Radial adjusting device of adjustable optical element

The invention relates to a radial adjusting device of an adjustable optical element. The radial adjusting device comprises an adjustable mirror set, at least a radial adjusting mechanism, a fixed mirror base, at least a motor assembly, an elastic plunger, and an axial support mechanism. The adjustable mirror set is arranged in the fixed mirror base by the axial support mechanism that are used for supporting the adjustable mirror set and ensuring that axial displacement of the adjustable mirror set is not changed. The elastic plunger is fixedly arranged in the fixed mirror base and one end of the elastic plunger is elastically connected with the adjustable mirror set. The radial adjusting mechanism is arranged in the fixed mirror base and is connected with the adjustable mirror set in a radial movement mode. The motor assembly, which is connected with the radial adjusting mechanism, drives the radial adjusting mechanism to move, thereby driving the adjustable mirror set to move. And the elastic plunger is used for maintaining the balance of the adjustable mirror set on a radial direction.