Optical axis temperature compensation device for laser guidance system

The invention relates to an optical axis temperature compensation device for a laser guidance system, belongs to the technical field of laser guidance, and solves the problems that a laser optical axis is imbalanced due to the influence of temperature and the accuracy is reduced. The device comprises a mirror frame for mounting plate glass, a U-shaped bracket, a swing rod, a base, a spring jacking assembly and a jacking rod assembly, the mirror frame is hinged with the U-shaped bracket through a first pin shaft; the other end of the U-shaped support is rotationally installed on the base and connected with the swing rod. The first spring jacking assembly and the first jacking rod assembly are used for positioning the mirror frame; the second spring jacking assembly and the second jacking rod assembly are arranged on the two sides of the swing rod correspondingly and used for positioning the swing rod. The length of the ejector rod assembly can be increased or decreased along with temperature changes, and then