摘要
根据多波段探测的技术要求,设计了中长波共孔径RC光学系统,通过二次成像方式实现了探测器件冷光阑匹配,减小了内部杂散辐射、系统体积质量。共孔径系统的焦距为400 mm,在中波探测器截止频率33 lp/mm时MTF为0.45,长波探测器截止频率20 lp/mm时MTF为0.4,系统性能良好。
Based on the requirements of double-band detection MIR and LIR wave RC optical system with com-mon aperture is designed. The cold stop match of the detector is achieved to reduce inner stray radiation, system vol-ume and weight with secondary imaging mode. The focal length of the common aperture system is 400 mm. Modulat-ed transfer function（MTF） is 0.45 at 33 lp/mm middle wave IR detector cut-off frequencies. MTF is 0.4 at 20 lp/mmlong wave IR detector cut-off frequencies. The system has good performance.
出处
《光电技术应用》
2016年第3期1-3,8,共4页
Electro-Optic Technology Application
关键词
红外
双波段
光栏
共孔径
截止频率
infrared
dual band
stop
common aperture
cut-off frequency
