Auxiliary tool for optical instrument calibration

The utility model discloses an auxiliary tool for optical instrument calibration, and relates to the field of optical instrument calibration. An auxiliary tool for optical instrument calibration comprises a base, the bottom of an inner cavity of the base is fixedly connected with a stepping motor, the output end of the stepping motor is fixedly connected with a rotating shaft, the top of the rotating shaft penetrates through the top of the base and is fixedly connected with a connecting plate, and the top of the connecting plate is fixedly connected with a supporting plate. And the top of the supporting plate is fixedly connected with a frame body. According to the auxiliary tool for optical instrument calibration, firstly, an optical instrument main body is placed on an L-shaped frame, an electric cylinder drives a shell to move, the shell fixes the optical instrument main body through a fixing column and a baffle, meanwhile, the baffle is buffered on a movable plate through the fixing column, the movable pl