High-precision optical instrument mirror surface with protective structure

The utility model discloses a high-precision optical instrument mirror surface with a protection structure, which is applied to the field of high-precision optical instrument mirror surfaces, and comprises a telescope and a mirror surface body arranged on the telescope, a protection box body is arranged below the telescope, first grooves are symmetrically arranged on the protection box body, and the first grooves are arranged in the first grooves. A containing through hole is formed in the protection box body, a fixing seat is fixedly arranged in the first groove, a telescopic rod is fixedly arranged on the fixing seat, a first clamping ring is rotatably connected to one end of the telescopic rod, limiting rings are symmetrically and fixedly arranged on the first clamping ring, a second clamping ring is arranged above the first clamping ring, and a clamping groove is formed in the second clamping ring. The second clamping ring is connected with the first clamping ring through a first screw, the second clampin