典型文献
Fast extended depth of focus meta-optics for varifocal functionality
文献摘要：
Extended depth of focus(EDOF)optics can enable lower complexity optical imaging systems when compared to active focusing solutions.With existing EDOF optics,however,it is difficult to achieve high resolution and high collection efficiency simultaneously.The subwavelength spacing of scatterers in a meta-optic enables the engineer-ing of very steep phase gradients;thus,meta-optics can achieve both a large physical aperture and a high numeri-cal aperture.Here,we demonstrate a fast(f/1.75)EDOF meta-optic operating at visible wavelengths,with an aperture of 2 mm and focal range from 3.5 mm to 14.5 mm(286 diopters to 69 diopters),which is a 250x elongation of the depth of focus relative to a standard lens.Depth-independent performance is shown by imaging at a range of finite conjugates,with a minimum spatial resolution of～9.84 pm(50.8 cycles/mm).We also dem-onstrate operation of a directly integrated EDOF meta-optic camera module to evaluate imaging at multiple object distances,a functionality which would otherwise require a varifocal lens.
文献关键词：
中图分类号：
作者姓名：
JAMES E.M.WHITEHEAD;ALAN ZHAN;SHANE COLBURN;LUOCHENG HUANG;ARKA MAJUMDAR
作者机构：
Department of Electrical and Computer Engineering,University of Washington,Seattle,Washington,D.C.98195,USA;Tunoptix,Seattle,Washington,D.C.98195,USA;Department of Physics,University of Washington,Seattle,Washington,D.C.98195,USA
文献出处：
引用格式：
[1]JAMES E.M.WHITEHEAD;ALAN ZHAN;SHANE COLBURN;LUOCHENG HUANG;ARKA MAJUMDAR-.Fast extended depth of focus meta-optics for varifocal functionality)[J].光子学研究（英文）,2022(03):828-833
A类：
varifocal,diopters,250x
B类：
Fast,extended,depth,meta,optics,functionality,Extended,EDOF,can,lower,complexity,optical,imaging,systems,when,compared,active,focusing,solutions,With,existing,however,difficult,achieve,high,resolution,collection,efficiency,simultaneously,subwavelength,spacing,scatterers,enables,engineer,very,steep,phase,gradients,thus,both,large,physical,aperture,numeri,Here,demonstrate,fast,operating,visible,wavelengths,range,from,which,elongation,relative,standard,lens,Depth,independent,performance,shown,by,finite,conjugates,minimum,spatial,pm,cycles,We,also,operation,directly,integrated,camera,module,evaluate,multiple,object,distances,would,otherwise,require
AB值：
0.539451
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