Distance-measuring autofocus observation instrument

A distance-measuring autofocus observation instrument, comprising a distance-measuring circuit, a micro stepping motor, a control circuit, a photoelectric signal board, an eyepiece assembly, a prism assembly, and an objective lens assembly, characterized in that:

• The control circuit receives target distance information monitored by the distance-measuring circuit, converts the distance information into an objective lens displacement amount, and drives the micro stepping motor to adjust the objective lens assembly. Inside the main body of the observation instrument, the distance-measuring circuit and control circuit are installed, with the control circuit electrically connected to both the micro stepping motor and the distance-measuring circuit. The objective lens assembly is located inside the main body. The surface of the observation instrument body is provided with positioning slots. Inside the instrument body, a combined bracket is arranged, with a photoelectric signal board mounted at the upper part of the combined bracket, and a photoelectric sensor positioned above the photoelectric signal board. The combined bracket is equipped with a motor bracket, with a micro stepping motor fixed to one side of the motor bracket. The output shaft of the micro stepping motor is rotatably inserted into the motor bracket and fixed with a worm gear at one end. A movable block is slidably arranged inside the motor bracket and is provided with a stop plate. The inner side of the movable block features helical teeth, which engage with the worm gear via a worm-wheel connection. One side of the movable block is equipped with a connecting rod, with a transmission insert plate fixed at the other end of the connecting rod. The surface of the objective lens assembly includes positioning rings and is provided with a guide slot, into which a positioning insert plate is inserted. The positioning insert plate is confined within the positioning slot on the lens body.