【作者】 白瑜； 廖志远； 廖胜； 任栖峰； 林妩媚； 邢廷文； 蒋亚东；

【Author】 Bai Yu;Liao Zhiyuan;Liao Sheng;Ren Qifeng;Lin Wumei;Xing Tingwen;Jiang Yadong;Institute of Optics and Electronics, Chinese Academy of Sciences;University of Electronic Science and Technology of China;University of Chinese Academy of Sciences;

【机构】 中国科学院光电技术研究所； 电子科技大学光电信息学院； 中国科学院大学；

【摘要】 针对制冷型320×256中波红外凝视焦平面阵列探测器和320×256长波红外凝视焦平面阵列探测器,根据实际研制需求,设计了一套共孔径消热差折反射式红外双波段光学系统,系统工作波段为中波3.7-4.8μm,长波7.7-11.7μm,焦距均为292mm,视场角均为1.56°×1.875°,F/#均为1.93,满足100%冷光阑效率,环境温度为10℃-40℃。该系统共用主镜、次镜和准直镜组,利用分光镜实现中波红外、长波红外光谱分光,后接各自的校正镜组校正剩余像差,给出了设计原理、设计过程和工程设计时需考虑的一些因素,通过选择合适的光学材料和分配光焦度,实现了两路系统在10℃-40℃环境温度下取得了良好的成像性能,满足总体单位提出的设计要求。更多还原

【Abstract】 According to the manufacture requirement,a set of common aperture athermal catadioptric optical system with infrared dual band was presented for staring focal plane array MWIR and LWIR detector which had a format of 320×256.The working wavelength was 3.7-4.8μm and 7.7-11.7μm,effective focal length was 292 mm,field of view was 1.56°×1.875°,F/# was 1.93, cold shield efficiency was 100 % and the environment temperature was10 ℃-40 ℃.The LWIR system shared the primary mirror, secondary mirror and collimating lens with MWIR system.Spectroscope was used in order to achieve abruption in MWIR and LWIR, correcting lens were used in order to eliminate other aberrations each other.The design principle, design process and some considering factors in engineering design moment were presented.The common aperture athermal catadioptric optical system obtained good image quality durning 10℃ to 40℃ of environment temperature by choosing appropriate optical glass and assigning the power,which could satisfy the design requirement of consumer.更多还原