Voice coil motors, optical image stabilization assemblies, compact camera modules and electronic devices

Abstract

The present application provides a voice coil motor, an optical image stabilization assembly, a compact camera module, and an electronic device. The voice coil motor includes a fastening portion, a first movable portion, a second movable portion, a first actuating portion, and a second actuating portion. The first actuating portion and the second actuating portion are configured to drive the first movable portion and the second movable portion, respectively, to rotate in two mutually perpendicular directions relative to the fastening portion. The first movable portion and the second movable portion limit the degree of freedom of the first movable portion by fitting between the arc surface and the support groove, and / or the second movable portion and the fastening portion limit the degree of freedom of the second movable portion by fitting between two fulcrum elements and two grooves. The above solution reduces the degree of freedom of the voice coil motor in undesired directions of movement, thereby improving the image stabilization effect of the voice coil motor and thereby improving image quality.

Description

[Technical Field]

[0001] This application claims priority to Chinese Patent Application No. 202211541415.0, entitled "VOICE COIL MOTOR, OPTICAL IMAGE STABILIZATION ASSEMBLY, COMPACT CAMERA MODULE, AND ELECTRONIC DEVICE," filed with the State Intellectual Property Office of China on December 2, 2022, which is incorporated herein by reference in its entirety.

[0002] TECHNICAL FIELD Embodiments of the present application relate to the field of electronic device technology, and more particularly to voice coil motors, optical image stabilization assemblies, compact camera modules, and electronic devices. [Background technology]

[0003] With the continuous development of electronic device technology, image capture capability has become an important feature of electronic devices (e.g., mobile phones or tablet computers) and a key indicator for evaluating the performance of electronic devices. Optical zoom with a high zoom ratio has always been the development trend for image capture in electronic devices. However, due to the trend toward thinner and lighter electronic devices, the structure of conventional compact camera modules cannot meet the requirements for optical zoom with a high zoom ratio. Therefore, periscope compact camera modules have emerged.

[0004] Existing periscope compact camera modules typically have optical image stabilization (OIS) capabilities to improve image capture quality. During OIS, periscope compact camera modules typically use a voice coil motor to drive and rotate an optical folding element to perform vibration compensation.

[0005] However, in the conventional periscope compact camera module, due to limitations in the structural design of the voice coil motor, when the voice coil motor drives the optical bending element to perform vibration compensation, the voice coil motor may be interfered with by an undesired degree of freedom in the direction of movement, resulting in poor image stabilization effect and poor image stabilization performance. Summary of the Invention [Problem to be solved by the invention]

[0006] Embodiments of the present application provide a voice coil motor, an optical image stabilization assembly, a compact camera module, and an electronic device, which improve the image stabilization effect of the voice coil motor to improve image quality. [Means for solving the problem]

[0007] According to a first aspect, there is provided a voice coil motor, comprising: a fastening portion; a first movable portion configured to fasten to an optical element, the optical element configured to adjust light incident in a first direction to be transmitted in a second direction, the second direction being perpendicular to the first direction; a first actuating portion configured to drive the first movable portion to rotate about a third direction relative to the fastening portion, the third direction being perpendicular to the first direction and perpendicular to the second direction; a second movable portion connected to the first movable portion via a first elastic member, the second movable portion configured to support the first movable portion; and a second actuating portion configured to drive the second movable portion to rotate about the first direction relative to the fastening portion; the bearing table is disposed on the second movable part, the bearing table including a support groove; the first fulcrum element is disposed on the first movable part, the first fulcrum element including a first arcuate surface; the first movable part is supported on an inner wall of the support groove via the first arcuate surface; the first elastic member includes a first connecting portion, a second connecting portion, and a deformation portion located between the first connecting portion and the second connecting portion; the first connecting portion is fastened to the first fulcrum element, and the second connecting portion is fastened to the bearing table; when the first operating portion drives the first movable part, the first arcuate surface rotates within the support groove around a third direction to limit the deformation direction of the deformation portion.

[0008] In this embodiment of the present application, the first movable part is supported in the support groove of the second movable part via a first arcuate surface. When the first actuating part drives the first movable part, the first fulcrum element rotates within the support groove. In this way, when the first elastic member elastically deforms, the first elastic member deforms in a relatively fixed direction rather than deforming in any direction without constraint. This reduces or prevents the voice coil motor from moving or rotating in an undesired direction, thereby improving the image stabilization effect of the motor and improving image quality.

[0009] In a possible implementation, the centers of rotation and mass of the first movable part and the optical element in the connected state coincide.

[0010] In this way, the influence of the interference torque can be reduced and the anti-interference capability of the motor can be improved.

[0011] In a possible implementation, the support groove is a V-shaped groove or an arc-shaped groove.

[0012] The V-shaped groove or arc-shaped groove can increase the contact area between the first fulcrum element and the inner wall of the groove, reducing reliability risks.

[0013] In a possible implementation, there is a first preset distance in a first direction between a surface of the first fulcrum element fastened to the first connecting portion and a surface of the bearing table fastened to the second connecting portion, and the first preset distance is used by the first elastic member to apply a first preload to the first fulcrum element.

[0014] A first preload is applied to the first fulcrum element by the first elastic member, so that the first fulcrum element is always supported on the inner wall of the support groove, limiting movement of the optical element in the first direction. Applying the first preload also increases friction between the first arc surface and the inner wall of the support groove, limiting movement of the optical element in the second direction. The first preload also reduces the positional difference of the first movable part in different positions of the compact camera module, reducing the sensitivity difference in different positions and improving the image stabilization effect.

[0015] In a possible implementation form, a first through hole is provided on the first connecting part, a first positioning pin is arranged on a surface of the first fulcrum element fastened to the first connecting part, and a first elastic member is sleeve-connected onto the first positioning pin through the first through hole, a second through hole is provided on the second connecting part, and a second positioning pin is arranged on a surface of the bearing table fastened to the second connecting part, and the first elastic member is sleeve-connected to the second positioning pin through the second through hole.

[0016] The relative positional relationship between the first movable part and the second movable part may be determined by fitting the through hole into the positioning pin.

[0017] In a possible implementation, the table surface of the bearing table includes a first cutting surface, a second cutting surface, a third cutting surface, a fourth cutting surface, and a fifth cutting surface connected sequentially in a second direction, the first cutting surface and the fifth cutting surface being located on a first plane perpendicular to the first direction, the first cutting surface and the fifth cutting surface being used to fasten to the first connecting portion, the second cutting surface and the fourth cutting surface being located on a second plane perpendicular to the first direction, the second plane being lower than the first plane in the first direction, the distance between the second cutting surface and the first plane and the distance between the fourth cutting surface and the first plane being used to provide a deformation space for the deformation portion, and the third cutting surface being recessed in the second plane toward a side away from the first plane to form a support groove.

[0018] In this way, the first cut surface and the fifth cut surface can be produced in the same process, and the second cut surface and the fourth cut surface can be produced in the same step, thereby simplifying the manufacturing process of the second movable part.

[0019] In a possible implementation, the voice coil motor includes two first fulcrum elements, the first movable part includes a first side wall and a second side wall arranged opposite each other in a third direction, the second movable part includes a first support part and a second support part arranged opposite each other in the third direction, the first support part is located on a side of the first side wall away from the second side wall, the second support part is located on a side of the second side wall away from the first side wall, and one of the two first fulcrum elements is located on a side of the first side wall. , is arranged on the side facing the first support part, the bearing table is arranged on the side of the first support part facing the first side wall, the first fulcrum element on the first side wall is supported by the bearing table on the first support part, the other of the two first fulcrum elements is arranged on the side of the second side wall facing the second support part, the bearing table is arranged on the side of the second support part facing the second side wall, and the first fulcrum element on the second side wall is supported by the bearing table on the second support part.

[0020] In this way, the first movable part is supported on the second movable part via two first fulcrum elements in the second direction, thereby ensuring stability of the drive of the first movable part by the first operating part.

[0021] In a possible implementation, the first fulcrum element is a D-shaped shaft.

[0022] In a possible implementation, the first fulcrum element and the first mobile part are integrally formed.

[0023] In a possible implementation, one of the second movable part and the fastening part is a first component, the other of the second movable part and the fastening part is a second component, the second fulcrum element and the third fulcrum element arranged in a first direction are disposed on the first component, the second fulcrum element and the third fulcrum element are fastened to the second component, the second fulcrum element includes a second arc surface, the third fulcrum element includes a third arc surface, the second groove and the third groove arranged in the first direction are provided on the second component, The second groove is used to accommodate at least a portion of the second fulcrum element, and the inner wall of the second groove contacts the second arcuate surface; the third groove is used to accommodate at least a portion of the third fulcrum element, and the inner wall of the third groove contacts the third arcuate surface; when the second operating part drives the second movable part to rotate around the first direction, the second arcuate surface is supported by the inner wall of the second groove, and the third arcuate surface is supported by the inner wall of the third groove to limit the rotation of the second movable part around the second direction.

[0024] The second movable part has two fulcrums in the first direction, and the second groove and the third groove can restrict the second fulcrum element and the third fulcrum element in the third direction, thereby improving the stability of the rotation of the motor around the first direction and reducing or avoiding rotation of the optical element around the second direction, thereby reducing the degree of freedom of the voice coil motor in undesirable movement directions.

[0025] In a possible implementation, the connecting line between the center of rotation of the second arc surface and the center of rotation of the third arc surface is parallel to the first direction.

[0026] In a possible implementation, the second fulcrum element and the third fulcrum element are balls, or the second fulcrum element and the third fulcrum element are protrusions of the first component extending towards the second component.

[0027] In a possible implementation, the second groove is a tapered groove or a V-shaped groove, and / or the third groove is a tapered groove or a V-shaped groove.

[0028] When the second groove and / or the third groove are tapered grooves, the relative positional relationship between the second movable part and the fastening part can be limited, and movement of the optical element in the first direction and movement of the optical element in the third direction can be reduced or avoided, thereby reducing the degree of freedom of the optical element in undesirable movement directions.

[0029] When the second groove and / or the third groove are V-shaped grooves, two sides of the V-shaped groove may contact the fulcrum element, and the second movable part may be prevented from rotating in the second direction when the second movable part rotates in the first direction. In addition, the V-shaped groove can absorb installation errors and reduce assembly difficulties.

[0030] In a possible implementation, when the second groove and / or the third groove is a V-shaped groove, the extension direction of the V-shaped groove is parallel to the first direction.

[0031] In a possible implementation, when the second groove and / or the third groove are tapered grooves, the tapered grooves are used to limit the movement of the second movable component in the first direction.

[0032] In a possible embodiment, the voice coil motor further includes a second elastic member, the second elastic member including a third connecting portion, a fourth connecting portion, and a cantilever located between the third connecting portion and the fourth connecting portion, the third connecting portion being fastened to the fastening portion, and the fourth connecting portion being fastened to the second movable portion.

[0033] The fastening portion may be connected to the second movable portion via a second elastic member, whereby the second movable portion may be allowed to rotate relative to the fastening portion.

[0034] In a possible implementation, there is a second preset distance in the second direction between a surface of the fastening part fastened to the third connecting part and a surface of the second movable part fastened to the fourth connecting part, and the second preset distance is used by the second elastic member to apply a second preload to the second fulcrum element and the third fulcrum element.

[0035] The second preset distance is set so that the second elastic member can apply a preload to the second fulcrum element and the third fulcrum element to maintain the stability of the movable connection between the second movable part and the fastening part.

[0036] In a possible implementation, the voice coil motor includes two second elastic elements, the second movable part has a first support part and a second support part arranged opposite each other in a third direction, and a third support part configured to connect the first support part and the second support part, the third support part being perpendicular to the second direction, and the fastening part includes a fourth side wall and a fifth side wall arranged opposite each other in the third direction, and a third side wall configured to connect the fourth side wall and the fifth side wall, the third side wall being perpendicular to the second direction. The fourth side wall is located on a side of the second support portion away from the first support portion, the fifth side wall is located on a side of the first support portion away from the second support portion, an end surface of the fourth side wall away from the third side wall in the second direction is connected to an end surface of the second support portion away from the third support portion in the second direction via one of the two second elastic elements, and an end surface of the fifth side wall away from the third side wall in the second direction is connected to an end surface of the first support portion away from the third support portion in the second direction via the other of the two second elastic elements.

[0037] In this way, by connecting the second movable part to the fastening part via two second elastic elements in the third direction, the stability of the driving of the second movable part by the second actuating part can be ensured.

[0038] In a possible implementation, a first groove located between the second groove and the third groove is provided on the second component, the first groove is used to accommodate a magnetic element, a magnetic conductive member located between the second fulcrum element and the third fulcrum element is disposed on the first component, and the magnetic force between the magnetic conductive member and the magnetic element is used to apply a third preload to the second fulcrum element and the third fulcrum element.

[0039] By adopting a magnetic attraction method and using the second elastic member to apply preload to the second fulcrum element and the third fulcrum element, the preload state between the fastening part and the second movable part can be adjusted.

[0040] According to a second aspect, there is provided a voice coil motor, the voice coil motor including: a fastening portion; a movable portion configured to be fastened to an optical element, the optical element configured to condition light incident in a first direction to be transmitted in a second direction, the second direction being perpendicular to the first direction; and an actuation portion configured to drive the movable portion to rotate about the first direction relative to the fastening portion; One of the movable part and the fastening part is a first component, and the other of the movable part and the fastening part is a second component, the second fulcrum element and the third fulcrum element arranged in a first direction are disposed on the first component, the second fulcrum element and the third fulcrum element are fastened to the second component, the second fulcrum element includes a second arc surface, the third fulcrum element includes a third arc surface, the second groove and the third groove arranged in the first direction are provided on the second component, and the second The groove is used to accommodate at least a portion of the second fulcrum element, the inner wall of the second groove contacts the second arcuate surface, and the third groove is used to accommodate at least a portion of the third fulcrum element, the inner wall of the third groove contacts the third arcuate surface, and when the actuating part drives the movable part to rotate around the first direction, the second arcuate surface is supported by the inner wall of the second groove and the third arcuate surface is supported by the inner wall of the third groove to limit rotation of the movable part around the second direction.

[0041] In this embodiment of the present application, the second movable part has two fulcrums in the first direction, and the second groove and the third groove can restrict the second fulcrum element and the third fulcrum element in the third direction, so as to improve the stability of the rotation of the motor around the first direction and reduce or avoid the rotation of the optical element around the second direction, thereby reducing the degree of freedom of the voice coil motor in undesirable movement directions, improving the image stabilization effect of the motor, and improving image quality.

[0042] In a possible implementation, the connecting line between the center of rotation of the second arc surface and the center of rotation of the third arc surface is parallel to the first direction.

[0043] In a possible implementation, the second fulcrum element and the third fulcrum element are balls, or the second fulcrum element and the third fulcrum element are protrusions of the first component extending towards the second component.

[0044] In a possible implementation, the second groove is a tapered groove or a V-shaped groove, and / or the third groove is a tapered groove or a V-shaped groove.

[0045] In a possible implementation, when the second groove and / or the third groove is a V-shaped groove, the extension direction of the V-shaped groove is parallel to the first direction.

[0046] In a possible implementation, when the second groove and / or the third groove are tapered grooves, the tapered grooves are used to limit the movement of the movable component in the first direction.

[0047] In a possible embodiment, the voice coil motor further includes an elastic member, the elastic member including a third connection portion, a fourth connection portion, and a cantilever located between the third connection portion and the fourth connection portion, the third connection portion being fastened to the fastening portion, and the fourth connection portion being fastened to the movable portion.

[0048] In a possible implementation, there is a second preset distance in a second direction between a surface of the fastening part fastened to the third connecting part and a surface of the movable part fastened to the fourth connecting part, and the second preset distance is used by the elastic member to apply a second preload to the second fulcrum element and the third fulcrum element.

[0049] In a possible implementation, the voice coil motor includes two elastic elements, the movable portion has a first support portion and a second support portion arranged opposite each other in a third direction, and a third support portion configured to connect the first support portion and the second support portion, the third support portion being perpendicular to the second direction, the third direction being perpendicular to the first direction and perpendicular to the second direction, and the fastening portion includes a fourth side wall and a fifth side wall arranged opposite each other in the third direction, and a third side wall configured to connect the fourth side wall and the fifth side wall. The third side wall is perpendicular to the second direction, the fourth side wall is located on a side of the second support portion away from the first support portion, the fifth side wall is located on a side of the first support portion away from the second support portion, an end surface of the fourth side wall away from the third side wall in the second direction is connected to an end surface of the second support portion away from the third support portion in the second direction via one of two elastic elements, and an end surface of the fifth side wall away from the third side wall in the second direction is connected to an end surface of the first support portion away from the third support portion in the second direction via the other of the two elastic elements.

[0050] In a possible implementation, a first groove located between the second groove and the third groove is provided on the second component, the first groove is used to accommodate a magnetic element, a magnetic conductive member located between the second fulcrum element and the third fulcrum element is disposed on the first component, and the magnetic force between the magnetic conductive member and the magnetic element is used to apply a third preload to the second fulcrum element and the third fulcrum element.

[0051] According to a third aspect, there is provided an optical image stabilization assembly including an optical element and a voice coil motor according to any one of the possible implementations of the first or second aspects, wherein the optical element is fastened to the voice coil motor, the optical element configured to adjust light incident in a first direction to be transmitted in a second direction, and the voice coil motor configured to drive and rotate the optical element.

[0052] According to a fourth aspect, there is provided a compact camera module including a lens group, an image sensor, and the optical image stabilization assembly of the third aspect, wherein the lens group is configured to process light incident from the optical element and then project the processed light onto the image sensor.

[0053] According to a fifth aspect, there is provided an electronic device including a gyroscope, a processing unit, and the compact camera module of the fourth aspect. The gyroscope is configured to collect vibration information of the electronic device and transmit the vibration information to the processing unit. The processing unit is configured to control a voice coil motor to drive an optical element based on the vibration information to perform vibration compensation.

[0054] For the beneficial effects of the devices in the second to fifth aspects, please refer to the first aspect, and for the sake of brevity, the details will not be described again. [Brief explanation of the drawings]

[0055] [Figure 1] 1 is a diagram of a structure of an electronic device according to an embodiment of the present application; [Figure 2] 1 is a structural schematic diagram of a compact camera module according to an embodiment of the present application; [Figure 3] FIG. 1 is a diagram of optical image stabilization for a periscope compact camera module. [Figure 4] FIG. 1 is an assembly view of an optical image stabilization assembly according to an embodiment of the present application. [Figure 5] FIG. 1 is an exploded view of an optical image stabilization assembly according to an embodiment of the present application. [Figure 6] FIG. 1 is an exploded view of an optical image stabilization assembly according to an embodiment of the present application. [Figure 7] 1 is a diagram of a structure of a first movable part according to an embodiment of the present application; [Figure 8] FIG. 2 is a diagram of a structure of a second movable part according to an embodiment of the present application; [Figure 9]1 is a diagram of a structure of a first elastic member according to an embodiment of the present application; [Figure 10] FIG. 2 is an assembly view of a first elastic member and a first movable part according to an embodiment of the present application. [Figure 11] 1 is a schematic cross-sectional view of an assembled state of a first elastic member, a first movable part and a second movable part according to an embodiment of the present application; [Figure 12] 1 is a schematic cross-sectional view of an assembled state of a first elastic member, a first movable part and a second movable part according to an embodiment of the present application; [Figure 13] 1 is a diagram of a structure of a fastening portion according to an embodiment of the present application; [Figure 14] FIG. 2 is a diagram of a structure of a second movable part according to an embodiment of the present application; [Figure 15] 10 is a schematic cross-sectional view illustrating an assembled state of a second movable part and a fastening part according to an embodiment of the present application; FIG. [Figure 16] 1 is a schematic cross-sectional view of an assembled state of a second movable part and a fastening part according to an embodiment of the present application; [Figure 17] 10A and 10B are diagrams of the structure of a second elastic member according to an embodiment of the present application; [Figure 18] FIG. 2 is a partial enlarged view of an assembled state of a second movable part and a fastening part according to an embodiment of the present application. [Figure 19] FIG. 1 is an assembly view of an optical image stabilization assembly according to an embodiment of the present application. [Figure 20] 1 is a diagram of the control principle of an electronic device according to an embodiment of the present application; DETAILED DESCRIPTION OF THE INVENTION

[0056] The following describes the technical solutions in the embodiments of the present application with reference to the accompanying drawings.

[0057] In the description of the embodiments of the present application, please note that " / " means "or" unless otherwise specified. For example, A / B can indicate A or B. In this specification, "and / or" only describes a relational relationship for describing related objects and indicates that three relations may exist. For example, A and / or B can indicate the following three cases: when only A exists, when both A and B exist, and when only B exists.

[0058] The terms "first" and "second" in the embodiments of the present application are intended for descriptive purposes only and should not be understood as indicating or implying the relative importance or implicit indication of the quantity of the indicated technical features. Thus, a feature qualified by "first" or "second" may explicitly or implicitly include one or more features. Additionally, in the description of the embodiments of the present application, "plurality" means two or more, and "at least one" and "one or more" mean one, two, or more. The singular forms "one," "a," "the," "the preceding," "this," and "the one" are intended to include forms such as "one or more," unless the context clearly indicates otherwise.

[0059] References to "one embodiment," "some embodiments," etc. described herein indicate that one or more embodiments of the present application include the particular feature, structure, or characteristic described with reference to the embodiment. Thus, statements such as "in one embodiment," "in some embodiments," "in some other embodiments," and "in other embodiments" appearing in different places herein are not necessarily meant to refer to the same embodiment. Instead, these statements mean "one or more, but not all, of the embodiments," unless specifically emphasized otherwise. The terms "include," "comprise," "have," and variations thereof all mean "including, but not limited to," unless specifically emphasized otherwise.

[0060] In describing the embodiments of the present application, orientations or positional relationships indicated by terms such as "up," "down," "left," "right," "inside," "outside," "vertical," and "horizontal" are defined relative to the orientation or location of components generally disposed in the accompanying drawings. It should be understood that these directional terms are relative concepts and are used for relative description and clarity, rather than indicating or implying that the depicted devices or elements must have a particular orientation or be constructed and operated in a particular orientation. These directional terms may change appropriately based on changes in the orientation of components in the accompanying drawings and therefore cannot be construed as limitations on the present application. Furthermore, in this application, "vertical" does not mean strictly perpendicular, but means within a tolerance. Parallel means not strictly parallel, but within a tolerance.

[0061] In the embodiments of the present application, the same reference numerals indicate the same components or parts. For the same parts in the embodiments of the present application, only one part or component may be used as an example to mark the reference numeral in the figures. It should be understood that the reference numerals may also be applicable to other same parts or components. In addition, the parts in the accompanying drawings are not drawn to scale. The dimensions and sizes of the parts shown in the drawings are merely examples. This should not be interpreted as a limitation on the present application.

[0062] For ease of understanding, the following first explains and describes technical terms in this application.

[0063] The optical axis is an imaginary line in an optical system and may be understood as the direction in which light propagates through the optical system. In a symmetric transmission system, the optical axis generally coincides with the center line of rotation of the optical system. When light coincides with the optical axis, the light is transmitted within the optical system along the optical axis.

[0064] Optical image stabilization (OIS) is a technology that positions optical components in imaging devices, such as mobile phones or cameras, to avoid or reduce device vibrations that occur in the process of capturing optical signals, thereby improving imaging quality. A common method is to perform vibration detection by using a gyroscope, and then use an OIS motor to pan or rotate the optical components in the opposite direction to correct image blur caused by the vibration of the imaging device during exposure.

[0065] Tilt refers to the relative tilt angle between the lens carrier center and a reference vertical line.

[0066] A voice coil motor (VCM) is a device that converts electrical energy into mechanical energy. It generates motion by using the magnetic field of a permanent magnet and the magnetic field generated by a current-carrying coil conductor to generate linear motion and motion with a limited swing angle. The operating principle is as follows: When a current-carrying conductor passes through a magnetic field, a force perpendicular to the magnetic field lines is generated. The magnitude of the force depends on the length of the conductor passing through the field, as well as the strength of the magnetic field and current.

[0067] Focal length refers to the vertical distance from the optical center of a lens or lens group to the focal point (or focal plane) at which a clear image of an infinitely distant scene is formed through the lens or lens group. A prime lens has a fixed focal length because the position of its optical center is fixed. In the case of a zoom lens, the focal length of the lens changes as the optical center of the lens changes, so the focal length can be adjusted.

[0068] Based on the zoom focal length range, lenses can be classified as ultra-wide-angle lenses (focal length less than 21mm), wide-angle lenses (focal length ranging from 21mm to 35mm), standard lenses (focal length ranging from 35mm to 70mm), medium-long focal length lenses (focal length ranging from 70mm to 135mm), long focal length lenses (focal length ranging from 135mm to 500mm+), etc.

[0069] A zoom lens has two focal lengths. The smaller number indicates the wide-angle end (which provides the largest angle of view), and the larger number indicates the telephoto end (which provides the largest focal length). When taking a photograph, any focal length within these two focal lengths can be used. The wider the wide-angle end of the lens' focal length (i.e., the smaller the number), the wider the scene you can capture, and the longer the telephoto end (i.e., the larger the number), the farther away the scene you can capture. The telephoto end number divided by the wide-angle end number is the zoom ratio.

[0070] Optical zoom refers to the zooming implemented by the structure of an optical lens, which is generated by changing the positions of the lens, the object, and the focal point. Specifically, the positions of the above three elements are changed by changing the relative positions of the lens elements within the lens, which can change the focal length of the lens, thereby zooming in or out on the scene that needs to be photographed. This image is enlarged using physical principles. In the zoom-in process, the photosensitive element directly senses the light from the photographed object and forms an image without any other electronic magnification process. In addition, in this process, the photosensitive element can perform full-frame imaging and maintain the original maximum resolution.

[0071] FIG. 1 is a diagram of the structure of an electronic device according to one embodiment of the present application.

[0072] The electronic device 100 in this embodiment of the present application is an electronic device with imaging capabilities (e.g., video / photography), such as a mobile phone, a personal digital assistant (PDA) computer, a tablet computer, a laptop, a laptop computer, a video camera, a video recorder, a camera, a smart watch, a smart wristband, an in-car computer, or a television (or smart screen).

[0073] The specific form of the electronic device 100 is not particularly limited in the embodiments of the present application. For ease of explanation and understanding, the following uses an example in which the electronic device 100 is a mobile phone. For example, (a) and (b) of Figure 1 schematically show the front and back of the electronic device 100, respectively.

[0074] As shown in FIG. 1, the electronic device 100 may include a housing 101, a display panel (DP) 102, and a camera compact module (CCM) 103.

[0075] The housing 101 forms an accommodation space for accommodating the components of the electronic device 100. The housing 101 can further protect the electronic device 100 and support the entire device. The display 102 and the compact camera module 103 are disposed within the accommodation space of the housing 101 and connected to the housing 101. In some embodiments, the housing 101 may include a rear cover disposed opposite the display 102 and a middle frame disposed inside the electronic device 100. The display 102 and the compact camera module 103 may be fastened to the middle frame. The material of the housing 101 may be metal, plastic, ceramic, or glass.

[0076] The display 102 is configured to display an image, for example, an image captured by the compact camera module 103. The display 102 may be a liquid crystal display (LCD), an organic light emitting diode (OLED) display, or the like. The OLED display may be a flexible display or a rigid display. The display 102 may be a regular screen, or a specially shaped screen, a bendable screen, or the like. The display 102 may be disposed on the front and / or back of the electronic device 100. In this specification, the front of the electronic device 100 may be understood as the side facing a user when the user uses the electronic device 100, and the back of the electronic device 100 may be understood as the side facing away from the user when the user uses the electronic device 100.

[0077] The compact camera module 103 is configured to capture still images or videos. The compact camera module 103 can be located on the front and / or back of the electronic device 100. When the compact camera module 103 is located on the front of the electronic device 100, the compact camera module 103 may be configured to capture a scene in front of the electronic device 100, for example, to take a selfie, and in some embodiments, may be referred to as a front camera. When the compact camera module 103 is located on the back of the electronic device 100, the compact camera module 103 may be configured to capture a scene behind the electronic device 100, and in some embodiments, may be referred to as a back camera. During image capture, a user can select a corresponding compact camera module based on image capture requirements.

[0078] It can be understood that the mounting location of the compact camera module 103 in FIG. 1 is merely an example.

[0079] In some embodiments, when the compact camera module 103 is used as a front camera, the compact camera module 103 may be attached to the front of the electronic device 100 at a position other than the position of the display 102, for example, to the left of the earpiece, at the top center of the electronic device 100, at the bottom (also referred to as the chin) of the electronic device 100, or at one of the four corners of the electronic device 100. The compact camera module 103 may alternatively be located in a hollow area above the display 102. When the compact camera module 103 is used as a rear camera, the compact camera module 103 may be attached to any position on the back of the electronic device 100, for example, at the top left corner, the top right corner, or the top center.

[0080] In some other embodiments, the compact camera module 103 may alternatively not be located on the body of the electronic device 100, but may be located on an edge that protrudes relative to the body of the electronic device 100, or on a component that is movable or rotatable relative to the electronic device 100. The component may be extended or rotated on the body of the electronic device 100, such that the compact camera module 103 can be hidden inside the electronic device 100 or at least partially protrude from the electronic device 100. When the compact camera module 103 can be rotated relative to the electronic device 100, the compact camera module 103 corresponds to a front camera and a rear camera. Specifically, by rotating the same compact camera module 103, both a view in front of the electronic device 100 and a view in back of the electronic device 100 can be captured.

[0081] In some other embodiments, if the display 101 is foldable, the compact camera module 103 can be used as a front or rear camera when the display 102 is folded.

[0082] The number of compact camera modules 103 to be arranged is not limited in the embodiments of the present application and may be one, two, four, or more. For example, one or more compact camera modules 103 may be arranged on the front surface of the electronic device 100, and / or one or more compact camera modules 103 may be arranged on the back surface of the electronic device 100. When multiple compact camera modules 103 are arranged, the multiple compact camera modules 103 may be completely identical or different, for example, the optical parameters of the lenses of the multiple compact camera modules 103 may be different, the lens arrangement positions may be different, or the lens shapes may be different. The relative positions at which the multiple compact camera modules are arranged are also not limited in the embodiments of the present application.

[0083] Optionally, in some embodiments, electronic device 100 may further include a protective lens element 104 configured to protect compact camera module 103. Protective lens element 104 is disposed on housing 101 and covers compact camera module 103.

[0084] In some embodiments, when protective lens element 104 is configured to protect the front-facing camera, protective lens element 104 can cover only the front-facing compact camera module or can cover the entire front surface of electronic device 100. When protective lens element 104 covers the entire front surface of electronic device 100, protective lens element 104 may be configured to protect both the front-facing compact camera module and display 102, and protective lens element 104 is a cover glass (CG).

[0085] In some embodiments, when protective lens element 104 is configured to protect a rear camera, protective lens element 104 may cover the entire rear surface of electronic device 100 or may be positioned only in a location corresponding to the rear compact camera module.

[0086] The material of the protective lens element 104 may be glass, sapphire, ceramic, etc. This is not particularly limited in the embodiments of the present application. In some embodiments, the protective lens element 104 is transparent, and light outside the electronic device 100 can pass through the protective lens element 104 and enter the compact camera module 103.

[0087] 1 does not constitute a particular limitation on electronic device 100, and it should be understood that electronic device 100 may include more or fewer components than those shown in the figure, for example, electronic device 100 may further include one or more of the following components: a battery, a flash, a fingerprint recognition module, an earpiece, a button, or a sensor. A component layout different from that shown in the figure may alternatively be arranged within electronic device 100.

[0088] With the continuous development of electronic device technology, image capture capability has become an important feature of electronic devices (e.g., mobile phones or tablet computers) and a key indicator for evaluating the performance of electronic devices. To meet various user requirements, for example, to implement a camera-like image capture experience or to adapt to image capture in different scenes, lenses on electronic devices (i.e., compact camera modules) can implement zoom so that both close and distant images can be captured clearly.

[0089] Generally, zoom lenses are easy to implement short focal length adjustment. However, for long focal length adjustment, due to the thickness limitations of electronic devices, the achievable zoom ratio is small (e.g., a long focal length of 3X), and the object zoom-in effect, background blur effect, etc. are not obvious. Due to the requirements for longer focal lengths and lightness and thinness of electronic devices, a prism periscope structure is usually added. The periscope structure is similar to a periscope and can bend the optical path to implement a long focal length.

[0090] In this embodiment of the present application, the compact camera module 103 shown in FIG. 1 is a periscope compact camera module. Specifically, the lens groups in the compact camera module 103 are arranged horizontally, and light entering the compact camera module 103 can reach the image sensor through elements such as reflectors, lenses, and prisms, and the optical path is folded. In this manner, the focal length can be adjusted by floating the lens groups within the electronic device to implement optical zoom without requiring the lens groups to protrude from the body of the electronic device. It should be understood that the "horizontal" direction in this specification refers to a direction perpendicular to the thickness direction of the electronic device 100. In some embodiments, the periscope compact camera module may also be referred to as a folding compact camera module.

[0091] 2 is a diagram of a compact camera module structure according to an embodiment of the present application. The compact camera module 200 of FIG. 2 may be an exemplary structure of the compact camera module 103 of FIG. 1, where the compact camera module 200 is a periscope compact camera module.

[0092] 2, the compact camera module 200 includes an optical element 21, a lens group 22, and an image sensor 23, which are sequentially arranged in the transmission direction of an imaging light beam 201. Here, the imaging light beam 201 is a light ray including light incident on the compact camera module 200.

[0093] For ease of explanation, the optical axis direction of the compact camera module 200 (specifically, the lens group 22) will be defined as direction Z (e.g., the horizontal direction of the paper shown in FIG. 2, which may also be referred to as the Z-axis direction). A direction perpendicular to the optical axis and parallel to the direction in which the imaging light beam 201 is incident on the optical element 21 will be defined as direction X (e.g., the direction perpendicular to the paper shown in FIG. 2, which may also be referred to as the X-axis direction). A direction perpendicular to the optical axis direction and the first direction will be defined as direction Y (e.g., the direction perpendicular to the paper shown in FIG. 2, which may also be referred to as the Y-axis direction). More specifically, the direction toward the object side along the X axis will be defined as the positive X-axis direction, the direction away from the object side along the X axis will be defined as the negative X-axis direction, the direction toward the image side along the Z axis will be defined as the positive Z-axis direction, the direction away from the image side along the Z axis will be defined as the negative Z-axis direction, the positive Y-axis direction will be defined as the direction rotated clockwise from the positive Z-axis direction, and the negative Y-axis direction will be defined as the direction rotated counterclockwise from the positive Z-axis direction. The definitions of the directions X, Y, and Z are the same in the drawings described below. It should be noted that the definitions of the directions X, Y, and Z are intended merely to facilitate the description of the positional and connection relationships between components in the embodiments of the present application, and should not be construed as limitations on the embodiments of the present application.

[0094] In some embodiments, for ease of explanation, direction X may be referred to as the first direction, direction Z may be referred to as the second direction, and direction Y may be referred to as the third direction.

[0095] The optical element 21 bends the optical path of the received imaging light beam 201 and transmits the imaging light beam 201 to the lens group 22, adjusting the light incident from a first direction to be transmitted in a second direction. Bending the optical path is also called turning the optical path and refers to changing the transmission path of light. For example, the optical element 21 may be a reflective element such as a prism (e.g., a rectangular prism or a triangular prism) or a reflector. In some embodiments, the optical element 21 may also be referred to as an optical bending element.

[0096] The lens group 22 is configured to transmit the received imaging light beam 201 to the image sensor 23 and image the scene on the object side onto an imaging plane on the image side. Here, the object side is the side where the object to be photographed is located, and the image side is the side where the image of the object to be photographed is located. The lens group 22 may further perform certain processing on the received imaging light beam 201, such as aberration correction and achromatization. The lens group 22 may include at least one lens (also referred to as a lens element), and the at least one lens may be different or the same. The number and lens material of the lenses included in the lens group 22 are not particularly limited in the embodiments of the present application. Those skilled in the art may correspondingly set the number of lenses based on actual requirements, or may set a combination method of solid lenses (lens parameters are fixed) and / or liquid lenses (lens parameters may be dynamically adjusted). No further description is provided here.

[0097] The lens group 22 may further include a lens barrel configured to accommodate at least one lens. To implement zooming, the lens barrel may be entire, and at least one lens is accommodated in the entire lens barrel. However, the relative positions between the lenses may also be adjusted through other structures. Alternatively, the lens barrel may include multiple lens barrel sections, and at least one lens may be grouped and arranged in the multiple lens barrel sections, and the relative positions between the multiple lens barrel sections may be adjusted to implement adjustment of the relative positions between the lenses.

[0098] The image sensor 23 is disposed behind the lens group 22 and mainly performs imaging. Specifically, the image sensor 23 has an image capture area (also referred to as a photosensitive area or photosensitive surface), and captures the imaging light beam 201 received in the image capture area. The image sensor 23 is a device having a photoelectric conversion function, and can convert the optical signal of the imaging light beam 201 captured in the image capture area into an electrical signal in a corresponding proportional relationship with the optical signal. The image sensor may be a CCD image sensor including a charged coupled device (CCD), or a CMOS image sensor including a complementary metal oxide semiconductor (CMOS).

[0099] 2, it can be seen that the optical element 21, the lens group 22, and the image sensor 23 are sequentially arranged in the optical axis direction. The imaging principle of the compact camera module 200 is as follows: Light entering the compact camera module from the object side is bent through the optical element 21, and the bent light beam is projected onto the image sensor 23 through the lens group 22 to implement imaging of the object.

[0100] In some embodiments, the compact camera module 200 may further include an optical filter (e.g., an infrared cut filter (IRCF) or an optical filter that removes light in another optical waveband). The optical filter is disposed between the lens group 22 and the image sensor 23. For example, if the optical filter is an IRCF, it can remove unwanted light projected onto the image sensor 23 to prevent problems such as ghosting, stray light, and color cast from occurring during imaging by the image sensor 23.

[0101] In some embodiments, optical element 21 may be made of a material having near-infrared wavelength band absorption properties, such as blue glass or a resin-type absorbing material, or a colorless glass coated with an absorbing material film, to implement the near-infrared cutting capability of compact camera module 200. Alternatively, the material of optical element 21 may be white glass, so that at least one surface through which imaging light beam 201 transmits may be covered with a near-infrared cutting coating to implement the near-infrared cutting capability of compact camera module 200.

[0102] The compact camera module 200 may further include a housing configured to house the entire compact camera module, connectors, circuit boards, peripheral electronic components, etc., which will not be described in detail here.

[0103] In order to reduce image blur caused by vibration during the image capture process and improve image quality, periscope compact camera modules generally have an optical image stabilization function. In periscope compact camera modules, a voice coil motor is usually used to drive and rotate the optical element 21 to perform vibration compensation.

[0104] FIG. 3 is a diagram of optical image stabilization for a periscope compact camera module.

[0105] As shown in FIG. 3 , the optical element 21 is fastened to a voice coil motor 24. The voice coil motor 24 drives the optical element 21 to rotate about the Y-axis, thereby enabling image stabilization correction for vibrations in the X-axis direction. The voice coil motor 24 also drives the optical element 21 to rotate about the X-axis direction, thereby enabling image stabilization correction for vibrations in the Y-axis direction. In other words, the voice coil motor 24 can implement two-degree-of-freedom rotation of the optical element 21, i.e., the voice coil motor 24 can control the optical element 21 to rotate about the X-axis and the Y-axis. In this embodiment of the present application, the movement of the optical element 21 driven by the voice coil motor 24 can also be referred to as a two-degree-of-freedom tilt-shift rotation movement. Correspondingly, the voice coil motor 24 may also be referred to as a two-axis rotation voice coil motor.

[0106] In general, the electronic device can be moved by vibration with six degrees of freedom, including three translational degrees of freedom and three rotational degrees of freedom. Specifically, the three translational degrees of freedom include movement along the X-axis, the Y-axis, and the Z-axis. The three rotational degrees of freedom include rotation around the X-axis, the Y-axis, and the Z-axis. The rotation of the optical element 21 around the X-axis and the rotation of the optical element 21 around the Y-axis can be understood as degrees of freedom in the required direction of movement.

[0107] In conventional periscope compact camera modules, due to limitations in the structural design of the voice coil motor, when the voice coil motor drives the optical element to rotate around the X-axis and Y-axis for vibration compensation, the optical element has an additional degree of freedom in at least one of undesired directions of movement, such as movement along the X-axis, Y-axis, Z-axis, and rotation around the Z-axis. In this case, the vibration compensation process of the voice coil motor may be interfered with by the degree of freedom in the undesired direction of movement. As a result, the image stabilization effect of the voice coil motor is low, the image stabilization performance is affected, and the image capture effect is insufficient.

[0108] Therefore, embodiments of the present application provide a voice coil motor and optical image stabilization assembly, which improves the interference resistance performance of the voice coil motor by limiting the degrees of freedom of the optical elements in undesired motion directions, thereby improving the optical image stabilization effect and improving image quality.

[0109] 4-6 are diagrams of the structure of an optical image stabilization assembly according to an embodiment of the present application. Fig. 4 is an assembled view of the optical image stabilization assembly. Figs. 5 and 6 are exploded views of the optical image stabilization assembly.

[0110] As shown in FIGS. 4 and 5 , the optical image stabilization assembly 300 includes a housing 3, an optical element 4, and a voice coil motor 5. The optical element 4 is fastened to the voice coil motor 5, and the voice coil motor 5 is configured to drive the optical element 4 to rotate along the X-axis direction and along the Y-axis direction, thereby separately performing image stabilization correction for vibrations in the Y direction and the X direction. The housing 3 forms an accommodation space and is configured to accommodate the optical element 4 and the voice coil motor 5. To avoid obstructing optical transmission, areas on the housing 3 corresponding to the entrance and exit surfaces of the optical element 4 are hollowed out or provided with holes, so that the optical element 4 can receive the imaging light beam, and after the optical path of the imaging light beam is bent, the imaging light beam is transmitted to the lens group.

[0111] In this embodiment of the present application, optical element 4 may be the exemplary structure of optical element 21 in Figure 2, and voice coil motor 5 may be the exemplary structure of voice coil motor 24 in Figure 2. An entrance surface of an optical element in this specification is understood to be the surface at which the optical element receives the imaging light beam, and an exit surface of an optical element is understood to be the surface at which the imaging light beam passes through the optical element or the surface at which the optical element exits the imaging light beam.

[0112] In some embodiments, the optical element 4 may be a rectangular prism. For example, as shown in FIG. 6 , the optical element 4 may have a first rectangular surface 41, a second rectangular surface 42, and an inclined surface 43. The first rectangular surface 41, the second rectangular surface 42, and the inclined surface 43 are connected in order in the rotational direction around the Y axis. More specifically, the first rectangular surface 41 is parallel to the YZ plane, the second rectangular surface 42 is parallel to the XY plane, the first rectangular surface 41 is perpendicular to the second rectangular surface 42, and the inclined surface 43 is connected to the first rectangular surface 41 and the second rectangular surface 42. Here, the first rectangular surface 41 is the entrance surface of the optical element 4, and the second rectangular surface 42 is the exit surface of the optical element 4. The optical element 4 is located on the optical path of the incident light, and the inclined surface 43 may reflect the incident light by 90°. 2 are arranged in this order on the optical path of the reflected incident light. The optical element 4 also has a first connecting surface 44 and a second connecting surface 45 that are arranged opposite each other in the Y-axis direction. The first connecting surface 44 and the second connecting surface 45 are both adjacent to the first rectangular surface 41, the second rectangular surface 42, and the inclined surface 43.

[0113] As shown in FIG. 6 , the voice coil motor 5 may include a first movable part 51, a first actuating part 52, a second movable part 53, a second actuating part 54, a first elastic member 55, and a fastening part 57. The first movable part 51 is configured to be fastened to the optical element 4, and the optical element 4 is configured to adjust light incident in the X-axis direction to be transmitted in the Z-axis direction. The first actuating part 52 is configured to drive the first movable part 51 to rotate about the Y-axis direction relative to the fastening part 57. The second movable part 53 is connected to the first movable part 51 via the first elastic member 55, and the second movable part 53 is configured to support the first movable part 51. The second actuating part 54 is configured to drive the second movable part 53 to rotate about the X-axis direction relative to the fastening part 57.

[0114] In some embodiments, the voice coil motor 5 further includes a second elastic member 56 configured to connect the second movable part 53 and the fastening part 57 .

[0115] In some embodiments, the voice coil motor 5 further includes a circuit board 58 configured to provide a current signal to the voice coil motor 5 .

[0116] The components and the connections thereof will be described in detail below with reference to the accompanying drawings.

[0117] The first movable part 51 is configured to be fastened to the optical element 4 and to support the optical element 4. By way of example and not limitation, the first movable part 51 may include a connecting surface that matches the inclination of the inclined surface 43 of the optical element 4, and the optical element 4 may be fastened to the first movable part 51 by adhesion between the inclined surface 43 and the connecting surface.

[0118] The second movable part 53 is substantially U-shaped and is disposed around the first movable part 51 in the rotational direction about the X-axis. The first movable part 51 is connected to the second movable part 53 via a first elastic member 55. In this embodiment of the present application, the first elastic member 55 is flexible and can be elastically deformed. Therefore, the first movable part 51 is equivalent to being suspended within the accommodation space of the second movable part 53. The second movable part 53 is configured to support the first movable part 51 and the optical element 4, and the second movable part 53 corresponds to a support member for the first movable part 51 and the optical element 4.

[0119] The second movable part 53 is movably connected to the fastening part 57. For example, as shown in FIG. 6 , the second movable part 53 includes a first support part 531, a second support part 532, and a third support part 533. The first support part 531 and the second support part 532 are arranged opposite each other in the Y-axis direction, and two ends of the third support part 533 in the Y-axis direction are connected to the first support part 531 and the second support part 532, respectively. The first support part 531 and the second support part 532 are arranged on two sides of the first movable part 51 in the Y-axis direction, respectively, and the third support part 533 is arranged on the side of the first movable part 51 that is farther from the imaging surface (or lens group, or image sensor) in the Z-axis direction. In this embodiment of the present application, the third support part 533 is movably connected to the fastening part 57 at an intermediate position in the Y-axis direction. Here, fastening portion 57 is a component that is fastened relatively to one another in optical image stabilization assembly 300 .

[0120] The first actuating part 52 is connected to the first movable part 51 and is configured to drive the first movable part 51 to rotate about the Y-axis and drive the optical element 4 to rotate about the Y-axis. For example, the first actuating part 52 may have a first magnet 521 and a first coil 522 arranged opposite each other in the X-axis direction. The first magnet 521 is arranged on the first movable part 51, and the first coil 522 is arranged on the fastening part 57. After power is supplied to the first coil 522, it can be seen that the first magnet 521 receives a force in the Z-axis direction according to the left-hand rule and Ampere's law. Because the first magnet 521 is fastened to the first movable part 51, the first magnet 521 can drive the first movable part 51 to move along the Z-axis. The first movable part 51 is connected to the second movable part 53 via a first elastic member 55, and the movement of the first movable part 51 causes the first elastic member 55 to flex and deform, causing the first movable part 51 to rotate around the Y axis.

[0121] It can be seen that under the action of the magnetic field of the first coil 522, the first magnet 521 can be subjected to a force in the positive or negative direction of the Z axis. Therefore, by changing the magnitude and direction of the current in the first coil 522, the magnitude and direction of the force applied to the first magnet 521 covered by the magnetic field can be controlled to control the motion trajectory and movement position of the first magnet 521, and further the direction and angle of rotation of the optical element 4 (or the first movable part 51 fastened to the first magnet 521) around the Y axis can be controlled to implement a vibration correction function.

[0122] In some embodiments, the positions of the first magnet 521 and the first coil 522 may be interchanged, for example, the first magnet 521 is disposed in the fastening part 57, and the first coil 522 is disposed in the first movable part 51.

[0123] In this embodiment of the present application, the movement in which the first actuating part 52 drives the optical element 4 to rotate around the Y-axis may also be referred to as a nodding movement. The first movable part 51 may also be referred to as a Y-axis base or a first rotating bracket of the optical element 4.

[0124] The second actuating part 54 is connected to the second movable part 53 and is configured to drive the second movable part 53 to rotate about the X-axis and to drive the optical element 4 to rotate about the X-axis. For example, the second actuating part 54 may have a second magnet 541 and a second coil 542 arranged opposite each other in the Y-axis direction. The second magnet 541 is arranged on the second movable part 53, and the second coil 542 is arranged on the fastening part 57. After the second coil 542 is powered on, it can be seen that the second magnet 541 is subjected to a force in the Z-axis direction according to the left-hand rule and Ampere's law. Because the second magnet 541 is fastened to the second movable part 53, the second magnet 541 drives the second movable part 53 to move along the Z axis, and because the second movable part 53 is movably connected to the fastening part 57, the second magnet 541 drives the second movable part 53 to rotate around the X axis.

[0125] It can be seen that under the action of the magnetic field of the second coil 542, the second magnet 541 can be subjected to a force in the positive or negative direction of the Z axis. Therefore, by changing the magnitude and direction of the current in the second coil 542, the magnitude and direction of the force applied to the second magnet 541 covered by the magnetic field can be controlled to control the motion trajectory and movement position of the second magnet 541, and further the direction and angle of rotation of the optical element 4 (or the second movable part 53 fastened to the second magnet 541) around the X axis, thereby implementing a vibration correction function.

[0126] In some embodiments, the positions of the second magnet 541 and the second coil 542 may be swapped. For example, the second magnet 541 is disposed in the fastening portion 57, and the second coil 542 is disposed in the second movable portion 53.

[0127] In some embodiments, the second actuating part 54 may include two second magnets 541 and two second coils 542, where one group of the second magnets 541 and the second coils 542 is arranged on the side of the first support part 531 of the second movable part 53, and the other group of the second magnets 541 and the second coils 542 is arranged on the side of the second support part 532 of the second movable part 53. For example, one second magnet 541 is fastened to the first support part 531, and the other second magnet 541 is fastened to the second support part 532. The two second coils 542 are arranged on the fastening part 57, where one second coil 542 and the second magnet 541 arranged on the first support part 531 are arranged opposite each other in the Y-axis direction, and the other second coil 542 and the second magnet 541 arranged on the second support part 532 are arranged opposite each other in the Y-axis direction.

[0128] In this case, the directions of the currents in the two second coils 542 are opposite. Thus, under the action of the magnetic field, one second magnet 541 receives a force in the positive direction of the Z axis, and the other second magnet 541 receives a force in the negative direction of the Z axis. Driving the two second magnets 541 causes the second movable part 53 to rotate in the same direction around the X axis.

[0129] By using two groups of second magnets 541 and second coils 542, the driving stability and driving speed of the second actuating part 54 can be improved, and the optical image stabilization effect and optical image stabilization efficiency can be improved.

[0130] In some embodiments, the second actuation portion 54 may alternatively include only one second magnet 541 and one second coil 542. The second magnet 541 and the second coil 542 may be disposed on the first support portion 531 side or on the second support portion 532 side.

[0131] In this case, one group of second magnets 541 and second coils 542 is used, which can reduce the weight of the voice coil motor 5 and the overall optical image stabilization assembly 300 while still implementing the actuation function. This can reduce the weight of the electronic device. In addition, since only one second coil 542 is involved, the circuit layout can also be simplified.

[0132] In this embodiment of the present application, the movement in which the second actuating part 54 drives the optical element 4 to rotate about the X-axis may also be referred to as a nodding movement. The second movable part 53 may also be referred to as an X-axis base or a second rotating bracket of the optical element 4.

[0133] In this embodiment of the present application, the second movable part 53 is movably connected to the fastening part 57 by a projection-and-groove or ball-and-groove fit, providing a fulcrum for the second movable part to rotate about the X-axis. To prevent the second movable part 53 from coming off the fastening part 57, a preload needs to be applied between the second movable part 53 and the fastening part 57.

[0134] In some embodiments, the preload may be provided by a magnetic attraction method. For example, as shown in FIG. 6 , a first groove 5711 may be provided in a wall 571 of the fastening portion 57 facing the third support portion 533, and the first groove 5711 is configured to accommodate a magnetic element, for example, a third magnet 59. The third magnet 59 is fastened to the first groove 5711. A ferromagnetic material (e.g., a metal such as iron, nickel, or cobalt) may be disposed on the third support portion 533 in an area facing the first groove 5711. For example, a portion of the third support portion 533 facing the first groove 5711 may be made of a ferromagnetic material, or a component made of a ferromagnetic material, for example, a magnetic conductive member, may be fastened to the surface of the third support portion 533 facing the first groove 5711. In this way, the preload between the second movable part 53 and the fastening part 57 can be provided by the magnetic attraction force between the third magnet 59 and the ferromagnetic material.

[0135] In some embodiments, the preload may be provided by elastic deformation of an elastic member. For example, as shown in FIG. 6 , the voice coil motor 5 may further include a second elastic member 56, and two ends of the second elastic member 56 in the Y-axis direction are connected to the second movable part 53 and the fastening part 57, respectively. In this embodiment of the present application, the distance between the surface of the second movable part 53 away from the third support part 533 in the Z-axis direction and the surface of the fastening part 57 away from the wall 571 in the Z-axis direction may be set to be greater than zero. Alternatively, the second movable part 53 may be understood to protrude from the fastening part 57 in the Z-axis direction. In this manner, the two ends of the second elastic member 56 connecting the second movable part 53 and the fastening part 57 have a predetermined distance in the Z-axis direction, and the second elastic member 56 is elastically deformed. In this manner, a preload can be applied between the second movable part 53 and the fastening part 57 by an elastic force generated by the elastic deformation.

[0136] The method of providing a preload between the second movable part 53 and the fastening part 57 will be explained in more detail below with reference to the accompanying drawings and will only be briefly described here.

[0137] The circuit board 58 is fastened to the fastening portion 57 and is configured to transmit a current signal, for example, to provide an electrical signal to the first coil 522 and the second coil 542 in the voice coil motor 5. In some embodiments, the circuit board 58 may be a flexible printed circuit (FPC). An FPC has characteristics such as high reliability, excellent flexibility, high wiring density, light weight, thinness, and excellent flexibility.

[0138] As mentioned in the description of Figure 6, the first movable part 51 is connected to the second movable part 53 via a first elastic member 55. The following provides a more detailed description with reference to the accompanying drawings.

[0139] FIG. 7 is a diagram showing the structure of the first movable part 51 of FIG.

[0140] 7, the first movable part 51 may include a first main body 511 and a first side wall 512 and a second side wall 513 located on both sides of the first main body 511 (e.g., on both sides of the first main body 511 in the Y-axis direction). The first side wall 512 and the second side wall 513 are disposed opposite to each other. In some embodiments, the first side wall 512 and the second side wall 513 are parallel to each other.

[0141] The first body 511, the first sidewall 512, and the second sidewall 513 form a first storage space, which is used to store the optical element 4 shown in FIG. 6 . In some embodiments, the shape of the first storage space matches the shape of the optical element 4. By way of example and not limitation, the first body 511 can include an inclined surface having the same inclination as the inclined surface 43 of the optical element 4, and the inclined surface 43 of the optical element 4 can be fastened to the inclined surface of the first body 511. A surface of the first sidewall 512 facing the second sidewall 513 can be fastened to the first connecting surface 44 of the optical element 4. A surface of the second sidewall 513 facing the first sidewall 512 can be fastened to the second connecting surface 45 of the optical element 4.

[0142] As shown in FIG. 7 , the first fulcrum element 514 is disposed on the first movable part 51, and is configured to connect to the second movable part 53 via a first elastic member 55. In some embodiments, the first fulcrum element 514 is disposed on a surface of the first side wall 512 away from the second side wall 513. For example, the first fulcrum element 514 may be a protrusion that protrudes in a direction away from the second side wall 513. For ease of distinction and explanation, the protrusion may be referred to as a first protrusion. In this embodiment of the present application, the first fulcrum element 514 includes a first arcuate surface 5141 that protrudes in a direction toward the first actuating part 52 along the X-axis. The first arcuate surface 5141 is used to contact the second movable part 53 and functions as a fulcrum for implementing rotation of the first movable part 51 around the Y-axis.

[0143] In some embodiments, the first fulcrum element 514 and the first movable part 51 are integrally formed. Alternatively, the first fulcrum element 514 is provided separately and fastened to the first movable part 51.

[0144] In some embodiments, the first fulcrum element 514 may be fastened to the first elastic member 55 via a connection surface 5142 of the first fulcrum element 514 opposite the first arcuate surface 5141, for example, the connection surface 5142 being fastened to a portion of the first elastic member 55 via gluing, welding, etc. to implement the connection between the first movable part 51 and the second movable part 53.

[0145] In some embodiments, a first positioning pin 5143 may be disposed on the connection surface 5142, protruding away from the first actuating part 52 along the X axis, and the first positioning pin 5143 is configured to fit into a hole provided on the first elastic member 55 to limit the position of the first movable part 51.

[0146] By way of example and not limitation, the first fulcrum element 514 may include a second body 5144 and a first positioning pin 5143 protruding from the surface of the second body 5144 in a direction away from the first actuating portion 52, wherein the surface of the second body 5144 closer to the first actuating portion 52 is a first arcuate surface 5141 protruding toward the first actuating portion 52, and the surface of the second body 5144 on which the first positioning pin 5143 is located is a connection surface 5142.

[0147] In some embodiments, the first fulcrum element 514 or the second body 5144 is a D-shaped shaft.

[0148] When the first fulcrum element 514 includes a first positioning pin 5143, the connection surface 5142 may be fastened to a part of the first elastic member 55 to implement the connection between the first movable part 51 and the second movable part 53, or the connection surface 5142 may not be fastened to the first elastic member 55, but the connection between the first movable part 51 and the second movable part 53 is implemented by the engagement between the first positioning pin 5143 and a hole provided on the first elastic member 55 and the supporting function of the second movable part 53 on the first fulcrum element 514.

[0149] In some embodiments, similar to the first side wall 512, the first fulcrum element 514 may also be disposed on a surface of the second side wall 513 that is remote from the first side wall 512. The first fulcrum element 514 disposed on the first side wall 512 and the first fulcrum element 514 disposed on the second side wall 513 are symmetrical.

[0150] In some other embodiments, the second protrusion protruding away from the first side wall 512 may also be positioned on a surface of the second side wall 513 away from the first side wall 512, the second protrusion being fastened to a portion of the first elastic member 55, and the second protrusion not being in contact with the second movable part 53.

[0151] It should be noted that the direction away from the first actuating portion 52 along the X-axis in this embodiment of the present application may also be understood as the direction toward the incident light (or object side), i.e., the positive direction of the X-axis. Similarly, the direction toward the first actuating portion 52 along the X-axis may also be understood as the direction away from the incident light (or object side), i.e., the negative direction of the X-axis.

[0152] FIG. 8 is a structural diagram and a partially enlarged view of the second movable portion 53 of FIG.

[0153] 8, the second movable part 53 has a first support part 531, a second support part 532, and a third support part 533. The first support part 531 and the second support part 532 are arranged opposite to each other in the Y-axis direction, and two ends of the third support part 533 in the Y-axis direction are connected to the first support part 531 and the second support part 532, respectively.

[0154] In this embodiment of the present application, in the assembled state, the second movable part 53 is arranged around the outside of the first movable part 51, the first support part 531 is located on the side of the first side wall 512 away from the second side wall 513, and the second support part 532 is located on the side of the second side wall 513 away from the first side wall 512. The first support part 531 of the second movable part 53 is located opposite the first side wall 512 of the first movable part 52, the second support part 532 of the second movable part 53 is located opposite the second side wall 513 of the first movable part 52, and the third support part 533 of the second movable part 53 is located outside the first body 511 of the first movable part 52.

[0155] 8 , a bearing table 534 is disposed on the second movable part 53. In some embodiments, the bearing table 534 is disposed on a side of the first support part 531 facing the second support part 532, the table surface of the bearing table 534 faces the positive direction of the X-axis, and the bearing table 534 is configured to support the first elastic member 55 and the first fulcrum element 514 of the first movable part 51 to implement the connection between the first movable part 51 and the second movable part 53.

[0156] In some embodiments, the table surface of the bearing table 534 includes a first cutting surface 5341, a second cutting surface 5342, a third cutting surface 5343, a fourth cutting surface 5344, and a fifth cutting surface 5345, which are connected sequentially in the Z-axis direction. In other words, two ends of the third cutting surface 5343 in the Z-axis direction are connected to the second cutting surface 5342 and the fourth cutting surface 5344, respectively, one end of the second cutting surface 5342 remote from the third cutting surface 5343 in the Z-axis direction is connected to the first cutting surface 5341, and one end of the fourth cutting surface 5344 remote from the third cutting surface 5343 in the Z-axis direction is connected to the fifth cutting surface 5345.

[0157] The first cutting surface 5341 and the fifth cutting surface 5345 are on the same plane, for example, both located on the first plane. The first plane is parallel to the plane YZ, i.e., perpendicular to the direction X. The first cutting surface 5341 and the fifth cutting surface 5345 are used to fasten to the first connecting portion of the first elastic element 55. For example, the first cutting surface 5341 and the fifth cutting surface 5345 are fastened to two ends of the first elastic member 55, thereby fastening the first elastic member 55 to the second movable part 53.

[0158] In some embodiments, a second positioning pin 5346 protruding in the positive direction of the X-axis is provided on the first cut surface 5341, and a third positioning pin 5347 protruding in the positive direction of the X-axis is provided on the fifth cut surface 5345. The second positioning pin 5346 and the third positioning pin 5347 are configured to fit into holes provided in the first elastic member 55 and to limit the relative positional relationship between the first elastic member 55 and the bearing table 534.

[0159] A first step is formed between first cut surface 5341 and second cut surface 5342, and a second step is formed between fifth cut surface 5345 and fourth cut surface 5344. That is, first cut surface 5341 and second cut surface 5342 form a step surface, and fifth cut surface 5345 and fourth cut surface 5344 form a step surface. The first step and the second step are configured to ensure a space for deformation of first elastic member 55.

[0160] In some embodiments, the second cutting surface 5342 and the fourth cutting surface 5344 are on the same plane, for example, both located on the second plane. The second plane is parallel to the YZ plane and is lower than the first plane in the X direction. The distance between the second cutting surface 5342 and the first plane and the distance between the fourth cutting surface 5344 and the first plane are used to provide a deformation space for the deformation portion of the first elastic member 55. Correspondingly, the height of the first step is equal to the height of the second step. In this way, the second cutting surface 5342 and the fourth cutting surface 5344 may be prepared in the same process to simplify the manufacturing process of the second movable part 53.

[0161] Indeed, in some other embodiments, the second cutting surface 5342 and the fourth cutting surface 5344 may alternatively not be on the same plane, as long as the height of the first step and the height of the second step satisfy the requirement that the minimum space required for deformation of the first elastic member 55 is ensured.

[0162] In this embodiment of the present application, the third cut surface 5343 is recessed in the second plane toward the side away from the first plane to form a support groove for supporting the first fulcrum element 514 of the first movable part 51, so that the first fulcrum element 514 rotates around the Y axis under the support and restriction of the third cut surface 5343. In other words, the support groove is provided in an area on the bearing table 534 corresponding to the first fulcrum element 514 and is configured to support the first fulcrum element 514.

[0163] In some embodiments, the third cutting surface 5343 may be a V-shaped surface or an arc surface. That is, the support groove may be a V-shaped groove or an arc-shaped groove. For example, if the third cutting surface 5343 is an arc surface, the third cutting surface 5343 may match the shape of the first arc surface 5141 of the first fulcrum element 514.

[0164] In some embodiments, similar to the first support portion 531, the bearing table 534 may also be disposed on the side of the second support portion 532 facing the first support portion 531. The bearing table 534 disposed on the first support portion 531 and the bearing table 534 disposed on the second support portion 532 are symmetrical.

[0165] In other words, the voice coil motor 5 may include two first fulcrum elements 514, one of which is arranged on the side of the first side wall 512 facing the first support portion 531, a bearing table 534 is arranged on the side of the first support portion 531 facing the first side wall 512, and the first fulcrum element 514 on the first side wall 512 is supported by the bearing table 534 on the first support portion 531, and the other of the two first fulcrum elements 514 is arranged on the side of the second side wall 513 facing the second support portion 532, and the bearing table 534 is arranged on the side of the second support portion 532 facing the second side wall 513, and the first fulcrum element 514 on the second side wall 513 is supported by the bearing table 534 on the second support portion 532.

[0166] In some other embodiments, corresponding to the case where the second protrusion is disposed on the second side wall 513, the bearing table 534 disposed on the second support portion 532 may not have the structure of the second cut surface 5342, the third cut surface 5343, and the fourth cut surface 5344 shown in FIG. 8 , but the second cut surface 5342, the third cut surface 5343, and the fourth cut surface 5344 may be disposed on the same plane, which is recessed in the negative direction of the X-axis with respect to the first plane on which the first cut surface 5341 and the fifth cut surface 5345 are located, to ensure space for deformation of the first elastic member 55. In this case, the plane does not contact the first fulcrum element 514 either.

[0167] FIG. 9 is a diagram showing the structure of the first elastic member 55 of FIG.

[0168] In this embodiment of the present application, the first elastic member 55 may include a first connection portion, a second connection portion, and a deformation portion located between the first connection portion and the second connection portion, where the first connection portion is fastened to the first fulcrum element 514 and the second connection portion is fastened to the bearing table 534.

[0169] For example, as shown in FIG. 9 , the first elastic member 55 includes a first end 551, a second end 552, and a connecting end 553 located between the first end 551 and the second end 552. The first end 551 and the second end 552 are configured to fasten to the second movable part 53, and the connecting end 553 is configured to connect to (e.g., fasten or abut) the first movable part 51. The portions of the first elastic member 55 other than the first end 551, the second end 552, and the connecting end 553 have a small width and high flexibility, and can be elastically deformed under the action of a force. Here, the connecting end 553 is an example of a first connecting portion, and the first end 551 and the second end 552 are examples of a second connecting portion. The portion between the first end 551 and the connecting end 553, and the portion between the second end 552 and the connecting end 553 are examples of deformed portions.

[0170] It can be understood that the first elastic member 55 may alternatively have another structure. For ease of understanding and explanation, the following uses an example in which the first elastic member 55 has the structure shown in Figure 9 for explanation. However, the present application is not limited thereto.

[0171] In some embodiments, the connection end 553 may be provided with a first through hole 5531, which is configured to engage with a first positioning pin 5143 on the first movable part 51 to limit the relative position between the first elastic member 55 and the first movable part 51 and the movement of the first movable part 51.

[0172] In some embodiments, the first end 551 may be provided with a second through hole 5511 and the second end 552 may be provided with a third through hole 5521, and the second through hole 5511 and the third through hole 5521 are used to engage with a second positioning pin 5346 and a third positioning pin 5347, respectively, on the second movable part 53 to limit the relative position between the first elastic member 55 and the second movable part 53.

[0173] In other words, a first through hole (e.g., the first through hole 5531) is provided in the first connecting portion, a first positioning pin (e.g., the first positioning pin 5143) is arranged on a surface of the first fulcrum element 514 fastened to the first connecting portion, and the first elastic member 55 is sleeve-connected to the first positioning pin through the first through hole. A second through hole (e.g., the second through hole 5511 or the third through hole 5521) is provided in the second connecting portion, a second positioning pin (e.g., the second positioning pin 5346 or the third positioning pin 5347) is arranged on a surface of the bearing table 534 fastened to the second connecting portion, and the first elastic member 55 is sleeve-connected to the second positioning pin through the second through hole.

[0174] By way of example and not limitation, the first resilient member 55 may be a spring plate.

[0175] 7 to 9, exemplary structures of the first movable part 51, the second movable part 53, and the first elastic member 55 have been individually described. With reference to Figs. 10 to 12, the connection relationship between the first movable part 51, the second movable part 53, and the first elastic member 55 in the assembled state will be described.

[0176] FIG. 10 is an assembly diagram of the first elastic member 55 and the first movable part 51. As shown in FIG.

[0177] 10 , for example, the first fulcrum element 514 includes a first positioning pin 5143, and a connecting end 553 on the first elastic member 55 is provided with a first through hole 5531. The connecting end 553 is sleeve-connected to the first positioning pin 5143 through the first through hole 5531. Specifically, the connecting end 553 is in contact with the connecting surface 5142 of the first fulcrum element 514.

[0178] FIG. 11 is a schematic cross-sectional view of the first elastic member 55, the first movable part 51, and the second movable part 53 in an assembled state. (a) of FIG. 11 is a projection of the voice coil motor 5 and the optical element 4 in an assembled state onto the YZ plane. (b) of FIG. 11 is a schematic cross-sectional view taken along line AA in (a) of FIG. 11. The schematic cross-sectional view is mainly used to show the connection relationship between the first elastic member 55, the first movable part 51, and the second movable part 53. (c) of FIG. 11 is a schematic cross-sectional view taken along line BB in (a) of FIG. 11. The schematic cross-sectional view is mainly used to show the positional relationship between the components of the first actuating part 52 configured to drive the optical element 4 to rotate around the Y axis. (d) of FIG. 11 is a partially enlarged view C of (b) of FIG. 11. For ease of understanding, FIG. 12 is a schematic three-dimensional cross-sectional view and a partially enlarged view of the first elastic member 55, the first movable part 51 and the second movable part 53 in an assembled state.

[0179] As shown in Figures 11 and 12, in the assembled state, the first end 551 of the first elastic member 55 is fastened to the first cut surface 5341 of the second movable part 53, and the second end 552 of the first elastic member 55 is fastened to the fifth cut surface 5345 of the second movable part 53, thereby fastening the first elastic member 55 to the second movable part 53.

[0180] The connecting end 553 of the first elastic member 55 is fastened to the first fulcrum element 514 of the first movable part 51, so that the first elastic member 55 is fastened to the first movable part 51. A portion between the first end 551 and the connecting end 553 and a portion between the second end 552 and the connecting end 553 can be elastically deformed, so that the first movable part 51 can move relative to the second movable part 53.

[0181] In some embodiments, when the second positioning pin 5346 is disposed on the first cutting surface 5341, the third positioning pin 5347 is disposed on the fifth cutting surface 5345, the second through hole 5511 is provided in the first end 551, and the third through hole 5521 is provided in the second end 552, the first end 551 is sleeve-connected to the second positioning pin 5346 through the second through hole 5511, and the second end 552 is sleeve-connected to the third positioning pin 5347 through the third through hole 5521. In this manner, the engagement between the second positioning pin 5346 and the second through hole 5511 and the engagement between the third positioning pin 5347 and the third through hole 5521 limits the relative positional relationship between the first elastic member 55 and the second movable part 53, thereby positioning the first elastic member 55. In this way, assembly is convenient, and in addition, if the fixed connection relationship between the first elastic member 55 and the second movable part 53 partially or completely fails, the first elastic member 55 does not need to be removed from the bearing table 534 during the second rotation 53, so that the positional stability of the first elastic member 55 can be improved.

[0182] The first fulcrum element 514 of the first movable part 51 is supported on the third cut surface 5343 of the second movable part 53, i.e., the first movable part 51 is supported on the inner wall of the support groove via the first arc surface 5141. The third cut surface 5343 is a V-shaped surface or an arc surface and can fit into the first arc surface 5141 of the first fulcrum element 514, so that the first fulcrum element 514 can rotate around the Y-axis on the third cut surface 5343. Because the first fulcrum element 514 rotates on the third cut plane 5343, the rotation center of the first fulcrum element 514 (i.e., the rotation center of the first movable part, or the rotation center of the first movable part 51 and the optical element 4 in a connected state) coincides with the mass center of the first movable part 51 and the optical element 4 fastened to each other (i.e., the mass center of the first movable part 51 and the optical element 4 in a connected state). That is, the mass centers of the first movable part 51 and the optical element 4 fastened to each other are located on the rotation center line of the first fulcrum element 514. In this way, when the first elastic member 55 elastically deforms, the first elastic member 55 does not deform without being constrained in any direction, but rather deforms in a relatively constant direction. This reduces the effect of interference torque and can reduce or avoid movement or rotation of the voice coil motor (or the first movable part 51, or the optical element 4) in an undesired movement direction, resulting in an improved interference resistance of the motor and improved image quality.

[0183] In some embodiments, when the first positioning pin 5143 is disposed on the first fulcrum element 514 and the first through-hole 5531 is provided on the connecting end 553, the connecting end 553 is sleeve-connected onto the first positioning pin 5143 through the first through-hole 5531. The relative positional relationship between the first elastic member 55 and the first movable part 51 can be limited by the engagement between the first through-hole 5531 and the first positioning pin 5143 to position the first movable part 51. In this way, assembly is convenient. In addition, if the fixed connection between the first elastic member 55 and the first movable part 51 partially or completely fails, the first elastic member 55 does not need to be removed from the first fulcrum element 514 of the first movable part 51, thereby improving the positional stability of the first movable part 51.

[0184] In this embodiment of the present application, the first arcuate surface 5141 of the first fulcrum element 514 is in contact with at least a portion of the third cutting surface 5343. Therefore, friction between the first arcuate surface 5141 and the third cutting surface 5343 can reduce or avoid movement of the optical element 4 in the Y-axis direction, that is, reduce or avoid movement of the voice coil motor in the Y-axis direction. In this way, interference caused by the undesired degree of freedom in the movement direction on the vibration correction process of the voice coil motor can be reduced, and the image stabilization effect of the voice coil motor can be improved.

[0185] In some embodiments, in an assembled state, there is a first preset distance in the X direction between a surface of the first fulcrum element 514 fastened to the first connecting portion and a surface of the bearing table 534 fastened to the second connecting portion, and the first preset distance is used by the first elastic member 55 to apply a first preload to the first fulcrum element 514. In other words, in the X-axis direction, there is a first preset distance between a surface of the first fulcrum element 514 that contacts the first elastic member 55 (e.g., the connecting surface 5142) and a surface of the second movable part 53 that contacts the first elastic member 55 (e.g., the first cutting surface 5341 or the fifth cutting surface 5345), and the surface of the first fulcrum element 514 that contacts the first elastic member 55 is closer to the positive direction of the X axis. The first preset distance is set so that the first elastic member 55 is deflected to a certain extent in the assembled state. The bending can apply a first preload to the first fulcrum element 514 so that the first fulcrum element 514 abuts against the third cut surface 5343. In this way, the friction between the first arc surface 5141 and the third cut surface 5343 can be increased, further reducing the movement of the optical element 4 in the Y-axis direction. The first preload can also restrict the movement of the optical element 4 driven by the first movable part 51 in the X-axis direction, reducing the degree of freedom of the optical element 4 in an unnecessary movement direction. The first preload can also reduce the position difference of the first movable part 51 in different attitudes of the compact camera module, reducing the sensitivity difference in different attitudes, and improving the image stabilization effect.

[0186] 11(c), the first actuating part 52 has a first magnet 521 and a first coil 522 arranged opposite each other in the X-axis direction. The first magnet 521 is fastened to the first movable part 51, and the first coil 522 is fastened to the fastening part 57. After the first coil 522 is energized, the first magnet 521 is subjected to an acting force F indicated by the arrow in the figure under the action of the magnetic field of the first coil 522. Under the acting force, the first magnet 521 drives the first movable part 51 to rotate around the Y-axis by using the first fulcrum element 514 as a fulcrum.

[0187] As mentioned in the description of Figure 6, the second movable part 53 is connected to the fastening part 57. The following provides a more detailed description with reference to the accompanying drawings.

[0188] FIG. 13 is a diagram showing the structure of the fastening portion 57 of FIG.

[0189] 13 , the fastening portion 57 may have a bottom wall 574 and a third side wall 571, a fourth side wall 572, and a fifth side wall 573 extending from an edge of the bottom wall 574 in the positive direction of the X-axis. The fourth side wall 572 and the fifth side wall 573 are disposed opposite each other in the Y-axis direction, and two ends of the third side wall 571 in the Y-axis direction are connected to the fourth side wall 572 and the fifth side wall 573, respectively. The third side wall 571 is further configured to be movably connected to the second movable portion 53.

[0190] All the walls of the fastening part 57 form a second accommodating space, which is used to accommodate the second movable part 53 , the first movable part 51 and the optical element 4 .

[0191] FIG. 14 is a structural diagram and a partially enlarged view of the second movable portion 53 in FIG.

[0192] 14 , the second movable part 53 has a first support part 531, a second support part 532, and a third support part 533. The first support part 531 and the second support part 532 are arranged opposite each other in the Y-axis direction, and two ends of the third support part 533 in the Y-axis direction are connected to the first support part 531 and the second support part 532, respectively. The third support part 533 is configured to be movably connected to the fastening part 57. In the assembled state, the third support part 533 is arranged opposite a third side wall 571 of the fastening part 57.

[0193] In this embodiment of the present application, the second movable part 53 is movably connected to the fastening part 57 by a projection-to-groove fit or a ball-to-groove fit.

[0194] 13 , the first groove 5711, the second groove 5712, and the third groove 5713 are provided on the side of the third side wall 571 facing the third support portion 533, and the second groove 5712 and the third groove 5713 are arranged on either side of the first groove 5711 in the direction X. The second groove 5712 and the third groove 5713 are on the same straight line. Alternatively, it may be understood that the projection of the center line of the second groove 5712 in the direction X onto the XY plane coincides with the projection of the center line of the third groove 5713 in the direction X onto the XY plane.

[0195] 14 , the fourth groove 5331 and the fifth groove 5332 are arranged on the side of the third support portion 533 facing the third side wall 571, and the fourth groove 5331 and the fifth groove 5332 are on the same straight line. In other words, it can be understood that the projection of the center line of the fourth groove 5331 in the direction X onto the XY plane coincides with the projection of the center line of the fifth groove 5332 in the direction X onto the XY plane. In the assembled state, the fourth groove 5331 is arranged opposite the second groove 5712, and the fifth groove 5332 is arranged opposite the third groove 5713.

[0196] FIG. 15 is a schematic cross-sectional view of the second movable part 53 and the fastening part 57 in the assembled state.

[0197] 15 , a cavity enclosed by the fourth groove 5331 and the second groove 5712 in an assembled state is configured to accommodate a first ball 601. A portion of the first ball 601 is located in the fourth groove 5331, and a portion of the first ball 601 is located in the second groove 5712. A cavity enclosed by the fifth groove 5332 and the third groove 5713 in an assembled state is configured to accommodate a second ball 602. A portion of the second ball 602 is located in the fifth groove 5332, and a portion of the second ball 602 is located in the third groove 5713.

[0198] The first ball 601 can be fastened to the fourth groove 5331 or the second groove 5712. The second ball 602 can be fastened to the fifth groove 5332 or the third groove 5713.

[0199] The first ball 601 is used as an example. For example, as shown in FIG. 15 , the first hemispherical surface of the first ball 601 may be fastened to the fourth groove 5331 via an adhesive or the like, and a portion of the second hemispherical surface of the first ball 601 contacts a portion of the inner wall of the second groove 5331. Indeed, it can be understood that in some other embodiments, the first hemispherical surface of the first ball 601 may be fastened to the second groove 5712 via an adhesive or the like, and a portion of the second hemispherical surface of the first ball 601 contacts a portion of the inner wall of the fourth groove 5331. This is not limited to the embodiments of the present application.

[0200] After a preload is applied between the second movable part 53 and the fastening part 57, the fourth groove 5331 and the second groove 5712 sandwich the first ball 601, and the fifth groove 5332 and the third groove 5713 sandwich the second ball 602. Under the constraining impact of the fourth groove 5331 and the second groove 5712 on the first ball 601 and the constraining impact of the fifth groove 5332 and the third groove 5713 on the second ball 602, the connecting line between the spherical center (or mass center, or center) of the first ball 601 and the spherical center (or mass center, or center) of the second ball 602 is parallel to the X-axis direction. The movable connection between the second movable part 53 and the fastening part 57 may be implemented by sliding between the first ball 601 and the surface of a groove (e.g., the second groove 5712) and between the second ball 602 and the surface of a groove (e.g., the third groove 5713). Under the drive of the second actuation part 54, the second movable part 53 can rotate around the X-axis relative to the fastening part 57. It can be understood that the rotation center line of the second movable part 53 coincides with the connection line between the spherical center of the first ball 601 and the spherical center of the second ball 602.

[0201] In this embodiment of the present application, the second movable part 53 has two fulcrums in the X-axis direction, and the second groove 5712 and the third groove 5713 exert a restrictive influence on the first ball 601 and the second ball 602 in the Y-axis direction. As a result, the stability of rotation around the X-axis can be improved, and the rotation of the optical element 4 around the Z-axis can be reduced or avoided. That is, the rotation of the voice coil motor around the Z-axis can be reduced or avoided. In this way, by reducing the degree of freedom of the optical element 4 in an unnecessary direction of movement, the interference with the vibration correction process of the voice coil motor caused by the degree of freedom in the unnecessary direction of movement can be reduced, and the image stabilization effect of the voice coil motor can be improved. In addition, the two fulcrums of the second movable part 53 in the X-axis direction can disperse impacts and avoid the impact of impact deformation on the image stabilization effect that would occur if a single ball were used.

[0202] In some embodiments, both the second groove 5712 and the third groove 5713 may be V-shaped grooves. The second groove 5712 is used as an example. Specifically, the cross section of the second groove 5712 in the YZ plane is V-shaped, or the extension direction of the V-shaped groove is parallel to the X-axis direction. Two side surfaces of the V-shaped groove are configured to be in contact with the ball and support the ball, and can suppress rotation of the second movable part 53 about the Z-axis while the second movable part 53 rotates about the X-axis.

[0203] In some embodiments, both the second groove 5712 and the third groove 5713 may be tapered grooves, such as one type of conical groove, a circular table groove, and a prism conical groove. The second groove 5712 is used as an example. Specifically, the cross-sectional area of ​​the second groove 5712 in the XY plane gradually decreases in the negative direction of the Z axis, or the side walls of the second groove 5712 gradually approach the negative direction of the Z axis. The side walls of the tapered groove can position the ball (e.g., the first ball 601 or the second ball 602), i.e., the ball cannot move linearly in the direction X or the direction Y within the tapered groove. In this way, the relative positional relationship between the second movable part 53 and the fastening part 57 can be limited, reducing or preventing the movement of the optical element 4 in the direction X and the movement of the optical element 4 in the direction Y, thereby reducing the degree of freedom of the optical element 4 in undesired directions of movement.

[0204] In some embodiments, one of the second groove 5712 and the third groove 5713 is a tapered groove, and the other is a V-shaped groove. In this way, the ball can be positioned through the tapered groove to reduce the degree of freedom in an undesired direction of movement of the optical element 4, and mounting errors can be absorbed through the V-shaped groove to reduce assembly difficulties.

[0205] It can be understood that the above-mentioned groove-type arrangement manner of the second groove 5712 and the third groove 5713 is based on the ball being fastened to the second movable part 53. In some other embodiments, when the ball is fastened to the fastening part 57, the above-mentioned groove-type arrangement manner is applicable to the fourth groove 5331 and the fifth groove 5332 on the third support part 533, in other words, the fourth groove 5331 or the fifth groove 5332 is one of a tapered groove or a V-shaped groove. For brevity, the details will not be described again.

[0206] The above has mainly described the manner in which second movable part 53 and fastening part 57 are movably connected by fitting a ball into a groove, with reference to Fig. 15. Next, the manner in which second movable part 53 and fastening part 57 are movably connected by fitting a protrusion into a groove will be described with reference to Fig. 16.

[0207] FIG. 16 is a schematic cross-sectional view of the second movable part 53 and the fastening part 57 in an assembled state.

[0208] 16 , the fourth groove 5331 and the fifth groove 5332 shown in FIG. 14 do not have to be provided on the third support portion 533, but the third protrusion 5334 and the fourth protrusion 5335 are arranged on the side of the third support portion 533 facing the fastening portion 57, and the third protrusion 5334 and the fourth protrusion 5335 are arranged in the X-axis direction. The third protrusion 5334 is housed in the second groove 5712, and the fourth protrusion 5335 is housed in the third groove 5713. Here, the surface of the third protrusion 5334 in contact with the second groove 5712 is an arcuate surface, and the surface of the fourth protrusion 5335 in contact with the third groove 5713 is an arcuate surface.

[0209] In other words, the third protrusion 5334 includes a second arcuate surface 5336, the fourth protrusion 5335 includes a third arcuate surface 5337, the second arcuate surface 5336 contacts the inner wall of the second groove 5712, and the third arcuate surface 5337 contacts the inner wall of the third groove 5713. When the second movable part 53 rotates around the X axis, the second arcuate surface 5336 slides against the inner wall of the second groove 5712, and the third arcuate surface 5337 slides against the inner wall of the third groove 5713.

[0210] In some embodiments, the connecting line between the center (or spherical center) of the second arcuate surface 5336 and the center (or spherical center) of the third arcuate surface 5337 is parallel to the X-axis. The rotation center line of the second movable part 53 coincides with the connecting line between the center (or spherical center) of the second arcuate surface 5336 and the center (or spherical center) of the third arcuate surface 5337.

[0211] Indeed, it may be understood that in some other embodiments, the fourth groove 5331 and the fifth groove 5332 shown in Figure 14 may be disposed on the third support part 533, and the third protrusion 5334 and the fourth protrusion 5335 shown in Figure 16 may be disposed on the side of the fastening part 57 facing the second movable part 53. In other words, the positions of the protrusions and grooves may be exchanged, and the second movable part 53 and the fastening part 57 may still be movably connected.

[0212] In some embodiments, the third protrusion 5334 and the fourth protrusion 5335 may be integrally formed with the third support portion 533 .

[0213] In some embodiments, the material of the third protrusion 5334 and the fourth protrusion 5335 may be a plastic material. In this way, when the second movable part 53 rotates around the X axis, friction between the third protrusion 5334 and the inner wall of the second groove 5712 and friction between the fourth protrusion 5335 and the inner wall of the third groove 5713 can be reduced.

[0214] In some embodiments, the inner walls of the second groove 5712 and the inner walls of the third groove 5713 can be lubricated to reduce friction.

[0215] In other words, one of the second movable part 53 and the fastening part 57 is the first component, and the other is the second component. The first component is provided with a second fulcrum element (e.g., the first ball 601 or the third protrusion 5334) and a third fulcrum element (e.g., the second ball 602 or the fourth protrusion 5335) arranged in the X-axis direction, and the second fulcrum element and the third fulcrum element are fastened to the second component, the second fulcrum element including a second arc surface (e.g., the spherical surface of the first ball 601 or the second arc surface 5336 on the fourth protrusion 5335), and the third fulcrum element including a third arc surface (e.g., the spherical surface of the second ball 602 or the third arc surface 5337 on the third protrusion 5334). The second component is provided with a second groove (e.g., second groove 5712) and a third groove (e.g., third groove 5713) arranged in the X-axis direction, the second groove is used to accommodate at least a portion of the second fulcrum element, the inner wall of the second groove contacts the second arcuate surface, and the third groove is used to accommodate at least a portion of the third fulcrum element, the inner wall of the third groove contacts the third arcuate surface. When the second actuating part 54 drives the second movable part 53 to rotate about the X-axis direction, the second arcuate surface is supported by the inner wall of the second groove, and the third arcuate surface is supported by the inner wall of the third groove, thereby limiting the rotation of the second movable part 53 about the Z-axis direction.

[0216] In some embodiments, the connecting line between the center of rotation of the second arcuate surface and the center of rotation of the third arcuate surface is parallel to the X-axis direction.

[0217] As mentioned above, in some embodiments, the second and third fulcrum elements are balls. Alternatively, the second and third fulcrum elements are protrusions of the first component extending toward the second component.

[0218] In this embodiment of the present application, it is necessary to provide a preload between the second movable part 53 and the fastening part 57 to prevent the second movable part 53 from coming off the fastening part 57 .

[0219] In some embodiments, the preload between the second movable part 53 and the fastening part 57 may be provided by magnetic attraction.

[0220] 15 and 16 , the first groove 5711 disposed in the third side wall 571 and located between the second groove 5712 and the third groove 5713 is used to accommodate the third magnet 59. For example, the third magnet 59 is fastened to the first groove 5711. The magnetically conductive member 603 is disposed in a region of the third support part 533 facing the first groove 5711. The preload between the second movable part 53 and the fastening part 57 can be provided by the magnetic attractive force between the third magnet 59 and the magnetically conductive member 603. In other words, the magnetic attractive force between the third magnet 59 and the magnetically conductive member 603 is used to apply a preload to the second fulcrum element and the third fulcrum element.

[0221] In some embodiments, by adjusting the magnetic force of the third magnet 59, the pre-compression state between the second moving part 53 and the fastening part 57 can be changed, thereby implementing an iterative evolution of the motor architecture.

[0222] In some embodiments, the preload between the second movable part 53 and the fastening part 57 may be provided by elastic deformation of an elastic member.

[0223] 17 is a diagram of the structure of the second elastic member 56 according to one embodiment of the present application. As shown in FIG. 17, the second elastic member 56 includes a third end 561, a fourth end 562, and a cantilever 563 located between the third end 561 and the fourth end 562. The third end 561 (or referred to as the third connecting portion) is configured to fasten to the fastening portion 57, and the fourth end 562 (or referred to as the fourth connecting portion) is configured to fasten to the second movable portion 53. The cantilever 563 has a small width, is highly flexible, and can be elastically deformed under the action of a force.

[0224] In this embodiment of the present application, there is a second preset distance in the Z-axis direction between the surface of the fastening part 57 fastened to the third end 561 and the surface of the second movable part 53 fastened to the fourth end 562, and the second preset distance is used by the second elastic member 56 to apply a preload to the second fulcrum element and the third fulcrum element.

[0225] 18 is a partially enlarged view of the second movable part 53 and the fastening part 57 in an assembled state. As shown in FIG. 18, for example, the second elastic member 56 is connected to the first support part 531 of the second movable part 53 and the fifth side wall 573 of the fastening part 57. A third end 561 of the second elastic member 56 is fastened to an end surface of the fifth side wall 573 in the positive direction of the Z axis, and a fourth end 562 of the second elastic member 56 is fastened to an end surface of the first support part 531 facing in the positive direction of the Z axis. There is a second predetermined distance in the Z axis direction between the end surface of the first support part 531 facing in the positive direction of the Z axis and the end surface of the fifth side wall 573 facing in the positive direction of the Z axis. The end surface of the first support part 531 facing in the positive direction of the Z axis is closer to the positive direction of the Z axis. The second preset distance is set so that the second elastic member 56 is deformed to a certain extent in the assembled state. This deformation applies a second preload to the second movable part 53, causing the third support part 533 of the second movable part 53 to abut against the fastening part 57 at a fulcrum. The second preload also reduces the positional difference of the second movable part 52 in different positions of the compact camera module, reducing the sensitivity difference in different positions and improving the image stabilization effect.

[0226] In some embodiments, by adjusting the second preset distance, the pre-compression state between the second moving part 53 and the fastening part 57 can be changed, thereby implementing an iterative evolution of the motor architecture.

[0227] In some embodiments, the voice coil motor 5 may include two second elastic elements 56. An end surface of the fourth side wall 572 remote from the third side wall 571 in the Z-axis direction is connected to an end surface of the second support portion 532 remote from the third support portion 533 in the Z-axis direction via one of the two second elastic elements 56, and an end surface of the fifth side wall 573 remote from the third side wall 571 in the Z-axis direction is connected to an end surface of the first support portion 531 remote from the third support portion 533 in the Z-axis direction via the other of the two second elastic elements 56.

[0228] It may be understood that the second support part 532 of the second movable part 53 may alternatively be connected to the fourth side wall 572 of the fastening part 57 via the second elastic member 56. In this way, a preload is applied to the symmetrical part of the second movable part 53, which may result in improved stability of the architecture.

[0229] By way of example and not limitation, the second resilient element 56 may be a spring leaf.

[0230] In some embodiments, the preload between the second movable part 53 and the fastening part 57 may be obtained by combining a magnetic attraction method with an elastic deformation method of an elastic member, thereby ensuring that the preload state between the second movable part 53 and the fastening part 57 is adjustable and improving the reliability of applying the preload.

[0231] FIG. 19 is an assembly diagram of an optical image stabilization assembly according to one embodiment of the present application.

[0232] As an example and not by way of limitation, as shown in (a), (b), and (c) of Figure 19, the first actuating part 52 configured to drive the first movable part 51 to rotate about the Y-axis includes a first magnet 521 and a first coil 522, the first coil 522 may be fastened to the bottom wall 574 of the fastening part 57, the first magnet 521 may be fastened to the first body 511 of the first movable part 51, and the first magnet 521 is positioned opposite the first coil 522.

[0233] The second actuating part 54, which drives the second movable part 51 to rotate around the X-axis, has two groups of second magnets 541 and second coils 542. The two second coils 542 may be fastened to the fourth side wall 572 and the fifth side wall 573 of the fastening part 57, respectively, and the two second magnets 541 may be fastened to the first support part 531 and the second support part 532 of the second movable part 53, respectively, with the second magnets 541 and the second coils 542 of the same group being arranged opposite each other.

[0234] The pivot portion configured to implement the movable connection between the second movable portion 51 and the fastening portion 57 may include a first ball 601 and a second ball 602. A portion of the first ball 601 is fastened to a fourth groove 5331 of the third support portion 533, and a portion of the first ball 601 exposed to the outside of the fourth groove 5331 may be received in a second groove 5712 provided in the third sidewall 571 and supported by an inner wall of the second groove 5712. A portion of the second ball 602 is fastened to a fifth groove 5332 of the third support portion 533, and a portion of the second ball 602 exposed to the outside of the fifth groove 5332 may be received in a third groove 5713 provided in the third sidewall 571 and supported by an inner wall of the third groove 5713.

[0235] When a preload is applied between the second movable part 53 and the fastening part 57, the third magnet 59 is fastened to the first groove 5711 provided in the third side wall 571. The magnetically conductive member 603 is disposed on the third support part 533 in a region corresponding to the first groove 5711. The third magnet 59 and the magnetically conductive member 603 are attracted to each other under the action of magnetic force.

[0236] In the embodiment of the present application, in order to reduce the degree of freedom of the voice coil motor in an unnecessary movement direction, the degree of freedom of the first movable part 51 may be limited by fitting an arcuate surface with a support groove, and / or the degree of freedom of the second movable part 53 may be limited by fitting two fulcrum elements with two grooves. In other words, the voice coil motor provided in the embodiment of the present application may have the structure shown in Figures 7 to 12 and / or the structure shown in Figures 13 to 19. This is not limited in the present application.

[0237] In the optical image stabilization assembly provided in the embodiment of the present application, the voice coil motor 5 drives the optical element 4 to rotate around the Y-axis via the first movable part 51, and drives the optical element 4 to rotate around the X-axis via the second movable part 53, and the degree of freedom of the optical element 4 to rotate around the X-axis is separated from the degree of freedom of the optical element 4 to rotate around the Y-axis, so that when the voice coil motor 5 performs vibration compensation in the X direction or the Y direction, the motion cross-interference in other directions is reduced and the image stabilization effect is improved.

[0238] It can be understood that because the first movable part is fastened to the optical element and drives and moves the optical element, the rotation or movement of the first movable part can be replaced with the rotation or movement of the optical element. Because the second movable part is connected to the first movable part and drives and moves the first movable part, the rotation or movement of the second movable part can be replaced with the rotation or movement of the first movable part or the rotation or movement of the optical element. In addition, the movement of the optical element, the movement of the first movable part, and the movement of the second movable part can all be considered to be the movement of the voice coil motor.

[0239] When the structure of the periscope compact camera module provided in the embodiments of the present application is applied to an electronic device, the electronic device can be made lighter, thinner, and smaller. In addition, since the periscope compact camera module does not need to protrude from the body of the electronic device, the protruding part of the compact camera module may not be easily damaged due to an accident during image capture.

[0240] An embodiment of the present application further provides an electronic device 1000. Figure 20 is a diagram of the control principle of the electronic device 1000 according to the present application.

[0241] 20 , the electronic device 1000 includes a gyroscope, a processing unit, and a compact camera module 800. The compact camera module 800 includes a voice coil motor 810 and an optical element 820. The gyroscope is configured to collect vibration information of the electronic device 1000 and transmit the vibration information to the processing unit. The processing unit is configured to control the voice coil motor 810 based on the vibration information. That is, the voice coil motor 810 rotates the optical element 820 in two degrees of freedom to perform vibration compensation. In this embodiment of the present application, the voice coil motor 810 may be the voice coil motor 5 described in the above embodiment, and the optical element 820 may be the optical element 4 described in the above embodiment.

[0242] Furthermore, the processing unit can control the voice coil motor 810 via the image stabilization chip of the voice coil motor 810. In this case, the processing unit can calculate vibration compensation information for the optical element 820 based on the vibration information and send the vibration compensation information to the image stabilization chip. The image stabilization chip is configured to control the drive current of the voice coil motor 810 (i.e., control the magnitude and direction of the direct current in the coil) based on the vibration compensation information, so that the voice coil motor 810 drives and rotates the optical element 820.

[0243] The electronic device 1000 further includes a housing and a display. The gyroscope and processing unit are disposed within the housing. The display and the compact camera module 800 are attached to the housing. The display is configured to display images captured by the compact camera module 800.

[0244] Optionally, the gyroscope is a micro electro mechanical system (MEMS) gyroscope.

[0245] Optionally, the housing may be a metal housing, for example, a metal such as a magnesium alloy or stainless steel, or may be, but is not limited to, a plastic housing, a glass housing, a ceramic housing, or the like.

[0246] Optionally, the display may be, but is not limited to, a light emitting diode (LED) display, a liquid crystal display (LCD), an organic light-emitting diode (OLED) display, or the like.

[0247] Optionally, the housing may further include other components such as, but not limited to, a battery, a flash, a fingerprint recognition module, an earphone, a circuit board, and a sensor.

[0248] Optionally, the electronic device 1000 may be a terminal device having a video or photo shooting function, such as a mobile phone, a tablet computer, a laptop computer, a video camera, a video recorder, a camera, an intelligent robot, an in-vehicle surveillance device, or another type of device having a video or photo shooting function.

[0249] Since the electronic device 1000 uses the voice coil motor 5 provided in the above-described embodiments, the electronic device 1000 also has technical effects corresponding to the technical effects of the voice coil motor 5. The details will not be described again in this specification.

[0250] The above description is merely a specific implementation form of the present application and does not limit the protection scope of the present application. Any variations or replacements that can be easily conceived by those skilled in the art within the technical scope disclosed in the present application shall fall within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims. [Explanation of symbols]

[0251] 100 Electronic device, 101 Housing, 102 Display, 103 Compact camera module, 104 Protective lens element, 200 Compact camera module, 201 Imaging light beam, 21 Optical element, 22 Lens group, 23 Image sensor, 24 Voice coil motor, 300 Optical image stabilization assembly, 3 Housing, 4 Optical element, 5 Voice coil motor, 41 First perpendicular surface, 42 Second perpendicular surface, 43 Inclined surface, 44 First connecting surface, 45 Second connecting surface, 51 First movable part, 52 First actuating part, 53 Second movable part, 54 Second actuating part, 55 First elastic member / first elastic element, 56 Second elastic member / second elastic element, 57 Fastening part, 511 First body, 512 First side wall, 513 Second side wall, 514 First fulcrum element, 5141 First arc surface, 5142; connecting surface, 5143; first positioning pin, 5144; second body, 521; first magnet, 522; first coil, 531; first support portion, 532; second support portion, 533; third support portion, 534; bearing table, 5341; first cutting surface, 5342; second cutting surface, 5343; third cutting surface, 5344; fourth cutting surface, 5345; fifth cutting surface, 5346; second positioning pin, 5347; third positioning pin, 541; second magnet, 542; second coil, 551; first end, 5511; second through hole, 552; second end, 5521; third through hole, 553; connecting end, 5531; first through hole, 561; third end, 562; fourth end, 563 Cantilever, 574 Bottom wall, 571 Third side wall, 572 Fourth side wall, 573 Fifth side wall, 5711 First groove, 5712 Second groove, 5713 Third groove, 5331 Fourth groove, 5332 Fifth groove, 5334 Third protrusion, 5335 Fourth protrusion, 5336 Second arcuate surface, 5337 Third arcuate surface, 58 Circuit board, 59 Third magnet, 601 First ball, 602 Second ball, 603 Magnetic conductive member, 800 Compact camera module, 810 Voice coil motor, 820 Optical element, 1000 Electronic device

Claims

1. A voice coil motor, A fastening part, a first movable part configured to fasten to an optical element, the optical element configured to adjust light incident in a first direction to be transmitted in a second direction, the second direction being perpendicular to the first direction; a first actuating part configured to drive the first movable part to rotate relative to the fastening part about a third direction, the third direction being perpendicular to the first direction and perpendicular to the second direction; a second movable part connected to the first movable part via a first elastic member, the second movable part being configured to support the first movable part; a second actuating portion configured to drive the second movable portion to rotate about the first direction relative to the fastening portion; Equipped with a bearing table is disposed on the second movable part, the bearing table including a support groove; a first fulcrum element is disposed on the first movable part, the first fulcrum element including a first arcuate surface, and the first movable part is supported on an inner wall of the support groove via the first arcuate surface; the first elastic member comprises a first connection portion, a second connection portion, and a deformation portion located between the first connection portion and the second connection portion, the first connection portion being fastened to the first fulcrum element, and the second connection portion being fastened to the bearing table; When the first actuating portion drives the first movable portion, the first arcuate surface rotates around the third direction within the support groove to limit the deformation direction of the deformation portion. Voice coil motor.

2. The voice coil motor according to claim 1 , wherein the rotation center and the mass center of the first movable part and the optical element in a connected state coincide with each other.

3. 3. The voice coil motor according to claim 1, wherein the support groove is a V-shaped groove or a circular arc groove.

4. 4. The voice coil motor according to claim 1, wherein there is a first preset distance in the first direction between a surface of the first fulcrum element fastened to the first connection portion and a surface of the bearing table fastened to the second connection portion, and the first preset distance is used by the first elastic member to apply a first preload to the first fulcrum element.

5. a first through hole is provided on the first connecting portion, a first positioning pin is arranged on the surface of the first fulcrum element fastened to the first connecting portion, and the first elastic member is sleeve-connected onto the first positioning pin through the first through hole; A voice coil motor as described in any one of claims 1 to 4, wherein a second through hole is provided on the second connection portion, a second positioning pin is arranged on the surface of the bearing table fastened to the second connection portion, and the first elastic member is sleeve-connected to the second positioning pin through the second through hole.

6. a table surface of the bearing table including a first cutting surface, a second cutting surface, a third cutting surface, a fourth cutting surface, and a fifth cutting surface connected in sequence in the second direction; the first cut surface and the fifth cut surface are located on a first plane perpendicular to the first direction, and the first cut surface and the fifth cut surface are used to fasten to the first connection portion; the second cutting surface and the fourth cutting surface are located on a second plane perpendicular to the first direction, the second plane being lower than the first plane in the first direction, and a distance between the second cutting surface and the first plane and a distance between the fourth cutting surface and the first plane are used to provide a deformation space for the deformation portion; 6. The voice coil motor according to claim 1, wherein the third cut surface is recessed toward a side of the second plane away from the first plane to form the support groove.

7. the voice coil motor includes two first fulcrum elements; the first movable portion includes a first side wall and a second side wall arranged opposite each other in the third direction, the second movable portion includes a first support portion and a second support portion arranged opposite each other in the third direction, the first support portion being located on a side of the first side wall away from the second side wall, and the second support portion being located on a side of the second side wall away from the first side wall; one of the two first fulcrum elements is arranged on a side of the first side wall facing the first support portion, the bearing table is arranged on a side of the first support portion facing the first side wall, and the first fulcrum element on the first side wall is supported by the bearing table on the first support portion; 7. A voice coil motor as described in any one of claims 1 to 6, wherein the other of the two first fulcrum elements is arranged on a side of the second side wall facing the second support portion, the bearing table is arranged on a side of the second support portion facing the second side wall, and the first fulcrum element on the second side wall is supported by the bearing table on the second support portion.

8. 8. The voice coil motor according to claim 1, wherein the first fulcrum element is a D-shaped shaft.

9. 9. The voice coil motor according to claim 1, wherein the first fulcrum element and the first movable part are integrally formed.

10. one of the second movable part and the fastening part is a first component, and the other of the second movable part and the fastening part is a second component; A second fulcrum element and a third fulcrum element arranged in the first direction are disposed on the first component, the second fulcrum element and the third fulcrum element are fastened to the second component, the second fulcrum element has a second arcuate surface, and the third fulcrum element has a third arcuate surface; a second groove and a third groove arranged in the first direction are provided on the second component, the second groove being used to accommodate at least a portion of the second fulcrum element, an inner wall of the second groove contacting the second arcuate surface, the third groove being used to accommodate at least a portion of the third fulcrum element, an inner wall of the third groove contacting the third arcuate surface; 10. The voice coil motor of claim 1, wherein when the second operating portion drives the second movable portion to rotate around the first direction, the second arcuate surface is supported by the inner wall of the second groove, and the third arcuate surface is supported by the inner wall of the third groove, thereby limiting the rotation of the second movable portion around the second direction.

11. 11. The voice coil motor according to claim 10, wherein a connecting line between the rotation center of the second arcuate surface and the rotation center of the third arcuate surface is parallel to the first direction.

12. 12. The voice coil motor of claim 10, wherein the second fulcrum element and the third fulcrum element are balls, or the second fulcrum element and the third fulcrum element are protrusions of the first component extending toward the second component.

13. the second groove is a tapered groove or a V-groove; and / or 13. The voice coil motor according to claim 10, wherein the third groove is a tapered groove or a V-shaped groove.

14. 14. The voice coil motor according to claim 13, wherein when the second groove and / or the third groove is a V-shaped groove, the extending direction of the V-shaped groove is parallel to the first direction.

15. 15. The voice coil motor of claim 13, wherein when the second groove and / or the third groove is a tapered groove, the tapered groove is used to limit movement of the second movable component in the first direction.

16. The voice coil motor according to any one of claims 10 to 15, further comprising a second elastic member, the second elastic member comprising a third connection portion, a fourth connection portion, and a cantilever located between the third connection portion and the fourth connection portion, the third connection portion being fastened to the fastening portion, and the fourth connection portion being fastened to the second movable portion.

17. 17. The voice coil motor of claim 16, wherein there is a second preset distance in the second direction between a surface of the fastening portion fastened to the third connecting portion and a surface of the second movable portion fastened to the fourth connecting portion, and the second preset distance is used by the second elastic member to apply a second preload to the second fulcrum element and the third fulcrum element.

18. the voice coil motor includes two second elastic elements; the second movable portion has the first support portion and the second support portion arranged opposite to each other in the third direction, and a third support portion configured to connect the first support portion and the second support portion, the third support portion being perpendicular to the second direction; the fastening portion comprises a fourth side wall and a fifth side wall arranged opposite each other in the third direction, and a third side wall configured to connect the fourth side wall and the fifth side wall, the third side wall being perpendicular to the second direction, the fourth side wall being located on a side of the second support portion away from the first support portion, and the fifth side wall being located on a side of the first support portion away from the second support portion; 18. The voice coil motor of claim 16 or 17, wherein an end surface of the fourth side wall remote from the third side wall in the second direction is connected to an end surface of the second support portion remote from the third support portion in the second direction via one of the two second elastic elements, and an end surface of the fifth side wall remote from the third side wall in the second direction is connected to an end surface of the first support portion remote from the third support portion in the second direction via the other of the two second elastic elements.

19. a first groove located between the second groove and the third groove is provided on the second component, the first groove being used to accommodate a magnetic element; 19. The voice coil motor according to claim 16, wherein a magnetically conductive member located between the second fulcrum element and the third fulcrum element is disposed on the first component, and a magnetic force between the magnetically conductive member and the magnetic element is used to apply a third preload to the second fulcrum element and the third fulcrum element.

20. A voice coil motor, A fastening part, a movable part configured to be fastened to an optical element, the optical element configured to condition light incident in a first direction to be transmitted in a second direction, the second direction being perpendicular to the first direction; an actuation portion configured to drive the movable portion to rotate about the first direction relative to the fastening portion; Equipped with one of the movable part and the fastening part is a first component, and the other of the movable part and the fastening part is a second component; A second fulcrum element and a third fulcrum element arranged in the first direction are disposed on the first component, the second fulcrum element and the third fulcrum element are fastened to the second component, the second fulcrum element has a second arcuate surface, and the third fulcrum element has a third arcuate surface; a second groove and a third groove arranged in the first direction are provided on the second component, the second groove being used to accommodate at least a portion of the second fulcrum element, an inner wall of the second groove contacting the second arcuate surface, the third groove being used to accommodate at least a portion of the third fulcrum element, an inner wall of the third groove contacting the third arcuate surface; when the actuating portion drives the movable portion to rotate about the first direction, the second arcuate surface is supported by the inner wall of the second groove, and the third arcuate surface is supported by the inner wall of the third groove, limiting the rotation of the movable portion about the second direction. Voice coil motor.

21. 21. The voice coil motor according to claim 20, wherein a connecting line between the rotation center of the second arc surface and the rotation center of the third arc surface is parallel to the first direction.

22. 22. The voice coil motor of claim 20 or 21, wherein the second fulcrum element and the third fulcrum element are balls, or the second fulcrum element and the third fulcrum element are protrusions of the first component extending toward the second component.

23. the second groove is a tapered groove or a V-groove; and / or 23. The voice coil motor according to claim 20, wherein the third groove is a tapered groove or a V-shaped groove.

24. 24. The voice coil motor according to claim 23, wherein when the second groove and / or the third groove is a V-shaped groove, the extension direction of the V-shaped groove is parallel to the first direction.

25. 25. The voice coil motor of claim 23 or 24, wherein when the second groove and / or the third groove is a tapered groove, the tapered groove is used to limit movement of the movable component in the first direction.

26. The voice coil motor according to any one of claims 20 to 25, further comprising an elastic member, the elastic member comprising a third connection portion, a fourth connection portion, and a cantilever located between the third connection portion and the fourth connection portion, the third connection portion being fastened to the fastening portion, and the fourth connection portion being fastened to the movable portion.

27. 27. The voice coil motor of claim 26, wherein there is a second preset distance in the second direction between a surface of the fastening portion fastened to the third connection portion and a surface of the movable portion fastened to the fourth connection portion, and the second preset distance is used by the elastic member to apply a second preload to the second fulcrum element and the third fulcrum element.

28. the voice coil motor comprises two elastic elements; the movable part has a first support part and a second support part arranged opposite to each other in a third direction, and a third support part configured to connect the first support part and the second support part, the third support part being perpendicular to the second direction, and the third direction being perpendicular to the first direction and perpendicular to the second direction; the fastening portion comprises a fourth side wall and a fifth side wall arranged opposite each other in the third direction, and a third side wall configured to connect the fourth side wall and the fifth side wall, the third side wall being perpendicular to the second direction, the fourth side wall being located on a side of the second support portion away from the first support portion, and the fifth side wall being located on a side of the first support portion away from the second support portion; 28. The voice coil motor of claim 26 or 27, wherein an end surface of the fourth side wall remote from the third side wall in the second direction is connected to an end surface of the second support portion remote from the third support portion in the second direction via one of the two elastic elements, and an end surface of the fifth side wall remote from the third side wall in the second direction is connected to an end surface of the first support portion remote from the third support portion in the second direction via the other of the two elastic elements.

29. a first groove located between the second groove and the third groove is provided on the second component, the first groove being used to accommodate a magnetic element; 29. The voice coil motor of claim 26, wherein a magnetically conductive member located between the second fulcrum element and the third fulcrum element is disposed on the first component, and a magnetic force between the magnetically conductive member and the magnetic element is used to apply a third preload to the second fulcrum element and the third fulcrum element.

30. 30. An optical image stabilization assembly comprising: an optical element; and a voice coil motor according to any one of claims 1 to 29, wherein the optical element is fastened to the voice coil motor, the optical element configured to adjust light incident in a first direction to be transmitted in a second direction, and the voice coil motor configured to drive and rotate the optical element.

31. 31. A compact camera module comprising: a lens group; an image sensor; and the optical image stabilization assembly of claim 30, wherein the lens group is configured to process light incident from the optical element and then project the processed light onto the image sensor.

32. 32. An electronic device comprising: a gyroscope; a processing unit; and the compact camera module of claim 31, wherein the gyroscope is configured to collect vibration information of the electronic device and transmit the vibration information to the processing unit, and the processing unit is configured to control the voice coil motor to drive the optical element based on the vibration information and perform vibration compensation.

Images