Light path collimation assembly of interferometer

The utility model relates to the technical field of interferometers, in particular to an optical path collimation assembly of an interferometer, which comprises an interferometer base and an observation mirror assembly. A screw rod is rotatably mounted in each strip-shaped groove, the two screw rods are coaxially fixed, sliding blocks are mounted on the screw rods in a threaded manner, clamping blocks are mounted on the top surfaces of the sliding blocks, and an observation mirror is clamped between the two clamping blocks; according to the observation mirror assembly, two lead screws synchronously rotate by rotating an adjusting screw, so that two sliding blocks can drive two clamping blocks to synchronously move, an observation mirror can be clamped between the two clamping blocks under the action of the clamping blocks, the observation mirror is fixed under the limiting action of the clamping blocks on the two sides, and the observation mirror can be clamped between the two clamping blocks; the observation