A light pass aperture module, in order along a central axis, includes a blade assembly and a cap. The blade assembly includes a plurality of blades. The blades form a light pass aperture, and the light pass aperture is variable in size with the central axis as a center. The cap covers the blade assembly. The cap has a through hole, and the through hole is disposed corresponding to the light pass aperture. The cap includes a surface level down structure. The surface level down structure is disposed corresponding to one of the blades, and the surface level down structure is closer to the one blade than the through hole.

An aperture module includes: a base; a rotating plate rotatably disposed on the base; and blades configured to form an incident hole and move by rotation of the rotating plate to change a size of the incident hole. The blades are disposed in an opening disposed inside the rotating plate.

An optical element driving mechanism includes an optical element, a fixed assembly, a movable assembly, and a driving assembly. The optical element has an optical axis. The movable assembly is movably with respect to the fixed assembly and configured to hold the optical element. The driving assembly is configured to drive the movable assembly to move relative to the fixed assembly. When viewed along the optical axis, the optical element driving mechanism with a rectangular structure has a long side and a short side, and a length of the long side is not equal to a length of the short side.

An optical element driving mechanism includes an optical element, a fixed assembly, a movable assembly, and a driving assembly. The optical element has an optical axis. The movable assembly is movably with respect to the fixed assembly and configured to hold the optical element. The driving assembly is configured to drive the movable assembly to move relative to the fixed assembly. When viewed along the optical axis, the optical element driving mechanism with a rectangular structure has a long side and a short side, and a length of the long side is not equal to a length of the short side.

An aperture module includes a rotary plate disposed on a base, an aperture driving unit driving the rotary plate to rotate, and a plurality of blades interlocked with rotation of the rotary plate, and forming an entrance hole having various sizes by combinations thereof, wherein the plurality of blades each have a portion forming the entrance hole in a stepped form.

An aperture module includes a rotary plate disposed on a base, an aperture driving unit driving the rotary plate to rotate, and a plurality of blades interlocked with rotation of the rotary plate, and forming an entrance hole having various sizes by combinations thereof, wherein the plurality of blades each have a portion forming the entrance hole in a stepped form.

An optical system is provided. The optical system includes a movable portion used for connecting to an optical element having an optical axis, a fixed portion, and a second driving assembly used for driving the movable portion to move relative to the fixed portion. The movable portion includes a bottom having a window corresponding to the optical axis, a first blade corresponding to the window, and is movable relative to the bottom, a connecting element movable relative to the bottom and is used for bringing the first blade to move, and a first driving assembly used for driving the connecting element to move relative to the bottom. The movable portion is movable relative to the fixed portion. The fixed portion has a polygonal structure when viewed along the optical axis.

An optical system is provided. The optical system includes a movable portion used for connecting to an optical element having an optical axis, a fixed portion, and a second driving assembly used for driving the movable portion to move relative to the fixed portion. The movable portion includes a bottom having a window corresponding to the optical axis, a first blade corresponding to the window, and is movable relative to the bottom, a connecting element movable relative to the bottom and is used for bringing the first blade to move, and a first driving assembly used for driving the connecting element to move relative to the bottom. The movable portion is movable relative to the fixed portion. The fixed portion has a polygonal structure when viewed along the optical axis.

A stop module and a camera module including disclosed stop module. A stop module includes a base; blades sequentially overlapping each other on the base to rotate about separate rotation shafts to form incident holes having different sizes; and a driving portion including a magnet portion. One of the blades is a driving blade, which is directly interlocked with the magnet portion, and the blades other than the driving blade are driven to be directly or indirectly interlocked with the driving blade.

A stop module and a camera module including disclosed stop module. A stop module includes a base; blades sequentially overlapping each other on the base to rotate about separate rotation shafts to form incident holes having different sizes; and a driving portion including a magnet portion. One of the blades is a driving blade, which is directly interlocked with the magnet portion, and the blades other than the driving blade are driven to be directly or indirectly interlocked with the driving blade.