Compound Metalens Enabling Distortion-Free Imaging  

作　　者：Hanyu Zheng Fan Yang Hung-I Lin Mikhail Y.Shalaginov Zhaoyi Li Padraic Burns Tian Gu Juejun Hu 

机构地区：[1]Department of Materials Science and Engineering,Massachusetts Institute of Technology,Cambridge,MA 02139,USA [2]2Pi Inc.,Cambridge,MA 02139,USA [3]Materials Research Laboratory,Massachusetts Institute of Technology,Cambridge,MA 02139,USA

出　　处：《Engineering》2025年第2期52-58,共7页工程(英文)

基　　金：funding support provided by the Defense Advanced Research Projects Agency Defense Sciences Office Program: Enhanced Night Vision in Eyeglass Form (ENVision)

摘　　要：The emergence of metalenses has impacted a wide variety of applications such as beam steering,imaging,depth sensing,and display projection.Optical distortion,an important metric among many optical design specifications,has however rarely been discussed in the context of meta-optics.Here,we present a generic approach for on-demand distortion engineering using compound metalenses.We show that the extra degrees of freedom afforded by a doublet metasurface architecture allow custom-tailored angle-dependent image height relations and hence distortion control while minimizing other monochromatic aberrations.Using this platform,we experimentally demonstrate a compound fisheye metalens with diffraction-limited performance across a wide field of view of 140°and a low barrel distortion of less than 2%,compared with up to 22%distortion in a reference metalens without compensation.The design strategy and compound metalens architecture presented herein are expected to broadly impact metasurface applications in consumer electronics,automotive and robotic sensing,medical imaging,and machine vision systems.

关 键 词：Metasurface Metalens Wide field of view Wavefront correction Compound meta-optics 

分 类 号：O436[机械工程—光学工程] O439[理学—光学]