CAJ | 학술논문

针对红外目标探测等军事应用的实际需求，为了扩大对目标的搜索范围，设计了8～12μm红外波段的20×连续变焦光学系统。该系统采用320×240非制冷焦平面红外探测器，在15～300 mm范围内实现连续变焦，F数为2。系统结构简单，仅由6片透镜组成，并仅引入1个非球面校正系统像差。在空间频率为16 lp/mm 处，变焦范围内的 MTF 调制传递函数均在0.45以上，接近衍射极限，像质优良，像面稳定，可用于坦克红外观瞄系统。
침대홍외목표탐측등군사응용적실제수구，위료확대대목표적수색범위，설계료8～12μm홍외파단적20×련속변초광학계통。해계통채용320×240비제랭초평면홍외탐측기，재15～300 mm범위내실현련속변초，F수위2。계통결구간단，부유6편투경조성，병부인입1개비구면교정계통상차。재공간빈솔위16 lp/mm 처，변초범위내적 MTF 조제전체함수균재0.45이상，접근연사겁한，상질우량，상면은정，가용우탄극홍외관묘계통。
Aiming at actual needs of infrared target detection and other military applications, in order to expand the search scope of targets,an infrared continuous zoom optical system of 20× zoom ratio for 8-12μm wave-band is designed in this paper. For 320×240 pixels uncooled infrared focal plane arrays, the focal length from 15 to 300 mm could be changed continuously and the F number is 2. Moreover, the system’s structure is simple, which only consists of six lenses and one aspherical surface is applied to correct aberrations. At the spatial frequency 16 lp/mm, the MTF curves in the whole zooming range are all above 0.45 which are closed to diffraction limited curve. The image quality is perfect and the stability of image plane is well. Meanwhile, this system can be applied to infrared observing and aiming optical system of Tank.