同心多尺度成像模式下的高分辨子成像系统设计

发布时间：2019-06-21 17:16

【摘要】：以同心多尺度成像模式为基础,结合人眼视网膜凹成像思想,提出了一种宽视场与双分辨率成像组合的新型同心多尺度成像系统,在广域视场范围内实现了对关注的感兴趣目标区域的高分辨动态注视。介绍了同心多尺度双分辨率成像系统的工作方式;使用一个单透镜和一个双胶合透镜为初始结构,结合二轴微机电系统(MEMS)扫描微镜组合形成光路;利用ZEMAX光学设计软件,优化设计了成像波段为0.486~0.656μm,在单个分通道视场内(30°)可对关注的小视场区域(6°)高分辨注视跟踪的子成像系统。对成像系统的像质以及点列图、调制传递函数(MTF)曲线、场曲、畸变曲线进行了评价。结果表明设计的子成像系统在全视场内成像均匀,接近衍射极限,场曲和畸变较小,最大场曲不超过0.6mm,最大畸变小于1.5%,能够满足同心多尺度双分辨率成像系统对子成像系统性能的要求。
[Abstract]:Based on concentric multi-scale imaging mode and the idea of human retinal fovea imaging, a new concentric multi-scale imaging system based on wide field of view and dual resolution imaging is proposed, which realizes the high resolution dynamic fixation of the interested target region in the wide field of view. The working mode of concentric multi-scale dual-resolution imaging system is introduced, using a single lens and a double glued lens as the initial structure, combined with the combination of (MEMS) scanning micromirror of two-axis micro-electromechanical system to form an optical path, and using ZEMAX optical design software, a sub-imaging system with imaging band of 0.486 ~ 0.656 渭 m and high resolution gaze tracking in the small field of view (6 掳) of concern in a single channel field of view (30 掳) is optimized. The image quality, point sequence, modulation transfer function (MTF) curve, field curve and distortion curve of the imaging system are evaluated. The results show that the designed sub-imaging system is uniform in the full field of view, close to the diffraction limit, the field curvature and distortion are small, the maximum field curvature is not more than 0.6 mm, and the maximum distortion is less than 1.5%, which can meet the requirements of concentric multi-scale dual-resolution imaging system for the performance of the sub-imaging system.
【作者单位】：西安电子科技大学物理与光电工程学院;
【基金】：国家自然科学基金资助项目(No.61007014,No.61575152)
【分类号】：TP391.41

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