Research on active imaging field-of-view extension technology based on liquid crystal electrical scanning
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.
NETL
NSTL
万方数据
