Ultrahigh frame rate digital light projector using chip-scale LED-on-CMOS technology  

作　　者：NAVID BANI HASSAN FAHIMEH DEHKHODA ENYUAN XIE JOHANNES HERRNSDORF MICHAEL J.STRAIN ROBERT HENDERSON MARTIN D.DAWSON 

机构地区：[1]Institute of Photonics,Department of Physics,University of Strathclyde,Technology and Innovation Centre,Glasgow G11RD,UK [2]School of Engineering,Institute for Integrated Micro and Nano Systems,University of Edinburgh,Edinburgh EH93JL,UK

出　　处：《Photonics Research》2022年第10期2434-2446,共13页光子学研究（英文版）

基　　金：Engineering and Physical Sciences Research Council(EP/M01326X/1,EP/S001751/1,EP/T00097X/1);Royal Academy of Engineering(Research Chairs and Senior Research Fellowships).

摘　　要：Digital light projector systems are crucial components in applications,including computational imaging,fluorescence microscopy,and highly parallel data communications.Current technology based on digital micromirror displays are limited to absolute frame rates in the few tens of kiloframes per second and require the use of external light sources and coupling optics.Furthermore,to realize gray-scale pixel values using duty cycle control,frame rates are reduced proportionally to the number of gray levels required.Here we present a self-emissive chip-scale projector system based on micro-LED pixels directly bonded to a smart pixel CMOS drive chip.The 128×128 pixel array can project binary patterns at up to 0.5 Mfps and toggle between two stored frames at megahertz rates.The projector has a 5-bit gray-scale resolution that can be updated at up to 83 kfps,and can be held in memory as a constant bias for the binary pattern projection.Additionally,the projector can be operated in a pulsed mode,with individual pixels emitting pulses down to a few nanoseconds in duration.Again,this mode can be used in conjunction with the high-speed spatial pattern projection.As a demonstration of the data throughput achievable with this system,we present an optical camera communications application,exhibiting data rates of>5 Gb/s.

关 键 词：FRAME FRAMES light 

分 类 号：TN946.1[电子电信—信号与信息处理]