【摘要】 为提高联合变换相关器的探测能力,针对2/3英寸红外CCD探测器,设计了一种红外光学补偿变焦系统,应用于联合变换相关器的红外目标探测。该系统在焦距100~200mm内连续变焦,工作波段为8~12μm,F数为3。系统仅由7片透镜组成,引入两个非球面。像质评价结果表明:在整个变焦范围内,在截止频率17lp/mm时,各视场MTF接近衍射受限曲线,像质优良、像面稳定,满足光学系统的总体设计要求。更多还原

【Abstract】 In order to improve the detective ability of the joint transform correlator,an infrared zoom system of optical compensation is designed for a 2/3 inch infrared CCD detector,which used in joint transform correlator for infrared target detection.This system can zoom continuously in the range of 100~200mm working at 8~12μm waveband,its F number is 3.The system only contains seven lenses with two aspheric surfaces.The image quality evaluation results prove that:in full zooming range,the modulation transfer function of the zoom is close to the diffraction-limited curve at cut-off frequency 17lp/mm,with good image quality and stable image plane.The requirements of the optical system overall design is quite met.更多还原