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
韩松 1雷婕妤 1王彤璐 1臧彦楠 1李青松 1高亦飞 1徐林2
作者信息
- 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
- 折叠
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.
Abstract
Large view field and high-resolution imaging is a key problem that needs to be addressed currently in do-mains 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 3840×480 and 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 ima-ging view field by 6 times.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Key words
liquid crystal electrical scanning/active imaging/wide view field/liquid crystal polarization grating/fer-roelectric liquid crystal引用本文复制引用
出版年
2024
NETL
NSTL
万方数据