Rapid spectral imaging system based on liquid crystal and use method

The invention discloses a rapid spectral imaging system based on liquid crystal and a using method. The rapid spectral imaging system based on liquid crystal comprises a laser light source, a collimator, a polarizer, a liquid crystal box, a signal generator, a polarization analyzer, an object to be measured, an imaging lens group, a CCD detector and a PC. when the liquid crystal is depressurized, the relaxation optical path difference relational graph of the liquid crystal box is measured at the relaxation time when the liquid crystal returns to the initial state, and then the spectral and spatial images of the object to be measured are obtained through Fourier transform by measuring an intensity curve of interference light at different optical path differences. 一种基于液晶的快速光谱成像系统及使用方法，基于液晶的快速光谱成像系统，包括激光光源、准直器、起偏器、液晶盒、信号发生器、检偏器、待测物体、成像透镜组、CCD探测器和PC机，本发明利用液晶退压时，液晶返回初始状态的弛豫时间测量所述的液晶盒的弛豫光程差关系图，再通过测得不同光程差时干涉光的强度曲线，经傅里叶变换得到所述的待测物体的光谱和空间的图像。