Aperture module, camera module, and electronic device

A camera module, comprising an aperture module,

• wherein the aperture module comprises a base, a blade group, a gear carrier, and a driving member, wherein a light passing hole is formed in the base;
• the blade group is disposed on the base, the blade group comprises a plurality of blades, the plurality of blades are distributed around the light passing hole, and a light entering hole opposite to the light passing hole is formed among the plurality of blades;
• for each blade, a gear is disposed on the blade, and the blade is capable of rotating around the gear in a direction towards or away from a center of the light entering hole;
• the gear carrier is movably disposed on the base, the gear carrier is provided with a plurality of racks, and the gear carrier is meshed with the gears through the racks;
• wherein the plurality of racks are disposed in parallel, and rack grooves corresponding to the plurality of racks face the same direction;
• the driving member is connected to the gear carrier, and the driving member is capable of driving the gear carrier to move relative to the base;
• and
• in a process in which the gear carrier moves relative to the base, the gear carrier drives the blades in the blade group to rotate relative to the base in the direction towards or away from the center of the light entering hole, so as to adjust a size of the light entering hole.