提出了一种新颖的方法来研究电控可调谐液晶法布里珀罗高光谱成像探测器，该设备将用于3~5μm波段范围内连续挑选特定波长，液晶指向失会受到加在设备电极两端的电压说产生的电场影响，基于这个理论，腔内的液晶折射率能够被电控。通过运用薄膜的矩阵传输公式，计算了感光面上的红外透过率，从而得到了透过率，外加点信号，以及挑选波长之间的关系。最重要的理论是设备将由两个法布里珀罗干涉仪紧密连接起来，分别受电控制，从而达到准确的在波段范围挑选单一波长的目的。“,”This paper proposed a novel meth od for investigating the characteristics of an electrically tunable liquid crystal(LC) Fabry-Perot(FP) hyperspectral imaging detectors. The device would be used to sequentially choose the specific wavelength in the range of 3 to 5. Based on the method proposed that the directing vector of liquid crystal materials would be changed in an electric field applied over the electrodes of the device, the refractive index of the FP cavity filled by LC film could be changed electrically. Through the thin film matrix equation, we calculated the transmissivity of the infrared light incident upon the photosensitive plane directly, and then obtained the relationship among the transmissivity, the applied voltage signal, and the wavelength value selected. The most key features of the proposal approach was that the device will be composed of main very thin electrically refractive-index parts, which are two FP interferometers connected closely so as to accurately perform the choice of each single wavelength desired in the spectral range by the device developed.