Variable aperture, camera module and electronic equipment

Abstract

The invention discloses a variable aperture, a camera module and electronic equipment. The iris ring (100) comprises a fixing base (10), a rotating support (20), a coil (32), a magnetic piece (31), a driving chip (40), a first electric connecting piece (51), a second electric connecting piece (52) and a plurality of blades (62). And the rotating bracket (20) is rotationally connected with the fixed seat (10). And one part of the blade (62) is connected with the fixed seat (10), and the other part is connected with the rotating bracket (20). The plurality of blades (62) together enclose an aperture hole (101). The coil (32) is arranged on the rotating support (20), and the magnetic piece (31) is arranged on the fixed seat (10). The coil (32) is used for driving the rotating support (20) to rotate relative to the fixing base (10), and the aperture of the aperture hole (101) changes. The driving chip (40) and the first electric connecting piece (51) are both arranged on the fixed seat (10), the second electric connecting piece (52) is arranged on the rotating support (20), and the coil (32) is electrically connected to a power supply interface (433) of the driving chip (40) through the second electric connecting piece (52) and the first electric connecting piece (51). A line for connecting the data interface (432) of the driving chip (40) from the rotating bracket (20) to the fixed seat (10) is omitted, and the electric connection structure is simplified. The resistance is small when the rotating support rotates, and the power consumption of the variable aperture is low.

Description

Variable aperture, camera modules and electronic equipment

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on February 15, 2023, with application number 202310140841.1, and priority to the Chinese patent application entitled “Variable aperture, camera module and electronic device”, all contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of camera technology, and in particular to a variable aperture, a camera module, and an electronic device. Background Art

[0003] In recent years, major manufacturers have put forward more stringent requirements on the imaging quality of camera modules. By changing the size of the aperture hole of the variable aperture, the light flux entering the variable aperture is adjusted, thereby improving the imaging quality of the camera module. In the traditional variable aperture, the driver chip and the coil are arranged on the rotating bracket. The driver chip outputs the working current to the coil. After the coil is energized, it cooperates with the magnetic part on the fixed seat to drive the rotating bracket to rotate relative to the fixed seat. The variable aperture requires an electrical connection structure for the electronic device to supply power to the driver chip on the rotating bracket and send a drive signal. The electrical connection structure is relatively complex and difficult to assemble. In addition, during the rotation of the rotating bracket relative to the fixed seat, the rotating bracket encounters a large resistance. The coil requires a large current to drive the rotating bracket to rotate, and the power consumption of the variable aperture is relatively high.

[0004] Summary of the Invention

[0005] The present application provides a variable aperture, a camera module, and an electronic device with a relatively simple electrical connection structure and low power consumption.

[0006] In the first aspect, an embodiment of the present application provides a variable aperture. It includes a fixed seat, a rotating bracket, a coil, a magnetic member, a driving chip, a first electrical connector, a second electrical connector, and a plurality of blades. The rotating bracket is rotatably connected to the fixed seat, a portion of the blade is connected to the fixed seat, a portion of the blade is connected to the rotating bracket, and the plurality of blades together surround an aperture. The coil is arranged on the rotating bracket, the magnetic member is arranged on the fixed seat, the coil is arranged facing the magnetic member, and the coil is used to drive the rotating bracket to rotate relative to the fixed seat, so that the aperture of the aperture changes. The driving chip and the first electrical connector are both arranged on the fixed seat, the second electrical connector is arranged on the rotating bracket, the first electrical connector is electrically connected to the second electrical connector, and the coil is electrically connected to the power supply interface of the driving chip through the second electrical connector and the first electrical connector.

[0007] It is understandable that, compared with the solution using a moving magnetic drive, that is, the coil is arranged on the fixed base, the magnetic part is arranged on the rotating bracket, and the rotating bracket is driven by the magnetic part to rotate, the present application adopts a moving coil drive method, that is, the magnetic part is arranged on the fixed base, the coil is arranged on the rotating bracket, and the rotating bracket is driven by the coil to rotate. This can prevent the magnetic part from being affected by magnets in other components near the variable aperture, such as magnets in the motor, which may affect the aperture adjustment of the variable aperture.

[0008] It is understood that, compared to solutions that fix the driver chip to a rotating bracket, the variable aperture iris of the present application utilizes a dynamic coil drive method while fixing the driver chip to a fixed base. The coil is electrically connected to the driver chip's power supply interface via a second electrical connector and a first electrical connector. This eliminates the need for wiring connecting the driver chip's data interface from the rotating bracket to the fixed base, simplifying the wiring structure within the electrical connection assembly. The rotating bracket offers less resistance during rotation, which helps reduce the power consumption of the variable aperture iris.

[0009] In a possible implementation, the variable aperture includes a first elastic piece, and the output end of the second electrical connector is electrically connected to the input end of the first electrical connector through the first elastic piece.

[0010] It is understandable that, compared with the solution of electrically connecting the first electrical connector and the second electrical connector through a flexible circuit board, the assembly between the spring and the fixing seat and the rotating bracket is simpler, the assembly difficulty is reduced, and the electrical connection reliability of the variable aperture is better.

[0011] In a possible implementation, the variable aperture further includes a second elastic piece. The input end of the second electrical connector can be electrically connected to the output end of the first electrical connector via the second elastic piece.

[0012] In a possible implementation, a portion of the first elastic piece is fixed to the fixing seat, and another portion of the first elastic piece is fixed to the rotating bracket.

[0013] It will be appreciated that the iris diaphragm 100 may include an initial state, an intermediate state, and an end state. The intermediate state is any state between the initial state and the end state. When the iris diaphragm is in the initial state, the aperture of the iris diaphragm is at its smallest, and the amount of light entering the lens assembly is minimal. When the iris diaphragm is in the end state, the aperture of the iris diaphragm is at its largest.

[0014] When the rotating bracket returns to the initial state from the intermediate state after rotation, the first elastic piece can provide elastic force while recovering its deformation, thereby helping the rotating bracket to reset and accelerating the recovery speed of the rotating bracket.

[0015] In one possible implementation, the first elastic piece includes a first end, a deformation section, and a second end, the deformation section is connected between the first end and the second end, the first end is fixed to the fixing seat, and the second end is fixed to the rotating bracket.

[0016] The deformation segment is a continuous "S" shape.

[0017] It is understandable that the "S"-shaped first spring piece can increase the length and arc as much as possible in a limited space, reduce the spring coefficient k value, and enhance the reliability of the first spring piece.

[0018] In one possible implementation, a first fixing hole is provided at the first end, a second fixing hole is provided at the second end, a first connecting post is provided at the fixing base, and a second connecting post is provided at the rotating bracket. The first fixing hole is sleeved onto the first connecting post, and the second fixing hole is sleeved onto the second connecting post. This improves the reliability of the connection between the first spring piece, the rotating bracket, and the fixing base, reducing the risk of disconnection between the first and second electrical connectors during rotation of the rotating bracket.

[0019] In a possible implementation, the stiffness coefficient of the first elastic sheet is less than or equal to 1.6 mN / mm.

[0020] It's understandable that the greater the spring constant of the spring, the greater the resistance generated by the spring deformation that the rotating bracket must overcome during rotation, and the greater the force required between the coil and the magnetic element. In other words, when the rotating bracket rotates at the same angle, the greater the spring constant, the greater the current required to be output to the coil, and the higher the power consumption of the variable aperture. Therefore, setting the spring constant k to a value less than or equal to 1.6 millinewtons per millimeter (mN / mm) helps reduce the force generated by the spring deformation during rotation of the rotating bracket, thereby reducing the energy consumption of the variable aperture.

[0021] In one possible implementation, the second electrical connector is electrically connected to the first electrical connector through a flexible circuit board.

[0022] It's understandable that, compared to a solution where the driver chip is fixed to the rotating bracket and then electrically connected to the external circuitry of the variable aperture via a flexible printed circuit board, fixing the driver chip to the mounting base reduces the number of traces in the flexible printed circuit board and the complexity of the circuit connectivity within the flexible printed circuit board. This reduced number of traces in the flexible printed circuit board makes the flexible printed circuit board more flexible, and reduces the resistance encountered by the rotating bracket during rotation. For the same rotation angle of the rotating bracket, the coil requires less operating current, and the variable aperture consumes less power.

[0023] In one possible implementation, the fixing base includes a bottom wall, side walls, and a protrusion. The side walls and protrusion are spaced apart and disposed on the bottom wall. The bottom wall, side walls, and protrusion are annular in shape, with the side walls surrounding the protrusion. The bottom wall, side walls, and protrusion define a rotation channel within which the rotating bracket rotates. The flexible printed circuit board is partially located within the rotation channel and surrounds at least a portion of the protrusion.

[0024] As can be understood, the flexible circuit board can minimize the reaction force of the variable aperture iris rotating bracket during rotation, further reducing power consumption. Furthermore, the flexible circuit board has a certain degree of flexibility and is relatively impact-resistant, and the electrical connection between the first and second electrical connectors is relatively reliable.

[0025] In a possible implementation, the first electrical connector is a metal terminal, and the first electrical connector is embedded in the fixing seat.

[0026] It is understood that embedding the first electrical connector within the mounting base can reduce the number of components required to assemble the iris diaphragm, simplifying assembly steps and lowering the difficulty of assembly. Furthermore, the mounting base protects the first electrical connector, reducing the risk of damage to the first electrical connector, and improving the reliability of the electrical connection structure of the iris diaphragm.

[0027] In one possible implementation, the first electrical connector is a flexible printed circuit board and includes a main body, a first connecting end, and a second connecting end. The first connecting end and the second connecting end are spaced apart and electrically connected to the main body. The main body is connected to a side of the fixed base away from the rotating bracket. A driver chip is connected to the main body. The coil is electrically connected to a power supply interface of the driver chip via the second electrical connector, the first connecting end, and the main body. The driver chip is electrically connected to the external circuit of the variable aperture through the main body and the second connecting end.

[0028] It can be understood that the flexible circuit board is flexible and has good impact resistance, and the electrical connection between the first electrical connector and the second electrical connector has good reliability.

[0029] In a possible implementation, the first connection end and the main body are arranged along a thickness direction of the variable aperture, and the first connection end is located on a side of the main body close to the rotating bracket.

[0030] It can be understood that the first connection end is located on the side of the main body close to the rotating bracket. When the coil is electrically connected to the first connection end of the first electrical connector through the second electrical connector, the distance between the first connection end and the rotating bracket is closer, which is conducive to achieving electrical connection between the first connection end and the second electrical connector.

[0031] In a possible implementation, the coil is disposed facing the magnetic member, and the coil and the magnetic member are arranged along the thickness direction of the variable aperture.

[0032] It is understandable that the arrangement of the coil and the magnetic member along the thickness direction of the variable aperture can reduce the thickness of the variable aperture, which is beneficial to reducing the volume of the variable aperture.

[0033] In one possible implementation, the magnetic element includes a south pole and a north pole, and the south pole direction and the north pole direction are arranged at an angle.

[0034] It is understood that the magnetic element's south and north poles are arranged at an angle, so the direction of the Ampere force acting on the coil can be tangential to the axis of the rotating bracket and parallel to the plane of the rotating bracket. Most of the Ampere force can be used to drive the rotating bracket. This results in a high utilization rate of the Ampere force acting on the coil. This can reduce unnecessary energy loss during the rotation of the variable aperture, thereby lowering the power consumption of the variable aperture.

[0035] In a possible implementation, the variable aperture further includes a magnetic conductive member, which is located on a side of the magnetic member away from the coil.

[0036] It's understandable that the magnetic conductive piece can enhance the magnetic field of the magnetic component at the coil, reducing magnetic field leakage from the magnetic component and reducing magnetic interference between the motor's magnet and the variable aperture iris' magnetic component. Consequently, for coils with the same current, the coil with the magnetic conductive piece generates greater driving force. In other words, when the rotating bracket rotates the same angle, the coil with the magnetic conductive piece requires less operating current, resulting in lower power consumption for the variable aperture iris.

[0037] In one possible implementation, the magnetic member includes a bottom surface and an outer side surface, wherein the bottom surface is a side surface of the magnetic member away from the coil, and the outer side surface is a side surface of the magnetic member away from the center of the fixing base. The magnetic conductive member connects the outer side surface and the bottom surface of the magnetic member.

[0038] It is understood that the magnetic conductive member connects the outer side and bottom surface of the magnetic member and can be "L" shaped. This can reduce magnetic leakage from the outer side and bottom surface of the magnetic member and further enhance the magnetic field at the coil.

[0039] In one possible implementation, the coil includes a first sub-coil and a second sub-coil arranged at intervals, the magnetic member includes a first sub-magnetic member and a second sub-magnetic member arranged at intervals, the first sub-coil is arranged facing the first sub-magnetic member, and the second sub-coil is arranged facing the second sub-magnetic member.

[0040] The first sub-coil and the second sub-coil are used to jointly drive the rotating bracket to rotate relative to the fixed base. The first sub-coil and the second sub-coil are symmetrical about the rotation center of the rotating bracket.

[0041] It is understandable that when the first sub-coil and the second sub-coil jointly drive the rotating bracket to rotate, the forces exerted by the first sub-coil and the second sub-coil on each position of the rotating bracket are relatively balanced, and the rotating bracket is not likely to tilt due to uneven forces.

[0042] In one possible implementation, the variable aperture further includes a Hall magnetic element, which is connected to the rotating bracket and disposed facing the driving chip. The driving chip is also used to detect the magnetic field strength of the Hall magnetic element at different positions.

[0043] It is understandable that, on the one hand, the driver chip can determine the position of the Hall effect magnetic element based on the current magnetic field strength of the Hall effect magnetic element, confirm the angle of rotation of the rotating bracket relative to the fixed base, and then accurately determine the aperture size of the aperture of the variable aperture, and thus accurately determine the luminous flux entering the lens assembly at the current position. On the other hand, when the current magnetic field strength of the Hall effect magnetic element differs from the target magnetic field strength, the driver chip can adjust the output operating current based on the difference between the current magnetic field strength of the Hall effect magnetic element and the target magnetic field strength, so that the angle of rotation of the coil-driven rotating bracket reaches the target angle, achieving the required target aperture size, and realizing closed-loop control.

[0044] In one possible implementation, the variable aperture further includes a magnetic plate connected to a rotating bracket. The magnetic plate, in conjunction with the magnetic component, drives the rotating bracket to rotate relative to the fixed base, thereby reducing the aperture diameter. Along the thickness of the variable aperture, the projection of the magnetic plate's magnetic field center on the fixed base is offset from the projection of the magnetic component's magnetic field center on the fixed base.

[0045] It is understandable that the magnetic sheet can help the rotating bracket to quickly return to the initial position after the rotating bracket rotates relative to the fixing base.

[0046] In a second aspect, embodiments of the present application provide a camera module, which includes a lens assembly and a variable aperture, wherein the variable aperture is fixedly connected to the lens assembly and located on the light incident side of the lens assembly.

[0047] It can be understood that when the variable aperture is applied to the camera module, the power consumption of the variable aperture is low and the power consumption of the camera module is also low.

[0048] In a third aspect, an embodiment of the present application provides an electronic device, which includes a housing and a camera module, wherein the camera module is disposed in the housing.

[0049] It is understandable that when the camera module is applied to electronic devices, the power consumption of the electronic devices is also lower, the standby time of the electronic devices is longer, and the user experience is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be described below.

[0051] FIG1 is a schematic structural diagram of an electronic device according to an embodiment of the present application;

[0052] FIG2 is a partial cross-sectional view of the electronic device shown in FIG1 taken along line AA in one embodiment;

[0053] FIG3 is a schematic diagram of a portion of the structure of the camera module of the electronic device shown in FIG2 ;

[0054] FIG4 is an exploded schematic diagram of an embodiment of the camera module shown in FIG3 ;

[0055] FIG5 is a partially exploded schematic diagram of an embodiment of the variable aperture shown in FIG4 ;

[0056] FIG6 is a schematic structural diagram of an embodiment of the fixing base shown in FIG5 ;

[0057] FIG7 is a schematic structural diagram of an embodiment of the magnetic member and the magnetic conductive member shown in FIG5 ;

[0058] FIG8 is a schematic diagram of an assembly of the magnetic member and the magnetic conductive member shown in FIG7 according to an embodiment;

[0059] FIG9 is a schematic diagram of an assembly of the magnetic member, the magnetic conductive member, and the fixing seat shown in FIG5 ;

[0060] FIG10 is a schematic structural diagram of an embodiment of the first electrical connector shown in FIG5 ;

[0061] FIG11 is a schematic diagram of an assembly of the driver chip and the first electrical connector shown in FIG5 ;

[0062] FIG12 is a schematic structural diagram of an embodiment of the driver chip shown in FIG11 ;

[0063] FIG13 is a schematic diagram of an assembly of the driver chip, the first electrical connector, and the fixing base shown in FIG5 ;

[0064] FIG14 is a schematic structural diagram of the driver chip, the first electrical connector, and the fixing seat shown in FIG13 at another angle;

[0065] FIG15 is a schematic structural diagram of an embodiment of the rotating bracket shown in FIG5 ;

[0066] FIG16 is a schematic structural diagram of the rotating bracket shown in FIG15 at another angle;

[0067] FIG17 is a schematic diagram of an assembly of the rotating bracket and the magnetic sheet shown in FIG5 according to an embodiment;

[0068] FIG18 is a schematic diagram of an assembly of the coil and the second electrical connector shown in FIG5 ;

[0069] FIG19 is a schematic diagram of an assembly of the coil, the second electrical connector, and the rotating bracket shown in FIG5 ;

[0070] FIG20 is a partial structural diagram of an embodiment of the variable aperture shown in FIG4 ;

[0071] FIG21 is a schematic structural diagram of a portion of the variable aperture structure shown in FIG20 at another angle;

[0072] FIG22 is a schematic cross-sectional view of a partial structure of the variable aperture shown in FIG21 at position BB in one embodiment;

[0073] FIG23 is a schematic diagram of an assembly of the driver chip, electrical connection components, driver components, and filter shown in FIG21 according to an embodiment;

[0074] FIG24 is a schematic diagram of electrical connections between the driver chip, coil, electrical connection components, and a computing control unit of an electronic device shown in FIG23 ;

[0075] FIG25 is a schematic structural diagram of an embodiment of the first elastic piece shown in FIG23 ;

[0076] FIG26 is a schematic diagram of an assembly of the magnetic member and the magnetic attraction sheet shown in FIG5 according to an embodiment;

[0077] FIG27 is an enlarged schematic diagram of an embodiment of point C shown in FIG20 ;

[0078] FIG28 is a schematic diagram of a portion of the structure of the variable aperture shown in FIG21 at another angle;

[0079] FIG29 is an enlarged schematic diagram of an embodiment at D in FIG28;

[0080] FIG30 is a partial structural diagram of an embodiment of the variable aperture shown in FIG4 ;

[0081] FIG31 is a schematic structural diagram of an embodiment of the blade shown in FIG5 at different angles;

[0082] FIG32 is a partial structural diagram of an embodiment of the variable aperture shown in FIG4 ;

[0083] FIG33 is a partial structural diagram of an embodiment of the variable aperture shown in FIG4 ;

[0084] FIG34 is a schematic structural diagram of another embodiment of the variable aperture shown in FIG4 ;

[0085] FIG35 is a partially exploded schematic diagram of an embodiment of the variable aperture shown in FIG34 ;

[0086] FIG36 is a schematic diagram of an assembly of the first electrical connector and the fixing base shown in FIG35 according to an embodiment;

[0087] FIG37 is a cross-sectional schematic diagram of an embodiment of the fixing base shown in FIG36;

[0088] FIG38 is a schematic diagram of an assembly of the first electrical connector, the driver chip, and the filter shown in FIG35 ;

[0089] FIG39 is a schematic structural diagram of another embodiment of the variable aperture shown in FIG4 ;

[0090] FIG40 is a partially exploded schematic diagram of an embodiment of the variable aperture shown in FIG39 ;

[0091] FIG41 is a schematic diagram of an assembly of the third electrical connector and the fixing base shown in FIG40 according to an embodiment;

[0092] FIG42 is a schematic diagram of an assembly of the electrical connection components and coils, driver chips, and filters shown in FIG40 . DETAILED DESCRIPTION

[0093] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application.

[0094] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed connection" means that the two are connected to each other and the relative position relationship remains unchanged after the connection. "Rotational connection" means that the two are connected to each other and can rotate relative to each other after the connection. "Sliding connection" means that the two are connected to each other and can slide relative to each other after the connection. The directional terms mentioned in the embodiments of the present application, such as "up", "down", "left", "right", "inside", "outside", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. "Multiple" means at least two.

[0095] In the embodiments of this application, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first," "second," "third," or "fourth" may explicitly or implicitly include one or more of the features.

[0096] It is understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings.

[0097] Fig. 1 is a schematic structural diagram of an electronic device 1 provided in an embodiment of the present application. Fig. 2 is a partial cross-sectional view of the electronic device 1 shown in Fig. 1 taken along line AA in an embodiment.

[0098] As shown in FIG1 and FIG2 , the electronic device 1 may be a mobile phone, a tablet personal computer, a laptop computer, a personal digital assistant (PDA), a camera, a personal computer, a notebook computer, an in-vehicle device, a wearable device, augmented reality (AR) glasses, an AR helmet, virtual reality (VR) glasses, or a VR helmet, etc., having a camera module 1000. The electronic device 1 of the embodiment shown in FIG1 is described using a mobile phone as an example.

[0099] As shown in Figures 1 and 2, the electronic device 1 may include a camera module 1000, a housing 2000, a screen 3000, and a host circuit board 4000. It should be noted that Figures 1, 2, and the related figures below only schematically illustrate some components included in the electronic device 1, and the actual shape, actual size, actual position, and actual structure of these components are not limited by Figures 1, 2, and the figures below. In addition, since the host circuit board 4000 and the camera module 1000 are the internal structures of the electronic device 1, Figure 1 schematically shows the host circuit board 4000 and the camera module 1000 through dotted lines.

[0100] In some embodiments, when the electronic device 1 is a device of some other form, the electronic device 1 may not include the screen 3000 and the host circuit board 4000 .

[0101] For ease of description, the width direction of the electronic device 1 is defined as the X-axis. The length direction of the electronic device 1 is defined as the Y-axis. The thickness direction of the electronic device 1 is defined as the Z-axis. It is understood that the coordinate system setting of the electronic device 1 can be flexibly set according to specific actual needs.

[0102] For example, the housing 2000 may include a main frame 2100 and a back cover 2200. The back cover 2200 may be fixedly connected to one side of the main frame 2100. The screen 3000 may be fixed to a side of the main frame 2100 away from the back cover 2200. The screen 3000, the main frame 2100, and the back cover 2200 may collectively enclose the interior of the electronic device 1. The interior of the electronic device 1 may be used to house components of the electronic device 1, such as a battery, a receiver, or a microphone.

[0103] Screen 3000 can be used to display images, etc. Screen 3000 can be a flat screen or a curved screen. The display screen of screen 3000 can be an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode (AMOLED) display screen, or a liquid crystal display (LCD).

[0104] 1 and 2 again, the host circuit board 4000 may be fixed inside the electronic device 1. The host circuit board 4000 may be provided with chips such as a central processing unit (CPU), a graphics processing unit (GPU), or a universal flash storage (UFS).

[0105] In addition, the camera module 1000 can be arranged inside the electronic device 1. The camera module 1000 can be used to collect ambient light outside the electronic device 1. The camera module 1000 can be electrically connected to the host circuit board 4000. In this way, signals can be transmitted between the camera module 1000 and the host circuit board 4000. It can be understood that the camera module 1000 can be a rear camera module or a front camera module, etc. In addition, the camera module 1000 can be an upright camera module (for example, the optical axis direction of the camera module is the Z-axis direction) or a periscope camera module (for example, the optical axis direction of the camera module can be any direction on the XY plane).

[0106] In some embodiments, the camera module 1000 may be located inside the electronic device 1. The camera module 1000 may be fixed to the side of the screen 3000 facing the back cover 2200. For example, the back cover 2200 may be provided with a light-transmitting hole 2300. The shape of the light-transmitting hole 2300 is not limited to the circular shape shown in FIG1 . The light-transmitting hole 2300 may be used to connect the interior of the electronic device 1 to the exterior of the electronic device 1. Light outside the electronic device 1 may enter the interior of the electronic device 1 through the light-transmitting hole 2300 of the back cover 2200. The camera module 1000 may collect ambient light entering the interior of the electronic device 1.

[0107] FIG3 is a schematic diagram of a partial structure of the camera module 1000 of the electronic device 1 shown in FIG2 .

[0108] As shown in Figures 2 and 3, the camera module 1000 may include a variable aperture 100 and a lens assembly 200. The optical axis of the camera module 1000 may include the optical axis of the variable aperture 100 and the optical axis of the lens assembly 200. In some embodiments, the optical axis direction of the lens assembly 200 and the optical axis direction of the variable aperture 100 may both be the Z-axis direction.

[0109] The lens assembly 200 may be a fixed-focus lens, an auto-focus (AF) lens, a zoom lens, etc. The lens assembly 200 of the present application is described by taking an AF lens assembly as an example.

[0110] The lens assembly 200 may include a lens 300 and a motor (not shown). The lens 300 may be mounted on the motor. The motor may be used to drive the lens 300 to move along the optical axis (i.e., the Z-axis) of the camera module 1000. The motor may be a voice coil motor or a shape memory alloy (SMA) motor. The present application does not limit the specific structure of the motor.

[0111] FIG4 is a schematic diagram of an exploded view of an embodiment of the camera module 1000 shown in FIG3 .

[0112] 2, 3 and 4, the variable aperture 100 may be located on the light incident side of the lens 300 of the lens assembly 200 and fixedly connected to the lens assembly 200. The variable aperture 100 may have an aperture hole 101 of variable size.

[0113] The variable aperture 100 can be positioned opposite the light-transmitting hole 2300 on the rear cover 2200. The lens 300 can be positioned opposite the aperture 101 of the variable aperture 100. Thus, scene light can enter the lens 300 through the aperture 101. The variable aperture 100 can adjust the size of the aperture 101 to adjust the amount of light entering the lens 300.

[0114] For example, when the electronic device 1 is shooting in low light conditions, the variable aperture 100 can increase the aperture 101 to increase the light flux entering the lens assembly 200. When the electronic device 1 is shooting in bright light conditions, the variable aperture 100 can decrease the aperture 101 to reduce the light flux entering the lens assembly 200.

[0115] It will be appreciated that when the size of the aperture 101 of the variable aperture 100 and the position of the aperture 101 of the variable aperture 101 relative to the lens 300 change, the field of view of the lens 300 will also change. In some embodiments, the variable aperture 100 can be fixed to the lens 300 so that when the motor drives the lens 300 to move along the Z-axis, the variable aperture 100 can also move along the Z-axis. In other words, during the movement of the lens 300 along the Z-axis, the position of the variable aperture 100 relative to the lens 300 remains fixed. In this way, without considering other factors that affect the field of view of the lens 300, when the position of the aperture 101 of the variable aperture 100 relative to the lens 300 is fixed, the field of view of the lens 300 is also fixed.

[0116] In some embodiments, the central axis of the aperture 101 may be collinear with the optical axis of the lens 300. It is understood that the central axis of the aperture 101 of the variable aperture 100 may refer to a virtual axis passing through the center of the aperture 101 and along the thickness direction of the variable aperture 100.

[0117] In some embodiments, the thickness direction of the variable aperture 100 may be the Z-axis direction.

[0118] In some embodiments, the iris 100 may be fixedly connected to a motor. In this way, when the motor drives the lens 300 to move along the Z-axis, the iris 100 does not need to move along the Z-axis, and the lens 300 can move toward or away from the iris 100.

[0119] In some embodiments, when the lens assembly 200 is a fixed-focus lens, the motor can be omitted from the lens assembly 200. In this case, the iris 100 can be directly fixedly connected to the light incident side of the lens 300.

[0120] In some embodiments, the variable aperture 100 may include an initial state, an intermediate state, and an end state. The intermediate state is any state between the initial state and the end state. When the variable aperture 100 is in the initial state, the aperture 101 of the variable aperture 100 is at its smallest, and the amount of light entering the lens assembly 200 is minimal. When the variable aperture 100 is in the end state, the aperture 101 of the variable aperture 100 is at its largest, and the amount of light entering the lens assembly 200 is maximum. The following description uses the structure of the variable aperture 100 in the initial state as an example.

[0121] In some embodiments, the electronic device 1 may include a computing control unit 5000. For example, the computing control unit 5000 may be disposed on a host circuit board 4000 (as shown in FIG1 ). The computing control unit 5000 may also be disposed on other circuit boards within the electronic device 1, such as a circuit board where a universal serial bus (USB) device is located.

[0122] In some embodiments, the computing control unit 5000 may be an application processor (AP). The computing control unit 5000 may be electrically connected to the camera module 1000. The computing control unit 5000 may be configured to receive and process electrical signals containing image information from the camera module 1000. The computing control unit 5000 may also be configured to control the movement of the variable aperture 100 or motor of the camera module 1000 to adjust the amount of light entering the camera module 1000 or to perform automatic focus (AF) movement, etc.

[0123] FIG. 5 is a partially exploded schematic diagram of an embodiment of the variable aperture 100 shown in FIG. 4 .

[0124] As shown in FIG. 5 , the variable aperture 100 may include a fixing base 10 , a rotating bracket 20 , a driving assembly 30 , a driving chip 40 , an electrical connection assembly 50 , a blade assembly 60 , a Hall magnetic element 70 and a magnetic sheet 80 .

[0125] For example, the driving assembly 30 may include a magnetic member 31, a coil 32, and a magnetic conductive member 33. The electrical connection assembly 50 may include a first electrical connection member 51, a second electrical connection member 52, and a third electrical connection member 53. The blade assembly 60 may include a gasket 61, a plurality of blades 62, and an upper cover 63.

[0126] FIG6 is a schematic structural diagram of an embodiment of the fixing base 10 shown in FIG5 .

[0127] As shown in Figure 6, the fixing base 10 may include a bottom wall 11, a side wall 12, and a protrusion 13. The side wall 12 and the protrusion 13 may be fixedly connected to the same side of the bottom wall 11. The protrusion 13 may be spaced apart from the side wall 12.

[0128] The fixing base 10 may have an accommodating space 14. Exemplarily, the protrusion 13 may enclose the accommodating space 14. The accommodating space 14 may be used to accommodate part of the lens 300. It is understandable that when the lens 300 and the variable aperture 100 move relative to each other in the Z-axis direction, the accommodating space 14 may be used to provide space for accommodating the lens 300, that is, the lens 300 and the variable aperture 100 may partially overlap in the Z-axis direction. In this way, the length of the camera module 1000 in the Z-axis direction will not be increased, and the zoom of the lens 300 can be achieved at the same time, which is conducive to improving the utilization rate of the internal space of the electronic device 1.

[0129] In some embodiments, the fixing base 10 may be provided with a light-transmitting hole 15 . The light-transmitting hole 15 of the fixing base 10 may be used to allow external light to pass through. For example, the light-transmitting hole 15 of the fixing base 10 may be located on the protrusion 13 .

[0130] In some embodiments, the sidewall 12, protrusion 13, and bottom wall 11 of the fixing base 10 may also be annular. The sidewall 12 of the fixing base 10 may be disposed around the light-transmitting hole 15 of the fixing base 10. For example, the sidewall 12 of the fixing base 10 may be disposed around the protrusion 13 of the bottom wall 11. The sidewall 12, protrusion 13, and bottom wall 11 of the fixing base 10 may enclose a rotation channel 16.

[0131] As shown in Figures 5 and 6, the bottom wall 11 of the fixing base 10 may be provided with a first groove 111 and a second groove 112 spaced apart. The openings of the first groove 111 and the second groove 112 may face the rotating bracket 20. The first groove 111 and the second groove 112 may be symmetrical about the center of the fixing base 10.

[0132] In some embodiments, the side wall 12 may include a plurality of supporting columns 121. The plurality of supporting columns 121 may be disposed around the light-transmitting hole 15 of the fixing base 10 at intervals.

[0133] For example, the supporting column 121 may include a first portion 1211 and a second portion 1212, wherein the second portion is connected to a side of the first portion that is adjacent to the rotation channel 16. Along the Z-axis, the height of the second portion 1212 is lower than that of the first portion 1211. Thus, the side of the supporting column 121 that is adjacent to the rotation channel 16 may form a stepped surface.

[0134] In some embodiments, there may be four supporting columns 121 , two of which may form a group, and the two supporting columns 121 in the same group may be symmetrical about the center of the fixing base 10 .

[0135] In some embodiments, the first groove 111 may be located between the first supporting pillar 1211 and the second supporting pillar 1212 . The second groove 112 may be located between the third supporting pillar 1213 and the fourth supporting pillar 1214 .

[0136] In some embodiments, the fixing base 10 may further include a plurality of rotating columns 17. For example, the rotating columns 17 may be connected to the surface of the protrusion 13 away from the bottom wall 11. The plurality of rotating columns 17 may be distributed in a ring shape.

[0137] In some embodiments, the number of the rotating posts 17 may be six, and the six rotating posts 17 are evenly spaced and connected to the surface of the protrusion 13 away from the bottom wall 11 . The six rotating posts 17 are disposed around the light-transmitting hole 15 of the fixing base 10 .

[0138] In some embodiments, the fixing base 10 may further include a plurality of fixing posts 19. The fixing posts 19 may be connected to a surface of the side wall 12 away from the bottom wall 11. The plurality of fixing posts 19 may be arranged around the light-transmitting hole 15 of the fixing base 10.

[0139] In some embodiments, the bottom wall 11, side walls 12, and protrusion 13 of the fixing base 10 can be an integral structural member. The term "integrated structural member" refers to the process in which one of the two components is formed and connected to the other, without requiring further processing (such as bonding, welding, snap-fit ​​connection, or screw connection) to connect the two components. It is understood that the bottom wall 11, side walls 12, and protrusion 13 of the fixing base 10 can be an integral structural member, which improves the overall strength of the fixing base 10.

[0140] In other embodiments, the bottom wall 11 , the side wall 12 and the protrusion 13 of the fixing seat 10 may also be fixedly connected by bonding, welding, snap connection, screw connection, etc.

[0141] In some embodiments, the fixing base 10 may not include the protrusion 13, and the light-transmitting hole 15 of the fixing base 10 may be located on the bottom wall 11. The side wall 12 may be disposed around the light-transmitting hole 15. The rotating column 17 may be connected to the surface of the side wall 12 away from the bottom wall 11.

[0142] Figure 7 is a schematic structural diagram of one embodiment of the magnetic member 31 and the magnetic conductive member 33 shown in Figure 5. Figure 8 is a schematic assembly diagram of one embodiment of the magnetic member 31 and the magnetic conductive member 33 shown in Figure 7. Figure 9 is a schematic assembly diagram of one embodiment of the magnetic member 31, the magnetic conductive member 33, and the fixing base 10 shown in Figure 5.

[0143] As shown in Figures 7, 8 and 9, the magnetic member 31 may be provided on the fixing base 10. For example, the magnetic member 31 may be fixedly connected to the fixing base 10 by means of adhesive or the like.

[0144] In some embodiments, the magnetic member 31 may include a top surface 311, a bottom surface 312, an outer side surface 313, and an inner side surface 314. The top surface 311 and the bottom surface 312 may be disposed opposite to each other, and the outer side surface 313 and the inner side surface 314 may be disposed opposite to each other. The outer side surface 313 and the inner side surface 314 are connected between the top surface 311 and the bottom surface 312. The outer side surface 313 of the magnetic member 31 may be the surface of the magnetic member 31 on the side away from the light-transmitting hole 15 of the fixing base 10. The inner side surface 314 of the magnetic member 31 may be the surface of the magnetic member 31 on the side close to the light-transmitting hole 15. The top surface of the magnetic member 31 may be the surface of the magnetic member 31 on the side away from the bottom wall 11 of the fixing base 10. The bottom surface of the magnetic member 31 may be the surface of the magnetic member 31 on the side close to the bottom wall 11 of the fixing base 10.

[0145] The magnetic conductive member 33 may be connected to the bottom surface 312 of the magnetic member 31 . The magnetic conductive member 33 may be used to reduce magnetic field leakage from the bottom surface 312 of the magnetic member 31 and enhance the magnetic field strength of the magnetic member 31 .

[0146] As shown in FIG8 , the cross-section of the magnetic member 33 may be L-shaped. The magnetic member 33 may be connected to the bottom surface 312 and the outer side surface 313 of the magnetic member 31. In other embodiments, the cross-section of the magnetic member 33 may be U-shaped. The magnetic member 33 may also be connected to the bottom surface 312, the outer side surface 313, and the inner side surface 314 of the magnetic member 31.

[0147] It is understandable that the provision of the magnetic conductive member 33 can reduce the magnetic field leakage of the magnetic member 31 and reduce the magnetic interference of the magnet in the motor on the magnetic member 31 of the variable aperture 100 .

[0148] The magnetic member 31 may include a plurality of sub-magnetic members. The number of the magnetic conductive members 33 may be equal to the number of the sub-magnetic members included in the magnetic member 31. Exemplarily, the number of the sub-magnetic members included in the magnetic member 31 may be two, namely the first sub-magnetic member 315 and the second sub-magnetic member 316. The number of the magnetic conductive members 33 is also two, namely the first magnetic conductive member 331 and the second magnetic conductive member 332. The first magnetic conductive member 331 may be connected to the first sub-magnetic member 315. The second magnetic conductive member 332 may be connected to the second sub-magnetic member 316. The first magnetic conductive member 331 and the first sub-magnetic member 315 may be arranged in the first groove 111 of the fixing seat 10, and the second magnetic conductive member 332 and the second sub-magnetic member 316 may be arranged in the second groove 112 of the fixing seat 10.

[0149] In some embodiments, the first sub-magnetic member 315 and the second sub-magnetic member 316 can be symmetrical about the center of the fixing base 10. When the first sub-magnetic member 315 and the second sub-magnetic member 316 are connected to the fixing base 10, the structure formed by the first sub-magnetic member 315, the second sub-magnetic member 316, and the fixing base 10 is relatively symmetrical. In this case, when the first sub-magnetic member 315, the second sub-magnetic member 316, the fixing base 10 and other components interact with each other, the first sub-magnetic member 315, the second sub-magnetic member 316, and the fixing base 10 are not likely to tilt due to unstable center of gravity.

[0150] In other embodiments, the number of the magnetic component 31 and the magnetic conductive component 33 may also be one, or three or more.

[0151] For example, the magnetic member 31 may include a south pole 317 and a north pole 318. The direction of the south pole 317 and the direction of the north pole 318 may be arranged at an angle. The shape of the magnetic member 31 may be a broken line.

[0152] In other embodiments, the shape of the magnetic member 31 may be arc-shaped or linear. It is understood that the shape of the magnetic member 31 may be adaptively adjusted according to actual conditions.

[0153] In some embodiments, the variable aperture 100 may not be provided with the magnetic conductive member 33 .

[0154] FIG. 10 is a schematic structural diagram of an embodiment of the first electrical connector 51 shown in FIG. 5 .

[0155] 10 , the first electrical connector 51 may include a body 511 , a first connection end 512 , and a second connection end 513 . The first connection end 512 and the second connection end 513 may be spaced apart and electrically connected to the body 511 .

[0156] In some embodiments, the number of first connection ends 512 may be two, and the number of second connection ends 513 may be four. The first connection end 512 may be used to connect to the third electrical connector 53 of the electrical connection assembly 50. The second connection end 513 may be used to electrically connect to an external circuit of the variable aperture 100, allowing the first electrical connector 51 of the electrical connection assembly 50 to be electrically connected to the external circuit.

[0157] In some embodiments, the first electrical connector 51 may be a flexible circuit board.

[0158] In some embodiments, the first connection end 512 may also be used to connect to the second electrical connector 52 of the electrical connection assembly 50 .

[0159] FIG. 11 is a schematic diagram of an assembly of the driver chip 40 and the first electrical connector 51 shown in FIG. 5 , according to an embodiment of the present invention.

[0160] As shown in Figure 11, the driver chip 40 can be fixedly connected to the first electrical connector 51. The driver chip 40 can be electrically connected to the first electrical connector 51. The first electrical connector 51 can be used to achieve electrical connection between the driver chip 40 and other structures.

[0161] Exemplarily, the driving chip 40 may be connected to the main body 511 of the first electrical connection member 51 .

[0162] In some embodiments, the variable aperture 100 may further include a filter 90. The filter 90 may be disposed on the first electrical connector 51, spaced apart from the driver chip 40. The filter 90 may be spaced apart from the driver chip 40. The filter 90 may be electrically connected to the first electrical connector 51. For example, the filter 90 may be connected to the body 511 of the first electrical connector 51.

[0163] It is understood that the filter 90 can be electrically connected to the driver chip 40 via the first electrical connector 51. The filter 90 can be used to filter the current transmitted to the driver chip 40, thereby preventing the driver chip 40 from being interfered with by radio frequency signals. The radio frequency signal can come from other electronic devices other than the driver chip 40 within the electronic device 1, or it can come from outside the electronic device 1.

[0164] In some embodiments, the filter 90 may be a capacitor.

[0165] In some embodiments, the driver chip 40 and the filter 90 may be fixedly connected to the first electrical connector 51 by welding or other methods.

[0166] FIG. 12 is a schematic structural diagram of an embodiment of the driver chip 40 shown in FIG. 11 .

[0167] As shown in Figure 12, driver chip 40 may include a substrate 41, electronic components 42, and pins 43. Electronic components 42 may be connected to substrate 41, which may serve as a carrier for electronic components 42. One end of pin 43 is electrically connected to electronic components 42 on substrate 41, and the other end is used to electrically connect to other structures. Electronic components 42 may be active components or passive components such as capacitors, inductors, and resistors.

[0168] For example, the driver chip 40 may include six pins 43. The six pins 43 may include two power interfaces 431, two data interfaces 432, and two power supply interfaces 433. The power interfaces 431 and the data interfaces 432 may be electrically connected to the motor of the camera module 1000. The two power supply interfaces 433 may be used to output operating current to the coil 32.

[0169] As shown in Figures 11 and 12, the driver chip 40 can be fixedly connected to the main body 511 of the first electrical connector 51. The two first connection ends 512 can be electrically connected to the two power supply interfaces 433 of the driver chip 40 through the main body 511. The second connection ends 513 can be electrically connected to the two power interfaces 431 and the two data interfaces 432 of the driver chip 40 through the main body 511.

[0170] In some embodiments, the second connection end 513 of the first electrical connector 51 can be electrically connected to the motor. The driver chip 40 can be electrically connected to the main board of the camera module 1000 through the circuit in the motor.

[0171] It is understandable that the two power interfaces 431 and the two data interfaces 432 can be electrically connected to one end of the second connection end 513 of the first electrical connector 51. The other end of the second connection end 513 can be electrically connected to the motor. The driver chip 40 can be electrically connected to the mainboard of the camera module 1000 through the circuit inside the motor. The mainboard of the camera module 1000 can be electrically connected to the host circuit board 4000 through the external circuit of the camera module 1000. In this way, the driver chip 40 can be electrically connected to the computing control unit 5000 of the electronic device 1. The electronic device 1 can supply power to the driver chip 40 through the two power interfaces 431. The driver chip 40 can obtain the aperture adjustment instruction issued by the computing control unit 5000 through the data interface 432. The driver chip 40 can also feedback the working status of the variable aperture 100 to the computing control unit 5000 through the data interface 432.

[0172] Figure 13 is a schematic diagram of an assembly of the driver chip 40, the first electrical connector 51 and the fixing base 10 shown in Figure 5. Figure 14 is a schematic diagram of the driver chip 40, the first electrical connector 51 and the fixing base 10 shown in Figure 13 from another angle.

[0173] As shown in Figures 13 and 14 , the first electrical connector 51 may be fixedly connected to the fixing base 10. The driver chip 40 and the filter 90 may be disposed on the fixing base 10 via the first electrical connector 51.

[0174] As shown in Figures 2 and 14, the main body 511 of the first electrical connector 51 can be connected to a side of the fixed base 10 away from the rotating bracket 20. The first connecting end 512 and the main body 511 are arranged along the thickness direction of the variable aperture 100 (i.e., the Z-axis direction). The first connecting end 512 can be located on a side of the main body 511 close to the rotating bracket 20. For example, the first connecting end 512 of the first electrical connector 51 can be fixed to the sidewall 12 of the fixed base 10.

[0175] In some embodiments, the mounting base 10 may be provided with a first through hole 18. For example, the first through hole 18 may be located on the bottom wall 11 of the mounting base 10. The first through hole 18 may connect the top and bottom surfaces of the bottom wall 11 of the mounting base 10. The driver chip 40 may be disposed within the first through hole 18, exposed relative to the mounting base 10.

[0176] In some embodiments, the filter 90 may also be disposed in the first through hole 18 and exposed relative to the fixing base 10 .

[0177] It is understood that the driver chip 40 and the filter 90 are located within the first through hole 18 and overlap with the fixing base 10 in the Z-axis direction. This effectively reduces the thickness of the variable aperture 100 in the Z-axis direction, while also providing some protection for the driver chip 40 and the filter 90, preventing them from interfering with other surrounding structures and causing damage. This ensures the operational stability of the variable aperture 100, and improves the reliability of the variable aperture 100.

[0178] Fig. 15 is a schematic structural diagram of an embodiment of the rotating bracket 20 shown in Fig. 5. Fig. 16 is a schematic structural diagram of the rotating bracket 20 shown in Fig. 15 at another angle.

[0179] As shown in Figures 15 and 16, the rotating bracket 20 may include a main body 21, an extension portion 22, a support portion 23 and a protrusion 24. The main body 21 may include a top surface 211, a bottom surface 212 and a peripheral side surface 213. Among them, the top surface 211 of the main body 21 is a side surface of the main body 21 away from the fixed seat 10. The top surface 211 and the bottom surface 212 are arranged opposite to each other. The peripheral side surface 213 is connected between the top surface 211 and the bottom surface 212. The extension portion 22, the support portion 23 and the protrusion 24 can be connected to the peripheral side surface 213 of the main body 21. It can be understood that the bottom surface 212 of the main body 21 can be a part of the bottom surface of the rotating bracket 20.

[0180] The rotating bracket 20 may be provided with a light-transmitting hole 25. The light-transmitting hole 25 of the rotating bracket 20 can allow external light to pass through. For example, the light-transmitting hole 25 of the rotating bracket 20 may be located on the main body 21 of the rotating bracket 20. In some embodiments, the main body 21 may be annular, with the inner side of the annular shape enclosing the light-transmitting hole 25.

[0181] In some embodiments, the rotating bracket 20 may further include a plurality of guide posts 26. The guide posts 26 may be located on the top surface of the rotating bracket 20. The plurality of guide posts 26 may be disposed around the light-transmitting hole 25 of the rotating bracket 20.

[0182] The number of extension portions 22 of the rotating bracket 20 can be one or more. For example, the number of extension portions 22 of the rotating bracket 20 can be two, namely a first extension portion 221 and a second extension portion 222. The first extension portion 221 and the second extension portion 222 can be symmetrical about the center of the main body portion 21 of the rotating bracket 20.

[0183] In some embodiments, the protrusion 24 of the rotating bracket 20 may be provided with a receiving groove 241 . The opening of the receiving groove 241 may be located at the bottom surface of the rotating bracket 20 .

[0184] In some embodiments, there may be multiple support portions 23. For example, there may be four support portions 23, which are spaced apart and arranged around the light-transmitting hole 25 of the rotating bracket 20. The first extension portion 221 and the second extension portion 222 of the rotating bracket 20 may be located between two support portions 23, respectively.

[0185] In some embodiments, the rotating bracket 20 may be provided with a retaining groove 27. The retaining groove 27 may open on the bottom surface of the rotating bracket 20. For example, there may be two retaining grooves 27, namely a first retaining groove 271 and a second retaining groove 272. The first retaining groove 271 may be located on the first extension portion 221 of the rotating bracket 20. The second retaining groove 272 may be located on the second extension portion 222 of the rotating bracket 20. The openings of the first retaining groove 271 and the second retaining groove 272 may face the bottom surface of the rotating bracket 20.

[0186] In some embodiments, the rotating bracket 20 may further include a limiting structure 28. The limiting structure 28 is connected to the bottom surface 212 of the main body 21 of the rotating bracket 20. The limiting structure 28 may be disposed opposite the limiting slot 27 and may be located on a side of the limiting slot 27 that is closer to the light-transmitting hole 25 of the rotating bracket 20.

[0187] In other embodiments, the rotating bracket 20 may not be provided with the extending portion 22 .

[0188] FIG. 17 is a schematic diagram of an assembly of the rotating bracket 20 and the magnetic sheet 80 shown in FIG. 5 .

[0189] As shown in Figures 16 and 17, the magnetic sheet 80 can be connected to the rotating bracket 20. For example, the wall surface of the limiting groove 27 can also be provided with a mounting groove 29. The opening of the mounting groove 29 can face the bottom surface of the rotating bracket 20. The mounting groove 29 can be used to accommodate the magnetic sheet 80.

[0190] For example, the number of the magnetic sheets 80 can be two, and the number of the mounting slots 29 can be equal to or equal to the number of the magnetic sheets 80. The two magnetic sheets 80 are mounted in the two mounting slots 29 in a one-to-one correspondence.

[0191] In some embodiments, when there are two magnetic sheets 80 and two mounting slots 29, the line connecting the two mounting slots 29 can pass through the rotation center of the rotating bracket 20. The rotation center of the rotating bracket 20 refers to the intersection of the rotation axis in the XY plane when the rotating bracket 20 rotates in the XY plane.

[0192] For example, one mounting slot 29 may be located on the main body portion 511 of the rotating bracket 20 , and the other mounting slot 29 may be located on the extending portion 22 of the rotating bracket 20 .

[0193] In other embodiments, when there are two mounting slots 29 , the line connecting the two mounting slots 29 may also be staggered from the rotation center of the rotating bracket 20 .

[0194] In other embodiments, the number of the magnetic sheets 80 may be one, or three or more. The number of the mounting slots 29 may be equal to the number of the magnetic sheets 80 .

[0195] FIG. 18 is a schematic assembly diagram of the coil 32 and the second electrical connector 52 shown in FIG. 5 , according to an embodiment of the present invention.

[0196] As shown in FIG18 , the coil 32 can be fixedly connected to the second electrical connector 52 and electrically connected to the second electrical connector 52. For example, the second electrical connector 52 can include a main body 521 and an extension 522. The extension 522 can be connected to the main body 521. The coil 32 can be fixedly connected to the extension 522 of the second electrical connector 52.

[0197] In some embodiments, the coil 32 may be fixedly connected to the extension portion 522 of the second electrical connector 52 by welding or other methods.

[0198] The coil 32 may include multiple sub-coils. Correspondingly, the second electrical connector 52 may also include multiple extensions 522. For example, the coil 32 may include two sub-coils, namely a first sub-coil 321 and a second sub-coil 322. The second electrical connector 52 may also include two extensions 522, namely a first extension 5221 and a second extension 5222. The first extension 5221 and the second extension 5222 of the second electrical connector 52 are respectively connected to the ends of the main body 521 of the second electrical connector 52.

[0199] In this way, the first extension portion 5221 and the second extension portion 5222 of the second electrical connector 52 can be symmetrical about the center of the main body 521 of the second electrical connector 52. The first sub-coil 321 can be fixedly connected to the first extension portion 5221 and electrically connected to the first extension portion 5221. The second sub-coil 322 can be fixedly connected to the second extension portion 5222 and electrically connected to the second extension portion 5222. It is understood that the first sub-coil 321 and the second sub-coil 322 can be electrically connected to each other by being electrically connected to the second electrical connector 52.

[0200] The second electrical connector 52 may be provided with a light-transmitting hole 523. The light-transmitting hole 523 of the second electrical connector 52 may be used to allow external light to pass through. For example, the light-transmitting hole 523 of the second electrical connector 52 may be located on the body portion 521 of the second electrical connector 52.

[0201] In some embodiments, the main body 521 of the second electrical connector 52 may also be ring-shaped.

[0202] In some embodiments, the body portion 521 of the second electrical connector 52 may be provided with a limiting hole 5211. The limiting hole 5211 may be located on a side of the body portion 521 close to the light-transmitting hole 15. The limiting hole 5211 may be connected to the light-transmitting hole 523 of the second electrical connector 52.

[0203] In other embodiments, the coil 32 may include one sub-coil, and in this case, the number of the extending portion 522 may also be one.

[0204] In other embodiments, the second electrical connector 52 may not be provided with the extension portion 522 . The coil 32 may be connected to the main body 521 .

[0205] FIG. 19 is a schematic assembly diagram of the coil 32 , the second electrical connector 52 , and the rotating bracket 20 shown in FIG. 5 , according to an embodiment of the present invention.

[0206] As shown in Figure 19, the second electrical connector 52 can be connected to the bottom surface of the rotating bracket 20. The coil 32 can be connected to a surface of the second electrical connector 52 that is away from the rotating bracket 20. It is understood that the rotating bracket 20 can serve as a carrier for the coil 32 and the second electrical connector 52. The light-transmitting hole 25 of the rotating bracket 20 can be arranged opposite the light-transmitting hole 523 of the second electrical connector 52.

[0207] For example, the main body 521 of the second electrical connector 52 can be connected to the main body 21 of the rotating bracket 20. The extension 522 of the second electrical connector 52 can be connected to the extension 22 of the rotating bracket 20. The coil 32 can be connected to the retaining groove 27 of the extension 522 of the second electrical connector 52. The retaining structure 28 of the rotating bracket 20 can be located in the retaining hole 5211 of the main body 521 of the second electrical connector 52.

[0208] For example, the first sub-coil 321 can be located in the first limiting groove 271. The second sub-coil 322 can be located in the second limiting groove 272. It is understood that the first limiting groove 271 and the second limiting groove 272 can be used to limit the first sub-coil 321 and the second sub-coil 322, thereby reducing the risk of the first sub-coil 321 and the second sub-coil 322 shaking along the axial direction of the rotating bracket 20.

[0209] The limiting structure 28 of the rotating bracket 20 can be located on a side of the coil 32 close to the light-transmitting hole 25 of the rotating bracket 20. In this way, the limiting structure 28 can further limit the position of the coil 32, reducing the risk of the coil 32 being offset.

[0210] The Hall effect magnetic element 70 may be located in the receiving groove 241 of the protrusion 24. It is understood that the protrusion 24 may be used to protect the Hall effect magnetic element 70 and reduce the risk of interference between the Hall effect magnetic element 70 and other structures, thereby damaging the Hall effect magnetic element 70.

[0211] FIG. 20 is a partial structural diagram of an embodiment of the variable aperture 100 shown in FIG. 4 .

[0212] As shown in Figure 20, the rotating bracket 20 is connected to the fixed base 10. Exemplarily, the support portion 23 of the rotating bracket 20 can be arranged opposite to the supporting column 121 of the fixed base 10. The support portion 23 of the rotating bracket 20 can be slidably connected to the supporting column 121. Exemplarily, the support portion 23 of the rotating bracket 20 can be arranged opposite to the second portion 1212 of the supporting column 121. The support portion 23 of the rotating bracket 20 is slidably connected to the top surface of the second portion 1212 of the supporting column 121. The top surface of the second portion 1212 of the supporting column 121 is the surface of the second portion on the side away from the bottom wall 11 of the fixed base 10. At the same time, on the XY plane, the first portion 1211 of the supporting column 121 can be spaced apart from and adjacent to the rotating bracket 20. The first portion 1211 of the supporting column 121 can be located on the side of the support portion 23 of the rotating bracket 20 away from the light-transmitting hole 25.

[0213] It is understandable that the supporting column 121 of the fixing base 10 can be used to support the rotating bracket 20 . In addition, the first portion 1211 of the supporting column 121 can be located on a side of the supporting portion 23 away from the light-transmitting hole 25 .

[0214] It can be understood that when there are multiple supporting columns 121, the first parts 1211 of the multiple supporting columns 121 can be arranged around the rotating bracket 20. On the XY plane, the first parts 1211 of the multiple supporting columns 121 can also limit the rotating bracket 20.

[0215] Fig. 21 is a schematic diagram of a part of the variable aperture 100 shown in Fig. 20 at another angle. Fig. 22 is a schematic cross-sectional view of a part of the variable aperture 100 shown in Fig. 21 at BB in one embodiment.

[0216] As shown in FIG. 21 and FIG. 22 , the rotating bracket 20 and the second electrical connector 52 can surround the protrusion 13 of the fixing base 10 , and the body 21 of the rotating bracket 20 and the body 521 of the second electrical connector 52 can be located in the rotating channel 16 .

[0217] The coil 32 can be arranged facing the magnetic member 31 on the fixing base 10. The coil 32 can be located on the side of the magnetic member 31 away from the fixing base 10. For example, the first sub-coil 321 can be arranged facing the first sub-magnetic member 315 on the fixing base 10. The second sub-coil 322 can be arranged facing the second sub-magnetic member 316 on the fixing base 10.

[0218] In some embodiments, the coil 32 may be disposed facing the magnetic member 31, with the coil 32 and the magnetic member 31 arranged along the thickness direction of the variable aperture 100. Thus, compared to arrangements where the coil 32 and the magnetic member 31 are arranged along the X-axis, arrangements where the coil 32 and the magnetic member 31 are arranged along the thickness direction of the variable aperture 100 can reduce the thickness of the variable aperture 100, thereby facilitating a reduction in the volume of the variable aperture 100.

[0219] The magnetic conductive member 33 may be located on a side of the magnetic member 31 away from the coil 32 . In this way, the magnetic conductive member 33 may enhance the magnetic field of the magnetic member 31 at the coil 32 .

[0220] One end of the third electrical connector 53 can be fixedly connected to the fixing base 10 and electrically connected to the first electrical connector 51 . The other end of the third electrical connector 53 can be fixedly connected to the rotating bracket 20 and electrically connected to the second electrical connector 52 .

[0221] It is understood that when the driver chip 40 receives the aperture adjustment signal, it can output a corresponding operating current. The operating current can be sequentially transmitted to the first sub-coil 321 and the second sub-coil 322 through the first electrical connector 51, the third electrical connector 53, and the second electrical connector 52 of the electrical connection assembly 50.

[0222] When there is a current signal in the first sub-coil 321, the first sub-coil 321 and the first sub-magnetic member 315 can generate a force that interacts with each other. In this way, when the first sub-coil 321 is subjected to an action force, the first sub-coil 321 can drive the rotating bracket 20 to rotate relative to the fixed base 10. In addition, when there is a current signal in the second sub-coil 322, the second sub-coil 322 and the second sub-magnetic member 316 can generate a force that interacts with each other. In this way, when the second sub-coil 322 is subjected to an action force, the second sub-coil 322 can drive the rotating bracket 20 to rotate relative to the fixed base 10.

[0223] It is understandable that, compared with the solution using dynamic magnetic drive, dynamic magnetic drive refers to setting the coil 32 on the fixed base 10, the magnetic part 31 on the rotating bracket 20, and the rotating bracket 20 is driven by the magnetic part 31 to rotate. The present application adopts a dynamic coil drive method, that is, the magnetic part 31 is set on the fixed base 10, the coil 32 is set on the rotating bracket 20, and the rotating bracket 20 is driven by the coil 32 to rotate, and the aperture of the aperture 101 changes. This can prevent the magnetic part 31 from being affected by magnets in other components near the variable aperture 100 (such as magnets in the motor), thereby affecting the aperture adjustment of the variable aperture 100.

[0224] It is understood that by changing the magnetic position of the first sub-magnetic member 315 (i.e., the position of the south pole and north pole of the first sub-magnetic member 315) or the direction of the current signal on the first sub-coil 321, the force direction of the first sub-coil 321 is changed, thereby changing the rotation direction of the rotating bracket 20. In addition, by changing the magnetic position of the second sub-magnetic member 316 (i.e., the position of the south pole and north pole of the second sub-magnetic member 316) or the direction of the current signal on the second sub-coil 322, the force direction of the second sub-coil 322 is changed, thereby changing the rotation direction of the rotating bracket 20.

[0225] In some embodiments, when the first sub-coil 321 and the second sub-coil 322 jointly drive the rotating bracket 20 to rotate relative to the fixed base 10, the first sub-coil 321 and the second sub-coil 322 are symmetrical about the rotation center of the rotating bracket 20. This ensures that the forces exerted by the first sub-coil 321 and the second sub-coil 322 on all positions of the rotating bracket 20 are relatively even. This reduces the risk of the rotating bracket 20 tilting due to uneven forces.

[0226] It is understood that the south pole 317 and north pole 318 of the magnetic member 31 are arranged at an angle, and the direction of the Ampere force exerted on the first sub-coil 321 and the second sub-coil 322 can be tangential to the axial direction of the rotating bracket 20 and parallel to the plane of the rotating bracket 20. Most of the Ampere force exerted on the first sub-coil 321 and the second sub-coil 322 can be used to drive the rotating bracket 20 to rotate. This provides a high utilization rate of the Ampere force exerted on the first sub-coil 321 and the second sub-coil 322.

[0227] In some embodiments, the first connection end 512 of the first electrical connector 51 can be arranged along the thickness direction of the iris diaphragm 100 with the main body 511, and the first connection end 512 can be located on a side of the main body 511 that is closer to the rotating bracket 20. In this way, the first elastic clip 531 and the second elastic clip 532 can be electrically connected to the driver chip 40 via the first connection end 512 and the main body 511. The first connection end 512 can be closer to the rotating bracket 20, which facilitates the connection between the first elastic clip 531 and the second elastic clip 532 and the first connection end 512 of the first electrical connector 51.

[0228] As shown in FIG22 , the protrusion 13 of the rotating bracket 20 can be disposed opposite to the first through hole 18 of the fixing base 10 . The Hall effect element 70 in the receiving groove 241 on the protrusion 13 can be disposed facing the driving chip 40 in the first through hole 18 .

[0229] In some embodiments, the driver chip 40 may include a Hall effect sensor (not shown). The driver chip 40 can be used to detect the magnetic field strength when the Hall effect element 70 is in different positions. It is understood that the magnetic field strength of the Hall effect element 70 detected by the driver chip 40 can be used to determine the rotation angle of the rotating bracket 20 relative to the fixed base 10, thereby accurately determining the aperture size of the variable aperture 100 in the state it is in.

[0230] In some embodiments, the variable aperture 100 may not be provided with the Hall magnetic element 70 .

[0231] FIG23 is a schematic assembly diagram of an embodiment of the driver chip 40 , the electrical connection component 50 , the driver component 30 , and the filter 90 shown in FIG21 .

[0232] As shown in Figure 23, the third electrical connector 53 can be a spring. The third electrical connector 53 can include a first spring 531 and a second spring 532 spaced apart. Parts of the first spring 531 and the second spring 532 can be fixedly connected to the fixing base 10 and electrically connected to the first connection end 512 of the first electrical connector 51. The other parts of the first spring 531 and the second spring 532 can be fixedly connected to the rotating bracket 20 and electrically connected to the second electrical connector 52 of the electrical connection assembly 50. The first spring 531 and the second spring 532 can be connected to the two first connection ends 512 of the first electrical connector 51, respectively, in a one-to-one correspondence.

[0233] The first spring clip 531 and the second spring clip 532 can be used to achieve electrical connection between the first electrical connector 51 and the second electrical connector 52 of the electrical connection assembly 50. The output end of the second electrical connector 52 can be electrically connected to the input end of the first electrical connector 51 via the first spring clip 531. The input end of the second electrical connector 52 can be electrically connected to the output end of the first electrical connector 51 via the second spring clip 532. It can be understood that compared to a solution in which the third electrical connector 53 is a flexible circuit board, the assembly between the spring clips and the fixing base 10 and the rotating bracket 20 is simpler, reducing the assembly difficulty and improving the electrical connection reliability of the variable aperture 100.

[0234] FIG24 is a schematic diagram of electrical connections among the driving chip 40 , the coil 32 , the electrical connection component 50 and the computing control unit 5000 of the electronic device 1 shown in FIG23 , according to an embodiment of the present invention.

[0235] As shown in Figures 23 and 24, the driver chip 40 can be electrically connected to the calculation control unit 5000 of the electronic device 1. The calculation control unit 5000 can be used to control the movement of the variable aperture 100 to adjust the amount of light entering the camera module 1000.

[0236] For example, the power interface 431 and data interface 432 of the driver chip 40 can be electrically connected to the motor via the second connection end 513 of the first electrical connector 51. Then, the driver chip 40 can be electrically connected to the mainboard of the camera module 1000 via the circuit wiring inside the motor. The mainboard of the camera module 1000 can be electrically connected to the host circuit board 4000 via the external circuit of the camera module 1000. In this way, the driver chip 40 can be electrically connected to the computing control unit 5000 of the electronic device 1.

[0237] It is understood that the driver chip 40 can receive aperture adjustment instructions from the computing control unit 5000 via the data interface 432. Simultaneously, the electronic device 1 can supply power to the driver chip 40 via the two power interfaces 431. Based on the aperture adjustment instructions, the driver chip 40 converts the power supplied by the power interfaces 431 into operating current for the coil 32. When energized, the coil 32 can generate a force interacting with the magnetic element. Thus, when the coil 32 is subjected to a force, it can drive the rotating bracket 20 to rotate relative to the fixed base 10.

[0238] The greater the current signal within the first sub-coil 321, the greater the interaction force generated between the first sub-coil 321 and the first sub-magnetic member 315, and the greater the angle at which the first sub-coil 321 can drive the rotating bracket 20 to rotate relative to the fixed base 10. Therefore, the driver chip 40 can convert the power connected to the power interface 431 into currents of varying magnitudes and transmit them to the coil 32, based on the aperture size specifically required in the aperture adjustment instruction. Thus, by controlling the magnitude of the current transmitted to the coil 32, the angle at which the coil 32 drives the rotating bracket 20 to rotate relative to the fixed base 10 can be adjusted, thereby achieving size adjustment of the aperture hole 101 of the variable aperture 100.

[0239] In some embodiments, the driver chip 40 may be provided with a Hall sensor for detecting the magnetic field strength of the Hall magnetic element 70 at different positions. On the one hand, the driver chip 40 can determine the position of the Hall magnetic element 70 based on the current magnetic field strength of the Hall magnetic element 70, that is, accurately confirm the aperture size of the aperture hole 101 of the variable aperture 100, and further accurately determine the light flux entering the lens assembly 200 at the current position. On the other hand, when the current magnetic field strength of the Hall magnetic element 70 differs from the target magnetic field strength, the driver chip 40 can adjust the output working current based on the difference between the current magnetic field strength of the Hall magnetic element 70 and the target magnetic field strength, so that the angle driven by the coil 32 to rotate the rotating bracket 20 reaches the target angle, achieving the required target aperture size, and realizing closed-loop control.

[0240] In some embodiments, the driver chip 40 may also feed back the operating status of the variable aperture 100 to the calculation control unit 5000 via the data interface 432. For example, the driver chip 40 may feed back the current magnetic field strength of the Hall effect element 70 to the calculation control unit 5000 via the data interface 432.

[0241] In some embodiments, the filter 90 may be connected in parallel with the driver chip 40 .

[0242] In some embodiments, one end of the two first connection ends 512 on the first electrical connector 51 can be electrically connected to the two power supply interfaces 433 of the driver chip 40, respectively. One end of the first elastic clip 531 and the second elastic clip 532 can be connected to the two first connection ends 512 of the first electrical connector 51 in a one-to-one correspondence. The other ends of the first elastic clip 531 and the second elastic clip 532 can be electrically connected to the second electrical connector 52. At the same time, the coil 32 is electrically connected to the second electrical connector 52. In this way, the operating current output by the driver chip 40 can pass through the first electrical connector 51, the third electrical connector 53, and the second electrical connector 52 in sequence to reach the coil 32.

[0243] In some embodiments, the first sub-coil 321 and the second sub-coil 322 can be connected in series in a circuit. For example, the operating current output by the driver chip 40 to the coil 32 can flow along the following path: driver chip 40 - first electrical connector 51 - first spring clip 531 - second electrical connector 52 - first sub-coil 321 - second sub-coil 322 - second electrical connector 52 - second spring clip 532 - first electrical connector 51 - driver chip 40.

[0244] In some embodiments, the electrical connection assembly 50 may not include the third electrical connection member 53 . The second electrical connection member 52 may be directly connected to the first electrical connection member 51 .

[0245] It will be appreciated that in the dynamic coil drive mode, when the driver chip 40 is fixed to the rotating bracket 20, the data interface 432 and power interface 431 of the driver chip 40 need to be connected to the first electrical connector 51 via the third electrical connector 53 and the second electrical connector 52, and then electrically connected to the external circuit of the variable aperture 100 via the first electrical connector 51. The variable aperture 100 of the present application, while adopting a dynamic coil drive mode, fixes the driver chip 40 to the fixed base 10. The electrical connection between the driver chip 40 and the coil 32 is achieved through the electrical connector assembly 50, which can simplify the wiring structure of the electrical connector assembly 50. The wiring in the third electrical connector 53 is relatively simple. The coil 32 is electrically connected to the power interface of the driver chip 40 via the second electrical connector 52 and the first electrical connector 51. This eliminates the need to route the data interface 432 of the driver chip 40 from the rotating bracket 20 to the first electrical connector 51. This reduces the resistance of the rotating bracket 20 during rotation, which helps reduce the energy consumption of the variable aperture 100.

[0246] Figure 25 is a schematic structural diagram of an embodiment of the first elastic piece 531 shown in Figure 23. It is understood that the structures of the first elastic piece 531 and the second elastic piece 532 can be the same, and Figure 25 takes the structure of the first elastic piece 531 as an example for illustration.

[0247] As shown in FIG23 , the first elastic piece 531 may include a first end 5311, a deformable section 5312, and a second end 5313. The deformable section 5312 may be connected between the first end 5311 and the second end 5313. The first end 5311 may be fixedly connected to the fixing base 10, and the second end 5313 may be fixedly connected to the rotating bracket 20.

[0248] For example, the fixing base 10 may further include a first connecting post 191. The first connecting post 191 may be disposed on the side wall 12 of the fixing base 10. The rotating bracket 20 may include a second connecting post 291. The first end 5311 may be provided with a first fixing hole 5314. The second end 5313 may also be provided with a second fixing hole 5315. The first fixing hole 5314 may be sleeved on the first connecting post 191 of the fixing base 10. The second fixing hole 5315 may be sleeved on the second connecting post 291 of the rotating bracket 20. In this way, the connection between the first elastic piece 531 and the fixing base 10 and the rotating bracket 20 is more stable.

[0249] It is understandable that when the first sub-coil 321 and the second sub-coil 322 drive the rotating bracket 20 to rotate relative to the fixing base 10, the deformable section 5312 may be deformed. The deformation may include stretching, twisting, etc.

[0250] In some embodiments, the first end 5311 of the first elastic piece 531 can be fixedly connected to the fixing base 10 by heat riveting or gluing. The second end 5313 of the first elastic piece 531 can also be fixedly connected to the rotating bracket 20 by heat riveting or gluing.

[0251] In some embodiments, the first end 5311 of the first elastic piece 531 can be electrically connected to the first electrical connector 51 of the electrical connection assembly 50 by welding. The second end 5313 of the first elastic piece 531 can be electrically connected to the second electrical connector 52 of the electrical connection assembly 50 by welding.

[0252] In some embodiments, the material of the first elastic piece 531 and the second elastic piece 532 may be copper alloy.

[0253] In some embodiments, the first elastic piece 531 and the second elastic piece 532 may be formed by an etching process.

[0254] In some embodiments, the deformable segments 5312 of the first and second spring pieces 531, 532 can be shaped as a continuous "S" bend. This allows the first and second spring pieces 531, 532 to maximize their length and arc within a limited space, reducing the spring's stiffness coefficient (k value), and enhancing the reliability of the third electrical connector 53. In other embodiments, the deformable segments 5312 of the first and second spring pieces 531, 532 can also be shaped as a continuous "Z" bend.

[0255] In some embodiments, the rotation radius of the rotating bracket 20 may be 6 millimeters (mm). The rotation angle of the rotating bracket 20 may be ±5°. The rotation radius of the rotating bracket 20 may be the distance between the rotation center of the rotating bracket 20 and the connection point of the third electrical connector 53 with the rotating bracket 20.

[0256] In some embodiments, the rotational torque of the first elastic leaf 531 or the second elastic leaf 532 can be less than or equal to 10 millinewton·millimeter (mN·mm). When the rotation radius of the rotating bracket 20 can be 6 mm and the rotation angle of the rotating bracket 20 can be ±5°, the stiffness coefficient (k value) of the first elastic leaf 531 or the second elastic leaf 532 can be less than or equal to 1.6 millinewton per millimeter (mN / mm).

[0257] It is understood that the greater the rotational torque of the spring, the greater the resistance generated by the spring deformation that the rotating bracket 20 must overcome during rotation, and the greater the force required between the coil 32 and the magnetic member 31. In other words, when the rotation angle of the rotating bracket 20 remains constant, the greater the rotational torque of the spring, the greater the current required to be output to the coil 32, and the higher the power consumption of the variable aperture 100. Therefore, setting the rotational torque to less than or equal to 10 mN·mm and the stiffness coefficient (k value) to less than or equal to 1.6 millinewtons per millimeter (mN / mm) helps reduce the force generated by the spring deformation during rotation of the rotating bracket 20, thereby reducing the energy consumption of the variable aperture 100.

[0258] In other embodiments, the stiffness coefficient (k value) of the first elastic piece 531 or the second elastic piece 532 may also be less than or equal to 1.6 mN / mm.

[0259] In some embodiments, the thickness D of the first elastic piece 531 and the second elastic piece 532 may be in the range of 0.03 mm to 0.05 mm.

[0260] In some embodiments, the width L of the first elastic piece 531 and the second elastic piece 532 may be in the range of 0.06 mm to 0.1 mm.

[0261] It is understandable that by controlling the thickness D and the diameter L of the first spring piece 531 and the second spring piece 532 within a smaller range, it is beneficial to reduce the stiffness coefficient (k value) of the first spring piece 531 and the second spring piece 532, so that the rotational torque of the first spring piece 531 and the second spring piece 532 is smaller, thereby reducing the energy loss of the variable aperture 100 during the aperture adjustment process.

[0262] In other embodiments, the thickness D of the first elastic piece 531 and the second elastic piece 532 may also be greater than 0.05 mm or less than 0.03 mm. The width L of the first elastic piece 531 and the second elastic piece 532 may also be greater than 0.1 mm or less than 0.06 mm.

[0263] It is understood that the first elastic piece 531 and the second elastic piece 532 are not only used to electrically connect the first electrical connector 51 of the electrical connection assembly 50 to the second electrical connector 52. Furthermore, when the rotatable bracket 20 returns to its initial state after rotation, the first elastic piece 531 and the second elastic piece 532 recover their deformation and provide elastic force to help the rotatable bracket 20 return to its original position, thereby accelerating the recovery speed of the rotatable bracket 20.

[0264] FIG. 26 is a schematic diagram of an assembly of the magnetic member 31 and the magnetic attraction sheet 80 shown in FIG. 5 , according to an embodiment of the present invention.

[0265] As shown in FIG26 , along the thickness direction (Z-axis direction) of the variable aperture (100), the projection of the magnetic field center N of the magnetic sheet 80 on the fixed seat 10 (XY plane) is offset from the projection of the magnetic field center M of the magnetic part 31 on the fixed seat 10 (XY plane). In this way, the magnetic sheet 80 can generate an interaction force F with the magnetic part 31 that forms an acute angle with the XY plane. F can be decomposed into F1 and F2. Among them, the direction of F1 is along the magnetic field center N on the XY plane toward the magnetic part 31. The direction of F2 is along the magnetic field center N on the Z-axis direction toward the magnetic part 31.

[0266] It is understandable that the magnetic sheet can help the rotating bracket 20 quickly return to the initial position after the rotating bracket 20 rotates relative to the fixing base 10.

[0267] In some embodiments, the magnetic sheet 80 can be disposed opposite to the magnetic member 31. In this way, the interaction force generated between the magnetic sheet 80 and the magnetic member 31 is strong, which is conducive to quickly returning the rotating bracket 20 to the initial position.

[0268] In some embodiments, the number of magnetic sheets 80 may be two.

[0269] FIG. 27 is an enlarged schematic diagram of an embodiment of point C shown in FIG. 20 .

[0270] As shown in FIG27 , the surface of the support portion 23 connected to the bearing column 121 may be provided with a groove 231, and the opening of the groove 231 may face the bearing column 121. It is understood that when the support portion 23 is slidably connected to the bearing column 121, the contact area between the support portion 23 and the bearing column 121 can be reduced by providing the groove 231, thereby reducing friction.

[0271] The number of grooves can be one or more.

[0272] Fig. 28 is a partial structural schematic diagram of the variable aperture 100 shown in Fig. 21 at another angle. Fig. 29 is an enlarged schematic diagram of an embodiment at D in Fig. 28 .

[0273] As shown in Figures 28 and 29, the rotating bracket 20 can be disposed around the protrusion 13 of the fixed base 10, and the variable aperture 100 can further include a protrusion 201. The protrusion 201 can be located between the rotating bracket 20 and the protrusion 13 of the fixed base 10. It will be understood that the protrusion 201 can be used to limit the position of the rotating bracket 20 and the fixed base 10 in the XY plane.

[0274] In some embodiments, the number of the protrusions 201 may be one or more. For example, the number of the protrusions 201 may be four, and the four protrusions 201 are evenly spaced and arranged around the protrusion 13 of the fixing base 10 .

[0275] In some embodiments, the protrusion 201 may be located on a surface of the body 21 of the rotating bracket 20 close to the protrusion 13 of the fixing seat 10 .

[0276] In some embodiments, the protrusion 201 and the rotating bracket 20 may be an integral structural component.

[0277] In some embodiments, the protrusion 201 may also be located on a surface of the protrusion 13 of the fixing seat 10 close to the rotating bracket 20 .

[0278] In some embodiments, the protrusion 201 and the fixing base 10 may be an integral structural component.

[0279] In some embodiments, the shape of the protrusion 201 can be a dot or line segment. It is understood that the specific shape of the protrusion 201 is not limited in this application, and those skilled in the art can design it according to needs.

[0280] It can be understood that, compared with the solution of setting a ball bearing between the rotating bracket 20 and the fixed base 10 for limiting, the present application uses the protrusion 201 as a limiter, and the limiting friction between the rotating bracket 20 and the fixed base 10 is simply the friction between plastic parts, which can reduce costs, reduce the structural complexity of the variable aperture 100, and simplify the assembly process of the variable aperture 100.

[0281] FIG30 is a partial structural diagram of an embodiment of the variable aperture 100 shown in FIG4 .

[0282] As shown in FIG30 , the gasket 61 can be annular. The gasket 61 has a light-transmitting hole 611. The light-transmitting hole 611 of the gasket 61 can communicate with the light-transmitting hole 15 of the fixing base 10. The aperture of the light-transmitting hole 611 of the gasket 61 remains constant. The light-transmitting hole 611 of the gasket 61 can serve as a setting of the aperture 101 of the variable aperture 100.

[0283] In some embodiments, the gasket 61 may be provided with a plurality of spaced apart fixing holes 612. For example, the number of fixing holes 612 may be equal to the number of fixing posts 19 of the fixing base 10, i.e., the number of fixing holes 612 may be six. In some embodiments, the plurality of fixing holes 612 may be located around the light-transmitting hole 611 of the gasket 61 and arranged around the light-transmitting hole 611 of the gasket 61.

[0284] In some embodiments, the gasket 61 is fixedly connected to the top of the fixing base 10. For example, the multiple fixing posts 19 of the fixing base 10 pass through the multiple fixing holes 612 of the gasket 61 in a one-to-one correspondence, that is, one fixing post 19 passes through one fixing hole 612. It will be appreciated that the gasket 61 is not easily shaken in the XY plane due to the mating of the fixing holes 612 of the gasket 61 with the fixing posts 19 of the rotating bracket 20.

[0285] In one embodiment, the central axis of the light-transmitting hole 611 of the gasket 61 may coincide with the central axis of the light-transmitting hole 15 of the fixing base 10. The central axis of the light-transmitting hole 611 of the gasket 61 refers to a virtual axis passing through the center of the light-transmitting hole 611 of the gasket 61 and perpendicular to the plane on which the gasket 61 is located. In other embodiments, the central axis of the light-transmitting hole 611 of the gasket 61 and the central axis of the light-transmitting hole 15 of the fixing base 10 may not coincide.

[0286] Fig. 31 is a schematic structural diagram of an embodiment of the blade 62 shown in Fig. 5 at different angles. Fig. 31 takes one of the blades 62 as an example to specifically describe the structure of the blade 62.

[0287] As shown in FIG31 , the blade 62 may include a first portion 621 and a second portion 622 connected to the first portion 621. The first portion 621 of the blade 62 is primarily used to connect to the fixed base 10. The second portion 622 of the blade 62 is primarily used to connect to the rotating bracket 20. It should be understood that, to facilitate description of the specific structure of the blade 62, FIG31 schematically distinguishes the first portion 621 of the blade 62 from the second portion 622 of the blade 62 by dashed lines, but this does not affect the integrally formed structure of the blade 62.

[0288] For example, the first portion 621 of the blade 62 may be provided with a rotation hole 623. For example, the rotation hole 623 may be a circular hole.

[0289] For example, the second portion 622 of the blade 62 may be provided with a guide hole 624. For example, the guide hole 624 may be an arc-shaped hole.

[0290] Fig. 32 is a partial structural diagram of an embodiment of the variable aperture 100 shown in Fig. 4. Fig. 32 takes one of the blades 62 as an example to specifically describe the connection relationship between the blade 62, the fixed base 10, and the rotating bracket 20.

[0291] As shown in FIG32 , the first portion 621 of the blade 62 is connected to the fixing base 10 , and the second portion 622 of the blade 62 can be connected to the rotating bracket 20 .

[0292] Exemplarily, the first portion 621 of the blade 62 can be rotatably connected to the fixed base 10. Exemplarily, the multiple rotating posts 17 of the fixed base 10 pass through the multiple rotating holes 623 of the blades 62 in a one-to-one correspondence, that is, one rotating post 17 of the fixed base 10 passes through the rotating hole 623 of one blade 62. It will be understood that the hole wall of the rotating hole 623 can rotate relative to the rotating post 17. Thus, through the cooperation between the rotating hole 623 and the rotating post 17, the blade 62 can rotate relative to the fixed base 10 with the rotating post 17 as the rotation axis. In this case, the rotating post 17 can both limit the position of the gasket 61 and serve as the rotation axis for the blade 62 to rotate.

[0293] The second portion 622 of the blade 62 can be slidably connected to the rotating bracket 20. For example, the plurality of guide posts 26 of the rotating bracket 20 pass through the guide holes 624 of the plurality of blades 62 in a one-to-one correspondence. That is, one guide post 26 of the rotating bracket 20 passes through the guide hole 624 of one blade 62. It will be appreciated that the guide post 26 can slide relative to the wall of the guide hole 624. Thus, through the cooperation between the guide hole 624 and the guide post 26, the blade 62 can be slidably connected to the rotating bracket 20.

[0294] The multiple blades 62 can be distributed in a ring shape and together surround a light-transmitting hole 625. The light-transmitting hole 625 surrounded by the multiple blades 62 can be connected to the light-transmitting hole 611 of the gasket 61. The multiple blades 62 can be located on the top of the gasket 61, that is, the multiple blades 62 can be located on the side of the gasket 61 away from the fixed seat 10. It can be understood that since the first part 621 of each blade 62 can be rotatably connected to the fixed seat 10, the second part 622 of each blade 62 can be slidably connected to the rotating bracket 20, at this time the coil 32 can drive the rotating bracket 20 to rotate relative to the fixed seat 10 with the cooperation of the magnetic part 31, the multiple blades 62 can be expanded or closed, and the aperture of the light-transmitting hole 625 surrounded by the multiple blades 62 can be enlarged or reduced.

[0295] In one embodiment, when the iris diaphragm 100 is in an initial state or an intermediate state, the maximum aperture of the light-transmitting holes 625 of the plurality of blades 62 is smaller than the aperture of the light-transmitting hole 611 of the spacer 61. In this case, the light-transmitting holes 625 of the plurality of blades 62 constitute the aperture 101 of the iris diaphragm 100, meaning that the light-transmitting holes 625 of the plurality of blades 62 can control the luminous flux of ambient light.

[0296] When the iris diaphragm 100 is in the end state, the apertures 625 of the plurality of blades 62 have a diameter greater than or equal to that of the aperture 611 of the spacer 61. The aperture 611 of the spacer 61 may constitute the aperture 101 of the iris diaphragm 100.

[0297] It can be understood that the coil 32 can drive the rotating bracket 20 to rotate relative to the fixed base 10, the multiple blades 62 can be expanded or closed, and the aperture of the light-transmitting hole 625 surrounded by the multiple blades 62 can be enlarged or reduced, thereby adjusting the size of the aperture hole 101 of the variable aperture 100 and controlling the amount of light entering the camera module 1000.

[0298] In one embodiment, the central axis of the light-transmitting holes 625 of the plurality of blades 62 may coincide with the central axis of the rotating bracket 20. The central axis of the light-transmitting holes 625 of the plurality of blades 62 refers to a virtual axis passing through the center of the light-transmitting holes 625 of the plurality of blades 62 and perpendicular to the plane in which the plurality of blades 62 lie. In other embodiments, the central axis of the light-transmitting holes 625 of the plurality of blades 62 may not coincide with the central axis of the rotating bracket 20.

[0299] In other embodiments, the first portion 621 of the blade 62 may also be slidably connected to the fixing base 10 , and the second portion 622 of the blade 62 may be rotatably connected to the rotating bracket 20 .

[0300] FIG33 is a partial structural diagram of an embodiment of the variable aperture 100 shown in FIG4 .

[0301] As shown in FIG33 , the upper cover 63 may be annular. The inner side of the upper cover 63 may enclose a light-transmitting hole 631. The upper cover 63 may be provided with a plurality of spaced limiting holes 632. The plurality of limiting holes 632 may be arranged around the light-transmitting hole 631 of the upper cover 63.

[0302] In some embodiments, the upper cover 63 can be fixedly connected to the side wall 12 of the fixing base 10. The upper cover 63 can be located on a side of the plurality of blades 62 away from the fixing base 10, and the upper cover 63 can cover the plurality of blades 62. In the Z-axis direction, the upper cover 63 can limit the plurality of blades 62 to prevent the plurality of blades 62 from falling out.

[0303] In some embodiments, the light holes 631 of the upper cover 63 can be arranged opposite to the light holes 625 of the plurality of blades 62. Ambient light can be transmitted through the light holes 631 of the upper cover 63 to the light holes 625 of the plurality of blades 62, pass through the light holes 611 of the gasket 61, and finally enter the receiving space 14 of the fixing base 10 to be received by the camera.

[0304] In some embodiments, a portion of the fixing post 19 of the fixing base 10 may be located within the limiting hole of the upper cover 63. It is understood that, through the cooperation between the limiting hole of the upper cover 63 and the fixing post 19 of the fixing base 10, the upper cover 63 is not easy to shake in the XY plane.

[0305] In some embodiments, the central axis of the light-transmitting hole 631 of the upper cover 63 may coincide with the central axis of the light-transmitting holes 625 of the plurality of blades 62. In other embodiments, the central axis of the light-transmitting hole 631 of the upper cover 63 may not coincide with the central axis of the light-transmitting holes 625 of the plurality of blades 62.

[0306] The structure of a variable aperture 100 is described in detail above, in conjunction with the relevant drawings. The variable aperture 100 provided in this application includes a fixed base 10, a rotating bracket 20, a coil 32, a magnetic member 31, a driver chip 40, a first electrical connector 51, a second electrical connector 52, and a plurality of blades 62. The rotating bracket 20 is rotatably connected to the fixed base 10. A portion of the blades 62 is connected to the fixed base 10, and a portion of the blades 62 is connected to the rotating bracket 20. Together, the plurality of blades 62 define an aperture 101. The coil 32 is mounted on the rotating bracket 20, and the magnetic member 31 is mounted on the fixed base 10, facing the magnetic member 31. The coil 32 is used to drive the rotating bracket 20 to rotate relative to the fixed base 10, thereby changing the aperture 101. It is understood that, compared to a solution employing a moving magnet drive, the coil 32 is mounted on the fixed base 10, and the magnetic member 31 is mounted on the rotating bracket 20, with the magnetic member 31 driving the rotating bracket 20 to rotate. The present application adopts a dynamic coil driving method, that is, the magnetic part 31 is arranged on the fixed base 10, and the coil 32 is arranged on the rotating bracket 20, and the rotating bracket 20 is driven by the coil 32 to rotate. This can prevent the magnetic part 31 from being affected by the magnets in other components near the variable aperture 100 (such as the magnet in the motor), thereby affecting the aperture adjustment of the variable aperture 100.

[0307] Meanwhile, the driver chip 40 and the first electrical connector 51 are both disposed on the fixed base 10, and the second electrical connector 52 is disposed on the rotating bracket 20. The first electrical connector 51 is electrically connected to the second electrical connector 52, and the coil 32 is electrically connected to the power supply interface 433 of the driver chip 40 via the second electrical connector 52 and the first electrical connector 51. It will be appreciated that, compared to the solution in which the driver chip 40 is fixed to the rotating bracket 20, the variable aperture 100 of the present application, while employing a dynamic coil drive method, also fixes the driver chip 40 to the fixed base. The coil 32 is electrically connected to the power supply interface of the driver chip 40 via the second electrical connector 52 and the first electrical connector 51. This eliminates the need for wiring connecting the data interface 432 of the driver chip 40 from the rotating bracket 20 to the fixed base 10, simplifying the wiring structure of the electrical connection assembly 50. The rotating bracket 20 experiences less resistance during rotation, which helps reduce the power consumption of the variable aperture 100.

[0308] A specific embodiment of the variable aperture 100 has been described above in detail with reference to the relevant drawings. Hereinafter, several embodiments of the variable aperture 100 will be described with reference to the relevant drawings.

[0309] In some embodiments, the same technical contents as those in the previous embodiments are not described in detail. FIG34 is a schematic structural diagram of another embodiment of the variable aperture 100 shown in FIG4. FIG35 is a partially exploded schematic diagram of an embodiment of the variable aperture 100 shown in FIG34.

[0310] As shown in Figures 34 and 35, the variable aperture 100 may include a fixed base 10, a rotating bracket 20, a drive assembly 30, a drive chip 40, an electrical connection assembly 50, a blade assembly 60, a Hall effect element 70, and a magnetic attraction sheet 80. For example, the drive assembly 30 may include a magnetic element 31, a coil 32, and a magnetic conductive element 33. The electrical connection assembly 50 may include a first electrical connector 51, a second electrical connector 52, and a third electrical connector 53. The blade assembly 60 may include a gasket 61, a plurality of blades 62, and an upper cover 63.

[0311] Fig. 36 is a schematic diagram of the assembly of the first electrical connector 51 and the fixing base 10 shown in Fig. 35. Fig. 37 is a schematic cross-sectional view of the fixing base 10 shown in Fig. 36.

[0312] As shown in Figures 36 and 37 , the first electrical connector 51 may be a metal terminal. The first electrical connector 51 may be embedded in the fixing base 10. A portion of the first electrical connector 51 may be exposed from the side of the bottom wall 11 of the fixing base 10, and a portion of the first electrical connector 51 may be exposed from the first through hole 18.

[0313] The first electrical connector 51 of the electrical connector assembly 50 can be formed into an integral structural component with the fixing base 10 through an insert molding process. Insert molding refers to a molding process in which a pre-prepared insert is placed in a mold, molten material is injected, and the molten material and the insert are bonded and solidified to form an integrated product.

[0314] It is understood that the first electrical connector 51 of the electrical connection assembly 50 and the fixing base 10 are formed into an integrated structure through an insert molding process, which can reduce the number of assembled parts, the number of assembly steps, and the difficulty of assembly of the variable aperture 100. Furthermore, the fixing base 10 can protect the first electrical connector 51 of the electrical connection assembly 50, reducing the risk of damage to the first electrical connector 51 of the electrical connection assembly 50, thereby improving the reliability of the electrical connection assembly 50 of the variable aperture 100.

[0315] FIG38 is a schematic assembly diagram of an embodiment of the first electrical connector 51 , the driver chip 40 , and the filter 90 shown in FIG35 .

[0316] As shown in FIG38 , the first electrical connector 51 of the electrical connection assembly 50 may include a first trace 514, a second trace 515, and a third trace 516 spaced apart. For example, there may be two first traces 514, two second traces 515, and two third traces 516.

[0317] In some embodiments, one end of the first trace 514 may be electrically connected to the power interface 431 of the driver chip 40 (as shown in FIG. 12 ), and the other end may be connected to an external circuit of the variable aperture 100 .

[0318] In some embodiments, one end of the second trace 515 may be electrically connected to the data interface 432 of the driver chip 40 (as shown in FIG. 12 ), and the other end may be connected to an external circuit of the variable aperture 100 .

[0319] In some embodiments, one end of the third trace 516 can be electrically connected to the power supply interface 433 of the driver chip 40 (as shown in FIG12 ), and the other end can be connected to the third electrical connector 53. In some embodiments, the first electrical connector 51 of the electrical connection assembly 50 can be made of metal. When the third electrical connector 53 is a spring, the spring can be electrically connected to the third trace 516 of the first electrical connector 51 by welding.

[0320] In some embodiments, the variable aperture 100 may further include a filter 90. The two first traces 514 may be electrically connected to both the two power supply interfaces 433 of the driver chip 40 and the filter 90. Thus, the filter 90 may be connected in parallel with the driver chip 40 via the first traces 514. The filter 90 may be used to filter the current supplied to the driver chip 40, thereby preventing the driver chip 40 from being interfered with by radio frequency signals.

[0321] In some embodiments, the driver chip 40 and the filter 90 may be connected to the first electrical connector 51 by welding.

[0322] In some embodiments, the same technical contents as those in the previous embodiments are not described in detail. FIG39 is a schematic structural diagram of another embodiment of the variable aperture 100 shown in FIG4. FIG40 is a partially exploded schematic diagram of an embodiment of the variable aperture 100 shown in FIG39.

[0323] As shown in Figures 39 and 40, the variable aperture 100 may include a fixed base 10, a rotating bracket 20, a driving assembly 30, a driving chip 40, an electrical connection assembly 50, a blade assembly 60, a Hall effect magnet 70, a magnetic attraction sheet 80, and a filter 90. For example, the driving assembly 30 may include a magnetic member 31, a coil 32, and a magnetic conductive member 33. The electrical connection assembly 50 may include a first electrical connector 51, a second electrical connector 52, and a third electrical connector 53. The blade assembly 60 may include a gasket 61, a plurality of blades 62, and an upper cover 63.

[0324] Figure 41 is a schematic diagram of an assembly of the third electrical connector 53 and the fixing base 10 shown in Figure 40. Figure 42 is a schematic diagram of an assembly of the electrical connection assembly 50 and the coil 32, the driver chip 40, and the filter 90 shown in Figure 40.

[0325] As shown in Figures 39, 41, and 42, the third electrical connector 53 can be a flexible circuit board. The third electrical connector 53 can include a first end 533, a connecting portion 534, and a second end 535. The connecting portion 534 is connected between the first end 533 and the second end 535. The first end 533 of the third electrical connector 53 is fixed to the fixing base 10 and electrically connected to the first electrical connector 51. The connecting portion 534 is located within the rotating channel 16. The second end 535 can be fixed to the rotating bracket and electrically connected to the second electrical connector 52. In this way, the second electrical connector 52 can be electrically connected to the first electrical connector 51 via the flexible circuit board.

[0326] In some embodiments, the sidewalls 12 , the protrusions 13 , and the bottom wall 11 of the fixing base 10 may define a rotation channel 16 . The rotating bracket 20 may rotate within the rotation channel 16 , and the flexible printed circuit board may be partially located within the rotation channel 16 and surround at least a portion of the protrusion 13 .

[0327] In some embodiments, the connecting portion 534 may include a redundant length. For example, the length of the connecting portion 534 of the third electrical connector 53 may be greater than the length of the rotation channel 16 through which the connecting portion 534 passes.

[0328] It is understood that the third electrical connector 53 may be a flexible circuit board. Furthermore, the third electrical connector 53 has a long redundant length, which can minimize the reaction force during the rotation of the rotating bracket 20 of the variable aperture 100, further reducing power consumption. Furthermore, the flexible circuit board has a certain degree of flexibility and is relatively impact-resistant, which improves the electrical connection reliability between the first electrical connector 51 and the second electrical connector 52.

[0329] In some embodiments, the third electrical connector 53 can be fixedly connected to the fixing base 10 by means of heat riveting or gluing.

[0330] In some embodiments, the third electrical connector 53 can be fixedly connected to the rotating bracket 20 by means of heat riveting or gluing.

[0331] As shown in FIG. 41 , the first end portion 533 and the second end portion 535 of the third electrical connector 53 may be located on both sides of the protrusion 13 of the fixing base 10 .

[0332] In other embodiments, the first end 533 and the second end 535 of the third electrical connector 53 may be adjacent to each other.

[0333] In other embodiments, the third electrical connector 53 may also be disposed around the entire protrusion 13. That is, the third electrical connector 53 may be a full-circle flexible circuit board.

[0334] It is understandable that the position where the first end 533 is connected to the fixing base 10 and the position where the second end 535 is connected to the rotating bracket 20 can be set by those skilled in the art according to actual conditions.

[0335] As shown in FIG42 , the third electrical connector 53 may include a first trace and a second trace (not shown). The first trace and the second trace may be used to achieve electrical conduction between the first electrical connector 51 and the second electrical connector 52. For example, the flow path of the operating current output by the driver chip 40 to the coil 32 may be: driver chip 40—first electrical connector 51—first trace—second electrical connector 52—first sub-coil 321—second sub-coil 322—second electrical connector 52—second trace—first electrical connector 51—driver chip 40.

[0336] It can be understood that, compared to a solution in which the driver chip 40 is fixed to the rotating bracket 20 and then electrically connected to the external circuitry of the variable aperture 100 via a flexible printed circuit board, fixing the driver chip 40 to the mounting base reduces the number of traces in the flexible printed circuit board and reduces the complexity of the circuit connectivity within the flexible printed circuit board. The reduced number of traces in the third electrical connector 53 and the increased flexibility of the third electrical connector 53 result in less resistance to the rotation of the rotating bracket 20. For the same rotation angle of the rotating bracket 20, the coil 32 requires less operating current, resulting in lower power consumption for the variable aperture 100.

[0337] In some embodiments, the variable aperture 100 can also omit the third electrical connector 53, and the second electrical connector 52 can be a flexible circuit board of a specific shape, which is fixedly connected to the rotating bracket 20 and the fixed seat 10 by bending and folding, and at the same time achieves electrical conduction with the first electrical connector 51.

[0338] The above description, combined with the relevant drawings, details the structures of several variable aperture diaphragms 100. The variable aperture 100 provided in this application includes a fixed base 10, a rotating bracket 20, a coil 32, a magnetic member 31, a driver chip 40, a first electrical connector 51, a second electrical connector 52, and a plurality of blades 62. The rotating bracket 20 is rotatably connected to the fixed base 10. A portion of the blades 62 is connected to the fixed base 10, and a portion of the blades 62 is connected to the rotating bracket 20. Together, the plurality of blades 62 define an aperture 101. The coil 32 is disposed on the rotating bracket 20, and the magnetic member 31 is disposed on the fixed base 10, facing the magnetic member 31. The coil 32 is used to drive the rotating bracket 20 to rotate relative to the fixed base 10, thereby changing the aperture 101. It will be appreciated that, compared to a solution employing a dynamic magnetic drive, the coil 32 is disposed on the fixed base 10, and the magnetic member 31 is disposed on the rotating bracket 20, with the magnetic member 31 driving the rotating bracket 20 to rotate. The present application adopts a dynamic coil driving method, that is, the magnetic part 31 is arranged on the fixed base 10, and the coil 32 is arranged on the rotating bracket 20, and the rotating bracket 20 is driven by the coil 32 to rotate. This can prevent the magnetic part 31 from being affected by the magnets in other components near the variable aperture 100 (such as the magnet in the motor), thereby affecting the aperture adjustment of the variable aperture 100.

[0339] Meanwhile, the driver chip 40 and the first electrical connector 51 are both disposed on the fixed base 10, and the second electrical connector 52 is disposed on the rotating bracket 20. The first electrical connector 51 is electrically connected to the second electrical connector 52, and the coil 32 is electrically connected to the power supply interface 433 of the driver chip 40 via the second electrical connector 52 and the first electrical connector 51. It will be appreciated that, compared to the solution in which the driver chip 40 is fixed to the rotating bracket 20, the variable aperture 100 of the present application, while employing a dynamic coil drive method, also fixes the driver chip 40 to the fixed base. The coil 32 is electrically connected to the power supply interface of the driver chip 40 via the second electrical connector 52 and the first electrical connector 51. This eliminates the need for wiring connecting the data interface 432 of the driver chip 40 from the rotating bracket 20 to the fixed base 10, simplifying the wiring structure of the electrical connection assembly 50. The rotating bracket 20 experiences less resistance during rotation, which helps reduce the power consumption of the variable aperture 100.

[0340] It should be noted that, in the absence of conflict, different embodiments and features in the embodiments of this application can be combined with each other, and any combination of features in different embodiments is also within the scope of protection of this application. That is to say, the multiple embodiments described above can also be arbitrarily combined according to actual needs.

[0341] It should be noted that all the above drawings are for illustrative purposes only and do not represent the actual size of the product. Furthermore, the dimensional ratios between the components in the drawings are not intended to limit the actual product of the present application.

[0342] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art 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 variable aperture (100), characterized in that: It comprises a fixed seat (10), a rotating bracket (20), a coil (32), a magnetic member (31), a driving chip (40), a first electrical connection member (51), a second electrical connection member (52), and a plurality of blades (62); The rotating bracket (20) is rotatably connected to the fixed seat (10), a portion of the blade (62) is connected to the fixed seat (10), a portion of the blade (62) is connected to the rotating bracket (20), and a plurality of the blades (62) together surround an aperture hole (101); The coil (32) is arranged on the rotating bracket (20), the magnetic member (31) is arranged on the fixed seat (10), the coil (32) is arranged facing the magnetic member (31), and the coil (32) is used to drive the rotating bracket (20) to rotate relative to the fixed seat (10), so that the aperture of the aperture hole (101) changes; The driving chip (40) and the first electrical connector (51) are both arranged on the fixing seat (10), the second electrical connector (52) is arranged on the rotating bracket (20), the first electrical connector (51) is electrically connected to the second electrical connector (52), and the coil (32) is electrically connected to the power supply interface (433) of the driving chip (40) through the second electrical connector (52) and the first electrical connector (51).

2. The variable aperture (100) according to claim 1, characterized in that: The variable aperture (100) comprises a first spring piece (531), and the output end of the second electrical connection member (52) is electrically connected to the input end of the first electrical connection member (51) through the first spring piece (531).

3. The variable aperture (100) according to claim 2, characterized in that: A portion of the first elastic piece (531) is fixed to the fixing seat (10), and another portion of the first elastic piece (531) is fixed to the rotating bracket (20).

4. The variable aperture (100) according to claim 2 or 3, characterized in that: The first elastic piece (531) comprises a first end (5311), a deformation section (5312) and a second end (5313); the deformation section (5312) is connected between the first end (5311) and the second end (5313); the first end (5311) is fixed to the fixing seat (10), and the second end (5313) is fixed to the rotating bracket (20); The deformation section (5312) is a continuous "S" shape.

5. The variable aperture (100) according to claim 4, characterized in that: The first end (5311) is provided with a first fixing hole (5314), the second end (5313) is provided with a second fixing hole (5315), the fixing seat (10) is provided with a first connecting column (191), and the rotating bracket (20) is provided with a second connecting column (291); The first fixing hole (5314) is sleeved on the first connecting column (191), and the second fixing hole (5315) is sleeved on the second connecting column (291).

6. The variable aperture (100) according to any one of claims 2 to 5, characterized in that: The stiffness coefficient of the first elastic piece (531) is less than or equal to 1.6 mN / mm.

7. The variable aperture (100) according to claim 1, characterized in that: The second electrical connection member (52) is electrically connected to the first electrical connection member (51) via a flexible circuit board.

8. The variable aperture (100) according to claim 7, characterized in that: The fixing seat (10) comprises a bottom wall (11), a side wall (12) and a convex portion (13); the side wall (12) and the convex portion (13) are arranged on the bottom wall (11) at intervals; the bottom wall (11), the side wall (12) and the convex portion (13) are annular in shape; and the side wall (12) surrounds the convex portion (13); The bottom wall (11), the side wall (12) and the protrusion (13) surround the rotation channel (16), the rotation bracket (20) rotates in the rotation channel (16), and the flexible circuit board is partially located in the rotation channel (16) and surrounds at least a portion of the protrusion (13).

9. The variable aperture (100) according to any one of claims 1 to 8, characterized in that: The first electrical connector (51) is a metal terminal, and the first electrical connector (51) is embedded in the fixing seat (10).

10. The variable aperture (100) according to any one of claims 1 to 8, characterized in that: The first electrical connector (51) is a flexible circuit board, comprising a main body (511), a first connection end (512) and a second connection end (513), wherein the first connection end (512) and the second connection end (513) are connected to the main body (511) at intervals and are electrically connected to the main body (511), and the main body (511) is connected to a side of the fixing seat (10) away from the rotating bracket (20); The driving chip (40) is connected to the main body (511), and the coil (32) is connected to the main body (511) through the second electrical connection member (52) and the The first connection end (512) and the main body (511) are electrically connected to a power supply interface (433) of the driving chip (40), and the driving chip (40) is electrically connected to an external circuit of the variable aperture (100) through the main body (511) and the second connection end (513).

11. The variable aperture (100) according to claim 10, characterized in that: The first connection end (512) and the main body (511) are arranged along the thickness direction of the variable aperture (100), and the first connection end (512) is located on a side of the main body (511) close to the rotating bracket (20).

12. The variable aperture (100) according to any one of claims 1 to 11, characterized in that: The coil (32) is arranged facing the magnetic member (31), and the coil (32) and the magnetic member (31) are arranged along the thickness direction of the variable aperture (100).

13. The variable aperture (100) according to any one of claims 1 to 12, characterized in that: The magnetic member (31) comprises a south pole (317) and a north pole (318), and the direction of the south pole (317) and the direction of the north pole (318) are arranged at an angle.

14. The variable aperture (100) according to any one of claims 1 to 13, characterized in that: The variable aperture (100) further comprises a magnetic conductive member (33), wherein the magnetic conductive member (33) is located on a side of the magnetic member (31) away from the coil (32).

15. The variable aperture (100) according to claim 14, characterized in that: The magnetic member (31) comprises a bottom surface (312) and an outer side surface (313), the bottom surface (312) being a side surface of the magnetic member (31) away from the coil (32), and the outer side surface (313) being a side surface of the magnetic member (31) away from the center of the fixing seat (10); The magnetic conductive component (33) connects the outer side surface (313) and the bottom surface (312) of the magnetic component (31).

16. The variable aperture (100) according to any one of claims 1 to 15, characterized in that: The coil (32) comprises a first sub-coil (321) and a second sub-coil (322) which are arranged at intervals, the magnetic member (31) comprises a first sub-magnetic member (315) and a second sub-magnetic member (316) which are arranged at intervals, the first sub-coil (32) is arranged facing the first sub-magnetic member (315), and the second sub-coil (32) is arranged facing the second sub-magnetic member (316); The first sub-coil (321) and the second sub-coil (322) are used to jointly drive the rotating bracket (20) to rotate relative to the fixed base (10); the first sub-coil (321) and the second sub-coil (322) are symmetrical about the rotation center of the rotating bracket (20).

17. The variable aperture (100) according to any one of claims 1 to 16, characterized in that: The variable aperture (100) further comprises a Hall magnetic component (70), the Hall magnetic component (70) being connected to the rotating bracket (20), the Hall magnetic component (70) being arranged facing the driving chip (40), and the driving chip (40) being further used to detect the magnetic field strength of the Hall magnetic component (70) at different positions.

18. The variable aperture (100) according to any one of claims 1 to 17, characterized in that: The variable aperture (100) further comprises a magnetic attraction sheet (80), wherein the magnetic attraction sheet (80) is connected to the rotating bracket (20), and the magnetic attraction sheet (80) cooperates with the magnetic member (31) to drive the rotating bracket (20) to rotate relative to the fixed seat (10), so that the aperture of the aperture hole (101) becomes smaller; Along the thickness direction of the variable aperture (100), the projection of the magnetic field center of the magnetic attraction sheet (80) on the fixing seat (10) is staggered from the projection of the magnetic field center of the magnetic member (31) on the fixing seat (10).

19. A camera module (1000), characterized in that: It comprises a lens assembly (200) and a variable aperture (100) according to any one of claims 1 to 18, wherein the variable aperture (100) is fixedly connected to the lens assembly (200) and is located on the light incident side of the lens assembly (200).

20. An electronic device (1), characterized in that: It comprises a shell (2000) and a camera module (1000) as claimed in claim 19, wherein the camera module (1000) is arranged in the shell (2000).

Images