Actuator module, lens module, and electronic device

Abstract

An actuator module, a lens module, and an electronic device, aiming at solving the problem that an electronic device generally shakes during image capturing, thereby resulting in poor quality of a captured image. In the actuator module, a support member comprises a ball and a rolling element, wherein the ball is rotatably arranged in a limiting groove; the arc center of an arcuate groove is located on a first axis, so that the support member allows a movable part to rotate about the first axis; a line connecting the limiting groove and the arcuate groove is collinear with a second axis, so that the support member allows the movable part to rotate about the second axis; and an actuating part can drive the movable part to rotate about the first axis and / or the second axis, so that the movable part can generate a displacement in a direction opposite to the shaking direction of the electronic device, thereby maintaining an optical element at a stable position in space, eliminating or reducing the influence of the shaking of the electronic device on the image quality, improving the imaging quality, and improving the quality of images captured by the lens module.

Description

Actuation modules, lens modules and electronic devices

[0001] This application claims priority to Chinese patent application No. 202510474008.X, filed with the State Intellectual Property Office of China on April 15, 2025, entitled "Shake Stabilization Module, Lens Module and Electronic Device", and claims partial priority to Chinese patent application No. 202510743344.X, filed with the State Intellectual Property Office of China on June 4, 2025, entitled "Actuation Module, Lens Module and Electronic Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of terminal device technology, specifically to an actuator module, a lens module, and an electronic device. Background Technology

[0003] Electronic devices (such as mobile phones and tablets) typically include a lens module for taking photos and videos. The lens module comprises a prism and a lens assembly positioned along the optical axis. The lens assembly may include several convex lenses and / or several concave lenses. Light from the outside world passes through the prism and lens assembly sequentially and is then imaged onto a sensor to acquire an image. However, during the shooting process, electronic devices generally experience shaking, resulting in poor image quality. Summary of the Invention

[0004] This application provides an actuator module, a lens module, and an electronic device to eliminate or reduce the impact of electronic device shake on image quality and improve image quality.

[0005] In a first aspect, embodiments of this application provide an actuation module, including: a fixed part, a movable part, a support member, and an actuating part; the movable part is disposed on the fixed part; the support member includes a ball and a rolling element, at least one of the fixed part and the movable part is provided with a limiting groove, and the ball is rotatably disposed in the limiting groove; at least one of the fixed part and the movable part is provided with an arc-shaped groove, the center of the arc of the arc-shaped groove is located on a first axis, the line connecting the limiting groove and the arc-shaped groove is collinear with a second axis, and the first axis and the second axis are perpendicular; the actuating part is connected to both the fixed part and the movable part, and the actuating part is used to drive the movable part to rotate around the first axis and / or the second axis.

[0006] With the above configuration, the support member includes a sphere and a rolling element. At least one of the fixed part and the movable part is provided with a limiting groove, and the sphere is rotatably disposed in the limiting groove. At least one of the fixed part and the movable part is also provided with an arc-shaped groove, the center of which is located on the first axis, allowing the support member to rotate around the first axis. The line connecting the limiting groove and the arc-shaped groove is collinear with the second axis, allowing the movable part of the support member to rotate around the second axis. The actuating part is connected to both the fixed part and the movable part, and can drive the movable part to rotate around the first axis and / or the second axis, so that the movable part can generate a displacement opposite to the direction of electronic device jitter, thereby maintaining the stable position of the optical element in space, eliminating or reducing the impact of electronic device jitter on image quality, improving imaging quality, and thus improving the image quality acquired by the lens module.

[0007] In some embodiments that may include the above-described embodiments, the limiting groove includes a first limiting groove disposed on the fixed part and a second limiting groove disposed on the movable part, and the sphere is disposed within the receiving space formed by the first limiting groove and the second limiting groove. By providing limiting grooves on both the movable part and the fixed part, the sphere can rotate relative to the fixed part and the movable part, thereby increasing the degree of freedom of movement of the sphere.

[0008] In some embodiments that may include the above-described embodiments, the support member includes a sphere, a limiting groove is provided on the fixed part, the sphere can be connected to the movable part (e.g., screwed or snap-fitted), and the sphere is rotatably disposed within the limiting groove so that the movable part is suspended on the fixed part by the sphere. The center of the sphere may be located at the intersection of the first axis and the second axis to allow the movable part to rotate relative to the fixed part about the first and second axes.

[0009] In some embodiments that may include the above-described embodiments, the support member includes a sphere, a limiting groove is provided on the movable part, the sphere can be connected to the fixed part (e.g., screwed or snap-fit), and the sphere is rotatably disposed in the limiting groove so that the movable part is suspended on the fixed part by the sphere. The center of the sphere may be located at the intersection of the first axis and the second axis to allow the movable part to rotate relative to the fixed part about the first axis and the second axis.

[0010] In some embodiments that may include the above-described embodiments, the sphere contacts the three first contact surfaces of the first limiting groove. For example, the first limiting groove is formed as a triangular pyramidal groove, meaning the first limiting groove is in the shape of a triangular pyramid, and the three first contact surfaces are the three sidewalls of the triangular pyramid. The sphere is tangential to and in contact with the three first contact surfaces. And / or, the sphere also contacts the three second contact surfaces of the second limiting groove. For example, the second limiting groove is formed as a triangular pyramidal groove, meaning the second limiting groove is in the shape of a triangular pyramid, and the three second contact surfaces are the three sidewalls of the triangular pyramid. The sphere is tangential to and in contact with the three second contact surfaces. This arrangement reduces the contact area between the sphere and the first and second limiting grooves, thereby ensuring the stability of the sphere's rotation.

[0011] In some embodiments that may include the above-described embodiments, the rolling element includes a ball, and the movable part is provided with a mounting groove, the line connecting the mounting groove and the limiting groove being collinear with the second axis; an arc-shaped groove is provided on the fixed part, and the ball is disposed within the receiving space formed by the mounting groove and the arc-shaped groove. With this configuration, the position of the ball can be restricted by the mounting groove so that the center of the ball is located on the second axis, allowing the movable part to rotate around the second axis.

[0012] In some embodiments that may include the above-described examples, the mounting groove has two third contact surfaces arranged at an angle, both of which contact the ball. For example, the mounting groove may be triangular prism-shaped, with the centerline of the prism parallel to the second axis, and the two third contact surfaces being the two faces of the prism. The ball is tangential to and in contact with both third contact surfaces. This arrangement reduces the contact area between the ball and the mounting groove, thereby ensuring the stability of the ball's rotation.

[0013] In some embodiments that may include the above-described embodiments, there are multiple balls (e.g., 2, 3, 4, etc.), and the multiple balls are arranged along the second axis. This arrangement allows multiple balls to simultaneously support the moving part, improving the stability of the moving part.

[0014] In some embodiments that may include the above-described examples, the two third contact surfaces extend in a direction parallel to the second axis, and the minimum dimension of the mounting groove in the direction of the second axis is greater than the sum of the outer diameters of all the balls within the mounting groove. This configuration ensures that the width of the mounting groove along the second axis is greater than the sum of the dimensions of all the balls along the second axis, allowing the balls to move within the mounting groove along the second axis, thereby avoiding interference caused by collisions between adjacent balls.

[0015] In some embodiments that may include the above embodiments, a first connecting plate is provided on the fixed part, a first limiting groove is provided on the first connecting plate, a second connecting plate is provided on the movable part, a second limiting groove is provided on the second connecting plate, and the first connecting plate faces the second connecting plate.

[0016] Through the above arrangement, the first limiting groove can be disposed on the first connection plate first, and then the fixing portion is manufactured or the first connection plate is mounted on the fixing portion. Compared with directly manufacturing the first limiting groove on the fixing portion, the difficulty of manufacturing the fixing portion can be reduced. Similarly, the second limiting groove can be disposed on the second connection plate first, and then the movable portion is manufactured or the second connection plate is mounted on the movable portion. Compared with directly manufacturing the second limiting groove on the movable portion, the difficulty of manufacturing the movable portion can be reduced.

[0017] Exemplarily, the first connection plate may be formed as an integral structure with the fixing portion in the form of a metal insert, that is, when the fixing portion is manufactured, the first connection plate is placed in an injection mold to perform injection molding of the fixing portion, so as to realize the fixation of the first connection plate and the fixing portion while forming the fixing portion. Similarly, the second connection plate is formed as an integral structure with the movable portion in the form of a metal insert, that is, when the movable portion is manufactured, the second connection plate is placed in an injection mold to perform injection molding of the movable portion, so as to realize the fixation of the second connection plate and the movable portion while forming the movable portion.

[0018] In some embodiments that may include the above embodiments, the distance L between the surface provided with the first limiting groove and the surface provided with the second limiting groove satisfies: 0mm<L≤10mm (for example, 2mm<L≤10mm). Such arrangement makes there a sufficient distance between the surface provided with the first limiting groove in the fixing portion and the surface provided with the second limiting groove in the movable portion, so as to avoid interference between the two surfaces that affects the rotation angle of the movable portion, and ensure the optical image stabilization effect.

[0019] In some embodiments that may include the above embodiments, the actuation module further includes a magnetic attraction assembly, the magnetic attraction assembly is connected to the fixing portion and the movable portion respectively, and the magnetic attraction assembly is configured to generate a magnetic force that causes the first limiting groove and the second limiting groove to approach each other. With such arrangement, the magnetic force generated by the magnetic attraction assembly can keep the groove walls of the first limiting groove and the second limiting groove in contact with the sphere, so as to prevent the sphere from falling out of the first limiting groove and the second limiting groove.

[0020] In some examples, the magnetic attraction assembly may include a first magnet and a second magnet, the first magnet may be disposed on the fixing portion, the second magnet may be disposed on the movable portion, and the first magnet and the second magnet attract each other to generate a magnetic force that causes the first limiting groove and the second limiting groove to approach each other. In the implementation manner where the first connection plate is disposed on the fixing portion and the second connection plate is disposed on the movable portion, the first magnet may be disposed on the first connection plate, and the second magnet may be disposed on the second connection plate, so as to reduce the distance between the first magnet and the second magnet, thereby increasing the magnetic force, and further preventing the sphere from falling out of the first limiting groove and the second limiting groove.

[0021] In some examples, the magnetic attraction assembly includes a magnet and a first ferromagnet. The first ferromagnet can be made of ferromagnetic materials such as iron, cobalt, and nickel, which are attracted by the magnet. The magnet can be disposed on the fixed part, and the first ferromagnet can be disposed on the movable part. The magnet attracts the first ferromagnet to generate a magnetic force that brings the first and second limiting grooves closer together. In an implementation where the first connecting plate is disposed on the fixed part and the second connecting plate is disposed on the movable part, the magnet can be disposed on the first connecting plate, and the first ferromagnet can be disposed on the second connecting plate to reduce the distance between the magnet and the first ferromagnet, thereby increasing the magnetic force and further preventing the ball from falling out of the first and second limiting grooves. When the material of the second connecting plate is a ferromagnetic material, the second connecting plate can serve as the first ferromagnet to simplify the structure of the magnetic attraction assembly.

[0022] In some examples, the magnetic attraction assembly includes a magnet and a first ferromagnet. The first ferromagnet can be made of materials such as iron, cobalt, or nickel that are attracted by a magnet. The magnet can be disposed on the movable part, and the first ferromagnet can be disposed on the fixed part. The magnet attracts the first ferromagnet to generate a magnetic force that brings the first and second limiting grooves closer together. In an implementation where the first connecting plate is disposed on the fixed part and the second connecting plate is disposed on the movable part, the magnet can be disposed on the second connecting plate, and the first ferromagnet can be disposed on the first connecting plate to reduce the distance between the magnet and the first ferromagnet, thereby increasing the magnetic force and further preventing the ball from falling out of the first and second limiting grooves. When the material of the first connecting plate is a ferromagnetic material, the first connecting plate can serve as the first ferromagnet to simplify the structure of the magnetic attraction assembly.

[0023] In some embodiments that may include the above-described embodiments, the actuating part includes a first actuating part and a second actuating part. The first actuating part is connected to both the fixed part and the movable part, and is used to drive the movable part to rotate around a first axis. The second actuating part is connected to both the fixed part and the movable part, and is used to drive the movable part to rotate around a second axis. With this configuration, the two rotational directions of the movable part are driven by the first actuating part and the second actuating part respectively, which facilitates precise control of each rotational direction.

[0024] In some embodiments that may include the above-described embodiments, the first actuation unit includes a first coil and a first magnet. The first magnet is disposed on one of the movable part and the fixed part, and the first coil is disposed on the other of the movable part and the fixed part. For example, the first magnet may be disposed on the movable part, and the first coil on the fixed part, thus preventing the power supply line for the first coil from affecting the rotation of the movable part. The second actuation unit includes a second coil and a second magnet. The second magnet is disposed on one of the movable part and the fixed part, and the second coil on the other of the movable part and the fixed part. The second magnet may be disposed on the movable part, and the second coil on the fixed part, thus preventing the power supply line for the second coil from affecting the rotation of the movable part.

[0025] In some embodiments, there may be two first actuating units. Correspondingly, the fixed cavity also has a second cavity wall disposed opposite to the first cavity wall. The first coil of one first actuating unit is disposed on the first cavity wall, and the first coil of the other first actuating unit is disposed on the second cavity wall. One first magnet is disposed on the end of the movable part facing the first cavity wall, and the other first magnet is disposed on the end of the movable part facing the second cavity wall. During operation, the two first coils are energized simultaneously, which allows the two first magnets to be subjected to force simultaneously, thereby driving the movable part to rotate around the first axis, increasing the driving force and improving the sensitivity. In addition, the two first actuating units apply driving forces to both ends of the movable part respectively, which also improves the uniformity of force on the movable part.

[0026] In some embodiments that may include the above-described embodiments, the actuation module further includes a ferromagnetic material. The ferromagnetic material generates a magnetic force with the first or second magnet to hold the movable part in a set position. For example, the set position may be the initial position of the movable part, i.e., the position when the movable part is not rotating. With the above configuration, after the actuation unit drives the movable part to rotate, the magnetic force between the ferromagnetic material and the first or second magnet can cause the movable part to return to the set position, facilitating the next optical image stabilization operation.

[0027] In some examples, the ferromagnetic material can be disposed on the fixed part; for example, the ferromagnetic material can be disposed on the second cavity wall, and the ferromagnetic material can be positioned facing the south or north pole of the first magnet. In other examples, the second coil is disposed on the fourth cavity wall, and correspondingly, the ferromagnetic material can also be disposed on the fourth cavity wall, and the ferromagnetic material can be positioned facing the south or north pole of the second magnet.

[0028] In some embodiments that may include the above-described embodiments, the surface of the first magnet facing the first coil is curved, and the center line of the curved surface is collinear with the first axis. For example, the surface of the first magnet facing the first coil can be a convex spherical surface or a cylindrical surface, with the center of the sphere located on the first axis and the center line of the cylindrical surface collinear with the first axis. This configuration avoids interference between the first magnet and the fixed part when the movable part rotates around the first axis. Furthermore, the curved surface of the first magnet facing the first coil, while ensuring no interference occurs between the first magnet and the fixed part, can shorten the distance between the first magnet and the first coil, thereby reducing the size of the actuation module and facilitating miniaturization.

[0029] And / or, the surface of the second magnet facing the second coil is curved, and the centerline of the curved surface is collinear with the second axis. For example, the surface of the second magnet facing the second coil can be a convex sphere or a cylindrical surface, with the center of the sphere located on the first axis and the centerline of the cylindrical surface collinear with the first axis. This configuration avoids interference between the second magnet and the fixed part when the moving part rotates around the second axis; on the other hand, the curved surface of the second magnet facing the second coil, while ensuring no interference between the second magnet and the fixed part, can shorten the distance between the second magnet and the second coil, thereby reducing the size of the actuation module and facilitating miniaturization.

[0030] In some embodiments that may include the above embodiments, the actuation module further includes a first detection element and a second detection element, wherein the first detection element is used to detect the rotation angle of the movable part about a first axis, and the second detection element is used to detect the rotation angle of the movable part about a second axis.

[0031] With this configuration, when the movable part is driven to rotate around the first axis by the first actuator, the first detection element also detects the rotation angle of the movable part, achieving closed-loop control. This improves the rotation accuracy of the movable part and enhances the optical image stabilization effect. Similarly, when the movable part is driven to rotate around the second axis by the second actuator, the second detection element also detects the rotation angle of the movable part, achieving closed-loop control. This also improves the rotation accuracy of the movable part and enhances the optical image stabilization effect.

[0032] In some examples, the first detection element may include a first Hall element, which may be disposed on the fixed part and may face the first magnet. The first Hall element may detect the position of the first magnet to detect the rotation angle of the movable part about the first axis.

[0033] In other examples, the first detection element includes a first Hall element and a first detection magnet. The first detection magnet can be disposed on the movable part, and the first Hall element is disposed on the fixed part. The first Hall element faces the first detection magnet to detect the position of the first detection magnet, thereby realizing the detection of the rotation angle of the movable part around the first axis.

[0034] In the implementation where the support is positioned between the third cavity wall and the movable part, the first Hall element can be disposed on the third cavity wall, and the corresponding first detection magnet can be disposed at the end of the movable part facing the third cavity wall. This arrangement results in a greater distance between the first Hall element and the first coil, preventing the magnetic field generated by the first coil from affecting the first Hall element and thus improving detection accuracy.

[0035] In some embodiments, the second detection element may include a second Hall element disposed on the fixed portion and facing the second magnet. The second Hall element can detect the position of the second magnet to detect the rotation angle of the movable portion around the second axis.

[0036] In other embodiments, the second actuation unit includes two second coils spaced apart along the second axis. Correspondingly, a second Hall element can be disposed between the two second coils to reduce the influence of the magnetic field generated by the second coils on the second Hall element, thereby improving the detection accuracy.

[0037] In other embodiments, the second detection element may include a magnetic grating and a magnetoresistive sensor. The magnetoresistive sensor is a magnetic sensor based on the quantum tunneling effect, which can measure displacement by detecting changes in the magnetic field. Accordingly, the magnetic grating may be disposed on the movable part, and the magnetoresistive sensor may be disposed on the fixed part, with the magnetoresistive sensor facing the magnetic grating, to detect the rotation angle of the movable part about the second axis.

[0038] In some embodiments that may include the above-described embodiments, the fixing part forms a fixing cavity, which is rectangular in shape, with two adjacent cavity walls serving as open sides. The movable part is also rectangular in shape and is disposed within the fixing cavity. The movable part is used to fix an optical element, which includes a prism. The light-incident surface and the light-exit surface of the prism correspond to the two open sides of the fixing cavity, respectively. The fixing cavity includes a fixed sidewall, and both the fixed sidewall and the two open sides are parallel to a first axis. A support member is disposed between the fixed sidewall and the movable part. This configuration, with the movable part disposed within the fixing cavity, reduces the size of the actuation module, facilitating miniaturization.

[0039] Secondly, embodiments of this application also provide a lens module, including an optical element and an actuation module as described above, wherein the optical element is disposed on a movable portion. The lens module in this application includes the actuation module described in the above embodiments, thus achieving the same technical effects and solving the same technical problems.

[0040] In some embodiments that may include the above-described examples, the optical element includes at least one of a prism and a lens assembly. By moving the optical element of the lens module through an actuation module, optical image stabilization can be achieved, thereby improving the image quality acquired by the lens module.

[0041] In some embodiments that may include the above-described examples, lenses are provided on the light-incident and / or light-exit sides of the prism. The lenses allow for the adjustment of light to improve image quality.

[0042] Thirdly, embodiments of this application also provide an electronic device, including: a motherboard and a lens module as described above, the lens module being disposed on the motherboard. The electronic device in this application includes the lens module described in the above embodiments, thus achieving the same technical effects and solving the same technical problems. Attached Figure Description

[0043] Figure 1 is a schematic diagram of the structure of the electronic device provided in an embodiment of this application;

[0044] Figure 2 is a schematic diagram of the lens module provided in an embodiment of this application;

[0045] Figure 3 is a schematic diagram of the lens module provided in an embodiment of this application.

[0046] Figure 4 is an exploded view of the actuation module provided in the embodiment of this application from a first perspective.

[0047] Figure 5 is a structural schematic diagram of the fixing part in Figure 4;

[0048] Figure 6 is an exploded view of the actuation module provided in the embodiment of this application from a second perspective;

[0049] Figure 7 is a schematic diagram of the movable part structure in Figure 6;

[0050] Figure 8 is a schematic diagram of the structure of the second detection element in the actuation module provided in the embodiment of this application, which includes a magnetic grating and a magnetoresistive sensor.

[0051] Figure 9 is an exploded view of the actuation module provided in the embodiment of this application when the first axis is A0 axis and the second axis is C0 axis;

[0052] Figure 10 is a schematic diagram of the structure of the movable part in Figure 9;

[0053] Figure 11 is a schematic diagram of the structure of the fixing part in Figure 9.

[0054] Explanation of reference numerals in the attached drawings: 1: Middle frame; 2: Display panel; 3: Cover; 4: Main board; 5: Lens module; 6: Actuation module; 10: Fixing part; 20: Moving part; 30: Support; 40: Actuation part; 60: Magnetic assembly; 70: Ferromagnetic body; 110: Fixing cavity; 111: Opening side; 112: First cavity wall; 113: Second cavity wall; 114: Third cavity wall; 115: Fourth cavity wall; 201: Fixing groove; 310: Sphere; 311: Limiting groove; 312: First limiting groove; 313: Second limiting groove; 320: Rolling element; 321: Arc-shaped groove; 322: mounting groove; 331: first connecting plate; 332: second connecting plate; 410: first actuating part; 411: first coil; 412: first magnet; 420: second actuating part; 421: second coil; 422: second magnet; 501: lens assembly; 502: prism; 503: lens; 504: optical sensor; 510: first detection element; 511: first Hall element; 512: first detection magnet; 520: second detection element; 521: second Hall element; 522: magnetic grating; 523: magnetoresistive sensor. Detailed Implementation

[0055] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0056] Connection / Link: should be interpreted broadly. For example, "connection" can be a fixed connection, an electrical connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium.

[0057] This application provides an electronic device, which may include a mobile phone, tablet computer, camera, smartwatch, etc. This application does not limit the scope of the electronic device. The following description uses a mobile phone as an example; however, this application is not limited to this.

[0058] Referring to Figure 1, in the implementation of an electronic device including a mobile phone, the electronic device may include a mid-frame 1, a cover 3, and a display panel 2. The mid-frame 1 encloses an accommodating space, the display panel 2 covers one side of the mid-frame 1, and the cover 3 covers the other side of the mid-frame 1 to enclose the accommodating space. The electronic device may also include a motherboard 4 and a battery. Both the motherboard 4 and the battery are disposed within the accommodating space. The motherboard 4 is electrically connected to the display panel 2 to control the display panel 2 to display images, and the battery is electrically connected to the motherboard 4 to supply power to the motherboard 4.

[0059] The cover 3 can be placed over the battery, and therefore the cover 3 is generally also called a battery cover or back cover. For example, the material of the cover 3 can include metallic materials such as steel, copper, and aluminum. Of course, the material of the cover 3 can also include non-metallic materials such as ceramics and plastics. This application embodiment does not limit this.

[0060] In the above embodiments, the electronic device may further include a lens module 5, which is disposed within the accommodating space and may be mounted on the motherboard 4. For example, the lens module 5 may be connected to the motherboard 4 by welding or screwing. The cover 3 is provided with a light-transmitting hole, and the lens module 5 is positioned directly opposite the light-transmitting hole, allowing it to acquire external images. The lens module 5 is also electrically connected to the motherboard 4, and can convert the acquired external images into electrical signals and send them to the motherboard 4. For example, the lens module 5 may include a wide-angle camera and / or a telephoto camera, etc.

[0061] Referring to Figure 2, in the above implementation, the lens module 5 may include an optical sensor 504 and a lens assembly 501. The optical sensor 504 is disposed on the light-emitting side of the lens assembly 501. The lens assembly 501 can acquire external images and image the images onto the optical sensor 504. The optical sensor 504 can convert light signals into electrical signals and transmit the electrical signals to the motherboard 4 to realize the functions of taking pictures or recording videos.

[0062] In some examples, the lens module 5 may also include a focusing device connected to the lens assembly 501. The focusing device can adjust the distance between the lens assembly 501 and the optical sensor 504 to improve image quality. The focusing device may include a voice coil motor, or it may include a turbine, a worm gear, and a motor. The motor shaft is driven by the worm gear, and the turbine is rotatably connected to the lens assembly 501. The turbine meshes with the worm gear, and the lens assembly 501 is moved by the motor driving the worm gear to achieve focusing. This application does not limit the focusing device.

[0063] In some examples, the lens assembly 501 may include several convex lenses and several concave lenses arranged along the optical axis B0 to ensure high imaging quality. This application embodiment does not limit the number of convex and concave lenses included in the lens assembly 501.

[0064] Referring to Figure 3, in some implementations, the lens module 5 also includes a prism 502. The prism 502 can be disposed on the light-incident side or the light-outcident side of the lens assembly 501. The direction of light can be changed by the prism 502 to meet different usage scenarios. For example, in some implementations, the prism 502 can be disposed on the light-incident side of the lens assembly 501. The prism 502 can include a light-incident surface and a light-outcident surface, which can be arranged perpendicularly, i.e., the prism 502 is a right-angle prism. Correspondingly, after the external light passes through the prism 502, the light changes from a direction perpendicular to the motherboard 4 as shown in Figure 1 to a direction parallel to the motherboard 4. This allows the lens assembly 501 and the optical sensor 504 to be spaced apart along a direction parallel to the motherboard 4. Therefore, the focusing range of the lens module 5 is not limited by the thickness of the electronic device, and the focal length of the lens module 5 can be set to be larger. For example, the lens module 5 can be a telephoto camera.

[0065] In some examples, a lens 503 is provided on the light-incident side of the prism 502. The lens 503 can adjust the light to improve image quality. Exemplarily, the lens 503 may include a convex lens or a concave lens. Exemplarily, the lens 503 may be disposed on the light-incident surface of the prism 502. For example, the lens 503 may be an integral structure with the prism 502, or the lens 503 and the prism 502 may be connected by optical adhesive. This application embodiment does not impose any limitations on this.

[0066] In some examples, a lens 503 is provided on the light-emitting side of the prism 502. For example, the lens 503 can be disposed on the light-emitting surface of the prism 502. The lens 503 can adjust the light to improve image quality. For example, the lens 503 can include a convex lens or a concave lens; the lens 503 can be an integral structure with the prism 502, or the lens 503 and the prism 502 can be connected by optical adhesive. This application embodiment does not impose any limitations on this.

[0067] In other examples, lenses 503 are provided on both the light-incident and light-exit sides of prism 502 to improve the light adjustment effect. For example, the lens 503 on the light-incident side may include a convex lens or a concave lens, and the lens 503 on the light-exit side may also include a convex lens or a concave lens.

[0068] Please refer to Figures 4 and 5, where Figure 5 is a structural schematic diagram of the fixing part in Figure 4. In this embodiment, the lens module 5 shown in Figure 1 further includes an actuation module 6. The actuation module 6 can be connected to the optical element, and can drive the optical element to move or rotate to resist the shaking of the electronic device during shooting or recording, thereby achieving optical image stabilization. For example, the optical element may include the lens assembly 501 and / or prism 502 in the above implementation (as shown in Figure 3), and this embodiment does not limit this.

[0069] It is understood that although the embodiments of this application are described using the actuator module 6 for optical image stabilization of the lens module 5 as an example, the actuator module 6 can also be used in other driving scenarios, and the embodiments of this application do not limit the application scenarios of the actuator module 6.

[0070] In this embodiment, the actuation module 6 includes a fixed part 10 and a movable part 20. For example, the fixed part 10 can be connected to the mainboard 4 shown in FIG. 1, and the movable part 20 is disposed on the fixed part 10. In some examples, the fixed part 10 is provided with a fixing cavity 110, and the movable part 20 can be disposed within the fixing cavity 110. This configuration, with the movable part 20 disposed within the fixing cavity 110, reduces the size of the actuation module 6, facilitating miniaturization.

[0071] In the implementation of the optical element including prism 502, prism 502 can be a right-angle prism. Correspondingly, the fixed cavity 110 can be cuboid in shape. Two adjacent cavity walls in the fixed cavity 110 are open sides 111, and both open sides 111 are parallel to the second axis. That is, two adjacent side surfaces of the fixed part 10 are provided with openings connecting to the fixed cavity 110. The movable part 20 is generally cuboid in shape and is disposed inside the fixed cavity 110. Each surface of the movable part 20 corresponds to a surface of the fixed cavity 110. Prism 502 is disposed on the movable part 20. The light-incident surface and the light-exit surface of prism 502 correspond to the two open sides 111, respectively. That is, the light-incident surface of prism 502 faces one opening, and the light-exit surface of prism 502 faces the other opening, so as to prevent the fixed part 10 from blocking the light entering or exiting the prism 502.

[0072] In some implementations, a fixing groove 201 is provided on the active part 20, and the prism 502 is disposed in the fixing groove 201. This arrangement can further reduce the volume of the actuation module 6.

[0073] Referring to Figures 4 and 5, in this embodiment of the application, the actuation module 6 further includes a support member 30. The movable part 20 and the fixed part 10 are connected by the support member 30. The support member 30 allows the movable part 20 to rotate relative to the fixed part 10 around a first axis and a second axis. The first axis is perpendicular to the second axis, so that the movable part 20 can rotate in two directions, thereby improving the anti-shake effect.

[0074] For example, the fixed cavity includes a fixed sidewall, and the fixed sidewall and two open sides are parallel to the first axis. The support member 30 is disposed between the fixed sidewall and the movable part 20.

[0075] In the implementation of the optical device including the right-angle prism 502, the principal optical axis of the lens module 5 (as shown in Figure 3, axis B0) is perpendicular to the light-emitting surface, axis A0 is perpendicular to the light-incident surface, and axis C0 is perpendicular to both axis B0 and axis A0. Correspondingly, the first axis and the second axis can be any two of axis B0, axis A0, and axis C0, such as: the first axis is axis A0 (parallel to the Y-axis), and the second axis can be axis B0 (parallel to the X-axis) or axis C0 (parallel to the Z-axis); or the first axis is axis B0, and the second axis is axis A0 or axis C0; or the first axis is axis C0, and the second axis is axis A0 or axis B0.

[0076] The following description will take the first axis as B0 axis and the second axis as C0 axis as an example; however, the embodiments of this application are not limited thereto.

[0077] In this embodiment of the application, at least one of the fixed part 10 and the movable part 20 is provided with a limiting groove 311, and the support member includes a ball 310, which is rotatably disposed in the limiting groove 311.

[0078] In some examples, the fixed part 10 is provided with a limiting groove 311, and the ball 310 can be connected to the movable part 20 (e.g., screwed or snap-fitted). The ball 310 is rotatably disposed within the limiting groove 311 so that the movable part 20 is suspended on the fixed part 10 via the ball 310. The center of the ball 310 can be located at the intersection of the first axis and the second axis to allow the movable part 20 to rotate relative to the fixed part 10 about the first and second axes.

[0079] In some examples, the movable part 20 is provided with a limiting groove 311, and the ball 310 can be connected to the fixed part 10 (e.g., by screwing or snapping). The ball 310 is rotatably disposed within the limiting groove 311 so that the movable part 20 is suspended on the fixed part 10 via the ball 310. The center of the ball 310 can be located at the intersection of the first axis and the second axis to allow the movable part 20 to rotate relative to the fixed part 10 about the first and second axes.

[0080] Referring to Figures 4 and 6, in some examples, both the movable part 20 and the fixed part 10 are provided with limiting grooves 311. That is, the limiting grooves 311 include a first limiting groove 312 and a second limiting groove 313. The first limiting groove 312 is located on the fixed part 10, and the second limiting groove 313 is located on the movable part 20. The sphere 310 is disposed within the receiving space formed by the first limiting groove 312 and the second limiting groove 313. The center of the sphere 310 can be located at the intersection of the first axis and the second axis to allow the movable part 20 to rotate relative to the fixed part 10 around the first axis and the second axis.

[0081] By providing limiting grooves 311 on both the movable part 20 and the fixed part 10, the ball 310 can rotate relative to the fixed part 10 and the movable part 20, thereby increasing the degree of freedom of movement of the ball 310.

[0082] In some embodiments, the sphere 310 contacts the three first contact surfaces of the first limiting groove 312. For example, the first limiting groove 312 is formed as a triangular pyramidal groove, meaning the first limiting groove 312 is triangular in shape (triangular groove), and the three first contact surfaces are the three sidewalls of the triangular pyramid. The sphere 310 is tangential to and in contact with the three first contact surfaces. And / or, the sphere 310 also contacts the three second contact surfaces of the second limiting groove 313. For example, the second limiting groove 313 is formed as a triangular pyramidal groove, meaning the second limiting groove 313 is triangular in shape (triangular groove), and the three second contact surfaces are the three sidewalls of the triangular pyramid. The sphere 310 is tangential to and in contact with the three second contact surfaces. This configuration reduces the contact area between the sphere 310 and the first limiting groove 312 and the second limiting groove 313, thereby ensuring the stability of the sphere 310's rotation.

[0083] It is understood that in other embodiments, the first limiting groove 312 and the second limiting groove 313 may both be partial spherical shells, and the sphere 310 is accommodated in the first limiting groove 312 and the second limiting groove 313 so that the sphere 310 can rotate within the first limiting groove 312 and the second limiting groove 313.

[0084] Referring again to Figures 5 and 6, in the above embodiment, the support member 30 further includes a rolling element 320. At least one of the fixed part 10 and the movable part 20 is provided with an arc-shaped groove 321. The rolling element 320 is disposed within the arc-shaped groove 321, and the center of the arc of the arc-shaped groove 321 is located on the first axis (an axis parallel to the X-axis). When the movable part 20 rotates relative to the fixed part 10 around the first axis, the rolling element 320 rolls within the arc-shaped groove 321 around the first axis. The rolling element 320 supports the movable part 20 to ensure the stability of the movable part 20 during rotation. The line connecting the limiting groove 311 and the arc-shaped groove 321 is collinear with the second axis (an axis parallel to the Z-axis, such as the C0 axis in Figure 6) to allow the movable part 20 to rotate relative to the fixed part 10 around the second axis. During rotation, the rolling element 320 supports the movable part 20, improving the stability of the movable part 20 during rotation.

[0085] It is understood that the arc-shaped groove 321 includes an arc-shaped first groove wall and a second groove wall, which are arranged opposite to each other. The arc centers of the first and second groove walls coincide. The first and second groove walls can restrict the position of the rolling element 320 so that the rolling element 320 can roll around the first axis. The line connecting the arc-shaped groove 321 and the limiting groove 311 can be the bisector of the central angle corresponding to the first groove wall in the arc-shaped groove 321. The limiting groove 311 is located on this bisector, so that the center of the ball 310 is also located on this bisector, thereby allowing the movable part 20 to rotate around the second axis.

[0086] In the above implementation, the distance between the first groove wall and the second groove wall can be slightly greater than the width of the rolling element 320, that is, there is a certain gap between the rolling element 320 and the first groove wall and / or the second groove wall, so as to reduce the rolling resistance of the rolling element 320.

[0087] In some examples, the arcuate groove 321 can be provided on the fixed part 10, and the corresponding rolling element 320 can abut against the movable part 20. In some examples, the arcuate groove 321 can be provided on the movable part 20, and the corresponding rolling element 320 can abut against the fixed part 10. In some embodiments, arcuate grooves 321 can be provided on both the movable part 20 and the fixed part 10, and the corresponding rolling element 320 can abut against the bottom of the two arcuate grooves 321.

[0088] It is understood that in the embodiments of this application, the rolling element 320 may include a ball or a roller. In the implementation where the rolling element 320 includes a roller, the axis of the roller may be set parallel to the first axis so that when the movable part 20 rotates around the first axis, the roller can roll in the arc groove 321.

[0089] Referring again to Figures 5 and 6, in some implementations, the rolling element 320 includes a ball, an arcuate groove 321 is provided on the fixed part 10, and a mounting groove 322 is provided on the movable part 20. The line connecting the mounting groove 322 and the limiting groove 311 is collinear with the second axis. The ball is disposed within the receiving space formed by the mounting groove 322 and the arcuate groove 321. With this configuration, the position of the ball can be restricted by the mounting groove 322, ensuring that the center of the ball is located on the second axis, allowing the movable part 20 to rotate around the second axis.

[0090] In some implementations, the mounting groove 322 has two angled third contact surfaces, both of which contact the ball. For example, the mounting groove 322 can be triangular prism-shaped, with the centerline of the prism parallel to the second axis. The two third contact surfaces are the two faces of the prism, and the ball is tangential to and in contact with both third contact surfaces. This configuration reduces the contact area between the ball and the mounting groove 322, thereby ensuring the stability of the ball's rotation.

[0091] In some implementations, the two third contact surfaces extend in a direction parallel to the second axis, and the minimum dimension of the mounting groove 322 in the direction of the second axis is greater than the sum of the outer diameters of all the balls within the mounting groove 322. This configuration ensures that the width of the mounting groove 322 along the second axis is greater than the sum of the dimensions of all the balls along the second axis, allowing the balls to move within the mounting groove 322 along the second axis to avoid interference caused by collisions between adjacent balls.

[0092] In some implementations, there can be multiple balls (e.g., 2, 3, 4, etc.), which are arranged along the second axis within the mounting groove 322. This arrangement allows multiple balls to simultaneously support the movable part 20, improving its stability.

[0093] Referring again to Figure 6, the actuation module 6 in this embodiment further includes an actuation unit 40, which is connected to both the fixed unit 10 and the movable unit 20. The actuation unit 40 is used to drive the movable unit 20 to rotate around the first axis and / or the second axis. In the implementation of optical image stabilization of the lens module 5 (as shown in Figure 1) through the actuation module 6, the motherboard 4 can output a drive signal to the actuation unit 40 according to the shaking direction of the electronic device during shooting, thereby driving the movable unit 20 to rotate around the first axis and / or the second axis, so that the movable unit 20 produces a displacement opposite to the shaking direction, so that the optical element remains stable in space, improving the image quality, and thus improving the image quality acquired by the lens module 5.

[0094] In this embodiment of the actuation module 6, the movable part 20 is disposed on the fixed part 10, and the support member 30 includes a ball 310 and a rolling element 320. At least one of the fixed part 10 and the movable part 20 is provided with a limiting groove 311, and the ball 310 is rotatably disposed in the limiting groove 311. At least one of the fixed part 10 and the movable part 20 is also provided with an arc-shaped groove 321, the center of which is located on the first axis, allowing the support member 30 to rotate about the first axis. The limiting groove 311 and the arc-shaped groove 321... The line connecting the fixed part 10 and the movable part 20 is collinear with the second axis, so that the support 30 allows the movable part 20 to rotate around the second axis; the actuating part 40 is connected to both the fixed part 10 and the movable part 20, and the actuating part 40 can drive the movable part 20 to rotate around the first axis and / or the second axis, so that the movable part 20 can generate a displacement opposite to the direction of the electronic device jitter, thereby maintaining the position of the optical element in space, eliminating or reducing the impact of electronic device jitter on image quality, thereby improving imaging quality, and thus improving the image quality acquired by the lens module 5.

[0095] With further reference to FIG. 4 and FIG. 6, in some embodiments, the fixing portion 10 is provided with a first connection plate 331, the first limiting groove 312 is disposed on the first connection plate 331, the movable portion 20 is provided with a second connection plate 332, the second limiting groove 313 is disposed on the second connection plate 332, and the first connection plate 331 is arranged facing the second connection plate 332, so that the ball 310 can be retained within the first limiting groove 312 and the second limiting groove 313. Through the above arrangement, the first limiting groove 312 can be formed on the first connection plate 331 first, and then the fixing portion 10 is manufactured or the first connection plate 331 is mounted on the fixing portion 10. Compared with forming the first limiting groove 312 directly on the fixing portion 10, the difficulty of manufacturing the fixing portion 10 can be reduced. Similarly, the second limiting groove 313 can be formed on the second connection plate 332 first, and then the movable portion 20 is manufactured or the second connection plate 332 is mounted on the movable portion 20. Compared with forming the second limiting groove 313 directly on the movable portion 20, the difficulty of manufacturing the movable portion 20 can be reduced.

[0096] Exemplarily, the first connection plate 331 may be formed as an integral structure with the fixing portion 10 in the form of a metal insert, that is, when manufacturing the fixing portion 10, the first connection plate 331 is placed in an injection mold, and injection molding of the fixing portion 10 is performed, so as to fix the first connection plate 331 and the fixing portion 10 while forming the fixing portion 10. Similarly, the second connection plate 332 is formed as an integral structure with the movable portion 20 in the form of a metal insert, that is, when manufacturing the movable portion 20, the second connection plate 332 is placed in an injection mold, and injection molding of the movable portion 20 is performed, so as to fix the second connection plate 332 and the movable portion 20 while forming the movable portion 20.

[0097] In other implementations, the first connection plate 331 may also be connected to the fixing portion 10 by means of adhesive bonding, bolt connection or the like, and the second connection plate 332 may also be connected to the movable portion 20 by means of adhesive bonding, bolt connection or the like, which is not limited in the embodiments of the present application.

[0098] In the embodiments of the present application, the minimum distance L between the surface provided with the first limiting groove 312 and the surface provided with the second limiting groove 313 satisfies: 0mm<L≤10mm. Exemplarily, L may be 0.5mm, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc. Such arrangement ensures that there is a sufficient distance between the surface of the fixing portion 10 provided with the first limiting groove 312 and the surface of the movable portion 20 provided with the second limiting groove 313, so as to avoid interference between these two surfaces that would affect the rotation angle of the movable portion 20, and ensure the optical image stabilization effect.

[0099] In some examples, the minimum distance L between the surface provided with the first limiting groove 312 and the surface provided with the second limiting groove 313 satisfies: 2mm<L≤10mm. For example, L may be 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc., so as to ensure that there is a sufficient distance between the surface of the fixing portion 10 provided with the first limiting groove 312 and the surface of the movable portion 20 provided with the second limiting groove 313.

[0100] It can be understood that, in the implementation manner where the first connecting plate 331 is disposed on the fixing portion 10 and the second connecting plate 332 is disposed on the movable portion 20, the first limiting groove 312 is disposed on the first connecting plate 331, the second limiting groove 313 is disposed on the second connecting plate 332, and correspondingly, the distance L may be the minimum distance between the first connecting plate 331 and the second connecting plate 332.

[0101] Please refer to FIG. 6 and FIG. 7, where FIG. 7 is a schematic structural diagram of the movable portion in FIG. 6. In some embodiments, the actuation module 6 further includes a magnetic attraction assembly 60. The magnetic attraction assembly 60 is connected to the fixing portion 10 and the movable portion 20 respectively, and the magnetic attraction assembly 60 is configured to generate a magnetic force that draws the first limiting groove 312 and the second limiting groove 313 close to each other. With such an arrangement, the magnetic force generated by the magnetic attraction assembly 60 can keep the groove walls of the first limiting groove 312 and the second limiting groove 313 in contact with the sphere 310, so as to prevent the sphere 310 from falling out of the first limiting groove 312 and the second limiting groove 313.

[0102] In some examples, the magnetic attraction assembly 60 may include a first magnet and a second magnet. The first magnet may be disposed on the fixing portion 10, the second magnet may be disposed on the movable portion 20, and the first magnet and the second magnet attract each other to generate the magnetic force that draws the first limiting groove 312 and the second limiting groove 313 close to each other. In the implementation manner where the first connecting plate 331 is disposed on the fixing portion 10 and the second connecting plate 332 is disposed on the movable portion 20, the first magnet may be disposed on the first connecting plate 331, and the second magnet may be disposed on the second connecting plate 332, so as to reduce the distance between the first magnet and the second magnet, thereby increasing the magnetic force and further preventing the sphere 310 from falling out of the first limiting groove 312 and the second limiting groove 313.

[0103] In some examples, the magnetic attraction component 60 includes a magnet and a first ferromagnetic body. The material of the first ferromagnetic body can include ferromagnetic materials such as iron, cobalt, and nickel that can be attracted by the magnet. The magnet can be disposed on the fixed part 10, and the first ferromagnetic body can be disposed on the movable part 20. The magnet attracts the first ferromagnetic body to generate a magnetic force that brings the first limiting groove 312 and the second limiting groove 313 closer together. In an implementation where the first connecting plate 331 is disposed on the fixed part 10 and the second connecting plate 332 is disposed on the movable part 20, the magnet can be disposed on the first connecting plate 331, and the first ferromagnetic body can be disposed on the second connecting plate 332 to reduce the distance between the magnet and the first ferromagnetic body, thereby increasing the magnetic force and further preventing the ball 310 from falling out of the first limiting groove 312 and the second limiting groove 313. When the material of the second connecting plate 332 is a ferromagnetic material, the second connecting plate 332 can serve as the first ferromagnetic body to simplify the structure of the magnetic attraction component 60.

[0104] In some examples, the magnetic attraction component 60 includes a magnet and a first ferromagnet. The material of the first ferromagnet can include iron, cobalt, nickel, or other materials that can be attracted by a magnet. The magnet can be disposed on the movable part 20, and the first ferromagnet can be disposed on the fixed part 10. The magnet attracts the first ferromagnet to generate a magnetic force that brings the first limiting groove 312 and the second limiting groove 313 closer together. In an implementation where the first connecting plate 331 is disposed on the fixed part 10 and the second connecting plate 332 is disposed on the movable part 20, the magnet can be disposed on the second connecting plate 332, and the first ferromagnet can be disposed on the first connecting plate 331 to reduce the distance between the magnet and the first ferromagnet, thereby increasing the magnetic force and further preventing the ball 310 from falling out of the first limiting groove 312 and the second limiting groove 313. When the material of the first connecting plate 331 is a ferromagnetic material, the first connecting plate 331 can serve as the first ferromagnet to simplify the structure of the magnetic attraction component 60.

[0105] Referring again to Figures 6 and 7, in this embodiment, the actuating part 40 includes a first actuating part 410 and a second actuating part 420. The first actuating part 410 is connected to both the fixed part 10 and the movable part 20, and is used to drive the movable part 20 to rotate around a first axis. The second actuating part 420 is connected to both the fixed part 10 and the movable part 20, and is used to drive the movable part 20 to rotate around a second axis. With this configuration, the two rotational directions of the movable part 20 are driven by the first actuating part 410 and the second actuating part 420 respectively, facilitating precise control of each rotational direction.

[0106] In some examples, the first actuation part 410 includes a first coil 411 and a first magnet 412. The first magnet 412 is disposed on one of the movable part 20 and the fixed part 10, and the first coil 411 is disposed on the other of the movable part 20 and the fixed part 10. For example, the first magnet 412 is disposed on the movable part 20, and the first coil 411 is disposed on the fixed part 10. The first magnet 412 being disposed on the movable part 20 can prevent the power supply line for the first coil 411 from affecting the rotation of the movable part 20. As shown in FIG4, in the implementation where the movable part 20 is disposed in the fixed cavity 110 of the fixed part 10, the fixed cavity 110 has a first cavity wall 112 perpendicular to both opening sides 111. The first coil 411 can be disposed on the first cavity wall 112, and the first magnet 412 can be disposed on the end of the movable part 20 facing the first cavity wall 112. By controlling the first coil 411 to be energized, the first magnet 412 can be subjected to force to drive the movable part 20 to rotate around the first axis.

[0107] In some embodiments, there may be two first actuating units 410. Correspondingly, the fixed cavity 110 also has a second cavity wall 113 disposed opposite to the first cavity wall 112. The first coil 411 of one first actuating unit 410 is disposed on the first cavity wall 112, and the first coil 411 of the other first actuating unit 410 is disposed on the second cavity wall 113. One first magnet 412 is disposed on the end of the movable part 20 facing the first cavity wall 112, and the other first magnet 412 is disposed on the end of the movable part 20 facing the second cavity wall 113. During operation, the two first coils 411 are energized simultaneously, which allows the two first magnets 412 to be subjected to force simultaneously, thereby driving the movable part 20 to rotate around the first axis, increasing the driving force and improving the sensitivity. In addition, the two first actuating units 410 apply driving forces to both ends of the movable part 20 respectively, which also improves the uniformity of the force on the movable part 20.

[0108] Referring again to Figure 6, in some implementations, the surface of the first magnet 412 facing the first coil 411 is curved, and the center line of the curved surface is collinear with the first axis. For example, the surface of the first magnet 412 facing the first coil 411 can be a convex spherical surface or a cylindrical surface, with the center of the sphere located on the first axis and the center line of the cylindrical surface collinear with the first axis. This configuration avoids interference between the first magnet 412 and the fixed part 10 when the movable part 20 rotates around the first axis. Furthermore, the curved surface of the first magnet 412 facing the first coil 411, while ensuring no interference occurs between the first magnet 412 and the fixed part 10, shortens the distance between the first magnet 412 and the first coil 411, thereby reducing the size of the actuation module 6 and facilitating miniaturization.

[0109] Referring to Figures 4 and 6, in some embodiments, the second actuation unit 420 includes a second coil 421 and a second magnet 422. The second coil 421 is disposed on one of the movable part 20 and the fixed part 10, and the second magnet 422 is disposed on the other of the movable part 20 and the fixed part 10. For example, the second coil 421 is disposed on the fixed part 10, and the second magnet 422 is disposed on the movable part 20. This arrangement can prevent the power supply line for the second coil 421 from affecting the rotation of the movable part 20. In an implementation where the movable part 20 is disposed within the fixed cavity 110 of the fixed part 10, the fixed sidewalls include a third cavity wall 114 and a fourth cavity wall 115 located between the first cavity wall 112 and the second cavity wall 113. The third cavity wall 114 is adjacent to an opening side 111, and the fourth cavity wall 115 is adjacent to another opening side 111. In some examples, the support member 30 may be disposed between the third cavity wall 114 and the movable part 20. Correspondingly, the second coil 421 may be disposed on the fourth cavity wall 115, and the second magnet 422 may be disposed on the end of the movable part 20 facing the fourth cavity wall 115.

[0110] In other examples, the support 30 is disposed between the fourth cavity wall 115 and the movable part 20, and correspondingly, the second coil 421 may be disposed on the third cavity wall 114, and the second magnet 422 is disposed at the end of the movable part 20 facing the third cavity wall 114.

[0111] As shown in Figures 6 and 7, in some implementations, the surface of the second magnet 422 facing the second coil 421 is curved, and the centerline of the curved surface is collinear with the second axis. For example, the surface of the second magnet 422 facing the second coil 421 can be a convex spherical surface or a cylindrical surface, with the center of the spherical surface located on the first axis, and the centerline of the cylindrical surface collinear with the first axis. This configuration avoids interference between the second magnet 422 and the fixed part 10 when the movable part 20 rotates around the second axis. Furthermore, the curved surface of the second magnet 422 facing the second coil 421, while ensuring no interference between the second magnet 422 and the fixed part 10, allows for a shorter distance between the second magnet 422 and the second coil 421, thereby reducing the size of the actuation module 6 and facilitating miniaturization.

[0112] Referring again to Figure 4, in this embodiment, the actuation module 6 further includes a ferromagnetic material 70. The ferromagnetic material 70 generates a magnetic force with the first magnet 412 or the second magnet 422 to keep the movable part 20 in a set position. For example, the set position can be the initial position of the movable part 20, i.e., the position when the movable part 20 has not rotated. With the above configuration, after the actuation unit drives the movable part 20 to rotate, the magnetic force between the ferromagnetic material 70 and the first magnet 412 or the second magnet 422 can restore the movable part 20 to the set position, facilitating the next optical image stabilization operation.

[0113] In some examples, the ferromagnetic material 70 is disposed on the fixing part 10. For example, the ferromagnetic material 70 may be disposed on the second cavity wall 113, and the ferromagnetic material 70 may be positioned facing the south or north pole of the first magnet 412. In other examples, the second coil 421 is disposed on the fourth cavity wall 115, and correspondingly, the ferromagnetic material 70 may also be disposed on the fourth cavity wall 115, and the ferromagnetic material 70 may be positioned facing the south or north pole of the second magnet 422.

[0114] Referring to Figures 6 and 7, in this embodiment, the actuation module 6 further includes a first detection element 510 and a second detection element 520. The first detection element 510 detects the rotation angle of the movable part 20 around the first axis, and the second detection element 520 detects the rotation angle of the movable part 20 around the second axis. With this configuration, when the movable part 20 is driven to rotate around the first axis by the first actuation unit 410, the first detection element 510 also detects the rotation angle of the movable part 20, achieving closed-loop control and improving the rotation accuracy of the movable part 20, thus enhancing the optical image stabilization effect. Similarly, when the movable part 20 is driven to rotate around the second axis by the second actuation unit 420, the second detection element 520 also detects the rotation angle of the movable part 20, achieving closed-loop control and improving the rotation accuracy of the movable part 20, thus enhancing the optical image stabilization effect.

[0115] In some examples, the first detection element 510 may include a first Hall element 511, which may be disposed on the fixed part 10 and may face the first magnet 412. The first Hall element 511 may detect the position of the first magnet 412 to detect the rotation angle of the movable part 20 around the first axis.

[0116] Referring to Figures 6 and 7, in other examples, the first detection element 510 includes a first Hall element 511 and a first detection magnet 512. The first detection magnet 512 can be disposed on the movable part 20, and the first Hall element 511 is disposed on the fixed part 10. The first Hall element 511 faces the first detection magnet 512 to detect the position of the first detection magnet 512, thereby realizing the detection of the rotation angle of the movable part 20 around the first axis.

[0117] In the implementation where the support member 30 is positioned between the third cavity wall 114 and the movable part 20 as shown in FIG. 4, the first Hall element 511 can be disposed on the third cavity wall 114, and the corresponding first detection magnet 512 can be disposed at the end of the movable part 20 facing the third cavity wall 114. This arrangement results in a greater distance between the first Hall element 511 and the first coil 411, preventing the magnetic field generated by the first coil 411 from affecting the first Hall element 511 and thus improving detection accuracy.

[0118] In some embodiments, the second detection element 520 may include a second Hall element 521, which is disposed on the fixed part 10 and may face the second magnet 422. The second Hall element 521 can detect the position of the second magnet 422 to detect the rotation angle of the movable part 20 around the second axis.

[0119] As shown in FIG7, in other embodiments, the second actuation unit 420 includes two second coils 421 arranged at intervals along the second axis. Correspondingly, the second Hall element 521 can be arranged between the two second coils 421 to reduce the influence of the magnetic field generated by the second coils 421 on the second Hall element 521, thereby improving the detection accuracy.

[0120] Referring to Figure 8, in other embodiments, the second detection element 520 may include a magnetic grating 522 and a magnetoresistive sensor 523 (Tunnel MagnetoResistance, or TMR). The magnetoresistive sensor 523 is a magnetic sensor based on the quantum tunneling effect, which can measure displacement by detecting changes in the magnetic field. Accordingly, the magnetic grating 522 may be disposed on the movable part 20, and the magnetoresistive sensor 523 may be disposed on the fixed part 10, with the magnetoresistive sensor 523 facing the magnetic grating 522, to detect the rotation angle of the movable part 20 about the second axis.

[0121] Please refer to Figures 9 and 10, where Figure 10 is a schematic diagram of the movable part in Figure 9. In other embodiments, the first axis of the movable part 20 is the A0 axis, and the second axis is the C0 axis, that is, the first axis is parallel to the Y-axis in Figure 9, and the second axis is parallel to the Z-axis in Figure 9. Optical image stabilization can be achieved by rotating the movable part 20 around the first axis and the second axis.

[0122] In the implementation where the fixing part 10 has a fixing cavity 110, the support member 30 can be disposed between the movable part 20 and the fourth cavity wall 115. For example, the first limiting groove 312 and the arcuate groove 321 can be disposed on the first connecting plate 331 located on the fourth cavity wall 115, and the second limiting groove 313 and the mounting groove 322 can be disposed on the second connecting plate 332 located on the movable part 20. The line connecting the arcuate groove 321 and the first limiting groove 312 is parallel to the second axis, and the line connecting the second limiting groove 313 and the mounting groove 322 is also parallel to the second axis, so that the line connecting the ball 310 disposed in the first limiting groove 312 and the second limiting groove 313 and the rolling element 320 disposed in the mounting groove 322 and the arcuate groove 321 is collinear with the second axis, allowing the movable part 20 to rotate about the second axis.

[0123] In some embodiments, there may be two first actuating parts 410, which are respectively disposed at both ends of the movable part 20 along the second axis. The first coil 411 of one first actuating part 410 is disposed on the first cavity wall 112, and the first coil 411 of the other first actuating part 410 is disposed on the second cavity wall 113. The first magnets 412 of the two first braking parts 410 are respectively disposed facing one of the first coils 411. When the two first coils 411 are energized, the two first magnets 412 will be subjected to force, thereby driving the movable part 20 to rotate around the first axis.

[0124] In some embodiments, the ferromagnetic body 70 may be disposed on the first cavity wall 112 or the second cavity wall 113. The magnetic force between the ferromagnetic body 70 and the first magnet 412 can keep the movable part 20 in a set position, which is the position when the movable part 20 does not rotate around the first axis and the second axis.

[0125] As shown in Figure 11, for example, a groove is provided on the first cavity wall 112 or the second cavity wall 113, and the ferromagnetic body 70 can be accommodated in the groove to avoid the ferromagnetic body 70 affecting the rotation of the movable part 20.

[0126] Referring again to Figures 9 and 10, in some embodiments, the second actuation part 420 is disposed between the third cavity wall 114 and the movable part 20. For example, the second coil 421 of the second actuation part 420 is disposed on the third cavity wall 114, and the second magnet 422 of the second actuation part 420 is disposed on the movable part 20, so that by energizing the second coil 421, the second magnet 422 can be subjected to force to drive the movable part 20 to rotate around the second axis.

[0127] In some embodiments, a first detection element 510 is disposed between the fourth cavity wall 115 and the movable part 20 to detect the rotation angle of the movable part 20 about a first axis. For example, a first Hall element may be disposed on the fourth cavity wall 115, and correspondingly, a first detection magnet may be disposed at the end of the movable part 20 facing the fourth cavity wall 115, such as on the side of the second connecting plate 332.

[0128] In some embodiments, the second detection element 520 (as shown in FIG11) may be disposed between the third cavity wall 114 and the movable part 20 to detect the rotation angle of the movable part 20 about the second axis. For example, the second Hall element may be disposed on the third cavity wall 114 and may be disposed facing the second magnet 422 to detect the rotation angle of the movable part 20 about the second axis by detecting the position of the second magnet 422.

[0129] In the implementation where there are two second coils 421, the second Hall element can be placed on the side of one of the second coils 421 away from the other, or the second Hall element can be placed between the two second coils 421, so as to prevent the magnetic field of the two second coils 421 from affecting the detection accuracy of the second Hall element.

[0130] The above description is merely a specific implementation of the embodiments of this application, but the protection scope of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the protection scope of this application. Therefore, the protection scope of this application should be determined by the protection scope of the claims.

Claims

1. An actuation module, characterized by include: Fixing part; The movable part is disposed on the fixed part; A support member, comprising a ball and a rolling element, wherein at least one of the fixed part and the movable part is provided with a limiting groove, and the ball is rotatably disposed within the limiting groove; at least one of the fixed part and the movable part is provided with an arc-shaped groove, the center of the arc-shaped groove being located on a first axis, the line connecting the limiting groove and the arc-shaped groove being collinear with a second axis, and the first axis and the second axis being perpendicular; An actuator is used to drive the movable part to rotate about the first axis and / or the second axis.

2. The actuation module of claim 1, wherein, The limiting groove includes a first limiting groove disposed on the fixed part and a second limiting groove disposed on the movable part, and the sphere is disposed within the receiving space formed by the first limiting groove and the second limiting groove.

3. The actuation module of claim 2, wherein, The sphere contacts the three first contact surfaces of the first limiting groove, and / or the sphere contacts the three second contact surfaces of the second limiting groove.

4. The actuation module according to claim 2 or 3, characterized in that, The first limiting groove is formed as a triangular pyramidal groove, and / or the second limiting groove is formed as a triangular pyramidal groove.

5. The actuation module according to any one of claims 2-4, characterized in that, The rolling element includes a ball, and the movable part is provided with a mounting groove. The line connecting the mounting groove and the limiting groove is collinear with the second axis. The arc-shaped groove is disposed on the fixing part, and the ball is disposed within the receiving space formed by the mounting groove and the arc-shaped groove.

6. The actuation module according to claim 5, characterized in that, The mounting groove has two third contact surfaces set at an angle, both of which are in contact with the ball.

7. The actuation module according to claim 6, characterized in that, There are multiple balls, and the multiple balls are arranged along the second axis.

8. The actuation module according to claim 6 or 7, characterized in that, The two third contact surfaces extend in a direction parallel to the second axis, and the minimum dimension of the mounting groove in the direction of the second axis is greater than the sum of the outer diameters of all the balls in the mounting groove.

9. The actuation module according to any one of claims 2-8, characterized in that, The fixed part is provided with a first connecting plate, and the first limiting groove is provided on the first connecting plate. The movable part is provided with a second connecting plate, and the second limiting groove is provided on the second connecting plate. The first connecting plate faces the second connecting plate.

10. The actuation module according to any one of claims 2-9, characterized in that, The minimum distance L between the surface where the first limiting groove is set and the surface where the second limiting groove is set satisfies: 0mm <L≤10mm。 11. The actuation module according to any one of claims 2-10, characterized in that, The actuation module further includes a magnetic suction component, which is connected to the fixed part and the movable part respectively. The magnetic suction component is used to generate a magnetic force that brings the first limiting groove and the second limiting groove closer to each other.

12. The actuation module according to any one of claims 1-10, characterized in that, The actuating part includes a first actuating part and a second actuating part. The first actuating part is used to drive the movable part to rotate around the first axis; the second actuating part is used to drive the movable part to rotate around the second axis.

13. The actuation module according to claim 12, characterized in that, The first actuation part includes a first coil and a first magnet, the first magnet being disposed on one of the movable part and the fixed part, and the first coil being disposed on the other of the movable part and the fixed part; The second actuation part includes a second coil and a second magnet, the second magnet being disposed on one of the movable part and the fixed part, and the second coil being disposed on the other of the movable part and the fixed part.

14. The actuation module according to claim 13, characterized in that, The actuation module also includes a ferromagnet, which is used to generate a magnetic force with the first magnet or the second magnet so that the moving part is held in a set position.

15. The actuation module according to claim 13 or 14, characterized in that, The surface of the first magnet facing the first coil is a curved surface, and the center line of the curved surface is collinear with the first axis. And / or, the surface of the second magnet facing the second coil is a curved surface, and the center line of the curved surface is collinear with the second axis.

16. The actuation module according to any one of claims 12-15, characterized in that, The actuation module further includes a first detection element and a second detection element. The first detection element is used to detect the rotation angle of the movable part about the first axis, and the second detection element is used to detect the rotation angle of the movable part about the second axis.

17. The actuation module according to any one of claims 1-16, characterized in that, The fixing part forms a fixing cavity, which is rectangular in shape. The two adjacent cavity walls of the fixing cavity are open sides. The movable part is also rectangular in shape and is disposed inside the fixing cavity. The movable part is used to fix an optical element, which includes a prism. The light-incident surface and the light-exit surface of the prism correspond to the two open sides of the fixing cavity, respectively. The fixed cavity includes a fixed sidewall, and the fixed sidewall and the two opening sides are parallel to the first axis. The support member is disposed between the fixed sidewall and the movable part.

18. A lens module, characterized in that, It includes optical elements and the actuation module as described in any one of claims 1-17, wherein the optical elements are disposed on the movable part.

19. The lens module according to claim 18, characterized in that, The optical element includes at least one of a prism and a lens assembly.

20. The lens module according to claim 18, characterized in that, Lenses are provided on the light-incident side and / or the light-exit side of the prism.

21. An electronic device, characterized in that, include: The motherboard and the lens module according to any one of claims 18-20, wherein the lens module is disposed on the motherboard.

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