王晓檬, 陈宇, 王春艳, 赵义武, 孙昊, 刘欢, 张桐. 全天候全景监控摄像用光学系统设计[J]. 应用光学, 2023, 44(3): 484-490. DOI: 10.5768/JAO202344.0301003
引用本文: 王晓檬, 陈宇, 王春艳, 赵义武, 孙昊, 刘欢, 张桐. 全天候全景监控摄像用光学系统设计[J]. 应用光学, 2023, 44(3): 484-490. DOI: 10.5768/JAO202344.0301003
WANG Xiaomeng, CHEN Yu, WANG Chunyan, ZHAO Yiwu, SUN Hao, LIU Huan, ZHANG Tong. Design of optical system for all-weather and panoramic surveillance camera[J]. Journal of Applied Optics, 2023, 44(3): 484-490. DOI: 10.5768/JAO202344.0301003
Citation: WANG Xiaomeng, CHEN Yu, WANG Chunyan, ZHAO Yiwu, SUN Hao, LIU Huan, ZHANG Tong. Design of optical system for all-weather and panoramic surveillance camera[J]. Journal of Applied Optics, 2023, 44(3): 484-490. DOI: 10.5768/JAO202344.0301003

全天候全景监控摄像用光学系统设计

Design of optical system for all-weather and panoramic surveillance camera

  • 摘要: 设计了一款能实现全天候清晰成像的全景监控摄像光学系统。采用全景环带结构形式,该结构分为摄像头部单元和中继透镜单元两部分,摄像头部单元完成全视场目标搜索,中继透镜单元将头部单元所成的中间虚像进行二次成像会聚到探测器上。设计时采用多重结构优化方式,实现可见光及近红外双波段成像。该光学系统视场为360°×(40°~100°),焦距为−2.75 mm,F数为3.28。设计结果表明:系统的MTF(modulation transfer function)值在全视场处接近衍射极限,各个视场的弥散斑半径均小于所选CCD像元尺寸,畸变小于2 %,且日夜离焦量小于0.002 mm,该设计结果可满足全天候全景监控需求。

     

    Abstract: An optical system for panoramic surveillance cameras that can achieve clear all-weather imaging was designed. A panoramic annular structure was adopted, which was divided into two parts: camera head unit and relay lens unit. The camera head unit completed the full field of view target search, and the relay lens unit performed secondary imaging of the intermediate virtual image formed by the head unit and converged it on the detector. The design adopted multiple structural optimization methods to achieve visible light and near-infrared dual band imaging. The field of view of the optical system is 360°× (40°~100°), the focal length is −2.75 mm, and the F number is 3.28. The design results show that the modulation transfer function (MTF) value is close to the diffraction limit at the full field of view, the diffuse spot radius of each field of view is less than the selected CCD pixel size, the distortion is less than 2%, and the day-night defocus amount is less than 0.002 mm, which can meet the requirements of all-weather and panoramic surveillance.

     

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