CAJ | 학술논문

针对制冷型近景成像红外光学系统，讨论了近景系统调焦量对系统冷反射的影响，分析了在定焦近景成像系统中采用无调焦设计的必要性，以及如何选取合适参数提高系统景深、如何选取材料进行无热化设计从而实现无调焦的设计方法。基于320×256中波制冷探测器，设计了一个焦距为20 mm、F/4的无热化红外光学系统，该系统景深范围可以覆盖成像范围（1～10 m），且在-40～55℃的温度范围内实现无调焦清晰成像。
침대제랭형근경성상홍외광학계통，토론료근경계통조초량대계통랭반사적영향，분석료재정초근경성상계통중채용무조초설계적필요성，이급여하선취합괄삼수제고계통경심、여하선취재료진행무열화설계종이실현무조초적설계방법。기우320×256중파제랭탐측기，설계료일개초거위20 mm、F/4적무열화홍외광학계통，해계통경심범위가이복개성상범위（1～10 m），차재-40～55℃적온도범위내실현무조초청석성상。
Based on the design of cooled infrared near range imaging system without focusing mechanism,the influence of the near range imaging system focusing on the narcissus phenomenon is discussed.The un-necessity of focusing mechanism in fix focus near range imaging system is analyzed,and the method of how to select suitable parameters to raise the depth of field and how to select materials to athermalization design is proposed for no focusing mechanism de-sign.Based on medium-wave 320 ×256 focal plane array cooled detector,a athermalization infrared system with effec-tive focus length 20mm,F/4 is designed.This system can work well in distance of 1~10 m and temperature of -40~55 ℃ without focusing mechanism.