用于目标跟踪/识别中红外AOTF光谱相机光学系统的设计与优化  

Medium Infrared Optical System Optimized Design of AOTF Spectrum Camera for Target Tracking and Identifying

作　　者：赵昭[1] 安志勇[1] 王劲松[1] 高铎瑞 钟刘军[1] 

机构地区：[1]长春理工大学光电工程学院,长春130022 [2]长春理工大学空间光电技术研究所,长春130022

出　　处：《光子学报》2014年第7期188-193,共6页Acta Photonica Sinica

基　　金：国家科技攻关项目(No.2007BA107A00-1)

摘　　要：为获得红外目标的空间信息和光谱信息,设计了一种用于中波红外声光可调谐光谱相机的光学系统.设计中引入折/衍射混合透镜,在用6片透镜的情况下达到了12×变倍,在长焦处时能识别2 000m远的目标.采用ZEMAX光学设计软件模拟声光晶体的衍射,在晶体出射面上优化设计了4°的楔角,使-1级衍射光能共轴出射.该光学系统在空间频率17lp/mm处调制传递函数值最大达到0.7,能量集中度大于90%,能够满足光谱相机用于识别/跟踪目标的要求.A medium infrared optical system was designed for acousto-optic tunable filter spectra camera to obtain the spatial information and spectral information.By introducing a hybrid refractive/diffractive lens,there are six lens in the fore zoom optical system to achieve 12×zoom ratio,which can identify the object 2 000mfar at long focal length.ZEMAX software was used to simulate the diffraction of the crystal,a wedge with 4°is needed to certify that the-1order diffraction beams exit coaxially.Results show that the maximum modulation transfer function at spatial frequency14lp/mm of the whole system is0.7,the diffraction encircled energy was greater than 90%,which satisfy the image quality of the spectrum camera for target identifying and tracking.

关 键 词：光学设计 红外光学系统 光谱相机 变焦距光学系统 声光可调谐滤波器 目标识别 

分 类 号：TH744.1[机械工程—光学工程]