Adjustable aperture module, imaging lens module, camera module and electronic device

An imaging lens module comprising:

• an imaging lens comprising an object-side lens group and an image-side lens group, and an optical axis of the imaging lens passing through the object-side lens group and the image-side lens group;
• an adjustable aperture module disposed between the object-side lens group and the image-side lens group, and the adjustable aperture module comprising:
• a blade assembly comprising at least two light-blocking blades overlapping one another, the at least two light-blocking blades arranged in a circumferential direction surrounding the optical axis and together forming a light pass aperture, and the optical axis passing through the light pass aperture;
• a plurality of fixed shafts disposed corresponding to the blade assembly;
• a movable component disposed corresponding to the blade assembly;
• and
• a driving mechanism configured to rotate the movable component in the circumferential direction, allowing the blade assembly to move relative to the plurality of fixed shafts for varying an aperture size of the light pass aperture;
• a first spacer, wherein the plurality of fixed shafts are disposed on the first spacer;
• and
• a second spacer disposed corresponding to the first spacer;
• wherein the first spacer and the second spacer are coupled to each other and together form an inner space in which the adjustable aperture module is accommodated;
• and
• wherein the second spacer receives the object-side lens group and is in physical contact with the object-side lens group.