Design Of Bionic Compound Eye System Based On Hexagonal Closely Spliced Structure

Natural compound eyes have attracted much attention in recent years due to their large field of view,compact structure and high sensitivity to moving objects.Many research directions are devoted to imaging systems that simulate natural compound eyes.According to the structure of insect compound eyes and the specific needs of micro drone,carry out the structural design of artificial bionic compound eye optical system with high-performance dynamic imaging capabilities at the micro-scale.Based on 3D printing technology,it realizes the imaging function of special micro-environment and artificial compound eye preparation,explores the high-precision 3D printing technology and process of artificial compound eye from the perspective of micro-nano manufacturing.By studying the special optical effects of micro-scale optical devices,designing optical systems that meet special functions and special sizes,coordinate the overall preparation and integration of the micro-nano optical system,study the overall design and preparation plan of the optimal system.This article uses electron microscope to analyze the compound eye slices of common insects(bees,locusts,ladybirds),study the surface morphology,sub-eye structure and connection methods of compound eyes of different organisms.The biological compound eye structure is abstracted out of the corresponding optical model,a separate sub-eye lens is designed by calculating the relationship between its structural parameters,and the nonsequential mode of ZEMAX is used to complete the curved compound eye micro-lens array in the form of a circular array.In order to prevent the imaging crosstalk phenomenon between adjacent sub-eye lenses,the non-sequential mode is also used for the array of each stop.By designing the image conversion system,the curved image formed by the curved micro-lens array is converted into a flat image,which is convenient for the reception of the flat detector.Finally,the curved micro-lens array and the image conversion system are combined and optimized to meet the imaging requirements.To meet the manufacturing requirements of 3D additive technology under the microstructure,designed the overall structure of the compound eye system and performed tolerance analysis.After the design and optimization,the diameter of the compound eye is 8.66 mm,the field of view is 121°,including 1945 sub-eyes,each sub-eye lens has a diameter of 500?m,the sub-eye's field of view angle is 6°,and the stop length is 1.5mm.At 90lp/mm,the MTF value of the compound eye system is greater than 0.3,the RMS radius is within the radius of the Airy disk,the imaging quality of the system meets the design requirements.Tolerance analysis results show that it can meet the processing requirements of 3D additive technology.