Variable aperture, camera module and electronic equipment

Abstract

A variable aperture (60), an image pickup module (100), and an electronic device (1). The iris ring (60) comprises a fixed seat (630), a rotating support (63), a plurality of blades (65) and a first cover body (732). The rotating support (63) is located on the inner side of the fixed seat (630) and rotatably connected to the fixed seat (630), and the rotating support (63) defines a space (610). The blades (65) jointly define a light hole (650), the light hole (650) is communicated with the space (610), and each blade (65) is rotationally connected to the fixed seat (630) and slidably connected to the rotating support (63). The first cover body (732) is fixed to the fixing base (630) and located on the side, away from the fixing base (630), of the blade (65), and the first cover body (732) is made of a metal material. In this way, the structural strength of the first cover body (732) is large. The blades (65) are not easily damaged due to deformation of the first cover body (732), and the variable aperture (60) is long in service life and good in reliability.

Description

[0001] This application is a divisional application. The application number of the original application is 202280007441.7, and the original application date is December 6, 2022. The entire contents of the original application are incorporated into this application by reference.

[0002] This application claims the priority of the Chinese patent application filed with the China Patent Office on January 30, 2022, with application number 202210114548.3 and application name “Variable aperture, camera module and electronic device”, the entire contents of which are incorporated by reference in this application. Technical Field

[0003] 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

[0004] In recent years, major manufacturers have put forward more stringent requirements on the imaging quality of camera modules. The imaging quality of the camera module is improved by adjusting the size of the aperture hole of the variable aperture to adjust the light flux entering the variable aperture. The traditional variable aperture includes a fixed component, a rotating component, multiple blades and an upper cover. When the rotating component rotates relative to the fixed component, the rotating component pushes the multiple blades to open and close. The upper cover is fixed to the fixed component, and the upper cover cooperates with the fixed component to prevent the blades from falling out. However, since the traditional upper cover is made of plastic, the upper cover is easy to deform and squeeze the blades, causing deformation and damage of the blades. The life of the variable aperture is short. Summary of the invention

[0005] The present application provides a variable aperture, a camera module and an electronic device with a long service life.

[0006] In a first aspect, an embodiment of the present application provides a variable aperture (also referred to as a variable aperture motor). The variable aperture includes a fixed seat, a rotating bracket, a plurality of blades, and a first cover. The rotating bracket is located on the inner side of the fixed seat and is rotatably connected to the fixed seat, and the rotating bracket encloses a space. The plurality of blades together enclose a light-transmitting hole, and the light-transmitting holes of the plurality of blades are connected to the space, and each of the blades is rotatably connected to the fixed seat and slidably connected to the rotating bracket.

[0007] The first cover is fixed to the fixing seat and is located at a side of the blade away from the fixing seat. The first cover is made of metal material.

[0008] It is understandable that by setting the material of the first cover body to be a metal material, the structural strength and impact resistance of the first cover body are increased. In this way, when the variable aperture is dropped and impacted, the first cover body is not easily damaged or deformed, and the reliability of the first cover body is better. In addition, the first cover body is not easy to squeeze the blades due to damage or deformation, and the blades are not easy to be damaged or deformed, and the reliability of the blades is better. The service life of the variable aperture is longer.

[0009] In a possible implementation, the first cover is an aluminum sheet or a steel sheet. It is understandable that the first cover is made of an aluminum sheet or a steel sheet. The investment cost of the first cover is relatively low.

[0010] In a possible implementation, the first cover body is provided with a fixing hole, the fixing seat is provided with a fixing block, and the fixing block is heat-riveted into the fixing hole.

[0011] It is understandable that by heat-riveting the fixing block into the fixing hole, the connection firmness between the first cover and the fixing seat is increased, thereby preventing the first cover from falling off the fixing seat. In this way, since the first cover and the fixing seat can restrict the blades by cooperating with each other, the blades are not easy to fall off from the fixing seat. The life of the variable aperture is longer. The reliability of the variable aperture is better.

[0012] In a possible implementation, the fixing seat has a plurality of first protrusions arranged at intervals, and the rotating bracket has a plurality of second protrusions arranged at intervals. Each of the blades is provided with a rotating hole and a guide hole arranged at intervals, and the plurality of first protrusions are rotatably connected to the rotating holes of the plurality of blades in a one-to-one correspondence, and the plurality of second protrusions are slidably connected to the guide holes of the plurality of blades in a one-to-one correspondence.

[0013] The first cover body is provided with a plurality of first avoidance spaces and a plurality of second avoidance spaces which are arranged at intervals. The plurality of first protrusions are arranged in the first avoidance spaces in a one-to-one correspondence, and the plurality of second protrusions are arranged in the second avoidance spaces in a one-to-one correspondence.

[0014] In a possible implementation, the variable aperture further includes a second cover body, which fixes the first cover body and is located on a side of the first cover body away from the blades, and the second cover body covers the first avoidance space and the second avoidance space.

[0015] It can be understood that when the second cover body can cover the first avoidance space and the second avoidance space, the second cover body can cover the first protrusion, the second protrusion, the rotating hole and the guide hole, so that on the one hand, during the assembly process of the camera module, it can prevent hair and foreign matter from falling into the rotating hole and the guide hole of the blade during the manufacturing process of the camera module, thereby avoiding affecting the movement of the first protrusion in the rotating hole and the movement of the second protrusion in the guide hole, and on the other hand, it can improve the appearance refinement of the variable aperture.

[0016] In a possible implementation, the top surface of the second cover, the outer peripheral side surface of the second cover, and the inner peripheral side surface of the second cover are all provided with a coating, so that the coating can improve the appearance refinement of the variable aperture.

[0017] In a possible implementation, the plating layer may be black or matte black, thereby hiding the components at the bottom of the second cover body.

[0018] In a possible implementation, an anti-reflection film is provided on the surface of the coating, which can largely eliminate the problem of light flare, thereby greatly improving the appearance refinement of the variable aperture.

[0019] In a possible implementation, the variable aperture includes a flexible circuit board, a first magnet, and a first coil.

[0020] The flexible circuit board surrounds the outer peripheral side of the fixing base and is fixed to the outer peripheral side of the fixing base, the first coil is fixed to the inner peripheral side of the flexible circuit board and is electrically connected to the flexible circuit board, the first magnet is fixed to the outer peripheral side of the rotating bracket, the first coil faces the first magnet, and the first magnet is used to drive the rotating bracket to rotate relative to the fixing base in cooperation with the first coil, each of the blades slides relative to the rotating bracket and rotates relative to the fixing base, and the aperture of the light-transmitting holes of the multiple blades changes.

[0021] In this implementation, the first magnet is fixedly connected to the outer peripheral side of the rotating bracket, and the first coil is fixedly connected to the fixed seat, so that when the first coil is energized, the first magnet is subjected to a force, and the first magnet can drive the rotating bracket to rotate relative to the fixed seat. It can be understood that, on the one hand, the structure of the driving device composed of the first magnet and the first coil does not need to set a wire between the rotating bracket and the fixed seat, and the structure of the driving device composed of the first magnet and the first coil is relatively simple and neat. On the other hand, the first magnet and the first coil do not need to move to pull the rotating bracket to rotate. In this way, the variable aperture does not need to provide additional space for the first magnet and the first coil to move. The first magnet and the first coil occupy a small space, which is conducive to the miniaturization of the variable aperture.

[0022] In this embodiment, by fixing the first magnet to the outer peripheral side of the rotating bracket, the first coil is arranged facing the first magnet, on the one hand, the first magnet and the first coil are prevented from stacking in the thickness direction of the camera module, and on the other hand, the first magnet, the first coil, the fixing seat and the rotating bracket can be arranged more compactly. In addition, compared with the solution of laying the first coil flat on the fixing seat, this embodiment fixes the first coil upright to the fixing seat, on the one hand, the space of the rotating bracket in the Z-axis direction can be utilized, and on the other hand, the area occupied by the first coil in the XY plane can be smaller.

[0023] In one possible implementation, the flexible circuit board includes a main body and a first reinforcement portion, the first reinforcement portion is fixed to a surface of a first section of the main body, and the first coil is fixed to the first section and arranged opposite to the first reinforcement portion.

[0024] At least part of the first reinforcement part is made of magnetic conductive material, and the first reinforcement part generates suction force with the first magnet. In this way, the rotating bracket can be close to one side of the fixed seat under the suction force, so that the rotating bracket and the fixed seat can be stably connected. When the rotating bracket rotates relative to the fixed seat, the rotating bracket is not prone to tilting or shaking due to external vibrations. The rotating bracket can also reduce the interference of poor posture of the user, ensuring that the rotating bracket has better connection stability.

[0025] In a possible implementation, the fixing seat includes a base and a fixing bracket, and the fixing bracket is fixed to the top of the base. The base and the fixing bracket surround a first through hole, and the first coil faces the first magnet through the first through hole.

[0026] In one possible implementation, the base is provided with a first glue groove, the fixed bracket is provided with a second glue groove, the first glue groove and the second glue groove are assembled into a first glue storage groove, the first glue storage groove is provided with a glue layer, and the glue layer is also connected to the flexible circuit board.

[0027] It is understandable that when the flexible circuit board is fixed to the fixing seat, the flexible circuit board can cover the first glue storage tank. By arranging a glue layer in the first glue storage tank, the glue layer connects the flexible circuit board and the tank wall of the first glue storage tank, thereby further improving the connection firmness between the flexible circuit board and the fixing seat. In addition, since the first glue storage tank is composed of the first glue tank of the base and the second glue tank of the fixing bracket. In this way, the glue layer can also enhance the connection firmness between the base and the fixing bracket. The glue layer of this embodiment has the effect of "one thing for multiple uses".

[0028] In a possible implementation, the base is provided with a first stopper, the first stopper is connected to an inner surface of the base, and the first stopper is in contact with the bottom of the rotating bracket.

[0029] It is understandable that when the rotating bracket is located on the inner side of the fixed seat, the first stopper can limit the movement of the rotating bracket along the negative direction of the Z axis. In addition, the first cover can limit the movement of the rotating bracket along the positive direction of the Z axis. In this way, through the cooperation between the second stopper and the upper cover, the movement of the rotating bracket can be limited to reduce the shaking amount of the rotating bracket, and then when the variable aperture is hit, the impact of the gap change between the blades and the upper cover after the impact can be reduced.

[0030] In one possible implementation, the base and the fixed bracket are both made of an integral structure formed by metal parts and plastic parts. In this way, compared with a base with a plastic structure, the base of this embodiment has better structural strength. When the variable aperture is dropped and hit, the base is not easily damaged or deformed, and the reliability of the base is better. In addition, compared with a fixed bracket with a plastic structure, the fixed bracket of this embodiment has better structural strength. When the variable aperture is dropped and hit, the fixed bracket is not easily damaged or deformed, and the reliability of the fixed bracket is better.

[0031] In one possible implementation, when the variable aperture is in an initial state, the aperture of the aperture hole is minimum, the minimum distance between the outer edge of the blade and the step surface of the fixing seat is d1, wherein d1≤50 microns, and the step surface faces the aperture hole.

[0032] In one possible implementation, d1 ≤ 30 microns.

[0033] In a possible implementation, the width of the overlapping area between two adjacent blades is d2, and the width of the overlapping area is the vertical distance between the inner edge of the first blade and the outer edge of the second blade, wherein d2≥0.27 mm.

[0034] In a possible implementation, the distance between the end of the inner edge of the blade close to the aperture hole and the edge of the aperture hole is d3, where d3≥0.1 mm. In this way, the aperture hole is not likely to have a "Hot Wheels" shape.

[0035] In a possible implementation, the variable aperture further includes a first gasket, the first gasket is fixedly connected to the rotating bracket and is located on a side of the plurality of blades facing the rotating bracket, an inner edge of the first gasket surrounds a light-transmitting hole, and the light-transmitting hole of the first gasket communicates with the light-transmitting holes of the plurality of blades and the space of the rotating bracket; The variable aperture includes a starting state, an intermediate state and an end state; When the variable aperture is in the initial state or the intermediate state, the maximum aperture of the light-transmitting holes of the plurality of blades is smaller than the aperture of the light-transmitting hole of the first gasket; When the variable aperture is in the terminal state, the minimum aperture of the light-transmitting holes of the plurality of blades is greater than or equal to the aperture of the light-transmitting hole of the first gasket.

[0036] In a possible implementation, when the variable aperture is in the end state, the distance between the second end wall of the guide hole of the blade and the inner edge of the first gasket is d4, where d4≥0.2 mm. In this way, light leakage at the guide hole can be avoided.

[0037] In a possible implementation, when the variable aperture is in the end state, the distance between the intersection of two adjacent blades and the inner edge of the first gasket is d5, where d5≥0.3 mm. In this way, light leakage at the intersection of two adjacent blades can be avoided.

[0038] In a possible implementation, the sensitivity of the guide hole is sensitivity. The rotation angle of the rotating bracket is dθ. When the rotating bracket rotates relative to the fixed bracket, the aperture of the light-transmitting holes of the plurality of blades changes by dD.

[0039] in, , 0.6.

[0040] In this way, the guide hole can overcome the tolerance problem during the preparation of the guide hole, thereby ensuring a better fit between the guide hole and the second protrusion.

[0041] In a possible implementation, the variable aperture further includes a second gasket, which is fixed to the upper cover and located between the blade and the upper cover. In this way, the second gasket can separate the blade from the upper cover, thereby preventing the upper cover from scratching the blade.

[0042] In a possible implementation, the second gasket and the upper cover are an integral structure.

[0043] In a second aspect, an embodiment of the present application provides a camera module. The camera module includes a lens assembly and a variable aperture as described above. The variable aperture is fixedly connected to the lens assembly and is located on the light incident side of the lens assembly. It is understandable that when the variable aperture is applied to the camera module, the camera module has a longer life and better reliability.

[0044] In one possible implementation, the lens assembly includes a motor and a lens. The lens is disposed on the motor. The motor is used to drive the lens to move along the optical axis direction of the camera module. The variable aperture is fixedly connected to the lens and is located on the light incident side of the lens.

[0045] In a third aspect, an embodiment of the present application provides an electronic device. The electronic device includes a housing and a camera module as described above, wherein the camera module is disposed in the housing. It is understandable that when the camera module is applied to the electronic device, the electronic device has a longer life and better reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to illustrate the technical solution of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be described below.

[0047] Figure 1 It is a structural schematic diagram of an implementation mode of an electronic device provided in an embodiment of the present application; Figure 2 yes Figure 1 A partial cross-sectional schematic diagram of the electronic device shown at line AA; Figure 3 yes Figure 1 A partially exploded schematic diagram of a camera module of the electronic device shown; Figure 4 yes Figure 3 A partially exploded schematic diagram of a variable aperture of a camera module shown; Figure 5 yes Figure 4 The schematic diagram of the structure of the base shown in different angles; Figure 6 yes Figure 4 The structural schematic diagram of the fixed bracket shown in FIG. 1 at different angles; Figure 7 yes Figure 4 The illustrated schematic diagram of the assembly of the base and the fixing bracket at one angle; Figure 8 yes Figure 4 The schematic diagram of the assembly of the base and the fixing bracket shown in another angle; Fig. 9 yes Figure 4 The structural schematic diagram of the rotating bracket shown in FIG. 1 at different angles; Fig.10 yes Figure 3 The schematic diagram of the structure of some variable apertures at different angles is shown; Fig.11 yes Figure 3 A partial cross-sectional schematic diagram of the variable aperture is shown; Fig.12 yes Figure 4 The assembly diagram of the base, the fixing bracket and the ball shown; Fig.13 yes Figure 4 The schematic diagram of the assembly of the rotating bracket and the ball shown; Fig.14 yes Figure 4 The schematic diagram of the assembly of the flexible circuit board, the first coil, the second coil and the driving chip at a certain angle is shown; Fig.15 yes Figure 4 The schematic diagram of the assembly of the flexible circuit board, the first coil, the second coil and the driving chip shown in another angle; Fig.16 yes Figure 3 A partial structural schematic diagram of a variable aperture is shown; Fig.17 yes Fig.16 A schematic cross-sectional view of a portion of the variable aperture at line BB is shown; Fig.18 yes Fig.17 A structural schematic diagram of an implementation method in which the second coil and the second magnet drive the rotating bracket to rotate; Fig.19 yes Figure 3 A partial structural schematic diagram of a variable aperture is shown; Fig. 20 yes Figure 3 A partial structural schematic diagram of a variable aperture is shown; Fig.21 yes Figure 4 The schematic diagram of the structure of multiple blades at different angles shown; Fig. 22 yes Figure 3 A partial structural schematic diagram of a variable aperture is shown; Fig.23A yes Fig. 22 A schematic diagram of the structure of a part of the variable aperture at another angle is shown; Fig. 23B yes Fig.23A An enlarged schematic diagram of a portion of the variable aperture at position N is shown; Fig.24 yes Figure 4 The schematic diagram of the structure of the two blades shown is when the variable aperture is in the middle state; Fig.25 yes Figure 4 A diagram showing the positional relationship between the plurality of blades and the first gasket; Fig.26 yes Figure 4 The schematic diagram of the structure of the upper cover at different angles shown; Fig. 27 yes Fig.23A The schematic diagram of the structure of the variable aperture at another angle is shown; Fig.28 yes Fig.26 A cross-sectional view of another embodiment of the upper cover at line CC shown; Fig.29yes Figure 4 The upper cover shown is an exploded schematic diagram of another embodiment; Fig.30 yes Figure 3 A partially exploded schematic diagram of another embodiment of a variable aperture is shown; Fig.31 yes Figure 3 An exploded schematic diagram of another embodiment of a variable aperture is shown; Fig.32 yes Fig.31 The schematic diagram of the assembly of the base, the fixing bracket and the first matching member shown; Fig.33 yes Fig.31 A schematic diagram of the assembly of a partial structure of the variable aperture is shown; Fig.34 yes Fig.31 The structure schematic diagram of the rotating bracket body and the second matching member shown at another angle; Fig.35 yes Fig.31 A partial cross-sectional schematic diagram of the variable aperture in one direction is shown; Fig.36 yes Fig.31 The partial cross-sectional schematic diagram of the variable aperture shown in another direction. DETAILED DESCRIPTION

[0048] For ease of understanding, the English abbreviations and related technical terms involved in the embodiments of the present application are explained and described below.

[0049] Taking the lens as the boundary, the side where the object is is the object side; With the lens as the boundary, the side where the image of the object is located is the image side; The optical axis is an axis that passes vertically through the center of the lens. The optical axis of the lens is the axis that passes through the center of each lens of the lens. When light parallel to the optical axis enters a convex lens, the ideal convex lens should have all the light converge at one point behind the lens. This point where all the light converges is the focus.

[0050] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application.

[0051] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the term "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 relative position relationship after connection remains unchanged. "Rotational connection" means that the two are connected to each other and can rotate relative to each other after connection. "Sliding connection" means that the two are connected to each other and can slide relative to each other after connection. The directional terms mentioned in the embodiments of the present application, such as "top", "bottom", "inside", "outside", "left", "right", etc., are only reference 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.

[0052] In addition, in the embodiments of the present application, the mathematical concepts mentioned are symmetry, equality, parallelism, verticality, etc. These limitations are all for the current state of the art, rather than being absolutely strict definitions in a mathematical sense, and allow a small amount of deviation, approximation to symmetry, approximation to equality, approximation to parallelism, approximation to verticality, etc. are all possible. For example, A and B are parallel, which means that A and B are parallel or approximately parallel, and the angle between A and B can be between 0 and 10 degrees. A and B are perpendicular, which means that A and B are perpendicular or approximately perpendicular, and the angle between A and B can be between 80 and 100 degrees.

[0053] See also Figure 1 , Figure 1 1 is a schematic diagram of an implementation of an electronic device 1 provided in an embodiment of the present application. The electronic device 1 may be a device with a camera function, such as a mobile phone, a tablet personal computer, a laptop computer, a personal digital assistant (PDA), a camera, a personal computer, a notebook computer, a vehicle-mounted device, a wearable device, an augmented reality (AR) glasses, an AR helmet, a virtual reality (VR) glasses or a VR helmet. Figure 1 The electronic device 1 of the illustrated embodiment is described by taking a mobile phone as an example.

[0054] See also Figure 1 and Figure 2 , Figure 2 yes Figure 1The electronic device 1 is a partial cross-sectional schematic diagram at line AA. The electronic device 1 includes a camera module 100, a housing 200 and a screen 300. It should be noted that: Figure 1 , Figure 2 The following figures and the related drawings only schematically show some components of the electronic device 1, and the actual shapes, sizes, positions and structures of these components are not subject to Figure 1 , Figure 2 In addition, since the camera module 100 is the internal structure of the electronic device 1, Figure 1 The camera module 100 is schematically shown by a dotted line. For ease of description, the width direction of the electronic device 1000 is defined as the X axis. The length direction of the electronic device 1000 is defined as the Y axis. The thickness direction of the electronic device 1000 is defined as the Z axis. It is understood that the coordinate system setting of the electronic device 1000 can be flexibly set according to specific actual needs.

[0055] In other embodiments, when the electronic device 1 is a device of other forms, the electronic device 1 may not include the screen 300 .

[0056] Exemplarily, the housing 200 includes a host frame 201 and a back cover 202. The back cover 202 is fixedly connected to one side of the host frame 201. The screen 300 is fixed to the side of the host frame 201 away from the back cover 202. The screen 300, the host frame 201 and the back cover 202 can together enclose the interior of the electronic device 1. The interior of the electronic device 1 can be used to place components of the electronic device 1, such as a battery, a receiver or a microphone. Among them, the screen 300 can be used to display images, etc. The screen 300 can be a flat screen or a curved screen.

[0057] In one embodiment, the camera module 100 may be disposed inside the electronic device 1. The camera module 100 may be used to collect ambient light outside the electronic device 1. It is understood that the camera module 100 may be a rear camera module or a front camera module, etc. In addition, the camera module 100 may 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 may be any direction on the XY plane). Figure 2 It shows that the camera module 100 is both a rear camera module and a vertical camera module.

[0058] See also Figure 3 , Figure 3 yes Figure 1A partially exploded schematic diagram of the camera module 100 of the electronic device 1 shown. In one embodiment, the camera module 100 includes a module circuit board 10, a photosensitive chip 20, a bracket 30, a filter 40, a lens assembly 50, and a variable aperture 60 (also called a variable aperture motor). Among them, the photosensitive chip 20 can also be called an image sensor, or can also be called a photosensitive element. The photosensitive chip 20 can be used to collect ambient light and convert the image information carried by the ambient light into an electrical signal. It should be noted that the optical axis of the camera module 100 includes the optical axis of the variable aperture 60. In this embodiment, the optical axis direction of the camera module 100 and the optical axis direction of the variable aperture 60 are both in the Z-axis direction.

[0059] See also Figure 2 and Figure 3 In one embodiment, the module circuit board 10 can be fixed to the side of the screen 300 facing the back cover 202. The photosensitive chip 20 is fixedly connected to the module circuit board 10 and electrically connected to the module circuit board 10.

[0060] In one embodiment, the bracket 30 can be fixedly connected to the side of the module circuit board 10 away from the screen 300. The bracket 30 and the photosensitive chip 20 are located on the same side of the module circuit board 10. Exemplarily, the bracket 30 can be fixed to the module circuit board 10 by glue or tape.

[0061] In one embodiment, the bracket 30 may be provided with a light-transmitting hole 31. The light-transmitting hole 31 of the bracket 30 passes through two back-to-back surfaces of the bracket 30. The optical filter 40 is fixed to the bracket 30, and the optical filter 40 is located in the light-transmitting hole 31 of the bracket 30. The optical filter 40 is arranged opposite to the photosensitive chip 20. The optical filter 40 can be used to filter stray light of ambient light, thereby ensuring that the image captured by the camera module 100 has better clarity. The optical filter 40 can be, but is not limited to, a blue glass filter. For example, the optical filter 40 can also be a reflective infrared filter, or a double-pass filter (a double-pass filter can allow visible light and infrared light in ambient light to pass through at the same time, or allow visible light and other specific wavelengths of light (such as ultraviolet light) in ambient light to pass through at the same time, or allow infrared light and other specific wavelengths of light (such as ultraviolet light) to pass through at the same time.).

[0062] See also Figure 3The lens assembly 50 can be a fixed-focus lens, an auto focus (AF) lens, a zoom lens, etc. The lens assembly 50 of this embodiment is explained by taking the AF lens as an example. The lens assembly 50 includes a motor 51 and a lens 52. The lens 52 is arranged on the motor 51. The motor 51 is used to drive the lens 52 to move along the optical axis direction (that is, the Z-axis direction) of the camera module 100. The motor 51 can be a voice coil motor or a shape memory alloy (SMA) motor. The specific structure of the motor 51 is not limited in this application.

[0063] In one embodiment, the motor 51 can be fixedly connected to the bracket 30. The lens 52 is located on the side of the filter 40 away from the photosensitive chip 20. In this way, the ambient light can be transmitted to the photosensitive chip 20 through the lens 52 and the filter 40.

[0064] See also Figure 2 and Figure 3 In one embodiment, the variable aperture 60 is located at the light incident side of the lens 52 of the lens assembly 50 and is fixedly connected to the lens 52 of the lens assembly 50. The variable aperture 60 can be used to increase or decrease the light flux entering the lens 52 of the lens assembly 50. Exemplarily, when the electronic device 1 is photographed under dark light conditions, the variable aperture 60 can increase the light flux entering the lens assembly 50. When the electronic device 1 is photographed under bright light conditions, the variable aperture 60 can reduce the light flux entering the lens assembly 50.

[0065] It is understandable that when the size of the aperture hole of the variable aperture 60 and the position of the aperture hole of the variable aperture 60 relative to the lens 52 change, the size of the field of view angle of the lens 52 will also change. In this embodiment, by fixing the variable aperture 60 on the lens 52, when the motor 51 drives the lens 52 to move along the Z-axis direction, the variable aperture 60 can also move along the Z-axis direction, that is, during the movement of the lens 52 along the Z-axis direction, the position of the variable aperture 60 relative to the lens 52 does not change. In this way, without considering other factors that affect the size of the field of view angle of the lens 52, when the position of the aperture hole of the variable aperture 60 relative to the lens 52 does not change, the field of view angle of the lens 52 does not change.

[0066] In other embodiments, the variable aperture 60 may be fixedly connected to other components of the lens assembly 50 .

[0067] In other embodiments, when the lens assembly 50 is a fixed-focus lens, the lens assembly 50 no longer includes the motor 51. In this case, the variable aperture 60 can be directly fixedly connected to the light incident side of the fixed-focus lens.

[0068] In this embodiment, the variable aperture 60 includes a starting state, an intermediate state, and a terminal state. The intermediate state is any state between the starting state and the terminal state. When the variable aperture 60 is in the starting state, the aperture hole of the variable aperture 60 is the smallest, and the light flux entering the lens assembly 50 is the least. When the variable aperture 60 is in the terminal state, the aperture hole of the variable aperture 60 is the largest, and the light flux entering the lens assembly 50 is the largest. In the following, the structure of the variable aperture 60 in the starting state is described as an example.

[0069] See also Figure 4 , Figure 4 yes Figure 3 A partially exploded schematic diagram of the variable aperture 60 of the camera module 100 shown. The variable aperture 60 includes a base 61, a fixed bracket 62, a rotating bracket 63, a plurality of balls 64, a plurality of blades 65, a first gasket 66, a first magnet 67a, a second magnet 67b, a first coil 68a, a second coil 68b, a flexible circuit board 69, a drive chip 71 and an upper cover 73. It should be noted that in the present embodiment, the number of balls 64 is four, and the shape and size of each ball 64 are the same, so each ball 64 uses the same number. In other embodiments, the number of balls 64 is not limited, and the shape and size of each ball 64 may also be different. In other embodiments, the variable aperture 60 may not include a plurality of balls 64 and a first gasket 66.

[0070] See also Figure 5 , and combined with Figure 4 As shown, Figure 5 yes Figure 4 The schematic diagram of the structure of the base 61 at different angles is shown. In one embodiment, the base 61 may include a plastic part and a metal part (e.g., a steel sheet). The metal part may be embedded in the plastic part. Exemplarily, the base 61 may be formed by an insert molding process. For example, a metal sheet such as a steel sheet is placed in a mold for injection molding. In this way, compared with the base 61 of the plastic structure, the base 61 of this embodiment has better structural strength. When the variable aperture 60 falls and hits, the base 61 is not easily damaged or deformed, and the reliability of the base 61 is better.

[0071] In one embodiment, the base 61 includes a bottom wall 611 and a side wall 612. The side wall 612 of the base 61 is fixedly connected to the bottom wall 611 of the base 61. Both the side wall 612 of the base 61 and the bottom wall 611 of the base 61 may be annular.

[0072] In one embodiment, the side wall 612 of the base 61 may also be provided with a plurality of first recessed areas 613a arranged at intervals. Each first recessed area 613a forms an opening on the inner surface of the side wall 612 of the base 61. In this embodiment, the number of the first recessed areas 613a is the same as the number of the balls 64, that is, the number of the first recessed areas 613a is four. The four first recessed areas 613a are arranged in a circular pattern in sequence. Among them, the first first recessed area 613a and the third first recessed area 613a can be arranged oppositely, and the line connecting the two can pass through the central axis of the base 61. The second first recessed area 613a and the fourth first recessed area 613a can be arranged oppositely, and the line connecting the two can pass through the central axis of the base 61. In other embodiments, the number and position of the first recessed areas 613a are not specifically limited.

[0073] In one embodiment, the side wall 612 of the base 61 may also be provided with a plurality of first reinforcement blocks 613b arranged at intervals. The plurality of first reinforcement blocks 613b are arranged in one-to-one correspondence with the plurality of first recessed areas 613a. The first reinforcement block 613b is located at the periphery of the first recessed area 613a. The first reinforcement block 613b may be connected to the bottom wall of the first recessed area 613a. It is understandable that when the side wall 612 of the base 61 is provided with the first recessed area 613a, the strength of the side wall 612 of the base 61 at the first recessed area 613a is low and is easy to break. By providing the first reinforcement block 613b, the strength of the side wall 612 of the base 61 at the first recessed area 613a can be enhanced in this embodiment to prevent the base 61 from breaking.

[0074] In one embodiment, the side wall 612 of the base 61 further includes a first notch 614 and a second notch 615 which are spaced apart. The first notch 614 and the second notch 615 can be arranged opposite to each other. The first notch 614 and the second notch 615 can both connect the inner space of the base 61 to the outer space of the base 61.

[0075] In one embodiment, the side wall 612 of the base 61 is provided with a plurality of first stoppers 618a arranged at intervals. The plurality of first stoppers 618a are all connected to the inner surface of the side wall 612 of the base 61. The number of the first stoppers 618a is not limited to Figure 5 Six are shown. Exemplarily, the top surface of each first stopper 618a is in the same plane. The top surface of the first stopper 618a is the surface of the first stopper 618a away from the bottom wall 611 of the base 61.

[0076] In one embodiment, the side wall 612 of the base 61 is provided with a plurality of first protrusions 618b arranged at intervals. The plurality of first protrusions 618b are connected to the top surface of the side wall 612 of the base 61. The number of the first protrusions 618b is not limited to Figure 5As shown in FIG. 3. Exemplarily, each first protrusion 618b may be provided with a glue groove.

[0077] In one embodiment, the side wall 612 of the base 61 is provided with a plurality of first adhesive grooves 619 a arranged at intervals. The opening of each first adhesive groove 619 a is located on the outer surface of the side wall 612 of the base 61 .

[0078] In one embodiment, the side wall 612 of the base 61 is provided with a plurality of first positioning blocks 619b arranged at intervals. The plurality of first positioning blocks 619b are connected to the outer surface of the side wall 612 of the base 61. The number of the first positioning blocks 619b is not limited to Figure 5 The first positioning block 619b may be in the shape of a column.

[0079] See also Figure 6 , and combined with Figure 4 As shown, Figure 6 yes Figure 4 The structure schematic diagram of the fixed bracket 62 shown at different angles. In one embodiment, the material of the fixed bracket 62 may include a plastic part and a metal part (for example, a steel sheet). The metal part may be embedded in the plastic part. Exemplarily, the fixed bracket 62 may be formed by an insert molding process. For example, a metal material such as a steel sheet is placed in a mold for injection molding. In this way, compared with a fixed bracket with a plastic structure, the fixed bracket 62 of this embodiment has better structural strength. When the variable aperture 60 falls and hits, the fixed bracket 62 is not easily damaged or deformed, and the reliability of the fixed bracket 62 is better.

[0080] In one embodiment, the fixing bracket 62 may be annular. The fixing bracket 62 includes an outer ring portion 620a and an inner ring portion 620b. The inner ring portion 620b is connected to the inner surface of the outer ring portion 620a. Exemplarily, the top surface of the outer ring portion 620a and the top surface of the inner ring portion 620b may form a step shape. In other words, in the Z-axis direction, the height of the top surface of the outer ring portion 620a is greater than the height of the top surface of the inner ring portion 620b.

[0081] In one embodiment, the fixing bracket 62 further includes a plurality of second reinforcing blocks 620c arranged at intervals. The second reinforcing blocks 620c are connected to the inner surface of the outer ring portion 620a and the bottom surface of the inner ring portion 620b. The second reinforcing blocks 620c can enhance the connection firmness between the inner ring portion 620b and the outer ring portion 620a.

[0082] In one embodiment, the inner peripheral side surface 621a of the outer ring portion 620a faces the aperture hole 650 and is a stepped surface of the fixing bracket 62.

[0083] In one embodiment, the inner ring portion 620b of the fixing bracket 62 has a plurality of first protrusions 621 arranged at intervals. The plurality of first protrusions 621 may be arranged in a ring shape. Exemplarily, the number of the first protrusions 621 is six. A first protrusion 625a and a second protrusion 625b are arranged around the periphery of each first protrusion 621.

[0084] In one embodiment, the fixed bracket 62 is further provided with a plurality of second recessed areas 622 arranged at intervals. Each second recessed area 622 forms an opening on the inner surface of the fixed bracket 62. In this embodiment, the number of the second recessed areas 622 is the same as the number of the balls 64, that is, the number of the second recessed areas 622 is four. The four second recessed areas 622 are arranged in a ring in sequence. Among them, the first second recessed area 622 and the third second recessed area 622 can be arranged relative to each other, and the line connecting the two can pass through the central axis of the fixed bracket 62. The second second recessed area 622 and the fourth second recessed area 622 can be arranged relative to each other, and the line connecting the two can pass through the central axis of the fixed bracket 62. In other embodiments, the number and position of the second recessed areas 622 are not specifically limited.

[0085] In one embodiment, the outer ring portion 620a of the fixing bracket 62 is further provided with a third notch 623 and a fourth notch 624 which are arranged at intervals. The third notch 623 and the fourth notch 624 are arranged opposite to each other. The third notch 623 and the fourth notch 624 can both connect the inner space of the fixing bracket 62 to the outer space of the fixing bracket 62.

[0086] In one embodiment, the outer ring portion 620a of the fixing bracket 62 is provided with a plurality of second stoppers 626a arranged at intervals. The plurality of second stoppers 626a can be connected to the top surface of the outer ring portion 620a. The number of the second stoppers 626a is not limited to Figure 5 Six are shown. Exemplarily, the top surface of each second stopper 626a is in the same plane. The top surface of the second stopper 626a is the surface of the second stopper 626a away from the outer ring portion 620a of the fixing bracket 62.

[0087] In one embodiment, the outer ring portion 620a of the fixing bracket 62 is provided with a plurality of fixed blocks 626b arranged at intervals. The fixed blocks 626b can be connected to the top surface of the outer ring portion 620a. The number of the fixed blocks 626b is not limited to Figure 6 The fixing block 626b may be in the shape of a cylinder.

[0088] In one embodiment, the outer ring portion 620a of the fixing bracket 62 is provided with a plurality of first grooves 626b arranged at intervals. The openings of the plurality of first grooves 626b are located on the bottom surface of the outer ring portion 620a of the fixing bracket 62. The number of first grooves 626b is not limited to Figure 6 As shown in FIG. 3. Exemplarily, the groove wall of each first groove 626b may also be provided with a glue groove.

[0089] In one embodiment, the outer ring portion 620a of the fixing bracket 62 is provided with a plurality of second adhesive grooves 627a arranged at intervals. The opening of each second adhesive groove 627a is located on the outer surface of the outer ring portion 620a of the fixing bracket 62.

[0090] In one embodiment, the outer ring portion 620a of the fixing bracket 62 is provided with a second positioning block 627b. The second positioning block 627b is connected to the outer surface of the outer ring portion 620a of the fixing bracket 62. The number of the second positioning blocks 627b is not limited to Figure 6 When there are multiple second positioning blocks 627b, the multiple second positioning blocks 627b are arranged at intervals. The shape of the second positioning block 627b can be a column.

[0091] See also Figure 7 , and combined with Figure 5 and Figure 6 As shown, Figure 7 yes Figure 4 The base 61 and the fixing bracket 62 are shown as a schematic diagram of assembly at a certain angle. In one embodiment, the outer ring portion 620a of the fixing bracket 62 is fixedly connected to the side wall 612 of the base 61. The base 61 and the fixing bracket 62 form a fixing seat 630.

[0092] In one embodiment, the connection between the fixed bracket 62 and the base 61 can be connected by mortise and tenon technology. In addition, a glue layer can be provided at the connection position between the fixed bracket 62 and the base 61 to further improve the connection firmness between the fixed bracket 62 and the base 61.

[0093] See also Figure 7 and Figure 8 , Figure 8 yes Figure 4 The schematic diagram of the assembly of the base 61 and the fixed bracket 62 shown in another angle. In one embodiment, when the fixed bracket 62 fixes the base 61, the multiple first protrusions 618b of the base 61 are inserted into the multiple first grooves 626b of the fixed bracket 62 one by one. The first protrusion 618b can be interference fit with the groove wall of the first groove 626b. It can be understood that the connection firmness between the fixed bracket 62 and the base 61 can be improved by the cooperation of the first protrusion 618b and the first groove 626b, so as to ensure that the fixed bracket 62 and the base 61 have better stability. In one embodiment, the structure of the first protrusion 618b can be made of steel sheet. In this way, the connection firmness between the fixed bracket 62 and the base 61 can be improved, and the strength between the fixed bracket 62 and the base 61 can be improved.

[0094] In one embodiment, when the fixing bracket 62 fixes the base 61, by setting a glue layer in the glue groove of the first protrusion 618b and the glue groove in the first groove 626b, the connection firmness between the fixing bracket 62 and the base 61 can be further improved, thereby further ensuring that the fixing bracket 62 and the base 61 have better stability.

[0095] In one embodiment, a plurality of first recessed areas 613 a and a plurality of second recessed areas 622 are assembled into a rotation groove 6220 in a one-to-one correspondence, that is, one first recessed area 613 a and one second recessed area 622 are assembled into one rotation groove 6220 .

[0096] In one embodiment, the first notch 614 and the third notch 623 form a first through hole 6230 , and the second notch 615 and the fourth notch 624 form a second through hole 6240 .

[0097] The first glue tanks 6270 are formed by a one-to-one correspondence between the plurality of first glue tanks 619a and the plurality of second glue tanks 627a. That is, one first glue tank 619a and one second glue tank 627a form one first glue tank 6270. The number of the first glue tanks 6270 may be multiple.

[0098] See also Fig. 9 , Fig. 9 yes Figure 4 The structure schematic diagram of the rotating bracket 63 at different angles shown. In one embodiment, the rotating bracket 63 can be annular. The rotating bracket 63 encloses a space 610. The top of the rotating bracket 63 has a plurality of second protrusions 631 arranged at intervals. The plurality of second protrusions 631 can be arranged in a ring. Exemplarily, the number of the second protrusions 631 is six. The second protrusion 631 can be a columnar structure.

[0099] For example, the rotating bracket 63 is further provided with a plurality of rolling grooves 632 arranged at intervals. The plurality of rolling grooves 632 are distributed in an annular shape. The rolling grooves 632 are in the shape of long strips. The rolling grooves 632 extend along the circumferential direction of the rotating bracket 63 (i.e., the circumferential direction, the direction surrounding the axis of the rotating bracket 63). In this embodiment, the number of the rolling grooves 632 is equal to the number of the balls 64 (see Figure 4 ), that is, the number of rolling grooves 632 is four. In other embodiments, the number of rolling grooves 632 is not limited.

[0100] Exemplarily, the rotating bracket 63 is further provided with a first mounting groove 633 and a second mounting groove 634 arranged at intervals. The first mounting groove 633 and the second mounting groove 634 are formed by the outer peripheral side surface 630a of the rotating bracket 63 being recessed toward the center of the rotating bracket 63. The first mounting groove 633 and the second mounting groove 634 are also arranged at intervals with each rolling groove 632. The outer peripheral side surface 630a of the rotating bracket 63 connects the top surface and the bottom surface of the rotating bracket 63. The outer peripheral side surface 630a of the rotating bracket 63 can be parallel to the optical axis direction of the variable aperture 60.

[0101] Exemplarily, the rotating bracket 63 is further provided with a plurality of second glue storage slots 635 arranged at intervals. The openings of the second glue storage slots 635 are located on the top surface of the rotating bracket 63. The number of the second glue storage slots 635 is not limited to Fig.10 Six indicated.

[0102] It is understandable that the rotating bracket 63 may be a symmetrical structure, a partially symmetrical structure or an asymmetrical structure. In this embodiment, the rotating bracket 63 is a symmetrical structure.

[0103] See also Fig.10 , and combined with Fig. 9 As shown, Fig.10 yes Figure 3 The schematic diagram of the structure of the part of the variable aperture 60 at different angles shown. The first magnet 67a can be fixedly connected to the first mounting groove 633 of the rotating bracket 63 by means of adhesive or the like. Exemplarily, the first magnet 67a is in an arc shape. The shape of the first magnet 67a is adapted to the shape of the first mounting groove 633. In this way, when the first magnet 67a is fixedly connected to the first mounting groove 633, the first magnet 67a can be embedded in the rotating bracket 63. On the one hand, the integrity of the structure formed by the first magnet 67a and the rotating bracket 63 is better; on the other hand, the first magnet 67a and the rotating bracket 63 have overlapping areas in all directions, and the first magnet 67a is not easy to increase the size of the variable aperture 60. In other embodiments, the first magnet 67a can be embedded in the rotating bracket 63 by injection molding.

[0104] The second magnet 67b can be fixedly connected to the second mounting groove 634 of the rotating bracket 63 by means of adhesive or the like. Exemplarily, the second magnet 67b is in an arc shape. The shape of the second magnet 67b is adapted to the shape of the second mounting groove 634. In this way, when the second magnet 67b is fixedly connected to the second mounting groove 634, the second magnet 67b can be embedded in the rotating bracket 63. On the one hand, the structure formed by the second magnet 67b and the rotating bracket 63 has better integrity; on the other hand, the second magnet 67b and the rotating bracket 63 have overlapping areas in all directions, and the second magnet 67b is not easy to increase the size of the variable aperture 60 additionally. In other embodiments, the second magnet 67b can be embedded in the rotating bracket 63 by injection molding.

[0105] Exemplarily, the first magnet 67a and the second magnet 67b are symmetrical about the center of the rotating bracket 63. In this way, when the first magnet 67a and the second magnet 67b are fixedly connected to the rotating bracket 63, the structure formed by the first magnet 67a, the second magnet 67b and the rotating bracket 63 has better symmetry. At this time, when the first magnet 67a, the second magnet 67b, the rotating bracket 63 cooperate with other components, the first magnet 67a, the second magnet 67b, the rotating bracket 63 is not easy to tilt due to unstable center of gravity.

[0106] See also Fig.11 , and combined with Figure 8 and Fig. 9 As shown, Fig.11 yes Figure 3 A partial cross-sectional schematic diagram of the variable aperture 60 is shown. In one embodiment, the rotating bracket 63 is disposed on the inner side of the base 61 and the inner side of the fixed bracket 62, that is, located on the inner side of the fixed seat 630. It can be understood that the rotating bracket 63 is located on the inner side of the fixed seat 630, including that the projection of the rotating bracket 63 on the reference plane and the projection of the fixed seat 630 on the reference plane at least partially overlap. The reference plane is parallel to the optical axis direction of the variable aperture 60, that is, the Z-axis direction.

[0107] In addition, the rotating bracket 63 is rotatably connected to the base 61 and the fixed bracket 62, that is, the rotating bracket 63 is rotatably connected to the fixed seat 630. A plurality of rotating grooves 6220 and a plurality of rolling grooves 632 are arranged one by one and form an activity space, that is, one rotating groove 6220 and one rolling groove 632 are arranged opposite to each other and form an activity space. Part of the ball 64 is arranged in the rotating groove 6220, and the other part of the ball 64 is located in the rolling groove 632.

[0108] See also Fig.12 , and combined with Fig.11 As shown, Fig.12 yes Figure 4The schematic diagram of the assembly of the base 61, the fixed bracket 62 and the ball 64 is shown. By setting the length and width of the rotating groove 6220, the groove sidewall of the rotating groove 6220 can abut against the ball 64 in all directions. In this way, when the rotating bracket 63 rotates relative to the fixed seat 630, the groove sidewall of the rotating groove 6220 can restrict the ball 64 from rolling relative to the rotating groove 6220 in all directions, so that the ball 64 can rotate in the rotating groove 6220.

[0109] In one embodiment, lubricating oil is provided between the ball 64 and the rotating groove 6220. The lubricating oil can reduce the friction between the ball 64 and the rotating groove 6220.

[0110] See also Fig.13 , and combined with Fig.11 As shown, Fig.13 yes Figure 4 The schematic diagram of the assembly of the rotating bracket 63 and the ball 64 is shown. By setting the length and width of the rolling groove 632, on the one hand, the side wall of the rolling groove 632 in the width direction can abut against the ball 64. In this way, when the rotating bracket 63 rotates relative to the fixed seat 630, the side wall of the rolling groove 632 in the width direction can limit the rolling of the ball 64 along the width direction of the rolling groove 632, and on the other hand, the side wall of the rolling groove 632 in the length direction will not abut against the ball 64. In this way, when the rotating bracket 63 rotates relative to the fixed seat 630, the ball 64 can roll along the length direction of the rolling groove 632.

[0111] In one embodiment, lubricating oil may also be provided between the ball 64 and the rolling groove 632 to reduce the friction between the ball 64 and the rolling groove 632 by the lubricating oil.

[0112] Please refer again Fig.11 When the rotating bracket 63 is located inside the fixed seat 630, the rotating bracket 63 can contact the first stopper 618a of the base 61. It can be understood that the surface of the first stopper 618a away from the rotating bracket 63 can serve as the first impact surface. Figure 2 ) is applied to the camera module 100 (see Figure 2 ), when the variable aperture 60 collides with other components of the camera module 100, the bottom surface of the rotating bracket 63 is not likely to collide with other components of the camera module 100. At this time, the rotating bracket 63 and the ball 64 are not likely to be deformed due to force, thereby ensuring that the variable aperture 60 has better reliability. In other embodiments, the rotating bracket 63 can also be spaced apart from the first stopper 618a of the base 61.

[0113] See also Fig.14 and Fig.15 , Fig.14 yes Figure 4 The diagram shows an assembly diagram of the flexible circuit board 69, the first coil 68a, the second coil 68b and the driving chip 71 at a certain angle. Fig.15 yes Figure 4 The flexible circuit board 69, the first coil 68a, the second coil 68b and the driving chip 71 are shown in another assembly diagram at another angle. In one embodiment, the flexible circuit board 69 includes a main body 691, a first extension portion 692 and a second extension portion 693. The first extension portion 692 and the second extension portion 693 are connected to the main body 691 at intervals.

[0114] In one embodiment, the main body 691 is provided with a first positioning hole 696. The first positioning hole 696 is arranged near the bottom of the main body 691. The number of the first positioning holes 696 is not limited to Fig.14 and Fig.15 Two indicated.

[0115] In one embodiment, the main body 691 is provided with a second positioning hole 697. The second positioning hole 697 is arranged near the top of the main body 691. The number of the second positioning holes 697 is not limited to Fig.14 and Fig.15 The one indicated.

[0116] In one embodiment, the main body 691 may include a first section 6911 and a second section 6912 that are spaced apart. The first section 6911 and the second section 6912 may be planar.

[0117] In one embodiment, the first coil 68a is fixedly connected to the first section 6911 of the main body 691 of the flexible circuit board 69 and is located on the inner peripheral side of the main body 691. The first coil 68a is also electrically connected to the flexible circuit board 69. The second coil 68b is fixedly connected to the second section 6912 of the main body 691 of the flexible circuit board 69 and is located on the inner peripheral side of the main body 691. The second coil 68b is also electrically connected to the flexible circuit board 69. Exemplarily, by setting the first section 6911 and the second section 6912 to be planar, it is convenient to fix the first coil 68a to the main body 691 and the second coil 68b to the main body 691.

[0118] In one embodiment, the flexible circuit board 69 includes a first reinforcement portion 694. The material of the first reinforcement portion 694 can be a metal material. The first reinforcement portion 694 can be fixed to the first section 6911 of the main body 691. The first reinforcement portion 694 is located on the surface of the first section 6911 away from the first coil 68a. The first reinforcement portion 694 is arranged opposite to the first coil 68a. It can be understood that the first reinforcement portion 694 can improve the strength of the first section 6911 of the main body 691.

[0119] In one embodiment, the first reinforcing portion 694 includes two parts, one part is made of a magnetic conductive material, and the other part is made of a non-magnetic conductive material. In one embodiment, the first reinforcing portion 694 may be made of a magnetic conductive material.

[0120] In one embodiment, the flexible circuit board 69 includes a second reinforcement part 695. The material of the second reinforcement part 695 can be a metal material. The second reinforcement part 695 can be fixed to the second section 6912 of the main body 691. The second reinforcement part 695 is located on the surface of the second section 6912 away from the second coil 68b. The second reinforcement part 695 is arranged opposite to the second coil 68b. It can be understood that the second reinforcement part 695 can improve the strength of the second section 6912 of the main body 691.

[0121] In one embodiment, the second reinforcing portion 695 includes two parts. One part is made of a magnetic conductive material, and the other part is made of a non-magnetic conductive material. In one embodiment, the second reinforcing portion 695 can be made of a magnetic conductive material.

[0122] In one embodiment, the driving chip 71 can be fixedly connected to the main body 691 of the flexible circuit board 69 by welding or the like. The driving chip 71 is also electrically connected to the first coil 68a and the second coil 68b. The driving chip 71 is used to supply power to the first coil 68a and the second coil 68b. In this embodiment, the driving chip 71 is electrically connected to the flexible circuit board 69, and is electrically connected to the first coil 68a and the second coil 68b through the flexible circuit board 69.

[0123] For example, the driving chip 71 can be located on the inner peripheral side of the main body 691 of the flexible circuit board 69 and in the area surrounded by the second coil 68b. In this way, the driving chip 71 and the second coil 68b are arranged more compactly on the flexible circuit board 69, which is conducive to the miniaturization of the variable aperture 60.

[0124] In one embodiment, the variable aperture 60 further includes a heat sink (not shown). The heat sink is fixed to the second coil 68b. The driver chip 71 is located in a space surrounded by the heat sink, the second coil 68b and the second section 6912 of the main body 691. The heat sink can be used to dissipate heat from the driver chip 71 when the driver chip 71 is in operation, thereby ensuring that the driver chip 71 has better reliability.

[0125] See also Fig.16 , and combined with Fig.14 and Fig.15 As shown, Fig.16 yes Figure 3Schematic diagram of a part of the structure of the variable aperture 60 shown in FIG. In one embodiment, the main body 691 of the flexible circuit board 69 is arranged around the outer peripheral side of the fixing seat 630. The main body 691 of the flexible circuit board 69 can be fixedly connected to the outer peripheral side of the fixing seat 630 by bonding or the like. In this way, the main body 691 of the flexible circuit board 69 and the fixing seat 630 are arranged more compactly. The main body 691 of the flexible circuit board 69 occupies less space, which is conducive to the miniaturization of the variable aperture 60.

[0126] In one embodiment, when the main body 691 is fixed to the fixing seat 630, the main body 691 covers the first glue storage groove 6270 ( Figure 7 and Figure 8 Schematic diagram of the first glue storage tank 6270 at different angles). By setting a glue layer in the first glue storage tank 6270, the glue layer connects the main body 691 and the groove wall of the first glue storage tank 6270. In this way, the connection firmness between the flexible circuit board 69 and the fixing seat 630 is further improved. In addition, since the first glue storage tank 6270 is composed of the first glue groove 619a of the base 61 and the second glue groove 627a of the fixing bracket 62. In this way, the glue layer can also enhance the connection firmness between the base 61 and the fixing bracket 62. It can be understood that the glue layer of this embodiment has the effect of "one thing for multiple uses".

[0127] In one embodiment, when the main body 691 is fixed to the fixing seat 630, the first positioning block 619b of the base 61 is inserted into the first positioning hole 696 of the main body 691. When the number of the first positioning block 619b and the first positioning hole 696 is multiple, the multiple first positioning blocks 619b are inserted into the first positioning hole 696 in a one-to-one correspondence, that is, one first positioning block 619b is inserted into one first positioning hole 696. In this way, on the one hand, the connection firmness between the main body 691 and the fixing seat 630 is better. On the other hand, the cooperation of the first positioning block 619b and the first positioning hole 696 can accurately position the flexible circuit board 63. In one embodiment, by arranging a glue layer in the first positioning hole 696, the glue layer connects the first positioning block 619b and the hole wall of the first positioning hole 696, thereby further improving the connection firmness between the flexible circuit board 69 and the fixing seat 630.

[0128] In one embodiment, when the main body 691 is fixed to the fixing seat 630, the second positioning block 627b of the fixing bracket 62 can be inserted into the second positioning hole 697 of the main body 691. When there are multiple second positioning blocks 627b, multiple second positioning blocks 627b are inserted into the second positioning holes 697 one by one, that is, one second positioning block 627b is inserted into one second positioning hole 697. In this way, on the one hand, the connection firmness between the main body 691 and the fixing seat 630 is better. On the other hand, the cooperation of the second positioning block 627b and the second positioning hole 697 can accurately position the flexible circuit board. In one embodiment, by arranging a glue layer in the second positioning hole 697, the glue layer connects the second positioning block 627b and the hole wall of the second positioning hole 697, thereby further improving the connection firmness between the flexible circuit board 69 and the fixing seat 630.

[0129] In one embodiment, the first extension portion 692 and the second extension portion 693 of the flexible circuit board 69 are used to electrically connect to external devices of the variable aperture 60. For example, the first extension portion 692 and the second extension portion 693 of the flexible circuit board 69 can be electrically connected to the module circuit board 10 (see FIG. 1 ) through wiring in some components of the camera module 100 (such as a motor or a bracket of a lens assembly). Figure 3 In this way, the driving chip 71 can be electrically connected to the module circuit board 10 through the flexible circuit board 69 , that is, the module circuit board 10 can transmit electrical signals to the driving chip 71 through the flexible circuit board 69 .

[0130] See also Fig.17 , Fig.17 yes Fig.16 The cross-sectional schematic diagram of the part of the variable aperture 60 shown at the BB line. The first coil 68a can be arranged facing the first magnet 67a through the first through hole 6230. The first coil 68a is arranged opposite to the first magnet 67a. The second coil 68b can be arranged facing the second magnet 67b through the second through hole 6240. The second coil 68b is arranged opposite to the second magnet 67b. It should be understood that the first coil 68a facing the first magnet 67a can be that the plane where the first coil 68a is located is arranged face to face with the first magnet 67a. In this embodiment, the plane where the first coil 68a is located and the plane where the first magnet 67a is located are both parallel to the optical axis direction of the variable aperture 60. Among them, the plane where the first coil 68a is located can be perpendicular to the axis of the winding of the first coil 68a. The second coil 68b facing the second magnet 67b can be that the plane where the second coil 68b is located is arranged face to face with the second magnet 67b. In this embodiment, the plane where the second coil 68b is located and the plane where the second magnet 67b is located are both parallel to the optical axis direction of the variable aperture 60. The plane where the second coil 68 b is located may be perpendicular to the winding axis of the second coil 68 b.

[0131] In this embodiment, the first coil 68a is located in the first through hole 6230. The second coil 68b is located in the second through hole 6240. In this way, the first coil 68a and the second coil 68b have overlapping areas with the fixing seat 630 in all directions. At this time, the first coil 68a and the second coil 68b can use the space where the fixing seat 630 is located, and the first coil 68a and the second coil 68b will not increase the size of the variable aperture 60, which is conducive to the miniaturization of the variable aperture 60.

[0132] In other embodiments, the first coil 68a may also be located outside the first through hole 6230 . The second coil 68b may also be located outside the second through hole 6240 .

[0133] In other embodiments, the positions of the first magnet 67a and the first coil 68a may be swapped, and the positions of the second magnet 67b and the second coil 68b may also be swapped.

[0134] In this embodiment, when the driving chip 71 receives a signal, the driving chip 71 can transmit a current signal to the first coil 68a and the second coil 68b through the flexible circuit board 69. When there is a current signal in the first coil 68a, the first coil 68a and the first magnet 67a can generate a force that interacts with each other. In this way, when the first magnet 67a is subjected to a force, the first magnet 67a can drive the rotating bracket 63 to rotate relative to the base 61 and the fixed bracket 62. In addition, when the second coil 68b has a current signal, the second coil 68b and the second magnet 67b can generate a force that interacts with each other. In this way, when the second magnet 67b is subjected to a force, the second magnet 67b can drive the rotating bracket 63 to rotate relative to the fixed bracket 62 and the base 61.

[0135] It can be understood that by changing the magnetic position of the first magnet 67a (that is, the position of the south pole and the north pole of the first magnet 67a) or the direction of the current signal on the first coil 68a, the force direction of the first magnet 67a is changed, thereby changing the rotation direction of the rotating bracket 63. In addition, by changing the magnetic position of the second magnet 67b (that is, the position of the south pole and the north pole of the second magnet 67b) or the direction of the current signal on the second coil 68b, the force direction of the second magnet 67b is changed, thereby changing the rotation direction of the rotating bracket 63. In this embodiment, the direction in which the first magnet 67a drives the rotating bracket 63 to rotate relative to the fixed bracket 62 and the base 61 is the same as the direction in which the second magnet 67b drives the rotating bracket 63 to rotate relative to the fixed bracket 62 and the base 61. At this time, the first magnet 67a and the second magnet 67b can jointly drive the rotating bracket 63 to rotate relative to the fixed bracket 62 and the base 61 along the first direction a ( Fig.16The solid line with an arrow indicates this direction), or in a second direction b ( Fig.16 This direction is indicated by the dashed line with an arrow).

[0136] See also Fig.18 , Fig.18 yes Fig.17 The structure diagram of an embodiment of the second coil 68b and the second magnet 67b driving the rotating bracket 63 to rotate is shown. The direction of the current on the second coil 68b is the counterclockwise direction in the YZ plane. Fig.18 It is indicated by a solid line with an arrow. The second magnet 67b includes a south pole (S pole) and a north pole (N pole). The polarization direction of the second magnet 67b in this embodiment (that is, the direction in which the south pole of the second magnet 67b points to the north pole of the second magnet 67b, or the direction in which the north pole of the second magnet 67b points to the south pole of the second magnet 67b) can be the Y-axis direction. Exemplarily, the direction in which the south pole of the second magnet 67b faces the north pole of the second magnet 67b can be arranged parallel to the circumferential direction of the rotating bracket 63. At this time, the second magnet 67b can be subjected to an Ampere force in the negative direction of the Y axis, and the second magnet 67b can drive the rotating bracket 63 to rotate along the first direction a. It can be understood that the direction of the current on the second coil 68b can be changed (for example, the counterclockwise direction is changed to the clockwise direction), or the arrangement position of the south pole and the north pole of the second magnet 67b is changed, so that the second magnet 67b can drive the rotating bracket 63 to rotate along the second direction b.

[0137] In one embodiment, when the first magnet 67a and the second magnet 67b jointly drive the rotating bracket 63 to rotate, since the first magnet 67a and the second magnet 67b are symmetrical about the center of the rotating bracket 63, the forces exerted by the first magnet 67a and the second magnet 67b on each position of the rotating bracket 63 are relatively balanced. In this way, the rotating bracket 63 is not easily tilted due to uneven force.

[0138] Please refer again Fig.17 , and combined with Fig.18 As shown, the driving chip 71 can also be used to detect the magnetic field strength of the second magnet 67b. It can be understood that when the rotating bracket 63 rotates relative to the base 61 and the fixed bracket 62, the second magnet 67b also rotates with the rotating bracket 63 relative to the base 61 and the fixed bracket 62. At this time, the second magnet 67b is in different positions relative to the base 61 and the fixed bracket 62. The driving chip 71 can be used to detect the magnetic field strength when the second magnet 67b is in different positions. In this way, the magnetic field strength detected by the driving chip 71 can confirm the rotation angle of the rotating bracket 63 relative to the base 61 and the fixed bracket 62, thereby accurately confirming the state of the variable aperture 60, and then accurately controlling the light flux entering the variable aperture 60.

[0139] In other embodiments, the driving chip 71 may also be disposed at a position opposite to the first magnet 67a. The driving chip 71 is used to detect the magnetic field strength of the first magnet 67a at different positions.

[0140] In other embodiments, the driving chip 71 may not have the function of detecting the magnetic field strength of the second magnet 67b. The variable aperture 60 may detect the magnetic field strength when the second magnet 67b is in different positions by other means. For example, the variable aperture 60 may include a position sensor (such as a Hall sensor).

[0141] See also Fig.14 , the first reinforcement part 694 of the flexible circuit board 69 is arranged opposite to the first magnet 67a. Since the first reinforcement part 694 is made of magnetic conductive material, a magnetic force can be generated between the first reinforcement part 694 and the first magnet 67a. In this way, the rotating bracket 63 can be close to one side of the fixed seat 630 under the suction force, so that the rotating bracket 63 and the fixed seat 630 can be stably connected. When the rotating bracket 63 rotates relative to the base 61 and the fixed bracket 62, the rotating bracket 63 is not prone to tilting or shaking due to external shaking. The rotating bracket 63 can also reduce the interference of poor posture of the user and ensure that the rotating bracket 63 has better connection stability.

[0142] In other embodiments, when the first reinforcing portion 694 is not made of a magnetic conductive material, the second reinforcing portion 695 of the flexible circuit board may be made of a magnetic conductive material, and the second reinforcing portion 695 may generate a magnetic force with the second magnet 67 b.

[0143] See also Fig.19 , and combined with Fig.17 As shown, Fig.19 yes Figure 3 Schematic diagram of a partial structure of the variable aperture 60 shown. The variable aperture 100 may also include a first magnetic conductive sheet 72a and a second magnetic conductive sheet 72b. The first magnetic conductive sheet 72a and the second magnetic conductive sheet 72b may be embedded in the base 61. Exemplarily, the first magnetic conductive sheet 72a and the second magnetic conductive sheet 72b are placed in a mold and injection molded to form an integral part. Exemplarily, the first magnetic conductive sheet 72a and the second magnetic conductive sheet 72b may be embedded in the bottom wall 611 of the base 61. Exemplarily, the first magnetic conductive sheet 72a may also be fixed to the bottom surface of the bottom wall 611 of the base 61 by bonding or the like. The second magnetic conductive sheet 72b is fixedly connected to the bottom surface of the bottom wall 611 of the base 61.

[0144] Exemplarily, the first magnetic conductive sheet 72a and the second magnetic conductive sheet 72b may both be arc-shaped.

[0145] See also Fig.19 , and combined with Fig.17As shown, the first magnetic conductive sheet 72a is located around the first magnet 67a. A magnetic force can be generated between the first magnetic conductive sheet 72a and the first magnet 67a. The second magnetic conductive sheet 72b is located around the second magnet 67b. A magnetic force can be generated between the second magnetic conductive sheet 72b and the second magnet 67b. In this way, through the mutual cooperation between the first magnetic conductive sheet 72a and the first magnet 67a, and the mutual cooperation between the second magnetic conductive sheet 72b and the second magnet 67b, the connection between the rotating bracket 63 and the base 61 and the fixed bracket 62 is made more stable, that is, the stability of the rotating bracket 63 is better. In this way, when the rotating bracket 63 rotates relative to the base 61 and the fixed bracket 62, the rotating bracket 63 is not prone to tilting or shaking during the rotation process.

[0146] See also Fig. 20 , and combined with Fig.16 As shown, Fig. 20 yes Figure 3 The schematic diagram of the partial structure of the variable aperture 60 shown in FIG. In one embodiment, the first gasket 66 may be annular. The first gasket 66 has a light-transmitting hole 661. The light-transmitting hole 661 of the first gasket 66 is connected to the rotating bracket 63 ( Fig.16 The space 610 ( Fig.16 The space 610 is illustrated from different angles. The aperture of the light-transmitting hole 661 of the first gasket 66 remains unchanged. The light-transmitting hole 661 of the first gasket 66 can be used as a gear of the aperture of the variable aperture 60. In this embodiment, the light-transmitting hole 661 of the first gasket 66 can be used as the aperture when the variable aperture 60 is in the end state. The following will be described in detail in conjunction with the relevant drawings. No further description will be given here.

[0147] Exemplarily, the first gasket 66 is provided with a plurality of fixing holes 662 arranged at intervals. Exemplarily, the number of the fixing holes 662 is equal to the number of the rotating bracket 63 ( Fig.16 The second protrusion 631 ( Fig.16 The number of the rotating bracket 63, that is, the number of the fixing holes 662, is shown from different angles. In addition, the plurality of fixing holes 662 can be located around the light-transmitting hole 661 of the first gasket 66 and arranged around the light-transmitting hole 661 of the first gasket 66.

[0148] See also Fig.18 , and combined with Fig.16As shown, in one embodiment, the first gasket 66 is fixedly connected to the top of the rotating bracket 63. Exemplarily, the plurality of second protrusions 631 of the rotating bracket 63 pass through the plurality of fixing holes 662 of the first gasket 66 in a one-to-one correspondence, that is, one second protrusion 631 passes through one fixing hole 662. It can be understood that, through the cooperation between the fixing hole 662 of the first gasket 66 and the second protrusion 631 of the rotating bracket 63, the first gasket 66 is not easy to shake on the XY plane.

[0149] In one embodiment, by rotating the second glue storage tank 635 ( Fig.16 The second glue storage tank 635 is shown from different angles. The glue layer connects the rotating bracket 63 and the first gasket 66, so that the connection between the first gasket 66 and the rotating bracket 63 is more stable and more secure. At this time, the first gasket 66 is not easy to fall out of the rotating bracket 63.

[0150] In one embodiment, the central axis of the light-transmitting hole 661 of the first gasket 66 coincides with the central axis of the rotating bracket 63. The central axis of the light-transmitting hole 661 of the first gasket 66 refers to a virtual axis that passes through the center of the light-transmitting hole 661 of the first gasket 66 and is perpendicular to the plane where the first gasket 66 is located. In other embodiments, the central axis of the light-transmitting hole 661 of the first gasket 66 may not coincide with the central axis of the rotating bracket 63.

[0151] See also Fig.21 , Fig.21 yes Figure 4 The structure diagram of multiple blades 65 at different angles is shown. This embodiment takes one of the blades 65 as an example to specifically describe the structure of the blade 65. In one embodiment, the material of the blade 65 can be polyimide (PI). In other embodiments, the material of the blade 65 can also be a non-magnetic metal material. For example, aluminum sheet. In this case, the hardness of the blade 65 is relatively high.

[0152] In one embodiment, a coating may be formed on the surface of the blade 65. For example, the coating is formed on the surface of the blade 65 by evaporation or sputtering. The coating can improve the smoothness of the blade 65, so that the friction between the blades 65 is small during the opening and closing process of the blade 65.

[0153] In one embodiment, the blade 65 includes an inner edge 651 and an outer edge 652. The two ends of the inner edge 651 of the blade 65 are connected to the two ends of the outer edge 652 of the blade 65. The connection between the inner edge 651 of the blade 65 and the outer edge 652 of the blade 65 is arc-shaped. Exemplarily, the inner edge 651 of the blade 65 is arc-shaped. The outer edge 652 of the blade 65 is irregularly curved. In this embodiment, the blade 65 is roughly "dolphin"-shaped. In other embodiments, the shape of the blade 65 is not limited.

[0154] In one embodiment, the blade 65 is provided with a rotation hole 653. Exemplarily, the rotation hole 653 may be a circular hole.

[0155] In one embodiment, the blade 65 is provided with a guide hole 654. Exemplarily, the guide hole 654 may be an arc-shaped hole. The guide hole 654 includes a first end wall 6541 and a second end wall 6542 that are arranged opposite to each other. The first end wall 6541 is arranged relative to the second end wall 6542 and close to the rotating hole 653.

[0156] See also Fig. 22 , and combined with Fig. 20 and Fig.21 As shown, Fig. 22 yes Figure 3 Schematic diagram of the partial structure of the variable aperture 60 shown. This embodiment takes one of the blades 65 as an example to specifically describe the connection relationship between the blade 65 and the fixed bracket 62 and the rotating bracket 63. The blade 65 is rotatably connected to the fixed bracket 62. Exemplarily, the multiple first protrusions 621 of the fixed bracket 62 pass through the multiple rotating holes 653 of the blades 65 in a one-to-one correspondence, that is, one first protrusion 621 of the fixed bracket 62 passes through the rotating hole 653 of one blade 65. It can be understood that the hole wall of the rotating hole 653 can rotate relative to the first protrusion 621. In this way, through the cooperation between the rotating hole 653 and the first protrusion 621, the blade 65 can rotate relative to the fixed bracket 62 with the first protrusion 621 as the rotating axis.

[0157] In other embodiments, the positions of the first protrusion 621 and the rotation hole 653 can be swapped. The first protrusion 621 is disposed on the blade 65 . The rotation hole 653 is disposed on the fixing bracket 62 .

[0158] In addition, the blade 65 is also slidably connected to the rotating bracket 63 (see Fig.17 ). Exemplarily, the plurality of second protrusions 631 of the rotating bracket 63 pass through the guide holes 654 of the plurality of blades 65 in a one-to-one correspondence, that is, one second protrusion 631 of the rotating bracket 63 passes through the guide hole 654 of one blade 65. It can be understood that the second protrusion 631 can slide relative to the hole wall of the guide hole 654. In this way, through the cooperation between the guide hole 654 and the second protrusion 631, the blade 65 can be slidably connected to the rotating bracket 63.

[0159] In other embodiments, the positions of the second protrusion 631 and the guide hole 654 can be swapped. In other words, the second protrusion 631 can be disposed on the blade 65 , and the guide hole 654 can be disposed on the rotating bracket 63 .

[0160] See also Fig. 22 , and combined with Fig. 20 and Fig.21 As shown, the plurality of blades 65 are distributed in a ring shape and together surround a light-transmitting hole 650. For example, the inner edges of the plurality of blades 65 together surround the light-transmitting hole 650. The light-transmitting hole 650 of the plurality of blades 65 and the light-transmitting hole 661 of the first gasket 66 (see Fig. 20 ) are connected. The plurality of blades 65 are located on the top of the first gasket 66. It is understandable that, since each blade 65 is rotatably connected to the fixed bracket 62, and each blade 65 is slidably connected to the rotating bracket 63, when the plurality of blades 65 are unfolded or closed, the aperture of the light-transmitting holes 650 of the plurality of blades 65 can be enlarged or reduced, and the shape of the light-transmitting holes 650 of the plurality of blades 65 changes. Of course, in other embodiments, the shape of the inner edge 651 of each blade 65 can be changed so that when the plurality of blades 65 are unfolded or closed, the shape of the light-transmitting holes 650 of the plurality of blades 65 does not change.

[0161] It is understandable that the first gasket 66 of this embodiment is located between the blade 65 and the fixed bracket 62. In this way, when the blade 65 is unfolded or closed, the first gasket 66 can prevent the rotating bracket 63 from scratching the blade 65. Therefore, the first gasket 66 of this embodiment has the effect of "one thing for multiple uses".

[0162] In one embodiment, the central axis of the light-transmitting holes 650 of the plurality of blades 65 coincides with the central axis of the rotating bracket 63. The central axis of the light-transmitting holes 650 of the plurality of blades 65 refers to a virtual axis that passes through the center of the light-transmitting holes 650 of the plurality of blades 65 and is perpendicular to the plane where the plurality of blades 65 are located. In other embodiments, the central axis of the light-transmitting holes 650 of the plurality of blades 65 may not coincide with the central axis of the rotating bracket 63.

[0163] In one embodiment, when the variable aperture 60 is in the initial state, the second protrusion 631 of the rotating bracket 63 contacts the first end wall 6541 of the guide hole 654. When the variable aperture 60 is in the final state, the second protrusion 631 of the rotating bracket 63 contacts the second end wall 6542 of the guide hole 654. When the variable aperture 60 is in the middle state, the second protrusion 631 of the rotating bracket 63 is located between the first end wall 6541 and the second end wall 6542 of the guide hole 654.

[0164] In one embodiment, when the variable aperture 60 is in the initial state or the intermediate state, the maximum aperture of the light-transmitting holes 650 of the plurality of blades 65 is smaller than the aperture of the light-transmitting holes 661 of the first gasket 66. At this time, the light-transmitting holes 650 of the plurality of blades 65 constitute the aperture of the variable aperture 60, that is, the light-transmitting holes 650 of the plurality of blades 65 can control the luminous flux of the ambient light. When the variable aperture 60 is in the terminal state, the second protrusion 631 of the rotating bracket 63 is disposed close to the second end wall 6542 of the guide hole 654. The aperture of the light-transmitting holes 650 of the plurality of blades 65 continues to increase. At this time, the light-transmitting holes 661 of the first gasket 66 are exposed relative to each blade 65, and the aperture of the light-transmitting holes 650 of the plurality of blades 65 is larger than the aperture of the light-transmitting holes 661 of the first gasket 66. At this time, the light-transmitting holes 661 of the first gasket 66 constitute the aperture of the variable aperture 60.

[0165] The connection relationship between the blade 65 and the fixed bracket 62 and the rotating bracket 63 is specifically introduced above, and some size settings of the blade 65 will be specifically introduced below.

[0166] See also Fig.23A and Fig. 23B , Fig.23A yes Fig. 22 The structure diagram of the partial variable aperture 60 shown is at another angle. Fig. 23B yes Fig.23A The enlarged schematic diagram of a part of the variable aperture 60 at position N is shown. When the variable aperture 60 is in the initial state, the distance between a part of the outer edge 652 of the blade 65 and the inner surface of the outer ring portion 620a of the fixing bracket 62 is d1. d1 50 microns. For example, d1 is equal to 50 microns, 40 microns, 30 microns, 20 microns, 5 microns, etc.

[0167] In one embodiment, d1 30 microns. For example, d1 is equal to 30 microns, 20 microns, 5 microns, etc.

[0168] In other embodiments, when the variable aperture 60 is in the end state, the distance between a portion of the outer edge 652 of the blade 65 and the inner surface of the outer ring portion 620 a of the fixing bracket 62 is less than or equal to 50 micrometers.

[0169] In other embodiments, when the iris 60 is in the end state, a distance between a portion of the outer edge 652 of the blade 65 and the inner surface of the outer ring portion 620 a of the fixing bracket 62 is less than or equal to 30 micrometers.

[0170] See also Fig.24 , Fig.24 yes Figure 4 The structure diagram of the two blades 65 shown is a schematic diagram of the variable aperture 60 being in the middle state. Fig.24 The overlapping of two blades 65 is illustrated. Fig.24 The overlapping area of ​​the two blades 65 is schematically shown by the oblique lines. In addition, since a part of the inner edge 651 of the left blade 65 is located at the bottom of the right blade 65, a part of the inner edge 651 of the left blade 65 is blocked by the right blade 65. Fig.24 A portion of the inner edge 651 of the left blade 65 is schematically indicated by a dashed line.

[0171] In this embodiment, the width of the overlapping region of two adjacent blades 65 is d2. The width of the overlapping region may be the vertical distance between the inner edge 651 of the first blade 65 and the outer edge 652 of the second blade 65. Wherein, d2 ≥ 0.27 mm. For example, d2 is equal to 0.27 mm, 0.3 mm or 0.4 mm, etc.

[0172] See also Fig.25 , Fig.25 yes Figure 4 The position relationship diagram between the plurality of blades 65 and the first gasket 66 is shown. The distance between the end of the inner edge 651 of the blade 65 close to the aperture hole 650 and the edge of the aperture hole 650 is d3. Wherein, d3 ≥ 0.1 mm. For example, d3 is equal to 0.1 mm, 0.2 mm or 0.3 mm, etc. In this way, the shape of the aperture hole 650 is not likely to appear in the shape of a "Hot Wheels".

[0173] In one embodiment, Fig.25 The inner edge 661a of the first gasket 66 is schematically shown by a dotted line. The inner edge 661a of the first gasket 66 can enclose the light-transmitting hole 661 of the first gasket 66. When the variable aperture 60 is in the end state, the distance between the second end wall 6542 of the guide hole 654 of the blade 65 and the inner edge 661a of the first gasket 66 is d4. Wherein, d4≥0.2 mm. For example, d4 is equal to 0.2 mm, 0.3 mm or 0.4 mm, etc. In this way, light leakage at the guide hole 654 can be avoided.

[0174] In one embodiment, when the variable aperture 60 is in the end state, the distance between the intersection M of two adjacent blades 65 and the inner edge 661a of the first gasket 66 is d5. Wherein, d5 ≥ 0.3 mm. For example, d5 is equal to 0.3 mm, 0.4 mm or 0.5 mm. Wherein, the intersection M is far away from the aperture hole 650 surrounded by the plurality of blades 65. In this way, light leakage at the intersection M of two adjacent blades 65 can be avoided.

[0175] Please refer again Fig. 22, the present application defines the sensitivity of the guide hole 654. The rotation angle of the rotating bracket 63 is dθ. When the rotating bracket 63 rotates relative to the fixed bracket 62, the aperture of the light-transmitting holes 650 of the plurality of blades 65 changes to dD.

[0176] in, , In this way, the guide hole 654 can overcome the tolerance problem of the guide hole 654 during the preparation process, thereby ensuring a good match between the guide hole 654 and the second protrusion 631.

[0177] See also Fig.26 , and combined with Figure 4 As shown, Fig.26 yes Figure 4 The upper cover 73 is shown as a schematic diagram of the structure at different angles. In one embodiment, the upper cover 73 may be an annular structure. The upper cover 73 surrounds a light-transmitting hole 731. The upper cover 73 may be an integral structural member or a spliced ​​structural member. For example, multiple parts are formed into an integral structural member by splicing (such as mortise and tenon technology) or fixing (such as welding, bonding and other processes). This embodiment is described by taking the upper cover 73 as an integral structural member as an example.

[0178] In one embodiment, the upper cover 73 includes a first cover body 732 and a second cover body 733. The second cover body 733 is stacked on the first cover body 732. Exemplarily, the material of the first cover body 732 is a metal material, such as an aluminum sheet or a steel sheet. The material of the second cover body 733 can be plastic, such as polyimide (PI). In this way, the first cover body 732 forms the metal part of the upper cover 73. The second cover body 733 forms the plastic part of the upper cover 73. It can be understood that compared with the upper cover of the plastic structure, the structural strength and impact resistance of the upper cover 73 of this embodiment are better. When the variable aperture 60 falls and hits, the upper cover 73 is not easily damaged or deformed, and the reliability of the upper cover 73 is better. In addition, the upper cover 73 is not easy to squeeze the blade 65 due to damage or deformation, so the blade 65 is not easy to be damaged or deformed, and the reliability of the blade 65 is better.

[0179] In one embodiment, the upper cover 73 can be formed by an insert molding process. For example, a metal material such as an aluminum sheet is placed in a mold and injection molded to form an integral part. It is understandable that, compared with the solution of fixing the first cover body 732 to the second cover body 733 by adhesive or other connectors, this embodiment can simplify the structure of the upper cover 73 and reduce the number of components of the variable aperture 60 by setting the first cover body 732 and the second cover body 733 into an integrally formed structure. On the other hand, the thickness of the connector can be omitted, the thickness of the upper cover 73 can be reduced, which is conducive to realizing a thin setting of the variable aperture 60, and the mass of the upper cover 73 can be reduced, which is conducive to realizing a lightweight setting of the variable aperture 60.

[0180] In other embodiments, the first cover body 732 and the second cover body 733 of the upper cover 73 may also be fixedly connected to each other by adhesive or other means.

[0181] In other embodiments, the second cover 733 may also be made of metal material.

[0182] In one embodiment, the first cover body 732 of the upper cover 73 may be provided with a fixing hole 7321. The number of the fixing holes 7321 may be one or more. When the number of the fixing holes 7321 is more than one, the fixing holes 7321 are arranged around the light-transmitting hole 731 of the upper cover 73.

[0183] In one embodiment, the first cover body 732 of the upper cover 73 may be provided with a first side hole 7322. The first side hole 7322 may be located around the fixing hole 7321. The number of the first side holes 7322 may be one or more. When the number of the first side holes 7322 is more than one, the first side holes 7322 may be arranged around the light-transmitting hole 731 of the upper cover 73.

[0184] In one embodiment, the second cover 733 of the upper cover 73 is provided with a second side hole 7331. The number of the second side holes 7331 may be the same as the number of the first side holes 7322. The second side hole 7331 may connect the first side hole 7322 with the fixing hole 7321. When the second cover 733 is stacked on the first cover 732, the second side hole 7331 is used to expose the fixing hole 7321 and the first side hole 7322 of the first cover 732 relative to the second cover 733.

[0185] In one embodiment, the upper cover 73 is provided with a plurality of first avoidance spaces 7323 arranged at intervals. The opening of each first avoidance space 7323 is located at the bottom surface of the first cover body 732. The plurality of first avoidance spaces 7323 are arranged around the light-transmitting hole 731 of the upper cover 73. In this embodiment, the first avoidance space 7323 is a groove-shaped structure.

[0186] In one embodiment, the upper cover 73 is provided with a plurality of second avoidance spaces 7324. The opening of each second avoidance space 7324 is located at the bottom surface of the first cover body 732. The plurality of second avoidance spaces 7324 are arranged around the light-transmitting hole 731 of the upper cover 73. The plurality of second avoidance spaces 7324 are also arranged at intervals from the plurality of first avoidance spaces 7323. In this embodiment, the opening size of the second avoidance space 7324 is larger than the opening size of the first avoidance space 7323. In this embodiment, the second avoidance space 7324 is a groove-shaped structure.

[0187] See also Fig. 27 , Fig. 27 yes Fig.23A The structure schematic diagram of the variable aperture 60 shown in another angle. The first cover body 732 is fixedly connected to the side of the fixed bracket 62 away from the base 61. The plurality of blades 65 are located between the first cover body 732 and the fixed bracket 62. In this way, in the Z-axis direction, the upper cover 73 can limit the plurality of blades 65, thereby preventing the plurality of blades 65 from coming out. In addition, the light-transmitting holes 731 of the upper cover 73 are arranged opposite to the light-transmitting holes 650 of the plurality of blades 65. In this way, ambient light can be transmitted to the light-transmitting holes 650 of the plurality of blades 65 through the light-transmitting holes 731 of the upper cover 73. Exemplarily, the central axis of the light-transmitting holes 731 of the upper cover 73 can coincide with the central axis of the light-transmitting holes 650 of the plurality of blades 65.

[0188] It is understandable that Fig.11 It can be seen that when the rotating bracket 63 is located inside the fixing seat 630, the first stopper 618a can limit the rotating bracket 63 from moving along the negative direction of the Z axis. Fig. 27 As shown, the upper cover 73 can limit the movement of the rotating bracket 63 along the positive direction of the Z axis. In this way, through the cooperation between the second stopper 626a and the upper cover 73, the movement of the rotating bracket 63 can be limited to reduce the shaking amount of the rotating bracket 63, and then when the variable aperture 60 is hit, the impact of the gap change between the blade 65 and the upper cover 73 after the impact can be reduced.

[0189] In one embodiment, the upper cover 73 is electrically connected to a ground point of the flexible circuit board 69. In this way, the first cover 732 can reduce radio frequency interference.

[0190] See also Fig. 27 , and combined with Fig.26As shown, when the upper cover 73 is fixedly connected to the fixing bracket 62, the fixing block 626b of the fixing bracket 62 passes through the fixing hole 7321 of the upper cover 73. When the number of the fixing block 626b and the fixing hole 7321 are both multiple, the multiple fixing blocks 626b pass through the multiple fixing holes 7321 in a one-to-one correspondence, that is, one fixing block 626b passes through one fixing hole 7321. In this way, the connection between the upper cover 73 and the fixing bracket 62 is more secure. At this time, the upper cover 73 is not easy to fall off from the fixing bracket 62.

[0191] For example, when the fixing block 626b of the fixing bracket 62 passes through the fixing hole 7321 of the upper cover 73, the fixing block 626b of the fixing bracket 62 and the upper cover 73 can be connected by a hot riveting process. The hot riveting process can be to denature or even melt the connection parts of the two metals together by increasing the temperature. In this way, the connection between the upper cover 73 and the fixing bracket 62 is more secure. At this time, the upper cover 73 is not easy to fall off from the fixing bracket 62.

[0192] Please refer again Fig. 27 , and combined with Fig.16 and Fig.26 As shown, in one embodiment, the plurality of first protrusions 621 of the fixing bracket 62 are arranged one by one in the plurality of first avoidance spaces 7323 of the upper cover 73. In this way, the first protrusions 621 of the fixing bracket 62 can be covered by the upper cover 73, so that on the one hand, during the assembly process of the camera module 100, it can be prevented that hair and foreign matter fall into the rotating hole 653 of the blade 65 during the manufacturing process of the camera module 100, affecting the movement of the first protrusion 621 in the rotating hole 653, and on the other hand, the appearance refinement of the variable aperture 60 can be improved.

[0193] In one embodiment, the side walls of the first avoidance space 7323 are rounded, that is, C-angled, so that the connection between the side walls of the first avoidance space 7323 is not easy to scratch the blade 65.

[0194] In one embodiment, the first protrusion 621 of the fixing bracket 62 can be interference fit with the first avoidance space 7323 of the upper cover 73. In this way, the connection between the fixing bracket 62 and the upper cover 73 is more stable, and the upper cover 73 and the fixing bracket 62 can form a structure with better integrity.

[0195] In one embodiment, the plurality of second protrusions 631 of the rotating bracket 63 are disposed in a plurality of second avoidance spaces 7324 of the upper cover 73 in a one-to-one correspondence, and the second protrusions 631 of the rotating bracket 63 can move in the second avoidance spaces 7324. In this way, the second protrusions 631 of the rotating bracket 63 can be covered by the upper cover 73. On the one hand, during the assembly process of the camera module 100, it can be prevented that hair and foreign matter fall into the guide hole 654 of the blade 65 during the manufacturing process of the camera module 100, which affects the movement of the second protrusion 631 in the guide hole 654. On the other hand, the appearance refinement of the variable aperture 60 can be improved.

[0196] In one embodiment, the side walls of the second avoidance space 7324 are rounded, that is, C-angled, so that the connection between the side walls of the second avoidance space 7324 is not easy to scratch the blade 65.

[0197] See also Fig. 27 When the upper cover 73 is fixed to the fixing bracket 62, the second stopper 626a of the fixing bracket 62 passes through the first side hole 7322 and the second side hole 7331 of the upper cover 73. The second stopper 626a of the fixing bracket 62 is fixed to the upper cover 73. Exemplarily, the second stopper 626a may be interference fit with the hole wall of the first side hole 7322. Exemplarily, by providing a glue layer in the first side hole 7322 and the second side hole 7331, the fixing bracket 62 is stably connected to the upper cover 73.

[0198] In addition, in the Z-axis direction, the top surface of the second stopper 626a is higher than the top surface of the upper cover 73. In this way, when the variable aperture 60 is applied to the interior of the electronic device 100, if the variable aperture 60 collides with other components of the electronic device 100, the top surface of the second stopper 626a can be used as the first collision surface, that is, the top surface of the upper cover 73 is not easy to collide with other components of the electronic device. At this time, the first protrusion 621 and the second protrusion 631 arranged at the bottom of the upper cover 73 are not easily damaged due to deformation and extrusion of the upper cover 73.

[0199] See also Fig.28 , Fig.28 yes Fig.26The cross-sectional view of another embodiment of the upper cover 73 shown at the CC line. The second cover body 733 includes a top surface 733a, an outer peripheral side surface 733b and an inner peripheral side surface 733c. The top surface 733a of the second cover body 733 is connected between the outer peripheral side surface 733b of the second cover body 733 and the inner peripheral side surface 733c of the second cover body 733. The top surface 733a of the second cover body 733, the outer peripheral side surface 733b of the second cover body 733 and the inner peripheral side surface 733c of the second cover body 733 are all provided with a coating 734. Exemplarily, a coating 734 is deposited on the top surface 733a of the second cover body 733, the outer peripheral side surface 733b of the second cover body 733 and the inner peripheral side surface 733c of the second cover body 733 by a process such as physical vapor deposition (PVD). The coating 734 may be black or matte black, which can, on the one hand, cover the components at the bottom of the second cover 733 , and on the other hand, greatly improve the appearance refinement of the variable aperture 60 .

[0200] In one embodiment, a coating 734 is deposited on the top surface of the first cover body 732, the outer peripheral side surface of the first cover body 732, and the inner peripheral side surface of the first cover body 732, so as to further shield the devices at the bottom of the first cover body 732 on the one hand, and greatly improve the appearance refinement of the variable aperture 60 on the other hand.

[0201] In one embodiment, an anti-reflection film 735 may be disposed on the surface of the coating 734. The anti-reflection film 735 may largely eliminate the problem of light flare, thereby greatly improving the appearance refinement of the variable aperture 60.

[0202] In one embodiment, no coating is provided on the bottom surface of the first cover 732. Thus, the bottom surface of the first cover 732 can be directly electrically connected to the flexible circuit board 69 and grounded through the flexible circuit board 69. Thus, the first cover 732 can reduce radio frequency interference.

[0203] See also Fig.29 , Fig.29 yes Figure 4 The upper cover 73 shown is a schematic diagram of an exploded view of another embodiment. The first cover body 732 and the second cover body 733 of the upper cover 73 are formed by two independent plates. The first cover body 732 and the second cover body 733 can be fixed into an integral part by bonding or other means. Among them, the first avoidance space 7323 and the second avoidance space 7324 are arranged on the first cover body 732. The first avoidance space 7323 and the second avoidance space 7324 are both hole-shaped structures. When the second cover body 733 fixes the first cover body 732, the second cover body 733 covers the first avoidance space 7323 and the second avoidance space 7324. The structure of the first avoidance space 7323 and the second avoidance space 7324 in the upper cover 73 is a groove-shaped structure.

[0204] The above text specifically introduces the structures of several variable apertures 60 in combination with the relevant drawings. Among them, the size of the light-transmitting holes 650 of the multiple blades 65 of the variable aperture 60 can be accurately adjusted. The variable aperture 60 of the present application is fixedly connected to the rotating bracket 63 by the first magnet 67a and the second magnet 67b, and the first coil 68a and the second coil 68b are fixedly connected to the fixed seat 630, so that when the first coil 68a and the second coil 68b are energized, the first magnet 67a and the second magnet 67b can cooperate with each other, thereby pushing the rotating bracket 63 to rotate relative to the fixed seat 630. It can be understood that the structure of the driving device composed of the first magnet 67a, the second magnet 67b, the first coil 68a and the second coil 68b is relatively simple. The following text will further specifically introduce several variable apertures 60 in combination with the relevant drawings.

[0205] The second implementation mode, the same technical contents as the first implementation mode are not repeated here: Fig.30 , Fig.30 yes Figure 3 FIG. 1 is a partially exploded schematic diagram of another embodiment of the variable aperture 60 shown in FIG. 1 . The variable aperture 60 further includes a second gasket 74. The second gasket 74 may be annular. The second gasket 74 has a light-transmitting hole 741. The light-transmitting hole 741 of the second gasket 74 is located between the aperture hole 650 of the blade 65 and the light-transmitting hole 731 of the upper cover 73, and the light-transmitting hole 741 of the second gasket 74 is connected to each other. The aperture of the light-transmitting hole 741 of the second gasket 74 is larger than the aperture of the aperture hole 650 of the blade 65.

[0206] The second gasket 74 is fixedly connected between the fixing bracket 62 and the upper cover 73. Exemplarily, the second gasket 74 can be fixedly connected between the fixing bracket 62 and the upper cover 73 by means of adhesive or the like. The plurality of blades 65 are located on a side of the second gasket 74 away from the upper cover 73. In this way, the second gasket 74 can separate the blades 65 from the upper cover 73, thereby preventing the upper cover 73 from scratching the blades 65.

[0207] It is understandable that by providing an avoidance hole in the second gasket 74 or changing the shape of the second gasket 74 , the second protrusion 631 of the rotating bracket 63 and the first protrusion 621 of the fixed bracket 62 can be avoided to prevent mutual interference.

[0208] In other embodiments, the second gasket 74 may also form an integral structure with the upper cover 73 .

[0209] In other embodiments, the second gasket 74 may also be fixedly connected to the second protrusion 631 of the rotating bracket 63 .

[0210] In other embodiments, a protective layer may also be provided on the outer surface of the second gasket 74 to prevent the second gasket 74 from being scratched.

[0211] The third implementation mode has the same technical contents as the first and second implementation modes and will not be described in detail: Fig.31 , Fig.31 yes Figure 3 The variable aperture 60 is an exploded schematic diagram of another embodiment of the variable aperture 60 shown in FIG. The variable aperture 60 includes a base 61, a fixed bracket 62, a first matching member 75, a rotating bracket 63, a plurality of balls 64, a plurality of blades 65, a first gasket 66, a first magnet 67a, a second magnet 67b, a first coil 68a, a second coil 68b, a flexible circuit board 69, a driving chip 71, and an upper cover 73. The arrangement of the blades 65, the first gasket 66, and the upper cover 73 can refer to the arrangement of the blades 65, the first gasket 66, and the upper cover 73 described above. No further description is given here.

[0212] In one embodiment, the material settings of the base 61, the fixed bracket 62 and the rotating bracket 63 can refer to the material settings of the base 61, the fixed bracket 62 and the rotating bracket 63 of the first embodiment. No further description is given here. Among them, the fixed bracket 62 has a plurality of first protrusions 621 arranged at intervals. The plurality of first protrusions 621 can be arranged in a ring shape. The number of first protrusions 621 is not limited to Fig.31 The first protrusion 621 may be cylindrical.

[0213] In one embodiment, the base 61 and the fixing bracket 62 may both be annular. The fixing bracket 62 is fixed to the base 61. The connection method of the fixing bracket 62 and the base 61 can refer to the connection method of the base 61 and the fixing bracket 62 in the first embodiment. No further description is given here.

[0214] In one embodiment, the first matching piece 75 may be annular. The first matching piece 75 may be made of metal. In this way, the first matching piece 75 has better strength. The first matching piece 75 is provided with a plurality of rolling grooves 632 arranged at intervals. The plurality of rolling grooves 632 are distributed in an annular shape. The rolling grooves 632 may be long strip-shaped. The opening of the rolling grooves 632 is located on the top surface of the first matching piece 75. In this embodiment, the number of rolling grooves 632 is equal to the number of balls 64 (see Figure 4 ), that is, the number of rolling grooves 632 is four. In other embodiments, the number of rolling grooves 632 is not limited.

[0215] See also Fig.32 , Fig.32 yes Fig.31 The schematic diagram of the assembly of the base 61, the fixing bracket 62 and the first matching member 75 is shown. In one embodiment, the first matching member 75 is fixed to the base 61 and is located inside the fixing bracket 62. The first matching member 75, the base 61 and the fixing bracket 62 together form a fixing seat 630.

[0216] See also Fig.33 , Fig.33 yes Fig.31 Schematic diagram of the assembly of the partial structure of the variable aperture 60 shown. In one embodiment, a portion of the flexible circuit board 69 is fixed to the top of the base 61. A portion of the flexible circuit board 69 is fixed to the first matching member 75. It can be understood that the flexible circuit board 69 fixed to the first matching member 75 is located between the two rolling grooves 632 of the first matching member 75.

[0217] In addition, the first coil 68 a and the second coil 68 b are fixedly connected to the flexible circuit board 69 at intervals, and are both electrically connected to the flexible circuit board 69 .

[0218] In one embodiment, the driving chip 71 can be fixedly connected to the flexible circuit board 69 by welding or the like. The driving chip 71 is also electrically connected to the first coil 68a and the second coil 68b. The driving chip 71 is used to supply power to the first coil 68a and the second coil 68b. In this embodiment, the driving chip 71 is electrically connected to the flexible circuit board 69, and is electrically connected to the first coil 68a and the second coil 68b through the flexible circuit board 69.

[0219] Please refer again Fig.31 The rotating bracket 63 includes a rotating bracket body 76 and a second matching member 77. The top of the rotating bracket body 76 has a plurality of second protrusions 631 arranged at intervals. The plurality of second protrusions 631 can be arranged in a ring. For example, the number of the second protrusions 631 is four. The second protrusions 631 can be a columnar structure.

[0220] See also Fig.34 , Fig.34 yes Fig.31 The structure diagram of the rotating bracket body 76 and the second matching member 77 at another angle is shown. In one embodiment, the bottom of the rotating bracket body 76 is further provided with a first mounting groove 633 and a second mounting groove 634 arranged at intervals. The openings of the first mounting groove 633 and the second mounting groove 634 are both located on the bottom surface of the rotating bracket body 76.

[0221] In one embodiment, the second matching member 77 is provided with a plurality of rotation grooves 6220 arranged at intervals. The opening of each rotation groove 6220 is located at the bottom surface of the second matching member 77. In this embodiment, the number of the rotation grooves 6220 is the same as the number of the balls 64 (see Fig.31 ), that is, the number of the rotating slots 6220 is four. In other embodiments, the number of the rotating slots 6220 is not limited.

[0222] See also Fig.35 , and combined with Fig.34As shown, Fig.35 yes Fig.31 The variable aperture 60 is a partial cross-sectional schematic diagram in one direction. In one embodiment, the second matching member 77 is fixed to the bottom of the rotating bracket body 76. The first magnet 67a can be fixedly connected to the first mounting groove 633 of the rotating bracket body 76 by means of adhesive or the like. The second magnet 67b can be fixedly connected to the second mounting groove 634 of the rotating bracket body 76 by means of adhesive or the like. The second matching member 77 can support the first magnet 67a and the second magnet 67b.

[0223] See also Fig.36 , and combined with Fig.35 As shown, Fig.36 yes Fig.31 The variable aperture 60 is shown as a partial cross-sectional schematic diagram in another direction. The rotating bracket 63 is rotatably connected to the fixing base 630. The rotating bracket 63 is arranged on the inner side of the fixing bracket 62. The rotating bracket 63 is rotatably connected to the fixing base 630.

[0224] The plurality of rotating grooves 6220 and the plurality of rolling grooves 632 are arranged one by one and form a movable space, that is, one rotating groove 6220 and one rolling groove 632 are arranged opposite to each other and form a movable space. Part of the ball 64 is arranged in the rotating groove 6220, and the other part of the ball 64 is located in the rolling groove 632.

[0225] In other embodiments, the ball bearing 64 may also form an integral structure with the rotating bracket 63 . In this way, the ball bearing 64 slides in the rolling groove 632 of the first matching member 75 .

[0226] Please refer again Fig.35 , the first coil 68a is arranged opposite to the first magnet 67a. The second coil 68b is arranged opposite to the second magnet 67b. In this embodiment, when the driving chip 71 receives a signal, the driving chip 71 can transmit a current signal to the first coil 68a and the second coil 68b through the flexible circuit board 69. When there is a current signal in the first coil 68a, the first coil 68a and the first magnet 67a can generate a force that interacts with each other. In this way, when the first magnet 67a is subjected to a force, the first magnet 67a can drive the rotating bracket 63 to rotate relative to the base 61 and the fixed bracket 62. In addition, when the second coil 68b has a current signal, the second coil 68b and the second magnet 67b can generate a force that interacts with each other. In this way, when the second magnet 67b is subjected to a force, the second magnet 67b can drive the rotating bracket 63 to rotate relative to the fixed bracket 62 and the base 61.

[0227] In one embodiment, the variable aperture 100 may further include a first magnetic conductive sheet (not shown) and a second magnetic conductive sheet (not shown). The first magnetic conductive sheet and the second magnetic conductive sheet may be embedded in the base 61. The first magnetic conductive sheet is located around the first magnet 67a. A magnetic force may be generated between the first magnetic conductive sheet and the first magnet 67a. The second magnetic conductive sheet is located around the second magnet 67b. A magnetic force may be generated between the second magnetic conductive sheet and the second magnet 67b. In this way, through the mutual cooperation between the first magnetic conductive sheet and the first magnet 67a, and the mutual cooperation between the second magnetic conductive sheet and the second magnet 67b, the connection between the rotating bracket 63 and the base 61 and the fixed bracket 62 is made more stable, that is, the stability of the rotating bracket 63 is better. In this way, when the rotating bracket 63 rotates relative to the base 61 and the fixed bracket 62, the rotating bracket 63 is not prone to tilting or shaking during the rotation process.

[0228] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A variable aperture (60), characterized in that: It comprises a fixed seat (630), a rotating bracket (63), a plurality of blades (65) and an upper cover (73); The rotating bracket (63) is located inside the fixing seat (630) and is rotatably connected to the fixing seat (630), and the rotating bracket (63) encloses a space (610); The plurality of blades (65) together enclose a light-transmitting hole (650); the light-transmitting holes (650) of the plurality of blades (65) are in communication with the space (610); each blade (65) is rotatably connected to the fixing seat (630) and slidably connected to the rotating bracket (63); The upper cover (73) is fixed to the fixing seat (630) and is located on a side of the blade (65) away from the fixing seat (630); the material of the upper cover (73) includes a metal material; The variable aperture (60) further comprises a first magnet (67a) and a first coil (68a); the first magnet (67a) is fixedly connected to the rotating bracket (63), and the first coil (68a) is fixedly connected to the fixed seat (630); the first magnet (67a) is used to drive the rotating bracket (63) to rotate relative to the fixed seat (630) when the first coil (68a) is energized, so that each of the blades (65) slides relative to the rotating bracket (63) and rotates relative to the fixed seat (630), and the apertures of the light-transmitting holes (650) of the plurality of blades (65) change; A first number of blades (65) among the plurality of blades (65) are located in a first layer, and a second number of blades (65) among the plurality of blades (65) are located in a second layer, the blades in the second layer being closer to the light incident side of the lens assembly than the blades in the first layer; in the circumferential direction, a blade in the second layer is provided between two adjacent blades in the first layer; When the aperture hole (32a) of the variable aperture is at its smallest, adjacent blades of the first layer do not overlap; The distance between the end of the inner edge (651) of the blade (65) close to the light-transmitting holes (650) of the plurality of blades (65) and the edge of the light-transmitting holes (650) of the plurality of blades (65) is d3, wherein d3 is ≥ 0.1 mm; The variable aperture (60) further comprises a first gasket (66), the first gasket (66) being fixedly connected to the rotating bracket (63) and being located on a side of the plurality of blades (65) facing the rotating bracket (63), the inner edge (661a) of the first gasket (66) surrounding a light-transmitting hole (661), the light-transmitting hole (661) of the first gasket (66) being connected to the light-transmitting holes (650) of the plurality of blades (65) and the space (610) of the rotating bracket (63); The variable aperture (60) comprises an initial state and an end state; When the variable aperture (60) is in a starting state, the maximum aperture of the light-transmitting holes (650) of the plurality of blades (65) is smaller than the aperture of the light-transmitting hole (661) of the first gasket (66); When the variable aperture (60) is in an end state, the minimum aperture of the light-transmitting holes (650) of the plurality of blades (65) is greater than or equal to the aperture of the light-transmitting hole (661) of the first gasket (66).

2. The variable aperture (60) according to claim 1, characterized in that: The variable aperture (60) further comprises a flexible circuit board (69), wherein the flexible circuit board (69) is located between the bottom of the rotating bracket (63) and the fixed seat (630); The first coil (68a) is fixedly connected to a side of the flexible circuit board (69) close to the rotating bracket (63), and the plane where the first coil (68a) is wound is perpendicular to the optical axis direction.

3. The variable aperture (60) according to claim 2, characterized in that: The flexible circuit board (69) comprises two ends, the two ends are connected by a connecting circuit, and the connecting circuit is in a curved shape.

4. The variable aperture (60) according to any one of claims 1 to 3, characterized in that: The upper cover (73) comprises a first cover body (732), the first cover body (732) being fixed to the fixing seat (630) and being located on a side of the blade (65) away from the fixing seat (630), and the first cover body (732) being made of a metal material.

5. The variable aperture (60) according to claim 4, characterized in that: The first cover body (732) is an aluminum sheet or a steel sheet.

6. The variable aperture (60) according to claim 4, characterized in that: The first cover body (732) is provided with a fixing hole (7321), and the fixing seat (630) is provided with a fixing block (626b), and the fixing block (626b) is heat-riveted into the fixing hole (7321).

7. The variable aperture (60) according to claim 4, characterized in that: The fixing seat (630) has a plurality of first protrusions (621) arranged at intervals, and the rotating bracket (63) has a plurality of second protrusions (631) arranged at intervals; Each blade (65) is provided with a rotation hole (653) and a guide hole (654) arranged at intervals, a plurality of the first protrusions (621) are rotatably connected to the rotation holes (653) of the plurality of blades (65) in a one-to-one correspondence, and a plurality of the second protrusions (631) are slidably connected to the guide holes (654) of the plurality of blades (65) in a one-to-one correspondence; The first cover body (732) is provided with a plurality of first avoidance spaces (7323) and a plurality of second avoidance spaces (7324) arranged at intervals, a plurality of the first protrusions (621) are arranged in the first avoidance spaces (7323) in a one-to-one correspondence, and a plurality of the second protrusions (631) are arranged in the second avoidance spaces (7324) in a one-to-one correspondence.

8. The variable aperture (60) according to claim 7, characterized in that: The upper cover (73) comprises a second cover body (733), the second cover body (733) fixing the first cover body (732) and being located on a side of the first cover body (732) away from the blade (65), the second cover body (733) covering the first avoidance space (7323) and the second avoidance space (7324).

9. The variable aperture (60) according to claim 8, characterized in that: The top surface (733a) of the second cover body (733), the outer peripheral side surface (733b) of the second cover body (733) and the inner peripheral side surface (733c) of the second cover body (733) are all provided with a coating (734).

10. The variable aperture (60) according to claim 9, characterized in that: An anti-reflection film (735) is provided on the surface of the coating (734).

11. The variable aperture (60) according to any one of claims 7 to 10, characterized in that: The guide hole (654) has a sensitivity of sensitivity, the rotating bracket (63) has a rotation angle of dθ, and when the rotating bracket (63) rotates relative to the fixed bracket (62), the aperture of the light-transmitting holes (650) of the plurality of blades (65) changes to dD; in, , 0.

6.

12. The variable aperture (60) according to any one of claims 1 to 3, characterized in that: The material of the upper cover (73) further includes plastic, and the upper cover (73) is formed by an in-mold injection molding process.

13. The variable aperture (60) according to claim 1, characterized in that: The variable aperture (60) further includes a flexible circuit board (69); The flexible circuit board (69) surrounds the outer peripheral side surface of the fixing base (630) and is fixed to the outer peripheral side surface of the fixing base (630); the first coil (68a) is fixed to the inner peripheral side surface of the flexible circuit board (69) and is electrically connected to the flexible circuit board (69); the first magnet (67a) is fixed to the outer peripheral side surface (630a) of the rotating bracket (63); and the first coil (68a) faces the first magnet (67a).

14. The variable aperture (60) according to claim 13, characterized in that: The flexible circuit board (69) comprises a main body (691) and a first reinforcement part (694), the first reinforcement part (694) being fixed to the main body (691), and the first coil (68a) being fixed to the main body (691) and arranged opposite to the first reinforcement part (694); At least part of the first reinforcement portion (694) is made of magnetic conductive material.

15. The variable aperture (60) according to claim 14, characterized in that: The fixing seat (630) is provided with a first glue storage groove (6270), and the glue layer connects the main body (691) and the groove wall of the first glue storage groove (6270).

16. The variable aperture (60) according to any one of claims 1 to 3, characterized in that: The fixing seat (630) is provided with a first stopper (618a), and the first stopper (618a) is in contact with the bottom of the rotating bracket (63).

17. The variable aperture (60) according to any one of claims 1 to 3, characterized in that: The fixed seat (630) is provided with a rotation groove (6220), and the rotation groove (6220) is used to accommodate a ball (64), so that the rotation bracket (63) and the fixed seat (630) are connected in a rolling manner.

18. The variable aperture (60) according to any one of claims 1 to 3, characterized in that: The fixing seat (630) comprises a base (61) and a fixing bracket (62), wherein the fixing bracket (62) is fixedly connected to the base (61); The fixing bracket (62) comprises an outer ring portion (620a) and an inner ring portion (620b), the inner ring portion (620b) being connected to an inner peripheral side surface (621a) of the outer ring portion (620a), and the inner peripheral side surface (621a) of the outer ring portion (620a) faces the light-transmitting holes (650) of the plurality of blades (65); When the variable aperture (60) is in an initial state, the aperture of the light-transmitting holes (650) of the plurality of blades (65) is minimum, and the minimum distance between a portion of the outer edge (652) of the blade (65) and the inner peripheral side surface (621a) of the outer ring portion (620a) is d1, wherein d1≤50 micrometers.

19. The variable aperture (60) according to any one of claims 1 to 3, characterized in that: When the variable aperture (60) is in an end state, the distance between the second end wall (6542) of the guide hole (654) of the blade (65) and the inner edge (661a) of the first gasket (66) is d4, where d4≥0.2 mm.

20. The variable aperture (60) according to any one of claims 1 to 3, characterized in that: When the variable aperture (60) is in an end state, the distance between the intersection point (M) of two adjacent blades (65) and the inner edge (661a) of the first gasket (66) is d5, where d5≥0.3 mm.

21. The variable aperture (60) according to any one of claims 1 to 3, characterized in that: The variable aperture (60) further comprises a second gasket (74), wherein the second gasket (74) is located between the blades (65) and the upper cover (73).

22. The variable aperture (60) according to any one of claims 1 to 3, characterized in that: The number of the blades (65) is 6.

23. A camera module (100), characterized in that: It comprises a lens assembly (50) and a variable aperture (60) according to any one of claims 1 to 22, wherein the variable aperture (60) is fixedly connected to the lens assembly (50) and is located on the light incident side of the lens assembly (50).

24. The camera module (100) according to claim 23, characterized in that: The lens assembly (50) comprises a motor (51) and a lens (52), wherein the lens (52) is arranged on the motor (51), and the motor (51) is used to drive the lens (52) to move along the optical axis direction of the camera module (100); The variable aperture (60) is fixedly connected to the lens (52) and is located on the light incident side of the lens (52).

25. An electronic device (1), characterized in that: It comprises a housing (200) and a camera module (100) as claimed in claim 23 or 24, wherein the camera module (100) is arranged in the housing (200).

Images