Closed-loop control device of optometry unit

The invention discloses a closed-loop control device of an optometry unit. The device comprises a base; a rectangular frame is fixedly connected to the upper end face of the base; a bottom plate is arranged above the rectangular frame; a movable seat is fixedly connected to the upper end face of the bottom plate; a vertical plate is arranged on the right end face of the movable seat; a connectingblock is arranged at the upper end of the vertical plate; the connecting block is fixedly connected with a rotating plate; the bottom end face of the rotating plate is connected with an optometry assembly; the right side wall of the base is fixedly connected with a transverse frame; the upper end of the transverse frame is connected with a vertical frame; and a head supporting plate is arranged above the vertical frame. The device is simple in structure and is clear and easy to understand in construction; rotation, lifting and horizontal movement of the optometry assembly can be achieved through a motor, so that the adjustment is convenient; transverse and vertical movement of the head supporting plate can be achieved through the motor, so that the control and adjustment are convenient; and the device is easy to operate, convenient to adjust, high in accuracy, high in automation degree, simple in principle, good in adjustment and control effect, strong in functionality and worthy of popularization.