CAJ | 학술논문

红外光学系统具有可全天候工作、远距离观察等优势，在军事及民用领域均得到广泛应用。但由于温度对红外系统影响较大，所以需要对其进行消热差设计。依据消热差及色差原理选择适合的透镜材料，利用衍射元件的消热差和色差的特性，设计了波段为8~12μm，全视场为2ω=6°，焦距为 f=100mm ， F数为2，温度补偿范围-40℃~60℃的长波红外折衍混合摄远物镜。使用保罗I棱镜来折叠光路，使系统结构紧凑，摄远比达到了0.8。该系统在-40℃~60℃范围内，调制传递函数（MTF）优于0.5，接近衍射极限，成像质量良好。
홍외광학계통구유가전천후공작、원거리관찰등우세，재군사급민용영역균득도엄범응용。단유우온도대홍외계통영향교대，소이수요대기진행소열차설계。의거소열차급색차원리선택괄합적투경재료，이용연사원건적소열차화색차적특성，설계료파단위8~12μm，전시장위2ω=6°，초거위 f=100mm ， F수위2，온도보상범위-40℃~60℃적장파홍외절연혼합섭원물경。사용보라I릉경래절첩광로，사계통결구긴주，섭원비체도료0.8。해계통재-40℃~60℃범위내，조제전체함수（MTF）우우0.5，접근연사겁한，성상질량량호。
Infrared optical system has many advantages such as working all day,remote observation and so on,so it is widely used in military and civilian fields. However, due to the greater impact of temperature on the infrared system, so it needs to be designed with athermalized methods. Based on the principle of athermalized and chromatic aberration, the appropriate lens material is selected, the long-wave infrared refractive -diffractive hybrid telephoto lens is designed by using the athermalized and chromatic characteristic of diffractive element, which working band is 8~12μm, the whole field of view 2ωis 6°,the focal length f 'is100mm,F number is 2 under temperature compensation range -40℃~60℃. Paul I prism is used to fold optical path,so the system is compacted and the telephoto ratio is 0.8. Its modula-tion transfer function is above 0.5 in the temperature range from -40℃~60℃,The system requires good image quality.