Camera module and electronic device

Abstract

Provided in the embodiments of the present application are a camera module and an electronic device. The camera module comprises: a base, a first support, a second support, a lens assembly, a variable aperture, a first driving mechanism, a second driving mechanism and a third driving mechanism. The first support and the second support are both arranged on the base, and the second support is connected to the base by means of an SMA cable. The first support is of a circular structure that forms a hollow cavity, and the lens assembly is arranged inside the cavity and fixed to the first support, the optical axis of the lens assembly being parallel to the central axis of the cavity. The variable aperture is provided on the side of the lens assembly away from the base, the second support is sleeved on the outer side of the first support, and the first driving mechanism drives the first support and the lens assembly to move along the optical axis of the lens assembly. The second driving mechanism is connected to the base and the second support, and the second driving mechanism drives the first support, the second support and the lens assembly to move along the plane perpendicular to the optical axis of the lens assembly.

Description

Camera modules and electronic equipment

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on February 26, 2024, with application number 202410211716.X and application name “Camera module and electronic device”, and the Chinese patent application filed with the State Intellectual Property Office on March 29, 2024, with application number 202410385559.4 and application name “Camera module and electronic device”, all contents of which are incorporated by reference into this application. Technical Field

[0002] The embodiments of the present application relate to the field of semiconductors, and in particular to a camera module and electronic equipment. Background Art

[0003] Currently, electronic devices such as mobile phones, tablets, and personal computers (PCs) are generally equipped with camera modules for taking photos and videos. To ensure clear images, automatic focusing (AF) and optical image stabilization (OIS) are required. The camera module consists of an optical lens assembly and a base. The camera motor is used to drive the optical lens assembly relative to the base to achieve automatic focusing and optical image stabilization.

[0004] With the popularization of electronic devices, users have increasingly higher requirements for the aesthetics of electronic devices, which has led to the gradual development of electronic devices towards thinner shapes.

[0005] However, in order to enable electronic devices to have better shooting functions, the stroke of the optical lens assembly is increased, which affects the thickness of the electronic device.

[0006] Summary of the Invention

[0007] The present application provides a camera module and an electronic device, which solves the problem that a long-stroke camera module affects the thickness of the electronic device.

[0008] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions:

[0009] In one aspect of the present application, a camera module is provided, which can be used in electronic devices with photo and video recording functions. The camera module includes: a base, a first bracket, a second bracket, a lens assembly, a variable aperture, a first driving mechanism, a second driving mechanism and a third driving mechanism; the first bracket and the second bracket are both arranged on the base, and the second bracket is connected to the base through an SMA wire; the first bracket is an annular structure, forming a hollow cavity, the lens assembly is arranged in the cavity and fixed to the first bracket, and the optical axis of the lens assembly is parallel to the central axis of the cavity; the variable aperture is arranged on a side of the lens assembly away from the base, and the third driving mechanism is connected to the variable aperture; the second bracket is sleeved on the outside of the first bracket; the first driving mechanism connects the first bracket and the second bracket, and the first driving mechanism drives the first bracket and the lens assembly to move along the optical axis of the lens assembly; the second driving mechanism connects the base and the second bracket, and the second driving mechanism drives the first bracket, the second bracket and the lens assembly to move along a plane perpendicular to the optical axis of the lens assembly; the second driving mechanism includes an SMA wire, and the second bracket is connected to the base through an SMA wire. Therefore, the second driving mechanism of the camera module is an SMA driving mechanism. The SMA driving mechanism has a simple structure and occupies a small space. It can compress the volume of the camera driving motor and realize the miniaturization of the camera module.

[0010] In an optional embodiment, the lens assembly includes a first side surface and a second side surface, wherein the curvature of the first side surface is smaller than that of the second side surface. Thus, the circular lens assembly can be cut to form the first side surface. The cut lens assembly occupies less space, further miniaturizing the camera module.

[0011] In an optional embodiment, the first side surface is a plane surface, and the second side surface is an arc surface, thereby further reducing the space occupied by the lens assembly.

[0012] In an optional embodiment, the shape of the first bracket is adapted to the shape of the lens assembly, thereby reducing the space occupied by the first bracket and further miniaturizing the camera module.

[0013] In an optional embodiment, the camera module further includes: an elastic member, the elastic member is arranged between the base and the second bracket, the elastic member is used to give the second bracket and the lens assembly an elastic force to move from the first position to the second position, the direction from the first position to the second position is along the optical axis of the lens assembly, the first position is closer to the base than the second position, the first driving mechanism drives the second bracket and the lens assembly to move along the optical axis of the lens assembly between the second position and a third position, and the second position is between the first position and the third position. Thus, the stroke of the first bracket carrying the lens assembly not only includes the focusing stroke between the second position and the third position, but also includes the elastic member reset stroke between the first position and the second position, that is, the first bracket carrying the lens assembly moves between the first position and the third position, and the lens assembly stroke of the present application is larger than the focusing stroke between the second position and the third position.

[0014] In one optional embodiment, the elastic member is fixed to the first bracket. When the second bracket and the lens assembly are in the first position, the second bracket contacts the elastic member, causing the elastic member to deform, generating an elastic force directed from the first position to the second position. Thus, the elastic member is disposed between the first bracket and the base. When the first bracket and the lens assembly are in the first position, the elastic member is compressed, causing the elastic member to generate the elastic force.

[0015] In an optional embodiment, when the second bracket and the lens assembly move between the second position and the third position, the second bracket separates from the elastic member. Thus, when the focus drive mechanism drives the first bracket and the lens assembly to move along the optical axis of the lens assembly to achieve autofocus, the elastic member does not exert an elastic force on the first bracket and the lens assembly.

[0016] In an optional embodiment, the elastic member includes a first ear and a second ear, and an elastic section connected between the first ear and the second ear, the first ear and the second ear are both fixed on the first bracket, and the connecting end extends to the side of the second bracket close to the base.

[0017] In an optional embodiment, the camera module includes a slide bar connected to the second bracket, and a slide groove provided on the first bracket, with the slide bar slidably connected to the slide groove. Thus, the axial direction of the first slide bar is aligned with the optical axis of the lens assembly, the first slide bar is fixed relative to the first bracket, and the first bracket is slidably connected to the first slide bar; when the first bracket and the lens assembly move between the first position and the third position, the first bracket slides along the axial direction of the first slide bar.

[0018] Since the first bracket is slidably engaged with the first sliding rod, the first bracket carrying the lens assembly can slide along the first sliding rod. Therefore, even if the stroke of the first bracket and the lens assembly is large, or the driving force that drives the first bracket and the lens assembly to move is large, the movement stability of the lens assembly and the first bracket is also high, reducing the risk of the first bracket and the lens assembly deviating from the optical axis.

[0019] In an optional embodiment, the camera module further includes a first magnetic component configured to generate an attractive force between the first bracket and the slide bar. Thus, when the first bracket and the lens assembly move along the optical axis of the lens assembly, the first bracket slides axially along the first slide bar under the attraction.

[0020] When the first bracket carrying the lens assembly moves relative to the first bracket along the optical axis of the lens assembly, in order to make the first bracket slide stably along the sliding rod, in this implementation, a first magnetic component is set, and the first magnetic component can generate an attractive force between the first bracket and the sliding rod. Under the action of this attractive force, the first bracket will slide along the sliding rod.

[0021] In an optional embodiment, the first magnetic component includes a magnet, which is fixed on the first bracket and arranged close to the first sliding rod, and an attractive force is generated between the magnet and the first sliding rod.

[0022] When the first bracket carrying the lens assembly moves relative to the first bracket along the optical axis of the lens assembly, in order to make the first bracket slide stably along the sliding rod, in an embodiment of the present application, a magnet is set to generate an attractive force (which can be called an axis holding force) between the magnet and the sliding rod, so that the first bracket can hold the sliding rod tightly during the movement and slide stably along the sliding rod, thereby improving the movement stability.

[0023] In an optional embodiment, the first drive mechanism includes a magnet and a coil opposite to the magnet, wherein one of the magnet and the coil is disposed on the second bracket and the other is disposed on the first bracket. Thus, electromagnetic induction is generated between the coil and the magnet in the focus drive mechanism.

[0024] In an optional embodiment, one of the first magnet and the first coil is disposed on the first bracket, and the other is disposed on the first bracket; the first slide bar and the magnet are disposed beside the first magnet, with the magnet being further away from the first magnet than the first slide bar. Thus, a magnetic attraction can be generated between the slide bars. To reduce the effect of electromagnetic induction and magnetic attraction, in this example, the magnet is disposed further away from the magnet in the drive mechanism than the slide bar.

[0025] In an optional embodiment, the focus drive mechanism includes a first magnet and a first coil facing the first magnet, and a second magnet and a second coil facing the second magnet, and the first magnet and the second magnet are symmetrically arranged about the optical axis of the lens assembly; the camera drive motor also includes a second slide bar; the first slide bar is arranged next to the first magnet, and the second slide bar is arranged next to the second magnet, and the first slide bar and the second slide bar are symmetrically arranged about the optical axis of the lens assembly.

[0026] In an optional embodiment, the first bracket has a sliding groove that is slidably matched with the first sliding rod, and when the first bracket slides along the axial direction of the first sliding rod, the sliding rod contacts the sliding groove.

[0027] This facilitates the contact between the slide bar and the slide groove, allowing the first bracket to slide stably along the slide bar.

[0028] In an optional embodiment, the camera module includes: a first groove, a second groove, and a ball bearing. The first groove is provided on the base, the second groove is provided on the second bracket, the first groove and the second groove are arranged opposite each other, and the ball bearing is provided within the area enclosed by the first and second grooves. Thus, a plurality of ball bearings are provided between the first bracket and the base. When the anti-shake drive mechanism drives the first bracket and the second bracket to move along a plane perpendicular to the optical axis, the first bracket slides along the plurality of ball bearings.

[0029] By utilizing the plurality of balls arranged between the first bracket and the base, the friction coefficient between the first bracket and the base can be reduced, thereby improving the camera quality.

[0030] In an optional embodiment, the plurality of balls include a first group of balls, a second group of balls and a third group of balls, any one of the first group of balls, the second group of balls and the third group of balls includes a plurality of balls, and the first group of balls, the second group of balls and the third group of balls are arranged at intervals along the circumference of the base.

[0031] The connecting line of the first group of balls, the second group of balls and the third group of balls forms a triangle. In this way, on the basis of reducing the friction coefficient of the movement of the first bracket, the stability of the triangle can also be improved.

[0032] In an optional embodiment, the camera module further includes: a second magnetic component, the second magnetic component being disposed between the base and the second bracket, wherein the second bracket and the ball are in contact under the magnetic attraction of the second magnetic component, wherein when the second bracket and the ball are in contact, a gap exists between the second bracket and the base. Thus, by disposing the second magnetic component between the base and the first bracket, when the first bracket moves relative to the base, the magnetic attraction of the second magnetic component reduces the risk of the first bracket tilting under its own weight.

[0033] In an optional embodiment, the second magnetic component includes a magnet and a magnetic sheet, one of the magnet and the magnetic sheet is arranged on the base, and the other is arranged on the first bracket.

[0034] For example, a mounting groove may be provided on the base, and a magnet may be provided in the mounting groove, thereby compressing the thickness of the entire camera drive motor.

[0035] In an optional embodiment, the plurality of balls include a plurality of groups of balls, the plurality of groups of balls are spaced apart along the circumference of the base, and a second magnetic component is provided between two adjacent groups of balls.

[0036] In an optional embodiment, the second drive mechanism includes a movable jaw and a fixed jaw, the SMA wire connecting the movable jaw and the fixed jaw, the movable jaw being fixed to the first bracket, and the fixed jaw being fixed to the base. Each set of drive units includes a movable jaw, a fixed jaw, and an SMA wire, with the SMA wire connecting one movable jaw and one fixed jaw. Along the circumference of the base, the movable jaws of two adjacent sets of drive units are positioned close together and connected, while the fixed jaws of two adjacent sets of drive units are positioned close together and separated.

[0037] In an optional implementation, the anti-shake drive mechanism includes four groups of drive units, so that the drive mechanism is a four-wire SMA drive mechanism.

[0038] In an optional embodiment, the second bracket includes: a main body having a chamber therein, the first bracket being disposed within the chamber, and the first drive mechanism being disposed between the main body and the first bracket; and an extension portion disposed on a side of the main body proximal to the base, the extension portion extending circumferentially away from the main body along the outer edge of the main body, a gap being defined between the extension portion and the base, and the second drive mechanism being disposed within the gap. Thus, there is some space outside the main body, which can be utilized to accommodate other structural components of the camera module.

[0039] In an optional embodiment, the camera module further includes a module circuit board and an electrical connection structure; the first drive mechanism, the second drive mechanism and the third drive mechanism are all electrically connected to the circuit board of the camera drive motor through the electrical connection structure.

[0040] In an optional embodiment, the electrical connection structure includes: a first FPC, which is arranged on the second bracket and is electrically connected to the module circuit board; a first conductive lead, which is arranged on the second bracket, the first end of the first conductive lead is electrically connected to the first driving mechanism, and the second end of the first conductive lead is electrically connected to the first FPC; a first spring arm, the first end of the first spring arm is connected to the second bracket, and the second end of the first spring arm is fixed to the base; a second conductive lead, which is arranged on the base, and the second driving mechanism is electrically connected to the module circuit board through the second conductive lead; a grounding lead, which is arranged on the base, one end of the grounding lead is electrically connected to the second end of the first spring arm, and the other end of the grounding lead is electrically connected to the module circuit board of the camera module; a second spring arm, the first end of the second spring arm is electrically connected to the variable aperture, and the second end of the second spring arm is fixed to the first bracket.

[0041] In an optional embodiment, a first driving chip is provided on the module circuit board, and the first driving mechanism is electrically connected to the first FPC through the first conductive lead, and is electrically connected to the first driving chip through the first FPC.

[0042] In an optional embodiment, the second driving mechanism is electrically connected to the first driving chip through the second conductive lead.

[0043] In an optional embodiment, the camera module further includes a position sensor for detecting the position of the second bracket relative to the base, the position sensor being electrically connected to the first driver chip via the first FPC. Thus, the focus position can be determined by detecting the sliding position of the first bracket using the position sensor.

[0044] In an optional embodiment, the electrical connection structure also includes: a third conductive lead, which is arranged in the second bracket, and the variable aperture includes: a second driving chip and a second FPC, the third driving mechanism is electrically connected to the second driving chip, the second driving chip is electrically connected to the second FPC, the first end of the second spring arm is connected to the second FPC, and the second end of the second spring arm is electrically connected to the first FPC through the third conductive lead, so that the second driving chip is electrically connected to the module circuit board through the second FPC, the second spring arm, the third conductive lead and the first FPC.

[0045] In an optional embodiment, the variable aperture further includes: a fixed base having a first light-transmitting hole; a rotating bracket located within the fixed base and rotatably connected to the fixed base; the rotating bracket is arranged around the periphery of the first light-transmitting hole; a plurality of blades disposed on the rotating bracket, the blades being slidably connected to the rotating bracket and rotatably connected to the fixed base; the plurality of blades are distributed in an annular manner to form an aperture, and the aperture is connected to the first light-transmitting hole; the third driving mechanism includes: a magnet assembly disposed on a side of the rotating bracket facing away from the blades and connected to the rotating bracket; and a coil disposed on a side of the magnet assembly facing the fixed base. The coil is disposed on a side of the magnet assembly facing the fixed base.

[0046] In an optional embodiment, the variable aperture includes a fixed seat, a rotating bracket, a plurality of blades and at least one third driving mechanism. The above-mentioned third driving mechanism includes a magnet assembly and a coil. The fixed seat has a first light-transmitting hole. The rotating bracket is located in the fixed seat, and the rotating bracket is rotatably connected to the fixed seat. The rotating bracket is arranged around the first light-transmitting hole. A plurality of blades are arranged on the rotating bracket, and the blades are slidably connected to the rotating bracket and rotatably connected to the fixed seat. The plurality of blades are distributed in a ring shape to surround the aperture hole, and the aperture hole is connected to the first light-transmitting hole. In the above-mentioned third driving mechanism, the magnet assembly is arranged on the side of the rotating bracket away from the blades, and the magnet assembly is connected to the rotating bracket. The coil is arranged on the side of the magnet assembly facing the fixed seat.

[0047] In summary, the rotating bracket is located within the fixed base and is rotationally connected to the fixed base. Furthermore, the blades are slidably connected to the rotating bracket and rotationally connected to the fixed base. In this case, when the rotating bracket rotates relative to the fixed base, it can simultaneously drive the blades to slide relative to the rotating bracket and rotate relative to the fixed base. Based on this, the aperture size of the apertures defined by the multiple annularly distributed blades can be changed as the rotating bracket rotates, thereby adjusting the aperture size of the apertures. Furthermore, to drive the rotating bracket to rotate, as described above, the third driving mechanism includes a magnet assembly and a coil. The magnet assembly is disposed on the side of the rotating bracket facing away from the blades. The coil is disposed on the side of the magnet assembly facing the fixed base. In this case, by energizing the coil, a magnetic field is generated between the coil and the magnet assembly. This magnetic field drives the magnet assembly, disposed on the mover (i.e., the rotating bracket), to move relative to the coil. Furthermore, the rotating bracket and the fixed base are rotationally electrically connected, thereby enabling the magnet assembly to drive the rotating bracket to rotate relative to the fixed base.

[0048] Thus, in the variable aperture provided by the embodiments of the present application, since the magnet assembly is disposed on the rotating bracket serving as the mover, the variable aperture can be a moving magnet type variable aperture. Consequently, the coil requiring power does not need to be disposed on the mover (i.e., a moving coil type variable aperture), thereby simplifying the electrical connection structure of the variable aperture. Furthermore, the present application utilizes only the rotating bracket serving as the mover and the fixed base serving as the stator to rotate, thereby driving the movement of multiple blades to adjust the aperture diameter. This reduces the number of components required to adjust the aperture diameter of the variable aperture and simplifies the structure of the variable aperture. Furthermore, locating the rotating bracket within the fixed base reduces the thickness of the variable aperture. Furthermore, locating the magnet assembly on the side of the rotating bracket facing away from the blades and the coil on the side of the magnet assembly facing the fixed base reduces the lateral area (perpendicular to the optical axis) of the variable aperture compared to solutions in which the magnet and coil are disposed around the rotating bracket, thereby reducing the size of the variable aperture. In this case, by simplifying the structure of the variable aperture and reducing the thickness and lateral area of ​​the variable aperture, it is beneficial to the miniaturization design of the entire camera module, thereby improving the integration of the electronic device.

[0049] Furthermore, when the image sensor in a camera module with a variable aperture has a larger target area, the size of the camera module's lens assembly along the optical axis is larger. Therefore, for image sensors with larger target areas, the variable aperture provided by the embodiments of the present application can effectively reduce the size of the entire camera module.

[0050] In an optional embodiment, the above-mentioned magnet assembly may include multiple magnets, and the above-mentioned multiple magnets may be a Halbach array structure. The surface of the magnet assembly with the above-mentioned Halbach array structure facing the coil has a larger magnetic field strength, so that a very small current can drive the rotating bracket connected to the magnet assembly, thereby achieving the purpose of reducing power consumption.

[0051] In an optional embodiment, the second FPC is arranged on the side of the fixed seat away from the blade, and the second FPC is connected to the fixed seat. The coil passes through the fixed seat and is arranged on the side of the second FPC facing the rotating bracket, and the coil is connected to the second FPC. In this way, by arranging the second FPC on the side of the fixed seat away from the blade, compared with the solution of arranging the second FPC in an arc shape around the movable element, the second FPC can be arranged into a flat plate structure, thereby simplifying the manufacturing process of the second FPC. In addition, the coil is arranged through the fixed seat so that the thickness of the coil overlaps with part of the thickness of the fixed seat, which is conducive to reducing the thickness of the variable aperture. In addition, the coil that needs to be powered is arranged on the side of the second FPC facing the rotating bracket, and the coil is connected to the second FPC, so that the coil can be arranged opposite to the above-mentioned magnet assembly, and the coil can be powered directly through the metal grounding trace on the second FPC, thereby simplifying the electrical connection structure of the variable aperture.

[0052] In an optional embodiment, the fixing seat includes a first plastic part and a first metal bracket. The first metal bracket is embedded in the first plastic part, and the first metal bracket and the first plastic part are connected to form a first integral structural part. In this way, the above-mentioned first integral structural part can be formed by an embedded injection molding process. Since the fixing seat has the first metal bracket, the mechanical strength of the fixing seat can be increased. When the fixing seat is hit during the reliability test of the variable aperture (rolling or drop test, etc.) and the user's use, the probability of damage to the fixing seat can be reduced, thereby achieving the purpose of extending the service life of the product. In addition, the above-mentioned first metal bracket can also be grounded on the FPC. For example, the first metal bracket can be electrically connected to the copper leakage area on the FPC by conductive glue to achieve grounding of the first metal bracket, thereby achieving the purpose of reducing electromagnetic interference.

[0053] In one optional embodiment, the first plastic member includes a first hollowed-out area, which exposes a portion of the surface of the first metal bracket. This surface is used to create the product identification code. This allows the product identification code, representing product-related information, to be created directly on the first metal bracket, eliminating the need for a separate magnetic conductive sheet for creating the product identification code, thereby simplifying the manufacturing process.

[0054] In one optional embodiment, the coil is mounted on a fixed base and directly connected to the fixed base. The fixed base, acting as a stator, remains stationary relative to the rotating bracket during the aperture change of the variable aperture. This allows the coil mounted on the fixed base to remain stationary relative to the magnet assembly mounted on the rotating bracket, thereby ensuring that the variable aperture is a moving magnet type variable aperture.

[0055] In an optional embodiment, the fixing base includes a first plastic part, a first metal bracket, a metal grounding trace, a metal signal trace, a metal grounding terminal and a metal signal terminal. The first metal bracket, the metal grounding trace and the metal signal trace are embedded in the first plastic part, and the metal signal trace, the metal grounding trace, the first metal bracket and the first plastic part are connected to form a first integral structural part. As described above, the above-mentioned first integral structural part can be formed by an embedded injection molding process. Among them, the technical effect of the first metal bracket is the same as described above and will not be repeated here. In addition, since the fixing base includes a metal grounding trace, a metal signal trace, a metal grounding terminal and a metal signal terminal, the metal grounding trace, the metal signal trace, the metal grounding terminal and the metal signal terminal can replace the above-mentioned FPC. The metal grounding terminal is connected to the metal grounding trace, so that the first metal bracket can be electrically connected to the module circuit board through the metal grounding trace and the metal grounding terminal to achieve the function of grounding the first metal bracket. In addition, the above-mentioned variable aperture may also include a second driver chip for controlling the rotation position of the rotating shaft bracket. The second driver chip is electrically connected to the metal signal trace. Since the metal signal terminal is connected to the metal signal trace, the second driver chip is electrically connected to the module circuit board through the metal signal terminal and the metal signal trace, so that the processor can transmit the control signal to the above-mentioned second driver chip through the module circuit board.

[0056] In an optional embodiment, the fixed base includes a base plate, a boss, and side plates. The boss is disposed on the base plate, and a first light-transmitting hole extends through the boss and the base plate. The side plates are disposed on the base plate, surrounding the periphery of the boss. The side plates, the side walls of the boss, and the base plate define a first mounting groove, with at least a portion of the rotating bracket positioned within the first mounting groove. In this manner, the first mounting groove defined by the side plates, the side walls of the boss, and the base plate allows the rotating bracket to be positioned within the fixed base, thereby allowing the thickness of the rotating bracket and the fixed base to overlap, thereby reducing the thickness of the variable aperture.

[0057] In an optional embodiment, the rotating bracket includes an annular portion and a lug. The annular portion is located in the first mounting groove and is arranged around the periphery of the boss, and the annular portion is slidably connected to the blade. The lug is arranged on the side wall of the annular portion and is connected to the annular portion. The magnet assembly is arranged on the lug, and the magnet assembly is connected to the lug. A first opening is provided on the side panel, and the first opening passes through the side panel in a direction perpendicular to the bottom panel, and the first opening is connected to the first mounting groove, and the lug is located in the first opening. The annular portion can serve as the main body of the rotating bracket and be located in the first mounting groove and be slidably connected to the blade. In addition, the lug is embedded in the first opening on the side panel and is connected to the magnet assembly, so that the magnet assembly can be supported.

[0058] In an optional embodiment, a travel gap may be provided between the sidewall of the first opening and the lug. Thus, along the rotation direction of the rotatable bracket, the opening length of the first opening may be the rotational travel of the rotatable bracket. When the rotatable bracket abuts the sidewall of the first opening, the rotatable bracket has rotated to its maximum travel.

[0059] In an optional embodiment, the third driving mechanism may further include a first magnetic conductive sheet, which may be disposed on the side of the bottom plate of the fixed seat facing the rotating bracket, and the first magnetic conductive sheet is used to adsorb the magnet assembly. The magnetic conductive sheet, also known as a magnetic attraction sheet, has high magnetic permeability, low resistivity, and low iron loss. Based on this, the first magnetic conductive sheet can adsorb the magnet assembly along the thickness direction of the variable aperture. In addition, the vertical projection of the first opening on the side wall of the boss overlaps with the vertical projection of the first magnetic conductive sheet on the side wall of the boss. As can be seen from the above, along the rotation direction of the rotating bracket, the opening length of the first opening can be the rotation stroke of the rotating bracket. Therefore, when the vertical projection of the first opening on the side wall of the boss overlaps with the vertical projection of the first magnetic conductive sheet on the side wall of the boss, the first magnetic conductive sheet can be disposed within the stroke range of the rotating bracket. In this way, when the rotating bracket rotates, the first magnetic conductive sheet adsorbs the magnet assembly along the thickness direction of the variable aperture, which can reduce the separation of the rotating bracket and the fixed seat during the rotation of the camera module and improve the reliability of the variable aperture.

[0060] Furthermore, by adjusting the number, position, and spacing of the first magnetically conductive sheets relative to the magnet assembly, the adsorption force between the first magnetically conductive sheets and the magnet assembly can be adjusted. In this case, when the adsorption force between all the first magnetically conductive sheets in the variable aperture and the magnet assembly reaches approximately 10 times the weight of the rotating bracket and the magnet assembly, the friction between the rotating bracket and the fixed base can be increased. In this case, when the rotating bracket rotates to drive the aperture formed by the multiple blades to reach an aperture position, such as the maximum aperture position, the high friction between the rotating bracket and the fixed base makes it difficult for the rotating bracket to rotate further relative to the fixed base. Consequently, power to the coil can be terminated, and the position of the rotating bracket and the fixed base is relatively fixed, achieving the purpose of self-locking the aperture. This allows the user to take photos or videos in a fixed scene without changing the aperture, and because the aperture is self-locking and the coil is powered off, power consumption can be reduced.

[0061] In an optional embodiment, a second mounting groove is provided in the bottom portion of the base plate that serves as the bottom of the first mounting groove, and the first magnetic conductive sheet is located in the second mounting groove. The second mounting groove is provided at the end of the coil facing the boss. By providing the second mounting groove on the base plate, the first magnetic conductive sheet located in the second mounting groove can be embedded in the base plate of the fixed seat, so that the thickness of the first magnetic conductive sheet coincides with the thickness of part of the base plate, which is beneficial to reducing the thickness of the variable aperture. In addition, by providing the second mounting groove at the end of the coil facing the boss, the first magnetic conductive sheet located in the second mounting groove can be located at the end of the coil facing the boss, and is closer to the magnetic attraction component.

[0062] In an optional embodiment, the third drive mechanism includes two first magnetic conductive sheets, with the end of the coil facing the boss positioned between the two first magnetic conductive sheets. Increasing the number of first magnetic conductive sheets can improve the attraction between all first magnetic conductive sheets and the magnetic assembly, thereby facilitating the aforementioned self-locking of the aperture when the coil is powered off.

[0063] In an optional embodiment, the side wall of the boss includes a first semi-ring side wall and a second semi-ring side wall that are connected. In addition, the variable aperture further includes a second magnetic conductive sheet and a first rolling element. The second magnetic conductive sheet is arranged on the side wall of the first semi-ring, and the second magnetic conductive sheet is used to be adsorbed with the magnet assembly. The vertical projection of the first opening on the side wall of the first semi-ring overlaps with the vertical projection of the first magnetic conductive sheet on the side wall of the first semi-ring. The first rolling element is arranged between the rotating bracket and the base plate, and the first rolling element is located on the side where the second semi-ring side wall is located. The rotating bracket and the fixed seat are in contact with the first rolling element, and the rotating bracket is rotatably connected to the fixed seat through the first rolling element.

[0064] In this way, since the second magnetic conductive sheet is disposed on the side wall of the first semi-ring, when the second magnetic conductive sheet is attracted to the magnet assembly, the rotating bracket will move toward the location of the second semi-ring side wall of the fixed seat. Since the first rolling element is located on the side where the second semi-ring side wall is located, the rotating bracket and the fixed seat can contact the first rolling element, that is, the first rolling element, the rotating bracket, and the fixed seat are all in a zero-matched state. In this case, when the rotating bracket is rotatably connected to the fixed seat via the first rolling element, since the rotating bracket and the fixed seat can contact the first rolling element, the rotating bracket can always rest on the first rolling element during rotation and rotate relative to the fixed seat. This can improve the stability of the rotating bracket during rotation and the consistency of the rotating bracket when rotating to various angles, thereby improving the reliability of the product.

[0065] In an optional embodiment, the first rolling element may include a ball or a roller. Alternatively, the first rolling element may include multiple balls or a plurality of balls. For example, if the first rolling element includes multiple balls, the multiple balls may be arranged along the thickness direction of the variable aperture.

[0066] In an optional embodiment, the variable aperture iris further includes a second rolling element. The second rolling element can be disposed between the rotating bracket and the base plate, with the second rolling element located on the side of the first semi-ring. An adjustable gap H1 is defined between the second rolling element and the rotating bracket, with the range of 30 μm ≤ H1 ≤ 70 μm. As can be seen from the above description, when the second magnetic conductive sheet is attracted to the magnet assembly, the rotating bracket moves toward the location of the second semi-ring side wall of the fixed base. In this case, the second rolling element located on the side of the first semi-ring side wall can have the aforementioned adjustable gap H1 between the rotating bracket and the rotating bracket. In this manner, during reliability testing (such as rolling or drop testing) or user use of the variable aperture iris, if the rotating bracket undergoes significant displacement in the horizontal plane (perpendicular to the optical axis of the variable aperture), the side of the rotating bracket proximal to the second rolling element can contact the second rolling element, causing the second rolling element to limit further displacement of the rotating bracket, thereby reducing the amount of displacement of the rotating bracket. This prevents the large displacement of the rotating bracket from pulling on the multiple blades slidably connected to the rotating bracket, potentially causing damage to the blades.

[0067] In an optional embodiment, the second rolling element may include a ball or a roller. Alternatively, the second rolling element may include multiple balls or a plurality of balls. For example, if the second rolling element includes multiple balls, the multiple balls may be arranged along the thickness direction of the variable aperture.

[0068] In one optional embodiment, the variable aperture iris includes two drive assemblies, two first rolling elements, and two second rolling elements. The two drive assemblies are a first drive assembly and a second drive assembly, respectively. The first drive assembly is positioned on the side of the first semi-ring where the sidewall is located, and the second drive assembly is positioned on the side of the second semi-ring where the sidewall is located. The first drive assembly is positioned between the two second rolling elements, and the second drive assembly is positioned between the two first rolling elements. Thus, by positioning the first drive assembly on the side of the boss where the first semi-ring where the sidewall is located, and the second drive assembly on the side where the second semi-ring where the sidewall is located, the rotating bracket can be subjected to uniform force during rotation. Furthermore, positioning the second drive assembly between the two first rolling elements and increasing the number of first rolling elements allow the rotating bracket to contact the first rolling elements on both sides of the first drive assembly, further improving the consistency, stability, and reliability of the movement. Furthermore, positioning the first drive assembly between the two second rolling elements and increasing the number of second rolling elements further limits the displacement of the rotating bracket during reliability testing (such as rolling or drop testing) and user use of the variable aperture iris, effectively reducing the amount of displacement of the rotating bracket.

[0069] In an optional embodiment, the rotating bracket includes a second plastic part and a second metal bracket. The second metal bracket is embedded in the second plastic part and connected to the second plastic part to form a second integral structural member. In this way, the second integral structural member can be formed through an embedded injection molding process. The inclusion of the second metal bracket in the rotating bracket increases the mechanical strength of the rotating bracket, reducing the likelihood of damage to the rotating bracket during reliability testing of the variable aperture (such as rolling or drop testing) and user use, thereby extending the product's service life. In addition, the magnet assembly is connected to the second metal bracket and attracted to it. In this way, for example, glue can be applied to the side of the second metal bracket facing the magnet assembly to connect the magnet assembly to the second metal bracket. Furthermore, since the second metal bracket can be attracted to the magnet assembly, the reliability of the connection between the assembly and the second metal bracket is increased. Furthermore, the need for a separate magnetic conductive sheet for connecting the rotating bracket to the magnet assembly is avoided, thereby simplifying the manufacturing process.

[0070] In an optional embodiment, the variable aperture further includes a cover plate, which is arranged on the side of the plurality of blades facing away from the rotating bracket, and the cover plate is covered on the fixed base. The cover plate includes a third plastic part, a third metal bracket, and a first gasket. The third metal bracket is embedded in the third plastic part, and the third metal bracket and the third plastic part are connected to form a third integral structural member. Similarly, the above-mentioned third integral structural member can be formed by an embedded injection molding process. Since the cover plate has a third metal bracket, the mechanical strength of the cover plate can be increased. When the variable aperture is subjected to reliability testing (rolling or drop testing, etc.) and user use, the chance of damage to the cover plate can be reduced, thereby extending the service life of the product. In addition, the third metal bracket is connected to the first metal bracket. For example, the third metal bracket in the cover plate can be connected to the first metal bracket in the fixed base by welding, thereby increasing the reliability of the connection between the cover plate and the fixed base and reducing the chance of the cover plate falling off. In some embodiments of the present application, the cover plate may be provided with multiple welding locations, which may be arranged around the circumference of the aperture, thereby ensuring the stability of the connection between the cover plate and the fixing base. Furthermore, the first gasket is stacked on the side of the third integral structure facing away from the blades. This first gasket can shield part of the blade structure below the cover plate, allowing the surface of the first gasket facing away from the third integral structure to serve as the user-visible exterior surface, achieving a decorative effect and improving the appearance quality, and maximizing the control area of ​​the external product appearance.

[0071] Furthermore, because the third metal bracket in the cover is located within the third plastic component, and the cover is positioned on the side of the blades facing away from the rotating bracket, the third plastic component in the cover is the component that directly contacts and rubs against the blades during rotation. The surface of the third plastic component can have a lower coefficient of friction than that of metal, thereby reducing friction between the blades and the third plastic component, further minimizing the risk of blade wear.

[0072] In an optional embodiment, the third metal bracket is electrically connected to the first metal bracket, and the third metal bracket is grounded through the first metal bracket. As can be seen from the above, both the cover plate and the fixing seat can be prepared by an embedded injection molding process. In addition, in this case, by electrically connecting the third metal bracket and the first metal bracket, the third metal bracket can be grounded through the first metal bracket. In this way, the manufacturing process of grounding the cover plate can be simplified. In the related art, it is necessary to electrically connect and ground the cover plate, which is mainly composed of a steel plate, to the part where the FPC leads out, by a glue dispensing method, and then cover the glue dispensing position with a glue protective glue. Compared with the related art, the present application only needs to electrically connect the third metal bracket in the cover plate to the first metal bracket in the fixing seat, for example, by welding or glue dispensing, so that there is no need to additionally set up the FPC lead-out part, and the glue dispensing layer and glue protective glue used to electrically connect the FPC lead-out part to the cover plate, thereby achieving the purpose of simplifying the structure and reducing the manufacturing process.

[0073] In an optional embodiment, the cover plate has a second light-transmitting hole that communicates with the aperture. The third metal bracket has multiple hollow sections extending through the third metal bracket, with the hollow sections arranged around the second light-transmitting hole. This allows external light to enter the aperture through the second light-transmitting hole. Furthermore, by providing multiple hollow sections on the third metal bracket, the weight of the entire third metal bracket can be reduced, thereby reducing the weight of the variable aperture.

[0074] In an optional embodiment, the variable aperture further includes a second gasket, which is stacked on the side of the plurality of blades facing the fixed base. A third light-transmitting hole is defined in the second gasket, and the third light-transmitting hole is connected to the aperture hole. This third light-transmitting hole, connected to the aperture hole, can be used to allow external light to enter the aperture hole through the third light-transmitting hole.

[0075] In an optional embodiment, the second gasket, the first gasket, and the blade are made of the same material. The material's specular reflectance G, optical density OD, L value in the material color triplet, a value, and b value are respectively: G ≤ 0.3%; OD value ≥ 5.0; L ≤ 8; |a| ≤ 1; |b| ≤ 1. In this way, the second gasket, the first gasket, and the blade can all be made of ultra-black material, so that when the blade is in motion, the color and glossiness of the first gasket, the second gasket, and the blade visible to the user are consistent, reducing the chance of color difference between the three components and improving the appearance quality.

[0076] In an optional embodiment, the material of the second gasket, first gasket, and blades has a modulus greater than or equal to 3000 MPa, a yield strength greater than or equal to 80 MPa, and an elongation at break greater than or equal to 10%. This allows the product to pass two or five drop tests and a tumble test (500 cycles) during reliability testing. Tumble tests exceeding 1000 cycles carry a certain risk. Furthermore, the product's lifespan can reach 250,000 cycles.

[0077] In an optional embodiment, the mounting base is disposed around the periphery of the rotating bracket, protruding from the surface of the cover plate facing away from the blades. This allows the portion of the mounting base around the periphery of the rotating bracket, such as the side panel, to contact the lens or other decorative components on the rear housing covering the camera module. This reduces the likelihood of deformation from direct contact between the cover plate and the lens or other device components during product testing or user use, thereby improving product lifespan and reliability.

[0078] In an optional embodiment, in the same drive component, the vertical projection of the magnet component on the rotating bracket overlaps with the vertical projection of the coil on the rotating bracket, so that in the same drive component, the positions of the magnet component and the coil correspond to each other, thereby facilitating that the coil can more easily generate a magnetic field with the magnet component after power is applied.

[0079] In an optional embodiment, the mounting base further includes an adhesive structure disposed on the surface of the base plate facing away from the side plate. Both the adhesive structure and the surface of the base plate facing away from the side plate can be connected to the lens assembly located below the iris diaphragm. This allows the connection between the iris diaphragm and the lens assembly to have an uneven surface, thereby improving bonding stability.

[0080] In an optional embodiment, the vertical projection of the bonding structure on the base plate is a fan-shaped fan having a first arcuate side and a second arcuate side, and the arc length of the first arcuate side is greater than the arc length of the second arcuate side. Wherein, the first arcuate side is arranged away from the boss relative to the second arcuate side. In this way, the bonding structure can be a dovetail structure, and the bonding groove of the lens assembly and the bonding structure can be a dovetail groove that matches the above-mentioned dovetail structure. In this case, when the camera module is working, the variable aperture is in the horizontal plane (the surface perpendicular to the optical axis of the variable aperture) and can prevent shearing in the horizontal plane along the X and Y directions. In addition, along the rotation direction of the blades in the variable aperture, the contact area between the side wall of the above-mentioned dovetail structure and the above-mentioned dovetail groove is large, which can effectively limit the variable aperture to achieve the limitation of the position of the variable aperture.

[0081] In an optional embodiment, a protrusion is provided on a side of the variable aperture close to the lens assembly, and a groove is provided on the lens assembly, and the protrusion matches the groove.

[0082] In an optional embodiment, the cross-sectional shape of the groove is a dovetail groove.

[0083] Another aspect of the present application provides an electronic device comprising a rear housing and the camera module described above, wherein the camera module is disposed on the rear housing. The electronic device has the same technical effects as the variable aperture in the camera module provided in the aforementioned embodiment, and will not be further described here.

[0084] In an optional embodiment, the electronic device further includes a processor; the camera module includes a module circuit board, and the module circuit board is electrically connected to the processor via a third FPC.

[0085] In an optional embodiment, a first driving chip is provided on the module circuit board, the first driving mechanism and the second driving mechanism are both electrically connected to the first driving chip, and the first driving chip is electrically connected to the processor; the first driving chip is used to control the first driving mechanism and the second driving mechanism.

[0086] In an optional embodiment, the electronic device further includes: a position sensor, which is electrically connected to the first driver chip, and the position sensor is used to detect the position of the second bracket relative to the base, and the first driver chip is used to control the second drive mechanism according to the position information detected by the position sensor.

[0087] In an optional implementation, the position sensor includes: a Hall sensor and a gyroscope.

[0088] In an optional embodiment, the variable aperture includes: a second driving chip, the second driving chip is electrically connected to the processor, the second driving chip is electrically connected to the third driving mechanism, and the second driving chip is used to control the third driving mechanism.

[0089] In an optional implementation, a Hall sensor is integrated into the second driver chip. BRIEF DESCRIPTION OF THE DRAWINGS

[0090] FIG1 is a schematic diagram of the disassembled structure of an electronic device provided in an embodiment of the present application;

[0091] FIG2 is a schematic structural diagram of the camera module in FIG1 ;

[0092] FIG3 is a schematic diagram of an exploded structure of the camera module in FIG2 ;

[0093] FIG4 is a schematic structural diagram of a camera drive motor provided in an embodiment of the present application;

[0094] FIG5 is a schematic structural diagram of a camera drive motor provided by an embodiment of the present application with the outer shell removed;

[0095] FIG6 is a schematic diagram of the exploded structure of a camera drive motor provided in an embodiment of the present application;

[0096] FIG7 is a schematic diagram of an exploded structure of a camera drive motor provided in an embodiment of the present application, illustrating a first drive mechanism;

[0097] FIG8 a is a schematic diagram of the exploded structure of a camera drive motor provided in an embodiment of the present application, used to illustrate a second drive mechanism;

[0098] FIG8 b is a schematic structural diagram illustrating a second driving mechanism of a camera driving motor provided in an embodiment of the present application;

[0099] FIG8c is a schematic structural diagram illustrating a second driving mechanism of a camera driving motor provided in an embodiment of the present application;

[0100] FIG9 is a schematic structural diagram illustrating a second driving mechanism of a camera driving motor provided in an embodiment of the present application;

[0101] FIG10 is a schematic diagram of an exploded structure of a camera drive motor provided by an embodiment of the present application, showing multiple balls;

[0102] FIG11 is a schematic structural diagram of a camera drive motor provided by an embodiment of the present application for displaying multiple sets of balls;

[0103] FIG12 is a schematic diagram of an exploded structure of a camera drive motor provided by an embodiment of the present application, showing a second magnetic component;

[0104] FIG13 is a structural diagram illustrating a configuration of a second magnetic component of a camera drive motor provided in an embodiment of the present application;

[0105] FIG14 is a schematic structural diagram illustrating the arrangement of multiple sets of balls and multiple sets of second magnetic components in a camera drive motor provided in an embodiment of the present application;

[0106] FIG15 is a structural diagram illustrating a spring arm arrangement of a camera drive motor provided in an embodiment of the present application;

[0107] FIG16 is a structural diagram illustrating a spring arm arrangement of a camera drive motor provided in an embodiment of the present application;

[0108] FIG17 is a schematic structural diagram illustrating a spring arm of a camera drive motor provided in an embodiment of the present application;

[0109] FIG18 is a structural diagram illustrating a spring arm arrangement of a camera drive motor provided in an embodiment of the present application;

[0110] FIG19 is a schematic structural diagram of a camera drive motor provided in an embodiment of the present application;

[0111] FIG20 is a schematic structural diagram of a camera drive motor provided in an embodiment of the present application;

[0112] FIG21 is a schematic structural diagram of a camera drive motor provided in an embodiment of the present application for demonstrating the movement of a second bracket and a lens;

[0113] FIG22 is a structural diagram illustrating the arrangement of elastic members of a camera drive motor provided in an embodiment of the present application;

[0114] FIG23 is a schematic diagram of the exploded structure of a camera drive motor provided in an embodiment of the present application, illustrating the arrangement of elastic members;

[0115] FIG24 is a schematic structural diagram illustrating an elastic member of a camera drive motor provided in an embodiment of the present application;

[0116] FIG25 is a structural diagram illustrating a configuration of a slide bar of a camera drive motor provided in an embodiment of the present application;

[0117] FIG26 is a structural diagram illustrating a configuration of a slide bar of a camera drive motor provided in an embodiment of the present application;

[0118] FIG27 is a schematic diagram of the exploded structure of a camera drive motor provided in an embodiment of the present application, illustrating the configuration of a slide bar;

[0119] FIG28 is a schematic diagram of a circuit structure of a camera drive motor for displaying a position sensor according to an embodiment of the present application;

[0120] FIG29 is a structural diagram illustrating a spring arm arrangement of a camera drive motor provided in an embodiment of the present application;

[0121] FIG30 is a schematic structural diagram illustrating a spring arm of a camera drive motor provided in an embodiment of the present application;

[0122] FIG31 is a schematic structural diagram of a camera drive motor provided in an embodiment of the present application for illustrating a second bracket;

[0123] FIG32 is a schematic diagram of the exploded structure of a camera drive motor provided by an embodiment of the present application, used to illustrate a second bracket;

[0124] FIG33 is a schematic structural diagram illustrating an electrical connection structure of a camera drive motor provided in an embodiment of the present application;

[0125] FIG34 is a schematic structural diagram illustrating an electrical connection structure of a camera drive motor provided in an embodiment of the present application;

[0126] FIG35 is a schematic structural diagram illustrating an electrical connection structure of a camera drive motor provided in an embodiment of the present application;

[0127] FIG36 is a schematic structural diagram illustrating an electrical connection structure of a camera drive motor provided in an embodiment of the present application;

[0128] FIG37 is a schematic structural diagram illustrating an electrical connection structure of a camera drive motor provided in an embodiment of the present application;

[0129] FIG38 is a schematic structural diagram illustrating an electrical connection structure of a variable aperture provided in an embodiment of the present application;

[0130] FIG39 is a schematic structural diagram of a module circuit board provided in an embodiment of the present application;

[0131] FIG40 is a schematic diagram of a support structure inside a camera drive motor provided in an embodiment of the present application;

[0132] FIG41 is a schematic diagram of the disassembled structure of a bracket inside a camera drive motor provided by an embodiment of the present application;

[0133] FIG42 is a schematic diagram of a structure of the variable aperture in FIG3 ;

[0134] FIG43 is a schematic diagram of an exploded structure of the variable aperture in FIG4 ;

[0135] FIG44 is a schematic diagram of a partial structure of a variable aperture provided in an embodiment of the present application;

[0136] FIG45 is a schematic diagram of a structure in which the rotating bracket in FIG44 is installed on the fixing base;

[0137] FIG46 is a schematic diagram of another partial structure of a variable aperture provided by an embodiment of the present application;

[0138] FIG47 is a schematic diagram of a structure in which the blade in FIG46 is installed on a fixed seat and a rotating bracket;

[0139] FIG48 is a cross-sectional view taken along the dotted line O3-O4 in FIG47;

[0140] FIG49 is a schematic structural diagram of a magnet assembly provided in an embodiment of the present application;

[0141] FIG50 is another structural schematic diagram of a magnet assembly provided in an embodiment of the present application;

[0142] FIG51 is a top view taken along the Z direction in FIG44;

[0143] FIG52 is another top view taken along the Z direction in FIG44;

[0144] FIG53 is a schematic diagram of another partial structure of a variable aperture provided by an embodiment of the present application;

[0145] FIG54 is a schematic diagram of another partial structure of a variable aperture provided by an embodiment of the present application;

[0146] FIG55 is another top view taken along the Z direction in FIG44;

[0147] FIG56 is a cross-sectional view taken along the dotted line O1-O2 in FIG55;

[0148] FIG57 is a schematic diagram of another partial structure of a variable aperture provided by an embodiment of the present application;

[0149] FIG58 is another cross-sectional view taken along the dotted line O1-O2 in FIG55;

[0150] FIG59 is another top view taken along the Z direction in FIG44;

[0151] FIG60 is a schematic diagram of another exploded structure of the variable aperture in FIG4 ;

[0152] FIG61 is a bottom view taken along the Z direction in FIG60;

[0153] FIG62 is a top view taken along the Z direction in FIG60;

[0154] FIG63 is a schematic diagram of another partial structure of a variable aperture provided by an embodiment of the present application;

[0155] FIG64 is a schematic diagram of an exploded structure of a fixing seat provided in an embodiment of the present application;

[0156] FIG65 is a schematic structural diagram of a fixing base provided in an embodiment of the present application;

[0157] FIG66 is a schematic diagram of another structure of a fixing base provided in an embodiment of the present application;

[0158] FIG67 is a schematic diagram of a partial structure of a fixing base provided in an embodiment of the present application;

[0159] FIG68 is a schematic diagram of another partial structure of a variable aperture provided by an embodiment of the present application;

[0160] FIG69 is a schematic diagram of another exploded structure of a fixing base provided in an embodiment of the present application;

[0161] FIG70 is another structural schematic diagram of a fixing base provided in an embodiment of the present application;

[0162] FIG71 is another schematic diagram of a partial structure of a fixing base provided in an embodiment of the present application;

[0163] FIG72 is a schematic diagram of another structure of the variable aperture in FIG3 ;

[0164] FIG73 is a schematic diagram of an exploded structure of a rotating bracket provided in an embodiment of the present application;

[0165] FIG74 is a schematic structural diagram of a rotating bracket provided in an embodiment of the present application;

[0166] FIG75 is a bottom view taken along the Z direction in FIG74;

[0167] FIG76 is a schematic diagram of another exploded structure of a variable aperture provided in an embodiment of the present application;

[0168] FIG77 is a schematic diagram of an exploded structure of a cover plate provided in an embodiment of the present application;

[0169] FIG78 is a schematic diagram of a portion of the structure of the cover plate in FIG77;

[0170] FIG79 is a schematic diagram of another partial structure of a variable aperture provided by an embodiment of the present application;

[0171] FIG80 is a schematic diagram of the structure of a variable aperture provided by the related art;

[0172] FIG81 is a schematic diagram of another structure of the variable aperture in FIG3 ;

[0173] FIG82 is a schematic diagram of another structure of the variable aperture in FIG3 ;

[0174] FIG83 is a schematic diagram illustrating the connection between the variable aperture and the lens assembly according to an embodiment of the present application;

[0175] FIG84 is a block diagram of an electrical connection structure of a display module provided in an embodiment of the present application;

[0176] FIG85 is a structural block diagram of an electronic device provided in an embodiment of the present application;

[0177] Figure 86 is a schematic diagram of the first application scenario of the electronic device provided in an embodiment of the present application.

[0178] Figure markings: 1-electronic device; 2-display screen; 4-middle frame; 3-back cover; 5-processor; 6-opening; 7-lens cover; 8-camera hole; 10-camera module; 11-position sensor; 20-variable aperture; 40-lens assembly; 4001-first side; 4002-second side; 41-motor; 413-base; 415-first bracket; 414-second bracket; 418-first driving mechanism; 421-second driving mechanism; 4212-SMA wire; 801-filter; 802-image sensor; 80-circuit board; 21-fixed seat; 22-rotating bracket; 23-blade; 24-third driving mechanism; 241-magnet assembly; 242-coil; 25-cover plate; 26-second gasket; 100-aperture hole; 101-first light-transmitting hole; 103-third light-transmitting hole; 28-second driving mechanism Chip; 121-first limiting post; 122-second limiting post; 211-bottom plate; 212-boss; 213-side plate; 130-first opening; 110-first mounting slot; 221-annular portion; 222-lug; 123-coil mounting hole; 1210-rotating connection hole; 1220-sliding guide groove; 2410-magnet; 27-second FPC; 2101-first plastic part; 2102-first metal bracket; 214-first metal part; 215-second metal part; 2151-metal plate; 2152-metal rod; 2153-welding part; 2100-first integral structural member; 140-first hollow area; 124-coil mounting slot; 2103- Metal ground trace; 2104-metal signal trace; 2105-metal ground terminal; 2106-metal signal terminal; 243-first magnetic conductive sheet; 111-second mounting slot; 2121-first semi-ring side wall; 2122-second semi-ring side wall; 29-second magnetic conductive sheet; 31-first rolling element; 310-first rolling groove; 32-second rolling element; 320-second rolling groove; 2401-first drive assembly; 2402-second drive assembly; 2201-second plastic part; 2202-second metal bracket; 2200-second integrated structural member; 2501-third plastic part; 2502-third metal bracket; 2503-first gasket; 102-second transparent Light hole; 2500 - third integral structural member; 25011 - hollow portion; 34 - anti-collision structure; 35 - bonding structure; 351 - first arcuate edge; 352 - second arcuate edge; 36 - bonding groove; 424 - ball bearing; 426 - second magnetic component; 4181 - magnet; 4182 - coil; 4211 - fixed claw; 4213 - movable claw; 50 - elastic member; 501 - first ear; 502 - second ear; 503 - elastic section; 53 - slide rod; 531 - slide groove; 54 - first magnetic component; 58 - second spring arm; 61 - first FPC; 621 - first conductive lead; 427 - first spring arm; 63 - second conductive lead; 66 - ground lead;622 - third conductive lead; 803 - first driver chip. DETAILED DESCRIPTION

[0179] In order to make the purpose, technical solutions and advantages of this application clearer, this application will be further described in detail below with reference to the accompanying drawings.

[0180] Hereinafter, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified with "first," "second," etc., may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0181] In addition, in this application, directional terms such as "upper" and "lower" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they can change accordingly according to changes in the orientation of the components in the drawings.

[0182] An embodiment of the present application provides an electronic device that may have a display function. The electronic device can be applied to various communication systems or communication protocols, such as: Bluetooth (BT) communication technology, global positioning system (GPS) communication technology, global system of mobile communication (GSM) communication technology, wireless fidelity (WiFi) communication technology, wideband code division multiple access wireless (WCDMA) communication technology, long term evolution (LTE), 5G communication technology and other future communication technologies. The electronic device in the embodiment of the present application can be a (mobile phone), a tablet computer (pad), a laptop computer, a smart home, a smart wearable device (for example, a smart watch, a smart bracelet, smart glasses, a smart helmet), a virtual reality (VR) electronic device, an augmented reality (AR) electronic device, etc. The electronic device may also be a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, an electronic device in a 5G network, or an electronic device in a future evolved public land mobile communication network (PLMN), etc. The embodiments of the present application are not limited to this.

[0183] As shown in Figure 1, the electronic device 1 includes a display screen 2, a rear cover 3 located on the back of the display screen 2 (arranged opposite to the display surface of the display screen 2), and a middle frame 4 located between the display screen 2 and the rear cover 3, and the middle frame 4 can support the display screen 2.

[0184] In one possible embodiment of the present application, the display screen 2 is an organic light-emitting diode (OLED) display screen. Since each light-emitting sub-pixel in the OLED display screen is provided with an electroluminescent layer, the OLED display screen can achieve self-luminescence after receiving an operating voltage.

[0185] The middle frame 4 is located between the display screen 2 and the rear case 3. The surface of the middle frame 4 facing away from the display screen 2 is used to mount internal components such as the battery, printed circuit board (PCB), camera, antenna, and processor 5. When the rear case 3 and middle frame 4 are closed, these internal components are located between them. The processor 5 provides display data to the display screen 2, driving the display screen 2 to display images.

[0186] In some embodiments, in order to enable the above-mentioned electronic device 1 to realize the shooting function, the electronic device 1 provided in the embodiment of the present application may further include a camera module 10, which may be a front camera module or a rear camera module. The front camera module may be arranged on the back of the display screen 2 shown in Figure 1, and the photosensitive surface of the front camera module is located on the display surface side of the display screen 2. The rear camera module may be arranged on the side of the middle frame 4 away from the display screen 2, that is, in the installation space formed between the middle frame 4 and the rear shell 3, and the photosensitive surface of the rear camera module is located on the back of the electronic device 1.

[0187] For example, the front camera module or the rear camera module may include multiple camera modules 10 as shown in Figure 1. Taking the rear camera module as an example, the rear housing 3 is provided with an opening 6 for exposing a portion of the camera module 10. In addition, the electronic device 1 also includes a lens cover 7 that is fastened to the camera module 10 to protect the camera module 10. The lens cover 7 has a camera hole 8 for exposing the lens of the camera module 10.

[0188] The camera module 10 can be one or more of a standard camera module, a telephoto camera module, a wide-angle camera module, an ultra-telephoto camera module, and an ultra-wide-angle camera module. This application does not limit the number of camera modules 10. FIG1 illustrates an example in which a rear camera module includes three camera modules 10.

[0189] The embodiment of the present application does not limit the electrical connection relationship of the camera module. In some embodiments, the camera module includes a module circuit board, and the surface of the middle frame 4 facing the rear shell 3 is provided with a circuit board, and the module circuit board is electrically connected to the circuit board.

[0190] It should be clear that the present application does not limit the specific structure of the electronic device 1, as long as the electronic device 1 has a camera module.

[0191] 2 and 3 , FIG. 2 is an assembly diagram of the camera module 10 according to an embodiment of the present application, and FIG. 3 is an exploded diagram of the camera module 10 according to an embodiment of the present application.

[0192] The camera module 10 includes a base 413 , a first bracket 415 , a second bracket 414 , a lens assembly 40 , and an iris 20 .

[0193] The first bracket 415 and the second bracket 414 are both set on the base 413. The second bracket 414 is connected to the base 413 via an SMA line. The first bracket 415 is a ring structure, forming a hollow cavity. The lens assembly 40 is set in the cavity and fixed on the first bracket 415. The optical axis of the lens assembly 40 is parallel to the central axis of the cavity. The variable aperture 20 is set on the side of the lens assembly 40 away from the base 413. The second bracket 414 is sleeved on the outside of the first bracket 415.

[0194] For ease of description, an XYZ coordinate axis is established in the drawings, wherein the Z direction may be the optical axis O1-O2 direction of the lens assembly 40, i.e., the thickness direction of the camera module 10. The XY plane formed by the X and Y directions may be perpendicular to the optical axis O1-O2 direction of the lens assembly 40.

[0195] The optical axis O1-O2 direction may refer to the direction in which light is transmitted by the optical system of the lens assembly 40. For example, for a symmetrical lens assembly 40, the optical axis O1-O2 may coincide with the rotational centerline of the optical system of the lens assembly 40. The optical axis O1-O2 of the lens assembly 40 may serve as the optical axis of the camera module 10, and the optical axis of the variable aperture 20 may overlap with the optical axis of the camera module 10.

[0196] The lens assembly 40 includes a lens barrel and an optical lens assembly mounted therein. The optical lens assembly is used to transmit light from the scene and form an image of the scene being photographed. By designing the structure and shape and size of the optical lens assembly, lenses with different characteristics, such as wide-angle and telephoto, can be obtained. By replacing different lenses, camera modules with different characteristics, such as wide-angle and telephoto, can be assembled.

[0197] The variable aperture 20 includes a driving device and a plurality of blades. The driving device is used to drive the plurality of blades, thereby adjusting the size of the light-inlet hole formed by the plurality of blades, and further adjusting the amount of light entering.

[0198] As shown in FIG2 , the camera module further includes a camera drive motor 41. The camera drive motor 41 can be used to drive the first bracket 415 and the lens assembly 40 to move along the optical axis O1-O2 thereof to achieve automatic focus of the lens. Alternatively, the camera drive motor 41 can be used to drive the first bracket 415, the second bracket 414, and the lens assembly 40 to move within the XY plane or to rotate around the optical axis O1-O2 of the lens assembly 40 to achieve anti-shake compensation when the electronic device shakes in any direction. Alternatively, the camera module can achieve not only automatic focus of the lens but also anti-shake compensation.

[0199] In order to enable the camera module 10 to perform photoelectric conversion on the light incident on the camera module 10 to generate image information, as shown in FIG3 , the camera module 10 may further include a filter 801, an image sensor 802, and a circuit board 80. The image sensor 802 is disposed on the circuit board 80 and is electrically connected to the circuit board 80.

[0200] For example, the image sensor 802 can be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS). The image sensor 802 is disposed at the focal plane of the camera module 10 so as to receive the light image of the subject focused by the lens assembly 40. The image sensor 802 can include multiple photosensitive units, each of which converts the amount of received light into an electrical signal proportional to the amount of light.

[0201] Furthermore, to improve the effective resolution and color reproduction of image sensor 802, filter 801 can be disposed on the light-entering side of image sensor 802. For example, filter 801 can be an infrared filter that removes infrared light from ambient light while transmitting visible light. Alternatively, filter 801 can be a dual-bandpass filter that selectively transmits wavelengths within two regions of ambient light, such as visible light and infrared light, visible light and ultraviolet light, or ultraviolet light and infrared light.

[0202] To more clearly describe the orientation of the structural components, the present application illustrates the direction of light propagation in the camera module in some of the following exemplary structural diagrams. Light entering the variable aperture 20 is referred to as incident light, while light exiting the lens 40 and entering the filter 801 is referred to as outgoing light. For example, in FIG3 , the black dashed line with an arrow indicates the direction of light propagation and depicts both incoming and outgoing light.

[0203] In some embodiments, referring to FIG3 , a lens assembly 40 includes a first side surface 4001 and a second side surface 4002, wherein the curvature of the first side surface 4001 is smaller than that of the second side surface 4002. Thus, the first side surface can be formed by cutting a circular lens assembly. The cut lens assembly occupies less space, facilitating miniaturization of the camera module.

[0204] For example, the first side surface 4001 is a plane, and the second side surface 4002 is an arc-shaped surface, thereby further reducing the space occupied by the lens assembly.

[0205] In an optional embodiment, the shape of the first bracket 415 is adapted to the shape of the lens assembly 40. Thus, the space occupied by the first bracket can be reduced, further realizing the miniaturization of the camera module.

[0206] Refer to Figure 4, which shows the structure of a camera drive motor according to an embodiment of the present application. In this embodiment, the camera drive motor 41 includes a housing 411, which is used to protect the internal structure of the camera drive motor from water and dust. When assembled into the electronic device, the camera drive motor is fixed within the electronic device via the housing.

[0207] An assembly cavity 412 is provided in the housing 411 , and an opening communicating with the assembly cavity 412 is provided on the housing 411 . The shape of the opening includes but is not limited to circular, square, elliptical and polygonal.

[0208] The assembly cavity 412 is used to accommodate the lens assembly 40 and at least part of the variable aperture 20. A certain avoidance gap is maintained between the edge of the shell at the opening and the lens assembly 40 and the variable aperture 20 to avoid the lens assembly 40 from tilting and moving in any direction around.

[0209] FIG5 is a structural diagram of the camera driving motor 41 without the outer shell 411 according to an embodiment of the present application, and FIG6 is an exploded diagram of FIG5 . FIG6 partially decomposes the camera driving motor, but not completely decomposes it.

[0210] In this embodiment, as shown in FIG5 , the camera driving motor 41 further includes a base 413, a second bracket 414, and a first bracket 415. The base 413, the second bracket 414, and the first bracket 415 can be disposed within the housing 411 of the camera driving motor. The second bracket 414 is disposed on the base 413.

[0211] As shown in FIG6 , a receiving cavity 416 is formed in the second bracket 414 , and the first bracket 415 is disposed in the receiving cavity 416 . The first bracket 415 has a lens mounting hole 417 , and the lens mounting hole 417 is used to assemble the lens assembly 40 .

[0212] In addition to the base 413, the second bracket 414 and the first bracket 415, the camera drive motor 41 may also include a first drive mechanism 418. The first drive mechanism 418 can be located between the second bracket 414 and the first bracket 415. The first drive mechanism 418 connects the second bracket 414 and the first bracket 415. The first drive mechanism 418 is used to drive the first bracket 415 to move relative to the second bracket 414 along the axial direction (Z direction) of the lens mounting hole, so as to drive the lens assembly 40 in the lens mounting hole 417 to move along the extension direction of the optical axis O1-O2, thereby forming an autofocus camera module.

[0213] It can be understood that: when the camera module given in the embodiment of the present application is automatically focusing, the second bracket 414 is the fixed part, the first bracket 415 is the movable part, and the lens assembly 40 is fixedly connected to the movable first bracket 415. Driven by the first driving mechanism 418, when the movable part moves along the Z direction relative to the fixed part, it can simultaneously drive the lens assembly 40 to move along the Z direction to achieve automatic focusing.

[0214] As shown in FIG7 , FIG7 exemplifies a possible structure of the first drive mechanism 418. The first drive mechanism 418 includes multiple sets of focus drive units, which are arranged at intervals along the circumference of the first bracket 415. In some examples, the multiple sets of focus drive units can be symmetrically arranged about the optical axis O1-O2 of the lens.

[0215] For example, in Figure 7, two groups of focus drive units are included, and the two groups of focus drive units include: focus drive unit 418A and focus drive unit 418B, focus drive unit 418A and focus drive unit 418B are arranged opposite to each other, and focus drive unit 418A and focus drive unit 418B are symmetrically arranged about the optical axis O1-O2 of the lens.

[0216] In this example, each focus drive unit includes a magnet 4181 and a coil 4182, one of which is disposed on the second bracket 414, and the other is disposed on the first bracket 415. For example, in FIG7 , the magnet 4181 is disposed on the first bracket 415, and the coil 4182 is disposed on the second bracket 414.

[0217] There are many ways to install the magnet 4181 on the first bracket 415. For example, in the example of FIG7, a first installation groove 419 is opened on the wall surface of the first bracket 415 facing the second bracket 414, and the magnet 4181 is installed in the first installation groove 419.

[0218] FIG7 shows an example of a layout of the coil 4182 . A second mounting groove 420 is provided on a wall surface of the second bracket 414 facing the first bracket 415 , and the coil 4182 is disposed in the second mounting groove 420 .

[0219] In the example of this application, when the camera module is automatically focusing, the Ampere force generated by the magnet 4181 and the coil 4182 causes the first bracket 415 carrying the lens assembly to move up and down along the optical axis O1-O2 of the lens, thereby achieving automatic focusing.

[0220] In some optional structures, a focus drive unit can include multiple magnets 4181. Each of the multiple magnets 4181 can generate a magnetic field with the energized coil 4182, thereby increasing the strength of the generated magnetic field. The multiple magnets 4181 can be arranged in a Halbach array structure as shown in Figure 7.

[0221] The camera driving motor of the example of the present application includes not only a first driving mechanism for realizing autofocus, but also a second driving mechanism for realizing optical image stabilization.

[0222] In this application example, the second driving mechanism connects the base 413 and the second bracket 414. The second driving mechanism drives the second bracket 414, the first bracket 415 and the lens assembly 40 to move along the XY plane perpendicular to the optical axis O1-O2 of the lens assembly to achieve anti-shake compensation.

[0223] The second bracket 414 in the example of the present application not only serves as a fixed part in realizing the autofocus function, but also serves as a moving part in realizing the optical image stabilization function. Compared with separately setting the fixed and moving parts for autofocus, and the fixed and moving parts for optical image stabilization, the present application can reduce the number of structural parts, compress the volume of the entire camera drive motor, and realize the miniaturized design of the camera drive motor.

[0224] In some embodiments, as shown in FIG8 a , which exemplarily illustrates a possible structure of the second driving mechanism, the second driving mechanism may include multiple groups of anti-shake driving units, which may be arranged around the circumference of the base.

[0225] For example, in Figure 8a, the second drive mechanism includes four groups of anti-shake drive units, namely, anti-shake drive unit 421A, anti-shake drive unit 421B, anti-shake drive unit 421C, and anti-shake drive unit 421D. Anti-shake drive unit 421A, anti-shake drive unit 421B, anti-shake drive unit 421C, and anti-shake drive unit 421D are arranged along the circumference of the base.

[0226] Continuing with FIG8 a , each anti-shake drive unit includes a fixed jaw 4211, a movable jaw 4213, and a shape memory alloy (SMA) wire 4212 connecting the fixed jaw 4211 and the movable jaw 4213. One end of the SMA wire 4212 is connected to the movable jaw 4213, and the other end is connected to the fixed jaw 4211.

[0227] The second drive mechanism of the present application example uses an SMA drive assembly to form an SMA drive motor. The SMA drive assembly has the characteristics of large driving force and small size, so the size of the entire camera drive motor can be compressed.

[0228] In some possible structures, such as FIG8a , each anti-shake drive unit may include a movable claw 4213, a fixed claw 4211, and an SMA wire 4212, with the SMA wire 4212 connected between the movable claw 4213 and the fixed claw 4211. The drive structure in the example of this application is a 4-wire SMA drive assembly, which has a simple structure and occupies a small area.

[0229] Continuing with Figure 8a, the movable claws 4213 of two adjacent groups of anti-shake drive units are arranged close together and connected together. For example, the anti-shake drive unit 421A and the anti-shake drive unit 421D are adjacent to each other, and the movable claws 4213 of the anti-shake drive unit 421A and the movable claws 4213 of the anti-shake drive unit 421D are connected together. Alternatively, in some examples, the movable claws 4213 of the anti-shake drive unit 421A and the movable claws 4213 of the anti-shake drive unit 421D are integrated into one structure.

[0230] As shown in Figure 8a, the fixed claws 4211 of two adjacent groups of anti-shake drive units are arranged close to each other and separated. For example, the anti-shake drive unit 421A and the anti-shake drive unit 421B are adjacent to each other, and the fixed claws 4211 of the anti-shake drive unit 421A and the fixed claws 4211 of the anti-shake drive unit 421B are close to each other, and the two fixed claws 4211 are independent structural components.

[0231] In some examples, the fixed jaw 4211 can serve as a terminal for a first electrode of the SMA wire 4212, and the movable jaw 4213 can serve as a terminal for a second electrode of the SMA wire 4212. For example, the fixed jaw 4211 can serve as a terminal for the positive electrode of the SMA wire, and the movable jaw 4213 can serve as a terminal for the negative electrode of the SMA wire.

[0232] As shown in Figure 8a, the anti-shake drive unit 421A and the anti-shake drive unit 421D are arranged adjacent to each other, and the movable claw 4213 of the anti-shake drive unit 421A and the movable claw 4213 of the anti-shake drive unit 421D are connected together. For example, the fixed claw 4211 of the anti-shake drive unit 421A serves as the positive terminal, the fixed claw 4211 of the anti-shake drive unit 421D also serves as the positive terminal, and the connected movable claw 4213 of the anti-shake drive unit 421A and the movable claw 4213 of the anti-shake drive unit 421D serve as the negative terminal. In this example, the SMA wire 4212 is a wire structure made of SMA. SMA can be a nickel-titanium alloy material that shrinks when heated and expands when cooled. When no current is flowing through the SMA wire, the SMA wire is in a relaxed state. When current flows into the SMA wire, the SMA wire converts part of the electrical energy into heat energy due to its resistance characteristics. The SMA wire contracts under the action of its own heat energy to apply tension to the second bracket 414, thereby driving the second bracket 414 to move in any direction around to achieve optical image stabilization.

[0233] By defining the positional relationship of the four SMA wires, the SMA drive assembly can control the electrical signals within the four SMA wires, causing the combined force of the four SMA wires on the base to move along the XY plane. Because the second bracket 414 and the first bracket 415 carrying the lens can simultaneously translate relative to the base 413, the SMA drive assembly can drive the lens assembly to translate, enabling optical image stabilization of the camera module.

[0234] There are many ways to arrange the movable claw 4213 , the fixed claw 4211 and the SMA wire 4212 of the second driving mechanism 421 .

[0235] As shown in Figures 8b and 8c, Figure 8b shows an exploded view of the second driving mechanism and other structural components, and Figure 8c is a visible view after the structure shown in Figure 8b is rotated 180 degrees.

[0236] 8b and 8c , the fixed claw 4211 is located on the lower surface of the base 413 and is fixedly connected to the base 413. It can be understood that the base 413 has an upper surface and a lower surface that are opposite to each other, the upper surface is close to the light entrance side, and the lower surface is close to the light exit side, and the fixed claw 4211 is fixed to the lower surface of the base 413.

[0237] 8b and 8c, the movable claw 4213 is located on the lower surface of the second bracket 414 and is fixedly connected to the second bracket 414. The lower surface of the second bracket 414 can be understood as the surface close to the light emitting side.

[0238] As shown in Figure 9, Figure 9 is a feasible structure of the movable clamping claw 4213 given in the present application, wherein the movable clamping claw 4213 includes a first part 4213A and a second part 4213B, and a third part 4213C connecting the first part 4213A and the second part 4213B. The first part 4213A and the second part 4213B are located on the lower surface of the base 413 and are respectively connected to the SMA wire 4212. The third part 4213C is located on the lower surface of the second bracket 414 and is fixedly connected to the second bracket 414.

[0239] In order to securely connect the third portion 4213C of the movable jaw 4213 to the second bracket 414, as shown in Figures 8b and 8c, a cavity 422 can be defined on the base 413, and an extension 423 that can pass through the cavity 422 can be provided on the second bracket 414. The third portion 4213C protrudes toward the cavity 422, and the third portion 4213C extends below the extension 423 and is securely connected to the extension 423. The two black dashed lines shown in Figures 8b and 8c illustrate the connection between the extension 423 and the movable jaw 4213.

[0240] 8 b and 8 c , the SMA wire 4212 is located on the lower surface of the base 416 . In this example, the extension direction of the SMA wire 4212 is parallel to the extension direction of the side of the base.

[0241] When the camera module performs the optical image stabilization function, the first bracket 415 carrying the lens assembly and the second bracket 414 will move relative to the base 413. There is friction between the first bracket 415 and the base 413. The magnitude of the friction affects the camera effect. For example, when the friction is large, the preview image of the camera module will have slight jitter.

[0242] The following is a brief introduction to how friction affects camera quality.

[0243] In the second drive mechanism, the position of the lens is controlled by the actual length difference between two opposing SMA wires. The length of the SMA wire is related to the resistance. Within a certain range, the length of the SMA wire and the resistance are linearly related, that is, the longer the SMA wire, the greater the resistance. Therefore, when different drive control signals are given to the four SMA wires shown, the resistance difference between the two SMA wires in opposite positions can be used as a feedback signal of the length difference of the SMA wires.

[0244] Due to the friction between the second bracket 414 and the base 413, there is a deviation between the target position of the control signal and the actual movement position of the lens. Therefore, feedback compensation is continuously performed between the resistor feedback signal and the drive control signal. Therefore, when there is a large friction force opposite to the direction of movement, the lens should move to a certain position accurately due to resistance, but it actually falls short. At this time, the control system detects through the resistor that the lens has not moved to the theoretical position and then increases the drive signal to increase the tension of the SMA wire slightly, causing the lens to move to the theoretical position. Due to the presence of friction, this compensation is greater than when there is no friction. However, there may be overcompensation. When the compensation is too large, it will reduce the driving force of the SMA wire, and the lens will move in the opposite direction, approaching the theoretical position. At this time, the direction of the friction force changes, and the impact on the compensation effect is greater than when there is no friction. The presence of friction can reduce control accuracy and compensation accuracy. Because the resistor feedback compensation is performed in real time, that is, the above compensation action is continuous, the ultimate result is that the actual lens position fluctuates back and forth between the theoretical position, causing slight jitter in the preview image of the camera module. Due to the existence of friction, this vibration is more severe than when there is no friction or very little friction.

[0245] In order to reduce friction and weaken shaking, the embodiments of the present application provide some structures that can reduce the friction coefficient of the movement of the second bracket 414, thereby improving the optical image stabilization performance and improving the picture quality.

[0246] As shown in Figure 10, which exemplarily illustrates an exploded view of the base 413 and the second bracket 414, a plurality of ball bearings 424 are disposed between the second bracket 414 and the base 413. When the second driving mechanism drives the second bracket 414 and the first bracket 415 to move relative to the base 413 along an XY plane perpendicular to the optical axis, the second bracket 414 can slide along the plurality of ball bearings 424.

[0247] By arranging multiple balls 424 between the base 413 and the second bracket 414, the friction coefficient during the movement of the second bracket 414 can be reduced, the stroke control accuracy of the second driving mechanism is higher, the shake of the lens can be reduced, and the shooting effect can be improved.

[0248] The multiple balls in the examples of this application can be arranged in various ways. For example, in the example of Figure 11, a mounting groove 425 can be provided on the second bracket 414, and the balls are arranged in the mounting groove 425 and can roll in the mounting groove 425. For another example, a mounting groove can be provided on the side of the base 413 facing the second bracket 414, and the balls are located in the mounting groove.

[0249] As shown in FIG11 , the inlay groove 425 of this example is provided on the second bracket 414 , the portion of the ball 424 located in the inlay groove 425 protrudes from the inlay groove 425 , and the portion of the ball 424 protruding from the inlay groove 425 contacts the base 413 .

[0250] During the optical image stabilization process, in order to improve the stability of the movement of the second bracket 414 relative to the base 413, as shown in Figure 11, multiple groups of balls are included, each group of balls includes multiple balls, and the multiple groups of balls can be arranged at intervals along the circumference of the second bracket 414, so that the second bracket 414 can move smoothly.

[0251] For example, in FIG. 11 , a first group of balls 424A, a second group of balls 424B and a third group of balls 424C are included. The first group of balls 424A, the second group of balls 424B and the third group of balls 424C are spaced apart along the circumference of the second bracket 414 .

[0252] As shown in FIG11 , the connection between the first group of balls 424A, the second group of balls 424B and the third group of balls 424C can be in the form of a triangle, for example, an equilateral triangle. By utilizing the stability of the triangle, the smoothness of the movement of the second bracket 414 can be further improved.

[0253] In some feasible structures, the number of balls in each group can be the same or different.

[0254] The arrangement of the multiple balls in each ball group can be the same or different.

[0255] In this example, when the second bracket 414 moves relative to the base 413, in order to reduce the risk of the second bracket 414 tilting under its own weight, as shown in Figure 12, the exploded view shown in Figure 12 is a structural diagram with the light incident side at the bottom and the light emitting side at the top. In this example, a magnetic attraction structure 426 can also be provided between the base 413 and the second bracket 414. This can be understood as follows: as shown in Figure 14, a second magnetic component 426 is provided between the two opposing surfaces of the base 413 and the seat body 414.

[0256] When the second driving mechanism drives the second bracket 414 to slide along the multiple ball bearings in the XY plane, the second magnetic component 426 generates a magnetic force F between the base 413 and the second bracket 414. By utilizing this magnetic force F, the second bracket 414 can be urged to have an attractive force toward the base 413 during the movement, thereby reducing the probability of the moving second bracket 414 tilting.

[0257] In some examples, as shown in FIG13 , the second magnetic component 426 may include a magnetic sheet 426A and a magnet 426B, with one of the magnetic sheet 426A and the magnet 426B being disposed on the base 413 and the other being disposed on the second bracket 414. For example, in FIG13 , the magnet 426B may be disposed on the base 413 and the magnetic sheet 426A disposed on the second bracket 414.

[0258] There is a gap between the magnetic sheet 426A and the magnet 426B. The attraction between the magnetic sheet 426A and the magnet 426B is used to enable the second bracket 414 to move smoothly in the XY plane.

[0259] In order to reduce the area occupied by the magnet and the magnetic sheet, for example, as shown in FIG13 , a placement groove may be provided in the base 413 , and the magnet 426B may be provided in the placement groove.

[0260] In other examples, a mounting groove may be provided in the second bracket 414, and the magnetic sheet 426A may be provided in the mounting groove of the second bracket, thereby reducing the space occupied by the magnetic sheet 426A and the magnet 426B, and further reducing the thickness of the entire camera motor.

[0261] The second magnetic components 426 may be provided in multiple groups, and the multiple groups of second magnetic components 426 are arranged at intervals along the circumference of the second bracket 414. For example, the multiple groups of second magnetic components may be arranged symmetrically about the optical axis O1-O2 of the lens.

[0262] In some configurations, when multiple sets of balls and multiple sets of second magnetic components are provided, as shown in Figure 14 , one or more sets of second magnetic components 426 can be positioned between two adjacent sets of balls 424. These sets of balls and second magnetic components can be arranged alternately along the circumference of the second bracket 414. This further enhances the smoothness of the second bracket's movement, reduces vibration, and optimizes image quality.

[0263] 15 and 16 , which illustrate the structure of the camera drive motor from different angles. In this example, the camera drive motor may further include a first spring arm 427 , a portion of which is connected to the second bracket 414 and another portion of which is connected to the base 413 .

[0264] In some examples, as shown in FIG17 , FIG17 exemplarily illustrates a structure of the first spring arm 427. The first spring arm 427 may be L-shaped. The first spring arm 427 includes a first section 4271, a second section 4273, and a connecting portion 4272 connecting the first section 4271 and the second section 4273.

[0265] Continuing to refer to Figure 17, the end of the first section 4271 away from the connecting portion 4272 and the end of the second section 4273 away from the connecting portion 4272 are connected to the movable second bracket 414 and can be referred to as the movable end 427A, and the connecting portion 4272 is connected to the base 413 and can be referred to as the fixed end 427B.

[0266] In some installation arrangements, the first spring arm 427 may be disposed between two opposing surfaces of the base 413 and the second bracket 414 .

[0267] In some other installation methods, as shown in FIG. 18 , the first spring arm 427 may be disposed on a side of the second bracket 414 away from the base 413 .

[0268] Since the first spring arm 427 is fixedly connected to the base 413, as shown in Figure 18, a boss 428 can be provided on the base 413, and the boss 428 extends toward the second bracket 414. The connecting portion 4272 of the first spring arm 427 is fixedly connected to the boss 428, so that the first spring arm 427 is fixedly connected to the base 413.

[0269] In the embodiment of the present application, the first spring arm 427 can drive the first bracket 415, the second bracket 414 and the lens assembly to move when the SMA wire is energized. During the anti-shake process, the first spring arm 427 can balance and buffer the force on the second bracket 414, making the movement of the second bracket 414 smoother.

[0270] In addition, when the SMA wire is powered off, the first spring arm can also drive the second bracket 414 and the first bracket 415 carrying the lens assembly to move to the initial position by generating elastic force through deformation during the process of driving the second bracket to move when the SMA wire is powered on.

[0271] In some examples, returning to Figures 15 and 16, two first spring arms 427 can be included, and the two first spring arms can be symmetrically arranged about O1-O2 of the lens. Then, when the second bracket 414 moves, the two symmetrically arranged first spring arms can generate the same deformation amount.

[0272] As shown in Figure 15, the two first spring arms can be respectively referred to as spring arm A and spring arm B, the first section 4271 of spring arm A is parallel to the first side of the second bracket 414, and the second section 4273 of spring arm A is parallel to the second side of the second bracket 414; the first section 4271 of spring arm B is parallel to the third side of the second bracket 414, and the second section 4273 of spring arm B is parallel to the fourth side of the second bracket, wherein the first side is opposite to the third side, and the second side is opposite to the fourth side.

[0273] It can be understood that: the first section of spring arm A is arranged opposite to the first section of spring arm B, and the shape of the first section of spring arm A can be the same as the shape of the first section of spring arm B; the second section of spring arm A is arranged opposite to the second section of spring arm B, and the shape of the second section of spring arm A can be the same as the shape of the second section of spring arm B; so that the two spring arms can be arranged symmetrically about the optical axis of the lens, thereby making the elastic force symmetrical.

[0274] In the embodiment of the present application, as shown in Figures 19 and 20, Figure 20 is a view from the bottom surface of Figure 19. The second drive mechanism, comprising a movable claw 4213, a fixed claw 4211, and an SMA wire 4212, is disposed on the side of the base 413 facing away from the second bracket 414. The ball 424, which is used to reduce the friction coefficient of movement of the second bracket 414, can be understood as being disposed on the upper surface of the base 413, the fixed claw 4211 and the SMA wire 4212 are disposed on the lower surface of the base 413, and the first spring arm 427 is disposed on the side of the second bracket 414 facing away from the base 413. In other words, the second drive mechanism 421, the ball 424, the second magnetic component 426, and the first spring arm 427 are not centrally located, but rather distributed at different locations. This allows for full utilization of space at different locations and prevents interference between multiple structural components.

[0275] As shown in FIG21 , FIG21 simply illustrates the positional relationship between the second bracket 414, the first bracket 415, and the lens assembly 40. Since the camera drive motor has a dimension in its thickness direction (such as the Z direction in FIG21 ), as terminal devices become smaller and thinner, the thickness of the camera drive motor needs to be smaller. Alternatively, when the camera drive motor is not working, that is, when the camera drive motor is not performing any of the autofocus or anti-shake compensation functions, the thickness of the camera drive motor is relatively small. When the camera drive motor is working, the thickness can be adjusted to a preset dimension to ensure the normal use of autofocus and anti-shake compensation.

[0276] In some embodiments, the electronic device may include a pre-load drive mechanism and a cover plate. The cover plate is disposed on a side of the variable aperture 20 away from the lens assembly 40.

[0277] When the camera drive motor is not working, as shown in (a) of Figure 21, the pre-pressure drive mechanism can apply a pre-pressure F toward the base to the cover plate, and the pre-pressure F is transmitted to the first bracket 415 and the lens assembly 40 in turn through the cover plate and the variable optical cavity to compress the thickness of the entire camera drive motor. For example, the first bracket 415 and the lens assembly 40 can be pressed to the first position, as shown in (b) of Figure 21. When the camera drive motor needs to work, the first bracket 415 and the lens assembly 40 can be moved to the second position. The direction from the first position to the second position is along the optical axis O1-O2 of the lens, and the first position is closer to the second bracket 414 than the second position.

[0278] In this way, when the first bracket 415 and the lens assembly 40 are compressed to the first position, the thickness of the entire camera drive motor can be compressed. When the first bracket 415 and the lens assembly 40 move to the second position, the normal use of autofocus and anti-shake compensation is guaranteed.

[0279] In some camera drive mechanisms, as shown in (a) and (b) of FIG. 21 , the distance X1 between the first position and the second position can be greater than 500 μm, which can significantly reduce the thickness of the camera drive motor when not working.

[0280] When the camera driving motor needs to work, the pre-pressure F of the pre-pressure driving mechanism of the electronic device on the cover is removed, so that the first bracket 415 and the lens assembly 40 pop out.

[0281] In some embodiments, in order to move the first bracket 415 and the lens assembly 40 from the first position to the second position, in the example of the present application, as shown in Figure 21, an elastic member 50 can be set in the camera drive motor, and the elastic member 50 is used to give the first bracket 415 and the lens assembly 40 an elastic force f to move from the first position to the second position.

[0282] When autofocus is required, as shown in (b) and (c) of Figure 21, the first bracket 415 carrying the lens assembly 40 can be moved between the second position and the third position under the drive of the first driving mechanism to achieve focusing, wherein the second position is between the first position and the third position.

[0283] When the first bracket 415 and the lens assembly 40 move between the second position and the third position, the first bracket 415 is separated from the elastic member 50 , and the elastic member 50 does not generate elastic force on the first bracket 415 and the lens assembly 40 .

[0284] As shown in Figures 22 and 23, Figure 22 illustrates one method for installing the elastic member 50, while Figure 23 is an exploded view of Figure 22. In this example, the elastic member 50 can be positioned below the first bracket 415. When the first bracket 415 and the lens assembly 40 are in the first position, the first bracket 415 contacts the elastic member 50, causing the elastic member 50 to deform, generating an elastic force directed from the first position to the second position. Under the elastic force of the elastic member 50, the first bracket 415 and the lens assembly 40 can move from the first position to the second position, away from the base.

[0285] In some examples, as shown in FIG. 24 , the elastic member 50 includes a first lug 501 , a second lug 502 , and an elastic segment 503 connected between the first lug 501 and the second lug 502 .

[0286] As shown in FIG. 23 , the first ear 501 and the second ear 502 may be fixed to the second bracket 414 , and the elastic section 503 may extend to a side of the first bracket 415 close to the base 413 .

[0287] For example, as shown in FIG23 , a protrusion 51 can be provided on the side of the first bracket 415 facing the base. When the preload drive mechanism applies a preload F to the first bracket 415 and the lens assembly 40, and the first bracket 415 carrying the lens assembly 40 moves along the optical axis O1-O2 to the first position, the elastic segment 503 of the elastic member 50 contacts the protrusion 51, causing the elastic segment 503 to deform, generating an elastic force directed from the first position to the second position. When the preload drive mechanism removes the preload F, the elastic force of the elastic segment 503 causes the first bracket 415 and the lens assembly 40 to move from the first position to the second position.

[0288] As shown in Figures 22 and 23, in some examples, multiple elastic members 50 can be included, and the multiple elastic members 50 can be symmetrically arranged about the optical axis O1-O2 to make the elastic force symmetrical, and the first bracket 415 and the lens assembly 40 move stably under the action of the symmetrical elastic force.

[0289] In some camera drive mechanisms, returning to FIG. 21 , as shown in FIG. 21 (b) and (c), when the camera module is autofocusing, the distance X2 between the second position and the third position can be greater than 1000 μm. Furthermore, the distance X1 between the first position and the second position can be greater than 500 μm. Thus, when the first bracket and lens assembly move between the first position and the third position, the travel (X1 + X2) reaches greater than 1500 μm.

[0290] It can be understood that in the example of this application, the travel of the first bracket 415 carrying the lens assembly 40 includes not only the buffering travel under the elastic force of the elastic member 50, but also the focusing travel under the driving force of the first driving mechanism. Compared with only the focusing travel, the travel of the lens assembly 40 and the first bracket 415 in the example of this application is greater.

[0291] In order to improve the stability of movement when the first bracket 415 carrying the lens assembly 40 has a larger stroke, as shown in Figures 25 and 26, the camera drive motor may also include a slide bar 53, the axial direction of the slide bar 53 is consistent with the optical axis O1-O2 direction of the lens, the slide bar 53 is fixed relative to the second bracket 414, and the first bracket 415 is slidably connected to the slide bar 53.

[0292] When the first bracket 415 carrying the lens assembly 40 is in the buffer stroke and in the focusing stroke, that is, when the first bracket 415 and the lens assembly 40 move between the first position and the third position shown in Figure 21, the slide bar 53 serves as a guiding structure, and the first bracket 415 will slide along the axial direction of the slide bar 53 to ensure that the movement trajectory of the first bracket 415 and the lens assembly 40 is basically a planar motion.

[0293] 27 exemplarily shows one arrangement of the slide bar 53. Along the optical axis O1-O2 of the lens, a guide groove 55 is provided on the first bracket, and the slide bar 53 is slidably arranged in the guide groove 55.

[0294] To further increase the relative movement speed between the slide bar 53 and the guide groove 55, in some implementations, a lubrication structure may be provided in the guide groove 55. For example, the guide groove 55 may be filled with lubricating oil; or, for another example, a film structure with a low friction coefficient may be formed on the inner wall surface of the guide groove 55.

[0295] When the first bracket 415 carrying the lens assembly 40 moves relative to the second bracket 414, multiple sliding bars 53 can be provided in the camera drive motor to improve the stability of the first bracket 415 sliding relative to the sliding bar 53. For example, in the examples of Figures 25 and 26, sliding bars A and B are provided. Sliding bars A and B can be arranged at intervals along the circumference of the first bracket 415, and sliding bars A and B are disposed in corresponding guide grooves.

[0296] In some examples, more sliding rods may be provided, and these multiple sliding rods may be evenly distributed along the circumference of the first bracket. These multiple sliding rods may also be symmetrically arranged about the optical axis O1-O2 of the lens, so that the movement of the lens is smoother when focusing.

[0297] In some configurations, as shown in FIG26 , the first bracket 415 has a sliding groove 531 that slidably engages the slide bar 53. When the first bracket 415 slides along the axial direction of the slide bar 53, the slide bar 53 contacts the sliding groove. The slide bar 53 abuts against the sliding groove 531, positioning the slide bar 53 and ensuring that the first bracket 415 moves linearly along the axial direction of the slide bar 53.

[0298] In some possible structures, multiple sliding rods 53 and multiple elastic members 50 may be included. The multiple sliding rods 53 and the multiple elastic members 50 may be arranged alternately along the circumference of the first bracket 415. That is, one elastic member 50 may be provided between two adjacent sliding rods 53, and one sliding rod 53 may be provided between two adjacent elastic members 50.

[0299] To further enable the first bracket 415 carrying the lens assembly 40 to move linearly relative to the second bracket 414 in a direction parallel to the lens optical axis O1-O2, a first magnetic component 54 is added in the embodiment of the present application, as shown in Figures 26 and 27. This first magnetic component 54 can generate an attractive force between the first bracket 415 and the second bracket 414, with this attractive force having a component perpendicular to the lens optical axis O1-O2. In this way, when the first driving mechanism drives the first bracket 415 and the lens assembly 40 to move along the lens optical axis O1-O2, the first bracket 415 can slide linearly along the axial direction of the slide bar 53 under the attraction.

[0300] In some examples, as shown in FIG27 , the first magnetic component 54 may include a magnet fixed to the first bracket 415 and disposed near the slide bar 53. For example, the slide bar 53 may be a magnetic metal structure, generating an attractive force f between the magnet and the slide bar. This attractive force f enables the first bracket 415 to hold the slide bar 53 tightly during movement, thereby sliding along the axial direction of the slide bar 53. Alternatively, the slide bar 53 may be a non-magnetic structure, such as ceramic, and a magnetic material may be formed on the outer wall of the ceramic.

[0301] In some other examples, the first magnetic component 54 may include a first magnet fixed on the first bracket 415 and a second magnet fixed on the second bracket 414. A magnetic attraction force may be generated between the first magnet and the second magnet. The magnetic attraction force has a component force perpendicular to the slide rod 53. The component force is used to enable the first bracket 415 to hold the slide rod 53 tightly and slide smoothly.

[0302] Referring to Figure 27, when the magnet is used to hold the slide bar, a mounting cavity 56 can be set at a position next to the slide bar 53 of the first bracket 415, and the magnet can be set in the mounting cavity 56. For example, the magnet can be set in the mounting cavity 56 through a glue layer 57.

[0303] In some examples, as shown in Figure 26, the slide bar 53 is set close to the coil and magnet of the focus drive unit, and the magnet of the first magnetic component 54 is set close to the slide bar 53, electromagnetic induction is generated between the coil and magnet of the focus drive unit, and magnetic attraction is generated between the magnet of the first magnetic component 54 and the slide bar 53.

[0304] To prevent electromagnetic induction between the coil and magnet of the focus drive unit from interfering with the magnetic attraction between the magnet of the first magnetic component and the slide bar, as shown in FIG26 , the magnet of the first magnetic component 54 is further away from the focus drive unit than the slide bar 53. This can reduce the mutual interference between them.

[0305] In the example of the present application, even if the first bracket 415 carrying the lens assembly 40 has a large stroke, such as the buffer stroke mentioned above, and the focusing stroke under the driving force of the first driving mechanism, under the action of the sliding rod 53 and the first magnetic component 54, the movement trajectory of the first bracket 415 carrying the lens assembly 40 can be basically along the optical axis O1-O2, reducing the risk of the lens assembly being offset during a large stroke.

[0306] In this example of the present application, a position sensor may also be included, and the position sensor is used to detect the sliding position of the first bracket 415 relative to the sliding rod 53.

[0307] For example, the position sensor can be an electromagnetic transducer. When the first bracket 415 carrying the lens assembly head moves relative to the second bracket 414 for focusing, the electromagnetic transducer senses the change in magnetic flux and converts it into an output signal change, thereby determining the position of the lens.

[0308] In some examples, a detection magnet can be set on the first bracket 415 and arranged opposite to the electromagnetic sensor. Then, when the first bracket 415 equipped with the lens assembly and the detection magnet moves along the optical axis O1-O2 of the lens, the electromagnetic sensor senses the change in the magnetic flux of the detection magnet and determines the position of the lens.

[0309] In some examples, the detection magnet in the position sensor 11 can be shared with the magnet in the first driving mechanism, which can simplify the structure.

[0310] Please refer to Figure 28, which is an internal circuit diagram of the electronic device. In an embodiment of the present application, the electronic device further includes a first driver chip 803. In some embodiments, the first driver chip 803 can be arranged on the mainboard, and the electromagnetic sensor in the position sensor 11 can be arranged on the first bracket. Of course, the electromagnetic sensor and the first driver chip 803 can also be arranged on other structures within the electronic device, such as on a circuit board where a universal serial bus (USB) device is located. Figure 28 only provides an example of the electrical connection between the electromagnetic sensor and the first driver chip 803, which cannot be considered as a special limitation to the present application.

[0311] The position sensor 11 is used to detect the position of the lens.

[0312] As shown in Figure 29, the camera drive motor of the example of the present application may further include a second spring arm 58, part of which is connected to the second bracket 414 and part of which is connected to the first bracket 415. When the camera module performs autofocus, when the lens assembly 40, the first bracket 415, and the variable aperture move along the optical axis O1-O2 of the lens, the second spring arm 58 deforms to balance and buffer the forces acting on the variable aperture and the lens assembly, thereby making the movement of the variable aperture and the lens assembly smoother.

[0313] In some examples, as shown in FIG29 , a plurality of second spring arms 58 may be included, and the plurality of second spring arms 58 may be arranged at intervals along the circumference of the first bracket 415. For example, the plurality of second spring arms may be arranged symmetrically about the optical axis O1-O2 of the lens. Then, when the lens assembly, the iris diaphragm, and the first bracket move along the optical axis O1-O2 of the lens, the plurality of second spring arms may generate the same amount of deformation, thereby providing symmetrical elastic forces.

[0314] FIG30 illustrates an embodiment of the present invention showing an implementation of a second spring arm 58. The second spring arm 58 includes a first branch arm 581 and a second branch arm 582. The first branch arm 581 and the second branch arm 582 can be positioned adjacent to each other, with one end of each branch arm connected to the first bracket 415 and the other end connected to the second bracket 414.

[0315] By providing a plurality of separate arms as shown in FIG30 , the forces acting on the iris diaphragm and the lens assembly can be further balanced and buffered, making the movement of the iris diaphragm and the lens assembly smoother.

[0316] As shown in Figures 31 and 32, Figure 32 is an exploded view of the second bracket 414 and the first bracket 415 in Figure 31. The second bracket 414 of the present application example may include a main body 414A and an extension 414B. The extension 414B is provided on a side of the main body 414A close to the base. The extension 414B extends along the circumference of the outer edge of the main body 414A in a direction away from the main body 414A. In this way, a step may be formed between the main body 414A and the extension 414B of the second bracket as shown in Figures 31 and 32.

[0317] By using the second bracket with steps in the example of this application, a space can be formed on the periphery of the main body 414A, and other structural components in the camera module can be arranged in the space.

[0318] In some constructions, the main body portion 414A and the extension portion 414B can be a unitary structure.

[0319] 31 and 32 , along the optical axis O1 - O2 of the lens, the main body 414A and the extension 414B have a depth dimension, and an accommodating cavity is formed inside the main body 414A and the extension 414B, and the first bracket 415 is disposed in the accommodating cavity.

[0320] In some examples, the coil and magnet of the first driving mechanism, as well as the slide bar and the first magnetic component, can be disposed in a space between the first bracket 415 and the main body 414A.

[0321] In some examples, there is a gap between the extension portion 414B and the base, and the fixed jaw, the movable jaw, and the SMA wire of the second driving mechanism can be placed in the gap.

[0322] A plurality of balls for reducing the friction coefficient of the second bracket 414 relative to the base 413 and a second magnetic component for providing magnetic attraction between the second bracket 414 and the base 413 may also be disposed in the gap.

[0323] Alternatively, in some examples, the fixed jaw, the movable jaw, and the SMA wire may be disposed on a side of the base 413 facing away from the second bracket 414 .

[0324] In the camera module, an electrical connection structure needs to be provided to electrically connect the variable aperture drive mechanism, the first drive mechanism, the second drive mechanism, etc. with the circuit board of the camera module.

[0325] For example, a circuit structure can be formed on the second bracket 414 and a circuit structure can be formed on the base 413. The circuit structure on the second bracket 414 and the circuit structure on the base 413 are electrically connected to the circuit board of the camera module, so that the variable aperture drive mechanism, the first drive mechanism, the second drive mechanism, etc. form a drive path with the circuit board.

[0326] Figures 33 and 34 illustrate an exemplary electrical connection structure, which is a flexible structure. The electrical connection structure may include a second spring arm 58, which includes a first end 58A and a second end 58B. The second end 58B of the second spring arm 58 may be electrically connected to the drive mechanism of the variable aperture. For example, when the drive mechanism of the variable aperture includes a coil and a magnet, the second end 58B of the second spring arm 58 may be electrically connected to the coil of the variable aperture.

[0327] In the example of FIG. 34 , two second spring arms 58 are included. Each second spring arm 58 includes two branches, and each branch arm has a second end 58B. Thus, the two second spring arms 58 have four second ends 58B electrically connected to the coil of the variable aperture.

[0328] When the driving mechanism of the variable aperture includes four coils, two of the four second ends 58B are connected to two of the four coils, and the other two of the four second ends 58B are connected to the remaining two of the four coils.

[0329] In some examples, as shown in FIG. 33 and FIG. 34 , a conductive structure such as a wire may be provided on the second bracket 414 to electrically connect to a flexible printed circuit (FPC) 61 .

[0330] There are many ways to implement the conductive structure. For example, the conductive leads can be formed by electroplating, or by embedding metal through insert molding.

[0331] As shown in Figures 33 and 34 , the first end 58A of the second spring arm 58 can be electrically connected to the first FPC 61 via a third conductive lead 622 provided on the second bracket 414. In this way, the iris diaphragm can be electrically connected to the first FPC 61 via the second spring arm 58 and the third conductive lead 622 provided on the second bracket 414. The first FPC 61 is then electrically connected to the camera module's circuit board, thus forming a drive path between the camera module's circuit board and the iris diaphragm coil.

[0332] It can be understood that the second spring arm 58 in the example of the present application not only has the function of buffering and balancing the stability of lens movement, but also has the function of electrical connection.

[0333] In some feasible structures, see Figures 33 and 34, the coil in the focus drive unit can be electrically connected to the first FPC through a conductive structure arranged on the second bracket 414. For example, a first conductive lead 621 is formed by embedding metal by insert molding, which electrically connects the coil in the first drive mechanism to the first FPC, and the first FPC is electrically connected to the circuit board of the camera module. In this way, the circuit board of the camera module and the coil in the first drive mechanism form a drive path.

[0334] In this example of the present application, the position sensor 11 can be electrically connected to the first FPC through the third conductive lead 622 as shown in FIG. 34 .

[0335] In some embodiments, as shown in Figures 33 and 34 , the first FPC 61 may include a first portion 611 and a second portion 612. The first portion 611 may be disposed between the first bracket 415 and the second bracket 414 and opposite to the coil of the focus drive unit, while the second portion 612 surrounds the base 413 and the second bracket 414 and is electrically connected to a circuit board in the electronic device.

[0336] In the example of the present application, the second driving mechanism includes an SMA driving component for optical image stabilization. In order to form a driving path between the SMA driving component and the circuit board of the camera module, as shown in Figure 35, Figure 35 shows the electrical connection structure of the SMA driving component. It can include multiple connection terminals. For example, these multiple connection terminals can include a signal connection terminal 64 electrically connected to the fixed clamping claw 4211. In some feasible structures, the second conductive lead 63 can be formed by embedding metal through insert molding (insert molding), and the signal connection terminal 64 is electrically connected to the fixed clamping claw 4211 through the second conductive lead 63.

[0337] As shown in Figure 35, the SMA drive assembly includes four fixed claws 4211, and the four fixed claws 4211 are electrically connected to the corresponding signal connection terminals 64 through the second conductive leads 63. The signal connection terminals 64 are electrically connected to the circuit board in the camera module. In this way, the circuit board of the camera module and the fixed claws in the second drive mechanism form a driving path.

[0338] As shown in Figures 36 and 37, the plurality of connection terminals further include a ground connection terminal 65, which can be electrically connected to the first spring arm 427 via a ground lead 66. The ground lead 66 can be formed into a conductive lead by electroplating, or can be formed by embedding metal through insert molding.

[0339] In the embodiment of the present application, the first spring arm 427 of the example of the present application not only has the function of buffering and balancing the movement stability of the second bracket, but also has a grounding function.

[0340] In this embodiment, the electrical connection structure includes: a first FPC 61, the first FPC 61 is disposed on the second bracket 414, the first FPC 61 is electrically connected to the module circuit board 80, a first conductive lead 621, the first conductive lead 621 is disposed on the second bracket 414, a first end of the first conductive lead 621 is electrically connected to the first driving mechanism 418, and a second end of the first conductive lead 621 is electrically connected to the first FPC 61; a first spring arm 427, a first end of the first spring arm 427 is connected to the second bracket 414, and a second end of the first spring arm 427 is connected to the base 413. Fixed, the second conductive lead 63, the second conductive lead 63 is set on the base 413, the second driving mechanism 421 is electrically connected to the module circuit board 80 through the second conductive lead 63, the grounding lead 66, the grounding lead 66 is set on the base 413, one end of the grounding lead 66 is electrically connected to the second end of the first spring arm 427, and the other end of the grounding lead 66 is electrically connected to the module circuit board 80 of the camera module 10, the second spring arm 58, the first end of the second spring arm 58 is electrically connected to the variable aperture 20, and the second end of the second spring arm 58 is fixed on the first bracket 415.

[0341] In some embodiments, a first driving chip 803 is provided on the module circuit board 80 , and the first driving mechanism 418 is electrically connected to the first FPC 61 through the first conductive lead 621 , and is also electrically connected to the first driving chip 803 through the first FPC 61 .

[0342] In some embodiments, the second driving mechanism 421 is electrically connected to the first driving chip 803 through the second conductive lead 63 .

[0343] In some embodiments, the camera module 10 further includes a position sensor 11 for detecting the position of the second bracket 414 relative to the base 413 . The position sensor 11 is electrically connected to the first driver chip 803 via the first FPC 61 .

[0344] In some embodiments, the electrical connection structure further includes: a third conductive lead 622, the third conductive lead 622 is disposed in the second bracket 414, the variable aperture 20 includes: a second driver chip 28 and a second FPC 27, the third drive mechanism 24 is electrically connected to the second driver chip 28, the second driver chip 28 is electrically connected to the second FPC 27, the first end of the second spring arm 58 is connected to the second FPC 27, and the second end of the second spring arm 58 is electrically connected to the first FPC 61 through the third conductive lead 622, so that the second driver chip 28 is electrically connected to the module circuit board 80 through the second FPC 27, the second spring arm 58, the third conductive lead 622 and the first FPC 61.

[0345] In order to increase the mechanical strength of the entire camera module, as shown in Figures 40 and 41, multiple brackets 68 can be set. For example, the bracket 68 can be embedded in the second bracket 414 by embedding metal through insert molding to enhance the strength of the second bracket 414.

[0346] In some structures, as shown in FIG. 41 , a plurality of brackets 68 may be provided, and the plurality of brackets 68 may be arranged at intervals along the circumference of the second bracket 414 .

[0347] As shown in FIG. 41 , a reinforcing plate 69 may be provided on the surface of the second bracket 414 , and an end portion 681 of a bracket 68 embedded in the second bracket 414 may be connected to the reinforcing plate 69 to further enhance the strength of the second bracket 414 .

[0348] Alternatively, in some examples, the bracket 68 may be made of a metal material, and the bracket 68 is electrically connected to the grounding lead 66 shown in FIG. 37 for grounding.

[0349] The variable aperture 20 shown in Figure 3 can adjust the amount of external light entering the camera module 10. The structure of the variable aperture 20 is illustrated below. In some embodiments of the present application, as shown in Figure 42, the variable aperture 20 includes a fixed seat 21 (base) 21, a rotating bracket (carrier) 22, a plurality of blades 23, at least one third drive mechanism 24 and a cover (cover) 25. For example, the above-mentioned third drive mechanism 24 may include a magnet assembly 241 and a coil 242. The above-mentioned cover 25 is covered on the fixed seat 21, and the cover 25 can form a receiving space with the fixed seat 21. The above-mentioned rotating bracket 22, blades 23 and at least one third drive mechanism 24 are located in the receiving space.

[0350] Based on this, as shown in FIG43 (an exploded view of the variable aperture 20 shown in FIG42 ), the rotating bracket 22 can be located within the fixed base 21 and rotatably connected to the fixed base 21. In this case, the rotating bracket 22 can serve as the mover in the variable aperture 20, rotating relative to the fixed base 21 about the optical axis O1-O2. The fixed base 21 can serve as the stator in the variable aperture 20, remaining stationary relative to the rotating bracket 22.

[0351] For example, in order to set the rotating bracket 22 in the fixed base 21, as shown in Figure 44, the fixed base 21 may include a bottom plate 211, a boss 212 and a side plate 213. The boss 212 can be set on the bottom plate 211, and the fixed base 21 has a first light-transmitting hole 101, which can pass through the boss 212 and the bottom plate 211. In addition, the side plate 213 is set on the bottom plate 211 and can be set around the periphery of the boss 212. The above-mentioned bottom plate 211, boss 212 and side plate 213 can be formed by a single preparation process, such as an injection molding process. In this case, the bottom plate 211, boss 212 and side plate 213 are connected to form an integrated structure.

[0352] Based on this, the side panels 213, the sidewalls of the boss 212, and the bottom panel 211 can enclose a first mounting groove 110. At least a portion of the rotating bracket 22 can be located in the first mounting groove 110, and the rotating bracket 22 located in the first mounting groove 110 can be arranged around the periphery of the first light-transmitting hole 101.

[0353] In this way, by providing the first mounting groove 110 on the fixing seat 21, the rotating bracket 22 located in the first mounting groove 110 can be accommodated in the fixing seat 21, so that the thickness of the rotating bracket 22 and the fixing seat 21 (along the Z direction) can overlap, thereby achieving the purpose of reducing the thickness of the variable aperture 20.

[0354] On this basis, as shown in Figure 44, the rotating bracket 22 can include an annular portion 221 and a lug 222, wherein the lug 222 is provided on the side wall of the annular portion 221, and the lug 222 can be connected to the annular portion 221. For example, the lug 222 and the annular portion 221 are connected to form an integral structural member through an injection molding process. In addition, the magnet assembly 241 can be provided on the lug 222, and the magnet assembly 241 is connected to the lug 222, so that the magnet assembly 241 can be supported by the lug 222. In addition, a first opening 130 is provided on the side plate 213 of the fixed seat 21, and the first opening 130 passes through the side plate 213 in a direction perpendicular to the bottom plate 211, and the first opening 130 is connected to the first mounting groove 110.

[0355] In this case, as shown in FIG45 , the annular portion 221 of the rotating bracket 22 is located within the first mounting groove 110 (as shown in FIG44 ), and the annular portion 221 can be arranged around the periphery of the boss 212 of the fixed base 21. Furthermore, the lug 222 of the rotating bracket 22 and the magnet assembly 241 connected to the lug 222 can be located within the first opening 130 (as shown in FIG44 ). Thus, by providing the first opening 130 on the side plate 213 of the fixed base 21, the side plate 213 of the fixed base 21 can be positioned away from the lug 222 of the rotating bracket 22 and the magnet assembly 241 connected to the lug 222.

[0356] Based on this, a travel gap L can be provided between the sidewall of the first opening 130 (as shown in FIG. 44 ) and the lug 222, as shown in FIG. 45 . Therefore, along the rotation direction of the rotating bracket 22, the opening length of the first opening 130 can be the rotational travel of the rotating bracket 22. When the rotating bracket 22 abuts the sidewall of the first opening 130, the rotating bracket 22 has rotated to its maximum travel.

[0357] Continuing with FIG43 , a cover plate 25 is disposed on the side of the plurality of blades 23 facing away from the rotating bracket 22. The plurality of blades 23 are disposed on the rotating bracket 22, and are slidably connected to the rotating bracket 22 and rotatably connected to the fixed base 21. The plurality of blades 23 are arranged in an annular pattern, surrounding the aperture 100.

[0358] For example, the variable aperture 20 may further include a first limiting post 121 as shown in FIG46 , disposed on the fixed base 21, and a second limiting post 122 disposed on the rotating bracket 22. When the rotating bracket 22 includes the annular portion 221 and the lug 222 as shown in FIG44 , the second limiting post 122 may be disposed on the annular portion 221.

[0359] In addition, as shown in Figure 46, a rotation connection hole 1210 and a sliding guide groove 1220 that pass through the blade 23 are provided on the blade 23. As shown in Figure 47, a blade 23 is connected to a first limiting column 121 and a second limiting column 122. Specifically, as shown in Figure 48 (a cross-sectional view obtained by cutting along the dotted line O3-O4 in Figure 47). The first limiting column 121 on the fixed seat 21 is set in the rotation connection hole 1210 (as shown in Figure 46) on the blade 23, so that the blade 23 can be rotatably connected to the fixed seat 21. The second limiting column 122 on the rotating bracket 22 is set in the sliding guide groove 1220 on the blade 23, so that the blade 23 can be slidably connected to the rotating bracket 22.

[0360] In this case, as the rotating bracket 22 rotates relative to the fixed base 21 in the direction of the arc arrow in Figure 47, the second limiting post 122 on the rotating bracket 22 moves along the sliding guide groove 1220 on the blade, thereby pushing the blade 23 to rotate along the axis of the first limiting post 121. As the multiple blades 23 move, the size of the aperture 100 changes accordingly. The two ends of the sliding guide groove 1220 represent the extreme positions of the second limiting post 122. When the second limiting post 122 slides to either of these two extreme positions, the aperture 100 can change to its maximum or minimum aperture.

[0361] Furthermore, as shown in FIG46 , the aperture 100 can be connected to the first light-transmitting aperture 101, so that light from the light-transmitting aperture 100 can pass through the first light-transmitting aperture 101 and enter the lens assembly 40 shown in FIG3 . Based on this, the minimum aperture of the aperture 100 can match the first limit aperture position of the variable aperture 20, such as the minimum aperture position. In this case, the light flux entering the lens assembly 40 through the variable aperture 20 can be minimized. Conversely, in some embodiments of the present application, the maximum aperture of the aperture 100 can match the second limit aperture position of the variable aperture 20, such as the maximum aperture position. In this case, the light flux entering the lens assembly 40 through the variable aperture 20 can be maximized.

[0362] Alternatively, in other embodiments of the present application, as further shown in FIG43 , the variable aperture 20 may further include a second soma 26, which is stacked on the side of the plurality of blades 23 facing the fixed base 21. A third light-transmitting hole 103 is defined in the second soma 26, which is connected to the aperture 100. Light passing through the aperture 100 can first pass through the third light-transmitting hole 103 and then through the first light-transmitting hole 101 on the fixed base 21 to enter the lens assembly 40 (as shown in FIG3 ).

[0363] Therefore, the aperture of the third light-transmitting hole 103 can match the second limit aperture setting of the variable aperture 20, such as the maximum aperture setting. In this case, the edge shape of the third light-transmitting hole 103 is closer to an ideal circle than the edge shape of the aperture 100 at its maximum aperture, which is enclosed by the multiple blades 23. When the aperture 100 is at its maximum aperture, the blades 23 can be positioned outside the edge of the third light-transmitting hole 103, thereby avoiding obstruction of the third light-transmitting hole 103.

[0364] Continuing with FIG43 , to drive the rotating bracket 22 to rotate relative to the fixed base 21 along the optical axis O1-O2, as described above, the variable aperture 20 may further include a third drive mechanism 24. The magnet assembly 241 in the third drive mechanism 24 may be disposed on a side of the rotating bracket 22 facing away from the blades 23, and the magnet assembly 241 may be connected to the rotating bracket 22. To ensure that the coil 242 in the third drive mechanism 24 is positioned relative to the magnet assembly 241, the coil 242 may be disposed on the side of the magnet assembly 241 facing the fixed base 21.

[0365] In this way, since the magnet assembly 241 is connected to the rotating bracket 22 serving as the mover, when power is supplied to the coil 242, the magnetic field generated by the coil 242 interacts with the magnetic field generated by the magnet assembly 241 to generate a force, which enables the magnet assembly 241 to rotate relative to the coil 242, thereby driving the rotating bracket 22 connected to the magnet assembly 241 to rotate relative to the fixed seat 21.

[0366] On this basis, in some embodiments of the present application, in the same third driving mechanism 24, the vertical projection of the magnet assembly 241 on the rotating bracket 22 overlaps with the vertical projection of the coil 242 on the rotating bracket 22. In this way, the positions of the rotating bracket 22 and the coil 242 in the same third driving mechanism 24 correspond to each other, so that the magnetic field generated by the coil 242 after power is applied can more easily interact with the magnetic field generated by the magnet assembly 241.

[0367] In some embodiments of the present application, as shown in FIG49 , the magnet assembly 241 may include a plurality of magnets 2410. The magnetic fields generated by the plurality of magnets 2410 may interact with the magnetic field generated by the energized coil 242 (as shown in FIG43 ), thereby increasing the strength of the magnetic field generated by the magnet assembly 241. For example, the directions in which the N poles of the plurality of magnets 241 in the magnet assembly 241 point to the S poles may all be arranged along the Z direction. The N pole and S pole of the magnet 241 are not shown in FIG49 , and the upper and lower surfaces of the magnet 2410 along the Z direction may serve as the N pole and S pole of the magnet 2410 to each other.

[0368] Alternatively, as another example, the multiple magnets in the above-mentioned magnet assembly 241 can be arranged in a Halbach array structure as shown in Figure 50. Among them, in the above-mentioned Halbach array structure, the direction in which the N poles of some magnets 2410a point to the S poles is set along the Z direction, and the direction in which the N poles of other magnets 2410b point to the S poles (the N poles and S poles of magnet 2410b are not shown in the figure) are set along the horizontal plane (XY plane). Magnets 2410a and magnets 2410b are arranged alternately. In this way, the surface A of the magnet assembly 241 with the above-mentioned Halbach array structure facing the coil 242 has a larger magnetic field strength, so that when a very small current flows through the coil 242, it can push the rotating bracket 22 connected to the magnet assembly 241, thereby increasing the driving force on the rotating bracket 22 and reducing power consumption.

[0369] In summary, in the variable aperture 20 provided in the embodiment of the present application, the rotating bracket 22 shown in FIG. 46 is located within the fixed base 21, and the rotating bracket 22 is rotatably connected to the fixed base 21. Furthermore, the blades 23 shown in FIG. 43 are slidably connected to the rotating bracket 22, and the blades 23 are also rotatably connected to the fixed base 21. In this case, when the rotating bracket 22 rotates relative to the fixed base 21, the rotating bracket 22 can drive the blades 23 to slide relative to the rotating bracket 22 while causing the blades 23 to rotate relative to the fixed base 21. Based on this, during the rotation of the rotating bracket 22, the aperture 100 enclosed by the multiple annularly distributed blades 23 can change as the rotating bracket 22 rotates, thereby adjusting the aperture size of the aperture 100 and ultimately achieving the purpose of adjusting the aperture position of the variable aperture 20.

[0370] On this basis, in order to drive the rotating bracket 22 to rotate, it can be seen from the above that the third driving mechanism 24 includes a magnet assembly 241 and a coil 242 as shown in Figure 43. The magnet assembly 241 is arranged on the side of the rotating bracket 22 facing away from the blade 23. The coil 242 is arranged on the side of the magnet assembly 241 facing the fixed base 21. In this case, by energizing the coil 242, the magnetic field generated by the coil 242 and the magnetic field generated by the magnet assembly 241 interact to generate a force, which can drive the magnet assembly 241 to drive the rotating bracket 22 to rotate relative to the fixed base 21.

[0371] As such, in the variable aperture 20 provided in the embodiment of the present application, since the magnet assembly 241 is disposed on the rotating bracket 22 serving as a mover, the variable aperture 20 can be a moving magnet type variable aperture 20. Based on this, the coil 242 requiring power does not need to be disposed on the aforementioned mover (i.e., a moving coil type variable aperture), thereby simplifying the electrical connection structure of the variable aperture 20. Furthermore, in the embodiment provided in the present application, simply by rotating the rotating bracket 22 serving as the mover and the fixed base 21 serving as the stator, the rotating bracket 22 can be used to drive the movement of the multiple blades 23 to adjust the aperture of the aperture 100. This reduces the number of components used to adjust the aperture of the variable aperture 20 and achieves the purpose of simplifying the structure of the variable aperture 20.

[0372] On this basis, as shown in FIG46 , by placing the rotating bracket 22 within the fixed base 21, the thickness (dimension along the Z direction) of the variable aperture 20 can be reduced. Furthermore, by placing the magnet assembly 241 on the side of the rotating bracket 22 facing away from the blades 23 and the coil 242 on the side of the magnet assembly 241 facing the fixed base 21, compared to the solution of placing the magnet and coil on the circumference of the rotating bracket, the area of ​​the variable aperture 20 within the XY surface (i.e., in the lateral direction) can be reduced, thereby achieving the purpose of reducing the size of the variable aperture 20. In this case, by simplifying the structure of the variable aperture 20 and reducing the thickness and lateral area of ​​the variable aperture 20, the miniaturization design of the entire camera module 10 is facilitated, and the integration of the electronic device is improved.

[0373] Furthermore, when the image sensor 802 (as shown in FIG. 3 ) in the camera module 10 has a larger target surface (i.e., the size of the image sensor), the lens assembly 40 of the camera module 10 has a larger size along the Z direction, so that the size of the lens assembly 40 matches the target surface of the sensor 802. Therefore, when the camera module 10 uses an image sensor 802 with a larger target surface, although it is difficult to further reduce the size of the lens assembly 40 along the Z direction, by using the variable aperture 20 provided in the embodiment of the present application, the size of the entire camera module 10 can be effectively reduced because the size of the variable aperture 20 along the Z direction is smaller.

[0374] On this basis, the third driving mechanism 24 may further include a first magnetic conductive sheet 243 as shown in FIG51 (a top view taken along the Z direction in FIG44 ). The first magnetic conductive sheet 243 may be provided on the side of the bottom plate 211 of the fixed seat 21 facing the rotating bracket 22 (as shown in FIG44 ). The first magnetic conductive sheet 243 is used to adsorb the magnet assembly 241 on the rotating bracket 22 shown in FIG44 . The magnetic conductive sheet may also be referred to as a magnetic attraction sheet. The magnetic conductive sheet has a high magnetic permeability, a low resistivity, and a small iron loss. Based on this, the first magnetic conductive sheet 243 may adsorb the magnet assembly 241 along the thickness direction of the variable aperture 20 (the Z direction in FIG44 ). Since the first magnetic conductive sheet 243 adsorbs the magnet assembly 241 along the Z direction, the first magnetic conductive sheet 243 may also be referred to as a Z-direction magnetic conductive sheet.

[0375] For example, the first magnetic conductive sheet 243 may include a metal capable of attracting ferromagnetic materials, such as iron, nickel, cobalt, or the like. For example, the first magnetic conductive sheet 243 may be a stainless steel sheet, also referred to as a steel sheet. The configuration of the metal material capable of being attracted to magnetic materials in the following embodiments of this application is the same as described above and will not be further elaborated here.

[0376] 51 , the vertical projection of the first opening 130 on the sidewall of the boss 212 overlaps with the vertical projection of the first magnetic conductive sheet 243 on the sidewall of the boss 212. As can be seen from the above, along the rotation direction of the rotatable bracket 22, the opening length (dimension along the Y direction) of the first opening 130 can be the rotational travel of the rotatable bracket 22. Therefore, when the vertical projection of the first opening 130 on the sidewall of the boss 212 overlaps with the vertical projection of the first magnetic conductive sheet 243 on the sidewall of the boss, the first magnetic conductive sheet 243 can be positioned within the travel range of the rotatable bracket 22.

[0377] In this way, when the rotating bracket 22 rotates, the first magnetic conductive sheet 243 adsorbs the magnet assembly 241 along the thickness direction of the variable aperture 20, which can reduce the separation of the rotating bracket 22 and the fixed base 21 during the rotation of the camera module 10 and improve the reliability of the variable aperture 20.

[0378] In addition, by adjusting the number and position of the first magnetic conductive pieces 243 and the spacing between them and the magnet assembly 241, the adsorption force between the first magnetic conductive pieces 243 and the magnet assembly 241 can be adjusted. For example, as shown in FIG51 , each third driving mechanism 24 can include two first magnetic conductive pieces 243. When the variable aperture 20 has two third driving mechanisms 24, the variable aperture 20 can have four first magnetic conductive pieces 243 (black filled portions).

[0379] In this case, the attraction force between all the first magnetic conductive sheets 243 in the variable aperture 20 and the magnet assembly 241 can reach about 10 times the weight of the rotating bracket 22 and the magnet assembly 241. At this time, the friction force between the rotating bracket 22 and the fixed base 21 in Figure 44 can be increased.

[0380] Based on this, as shown in Figure 44, when the rotating bracket 22 rotates to drive the multiple blades 23 to form the aperture 100, which reaches an aperture position, such as the maximum aperture position (for example, the fourth aperture), the rotating bracket 22 and the fixed base 21 have a large friction force, making it difficult for the rotating bracket 22 to rotate further relative to the fixed base 21. As a result, the power supply to the coil 242 can be terminated, so that the position of the rotating bracket 22 and the fixed base 21 is relatively fixed (in a steady state), achieving the purpose of aperture self-locking. In this way, when the user is taking photos or videos in a fixed scene and does not need to change the aperture, the aperture is self-locked and the coil 242 is in a power-off state (the current in the coil 242 can be 0), thereby achieving the purpose of reducing power consumption.

[0381] For example, as shown in FIG52 (a top view taken along the Z direction in FIG44 ), a second mounting slot 111 is provided in the bottom plate 211 of the fixed base 21, which serves as the bottom of the first mounting slot 110. A first magnetic conductive sheet 243 (shown in FIG51 ) is located within the second mounting slot 111. Thus, by providing the second mounting slot 111 in the bottom plate 211, the first magnetic conductive sheet 243 (shown in FIG51 ) located within the second mounting slot 111 can be embedded within the bottom plate of the fixed base 21, thereby allowing the thickness of the first magnetic conductive sheet 243 to overlap with a portion of the thickness of the bottom plate 211, thereby facilitating a reduction in the thickness of the variable aperture 20. Furthermore, the second mounting slot 111 is provided at the end of the coil mounting hole 123 for accommodating the coil 242 that faces the boss 212, allowing the first magnetic conductive sheet 243 located within the second mounting slot 111 to be closer to the magnetic assembly 241 (shown in FIG44 ).

[0382] In some embodiments of the present application, the third drive mechanism 24 may include two first magnetic conductive sheets 243. As shown in FIG53 , the end of the coil 242 facing the boss is located between the two first magnetic conductive sheets 243. In this way, by increasing the number of first magnetic conductive sheets 243, the attraction force between all first magnetic conductive sheets 243 and the magnetic attraction assembly can be increased, thereby facilitating the self-locking of the aperture when the coil 242 is powered off.

[0383] As can be seen from the above, as shown in FIG50 , the magnet assembly 241 having the aforementioned Halbach array structure can provide a relatively large driving force to the rotating bracket 22. Therefore, the magnet assembly 241 having the aforementioned Halbach array structure can also be referred to as a high-thrust magnet assembly 241. Therefore, by providing the magnet assembly 241 having the aforementioned Halbach array structure, the problem of excessive friction causing the rotating bracket 22 to become stuck during rotation relative to the fixed base 21 due to adsorption of the first magnetic conductive sheet 243 (as shown in FIG53 ) on the magnet assembly 241 can be resolved, thereby increasing the product's fault tolerance.

[0384] On this basis, as shown in Figure 54 , the sidewall of the boss 212 of the fixing seat 21 can include a first semi-annular sidewall 2121 and a second semi-annular sidewall 2122 that are connected end to end. The first semi-annular sidewall 2121 and the second semi-annular sidewall 2122 are spliced ​​end to end to form the complete sidewall of the boss 212. The dashed line on the boss 212 in Figure 54 serves as the dividing line between the first semi-annular sidewall 2121 and the second semi-annular sidewall 2122. This dashed line merely illustrates the division between the first semi-annular sidewall 2121 and the second semi-annular sidewall 2122 and does not limit the division method. Furthermore, the dashed line does not actually exist on the boss 212. For example, when the boss 212 is a frustum, the arc lengths of the first semi-annular sidewall 2121 and the second semi-annular sidewall 2122 can be the same.

[0385] Continuing with FIG54 , the variable aperture 20 further includes a second magnetic conductive sheet 29 and a first rolling element 31. The second magnetic conductive sheet 29 is disposed on the first semi-annular sidewall 2121 and is configured to engage with the magnet assembly 241. Because the second magnetic conductive sheet 29 is attached to a portion of the sidewall of the boss, such as the first semi-annular sidewall 2121, the second magnetic conductive sheet 29 can also be referred to as a lateral magnetic conductive sheet.

[0386] Furthermore, as shown in FIG54 , the vertical projection of the first opening 130 on the first semi-annular sidewall 2121 overlaps with the vertical projection of the second magnetic conductive sheet 29 on the first semi-annular sidewall 2121. As can be seen from the above, the first opening 130 can accommodate the coil 242, and the magnet assembly 241 is located on the side of the coil 242 facing the rotating bracket 22. Therefore, the magnet assembly 241 and the coil 242 are arranged in layers in the Z direction, so a portion of the assembly 241 can also be located within the first opening 130. In this way, when the vertical projection of the first opening 130 on the first semi-annular sidewall 2121 overlaps with the vertical projection of the second magnetic conductive sheet 29 on the first semi-annular sidewall 2121, the second magnetic conductive sheet 29 can be located near the magnet assembly 241, thereby making it easier for the second magnetic conductive sheet 29 to be attracted by the magnet assembly 241.

[0387] 54 , the first rolling member 31 is disposed between the rotating bracket 22 and the bottom plate 211, and is located on the side of the second semi-ring sidewall 2122. The rotating bracket 22 and the fixed seat 21 are in contact with the first rolling member 31, and the rotating bracket 22 is rotatably connected to the fixed seat 21 via the first rolling member 31. For example, a first rolling groove 310 for accommodating the first rolling member 31 may be provided on the fixed seat 21.

[0388] As shown in FIG55 (a top view taken along the Z direction in FIG44 ), since the second magnetic conductive sheet 29 is disposed on the first semi-circular sidewall 2121, when the second magnetic conductive sheet 29 and the magnet assembly 241 (as shown in FIG44 ) are attracted to each other, the rotating bracket 22 moves along the Y direction toward the position of the second semi-circular sidewall 2122 of the fixed seat 21 (e.g., toward the right). Since the first rolling element 31 is located on one side of the second semi-circular sidewall 2122, that is, the second magnetic conductive sheet 29 and the first rolling element 31 can be located on opposite sides of the boss 212, as shown in FIG56 (a cross-sectional view taken along the dotted line O1-O2 in FIG55 ), the rotating bracket 22 and the fixed seat 21 can contact the first rolling element 31, that is, the first rolling element 31, the rotating bracket 22, and the fixed seat 21 are all in a zero-fit (or tight-fit) state.

[0389] In this case, as shown in Figure 56, when the rotating bracket 22 is rotatably connected to the fixed seat 21 through the first rolling member 31, since the rotating bracket 22 and the fixed seat 21 can be in contact with the first rolling member 31, the rotating bracket 22 can always lean on the first rolling member 31 during the rotation process and rotate relative to the fixed seat 21, thereby improving the stability of the rotating bracket 22 during the rotation process, and the consistency of the rotating bracket 22 when it rotates to various angles, thereby improving the reliability of the product.

[0390] For example, the first rolling member 31 may include a ball or a roller. Alternatively, the first rolling member 31 may include multiple balls or a plurality of balls. For example, if the first rolling member 31 includes multiple balls, the multiple balls may be arranged along the thickness direction (i.e., the Z direction) of the variable aperture 20.

[0391] In some other embodiments of the present application, the variable aperture 20 further includes a second rolling element 32, as shown in FIG57 . The second rolling element 32 can be disposed between the rotating bracket 22 (as shown in FIG44 ) and the bottom plate 211 of the fixed base 21, with the second rolling element 32 located on the side of the first semi-ring sidewall 2121. For example, a first rolling groove 320 can be provided on the fixed base 21 for accommodating the second rolling element 32. An adjustment gap H1 is defined between the second rolling element 32 and the rotating bracket 22, as shown in FIG58 (a cross-sectional view taken along the dashed line O1-O2 in FIG55 ), with the gap being 30 μm ≤ H1 ≤ 70 μm.

[0392] As can be seen from the above, as further shown in FIG58 , the second rolling element 32 and the second magnetic conductive sheet 29 are located on the same side of the boss 212. When the second magnetic conductive sheet 29 is attracted to the magnet assembly 241 (shown in FIG44 ), the rotating bracket 22 moves toward the location of the second semi-annular sidewall 2122 of the fixed base. In this case, the second rolling element 32 located on the side of the first semi-annular sidewall 2121 can maintain the aforementioned adjustable gap H1 between the rotating bracket 22.

[0393] In this way, when the variable aperture 20 undergoes reliability testing (rolling or drop testing, etc.) and user use, causing the rotating bracket 22 to undergo a large displacement in the horizontal plane (perpendicular to the optical axis of the variable aperture 20), the side of the rotating bracket 22 close to the second rolling element 32 can contact the second rolling element 32, so that the second rolling element 32 limits the further displacement of the rotating bracket 22, reducing the displacement of the rotating bracket 22, thereby avoiding the rotating bracket 22 causing pulling on the multiple blades 23 slidingly connected to the rotating bracket 22 when the rotating bracket 22 undergoes a large displacement, resulting in damage to the blades 23.

[0394] For example, the second rolling member 32 may include a single ball or a single roller. Alternatively, the second rolling member 32 may include multiple balls. For example, if the second rolling member 32 includes multiple balls, the multiple balls may be arranged along the thickness direction (i.e., the Z direction) of the variable aperture 20.

[0395] Based on this, as shown in Figure 59 (a top view taken along the Z direction in Figure 44 ), the variable aperture 20 can include two drive assemblies, two first rolling elements 31, and two second rolling elements 32. The two drive assemblies are respectively a first-third drive mechanism 2401 and a second-third drive mechanism 2402. The first-third drive mechanism 2401 is positioned on the side of the first semi-annular sidewall 2121, and the second-third drive mechanism 2402 is positioned on the side of the second semi-annular sidewall 2122. The first-third drive mechanism 2401 is located between the two second rolling elements 32. The second-third drive mechanism 2402 is located between the two first rolling elements 31. Thus, by positioning the first-third drive mechanism 2401 on the side of the first semi-annular sidewall 2121 of the boss 212 and the second-third drive mechanism 2402 on the side of the second semi-annular sidewall 2122, the rotating bracket 22 can be evenly stressed during rotation.

[0396] Furthermore, by positioning the first and third drive mechanisms 2401 between the two second rolling elements 32 and increasing the number of second rolling elements 32, the displacement of the rotating bracket 22 can be further limited during reliability testing (such as rolling or drop testing) of the variable aperture 20 and during user use, effectively reducing the displacement of the rotating bracket 22. Furthermore, by positioning the second and third drive mechanisms 2402 between the two first rolling elements 31 and increasing the number of first rolling elements 31, the rotating bracket 22 can contact the first rolling elements 31 on both sides of the first and third drive mechanisms 2401, further improving the consistency, stability, and reliability of movement.

[0397] The above description is based on an example in which the variable aperture 20 has two driving components, namely the first third driving mechanism 2401 and the second third driving mechanism 2402 (also referred to as a bilaterally arranged third driving mechanism 24). In other embodiments of the present application, a single third driving mechanism 24 (also referred to as a unilaterally arranged third driving mechanism 24) may be provided.

[0398] As can be seen from the above, the magnet assembly 241 in Figure 44 is connected to the rotating bracket 22 serving as the stator. Based on this, in some embodiments of the present application, the coil 242 can be indirectly or directly connected to the fixed base 21 serving as the stator. The following examples illustrate the connection between the coil 242 and the fixed base 21.

[0399] For example, as shown in FIG60 , the variable aperture 20 may further include a flexible printed circuit (FPC) 27. The FPC 27 is disposed on the side of the fixing base 21 facing away from the blades 23 and is connected to the fixing base 21. The coil 242 passes through the fixing base 21 and is disposed on the side of the FPC 27 facing the rotating bracket 22. The coil 242 is connected to the FPC 27. For example, during the assembly process of the variable aperture 20, the coil 242 can be first assembled with the entire FPC 27. The FPC 27 with the coil 242 assembled therein can then be adhered to the lower surface of the fixing base 21 (i.e., the surface facing away from the cover plate 25) using a dispensing process. In this manner, the coil 242 can be indirectly connected to the fixing base 21 via the FPC 27. In this way, compared with the solution of bending the FPC into an arc around the circumferential side of the rotor, the FPC27 of the present application does not need to be bent. As shown in Figure 61 (the top view obtained along the Z direction in Figure 60), the FPC27 can be set into a flat plate structure parallel to the XY plane, thereby simplifying the manufacturing process of FPC27.

[0400] Furthermore, as can be seen from the above description, the rotation of the rotating bracket 22 relative to the fixed base 21 can drive the multiple blades 23 to move, thereby adjusting the aperture 100 enclosed by the multiple blades 23. Based on this, in order to control the rotational position of the rotating bracket 22 and achieve precise control of the aperture size of the aperture 100, the variable aperture 20 can further include a second driver chip (integrated circuit, IC) 28 as shown in FIG62 (a top view taken along the Z direction in FIG60 ). The second driver chip 28 is used to control the rotational position of the rotating bracket 22.

[0401] In some embodiments of the present application, as shown in Figure 62, the second driver chip 28 can be electrically connected to the FPC27, so that the second driver chip 28 is electrically connected to the circuit board 80 (as shown in Figure 3) of the camera module 10 through the FPC27, so that the processor on the circuit board 80 can transmit a control signal to the above-mentioned second driver chip 28, thereby enabling the second driver chip 28 to control the rotation position of the shaft bracket. For example, the above-mentioned second driver chip 28 can be a Hall chip. As can be seen from the above, the coil 242 shown in Figure 62 is connected to the FPC27. Therefore, in some embodiments, the coil 242 and the second driver chip 28 can be arranged on the FPC27. For example, the second driver chip 28 is fixed to the inside of the coil 242, thereby saving the fabric space on the FPC27.

[0402] On this basis, as shown in FIG63 , when the FPC 27 with the coil 242 is connected to the lower surface of the fixing base 21, in order to reduce the thickness of the variable aperture 20, the bottom plate 211 of the fixing base 21 can be provided with a coil mounting hole 123 (as shown in FIG44 ) that penetrates the bottom plate 211. The coil 242 can be mounted in the coil mounting hole 123, thereby allowing the coil 242 to pass through the fixing base 21. In this way, the thickness of the coil 242 partially overlaps with the thickness of the fixing base 21, thereby reducing the thickness of the variable aperture 20.

[0403] In addition, as shown in Figure 63, the coil 242 that needs to be powered is set on the side of the FPC27 facing the rotating bracket 22, and the coil 242 is connected to the FPC27. The coil 242 can be set opposite to the above-mentioned magnet assembly 241, and power can be directly supplied to the coil 242 through the metal traces on the FPC27, thereby simplifying the electrical connection structure of the variable aperture 20.

[0404] Based on this, it can be seen from the above that the lower surface of coil 242 (parallel to the XY plane) is connected to FPC 27, and the upper surface of magnet assembly 241 (parallel to the XY plane) is connected to rotating bracket 22. Therefore, coil 242 and magnet assembly 241 are arranged laterally (parallel to the XY plane) on the side of rotating bracket 22 facing away from blade 23. Therefore, compared to a solution in which the coil and magnet are arranged on the circumference of rotating bracket 22, the size of variable aperture 20 in the XY plane can be reduced.

[0405] Furthermore, the bottom plate 211 of the fixing base 21 is provided with a coil mounting hole 123 (as shown in FIG. 44 ) for accommodating the coil 242, and the side plate 213 of the fixing base 21 is provided with a first opening 130 (as shown in FIG. 44 ) for accommodating the magnet assembly 241. Therefore, along the Z direction shown in FIG. 63 , the thickness of the coil 242 overlaps with the thickness of the fixing base 21, and the thickness of the magnet assembly 241 overlaps with the thickness of the fixing base 21, thereby reducing the thickness of the variable aperture 20 in the Z direction.

[0406] In summary, the variable aperture 20 provided in the embodiment of the present application is a dynamic magnetic structure in which the FPC 27 is attached to the bottom of the fixing base 21, and the coil 242 and the magnet assembly 241 are arranged horizontally. It has the characteristics of a small number of components, simple structural process, small size, light weight, good reliability and low cost.

[0407] On this basis, to improve the reliability of the variable aperture 20, in some embodiments of the present application, the fixing base 21 may include a first plastic component 2101 and a first metal bracket 2102, as shown in FIG64 . The first plastic component 2101 may be made of a plastic material, such as polyester or polyethylene. The first plastic component 2101 may include the aforementioned base plate 211, boss 212, and side plates 213. Furthermore, the first metal bracket 2102 may be made of at least one metal element; for example, the first metal bracket 2102 may be stainless steel. The first metal bracket 2102 may include a first metal portion 214 and a second metal portion 215.

[0408] Based on this, as shown in FIG65 , the first metal bracket 2102 can be embedded in the first plastic part 2101, and the first metal bracket 2102 and the first plastic part 2101 are connected to form a first integral structural member 2100. In this way, the first integral structural member 2100 can be formed through an insert molding process. The first metal portion 214 can be located within the bottom plate 211 to strengthen the rigidity of the portion of the fixing base 21 located on the bottom plate 211. The second metal portion 215 is disposed within the side plate 213 to strengthen the rigidity of the portion of the fixing base 21 located on the side plate 213.

[0409] The first metal bracket 2102 in the mounting base 21 increases the mechanical strength of the mounting base 21. This reduces the likelihood of damage to the mounting base 21 during reliability testing (such as rolling or drop testing) or user use of the variable aperture 20, thereby extending the product's service life. As can be seen from the above, the material of the first metal bracket 2102 can include stainless steel. In the following embodiments, the metal components formed in the plastic part using the insert injection molding process can also be made of the aforementioned stainless steel.

[0410] On this basis, as shown in FIG66 , the first plastic part 2101 may have a first hollow area 140, and the first hollow area 140 may expose a portion of the surface of the first metal bracket 2102. For example, as shown in FIG64 , the second metal part 215 of the first metal bracket 2102 may include a metal plate 2151. The first hollow area 140 in FIG66 may expose at least a portion of the metal plate 2151. The exposed surface of the metal plate 2151 is used to make a product identification code. In this way, a product identification code for characterizing product-related information can be prepared directly on the first metal bracket 2102 without the need to separately set up a steel sheet for making and attaching the product identification code, thereby reducing the number of components and achieving the purpose of simplifying the manufacturing process. For example, the above-mentioned product identification code may be a QR code, numbers, letters or character codes, etc., which is not limited in this application.

[0411] In addition, as shown in FIG67 , the first metal bracket 2102 can also be grounded to the FPC 27. For example, a portion of the first metal portion 214 of the first metal bracket 2102 (the portion encircled by a dotted circle in FIG67 ) can be electrically connected to a copper-leaking area (not shown) on the FPC 27 via conductive adhesive to achieve grounding of the first metal bracket 2102, thereby reducing electromagnetic interference. This application does not impose any restrictions on the material of the conductive adhesive, as long as the conductive adhesive can ensure that the first metal bracket 2102 is grounded to the FPC 27.

[0412] The above is an example of the coil 242 in the third driving mechanism 24 being arranged on the FPC 27, and the FPC 27 being connected to the bottom of the fixing base 21, so that the coil 242 is indirectly connected to the fixing base 21 through the FPC 27, to illustrate the arrangement of the coil 242.

[0413] Alternatively, in other embodiments of the present application, as shown in FIG68 , the coil 242 is directly mounted on the fixed base 21 and connected to the fixed base 21. For example, a coil mounting groove 124 may be provided on the bottom plate 211 of the fixed base 21, and the coil 242 may be positioned within the coil mounting groove 124. The bottom of the coil mounting groove 124 may support the coil 242. Similarly, the fixed base 21, acting as a stator, remains stationary relative to the rotating bracket 22 during the process of changing the aperture of the aperture hole 100 of the variable aperture 20. This allows the coil 242 mounted on the fixed base 21 to remain stationary relative to the magnet assembly 241 mounted on the rotating bracket 22, ensuring that the variable aperture 20 remains a moving magnet variable aperture 20.

[0414] Similarly, the fixing base 21 shown in FIG68 can also be manufactured using the aforementioned insert injection molding process. In this case, as shown in FIG69 , the fixing base 21 can include a first plastic part 2101 and a first metal bracket 2102. The structures and technical effects of the first plastic part 2101 and the first metal bracket 2102 are the same as those described above and will not be further elaborated here.

[0415] On this basis, as shown in FIG68 , the second driver chip 28 can be disposed within the coil 242 . Based on this, in some embodiments of the present application, an FPC electrically connected to the second driver chip 28 may not be required in the variable aperture 20 . To electrically connect the circuit board 80 shown in FIG3 to the second driver chip 28 , as shown in FIG69 , the fixing base 21 can further include a metal ground trace 2103 , a metal signal trace 2104 , a metal ground terminal 2105 , and a metal signal terminal 2106 . The material of the metal ground trace 2103 , the metal signal trace 2104 , the metal ground terminal 2105 , and the metal signal terminal 2106 can be the same as or different from the material of the first metal bracket 2102 , and this is not limited in this application.

[0416] As shown in FIG70 , the metal signal trace 2104 can be electrically connected to the second driver chip 28 and the metal signal terminal 2106, and the metal ground trace 2103 can be electrically connected to the second driver chip 28 and the metal ground terminal 2105. The metal signal terminal 2106 and the metal ground terminal 2105 can be electrically connected to the circuit board 80 shown in FIG3 .

[0417] In this way, the metal ground trace 2103, the metal signal trace 2104, the metal ground terminal 2105, and the metal signal terminal 2106 can replace the FPC 27, so that the control signal generated by the processor on the circuit board 80 can be transmitted to the second driver chip 28 via the metal ground trace 2103, the metal signal trace 2104, the metal ground terminal 2105, and the metal signal terminal 2106. The present application does not limit the number of the metal ground terminals 2105 and the metal signal terminals 2106. FIG70 uses two metal ground terminals 2105 and two metal signal terminals 2106 as an example for illustration.

[0418] In addition, the metal grounding terminal 2105 can be grounded to the circuit board 80 shown in Figure 3. Therefore, as shown in Figure 70, the above-mentioned metal grounding trace 2103 can also be electrically connected to the first metal bracket 2102, so that the first metal bracket 2102 can be grounded to the circuit board 80 through the metal grounding trace 2103 and the metal grounding terminal 2105.

[0419] In this case, as shown in Figure 71, the first metal bracket 2102, the metal ground trace 2103, and the metal signal terminal 2106 are embedded in the first plastic part 2101. The metal signal terminal 2106, the metal ground trace 2103, the first metal bracket 2102, and the first plastic part 2101 are connected to form a first integral structural member 2100. As described above, the first integral structural member 2100 can be formed through an insert injection molding process. The technical effects of the first integral structural member 2100 are the same as those described above and will not be further described here. At least a portion of the metal ground terminal 2105 and the metal signal terminal 2106 are exposed outside the first plastic part 2101.

[0420] In this way, as shown in Figure 72, the rotating bracket 22, the magnet assembly 241, the coil 242, the blade 23 and other components are arranged in the accommodating space between the cover 25 and the fixed seat 21 to form the variable aperture 20. The variable aperture 20 can be electrically connected to the circuit board 30 shown in Figure 3 through the metal grounding terminal 2105 and the metal signal terminal 2106 exposed outside the above-mentioned accommodating space, so that there is no need to set an FPC inside the variable aperture 20, thereby achieving the purpose of simplifying the structure.

[0421] In summary, the above provides examples of the configuration of the coil 242 in the variable aperture 20. In the variable aperture 20 shown in FIG4 , the coil 242 is mounted on the FPC 27, which is connected to the mounting base 21. In the variable aperture 20 shown in FIG72 , no FPC is required; the coil 242 is directly connected to the mounting base 21. For any of the aforementioned variable aperture 20 configurations, the rotating bracket 22 can be rotatably connected to the mounting base 21. For ease of description, the following examples will use the variable aperture 20 shown in FIG4 with the FPC 27 as an example.

[0422] In some embodiments of the present application, as shown in FIG73 , the rotating bracket 22 may include a second plastic member 2201 and a second metal bracket 2202. The materials for the second plastic member 2201 and the second metal bracket 2202 are similarly available and are not further described here. As shown in FIG74 , the second metal bracket 2202 is embedded within the second plastic member 2201, and the second metal bracket 2202 and the second plastic member 2201 are connected to form a second integral structural member 2200.

[0423] Similarly, the second integral structural member 2200 can be formed by the aforementioned insert injection molding process. The second metal bracket 2202 in the rotating bracket 22 increases the mechanical strength of the rotating bracket 22. This reduces the likelihood of damage to the rotating bracket 22 when it is impacted during reliability testing (such as a rolling or drop test) or user use of the variable aperture 20, thereby extending the product's service life.

[0424] Furthermore, as shown in FIG74 , the magnet assembly 241 is connected to the second metal bracket 2202 and is attracted to each other. Thus, for example, as shown in FIG75 (a bottom view taken along the Z direction in FIG74 ), a portion of the second metal bracket 2202 can be used as a bearing portion of the magnet assembly 241, and glue is applied to the surface of the bearing portion facing one side of the magnet assembly 241, thereby connecting the magnet assembly 241 to the second metal bracket 2202.

[0425] On this basis, as shown in Figure 75 , since the second metal bracket 2202 can be attracted by the magnet assembly 241 and there is a strong attraction between the second metal bracket 2202 and the magnet assembly 241, the magnet assembly 241 can be prevented from falling off to the greatest extent. This increases the reliability of the connection between the assembly and the second metal bracket 2202. Furthermore, the need for a separate steel sheet connecting the rotating bracket 22 and the magnet assembly 241 can be avoided, thus simplifying the manufacturing process.

[0426] In some embodiments of the present application, the variable aperture 20 further includes a cover plate 25 as shown in FIG76 . The cover plate 25 is disposed on a side of the plurality of blades 23 facing away from the rotating bracket 22, and the cover plate 25 is disposed on the fixed base 21. The cover plate 25 is provided with a second light-transmitting hole 102. When the cover plate 25 is disposed on the fixed base 21, the second light-transmitting hole 102 can communicate with the aperture hole 100.

[0427] In some embodiments of the present application, as shown in FIG77 , the cover plate 25 may include a third plastic member 2501, a third metal bracket 2502, and a first gasket 2503 (soma). The materials for the third plastic member 2501 and the third metal bracket 2502 are similarly available and are not further described here. As shown in FIG78 , the third metal bracket 2502 is embedded within the third plastic member 2501, and the third metal bracket 2502 and the third plastic member 2501 are connected to form a third integral structural member 2500.

[0428] Similarly, the third integral structural member 2500 can be formed through the aforementioned insert injection molding process. The presence of the third metal bracket 2502 in the cover plate 25 increases the mechanical strength of the cover plate 25. This reduces the likelihood of damage to the cover plate 25 when it is impacted during reliability testing (such as a rolling or drop test) or user use of the variable aperture 20, thereby extending the product's service life.

[0429] In some embodiments of the present application, as further shown in FIG. 77 , the third metal bracket 2502 includes multiple hollow portions 25011 extending through the third metal bracket 2502. The hollow portions 25011 are disposed around the second light-transmitting hole 102. In this manner, the second light-transmitting hole 102, which communicates with the aperture hole 100, allows external light to enter the aperture hole 100 through the second light-transmitting hole. Furthermore, by providing the third metal bracket 2502 with multiple hollow portions 25011, the weight of the entire third metal bracket 2502 can be reduced compared to a cover plate 25 constructed entirely of metal, thereby reducing the weight of the cover plate 25 and the entire variable aperture 20.

[0430] In addition, as shown in Figure 79, the third metal bracket 2502 is connected to the first metal bracket 2102. For example, the third metal bracket 2502 in the cover 25 can be connected to the first metal bracket 2102 in the fixing seat 21 by welding, thereby increasing the reliability of the connection between the cover 25 and the fixing seat 21 and reducing the chance of the cover 25 falling off.

[0431] In some embodiments of the present application, the cover plate 25 may be provided with multiple welding locations a1 (as shown in FIG. 77 , with six welding locations a1 as an example). These multiple welding locations a1 may be arranged around the circumference of the aperture 100. Furthermore, as shown in FIG. 64 , the second metal portion 215 of the first metal bracket 2102 may also include multiple metal rods 2152 and multiple welding portions 2153, with each metal rod 2152 connected to a welding portion 2153. If the cover plate 25 has six welding locations a1 (as shown in FIG. 79 ), the first metal bracket 2102 may have six metal rods 2152 and six welding portions 2153. In this case, one welding portion 2153 of the first metal bracket 2102 may be welded to one welding location a1 of the cover plate 25, thereby improving the connection stability between the cover plate 25 and the fixing base 21. Furthermore, riveting and glue dispensing processes can be avoided, enhancing reliability and strength while simplifying the process flow of the motor 41 and reducing overall costs.

[0432] On this basis, as shown in Figure 79, after the third metal bracket 2502 is welded to the first metal bracket 2102, the third metal bracket 2502 can be electrically connected to the first metal bracket 2102, so that the third metal bracket 2502 can be grounded to the above-mentioned FPC27 through the first metal bracket 2102 (as shown in Figure 76).

[0433] In this way, the manufacturing process of grounding the cover plate 25 can be simplified. In the related art, as shown in FIG80 , the metal cover plate mainly composed of a steel plate needs to be electrically connected to the FPC lead-out portion by dispensing glue and then covered with a dispensing protective glue at the dispensing position. Compared with the related art, the present application only needs to electrically connect the third metal bracket 2502 in the cover plate 25 shown in FIG79 to the first metal bracket 2102 in the fixing seat 21, for example, by welding or dispensing glue, thereby eliminating the need for additionally setting up an FPC lead-out portion, and two processes of dispensing glue layer and dispensing protective glue for electrically connecting the FPC lead-out portion to the metal cover plate, thereby achieving the purpose of simplifying the structure, reducing the manufacturing process, and reducing the cost of the variable aperture 20.

[0434] Alternatively, in other embodiments of the present application, the third metal bracket 2502 in the cover 25 shown in Figure 79 can be grounded to the first metal bracket 2102 in the fixing base 21 by dispensing glue (for example, dispensing silver glue) or the like.

[0435] Furthermore, as shown in FIG77 , the first gasket 2503 is laminated on the side of the third integral structural member 2500 (including the third plastic member 2501 and the third metal bracket 2502) facing away from the blades 23 (shown in FIG76 ). The first gasket 2503 is located on the upper surface of the variable aperture 20. The first gasket 2503 can partially obscure the structure of the blades 23 below the cover plate 25, so that the side of the first gasket 2503 facing away from the third integral structure serves as the user-visible exterior surface, achieving a decorative effect and enhancing the quality and sophistication of the exterior appearance. This also maximizes the control area of ​​the external product appearance and meets industrial design (ID) requirements.

[0436] Furthermore, because the third metal bracket 2502 in the cover plate 25 is located within the third plastic component 2501, and the cover plate 25 is positioned on the side of the plurality of blades 23 facing away from the rotating bracket 22, during the rotation of the blades 23, the component that directly contacts and rubs against the blades 23 is the third plastic component 2501 in the cover plate 25. The surface of the third plastic component 2501 can have a lower coefficient of friction than that of metal, thereby reducing the friction between the blades 23 and the third plastic component 2501, further reducing the likelihood of blade 23 wear (e.g., whitening) during reliability testing or use.

[0437] In some embodiments of the present application, the second gasket 26 in FIG. 60 , the first gasket 2503 in FIG. 77 , and the blade 23 in FIG. 76 may be made of the same material. The specular reflectance G (Gloss), optical density OD, L value, a value, and b value of the material color triplet may be: R ≤ 0.3%; OD ≥ 5.0; L ≤ 8; |a| ≤ 1; and |b| ≤ 1.

[0438] The specular reflectivity G can be measured using a multi-angle gloss meter (for example, a 60° angle, commonly used for visual inspection). The lower the specular reflectivity G, the more matte the surface. The smaller the L value, the higher the blackness. The a and b values ​​represent the chromaticity index, representing the degree of color cast. The higher the a and b values, the darker the hue. Furthermore, the higher the optical density (OD), the lower the transmittance and the higher the absorptivity. When the optical density (OD) is above 5, the transmittance is much less than 1%.

[0439] In this way, when the mirror reflectivity G, optical density value OD, L value, a value and b value in the material color triplet of the second gasket 26, the first gasket 2503 and the blade 23 are respectively: R≤0.3%; OD value≥5.0; L≤8; |a|≤1; |b|≤1, the materials of the above-mentioned second gasket 26, the first gasket 2503 and the blade 23 can all be ultra-black materials, so that when the blade 23 is in motion, the color and glossiness of the parts of the first gasket 2503, the second gasket 26 and the blade 23 that the user can see are consistent, reducing the probability of color difference between the above-mentioned three components and improving the appearance quality.

[0440] Furthermore, when the second gasket 26, the first gasket 2503, and the blades 23 are all made of the aforementioned ultra-black material, the ultra-black material has a good blackness, meets the design requirements, and has good wear resistance. Alternatively, the second gasket 26, the first gasket 2503, and the blades 23 can be made of a substrate coated or attached with the ultra-black material, which can also achieve the appearance consistency requirements.

[0441] In addition, the second gasket 26, the first gasket 2503, and the blade 23 are made of the same material and their mechanical properties can meet the following requirements: modulus ≥ 3000 MPa, yield strength / fracture strength ≥ 80 MPa (if there is no obvious yield phenomenon, only the fracture strength needs to be considered), and elongation at break ≥ 10%. In this way, during the reliability test, it can pass 2 or 5 rounds of drop tests and 500 roller tests. Among them, when the variable aperture 20 undergoes the roller test more than 1000 times, there is a certain risk. In addition, the life of the variable aperture 20 can reach 250,000 times.

[0442] In some embodiments of the present application, as shown in FIG81 , the fixed seat 21 may further include an anti-collision structure 34. The anti-collision structure 34 may be disposed around the periphery of the rotating bracket 22 and protrude from the surface of the cover plate 25 facing away from the blades 23. For example, the height D of the anti-collision structure 34 may be approximately 0.08 mm. For example, as shown in FIG79 , the anti-collision structure 34 may be disposed on the side of the side plate 213 of the fixed seat 21 facing away from the bottom plate 211, and the fixed seat 21 may have four anti-collision structures 34. The present application does not limit the number of anti-collision structures 34.

[0443] In this way, the fixing seat 21 surrounds the periphery of the rotating bracket 22 and protrudes from the cover 25, such as the above-mentioned anti-collision structure 34 can contact the lens or other decorative parts covering the camera module 10 on the back shell 03 of the electronic device 01 (as shown in Figure 1), thereby reducing the direct contact friction between the cover 25 and the above-mentioned lens or other device parts during product testing (for example, rolling reliability testing) or user use, so as to reduce the poor appearance caused by the wear of the top surface of the cover 25, thereby improving the appearance, life and reliability of the product.

[0444] Furthermore, as can be seen from the above description, the variable aperture 20 can be connected to the lens assembly 40 in Figure 3 . To improve the reliability of the connection between the variable aperture 20 and the lens assembly 40, in some embodiments of the present application, as shown in Figure 82 , the fixing base 21 further includes an adhesive structure 35. The adhesive structure 35 can be disposed on a surface of the bottom plate 211 of the fixing base 21 facing away from the side plate 213. The bottom surface A1 of the adhesive structure 35 and the surface A2 of the bottom plate 211 facing away from the side plate 213 can both be connected to the lens assembly 40 located below the variable aperture 20.

[0445] In some embodiments, a protrusion is provided on a side of the variable aperture close to the lens assembly, and a groove is provided on the lens assembly, and the protrusion matches the groove.

[0446] In this way, the surfaces connecting the iris diaphragm 20 and the lens assembly 40 (i.e., surfaces A1 and A2 of the fixing base 21) can be made uneven. Furthermore, as shown in FIG83 , the lens assembly 40 can have bonding grooves 36 that mate with the bonding structure 35. Therefore, the surfaces connecting the lens assembly 40 and the iris diaphragm 20 can also be made uneven, matching the surfaces A1 and A2 described above. This can improve the stability of the connection between the iris diaphragm 20 and the lens assembly 40 during bonding.

[0447] For example, as shown in FIG82 , the vertical projection of the adhesive structure 35 on the base plate 211 is fan-shaped, having a first arcuate edge 351 and a second arcuate edge 352. The arc length of the first arcuate edge 351 can be greater than the arc length of the second arcuate edge 352. The first arcuate edge 351 is positioned away from the boss 212 relative to the second arcuate edge 352. In this case, the adhesive structure 35 can be a dovetail structure. As shown in FIG83 , the adhesive groove 36 that mates with the lens assembly 40 and the adhesive structure 35 can be a dovetail groove that matches the aforementioned dovetail structure.

[0448] Based on this, when the camera module 10 is in operation, the variable aperture 20 is positioned in a horizontal plane (a surface perpendicular to the optical axis of the variable aperture 20), and the interlocking dovetail-shaped adhesive structure 35 and adhesive groove 36 prevent shearing in both the X and Y directions. Furthermore, along the rotational direction of the blades 23 of the variable aperture 20, the sidewalls of the dovetail structure and the dovetail groove have a large contact area, effectively limiting the position of the variable aperture 20.

[0449] The above embodiment describes the structure of the camera module. The following describes the circuits and application scenarios related to the camera module in the electronic device in conjunction with Figures 84, 85, and 86.

[0450] As shown in FIG84 , the electronic device further includes a processor 5 , and the camera module 10 is electrically connected to the processor 5 .

[0451] 39 , the camera module 10 includes a module circuit board 80 , and the module circuit board 80 is electrically connected to the processor 5 , for example, via a third FPC 804 .

[0452] In some embodiments, the processor 5 may include one or more processing units, for example, the processor may include an application processor (AP), a modem processor, a graphics processing unit (GPU), an image signal processor (ISP), a controller, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural-network processing unit (NPU), etc. Different processing units may be independent devices or integrated into one or more processors.

[0453] In the present application, the processor 5 may be a microprocessor. The processor 5 is configured to receive and process electrical signals containing image information from the camera module. The processor 5 may calculate the lens movement amount based on the lens position and control the lens movement of the camera module based on the lens movement amount.

[0454] Among them, the processor 5 is electrically connected to the driving chip, and can control the operation of the first driving mechanism 418, the second driving mechanism 421 and the third driving mechanism 24 respectively through the driving chip to achieve the above-mentioned anti-shake, focus, and adjustment of light input control functions.

[0455] As shown in FIG39 , a first driving chip 803 is provided on the module circuit board 80 . The first driving mechanism 418 and the second driving mechanism 421 are both electrically connected to the first driving chip 803 , and the first driving chip 803 is electrically connected to the processor 5 .

[0456] 33-39 , the first driving mechanism 418 is electrically connected to the first FPC 61 through the first conductive lead 621 , and is electrically connected to the first driving chip 803 through the first FPC 61 . The second driving mechanism 421 is electrically connected to the first driving chip 803 through the second conductive lead 63 .

[0457] In this way, the first driving chip 803 can control the first driving mechanism 418 and the second driving mechanism 421 .

[0458] During operation, the first driving chip can apply a first current to the first driving mechanism, so that the first driving mechanism drives the first bracket and the lens assembly to move along the optical axis of the lens assembly.

[0459] The first driving chip may also apply a second current to the second driving mechanism, so that the second driving mechanism drives the first bracket, the second bracket and the lens assembly to move along a plane perpendicular to the optical axis of the lens assembly.

[0460] In addition, as shown in Figure 34, the electronic device also includes: a position sensor 11, the position sensor 11 is electrically connected to the first driving chip 803, the position sensor 11 is used to detect the position of the second bracket 414 relative to the base 413, and the first driving chip 803 is used to control the second driving mechanism 421 according to the position information detected by the position sensor 11.

[0461] The present embodiment does not limit the structure of the position sensor 11. The position sensor 11 includes, for example, a Hall sensor and a gyroscope.

[0462] The first driver chip 803 is electrically connected to the position sensor 11 and can obtain measurement data from the position sensor 11. The measurement data may include, for example, the camera module's jitter amount and direction as measured by the gyroscope, and the camera module's current position data as measured by the Hall sensor. Based on the obtained jitter amount, jitter direction, and the second bracket's current position data, the first driver chip 803 calculates and determines target adjustment data for the second bracket, and controls the second bracket adjustment device to adjust the second bracket's position according to the target adjustment data, thereby achieving anti-shake camera recording.

[0463] 38 , the camera module further includes a second driver chip 28 , which is electrically connected to the processor 5 and the third driver mechanism, and is used to control the third driver mechanism 24 .

[0464] Among them, the third driving mechanism 24 is electrically connected to the second driving chip 28, the second driving chip 28 is electrically connected to the second FPC 27, the first end of the second spring arm 58 is connected to the second FPC 27, and the second end of the second spring arm 58 is electrically connected to the first FPC 61 through the third conductive lead 622, so that the second driving chip 28 is electrically connected to the module circuit board 80 through the second FPC 27, the second spring arm 58, the third conductive lead 622 and the first FPC 61.

[0465] In this way, the second driving chip 28 can control the third driving mechanism 24 .

[0466] During operation, the second driving chip 28 can apply a third current to the third driving mechanism, so that the third driving mechanism drives the rotating bracket of the variable aperture to rotate relative to the fixed seat.

[0467] In an optional implementation, a Hall sensor is integrated into the second driver chip 28 .

[0468] Figure 85 is a block diagram of the structure of an electronic device provided in an embodiment of the present application. Referring to Figure 85 , electronic device 1 also includes a communication bus 15, at least one communication interface 13, and a memory 14. It should be understood that Figure 85 is merely an example of electronic device 1 and does not limit electronic device 1. Electronic device 1 may include more or fewer components than shown in Figure 85 , or may combine certain components or different components. For example, electronic device 1 may also include input / output devices, network access devices, etc.

[0469] Position sensors include gyro sensors and hall sensors.

[0470] The electronic device also includes: an external memory interface, an internal memory, a universal serial bus (USB) interface, a charging management module, a power management module, a battery, an antenna, a mobile communication module, a wireless communication module, an audio module, a speaker, a receiver, a microphone, an earphone interface, a sensor module, buttons, and a camera, etc. The sensor module may include a pressure sensor, a gyroscope sensor, an air pressure sensor, a magnetic sensor, an acceleration sensor, a distance sensor, a proximity light sensor, a fingerprint sensor, a temperature sensor, a touch sensor, an ambient light sensor, and a bone conduction sensor, etc.

[0471] The processor 5 is communicatively connected to at least one communication interface 13, the memory 14, the display screen 2, and the control circuit via a communication bus 15. The processor 5 can be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor. The processor is the control center of the electronic device 1, connecting the various components of the entire electronic device 1 using various interfaces and lines.

[0472] The communication bus 15 may include a pathway for transmitting information between the aforementioned components.

[0473] The communication interface 13 uses any transceiver or other device for communicating with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area network (WLAN), etc.

[0474] Memory 14 can be used to store computer programs and / or modules. Processor 5 implements various functions of electronic device 1 by running or executing computer programs and / or modules stored in memory 14 and accessing data stored in memory 14. Memory 14 may primarily include a program storage area and a data storage area. The program storage area may store an operating system and application programs required for various functions (such as sound playback and image playback), while the data storage area may store data generated based on the use of electronic device 1 (such as audio data and a phone book). Memory 14 may also include high-speed random access memory (RAM) and non-volatile memory, such as a hard disk, internal memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) card, a flash memory card, multiple disk storage devices, flash memory devices, or other volatile solid-state storage devices. Memory 14 may be independent and connected to processor 5 via a communication bus 15. Memory 14 may also be integrated with processor 5.

[0475] In a specific implementation, as an embodiment, the processor 5 may include one or more CPUs, such as CPU0 and CPU1.

[0476] In a specific implementation, as an embodiment, the electronic device 1 may include multiple processors, such as the processor 5 in FIG85 . Each of these processors may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. The processor herein may refer to one or more devices, circuits, and / or processing cores for processing data (e.g., computer program instructions).

[0477] It should be understood that the above-mentioned system, when implementing its functions, is merely illustrated by the division of the above-mentioned functional modules. In actual applications, the above-mentioned functions can be distributed and completed by different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. In addition, the device and method embodiments provided in the above-mentioned embodiments are based on the same concept. The specific implementation process is detailed in the method embodiment and will not be repeated here.

[0478] In some embodiments of the present application, the processor 5 can control the operation of the driving mechanism in response to a trigger operation input by the user. The following is an exemplary description of how the processor 5 of the electronic device 1 determines the specific circumstances of receiving a trigger operation input by the user.

[0479] As shown in FIG85 , the electronic device 1 further includes, for example, a detection element 12 electrically connected to the processor 5. The detection element 12 is configured to detect a trigger operation input by a user. The processor 5 is configured to control the first driver chip 171 in response to the user's trigger operation to achieve autofocus or anti-shake. Alternatively, the processor 5 can control the second driver chip 172 in response to the user's trigger operation to adjust the amount of incoming light.

[0480] In some embodiments, the trigger operation input by the user includes a trigger operation for starting a camera; illustratively, the user's trigger operation includes: click trigger, voice trigger, or action trigger.

[0481] In one implementation of an embodiment of the present application, as shown in FIG86 , this case is exemplified by taking a mobile phone as an electronic device. As shown in FIG86 , when the electronic device shown in this embodiment is installed with a camera application corresponding to a camera module, the interface of the electronic device 1 can display the first icon 1001 of the camera application. The camera application includes application software that can apply the camera module, such as WeChat, QQ, and the like. The detection element is, for example, the display screen of the electronic device. As shown in FIG86 , when the display screen of the electronic device detects that the first icon 1001 of the camera application receives a click trigger event input by the user, the processor responds to the click operation and can control the camera module 10 to realize the above-mentioned anti-shake, focus, and light input control functions.

[0482] It should be noted that, for the sake of simplicity, the aforementioned embodiments are all expressed as a series of action combinations. However, those skilled in the art should be aware that this application is not limited to the described order of actions, because according to this application, some steps can be performed in other orders or simultaneously.

[0483] In the above embodiments, the description of each embodiment has its own focus. For components that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0484] The steps in the method of the embodiment of the present application can be adjusted in order, combined and deleted according to actual needs.

[0485] The above is only a specific embodiment of the present application, but the scope of protection of this application is not limited to this. Any changes or substitutions within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A camera module (10), characterized in that: include: A base (413), a first bracket (415), a second bracket (414), a lens assembly (40), a variable aperture (20), a first driving mechanism (418), a second driving mechanism (421), and a third driving mechanism (24); The first bracket (415) and the second bracket (414) are both arranged on the base (413), and the second bracket (414) is sleeved on the outside of the first bracket (415); The first bracket (415) has a cavity, the lens assembly (40) is arranged in the cavity, and the optical axis of the lens assembly (40) is parallel to the central axis of the cavity; The variable aperture (20) is arranged on a side of the lens assembly (40) away from the base (413), and the third driving mechanism (24) is connected to the variable aperture (20); The first driving mechanism (418) is arranged between the first bracket (415) and the second bracket (414), and the first driving mechanism (418) is used to drive the first bracket (415) and the lens assembly (40) to move along the optical axis of the lens assembly (40); The second driving mechanism (421) is arranged between the second bracket (414) and the base (413), and the second driving mechanism (421) is used to drive the first bracket (415), the second bracket (414) and the lens assembly (40) to move along a plane perpendicular to the optical axis of the lens assembly (40), and the second driving mechanism (421) includes an SMA wire (4212), and the second bracket (414) is connected to the base (413) via the SMA wire (4212).

2. The camera module (10) according to claim 1, characterized in that The lens assembly (40) comprises a first side surface (4001) and a second side surface (4002), wherein the curvature of the first side surface (4001) is smaller than the curvature of the second side surface (4002).

3. The camera module (10) according to claim 2, characterized in that: The first side surface (4001) is a plane, and the second side surface (4002) is an arcuate surface.

4. The camera module (10) according to claim 2 or 3, characterized in that: The shape of the first bracket (415) is adapted to the shape of the lens assembly (40).

5. The camera module (10) according to any one of claims 1 to 4, characterized in that: The camera module (10) further includes an elastic member (50), the elastic member (50) being used to provide elastic force for the second bracket (414) and the lens assembly (40) to move from a first position to a second position, the direction from the first position to the second position being along the optical axis of the lens assembly (40), the first position being closer to the base (413) than the second position, the first driving mechanism (418) driving the second bracket (414) and the lens assembly (40) to move along the optical axis of the lens assembly (40) between the second position and a third position, the second position being between the first position and the third position.

6. The camera module (10) according to claim 5, characterized in that: The elastic member (50) is arranged below the first bracket (415); when the first bracket (415) and the lens assembly (40) are located at the first position, the first bracket (415) contacts the elastic member (50), and the elastic member (50) is deformed, generating an elastic force directed from the first position to the second position.

7. The camera module (10) according to claim 6, characterized in that: When the first bracket (415) and the lens assembly (40) move between the second position and the third position, the first bracket (415) is separated from the elastic member (50).

8. The camera module (10) according to any one of claims 5 to 7, characterized in that: The elastic member (50) comprises a first support ear (501) and a second support ear (502), and an elastic section (503) connected between the first support ear (501) and the second support ear (502), wherein the first support ear (501) and the second support ear (502) are both fixed on the second bracket (414), and the elastic section (503) extends to the bottom of the first bracket (415); When the first bracket (415) and the lens assembly (40) are located at the first position, the first bracket (415) contacts the elastic section (503), and the elastic section (503) is deformed, generating an elastic force directed from the first position to the second position.

9. The camera module (10) according to any one of claims 1 to 8, characterized in that: The camera module (10) includes a slide bar (53), the slide bar (53) is connected to the second bracket (414), a slide groove (531) is provided on the first bracket (415), and the slide bar (53) is slidably connected to the slide groove (531).

10. The camera module (10) according to claim 9, characterized in that: The camera module (10) further includes a first magnetic component (54), wherein the first magnetic component (54) is used to generate an attractive force between the first bracket (415) and the sliding rod (53).

11. The camera module (10) according to claim 10, characterized in that: The first driving mechanism (418) includes a magnet (4181) and a first coil (4182) opposite to the magnet (4181), one of the magnet (4181) and the first coil (4182) is arranged on the second bracket (414), and the other is arranged on the first bracket (415), and the first magnetic component (54) is farther away from the magnet (4181) than the sliding rod (53).

12. The camera module (10) according to any one of claims 1 to 11, characterized in that: The camera module (10) comprises: a plurality of rolling balls (424), wherein the plurality of rolling balls (424) are arranged between the base (413) and the second bracket (414).

13. The camera module (10) according to claim 12, characterized in that: The camera module (10) further includes: a second magnetic component (426), wherein the second magnetic component (426) is arranged between the base (413) and the second bracket (414), and under the action of the magnetic attraction of the second magnetic component (426), the second bracket (414) and the ball (424) are in contact, wherein when the second bracket (414) and the ball (424) are in contact, there is a gap between the second bracket (414) and the base (413).

14. The camera module (10) according to any one of claims 1 to 13, characterized in that: The second driving mechanism (421) includes a movable claw (4213) and a fixed claw (4211), the SMA wire (4212) connects the movable claw (4213) and the fixed claw (4211), the movable claw (4213) is fixed on the second bracket (414), and the fixed claw (4211) is fixed on the base (413).

15. The camera module (10) according to any one of claims 1 to 14, characterized in that: The second bracket (414) includes: A main body (414A), wherein the main body (414A) has a chamber, the first bracket (415) is disposed in the chamber, and the first driving mechanism (418) is disposed between the main body (414A) and the first bracket (415); An extension portion (414B), wherein the extension portion (414B) is arranged on a side of the main body close to the base (413), and the extension portion (414B) extends along the circumference of the outer edge of the main body in a direction away from the main body (414A), and a gap is formed between the extension portion (414B) and the base (413), and the second driving mechanism (421) is arranged in the gap.

16. The camera module (10) according to any one of claims 1 to 15, characterized in that: The camera module (10) further includes a module circuit board (80) and an electrical connection structure; The first driving mechanism (418), the second driving mechanism (421) and the third driving mechanism (24) are all electrically connected to the circuit board of the camera driving motor via the electrical connection structure.

17. The camera module (10) according to claim 16, characterized in that: The electrical connection structure includes: a first FPC (61), the first FPC (61) being disposed on the second bracket (414), the first FPC (61) being electrically connected to the module circuit board (80); a first conductive lead (621), the first conductive lead (621) being arranged on the second bracket (414), a first end of the first conductive lead (621) being electrically connected to the first driving mechanism (418), and a second end of the first conductive lead (621) being electrically connected to the first FPC (61); a first spring arm (427), wherein a first end of the first spring arm (427) is connected to the second bracket (414), and a second end of the first spring arm (427) is fixed to the base (413); a second conductive lead (63), the second conductive lead (63) being disposed on the base (413), and the second driving mechanism (421) being electrically connected to the module circuit board (80) via the second conductive lead (63); a grounding lead (66), the grounding lead (66) being arranged on the base (413), one end of the grounding lead (66) being electrically connected to the second end of the first spring arm (427), and the other end of the grounding lead (66) being electrically connected to the module circuit board (80) of the camera module (10); A second spring arm (58), a portion of which is electrically connected to the variable aperture (20).

18. The camera module (10) according to claim 17, characterized in that: A first driving chip (803) is provided on the module circuit board (80), and the first driving mechanism (418) is electrically connected to the first FPC (61) via the first conductive lead (621), and is also electrically connected to the first driving chip (803) via the first FPC (61).

19. The camera module (10) according to claim 18, characterized in that: The second driving mechanism (421) is electrically connected to the first driving chip (803) via the second conductive lead (63).

20. The camera module (10) according to claim 18 or 19, characterized in that: The camera module (10) further includes a position sensor (11), the position sensor (11) being used to detect the position of the second bracket (414) relative to the base (413), and the position sensor (11) being electrically connected to the first driving chip (803) via the first FPC (61).

21. The camera module (10) according to any one of claims 17 to 20, characterized in that: The electrical connection structure further includes: a third conductive lead (622), the third conductive lead (622) being arranged in the second bracket (414), the variable aperture (20) including: a second driving chip (28) and a second FPC (27), the third driving mechanism (24) being electrically connected to the second driving chip (28), the second driving chip (28) being electrically connected to the second FPC (27), a portion of the second spring arm (58) being connected to the second FPC (27), and another portion of the second spring arm (58) being electrically connected to the first FPC (61) via the third conductive lead (622), so that the second driving chip (28) is electrically connected to the module circuit board (80) via the second FPC (27), the second spring arm (58), the third conductive lead (622) and the first FPC (61).

22. The camera module (10) according to claim 21, characterized in that: The variable aperture (20) further comprises: a fixed seat (21) having a first light-transmitting hole (101); the fixed seat (21) comprises a bottom plate (211) and a side plate (213); the side plate (213) is arranged on the bottom plate (211) and is arranged around the first light-transmitting hole (101); a first opening (130) is formed on the side plate (213), and the first opening (130) passes through the side plate (213) in a direction perpendicular to the bottom plate (211); A rotating bracket (22) is located in the fixing seat (21) and is rotatably connected to the fixing seat (21); the rotating bracket (22) is arranged around the periphery of the first light-transmitting hole (101), and the rotating bracket (22) includes an annular portion (221) and a lug (222); the annular portion (221) is arranged around the periphery of the first light-transmitting hole (101), and the lug (222) is arranged on the side wall of the annular portion (221); the lug (222) is located in the first opening (130), and the first opening (130) exposes the side surface of the lug (222); A plurality of blades (23) are provided on the rotating bracket (22), the blades (23) are slidably connected to the annular portion (221), and are rotatably connected to the fixed seat (21); the plurality of blades (23) are distributed in an annular shape to surround an aperture (100), and the aperture (100) is connected to the first light-transmitting hole (101); The third driving mechanism (24) comprises: A magnet assembly (241) is provided on a side of the lug (222) facing away from the blade (23) and is connected to the rotating bracket (22); The second coil (242) is arranged on a side of the magnet assembly (241) facing the fixing seat (21).

23. The camera module (10) according to claim 22, characterized in that: The second FPC (27) is arranged on a side of the fixing seat (21) away from the blade (23), and the second FPC (27) is connected to the fixing seat (21); The second coil (242) passes through the fixing seat (21) and is arranged on a side of the second FPC (27) facing the rotating bracket (22), and the second coil (242) is connected to the second FPC (27).

24. The camera module (10) according to claim 22, characterized in that The fixing seat (21) comprises: a first plastic part (2101); A first metal bracket (2102) is embedded in the first plastic part (2101), and the first metal bracket (2102) and the first plastic part (2101) are connected to form a first integrated structural part (2100); the first metal bracket (2102) is grounded to the second FPC (27).

25. The camera module (10) according to claim 22, characterized in that: The second coil (242) is disposed on the fixing seat (21) and is directly connected to the fixing seat (21).

26. The camera module (10) according to claim 25, characterized in that The fixing seat (21) comprises: a first plastic part (2101); A first metal bracket (2102) is embedded in the first plastic part (2101); A metal grounding trace (2103) is embedded in the first plastic part (2101), and the metal grounding trace (2103) is connected to the first metal bracket (2102); A metal signal trace (2104) is embedded in the first plastic part (2101), and the metal signal trace (2104), the metal ground trace (2103), the first metal bracket (2102) and the first plastic part (2101) are connected to form a first integrated structural part (2100); A metal grounding terminal (2105) is provided outside the first plastic part (2101), and the metal grounding terminal (2105) is connected to the metal grounding trace (2103); The metal signal terminal (2106) is arranged outside the first plastic part (2101), and the metal signal terminal (2106) is connected to the metal signal trace (2104).

27. The camera module (10) according to any one of claims 1 to 26, characterized in that: A protrusion is provided on a side of the variable aperture (20) close to the lens assembly (40), and a groove is provided on the lens assembly (40), and the protrusion matches the groove.

28. The camera module (10) according to claim 27, characterized in that: The cross-section of the groove is in a dovetail shape.

29. An electronic device, characterized in that: include: A housing, and a camera module (10) as described in any one of claims 1 to 28, wherein the housing comprises at least one lens assembly (40) hole; and the camera module (10) is arranged in the lens assembly (40) hole.

30. The electronic device according to claim 29, wherein The electronic device further comprises a processor (5); The camera module (10) comprises a module circuit board (80), and the module circuit board (80) is connected to the processing module via a third FPC (804). The processor (5) is electrically connected.

31. The electronic device according to claim 29 or 30, characterized in that A first driving chip (803) is provided on the module circuit board (80), the first driving mechanism (418) and the second driving mechanism (421) are both electrically connected to the first driving chip (803), and the first driving chip (803) is electrically connected to the processor (5); The first driving chip (803) is used to control the first driving mechanism (418) and the second driving mechanism (421).

32. The electronic device according to claim 31, wherein: The electronic device further comprises: a position sensor (11), the position sensor (11) being electrically connected to the first drive chip (803), the position sensor (11) being used to detect the position of the second bracket (414) relative to the base (413), and the first drive chip (803) being used to control the second drive mechanism (421) according to the position information detected by the position sensor (11).

33. The electronic device according to claim 32, characterized in that The position sensor (11) includes a Hall sensor and a gyroscope.

34. The electronic device according to any one of claims 30 to 33, characterized in that: The variable aperture (20) comprises: a second drive chip (28), the second drive chip (28) being electrically connected to the processor (5), the second drive chip (28) being electrically connected to a third drive mechanism, and the second drive chip (28) being used to control the third drive mechanism.

35. The electronic device according to claim 34, characterized in that The second driving chip (28) is integrated with a Hall sensor.

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