CAJ | 학술논문

论述了利用衍射元件实现光学系统无热化的原理和设计方法,并利用衍射光学元件特殊的消热差和消色差特性,设计了8～12 μm波段、焦距45 mm、F#为1.8、视场30°、工作在-55℃～55℃范围内的折/衍混合红外监视系统.设计结果表明,在此温度范围内,系统具有良好的消热差作用,成像质量接近衍射极限;而且具有结构简单、体积小、重量轻和可靠性高等优点.
논술료이용연사원건실현광학계통무열화적원리화설계방법,병이용연사광학원건특수적소열차화소색차특성,설계료8～12 μm파단、초거45 mm、F#위1.8、시장30°、공작재-55℃～55℃범위내적절/연혼합홍외감시계통.설계결과표명,재차온도범위내,계통구유량호적소열차작용,성상질량접근연사겁한;이차구유결구간단、체적소、중량경화가고성고등우점.
The principle and design method of employing diffractive optical element to athermallize on optical systems are presented.Based on the special athermal properties and achromatize characteristics of the diffractive optical element,a refractive-diffractive hybrid surveillance system at 8～12 μm waveband during the temperature range of -55℃～55℃ is designed in the paper.The system parameters are focal length 45mm,F~# 1.8.field of view 30°.The results show the system achieved better athermal performances at the temperature range.The image quality of the system approaches the diffractive limit.In addition,the optical system has many advantages,such as simple structure,small volume,light weight and high reliability.