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提出了一种球面复眼成像系统的结构设计方案。基于电场操控液滴透镜面形可实现变焦的技术,在球壳基底上制作非球面液滴透镜并用电场改变其焦距以满足不同视场角的成像要求,通过折转透镜将不同视场角的入射光聚焦在平面CCD的不同位置,从而在获得大视场的同时改善了边缘光线的成像质量。讨论了非球面液滴透镜的制备过程,设计了球面复眼透镜系统的结构,并利用ZEMAX软件进行光学建模,分析了单个通道的成像性质以及各个通道在成像平面上的位置关系。结果表明:该结构在±45°视场角内对边缘光线的成像质量有明显的改善作用,在大视场成像的同时保持了低像差,可以满足运动目标检测的应用要求。
Proposed a spherical compound eye imaging system structure design. The technique of zooming based on the control of droplet lens surface based on electric field can be used to make aspherical droplet lens on the spherical shell substrate and change its focal length with electric field to meet the imaging requirements of different field of view. By turning the lens, The incident light is focused on different positions of the planar CCD, thereby improving the imaging quality of the edge light while obtaining a large field of view. The preparation process of aspherical droplet lens was discussed. The structure of the spherical fly-eye lens system was designed. The optical modeling was carried out by using ZEMAX software. The imaging properties of single channel and the position of each channel in the imaging plane were analyzed. The results show that the proposed method can significantly improve the imaging quality of the edge light at ± 45 ° angle of view and maintain the low aberration at large field of view, which can meet the application requirements of moving target detection.