液晶电扫描主动成像视场扩展技术研究  

Research on active imaging field-of-view extension technology based on liquid crystal electrical scanning

作　　者：韩松 雷婕妤 王彤璐 臧彦楠 李青松 高亦飞 徐林 HAN Song;LEI Jieyu;WANG Tonglu;ZANG yannan;LI Qingsong;GAO Yifei;XU Lin(Hubei Huazhong Changjiang Optoelectronic Technology Co.LTD,Xiaogan 432100,China;School of Science,Jiangsu University of Science and Technology,Zhenjiang 212100,China)

机构地区：[1]湖北华中长江光电科技有限公司,湖北孝感432100 [2]江苏科技大学理学院,江苏镇江212100

出　　处：《光学技术》2024年第2期129-134,共6页Optical Technique

摘　　要：针对场景监视、视觉导航等领域亟需解决的大视场高分辨率成像问题,提出了一种液晶电扫描主动成像视场扩展技术,基于液晶电扫描原理设计了基于液晶偏振光栅和铁电液晶的液晶电扫描模块,并搭建了一套主动成像视场扩展系统。通过激光主动照明方式,采用在光源发射端和图像接收端引入液晶电扫描模块的方法,结合液晶偏振时序控制和拼接融合得到了大视场高分辨率的目标图像。实验结果表明,基于液晶电扫描的主动照明成像,实现了分辨率为3840×480、视场角为52°的大视场高分辨率成像,成像视场扩大了6倍。工作实现了非机械式的主动扫描成像,为大视场成像扩展技术提供了一种很好的方法。Large view field and high-resolution imaging is a key problem that needs to be addressed currently in domains of scene monitoring,visual navigation,etc.This work introduces a liquid crystal electric scanning module for light source and image receiver through active illumination.The liquid crystal electric scanning module was developed by liquid crystal polarization grating(LCPG)and ferroelectric liquid crystal(FLC)component.Further,an active imaging system was set up verifying the image field extension.The target image with large view field and high resolution is obtained through timing control and stitching fusion.Resolution of 3840×480and field-of-view of 52°was obtained.The results illustrate that the active illumination imaging based on liquid crystal electrical scanning can expand the resolution of imaging view field by 6times.non-mechanical scanning imaging is achieved by providing a candidate method for large view field extension.

关 键 词：液晶电扫描 主动成像 大视场 液晶偏振光栅 铁电液晶 

分 类 号：TN249[电子电信—物理电子学]