Biological compound eyes have excellent optical properties,including large field of view,small size,no aberrations,and sensitivity to moving objects.Sensitivity to moving objects is crucial for flying insects that chase small,fast-moving targets.Inspired by the sensitivity of compound eyes possessed by insects to moving objects,we prepared a single-layer bionic compound eye with five ommatidia,each consisting of a Fresnel lens.Using femtosecond laser two-photon polymerization processing technology and soft lithography technology,a flexible bionic compound eye with high accuracy and repeatability was prepared.Experimental results show that the prepared bionic compound eye could obtain high-quality images and be used to track moving targets.
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