Variable aperture module, imaging lens module and electronic device

The invention discloses a variable aperture module, an imaging lens module and an electronic device. The variable aperture module comprises a blade group and a driving part. The blade group comprises a plurality of blades, and the blades are arranged around an optical axis to form a light through hole and can rotate, so that the size of the light through hole can be adjusted. The driving part comprises a rotating piece, at least one magnet and at least one coil. The rotating part corresponds to the blade and is used for driving the blade to rotate, so that the size of the light through hole is variable. The magnets comprise four polarities, and the polarities of the magnets are oppositely distributed in the directions surrounding the optical axis and parallel to the optical axis. The coil is arranged corresponding to the magnet, and one of the magnet and the coil is arranged on the rotating piece. The magnet and the coil are arranged along the direction parallel to the optical axis. Therefore, the size of the