Miniaturized Fourier spectrometer based on linear reciprocation lead screw

The invention provides a miniaturized Fourier spectrometer based on a linear reciprocation lead screw. The miniaturized Fourier spectrometer comprises a base, the reciprocation lead screw and a collimated light source, the reciprocation lead screw is installed on the base and provided with a movable mirror base, and the movable mirror base is provided with a first angular mirror and a second angular mirror which are arranged back to back; the front side and the rear side of the reciprocation lead screw are each provided with a linear guide rail, the front end and the rear end of the movable mirror base are both connected with the linear guide rails, the movable mirror base can slide on the linear guide rails, the left side and the right side of the reciprocation lead screw are each provided with a support table, a first fixed mirror and a second fixed mirror are installed on the two support tables respectively, a light splitting mirror is installed on the front portion of the base, and the included angle between the collimated light source and the light splitting mirror is 45 degrees. According to the miniaturized Fourier spectrometer based on the linear reciprocation lead screw, a double-angle-mirror differential interferometer is selected as a core part of the spectrometer, by means of movable mirror differential, the structural design of four times of optical path difference is achieved, the size of the whole system is simplified, the complexity of the system is reduced, and system miniaturization is achieved.