Light beam angle adjusting lens

A light beam angle adjusting lens provided by the utility model comprises a rear protective shell and an angle adjusting lens, the upper end face of the rear protective shell is provided with an interface, one side of the rear protective shell is provided with a front protective shell, one side of the rear protective shell far away from the front protective shell is provided with a threaded mounting hole, and the threaded mounting hole is arranged at the middle position. Plane mirrors are symmetrically arranged on the two sides of the angle adjusting lens, plane mirror fixing blocks are arranged on the sides, close to the angle adjusting lens, of the joints of the plane mirrors and the inner mounting shell, spring rods are arranged on the two sides of the fixing blocks, and angle adjusting lens fixing blocks are arranged on the lower end faces of the spring rods. A lead screw is arranged on the side, close to the inner mounting shell, of the connecting block. The utility model has the advantages that the earn