大孔径大靶面昼夜型监控镜头光学系统设计

黄文华; 林峰

doi:doi:10.5768/jao201637.0101008

应用光学, 2016, 37 (1): 45, 网络出版: 2016-03-22

大孔径大靶面昼夜型监控镜头光学系统设计

Design of day and night lens with large aperture and sensor

论文大纲

黄文华 ^*林峰

作者单位

福建师范大学光电与信息工程学院, 医学光电科学与技术教育部重点实验室, 福建福州 350007

光学设计 Zemax软件像差公差分析大靶面 optical design Zemax software aberration tolerance analysis large target plane

摘要

为了满足交通监控对图像质量不断提高的要求, 设计了一款大孔径、大靶面、昼夜型光学系统。采用近对称结构, 调整第一组元结构参数, 平衡昼夜共焦面的设计思路, 较好地控制了垂轴像差和离焦量, 实现了大孔径、大靶面、昼夜型光学系统的设计要求。成像系统对可见光和近红外波长0.79 μm进行了双重组结构优化设计, 实现了日夜离焦量小于0.005 mm, 在空间频率为130 lp/mm时, 全视场MTF＞0.3。对该光学系统进行容差分析和讨论, 提出把控元件偏心公差可有效抑制由于生产制造使得实际成像和理论成像偏差过大等问题。

Abstract

Aiming at the increasing requirements of image quality in traffic monitoring, a day-and-night optical system with large aperture and big target plane was designed. Through using the near-symmetric configuration, the design idea for adjustmenting the structural parameters of the first component and balancing day-and-night confocal plane was adopted to realize a large aperture and sensor optical system with excellent controlling of the vertical axis aberration and defocus amount. The multi-configuration optimization design was conducted in visible wavelengths and near-infrared wavelength of 0.79um. The day-and-night defocus amount of less than 0.005 mm could be achieved, the modulation transfer function (MTF) in full field of view is beyond 0.3 at the spatial frequency of 130 lp/mm in full field. Moreover, tolerance analysis and discussion for the optical system were done, and the deciding tolerance was suggested to be controlled for reducing the big deviation between actual image and theoretical image resulted from manufacturing and producting.

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黄文华, 林峰. 大孔径大靶面昼夜型监控镜头光学系统设计[J]. 应用光学, 2016, 37(1): 45. Huang Wenhua, Lin Feng. Design of day and night lens with large aperture and sensor[J]. Journal of Applied Optics, 2016, 37(1): 45.

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