宽视场高分辨率闭路监控系统监控镜头设计

赵英明; 杨春平; 杨若夫; 段逢源

doi:doi:10.5768/jao201637.0201003

应用光学, 2016, 37 (2): 168, 网络出版: 2016-04-12

宽视场高分辨率闭路监控系统监控镜头设计

Design of CCTV lens with wide FOV and high resolution

论文大纲

赵英明 ^*杨春平杨若夫段逢源

作者单位

电子科技大学光电信息学院, 四川成都 610054

应用光学 CCTV镜头光学设计宽视场高分辨率 applied optics CCTV lens optical design wide field of view high resolution

摘要

为了满足新形势下闭路监控系统(CCTV) 对拍摄视场和高清分辨率的要求, 设计了一款复杂化的反摄远型全球面结构的CCTV镜头。该镜头的全视场为80°, F#为3, 焦距为5 mm, 光谱范围为486 nm~656 nm。采用像元尺寸为7.5 μm×7.5 μm, 1.27 cm(1/2英寸)的CCD成像。该镜头在奈奎斯特频率67 lp/mm处, 全视场MTF接近0.65; 在1/2奈奎斯特频率处调制传递函数(MTF) 大于0.85; 在220 lp/mm处, 全视场MTF大于0.3, 已经接近衍射极限。镜头像面波前PV值为0.077 9λ, RMS为0.015 9λ, 达到了瑞利判据的要求。设计评价结果表明, 该镜头像差校正满足CCTV监控镜头的成像质量要求。

Abstract

A close circuit television(CCTV) lens was designed with a complicated reverse telephoto configuration to meet the requirements of wide field of view (FOV)and high resolution which was applied to monitor system. The FOV of the designed lens is 80°, the F number is 3, the focal length is 5 mm, and the spectral range is from 486 nm to 656 nm.A 1/2 inch (1.27 cm) CCD was adopted with 7.5 μm×7.5 μm pixel size. The modulation transfer function(MTF) of full FOV is more than 0.65 at 67 lp/mm Nyquist frequency and more than 0.85 at 1/2 Nyquist frequency, and the MTF value of FOV is more than 0.3 at 220 lp/mm, approaching to the diffraction limit. The wavefront map shows that the peak-valley (PV) value is 0.077 9 λ and root-mean-suare (RMS) value is 0.015 9λ, which can meet the Rayleigh criterion. The evaluation of optical system shows that the lens has low aberration and high image quality, satisfying the requirement of CCTV monitor system with wide FOV and high resolution.

参考文献

[1] Smith W J. Modern lens design\[M\].USA: The McGraw Hill Companies, 2005．

[2] Fallah H R, Maxwell J. Higher order pupil aberrations in wide-angle and panoramic optical system \[J\].SPIE, 1996, 2774: 342-351．

[3] 李林, 黄一帆, 王涌天.现代光学设计方法\[M\].北京:北京理工大学出版社, 2009.

Li Lin, Huang Yifan, Wang Yongtian. Modern optical design method\[M\].Beijing: Beijing Institute of Technology Press, 2009.

[4] 闫阿奇, 祝青, 曹剑中, 等. 用于航天的高分辨率大视场光学系统设计\[J\].光子学报, 2008, 37(10): 1975-1977.

Yan Aqi, Zhu Qing, Cao Jianzhong, et al. Space optical system with large field of view and high resolution\[J\].Acta Photonia Sinica, 2008, 37(10): 1975-1977.

[5] 姚罡, 汤天瑾, 黄颖. 大视场大相对孔径近红外观测相机光学系统设计\[J\].红外与激光工程, 2013, 42(增刊1): 107-110.

Yao Gang, Tang Tianjin, Huang Ying. Optical system design used for the near infrared remote sensing with large field of view and small F number\[J\].Infrared and Laser Engineering, 2013, 42(S1): 107-110.

[6] 江伦, 黄玮, 许伟才. 周视监控全景镜头设计\[J\].应用光学, 2012, 33(1): 1-4.

Jiang Lun, Huang Wei, Xu Weicai. Panoramic lens for full view monitoring\[J\].Journal of Applied Optics, 2012, 33(1): 1-4.

[7] 罗春华, 张齐元, 李艳红. 6 mm~60 mm百万像素变焦安防镜头\[J\].应用光学, 2013, 34(2): 209-214.

Luo Chunhua, Zhang Qiyuan, Li Yanhong. Design of 6 mm~60 mm megapixel zoom security lens\[J\]. Journal of Applied Optics, 2013, 34(2): 209-214.

[8] 梁久伟, 罗春华, 杨铭. 用于监控系统的鱼眼镜头光学设计\[J\].光学技术, 2011, 37(6):691-694.

Liang Jiuwei, Luo Chunhua, Yang Ming. Optical design of fish-eye lens used for monitoring system\[J\].Optical Technique, 2011, 37(6):691-694.

[9] 周正平, 赵知诚, 靳阳明, 等. 大相对孔径宽视场无遮拦平场两反射镜望远物镜分析与设计\[J\].光学学报, 2015, 35(3):0322002.

Zhou Zhengping, Zhao Zhicheng, Jin Yangming, et al. Analysis and design of unobscured flat-field two-mirror telescopic objective with wide field of view and large relative aperture\[J\].Acta Optica Sinica, 2015, 35(3):0322002.

[10] 刘航, 郁道银, 杜吉, 等. 广角成像系统光学畸变的数字校正方法\[J\].光学学报, 1998, 18(8):1108-1112.

Liu Hang, Yu Daoyin, Du Ji, et al. Distortion correction of wide-angle optical system with digital technology\[J\].Acta Optica Sinica, 1998, 18(8):1108-1112.

赵英明, 杨春平, 杨若夫, 段逢源. 宽视场高分辨率闭路监控系统监控镜头设计[J]. 应用光学, 2016, 37(2): 168. Zhao Yingming, Yang Chunping, Yang Ruofu, Duan Fengyuan. Design of CCTV lens with wide FOV and high resolution[J]. Journal of Applied Optics, 2016, 37(2): 168.

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