应用于海洋监测的水下变焦镜头设计

发布时间：2018-06-13 04:50

本文选题：海洋光学 + 水下光学成像　；参考：《激光与光电子学进展》2017年10期

【摘要】：设计了大相对孔径的三档变焦光学系统来监控海洋生态监测仪器的工作状态。该系统的设计通过Zemax软件实现,总长度为200mm,系统采用6.4mm×4.8mm的CCD感光板,三档变焦焦距分别为8,14,28mm,变焦过程中相对孔径为1/1.4,短焦时最大视场角为52°。最大视场角下,当奈奎斯特频率为42lp/mm时,系统的0视场的调制传递函数(MTF)值为0.8,0.707视场的平均MTF值为0.7,1视场的平均MTF值达0.6;10μm范围内,几何包围能量均在90%;畸变控制在合理的范围。该系统变焦比高、结构简单、相对孔径大,适用于海水中海洋生态监测仪器的监控,能够及时地反馈海洋生态监测仪器的工作状态信息,大大降低了海洋生态监测仪器的维护成本。
[Abstract]:A three-stage zoom optical system with large relative aperture is designed to monitor the working state of marine ecological monitoring instruments. The design of the system is realized by Zemax software, the total length of the system is 200mm. The system adopts 6.4mm 脳 4.8mm CCD photosensitive board. The three-stage zoom focal length is 814 ~ 28mm, the relative aperture is 1 / 1.4 and the maximum field of view angle is 52 掳when the focus is short. At the maximum viewing angle, when Nyquist frequency is 42lp/mm, the modulation transfer function (MTF) of 0 field of view of the system is 0.8 / 0.707. The average MTF of 0 field of view is 0.710 渭 m, the geometric encircling energy of the system is in the range of 0.60 渭 m, and the distortion is controlled in a reasonable range. The system has the advantages of high focal ratio, simple structure and large relative aperture. It is suitable for the monitoring of marine ecological monitoring instruments in seawater, and can feedback the working state information of marine ecological monitoring instruments in time. The maintenance cost of marine ecological monitoring instruments is greatly reduced.
【作者单位】：山东省海洋环境监测重点实验室;山东省科学院海洋仪器仪表研究所;
【基金】：国家重点研发计划(2016YFC1400801) 海洋公益性行业科研专项(201505007) 山东省重点研发计划(2015GGX103031) 山东省自然科学基金(ZR2014YL006)
【分类号】：P715.5

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