Variable aperture module, imaging lens module and electronic device

A variable aperture module, comprising:

• a blade assembly, comprising:
• a plurality of movable blades, disposed around an optical axis to form a light passable hole with an adjustable size for different hole size states, wherein each of the plurality of movable blades has:
• a positioning hole;
• and
• a movement hole, adjacent to the positioning hole;
• a positioning element, comprising:
• a plurality of positioning structures, disposed respectively corresponding to the positioning holes of the plurality of movable blades so as to position the plurality of movable blades;
• a driving part, comprising:
• a rotation element, disposed corresponding to the movement holes of the plurality of movable blades and rotatable with respect to the positioning element so as to drive the plurality of movable blades to rotate with respect to the plurality of positioning structures of the positioning element for adjusting a size of the light passable hole;
• a base, wherein the rotation element is disposed on the base along a direction parallel to the optical axis;
• and
• at least two bearing members, disposed between the rotation element and the base along a direction parallel to the optical axis so as to support rotational motion of the rotation element;
• and
• a plurality of pressing structures, disposed respectively corresponding to the plurality of movable blades, wherein each of the plurality of pressing structures is at least disposed into at least one of the positioning hole and the movement hole of corresponding one among the plurality of movable blades, and each of the plurality of pressing structures at least presses against at least one of corresponding one among the plurality of positioning structures and the rotation element;
• wherein each of the at least two bearing members has at least three contact points in physical contact with the rotation element or the base.