摘要
在水的光学特性影响下,为了对水下目标进行实时探测,通过研究螳螂虾视觉偏振成像原理,仿照其独特的复眼结构,充分利用分振幅和基于孔径分割技术,设计了一种新型的水下实时偏振成像系统。采用四通道阵列结构和双通道阵列相结合,用圆偏振技术和线偏振技术对水下目标进行实时成像。通过Zemax软件实现该系统设计,系统焦距为35mm,F数为4,工作波长为可见光波段486nm^656nm,半视场角为±2.5°。设计结果表明:MTF>0.7(@60lp/mm),系统弥散斑<9μm,畸变小于0.5%,可满足成像要求。
Under the influence of the optical properties of water,in order to detect underwater targets in real time,by studying the principle of visual polarization imaging of mantis shrimp,mimicking its unique compound eye structure,and using the amplitude and aperture-based segme ntation techniques,a new underwater real-time polarization imaging system was designed.The combination of a four-channel array structure and a two-channel array enabled the real-time imaging of underwater targets using circular polarization and linear polarization techniques.The design of the system was realized by ZEMAX software,and the focal length is 35 mm,the F number is 4,the working wavelength is 436 nm^656 nm,and the half angle of view is±2.5°.The designed results indicates that MTF>0.7(@60 lp/mm),system dispersed spot<9μm,distortion is less than 0.5%,which can meet the target requirements.
作者
刘卿卿
居彩华
明梅
LIU Qingqing;JU Caihua;MING Mei(School of Automation,Nanjing University of Information Science & Technology,Nanjing 210044,China;Collaborative Innovation Center on Atmospheric Environment and Equipment Technology,Nanjing Universityof Information Science & Technology,Nanjing 210044,China)
出处
《应用光学》
CAS
CSCD
北大核心
2019年第5期717-722,共6页
Journal of Applied Optics
基金
国家自然科学基金(61701244)
关键词
水下成像
仿生视觉
偏振成像
光学设计
underwater imaging
bionic vision
polarization imaging
opticaldesign
