a fixed structure comprising at least two split outer ball seats, wherein the at least two outer ball seats are connected to jointly define a through hole, rotating fulcrums are provided on each of the outer ball seats, and there are at least four rotating fulcrums in total that are located in the through hole;

a first circuit board provided with a fixed portion, an elastic portion, and a connecting portion that are sequentially connected, the fixed portion being connected to the fixed structure;

a connecting structure comprising a plurality of balls, which are quantitatively consistent with the rotating fulcrums, and rotatably connected to the rotating fulcrums in one-to-one correspondence;

a movable structure inserted into the through hole, wherein a bottom of the movable structure is connected to the connecting portion, the movable structure comprises an inner ball seat and a lens on the inner ball seat, at least four spherical segments in one-to-one correspondence with the balls are arranged on an outer periphery of the inner ball seat, the spherical segments are concentric with a center of rotation, and the balls abut against the spherical segments; and

a driving structure capable of driving the movable structure to rotate around at least two rotational axes.