample organism pollution damage at several different optical wave length points for space optical system is calculated,and the space pollution sources are sorted. As a conclusion, the space organism pollution to the total reflection system, the total refraction system and reflection and refraction mixture system caused by inner or extra source are analyzed,and the protection suggestion is discussed.