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1、 1 Metasurface Optics for Full-color Computational Imaging Authors:Shane Colburn1,Alan Zhan2,Arka Majumdar1,2*Affiliations:1Department of Electrical Engineering,University of Washington,Seattle,Washington 98195,USA.2Department of Physics,University of Washington,Seattle,Washington 98195,USA.*Corresp

2、ondence to:arkauw.edu Abstract:Conventional imaging systems comprise large and expensive optical components which successively mitigate aberrations.Metasurface optics offers a route to miniaturize imaging systems by replacing bulky components with flat and compact implementations.The diffractive nat

3、ure of these devices,however,induces severe chromatic aberrations and current multi-wavelength and narrowband achromatic metasurfaces cannot support full visible spectum imaging(400-700 nm).We combine principles of both computational imaging and metasurface optics to build a system with a single met

4、alens of NA 0.45 which generates in-focus images under white light illumination.Our metalens exhibits a spectrally invariant point spread function which enables computational reconstruction of captured images with a single digital filter.This work connects computational imaging and metasurface optic

5、s and demonstrates the capabilities of combining these disciplines by simultaneously reducing aberrations and downsizing imaging systems with simpler optics.One Sentence Summary:We design metalenses to capture full visible spectrum color images with white-light by combining metasurface optics and co

6、mputational imaging.2 Main Text:Introduction Modern cameras consist of systems of cascaded and bulky glass optics for imaging with minimal aberrations.While these systems provide high quality images,the improved functionality comes at the cost of increased size and weight,limiting their use for a va