| 混合仿生鱼眼-复眼的广角高清成像系统 |
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| 引用本文： | 路文文,陈善勇,翟德德,熊玉朋.混合仿生鱼眼-复眼的广角高清成像系统[J].应用光学,2019,40(2):311-315. |
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| 作者姓名： | 路文文 陈善勇 翟德德 熊玉朋 |
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| 作者单位： | 国防科技大学 智能科学学院，湖南 长沙 410073 |
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| 摘 要： | 基于多尺度成像理论，采用混合仿生鱼眼-复眼结构，实现了大视场兼具高分辨率的光学成像系统设计。前级物镜系统为大直径球透镜，收集广角目标光线并成像到与球透镜同心的球面中继像面上；次级目镜系统是关于球透镜中心球对称的小口径透镜组阵列，对中继像进行像差校正并成像到探测器阵列上。对比了物镜采用双层同心球和单个球透镜的成像性能，后者可获得更优的成像性能且避免了双胶合球透镜带来的公差控制及力学与热稳定性问题。整个成像系统的视场大于100°，全视场内角分辨率优于10″，而畸变小于5%；系统具有大景深特点，不需调焦即可同时对300 m到无穷远目标清晰成像，可广泛应用于侦查监控等领域。
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| 关 键 词： | 光学设计 仿生设计 广角 多尺度成像 |
| 收稿时间： | 2018-08-31 |
Biomimetic hybrid fisheye/compound eye imaging system with wide view and high resolution |
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| Affiliation: | College of Intelligence Science, National University of Defense and Technology, Changsha 410073, China |
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| Abstract: | Based on the multiscale imaging theory, a biomimetic hybrid fisheye/compound eye imaging system is utilized for wide view and high resolution sensing. The objective is a relatively large-aperture ball lens collecting the wide-angle target light and imaging it onto an intermediate image surface which is spherical and concentric with the ball lens. The intermediate images are then corrected for aberration and imaged onto the detector array by a small-diameter lens group array which work as the eyepiece and are spherically symmetric about the center of the ball lens. A comparison of imaging performance is presented between the system using concentric double ball lenses and the system using single ball lens as the objective, respectively. The latter has even better imaging performance and avoids the problems of tolerancing, mechanical and thermal instability of the cemented ball lenses. The designed full field of view is over 100° while the angular resolution is higher than 10″and the distortion is less than 5% in the full field. The system has a large depth of field. Targets from 300 m away to infinite can be simultaneously imaged without focus adjustment. It can be widely used in the field of surveillance. |
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