Two-dimensional fast control reflector angle temperature drift measuring device

The invention discloses a two-dimensional fast control reflector angle temperature drift measuring device which comprises a collimated light emitting module, a polarization beam splitting system, a temperature control box, a light spot position sensor, a data acquisition and transmission module and a main control computer. The FSM to be tested is arranged in the temperature control box; laser emitted by the collimated light emitting module is divided into two parts by the polarization beam splitting system, namely an S component and a P component, the S component reaches the FSM after passing through an incidence window of the temperature control box and is reflected by the FSM, and the reflected light is emitted and then reaches the light spot position sensor through the polarization beam splitting system; the light spot position sensor converts an output signal and then uploads the converted signal to the main control computer through the data acquisition and transmission module, and the main control comput