Tao Kekai, Lian Gaoge, Liu Yongshun, Xing Huaming, Xing Yi, Su Xiangdong, Feng Xin, Wu Yihui
State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics (CIOMP), Chinese Academy of Sciences, Changchun 130033, China.
University of Chinese Academy of Sciences, Beijing 100039, China.
Micromachines (Basel). 2021 Mar 21;12(3):331. doi: 10.3390/mi12030331.
Compared with a traditional optical system, the single-lens curved compound eye imaging system has superior optical performance, such as a large field of view (FOV), small size, and high portability. However, defocus and low resolution hinder the further development of single-lens curved compound eye imaging systems. In this study, the design of a nonuniform curved compound eye with multiple focal lengths was used to solve the defocus problem. A two-step gas-assisted process, which was combined with photolithography, soft photolithography, and ultraviolet curing, was proposed for fabricating the ommatidia with a large numerical aperture precisely. Ommatidia with high resolution were fabricated and arranged in five rings. Based on the imaging experimental results, it was demonstrated that the high-resolution and small-volume single-lens curved compound eye imaging system has significant advantages in large-field imaging and rapid recognition.
与传统光学系统相比，单透镜曲面复眼成像系统具有优异的光学性能，如大视场（FOV）、小尺寸和高便携性。然而，散焦和低分辨率阻碍了单透镜曲面复眼成像系统的进一步发展。在本研究中，采用具有多个焦距的非均匀曲面复眼设计来解决散焦问题。提出了一种两步气体辅助工艺，该工艺结合了光刻、软光刻和紫外线固化，用于精确制造具有大数值孔径的小眼。制造出了高分辨率的小眼并将其排列成五个环。基于成像实验结果，证明了高分辨率、小体积的单透镜曲面复眼成像系统在大视场成像和快速识别方面具有显著优势。
