A blade driving device in which a central axis is defined includes a plurality of blades, two coil groups and a magnet. The blades are arranged around the central axis. The two coil groups are arranged around the central axis, include at least two coils with the central axis direction as a winding axis and are separated in the central axis direction. The magnet is arranged between the two coil groups in such a manner that a magnetized surface faces the two coil groups. The coils and the magnet generate an electromagnetic force along a circumferential direction of a circle centered on the central axis to drive the blades.

A blade driving device in which a central axis is defined includes a plurality of blades, two coil groups and a magnet. The blades are arranged around the central axis. The two coil groups are arranged around the central axis, include at least two coils with the central axis direction as a winding axis and are separated in the central axis direction. The magnet is arranged between the two coil groups in such a manner that a magnetized surface faces the two coil groups. The coils and the magnet generate an electromagnetic force along a circumferential direction of a circle centered on the central axis to drive the blades.

According to an embodiment, a blade driving device in which a central axis is defined includes a plurality of blades and a plurality of groups. The blades are arranged around the central axis. Each of the groups has a magnet and at least two coils and the groups are arranged at intervals along a circumference of a circle centered on the central axis. A winding axis direction of the coil coincides with a normal direction of a facing surface of the magnet facing the coil, magnetic poles formed on the facing surface are reversed at a position corresponding to a center of the coil when viewed from the winding axis direction, and each of the groups generates an electromagnetic force along a circumference direction of the circle to drive the blades.

According to an embodiment, a blade driving device in which a central axis is defined includes a plurality of blades and a plurality of groups. The blades are arranged around the central axis. Each of the groups has a magnet and at least two coils and the groups are arranged at intervals along a circumference of a circle centered on the central axis. A winding axis direction of the coil coincides with a normal direction of a facing surface of the magnet facing the coil, magnetic poles formed on the facing surface are reversed at a position corresponding to a center of the coil when viewed from the winding axis direction, and each of the groups generates an electromagnetic force along a circumference direction of the circle to drive the blades.

A camera module includes a camera motor, a lens, an image sensor assembly, and a variable aperture. The camera motor includes a focusing part, and the focusing part includes a base, a carrier, and a driver. The driver is fastened to the base and is configured to drive the carrier to move relative to the base in a specified direction. The carrier forms an installation hole in a specified direction. The lens is fastened in the installation hole, and an optical axis of the lens is parallel to the specified direction. The variable aperture is fastened on the carrier and located on a light incoming side of the lens. The image sensor assembly is disposed at one end of that is of the base and that is away from the variable aperture. Both of the variable aperture and the lens are disposed on the carrier of the focusing part.

A camera module includes a camera motor, a lens, an image sensor assembly, and a variable aperture. The camera motor includes a focusing part, and the focusing part includes a base, a carrier, and a driver. The driver is fastened to the base and is configured to drive the carrier to move relative to the base in a specified direction. The carrier forms an installation hole in a specified direction. The lens is fastened in the installation hole, and an optical axis of the lens is parallel to the specified direction. The variable aperture is fastened on the carrier and located on a light incoming side of the lens. The image sensor assembly is disposed at one end of that is of the base and that is away from the variable aperture. Both of the variable aperture and the lens are disposed on the carrier of the focusing part.

An aperture set comprises: a support including a first opening overlapping with a lens; a rotor rotatably disposed on the support and including a second opening overlapping with the lens and the first opening; and a plurality of blades disposed on the support and respectively rotatably disposed on the rotor, wherein an inner surface of the blade for adjusting an amount of light incident on the lens includes a curved portion and a straight portion.

An aperture set comprises: a support including a first opening overlapping with a lens; a rotor rotatably disposed on the support and including a second opening overlapping with the lens and the first opening; and a plurality of blades disposed on the support and respectively rotatably disposed on the rotor, wherein an inner surface of the blade for adjusting an amount of light incident on the lens includes a curved portion and a straight portion.

This application provides an aperture, a camera module, and an electronic device. The aperture includes a base, a carrier base, a driving part, a resilient sheet, and a plurality of blades. A first optical hole for light to pass through is formed on the base. Each blade is hinged on the base, and the plurality of blades are distributed around the first optical hole, so that a light entry hole coaxial with the first optical hole is formed among the plurality of blades. The carrier base is connected to the base by using the resilient sheet, and the carrier base is configured to drive each blade to rotate relative to the base to change a size of the light entry hole. The driving part is configured to drive the carrier base to rotate by using an axis line of the first optical hole as a rotation axis.

This application provides an aperture, a camera module, and an electronic device. The aperture includes a base, a carrier base, a driving part, a resilient sheet, and a plurality of blades. A first optical hole for light to pass through is formed on the base. Each blade is hinged on the base, and the plurality of blades are distributed around the first optical hole, so that a light entry hole coaxial with the first optical hole is formed among the plurality of blades. The carrier base is connected to the base by using the resilient sheet, and the carrier base is configured to drive each blade to rotate relative to the base to change a size of the light entry hole. The driving part is configured to drive the carrier base to rotate by using an axis line of the first optical hole as a rotation axis.