sray light distribution of a small aperture mid-wave infrared(MWIR) telescope system is analyzed. The MWIR telescope is composed of Cassegrainian two-mirror system, field lens and relay lens system. The system has baffles, internal field stop, and col...
sray light distribution of a small aperture mid-wave infrared(MWIR) telescope system is analyzed. The MWIR telescope is composed of Cassegrainian two-mirror system, field lens and relay lens system. The system has baffles, internal field stop, and cold stop to reduce stray light. In the analysis, internal reflection on the optical surfaces and scattering on the mechanical surfaces is taken into consideration. All of mechanical surfaces of baffles, barrels, spiders and spacers are assumed to be painted with optical black