介电润湿液体透镜仿生复眼的设计与仿真

Design and simulation of bionic compound eye with electrowetting liquid lens

为解决仿生复眼系统不能自适应变焦的问题,提出了一种基于介电润湿液体透镜曲面阵列的可变焦仿生复眼系统。分析系统结构对成像性能的影响,计算系统的自适应变焦能力及相应像平面可移动范围。结果表明:系统成像的视场角随着基底曲率的增大而增大。相比于非均匀透镜阵列,均匀透镜阵列可明显降低系统的离焦像差。适当减小子透镜单元尺寸,也可以达到降低边缘透镜离焦像差的目的。当物距或者接收器位置发生改变时,通过调整子透镜单元焦距降低系统的离焦像差。系统接收器可移动范围为1.9 mm~15 mm。

To solve the problem that the bionic compound eye system can't zoom adaptively,a zoomable bionic compound eye system based on electrowetting-on-dielectric liquid lens cambered array is proposed.The influence of the system structure on the imaging performance is analyzed,and the adaptive zoom capability of the system and the moving range of the corresponding image plane are calculated.The results show that the field of view angle increases with the increase of the curvature of the base.Compared with the non-uniform lens array,the uniform lens array can significantly reduce the defocus aberration of the system.Reducing the size of the lens unit can also decrease the defocus aberration of the edge lens.When the object distance or receiver position is changed,the defocus aberration of the system will be reduced by adjusting the focal length of the lens unit.The movable range of the system receiver is 1.9 mm~15 mm.