Abstract A hybrid biomimetic imaging system combining the advantages of a fish eye and a compound eye is proposed. It uses a single ball lens as objective lens followed by an array of microcameras, which makes it possible to achieve high resolution in a wide field of view (FOV). Unlike conventional monocentric designs, a single ball lens is enough for the purpose of intermediate imaging. Its geometric aberrations are rather big but still able to be corrected by the subsequent microcameras with ordinary spherical lenses. Optomechanical design of the imaging system is presented and the alignment tolerance is easily guaranteed by machining fitting elements on an integrative housing assembly. Imaging performance of the single ball lens-based system is experimentally verified to be comparable with that of conventional two-shell objective-based system. Moreover, its microcamera has larger FOV which facilitates the extension of FOV with overlap between sub-images. Finally, a row of 9microcameras and 3 × 3 array of microcameras are integrated to capture and then stitch sub-images for wide FOV imaging with high resolution.

中文翻译：

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基于单球透镜的混合仿生鱼眼/复眼成像系统

摘要 提出了一种结合鱼眼和复眼优点的混合仿生成像系统。它使用单球透镜作为物镜，然后是一系列微型相机，这使得在宽视场 (FOV) 中实现高分辨率成为可能。与传统的单中心设计不同，单个球透镜足以满足中间成像的目的。其几何像差较大，但仍可通过后续的普通球面镜头微相机进行校正。介绍了成像系统的光机械设计，并且通过在集成外壳组件上加工装配元件可以轻松保证对准公差。单球透镜系统的成像性能经过实验验证，可与传统的双壳物镜系统相媲美。此外，它的微型相机具有更大的视场，这有利于子图像之间重叠的视场扩展。最后，将一排 9 个微型摄像头和 3 × 3 个微型摄像头阵列集成在一起，以捕获并拼接子图像，以实现高分辨率的宽 FOV 成像。