a shield can;

a driving mechanism, disposed in the shield can, wherein the driving mechanism is configured to drive a lens unit to move in a direction parallel to an optical axis of the lens unit;

a space maintaining element in physical contact with the shield can, wherein the space maintaining element is configured to space the driving mechanism apart from a central aperture of the shield can by a predetermined distance in the direction parallel to the optical axis, and the space maintaining element comprises:

a plastic frame portion; and

a metal structure portion, comprising a plurality of pins, wherein the metal structure portion is insert-molded with the plastic frame portion to form the space maintaining element; and

a damping element, connected to the plurality of pins and the lens unit;

wherein the plurality of pins are located closer to the optical axis than part of the metal structure portion without the plurality of pins.