In order to meet the actual needs of the performance testing and evaluation of infrared dual—band guided mu-nitions, the infrared scene generator optical system with 8 μm ~ 12 μm and 0.8 μm ~l.lμm dual—band complex com-mon aperture was designed in this paper.A medium— long wave infrared collimation optical system was using a diffrac-tive optical element in the system.The results show that: in the dual—band field of view 7.6°, with 82mm exit pupil diameter and with 400mm exit pupil distance, the MTF is greater than 0.9 on condition of 1.25 lp/ mm long—wave in-frared collimating optics system; MTF is greater than 0.8 on condition of 1.81p/mm near infrared collimated optical sys— tem.The conclusion indicating that the better performance of the optical system and meet the requirements%为满足红外双波段制导弹药性能测试与评估的实际需求,根据动态红外场景产生器的工作原理,设计了长波8μm～14μm和近红外0.8 μm～1.1μm双波段复合共口径红外场景产生器光学系统,系统中长波准直光学系统使用了衍射光学元件,结果表明:在双波段的视场为7.6°,出瞳直径为82mm,出瞳距离为400mm的情况下,长波红外准直光学系统在1.25lp/mm时,MTF大于0.9；近红外准直光学系统在1.8lp/mm时,MTF大于0.8,表明光学系统的像质满足使用要求.
展开▼
