An actuator includes a first magnet whose magnetic pole surface has an N pole and a second magnet whose magnetic pole surface has an S pole. When current flows from one end of a first wiring to the other end, the current circulates in one direction at least partially on the first magnet in a first area, while it circulates in a direction opposite to the one direction at least partially on the second magnet in the first area. When current flows from one end of a second wiring to the other end, the current circulates in the direction opposite to the one direction at least partially on another first magnet in the second area, while it circulates in the one direction at least partially on another second magnet in the second area.

A lens prism module relates to the field of shooting equipment and includes a fixed base, a rotating base, a prism, and a driving assembly. The rotating base includes rotating shafts connected with the fixed base. The rotating base is recessed to form rotating grooves. A bottom portion of each rotating groove includes supporting surface structures disposed obliquely with respect to an axis of the rotating shafts. One end of each rotating shaft is of a curved surface structure. Each curved surface structure is tangent to a corresponding supporting surface structure for realizing rotation of the rotating base, which reduce resistance of rotation, reduces a driving force for driving rotation of the rotating base, so that the lens prism module responds quickly when performing an optical image stabilization function. Meanwhile, it limits shaking of the rotating shafts and the rotating shafts are stably rotatably connected with the rotating base.

A photographing apparatus and an electronic device are provided. The photographing apparatus includes a frame assembly, a first movement assembly, first support members, a second movement assembly, second support members, and a lens module. The frame assembly is provided with a receiving cavity. The first movement assembly is suspended in the receiving cavity, and a movement cavity is provided inside the first movement assembly. The first support members are each arranged at least partially in a respective first movement groove and abut against the first movement assembly and the frame assembly. The first movement grooves adapted to the first movement assembly and the second movement grooves adapted to the second movement assembly are provided such that the photographing apparatus is of a compact structure on condition that the lens module can rotate about the first axis of rotation and/or the second axis of rotation.

An optical element driving mechanism is provided, including a movable part, a fixed part, and a driving assembly. The movable part is for connecting the optical element. The movable part is movable relative to the fixed part. The driving assembly is used for generating a driving force to drive the movable part to move relative to the fixed part. The driving assembly further includes a first reinforcement element, for strengthening the driving force.

There is a solenoid including a stator having a first stator tooth and a second stator tooth, and an armature having a first armature tooth and a second armature tooth. The armature is moveable with respect to the stator over a predetermined stroke. A coil is associated with one of the stator and the armature for conducting an electric current and generating magnetic flux that is guided by the stator and the armature. The stator or the armature acts as a ferromagnetic core for the coil. There is a first air-gap between the first stator tooth and the first armature tooth that has a first length, and a second air-gap between the second stator tooth and the second armature tooth that has a second length. The first and second lengths are constant to within a predetermined margin over the predetermined stroke when the first and second armature teeth overlap the first and second stator teeth respectively.

An optical element driving mechanism is provided and includes a first movable part, a fixed assembly and a first driving assembly. The first movable part is configured to connect a first optical element. The fixed assembly has a first opening for a light beam to pass through, and the first movable part is movable relative to the fixed assembly. The first driving assembly is configured to drive the first movable part to move relative to the fixed assembly. When the first movable part is located in a first position relative to the fixed assembly, the first optical element overlaps the first opening.

An electronic device may include an electronic circuit, a heat sink thermally coupled to the electronic circuit, and spaced apart cooling fins extending from the heat sink. Each cooling fin includes a circuit board and a cooling device mounted thereon. The cooling device may have a conductive trace layer on the circuit board defining an electromagnet, a mounting member extending upwardly from the circuit board, a fan blade coupled to an upper end of the mounting member to be movable in a rocking motion about an axis defined by the mounting member, and a permanent magnet carried by the fan blade and responsive to the electromagnet.

An electromagnetic device includes a spool including a cylindrical body portion in which a through hole extending to a first direction is provided, a coil wound around the body portion, an iron core disposed in a through hole of the body portion, a yoke including a first member and a second member, the first member being connected to the iron core and the second member extending from the first member along an outer peripheral surface of the coil, and a movable iron piece, which has a plate shape, including a bent portion in a middle thereof. The yoke includes at least one positioning projection provided in a middle of the free end in the second direction. The movable iron piece includes a positioning recessed portion that accommodates and positions the positioning projection, the positioning recessed portion being provided in a middle between the pair of rotation supporting points.

A plate armature damping device for a tilting armature valve includes at least one damping body which can be fixed to a plate armature, with at least one damping material which, on an impact movement of the plate armature in the direction of a counter-element, is elastically deformable on impact on the counter-element. The at least one damping body has a geometric contour including at least one bulge on a surface of the at least one damping body facing the counter-element, which is configured such that, on the impact movement of the plate armature, the volume of the at least one damping body contributing to the damping increases.

An actuator has a first stator with four first poles, a second stator with four second poles aligned with the four first poles, at least one permanent magnet between the first stator and the second stator, four armatures positioned at terminal ends of the aligned four first poles and four second poles and coils wrapped around the first stator and the second stator. A controller selectively applies current to the coils to cause flux created by the at least one permanent magnet to traverse through selective poles of the first stator and the second stator to selectively alter air gap sizes associated with the four armatures.