Variable aperture, control method, camera module and electronic device

Abstract

The application provides a variable aperture, a control method, a camera module and an electronic device. The variable aperture comprises a base, a carrier, a plurality of blades, a driving coil, a driving magnet, a first magnetic attraction piece and a second magnetic attraction piece. Through the design of the first magnetic attraction piece and the second magnetic attraction piece, when the position of the blade is at a set target position, the driving coil can be powered off, and the blade can be stably kept at the target position, so that the power-off locking of the blade is realized, the current power consumption of the variable aperture is reduced, and the resolving power of the camera module is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of camera shooting, in particular to a variable aperture, a control method, a camera module and an electronic device. BACKGROUND

[0002] Generally, a camera module includes a variable aperture and a lens, and the variable aperture is installed on the light-in side of the lens. The current power consumption of the variable aperture affects the characteristics of the lens, and further affects the resolving power of the entire camera module.

[0003] However, the current variable aperture has large current power consumption, which leads to a decrease in the resolving power of the camera module. SUMMARY

[0004] The present application provides a variable aperture, a control method, a camera module and an electronic device. The variable aperture includes a base, a carrier, a plurality of blades, a driving coil, a driving magnet, a first magnetic attraction member and a second magnetic attraction member. Through the design of the first magnetic attraction member and the second magnetic attraction member, when the position of the blade is at a set target position, the driving coil can be powered off, and the blade can be stably kept at the target position, thereby realizing the power-off locking of the blade, reducing the current power consumption of the variable aperture, and being conducive to improving the resolving power of the camera module.

[0005] In a first aspect, the present application provides a variable aperture. The variable aperture includes a base, a carrier, a plurality of blades, a driving coil, a driving magnet, a first magnetic attraction member and a second magnetic attraction member. The carrier is rotationally connected to the base, the blade is connected to the base and the carrier, and the plurality of blades enclose an aperture hole. The base includes a bottom plate and a first peripheral side plate, and the first peripheral side plate is connected to the periphery of the bottom plate. The base has a first mounting hole, the first mounting hole penetrates the first peripheral side plate along the radial direction of the variable aperture, and the driving coil and the driving magnet are at least partially located in the first mounting hole. The driving coil is mounted on the bottom plate, and the driving magnet is mounted on the carrier. The driving coil and the driving magnet are oppositely arranged along the thickness direction of the variable aperture. The driving coil is used to drive the driving magnet to drive the carrier to rotate relative to the base, so as to change the aperture size of the aperture hole. The first magnetic attraction member is mounted on the base and located on the side of the driving coil away from the driving magnet. The first magnetic attraction member and the driving magnet are oppositely arranged along the thickness direction of the variable aperture. The second magnetic attraction member is mounted on the base, and the second magnetic attraction member and the driving magnet are oppositely arranged along the radial direction of the variable aperture.

[0006] In the present application, the aperture hole is adjusted by the variable aperture, so as to realize the control of the amount of light entering, the depth of field and the like, so that the camera module can be adaptively adjusted according to different shooting scenes, thereby improving the shooting quality of the camera module in different shooting scenes and improving the shooting capability of the camera module.

[0007] In the present application, due to the design of the first mounting hole, the driving coil can be exposed through the first mounting hole, and the driving coil at least partially coincides with the bottom plate in the thickness direction of the variable aperture, thereby reducing the size space occupied by the driving coil in the thickness direction of the variable aperture, and facilitating the thin design of the variable aperture. In addition, the provision of the first mounting hole also achieves the material reduction design of the base, which can reduce the weight of the base, and is conducive to the lightweight design of the variable aperture.

[0008] In the present application, the provision of the first mounting hole provides installation space for the driving magnet and the driving coil, which can improve the installation convenience of the driving magnet and the driving coil, and can avoid the installation obstruction of the first peripheral side plate to the driving coil and the driving magnet, thereby reducing the radial size of the base and the variable aperture, and facilitating the miniaturization design of the variable aperture.

[0009] In the present application, the first magnetic attraction element and the driving magnet are oppositely arranged in the thickness direction of the variable aperture, so that the first magnetic attraction element can generate a magnetic attraction force in the Z-axis direction with the driving magnet, so that the carrier can be stably connected to the base in the Z-axis direction. The second magnetic attraction element and the driving magnet are oppositely arranged in the radial direction of the variable aperture, so that the second magnetic attraction element can generate a lateral magnetic attraction force with the driving magnet, so that the carrier can be stably connected to the base in the radial direction of the variable aperture. Therefore, during the change of the aperture hole and after the adjustment of the aperture hole is completed, the first magnetic attraction element and the second magnetic attraction element can strengthen the connection between the carrier and the base through the magnetic attraction force of the driving magnet, improve the stability of the connection between the carrier and the base, prevent the carrier from shaking, and improve the stability of the aperture hole. In addition, due to the provision of the first magnetic attraction element and the second magnetic attraction element, the current of the driving coil can be cut off after the adjustment of the aperture hole is completed, and the stability of the carrier and the blade is ensured through the first magnetic attraction element and the second magnetic attraction element, so as to ensure the aperture stability of the aperture hole, realize power-off locking, reduce the steady-state current of the variable aperture, realize power reduction, and improve the resolving power of the camera module when the variable aperture is applied to the camera module.

[0010] In some possible implementation manners, the base further includes a plurality of bearing tables, the bearing tables are provided on the same side of the bottom plate as the first peripheral side plate, the bearing tables are connected to the inner side of the first peripheral side plate, the plurality of bearing tables are arranged at intervals in the circumferential direction of the variable aperture, the side of the bearing table away from the first peripheral side plate is provided with a first mounting groove, and the bearing table has a first bearing surface facing away from the bottom plate; the variable aperture further includes a plurality of rolling elements, one rolling element is installed in one first mounting groove; the carrier includes a body and a plurality of first protrusions, the body has an inner annular surface and an outer annular surface oppositely arranged, the first protrusions are connected to the side of the body facing the bottom plate, and the first protrusions are closer to the inner annular surface than the outer annular surface, the surface of the body facing the bottom plate abuts against the first bearing surface, and the surface of the first protrusion facing the outer annular surface abuts against the rolling element.

[0011] In the implementation, the surface of the body facing the bottom plate can abut against the first bearing surface, i.e., the bottom surface of the body can abut against the first bearing surface, so that the base can provide support for the carrier in the Z-axis direction through the first bearing surface. In addition, since the first bearing surface is higher than the second bearing surface, so that there is a gap between the body and the second bearing surface, the contact area between the body and the bearing table can be prevented from being too large to cause excessive friction. In this way, the frictional resistance of the base to the carrier can be reduced while ensuring that the base provides relatively stable support for the carrier, which is conducive to better rotation of the carrier relative to the base. The surface of the first protrusion facing the outer ring surface of the body can abut against the rolling member, and the rolling member is configured to enable the carrier to rotate relative to the base.

[0012] In the plurality of rolling members, since the first rolling ball is closer to the second magnetic member than the second rolling ball, under the action of the second magnetic member, the carrier moves towards the direction of the second rolling ball driven by the driving magnet, so that the carrier abuts against the second rolling ball in the radial direction of the variable aperture, and the second rolling ball abuts against the base in the radial direction of the variable aperture. In this way, the stability of the carrier in the radial direction of the variable aperture is realized, and the contact stability between the carrier and the second rolling ball is improved, which is conducive to providing rolling friction for the carrier by the second rolling ball to better realize the rotation of the carrier relative to the base.

[0013] In some possible implementation, the variable aperture is applied to an electronic device, and the variable aperture satisfies:

[0014] (F z -mg)μ1L1+F c μ2L2>1.2×(F r1 +F r2 )

[0015] (F c -mg) / (μ1F z )>1.2

[0016] Wherein, F z is the magnetic attraction of the first magnetic member to the driving magnet; m is the total weight of the carrier, the driving magnet and the blade; μ1 is the friction coefficient between the body and the first bearing surface; L1 is the distance between the contact surface of the body and the first bearing surface and the center of the carrier; F c is the magnetic attraction of the second magnetic member to the driving magnet; μ2 is the friction coefficient between the first protrusion and the rolling member; L2 is the distance between the contact point of the first protrusion and the rolling member and the center of the carrier; F r1 is the disturbance torque of the internal device of the electronic device to the variable aperture; F r2 is the disturbance torque of the external environment to the variable aperture.

[0017] In the implementation, the formula design can make the first magnetic attraction member and the second magnetic attraction member generate stable magnetic attraction force with the driving magnet during the change of the aperture hole, thereby providing the carrier with torque in the thickness direction and the lateral direction of the variable aperture to overcome external disturbance of the variable aperture, so that the carrier can stably rotate relative to the base to realize stable switching of the aperture hole. In addition, the formula design can also make the first magnetic attraction member generate strong Z-axis direction magnetic attraction force with the driving magnet and the second magnetic attraction member generate strong lateral magnetic attraction force with the driving magnet after the aperture hole is adjusted, so that the carrier can be stably lapped on the bearing table of the base in the Z-axis direction, and the carrier can be stably abutted on the rolling element in the radial direction of the variable aperture. At this time, the carrier does not need to be controlled by the driving coil to be stable, so that the driving coil can be powered off to reduce the steady-state current of the variable aperture, reduce power consumption, and improve the resolving power of the camera module when the variable aperture is applied to the camera module.

[0018] In some possible implementation, the number of the first mounting holes is multiple, and the multiple first mounting holes are arranged at intervals along the circumference of the variable aperture; the number of the driving magnets, the driving coils and the first magnetic attraction members is multiple, one driving magnet and one driving coil are arranged corresponding to one first mounting hole, and one first magnetic attraction member is arranged corresponding to one driving magnet.

[0019] In the implementation, the number of the first magnetic attraction members can be the same as the number of the driving magnets, and one first magnetic attraction member is arranged corresponding to one driving magnet, so as to ensure that the first magnetic attraction member can be attracted to the driving magnet in the area where each driving magnet is arranged, thereby improving the connection stability of the carrier and the base in the Z-axis direction.

[0020] In some possible implementation, the multiple first mounting holes are uniformly arranged at intervals along the circumference of the variable aperture.

[0021] In the implementation, the multiple first mounting holes can be arranged at intervals along the circumference of the variable aperture, so that the driving magnets and the driving coils are also arranged at intervals along the axial direction of the variable aperture. In this way, the driving magnets and the driving coils can improve the stability of the rotation of the carrier relative to the base.

[0022] In some possible implementation, the first magnetic attraction member is in a strip shape, and the first magnetic attraction member is at least partially arranged opposite to the driving magnet in the rotation stroke of the carrier relative to the base.

[0023] In this implementation, during the rotational stroke of the carrier relative to the base, the first magnetic attractor and the driving magnet are at least partially facing each other, so that the first magnetic attractor can provide the carrier with an attraction force in the Z-axis direction during the rotational stroke of the carrier relative to the base, thereby making the carrier highly stable in the Z-axis direction throughout the entire rotational stroke.

[0024] In some possible implementations, the variable aperture also includes multiple rolling elements located between the carrier and the base; the number of driving magnets is multiple, and the multiple driving magnets are arranged at intervals along the circumference of the variable aperture; the second magnetic attractor is arranged corresponding to one of the multiple driving magnets; the multiple rolling elements include a first ball and a second ball, the first ball being closer to the second magnetic attractor than the second ball, the carrier abutting against the second ball along the radial direction of the variable aperture, and the second ball abutting against the base along the radial direction of the variable aperture.

[0025] In this implementation, the second magnetic attractor is positioned corresponding to only one of the multiple driving magnets, ensuring that the carrier is only subjected to lateral magnetic attraction in one direction. This is beneficial for the carrier's stability in the radial direction of the variable aperture. Among the multiple rolling elements, since the first ball is closer to the second magnetic attractor than the second ball, under the action of the second magnetic attractor, the carrier moves towards the second ball under the influence of the driving magnet. This allows the carrier to abut against the second ball in the radial direction of the variable aperture, and the second ball to abut against the base in the radial direction of the variable aperture. This achieves both the stability of the carrier in the radial direction of the variable aperture and improves the contact stability between the carrier and the second ball. It also facilitates the use of the second ball to provide rolling friction for the carrier, thus better enabling the carrier to rotate relative to the base.

[0026] In some possible implementations, the base also includes a second peripheral side plate, which protrudes from the same side of the base plate as the first peripheral side plate. The base plate has a first through hole, and the second peripheral side plate is circumferentially connected to the periphery of the first through hole, forming a second through hole. The first through hole, the second through hole, and the aperture hole are sequentially connected. The first peripheral side plate, the second peripheral side plate, and the base plate form a first mounting space, and the first mounting hole connects to the first mounting space. The carrier includes a body and a second protrusion. The body is rotatably connected to the base, and the second protrusion is connected to the outer periphery of the body. The second protrusion is located in the first mounting hole. A portion of the driving magnet is installed in the body, and another portion of the driving magnet is installed in the second protrusion. A second magnetic attractor is located in the first mounting space and is installed on the surface of the second peripheral side plate facing the first peripheral side plate.

[0027] In this implementation, due to the structural design of the base, the carrier can be partially installed in the first installation space and fitted onto the outside of the second peripheral side plate. This design helps to improve the stability of the carrier installed on the base and also improves the space utilization rate.

[0028] In some possible implementation manners, the first mounting hole has a first sidewall and a second sidewall on the first circumferential side plate, the first sidewall and the second sidewall are oppositely arranged along the circumference of the variable aperture, the aperture hole has a maximum aperture when the second protrusion abuts against the first sidewall, and the aperture hole has a minimum aperture when the second protrusion abuts against the second sidewall.

[0029] In the implementation manner, the first sidewall and the second sidewall can limit the second protrusion, so that the blade is prevented from being damaged when the carrier rotates.

[0030] In some possible implementation manners, the second magnetic attraction element is in a strip shape, and the second magnetic attraction element is at least partially opposite to the driving magnet in the rotation stroke of the carrier relative to the base.

[0031] In the implementation manner, the second magnetic attraction element is at least partially opposite to the driving magnet in the rotation stroke of the carrier relative to the base, so that the second magnetic attraction element can provide a lateral attractive force for the carrier in the rotation stroke of the carrier relative to the base, and the stability of the carrier in the radial direction of the variable aperture is high in the entire rotation stroke.

[0032] In some possible implementation manners, along the circumference of the variable aperture, the width of the two ends of the second magnetic attraction element is greater than the width of the middle part of the second magnetic attraction element.

[0033] In the implementation manner, because the width of the two ends of the second magnetic attraction element is greater than the width of the middle part, the restoring torque of the carrier generated by the magnetic attraction force of the second magnetic attraction element on the driving magnet during the rotation of the carrier relative to the base is reduced, so that the rotation resistance of the carrier relative to the base is reduced, and power consumption is saved.

[0034] In some possible implementation manners, the first mounting hole includes a first sub-hole and a second sub-hole, the first sub-hole and the second sub-hole are in communication, the first sub-hole penetrates the first circumferential side plate along the radial direction of the variable aperture, the second sub-hole penetrates the bottom plate along the thickness direction of the variable aperture, the driving magnet is located in the first sub-hole, and the driving coil is located in the second sub-hole; the variable aperture further includes a circuit board, the circuit board is installed on the side of the bottom plate away from the carrier, the circuit board covers the second sub-hole, the driving coil is installed on the circuit board and electrically connected to the circuit board, and the first magnetic attraction element is installed on the side of the circuit board away from the driving magnet.

[0035] In the present implementation, the first mounting hole provides installation space for the drive magnet and the drive coil, which can improve the installation convenience of the drive magnet and the drive coil, avoid the first circumferential side plate from hindering the installation of the drive coil and the drive magnet, reduce the radial size of the base, and thus reduce the radial size of the variable aperture, which is conducive to the miniaturization design of the variable aperture.

[0036] The second sub-hole can include a first portion and a second portion, and the first portion of the second sub-hole can be closer to the first through hole than the second portion. The second portion of the second sub-hole can have a larger size along the circumference of the variable aperture than the first portion, and both ends of the second portion of the second sub-hole can extend beyond both ends of the first portion. A portion of the drive coil can be located in the first portion of the second sub-hole, and a portion of the drive coil can be located in the second portion of the second sub-hole. The circuit board can be provided with a plurality of first pads, the first pads can be exposed in the second portion of the second sub-hole, and two first pads can be located on both sides of the drive coil, so that the drive coil can be electrically connected to the circuit board through the first pads.

[0037] In the present implementation, the size of the second portion of the second sub-hole is larger than that of the first portion, so that the drive coil and the first pads can be exposed in the second portion of the second sub-hole at the same time, which provides electrical connection space for the drive coil, facilitates the installation of the drive coil, and improves the space utilization of the base.

[0038] In some possible implementations, the bottom plate has a second mounting slot, the opening of the second mounting slot faces away from the drive magnet, the second mounting slot is communicated with the second sub-hole, and the circuit board is mounted in the second mounting slot.

[0039] In the present implementation, the circuit board can be embedded in the bottom plate through the second mounting slot, thereby reducing the space occupied by the circuit board and facilitating the thin design of the variable aperture.

[0040] The circuit board can be provided with a third mounting slot, the opening of the third mounting slot can face away from the drive coil, and the first magnetic member can be located in the third mounting slot.

[0041] In the present implementation, the first magnetic member can be embedded in the circuit board through the third mounting slot, thereby reducing the space occupied by the first magnetic member and facilitating the thin design of the variable aperture.

[0042] In some possible implementation manners, the base has a plurality of first protruding columns, the plurality of first protruding columns are arranged at intervals along a circumference of the variable aperture; the carrier has a plurality of second protruding columns, the plurality of second protruding columns are arranged at intervals along the circumference of the variable aperture, and the second protruding columns are farther away from a center of the variable aperture than the first protruding columns; the blade has a rotating hole and a sliding hole, the rotating hole is circular, the rotating hole is sleeved on the first protruding column, the sliding hole is arc-shaped, the sliding hole is sleeved on the second protruding column, and the carrier is configured to drive the blade to rotate along the first protruding column by the second protruding column, so as to change an aperture size of the aperture hole.

[0043] In the implementation manner, since the base is fixed and the carrier rotates relative to the base, the positions of the first protruding columns are fixed, and the second protruding columns move relative to the base along with the carrier, so that when the carrier rotates relative to the base, the second protruding columns move in the sliding hole, drive the blade to rotate around the first protruding column by acting on an inner wall of the sliding hole, change the overlapping surface between two adjacent blades, and further change the aperture size of the aperture hole formed by the plurality of blades.

[0044] In some possible implementation manners, the variable aperture further includes a decorative cover, the decorative cover has a fourth through hole, the decorative cover is installed on the base and located on a side away from the carrier, and the fourth through hole is in communication with the aperture hole and has an aperture greater than or equal to a maximum aperture of the aperture hole.

[0045] In the implementation manner, the aperture of the fourth through hole is greater than or equal to the maximum aperture of the aperture hole, so that external light can enter the aperture hole through the fourth through hole, and the decorative cover does not block the aperture hole. The decorative cover can not only play an external decoration role, but also play a dustproof protection role.

[0046] In some possible implementation manners, the driving coil is powered on in a process in which the position of the blade is adjusted from the first target position to the second target position, and the driving coil is powered off when the position of the blade is adjusted to the second target position.

[0047] In the implementation manner, since the standing time of the blade in the variable aperture is much longer than the moving time of the blade, that is, the aperture changing time of the aperture hole is less, the stable current of the variable aperture can be greatly reduced by powering off the driving coil after the position of the blade is adjusted to the target position, power consumption is reduced, and the resolving power of the camera module is improved when the variable aperture is applied to the camera module.

[0048] In the present implementation, the first magnetic attraction member and the drive magnet are arranged opposite to each other along the thickness direction of the variable aperture, so that the first magnetic attraction member and the drive magnet can generate a magnetic attraction force in the Z-axis direction, so that the carrier can be stably connected to the base in the Z-axis direction. The second magnetic attraction member and the drive magnet are arranged opposite to each other along the radial direction of the variable aperture, so that the second magnetic attraction member and the drive magnet can generate a lateral magnetic attraction force, so that the carrier can be stably connected to the base in the radial direction of the variable aperture. Therefore, after the leaf is adjusted to the target position, the current of the drive coil is cut off, the stability of the carrier and the leaf can be ensured by the first magnetic attraction member and the second magnetic attraction member, the aperture stability of the aperture hole is ensured, the power-off locking is realized, the steady-state current of the variable aperture is reduced, the power consumption is reduced, and the resolution of the camera module is improved when the variable aperture is applied to the camera module.

[0049] In a second aspect, the present application provides a camera module. The camera module comprises a lens assembly and a variable aperture according to any one of the first aspect, and the variable aperture is fixedly installed on the light entrance side of the lens assembly.

[0050] In the present application, by designing the variable aperture, the steady-state current of the variable aperture is reduced, thereby reducing the power consumption of the camera module, improving the overall resolution of the camera module, and improving the imaging quality of the camera module.

[0051] In a third aspect, the present application provides an electronic device. The electronic device comprises a shell and a camera module according to the second aspect, and the camera module is installed on the shell.

[0052] In the present application, due to the power consumption reduction design of the variable aperture, the resolution of the camera module is improved, thereby improving the imaging quality and the use experience of the electronic device.

[0053] In a fourth aspect, the present application provides a control method. The variable aperture comprises a base, a carrier, a plurality of leaves, a drive coil, a drive magnet, and a magnetic attraction assembly; the carrier is rotationally connected to the base, the leaves are connected to the base and the carrier, and the plurality of leaves enclose an aperture hole; the drive coil is installed on the base, the drive magnet is installed on the carrier, the drive coil and the drive magnet are arranged opposite to each other along the thickness direction of the variable aperture, and the drive coil is used to drive the drive magnet to drive the carrier to rotate relative to the base, so as to change the aperture size of the aperture hole; the magnetic attraction assembly is installed on the base, and the magnetic attraction assembly is arranged opposite to the drive magnet; the method comprises:

[0054] The variable aperture detects a first instruction, and the first instruction is used to instruct to adjust the leaves to a target position;

[0055] In response to the first instruction, the variable aperture adjusts the leaves to the target position through a closed-loop controller, and executes a first switching strategy;

[0056] The first switching strategy comprises:

[0057] The closed-loop controller is a proportional-integral-differential (PID) controller, and the variable aperture switches the PID controller to a proportional-differential (PD) controller;

[0058] Or,

[0059] The variable aperture switches the closed-loop controller to an open-loop controller.

[0060] In the present application, the aperture adjustment of the aperture hole is realized by the variable aperture, so as to realize the control of the light amount and the depth of field, so that the camera module can be adaptively adjusted for different shooting scenes, thereby improving the shooting quality of the camera module in different shooting scenes and improving the shooting capability of the camera module.

[0061] In the present application, the first switching strategy is a strategy for reducing the steady-state current of the variable aperture, so that the variable aperture can reduce the steady-state current, thereby realizing power reduction and improving the resolving power of the camera module.

[0062] In some possible implementation manners, before the variable aperture executes the first switching strategy, the method further includes:

[0063] The variable aperture determines whether the target position corresponds to the first position or the second position, wherein the aperture hole has the maximum aperture when the target position is at the first position, and the aperture hole has the minimum aperture when the target position is at the second position;

[0064] If not, the first switching strategy includes that the closed-loop controller is a PID controller, and the variable aperture switches the PID controller to a PD controller;

[0065] If yes, the first switching strategy includes:

[0066] The closed-loop controller is a PID controller, and the variable aperture switches the PID controller to a PD controller;

[0067] Or,

[0068] The variable aperture switches the closed-loop controller to an open-loop controller.

[0069] In the present implementation manner, the variable aperture switches the closed-loop controller to an open-loop controller, which is designed in this way so that the control of the blade by the driving chip is switched from the closed-loop control to the open-loop control. In this way, the driving chip no longer adjusts the control of the blade in real time according to the position information feedback of the blade, thereby saving the electric energy consumed by the driving chip in processing the feedback information and realizing power reduction.

[0070] In the present embodiment, due to the arrangement of the first magnetic attraction member and the second magnetic attraction member, the first magnetic attraction member can ensure the stability of the carrier in the thickness direction of the variable aperture through the magnetic attraction force between the first magnetic attraction member and the driving magnet, and the second magnetic attraction member can ensure the stability of the carrier in the radial direction of the variable aperture through the magnetic attraction force between the second magnetic attraction member and the driving magnet. Therefore, after the variable aperture switches the closed-loop controller to the open-loop controller, the current of the driving coil can be reduced, so that the driving coil can be driven by a small current to achieve the stability of the vane in the first position or the second position, thereby reducing power consumption.

[0071] In the present embodiment, when the vane is in the first position, the second protrusion of the carrier abuts against the first side wall, so that the variable aperture only needs to exert a force on the carrier towards the first side wall to ensure the stability of the vane in the first position. Therefore, after the variable aperture switches the closed-loop controller to the open-loop controller, only a unidirectional current needs to be applied to the driving coil to achieve the stability of the vane in the first position, which is conducive to reducing power consumption. Similarly, when the vane is in the second position, the second protrusion of the carrier abuts against the second side wall, so that the variable aperture only needs to exert a force on the carrier towards the second side wall to ensure the stability of the vane in the second position. Therefore, after the variable aperture switches the closed-loop controller to the open-loop controller, only a unidirectional current needs to be applied to the driving coil to achieve the stability of the vane in the second position, which is conducive to reducing power consumption.

[0072] In the present embodiment, during the process of controlling the carrier to move relative to the base to drive the vane to move to the target position, the PID controller adjusts the proportional coefficient Kp, the integral coefficient Ki, and the differential coefficient Kd to achieve accurate control of the position of the vane. Due to the saturation characteristics and hysteresis of the adjustment of the integral coefficient Ki in the PID controller, the current that resists the frictional force is accumulated during the rotation of the carrier relative to the base due to the existence of the frictional force. By closing the adjustment of the integral coefficient, i.e., closing the integral output, after the vane moves to the target position, the PID controller is switched to a PD controller, so that the current that resists the frictional force disturbance is eliminated, thereby reducing the steady-state current of the variable aperture and achieving power consumption reduction.

[0073] In some possible implementations, after the variable aperture switches the closed-loop controller to the open-loop controller, the method further includes:

[0074] determining whether the current position of the vane is within a preset error range of the target position;

[0075] If yes, the variable aperture continues to control the vane through the open-loop controller;

[0076] If no, the variable aperture switches the open-loop controller to the closed-loop controller and controls the vane to adjust to the target position through the closed-loop controller;

[0077] The variable aperture switches the closed-loop controller to an open-loop controller.

[0078] In this implementation, the variable aperture can be adjusted to the target position due to external interference during the adjustment process, thereby making the aperture adjustment more precise and more resistant to risks.

[0079] Among some possible implementations, after executing the first switching strategy, the method also includes:

[0080] If the first command is not detected, when the timing duration of the variable aperture reaches the preset duration, it is determined whether the current position of the blade is the first position or the second position.

[0081] If not, the variable aperture continues to control the blades via the PD controller;

[0082] If so, the variable aperture continues to control the blades via the open-loop controller.

[0083] In this implementation, it is possible to perform cyclic detection and judgment in units of preset duration to adjust the aperture of the variable aperture.

[0084] Fifthly, this application provides an electronic device. It includes: one or more processors; one or more memories; and one or more computer programs, wherein the one or more computer programs are stored in the one or more memories, and the one or more computer programs include instructions that, when executed by the one or more processors, cause the electronic device to perform any of the methods described in the fourth aspect.

[0085] Sixthly, this application provides a computer-readable storage medium. The storage medium stores a program or instructions that, when executed, implement any of the methods described in the fourth aspect.

[0086] In a seventh aspect, this application provides a computer program product. The computer program product stores a program or instructions that, when executed, implement any of the methods described in the fourth aspect. Attached Figure Description

[0087] FIG. 1A This is a schematic diagram of the structure of the electronic device provided in some embodiments of this application;

[0088] FIG. 1B yes FIG. 1A A partial structural exploded view of the electronic device shown.

[0089] FIG. 2 yes FIG. 1A The electronic device shown is partially structurally illustrated in some embodiments after being cut along line AA.

[0090] FIG. 3 is a structural schematic of the variable aperture in the electronic device shown in FIG. 2

[0091] FIG. 4 is a partial structural exploded schematic of the variable aperture in some embodiments shown in FIG. 3

[0092] FIG. 5A is a structural schematic of the base in the variable aperture in some embodiments shown in FIG. 3

[0093] FIG. 5B is a structural schematic of the base in another view shown in FIG. 5A

[0094] FIG. 6 is a structural schematic of the base in yet another view shown in FIG. 5A

[0095] FIG. 7A is a partial structural exploded schematic of the base in some embodiments shown in FIG. 5A

[0096] FIG. 7B is a partial structural schematic of the base in some embodiments shown in FIG. 5A

[0097] FIG. 8 is a structural schematic of the base in some embodiments shown in FIG. 5A

[0098] FIG. 9 is a partial structural exploded schematic of the structure in some embodiments shown in FIG. 8

[0099] FIG. 10A is a structural schematic of the structure in another view shown in FIG. 8

[0100] FIG. 10B is a structural schematic of the structure in yet another view shown in FIG. 8

[0101] FIG. 11A is a structural schematic of the structure in some embodiments shown in FIG. 8

[0102] FIG. 11B is a structural schematic of the structure in some embodiments shown in FIG. 8

[0103] ​​​​​​​​​​​​​FIG. 12A yes FIG. 3 The diagram shows a structural schematic of the carrier in some embodiments of the variable aperture.

[0104] FIG. 12B yes FIG. 12A A schematic diagram of the carrier's structure from another perspective;

[0105] FIG. 13 yes FIG. 12A The diagram shows a partial structural exploded view of the carrier in some embodiments.

[0106] FIG. 14 yes FIG. 12A The diagram shows the structure of the carrier after being cut along line EE in some embodiments;

[0107] FIG. 15A yes FIG. 12A The diagram shows a schematic of the platform in some embodiments where a driving magnet is mounted.

[0108] FIG. 15B yes FIG. 15A A schematic diagram of the structure shown from another perspective;

[0109] FIG. 16 yes FIG. 15A The diagram shows the structure after being cut along line FF in some embodiments;

[0110] FIG. 17 yes FIG. 15A The structure shown is the same as FIG. 8 The diagram shown is a structural schematic of the assembly in some embodiments.

[0111] FIG. 18 yes FIG. 17 The diagram shown is a structural schematic of some embodiments after the structure is cut open along line GG.

[0112] FIG. 19A yes FIG. 17 The structural diagram shown is a cross-section along line H1-H1 in some embodiments.

[0113] FIG. 19B yes FIG. 17 The structural diagram shown is a cross-section along line H2-H2 in some embodiments.

[0114] FIG. 20A yes FIG. 17 The diagram shows the structure after being cut along line I1-I1 in some embodiments.

[0115] FIG. 20B yes FIG. 17 The diagram shows the structure in some embodiments after being cut along line I2-I2;

[0116] FIG. 21A is a structural schematic view of the structure shown in FIG. 1 1 in another perspective view; FIG. 3

[0117] FIG. 21B FIG. 21A FIG. 17

[0118] FIG. 22A is a structural schematic view of the structure shown in FIG. 1 1 in another perspective view; FIG. 3

[0119] FIG. 22B FIG. 22A

[0120] FIG. 23A FIG. 22A FIG. 21B

[0121] FIG. 23B FIG. 23A

[0122] FIG. 24A FIG. 23A

[0123] FIG. 24B FIG. 23A

[0124] FIG. 25 FIG. 3

[0125] FIG. 26 FIG. 25

[0126] FIG. 27 FIG. 25

[0127] FIG. 28 FIG. 3

[0128] FIG. 29A FIG. 3 ​​​​​​​​​​​​​​​​​​​​​​​​​Structure diagram of the variable aperture along the line N1-N1 after being cut open in some embodiments;

[0129] FIG. 29B is FIG. 3 Structure diagram of the variable aperture along the line N2-N2 after being cut open in some embodiments;

[0130] FIG. 30 is a flowchart of the control method provided by an embodiment of the present application;

[0131] FIG. 31 is FIG. 30 Specific flowchart of the control method in some embodiments;

[0132] FIG. 32 is a steady-state current diagram when the variable aperture adopts a closed-loop controller to keep the blade position in some embodiments;

[0133] FIG. 33 is FIG. 30 Specific flowchart of the control method in some other embodiments;

[0134] FIG. 34 is a steady-state current diagram when the variable aperture always adopts a PID controller to control the blade in some embodiments;

[0135] FIG. 35 is a steady-state current diagram when the variable aperture switches the PID controller to a PD controller at the target position in some embodiments;

[0136] FIG. 36 is FIG. 30 Specific flowchart of the control method in some other embodiments. DETAILED DESCRIPTION

[0137] The embodiments of the present application will be described below in conjunction with the accompanying drawings in the embodiments of the present application.

[0138] In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting" should be understood in a broad sense, for example, "connecting" can be detachable connection, or can be non-detachable connection; can be direct connection, or indirect connection through intermediate medium. "Multiple" means at least two.

[0139] The positional terms mentioned in the embodiments of the present application, such as "upper", "lower", "inner", "outer", "top", "bottom", "side" and the like, are only the directions of the drawings, therefore, the positional terms used are for better and clearer illustration and understanding of the embodiments of the present application, and are not indicative or suggestive of the devices or elements referred to necessarily having a particular orientation, being constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0140] In the embodiments of the present application, the relative positional relationship mentioned, such as parallel, vertical, aligned and the like, are all in view of the current process level, and are not absolute strict limits, allowing a small amount of deviation, approximately parallel, approximately vertical, approximately aligned and the like are all acceptable. For example, A is parallel to B, which means that A and B are parallel or approximately parallel, and the included angle between A and B can be between 0 degrees and 10 degrees. For example, A is perpendicular to B, which means that A and B are perpendicular or approximately perpendicular, and the included angle between A and B can be between 80 degrees and 100 degrees.

[0141] In the embodiments of the present application, the terms "first", "second", "third", "fourth" are only for descriptive purposes, and cannot be understood as indicative or suggestive of relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second", "third", "fourth" can explicitly or implicitly include one or more of the features.

[0142] The variable aperture architecture in the current mainstream mobile phone camera module is all bonded on the lens shoulder by glue. The power consumption of the variable aperture affects the characteristics of the lens at all times, and further affects the resolving power of the entire mobile phone camera module. With the increasing demand for miniaturization design of the driving magnet and the driving coil in the variable aperture, while ensuring that the driving magnet and the driving coil have sufficient driving force, the power consumption of the driving coil and the driving chip further increases the influence on the resolving power of the lens and the camera module.

[0143] Based on the above technical problems, the present application improves the structure of the variable aperture and the control method of the variable aperture to achieve the effect of reducing current and power consumption, thereby reducing the influence on the resolving power of the lens and the camera module.

[0144] Next, the specific structure of the electronic device 1000 provided by the present application will be introduced.

[0145] Please refer to FIG. 1A and FIG. 1B , FIG. 1A is a structural schematic diagram of the electronic device 1000 provided by the embodiments of the present application in some embodiments; FIG. 1B is FIG. 1A a partial structure exploded schematic diagram of the electronic device 1000 shown in FIG. 1.

[0146] In some embodiments, the electronic device 1000 can be a mobile phone, a tablet personal computer, a laptop computer, a smart television, a personal digital assistant (PDA), a camera, a personal computer, a notebook computer, a vehicle-mounted device, a wearable device, augmented reality (AR) glasses, an AR helmet, virtual reality (VR) glasses, or a VR helmet, or the like device having a camera function. FIG. 1A In embodiments, the electronic device 1000 is taken as an example of a mobile phone for description, of course, other types of electronic devices 1000 can also adopt similar structures, and the following will not be described in detail.

[0147] It can be understood that, FIG. 1A and FIG. 1B only some components included in the electronic device 1000 are schematically shown, the actual shape, actual size, actual position and actual structure of these components are not limited by FIG. 1A and FIG. 1B the electronic device 1000 can also include more or less components compared with FIG. 1A and FIG. 1B the above.

[0148] In some embodiments, the electronic device 1000 can include a camera module 100, a screen 200, and a housing 300. The screen 200 is configured to display images, videos, and the like. The screen 200 can include a light-transmitting panel 2001 and a display screen 2002. The light-transmitting panel 2001 and the display screen 2002 are arranged in layers and fixedly connected. The light-transmitting panel 2001 is mainly configured to protect and prevent dust from the display screen 2002. The material of the light-transmitting panel 2001 includes, but is not limited to, glass. The display screen 2002 can be a flexible display screen or a rigid display screen. For example, the display screen 2002 can be an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode (AMOLED) display screen, a mini organic light-emitting diode display screen, a micro organic light-emitting diode display screen, a micro organic light-emitting diode display screen, a quantum dot light emitting diode (QLED) display screen, a liquid crystal display (LCD), and the like.

[0149] The shell 300 is used to protect the internal electronic devices of the electronic device 1000. The shell 300 can include a cover plate 3001, a frame 3002, and a camera decoration piece 3003. The cover plate 3001 is located on the side of the display screen 2002 away from the light transmission panel 2001, and is stacked with the light transmission panel 2001 and the display screen 2002. The frame 3002 is fixed to the cover plate 3001. The frame 3002 can be fixed to the cover plate 3001 by adhesive, for example. The frame 3002 can also be an integral structure with the cover plate 3001, i.e., the frame 3002 and the cover plate 3001 are an integral structure. The frame 3002 is located between the cover plate 3001 and the light transmission panel 2001. The light transmission panel 2001 can be fixed to the frame 3002 by adhesive. The light transmission panel 2001, the cover plate 3001, and the frame 3002 form an internal accommodating space of the electronic device 1000. The internal accommodating space accommodates the display screen 2002. The cover plate 3001 can be made of metal, plastic, glass, or the like. The cover plate 3001 can be a single-material plate or a plate structure formed by splicing multiple plates made of multiple materials.

[0150] The camera module 100 is used to take photos / videos, for example. The camera module 100 is installed in the shell 300 and located in the internal accommodating space of the electronic device 1000. The camera module 100 can be used as a rear camera, for example. The light entrance surface of the camera module 100 faces the camera decoration piece 3003. The camera decoration piece 3003 is used to protect the camera module 100.

[0151] In some embodiments, the camera decoration piece 3003 protrudes to the side of the cover plate 3001 away from the light transmission panel 2001. In this way, the camera decoration piece 3003 can increase the installation space of the camera module 100 in the thickness direction of the electronic device 1000. In other embodiments, the camera decoration piece 3003 can be flush with the cover plate 3001 or recessed into the internal accommodating space of the electronic device 1000.

[0152] The camera decoration piece 3003 is provided with a light transmission hole 3005. The light transmission hole 3005 allows light from the scene to enter the light entrance surface of the camera module 100. In other embodiments, the electronic device 1000 can not include the camera decoration piece 3003. In this case, the cover plate 3001 is no longer provided with the mounting hole 3004, and the light transmission hole 3005 is provided on the cover plate 3001. The light transmission hole 3005 allows light from the scene to enter the light entrance surface of the camera module 100.

[0153] In some embodiments, the camera module 100 can also be used as a front-facing camera. For example, the light-incident surface of the camera module 100 faces the light-transmitting panel 2001. The display screen 2002 is provided with a light-path obstruction hole. This light-path obstruction hole allows light from the scene to pass through the light-transmitting panel 2001 and then enter the light-incident surface of the camera module 100. In some embodiments, the electronic device 1000 may also include one or more other camera modules (not shown in the figures), which are not strictly limited in this application.

[0154] In some embodiments, such as FIG. 1B As shown, the electronic device 1000 may further include a circuit board assembly 400 and an image processor 500. The circuit board assembly 400 and the image processor 500 are located within the internal accommodating space of the electronic device 1000. The image processor 500 is fixed to and electrically connected to the circuit board assembly 400. The image processor 500 is communicatively connected to the camera module 100. The image processor 500 is used to acquire image data from the camera module 100 and process the image data. The communication connection between the camera module 100 and the image processor 500 may include data transmission via electrical connections such as wiring, or data transmission via coupling or other methods. It is understood that the camera module 100 and the image processor 500 may also achieve a communication connection through other methods capable of data transmission.

[0155] In some embodiments, the electronic device 1000 may further include an analog-to-digital converter (also known as an A / D converter, not shown in the figure). The analog-to-digital converter is connected between the camera module 100 and the image processor 500. The analog-to-digital converter is used to convert the signal generated by the camera module 100 into a digital image signal and transmit it to the image processor 500, whereby the image processor 500 processes the digital image signal and finally displays the image or video on the screen 200.

[0156] In some embodiments, the electronic device 1000 may further include a memory (not shown in the figure), which is communicatively connected to the image processor 500. The image processor 500 processes the digital image signal and then transmits the image to the memory, so that the image can be retrieved from the memory and displayed on the screen 200 at any time when it is needed to view the image later. In some embodiments, the image processor 500 may also compress the processed digital image signal before storing it in the memory to save memory space.

[0157] In some other embodiments, the electronic device 1000 may also not include the screen 200.

[0158] Understandable FIG. 1A and FIG. 1BThe mounting position of the camera module 100 of the electronic device 1000 in the embodiments shown is merely illustrative, and the application does not strictly limit the mounting position of the camera module 100. In some other embodiments, the camera module 100 can also be mounted at other positions of the electronic device 1000, for example, the camera module 100 can be mounted at the upper middle or upper right corner of the back of the electronic device 1000. In some other embodiments, the electronic device 1000 can include a terminal body 211 and an auxiliary component capable of rotating, moving or detaching relative to the terminal body 211, and the camera module 100 can also be arranged on the auxiliary component.

[0159] To facilitate the introduction of the specific structure and relative position relationship of the electronic device 1000, the coordinate directions are defined, specifically, the direction parallel to the width direction of the electronic device 1000 is defined as the X-axis direction, the direction parallel to the length direction of the electronic device 1000 is defined as the Y-axis direction, and the direction parallel to the thickness direction of the electronic device 1000 is defined as the Z-axis direction. It can be understood that in the present application, the definition of the above-mentioned coordinate directions is only used to illustrate the posture and relative position relationship of the electronic device 1000 and its components in the drawings, and does not limit the specific position of the electronic device 1000 and its components. It can be understood that in some other embodiments, the coordinate directions can also be defined by other references, which are not limited herein.

[0160] Please refer to FIG. 1A and FIG. 2 , FIG. 2 is FIG. 1A the partial structure schematic diagram of the electronic device 1000 along the line A-A after being cut in some embodiments.

[0161] In some embodiments, the camera module 100 can include a variable aperture 10 and a lens assembly 20. The variable aperture 10 is fixedly installed on the light entrance side of the lens assembly 20. The variable aperture 10 has an aperture hole 221, and the variable aperture 10 can adjust the aperture size of the aperture hole 221. Light can be incident from the light transmission hole 3005 of the camera decoration piece 3003 to the aperture hole 221 and transmitted through the aperture hole 221 to the lens assembly 20 to realize imaging.

[0162] In the present embodiment, the aperture adjustment of the aperture hole 221 is realized by the variable aperture 10, so as to realize the control of the amount of light and the depth of field, so that the camera module 100 can be adaptively adjusted for different shooting scenes, thereby improving the shooting quality of the camera module 100 in different shooting scenes and improving the shooting capability of the camera module 100.

[0163] Please refer to FIG. 3 and FIG. 4 , FIG. 3 is FIG. 2Structure diagram of variable aperture 10 in some embodiments of electronic device 1000 shown in the figure; FIG. 4 is FIG. 3 Partial structure exploded diagram of variable aperture 10 in some embodiments shown in the figure.

[0164] In some embodiments, variable aperture 10 can include stator 1, rotor 2, rolling member 3 and decorative cover 4. Rolling member 3 can be arranged between stator 1 and rotor 2, so that rotor 2 can rotate relative to stator 1 through rolling member 3. Decorative cover 4 can be mounted on stator 1 to achieve decoration and dust protection.

[0165] For example, stator 1 can include base 11, magnetic attraction assembly 12, circuit assembly 13 and gasket 14. Magnetic attraction assembly 12, circuit assembly 13 and gasket 14 can be mounted on base 11.

[0166] Among them, circuit assembly 13 can include circuit board 131, drive coil 132, drive chip 133 and capacitor 134. Circuit board 131 can be mounted on base 11, and circuit board 131 is used for external circuit. Drive coil 132 can be mounted on circuit board 131 and electrically connected with circuit board 131, so as to communicate with external power supply through circuit board 131. Drive chip 133 can be mounted on circuit board 131 and electrically connected with circuit board 131, so as to realize the control of drive coil 132. Capacitor 134 can be mounted on circuit board 131 and electrically connected with circuit board 131, so as to realize the current filtering effect.

[0167] For example, magnetic attraction assembly 12 can include first magnetic attraction member 121 and second magnetic attraction member 122.

[0168] Among them, first magnetic attraction member 121 can be mounted on circuit board 131, that is, first magnetic attraction member 121 is mounted on base 11 through circuit board 131.

[0169] For example, rotor 2 can include carrier 21, a plurality of blades 22 and drive magnet 23. Blades 22 can connect base 11 and carrier 21, and a plurality of blades 22 can surround aperture hole 221. Drive magnet 23 can be mounted on carrier 21.

[0170] Among them, magnetic attraction assembly 12 can be arranged opposite to drive magnet 23, so as to improve the structural stability between carrier 21 and base 11.

[0171] It can be understood that, FIG. 3 and FIG. 4 Only some components included in variable aperture 10 are shown schematically, and the actual shape, actual size, actual position and actual structure of these components are not limited to FIG. 3 and FIG. 4Due to limitations, the variable aperture 10 can also include, compared to... FIG. 3 and FIG. 4 More or fewer parts.

[0172] Please refer to the following: FIG. 5A to FIG. 6 , FIG. 5A yes FIG. 3 A schematic diagram of the base 11 in some embodiments of the variable aperture 10 shown; FIG. 5B yes FIG. 5A A schematic diagram of the base 11 shown from another perspective; FIG. 6 yes FIG. 5A The diagram shows the structure of the base 11 from another perspective.

[0173] In some embodiments, the base 11 may include a base plate 111, a first peripheral side plate 112, a second peripheral side plate 113, and a plurality of support platforms 114. The base plate 111 may have a first through hole 1111, the first peripheral side plate 112 is connected to the periphery of the base plate 111, and the second peripheral side plate 113 is connected to the periphery of the first through hole 1111. The first peripheral side plate 112 and the second peripheral side plate 113 protrude from the same side of the base plate 111, and the first peripheral side plate 112, the second peripheral side plate 113, and the base plate 111 enclose a first mounting space 115. The plurality of support platforms 114 are arranged at intervals along the circumference of the variable aperture 10, the support platforms 114 are located within the first mounting space 115, and are connected to the first peripheral side plate 112.

[0174] For example, the base 11 may have a first mounting hole 116, which may include a first sub-hole 1161 and a second sub-hole 1162, which are connected. The first sub-hole 1161 penetrates the first peripheral side plate 112 radially along the variable aperture 10, and the second sub-hole 1162 penetrates the base plate 111 along the thickness direction of the variable aperture 10.

[0175] The second sub-aperture 1162 may include a first portion 1162a and a second portion 1162b. The first portion 1162a of the second sub-aperture 1162 may be closer to the first through-hole 1111 than the second portion 1162b. The second portion 1162b of the second sub-aperture 1162 may have a larger dimension in the circumferential direction along the variable aperture 10 than the first portion 1162a, and both ends of the second portion 1162b of the second sub-aperture 1162 may extend beyond both ends of the first portion 1162a.

[0176] The first sub-hole 1161 can also penetrate the surface of the first side plate 112 facing away from the bottom plate 111.

[0177] The first mounting hole 116 can have a first sidewall 1121 and a second sidewall 1122 on the first peripheral side plate 112, i.e., the first sub-hole 1161 can have a first sidewall 1121 and a second sidewall 1122 on the first peripheral side plate 112. The first sidewall 1121 and the second sidewall 1122 can be oppositely arranged along the circumference of the variable aperture 10.

[0178] For example, the number of first mounting holes 116 can be multiple, and the multiple first mounting holes 116 can be arranged at intervals along the circumference of the variable aperture 10.

[0179] The multiple first mounting holes 116 can be uniformly arranged at intervals along the circumference of the variable aperture 10.

[0180] For example, the number of first mounting holes 116 can be two, and the two first mounting holes 116 can be symmetrically arranged along the center of the variable aperture 10.

[0181] For example, the first peripheral side plate 112 can further have multiple material-reducing holes 1123 arranged at intervals along the circumference of the variable aperture 10. The material-reducing holes 1123 penetrate the first peripheral side plate 112 along the radial direction of the variable aperture 10, and the material-reducing holes 1123 are arranged at intervals with the first sub-holes 1161. The material-reducing holes 1123 can achieve the effects of reducing material, reducing cost, and reducing weight.

[0182] The first peripheral side plate 112 is divided into multiple first mounting plates 1124 and multiple second mounting plates 1125 by the material-reducing holes 1123 and the first sub-holes 1161. The first sub-holes 1161 are located between adjacent two first mounting plates 1124, and the material-reducing holes 1123 are located between the first mounting plates 1124 and the second mounting plates 1125.

[0183] For example, the base 11 can further include multiple mounting columns 117 protruding from the side of the first mounting plate 1124 away from the bottom plate 111. One or more mounting columns 117 can be arranged on one first mounting plate 1124.

[0184] For example, the second peripheral side plate 113 can surround to form a second through hole 1131, and the second through hole 1131 is in communication with the first through hole 1111.

[0185] The base 11 can further include multiple first protruding columns 118 arranged at intervals along the circumference of the variable aperture 10. The first protruding columns 118 can protrude from the side of the second peripheral side plate 113 away from the bottom plate 111.

[0186] Exemplarily, the base 11 can further include a first mounting platform 119 protruding from the second peripheral side plate 113 towards the side of the first mounting hole 116. It should be noted that the base 11 can include only one first mounting platform 119, and the first mounting platform 119 is arranged corresponding to only one of the plurality of first mounting holes 116.

[0187] In the second peripheral side plate 113 where the first mounting platform 119 is arranged, the surface of the second peripheral side plate 113 facing the first mounting hole 116 can be a flat surface.

[0188] In the second peripheral side plate 113 where the first mounting platform 119 is arranged, the surface of the second peripheral side plate 113 facing the first mounting hole 116 can be a flat surface.

[0189] Exemplarily, the side of the bearing platform 114 away from the first peripheral side plate 112 can be provided with a first mounting groove 1141 penetrating through the surface of the bearing platform 114 away from the bottom plate 111 and the surface of the bearing platform 114 facing the second peripheral side plate 113.

[0190] In the second peripheral side plate 113 where the first mounting platform 119 is arranged, the surface of the second peripheral side plate 113 facing the first mounting hole 116 can be a flat surface.

[0191] Exemplarily, the bottom plate 111 can further have a second mounting groove 1112, and the opening of the second mounting groove 1112 is away from the first peripheral side plate 112, i.e., the second mounting groove 1112 is arranged on the side of the bottom plate 111 away from the first peripheral side plate 112. The second mounting groove 1112 is in communication with the second sub-hole 1162.

[0192] Exemplarily, the base 11 can further have a second mounting platform 120 protruding from the side of the bottom plate 111 away from the first peripheral side plate 112, and the second mounting platform 120 is arranged to be connected with the lens assembly 20 when the variable aperture 10 is mounted on the lens assembly 20, thereby improving the stability of the mounting.

[0193] Exemplarily, the bottom plate 111 can further be provided with a second mounting hole 1113 penetrating through the bottom plate 111 along the thickness direction of the variable aperture 10.

[0194] In the second peripheral side plate 113 where the first mounting platform 119 is arranged, the surface of the second peripheral side plate 113 facing the first mounting hole 116 can be a flat surface.

[0195] Please refer to FIG. 5A , FIG. 7A and FIG. 7B , FIG. 7A are FIG. 5AThe base 11 shown is partially exploded in some embodiments; FIG. 7B yes FIG. 5A The diagram shows a partial structural schematic of the base 11 after it is cut open along line BB in some embodiments.

[0196] In some embodiments, the base 11 may include a seat body 11a and a first frame 11b, with the first frame 11b embedded within the seat body 11a to improve the overall structural stability of the base 11.

[0197] For example, the first frame 11b may include a first part 11ba and a second part 11bb. The first part 11ba of the first frame 11b is embedded in the base plate 111, the second part 11bb of the first frame 11b is connected to the first part 11ba, and the second part 11bb of the first frame 11b is embedded in the first peripheral side plate 112. By supporting and reinforcing both the base plate 111 and the first peripheral side plate 112, the overall structural stability of the base 11 is further improved.

[0198] The first part 11ba of the first frame 11b can be provided with a clearance structure to avoid the first mounting hole 116, that is, the first frame 11b will not be exposed at the first mounting hole 116 of the base 11.

[0199] For example, the first frame 11b can be a hard material such as metal or ceramic, while the base 11a can be a material that is easy to process and mold, such as plastic. In this way, the base 11a is easy to process and manufacture, and the first frame 11b provides strength support, making the base 11 easy to manufacture and structurally strong.

[0200] Please refer to the following: FIG. 8 , FIG. 9 and FIG. 10A , FIG. 8 yes FIG. 5A The diagram shown is a structural schematic of the base 11 in some embodiments, in which some components are mounted. FIG. 9 yes FIG. 8 The diagram shown is a partial structural exploded view in some embodiments of the structure. FIG. 10A yes FIG. 8 The diagram shows the structure from another perspective.

[0201] In some embodiments, the base 11 may mount the circuit assembly 13, the first magnetic member 121, the second magnetic member 122, and the rolling member 3.

[0202] For example, the circuit assembly 13 can be mounted on the side of the base plate 111 facing away from the first peripheral side plate 112. At least a portion of the drive coil 132 is located in the first mounting hole 116, with one drive coil 132 corresponding to one first mounting hole 116.

[0203] In the present embodiment, due to the design of the first mounting hole 116, so that the driving coil 132 can be exposed via the first mounting hole 116, the driving coil 132 at least partially coincides with the bottom plate 111 in the Z-axis direction in the thickness direction of the variable aperture 10, thereby reducing the size space occupied by the driving coil 132 in the thickness direction of the variable aperture 10, which is conducive to the thin design of the variable aperture 10. In addition, the design of the first mounting hole 116 also realizes the material reduction design of the base 11, which can reduce the weight of the base 11, which is conducive to the lightweight design of the variable aperture 10.

[0204] Wherein the circuit board 131 can cover the second sub-hole 1162, part of the driving coil 132 can be located in the first part 1162a of the second sub-hole 1162, and part of the driving coil 132 can be located in the second part 1162b of the second sub-hole 1162. A plurality of first pads 1311 are provided on the circuit board 131, the first pads 1311 can be exposed to the second part 1162b of the second sub-hole 1162, and two first pads 1311 can be located on both sides of the driving coil 132, so that the driving coil 132 can be electrically connected to the circuit board 131 via the first pads 1311.

[0205] In the present embodiment, due to the size of the second part 1162b of the second sub-hole 1162 being larger than the first part 1162a, so that the driving coil 132 and the first pad 1311 can be exposed at the same time in the second part 1162b of the second sub-hole 1162, providing electrical connection space for the driving coil 132, which is conducive to the installation of the driving coil 132 and improves the space utilization of the base 11.

[0206] Wherein the driving coil 132 can be formed around the second mounting space, and the driving chip 133 can be located in the second mounting space and electrically connected to the circuit board 131.

[0207] In the present embodiment, the driving chip 133 is installed in the driving coil 132, which not only facilitates the control of the driving chip 133 on the driving coil 132, but also saves space and improves the space utilization of the variable aperture 10.

[0208] Wherein the capacitor 134 can be exposed via the second mounting hole 1113.

[0209] In the embodiment, the second mounting hole 1113 is arranged for accommodating the capacitor 134, which is beneficial for saving space and reducing the extra space occupied by the circuit assembly 13 in the thickness direction of the variable aperture 10, thereby realizing the light and thin design of the variable aperture 10. In addition, since the second mounting hole 1113 is arranged adjacent to the first mounting hole 116, the capacitor 134 is arranged adjacent to the drive coil 132 and the drive chip 133, and the capacitor 134 can provide current filtering for the drive coil 132 and the drive chip 133, thereby improving the transmission quality of the electrical signal and facilitating the drive chip 133 to better control the drive coil 132.

[0210] For example, the second magnetic attraction member 122 is located in the first mounting space 115 and is mounted on the surface of the second peripheral side plate 113 facing the first peripheral side plate 112.

[0211] In the embodiment, since the surface of the second peripheral side plate 113 facing the first mounting hole 116 is a plane, it is beneficial to improve the stability of the second magnetic attraction member 122 mounted on the second peripheral side plate 113.

[0212] In the embodiment, since the surface of the second peripheral side plate 113 facing the first mounting hole 116 is a plane, it is beneficial to improve the stability of the second magnetic attraction member 122 mounted on the second peripheral side plate 113.

[0213] In the embodiment, since the surface of the second peripheral side plate 113 facing the first mounting hole 116 is a plane, it is beneficial to improve the stability of the second magnetic attraction member 122 mounted on the second peripheral side plate 113.

[0214] In the embodiment, since the surface of the second peripheral side plate 113 facing the first mounting hole 116 is a plane, it is beneficial to improve the stability of the second magnetic attraction member 122 mounted on the second peripheral side plate 113.

[0215] For example, the rolling member 3 can be located in the first mounting groove 1141 of the bearing table 114, and the bearing table 114 provides limiting support for the rolling member 3 to avoid the rolling member 3 from disengaging from the first mounting groove 1141.

[0216] For example, the rolling member 3 can be located in the first mounting groove 1141 of the bearing table 114, and the bearing table 114 provides limiting support for the rolling member 3 to avoid the rolling member 3 from disengaging from the first mounting groove 1141. FIG. 10B to FIG. 11B , FIG. 10B is FIG. 8 a structure schematic view of the structure shown in FIG. 11 from another perspective; FIG. 11A is FIG. 8 a structure schematic view of the structure shown in FIG. 11 along the line C-C after being cut in some embodiments; FIG. 11B is FIG. 8 a structure schematic view of the structure shown in FIG. 11 along the line D-D after being cut in some embodiments.

[0217] In some embodiments, the first magnetic attraction member 121 can be mounted on the base 11 and located on the side of the drive coil 132 away from the drive coil 132.

[0218] Exemplarily, the first magnetic attraction member 121 can be mounted on the side of the circuit board 131 opposite to the driving coil 132, so as to realize that the first magnetic attraction member 121 is mounted on the base 11.

[0219] Exemplarily, the bottom plate 111 can have a second mounting groove 1112, the opening of the second mounting groove 1112 is opposite to the first circumferential side plate 112, and the second mounting groove 1112 can be in communication with the second sub-hole 1162. The circuit board 131 can be mounted in the second mounting groove 1112.

[0220] In the embodiment, through the design of the second mounting groove 1112, the circuit board 131 can be embedded in the bottom plate 111, so as to reduce the space occupied by the circuit board 131, and facilitate the light and thin design of the variable aperture 10.

[0221] The circuit board 131 can be provided with a third mounting groove 1312, the opening of the third mounting groove 1312 can be opposite to the driving coil 132, and the first magnetic attraction member 121 can be located in the third mounting groove 1312.

[0222] In the embodiment, through the design of the third mounting groove 1312, the first magnetic attraction member 121 can be embedded in the circuit board 131, so as to reduce the space occupied by the first magnetic attraction member 121, and facilitate the light and thin design of the variable aperture 10.

[0223] In some embodiments, the plurality of rolling members 3 can include first rolling balls 31 and second rolling balls 32, and the first rolling balls 31 are closer to the second magnetic attraction member 122 than the second rolling balls 32.

[0224] Exemplarily, the driving coil 132 corresponding to the second magnetic attraction member 122 can be referred to as a first driving coil 132a, and the driving coil 132 located at other positions can be referred to as a second driving coil 132b. The rolling members 3 mounted on the bearing table 114 located on both sides of the first driving coil 132a are the first rolling balls 31, and the rolling members 3 mounted on the bearing table 114 located on both sides of the second driving coil 132 are the second rolling balls 32.

[0225] Exemplarily, in the bearing table 114, the first bearing surface 1142 is higher than the second bearing surface 1143, so that the rolling member 3 can be mounted through the side of the second bearing surface 1143, facilitating the convenient installation of the rolling member 3.

[0226] Please refer to FIG. 12A and FIG. 12B , FIG. 12A is FIG. 3 the structure schematic view of the carrier 21 in some embodiments of the variable aperture 10 shown in FIG. 11; FIG. 12B is FIG. 12A the structure schematic view of the carrier 21 from another perspective.

[0227] In some embodiments, the carrier 21 can include a body 211, a plurality of first protrusions 212, and a plurality of second protrusions 213. The body 211 can have a ring structure with an inner ring surface 2111 and an outer ring surface 2112 oppositely arranged, the first protrusions 212 are connected to one side of the body 211, and the first protrusions 212 are closer to the inner ring surface 2111 than the outer ring surface 2112. The second protrusions 213 are connected to the outer ring surface 2112 of the body 211.

[0228] For example, the body 211 can have a top surface 2113 and a bottom surface 2114 oppositely arranged. The top surface 2113 is connected between the outer ring surface 2112 and the inner ring surface 2111, and the bottom surface 2114 is connected between the outer ring surface 2112 and the inner ring surface 2111. The first protrusions 212 are connected to the inner ring surface 2111.

[0229] In some embodiments, the carrier 21 can further have a fourth mounting groove 214, and the fourth mounting groove 214 is partially arranged on the bottom surface 2114 and partially arranged on the second protrusions 213.

[0230] For example, the carrier 21 can have a plurality of second protruding columns 215 arranged along the circumference of the variable aperture 10, and the second protruding columns 215 are arranged on the top surface 2113.

[0231] Please refer to FIG. 13 and FIG. 14 , FIG. 13 are FIG. 12A the partial structural exploded view of the carrier 21 in some embodiments; FIG. 14 is FIG. 12A the structural view of the carrier 21 along the line E-E in some embodiments.

[0232] In some embodiments, the carrier 21 can include a main body 21a and a second skeleton 21b. The second skeleton 21b can be embedded in the main body 21a to improve the overall structural strength of the carrier 21.

[0233] For example, the second skeleton 21b can include a first part 21ba and a second part 21bb connected to each other, the first part 21ba of the second skeleton 21b is embedded in the body 211, and the second part 21bb of the second skeleton 21b is embedded in the second protrusions 213. That is, the second part 21bb of the second skeleton 21b provides additional support to the structure of the main body 21a, further improving the overall structural strength of the carrier 21.

[0234] In some embodiments, the second part 21bb of the second skeleton 21b can be exposed to the fourth mounting groove 214.

[0235] For example, the second skeleton 21b can be a hard material such as metal or ceramic, and the main body 21a can be a material easy to process, such as plastic. In this way, the main body 21a is easy to process, and the second skeleton 21b provides strength support, so that the carrier 21 is easy to manufacture and has high structural strength.

[0236] Please refer to FIG. 15A to FIG. 16 , FIG. 15A is a schematic view of the structure of the carrier shown in FIG. 12A is a schematic view of the structure of the carrier shown in FIG. 15B is a schematic view of the structure of the carrier shown in FIG. 15A from another perspective. FIG. 16 is a schematic view of the structure of the carrier shown in FIG. 15A cut along line F-F in some embodiments.

[0237] In some embodiments, the drive magnets 23 can be mounted on the carrier 21. Among them, part of the drive magnets 23 is mounted on the body 211, and the other part of the drive magnets 23 is mounted on the second protrusion 213.

[0238] For example, the drive magnets 23 can be mounted in the fourth mounting groove 214, and through the design of the fourth mounting groove 214, the stability of the drive magnets 23 mounted on the carrier 21 can be improved.

[0239] Among them, the second part 21bb of the second skeleton 21b can be a magnetic material. In this way, the stability of the drive magnets 23 mounted on the carrier 21 can be improved, and the drive magnets 23 can also be provided with a magnetic field guiding function.

[0240] Among them, each drive magnet 23 can include multiple magnets. For example, the drive magnet 23 can include a first magnet 231, a second magnet 232, and a third magnet 233, and the second magnet 232 can be connected between the first magnet 231 and the third magnet 233. Among them, the N-pole surface of the first magnet 231 can face away from the body 211, the N-pole surface of the second magnet 232 can face toward the third magnet 233, and the N-pole surface of the third magnet 233 can face toward the body 211. Among them, FIG. 15B The architecture of the drive magnet 23 shown in

[0241] It should be noted that FIG. 15B The number of magnets and the polarity of the magnets shown are only for illustration and do not limit the number of magnets in the drive magnet 23 and the polarity of each magnet. It can be understood that in some other embodiments, the drive magnet 23 can also include two magnets, and the orientations of the magnetic pole surfaces of the two magnets are opposite.

[0242] Please refer to FIG. 17 andFIG. 18 , FIG. 17 is FIG. 15A the structure shown in FIG. 6A and the structure shown in FIG. 6B in some embodiments. FIG. 8 is a schematic diagram of the structure in some embodiments after the structure shown in FIG. 6A is cut along line G-G. FIG. 18 is FIG. 17 is a schematic diagram of the structure in some embodiments after the structure shown in FIG. 6B is cut along line G-G.

[0243] In some embodiments, the driving magnet 23 and the driving coil 132 can be located at least partially in the first mounting hole 116. Specifically, part of the driving magnet 23 is located in the first sub-hole 1161, part of the driving coil 132 is located in the first sub-hole 1161, and part of the driving coil 132 is located in the second sub-hole 1162.

[0244] In the present embodiment, by providing the first mounting hole 116, installation space is provided for the driving magnet 23 and the driving coil 132, which can improve the installation convenience of the driving magnet 23 and the driving coil 132, avoid the first circumferential side plate 112 from forming an installation obstacle to the driving coil 132 and the driving magnet 23, reduce the radial dimension of the base 11, thereby reducing the radial dimension of the variable aperture 10, and facilitating the miniaturization design of the variable aperture 10.

[0245] In the present embodiment, since the plurality of first mounting holes 116 can be uniformly spaced along the circumference of the variable aperture 10, the driving magnet 23 and the driving coil 132 can also be uniformly spaced along the axial direction of the variable aperture 10. In this way, by cooperation of the driving magnet 23 and the driving coil 132, the stability of the carrier 21 rotating relative to the base 11 can be improved.

[0246] In the present embodiment, when the number of first mounting holes 116 is two, the two first mounting holes 116 can be symmetrically arranged along the center of the variable aperture 10. In this way, by cooperation of the driving magnet 23 and the driving coil 132, the stability of the carrier 21 rotating relative to the base 11 can also be improved.

[0247] For example, the driving magnet 23 can be arranged opposite to the driving coil 132 along the thickness direction of the variable aperture 10, i.e., the driving magnet 23 can be arranged opposite to the driving coil 132 along the Z-axis direction, forming a flat coil structure. The driving magnet 23 and the driving coil 132 can form a driving assembly. After the driving coil 132 is energized, a Lorentz force can be generated under the magnetic field of the driving magnet 23, which can drive the driving magnet 23 to move relative to the driving coil 132, thereby realizing the rotation of the carrier 21 relative to the base 11.

[0248] Exemplarily, the first magnetic attraction member 121 can be arranged opposite to the driving magnet 23 along the thickness direction of the variable aperture 10 to realize magnetic attraction of the driving magnet 23 in the thickness direction of the variable aperture 10, which is conducive to the stability of the carrier 21 in the thickness direction of the variable aperture 10.

[0249] The number of the first magnetic attraction member 121 can be the same as that of the driving magnet 23, and one first magnetic attraction member 121 is arranged corresponding to one driving magnet 23 to ensure that the first magnetic attraction member 121 can be magnetically attracted to the driving magnet 23 in the region where each driving magnet 23 is arranged, thereby improving the connection stability of the carrier 21 and the base 11 in the Z-axis direction.

[0250] The first magnetic attraction member 121 and the driving magnet 23 are at least partially arranged opposite to each other in the rotation stroke of the carrier 21 relative to the base 11, so that the first magnetic attraction member 121 can provide the carrier 21 with an attractive force in the Z-axis direction in the rotation stroke of the carrier 21 relative to the base 11, thereby making the stability of the carrier 21 in the Z-axis direction in the entire rotation stroke higher.

[0251] Exemplarily, the second magnetic attraction member 122 can be arranged opposite to the driving magnet 23 along the radial direction of the variable aperture 10 to realize magnetic attraction of the driving magnet 23 in the radial direction of the variable aperture 10, which is conducive to the stability of the carrier 21 in the radial direction of the variable aperture 10.

[0252] The second magnetic attraction member 122 is arranged corresponding to only one of the plurality of driving magnets 23, so that the carrier 21 is subjected to lateral magnetic attraction in only one direction, which is conducive to the stability of the carrier 21 in the radial direction of the variable aperture 10.

[0253] The second magnetic attraction member 122 and the driving magnet 23 are at least partially arranged opposite to each other in the rotation stroke of the carrier 21 relative to the base 11, so that the second magnetic attraction member 122 can provide the carrier 21 with a lateral attractive force in the rotation stroke of the carrier 21 relative to the base 11, thereby making the stability of the carrier 21 in the radial direction of the variable aperture 10 in the entire rotation stroke higher.

[0254] Please refer to FIG. 19A to FIG. 20B , FIG. 19A is FIG. 17 the structure shown in the structure along the line H1-H1 after cutting in some embodiments of the structure schematic diagram; FIG. 19B is FIG. 17 the structure shown in the structure along the line H2-H2 after cutting in some embodiments of the structure schematic diagram; FIG. 20A is FIG. 17 the structure shown in the structure along the line I1-I1 after cutting in some embodiments of the structure schematic diagram; FIG. 20B is FIG. 17A structure diagram of the structure in some embodiments after the structure is cut along line I2-I2.

[0255] In some embodiments, the carrier 21 can be sleeved outside the second peripheral side plate 113. Among them, the body 211 and the first protrusion 212 can be located in the first mounting space 115, and the second protrusion 213 can be located in the first mounting hole 116.

[0256] In this embodiment, due to the structural arrangement of the base 11, the carrier 21 can be partially mounted into the first mounting space 115 and sleeved outside the second peripheral side plate 113. Such design is conducive to improving the stability of the carrier 21 mounted on the base 11 and improving the space utilization.

[0257] Among them, since the carrier 21 is sleeved outside the second peripheral side plate 113, the second protruding column 215 of the carrier 21 is farther away from the center of the variable aperture 10 than the first protruding column 118 of the base 11.

[0258] For example, the surface of the body 211 facing the bottom plate 111 can abut against the first bearing surface 1142, that is, the bottom surface 2114 of the body 211 can abut against the first bearing surface 1142, so that the base 11 can provide support for the carrier 21 in the Z-axis direction through the first bearing surface 1142. In addition, since the first bearing surface 1142 is higher than the second bearing surface, there is a gap between the body 211 and the second bearing surface, which can avoid the contact surface between the body 211 and the bearing table 114 being too large to cause excessive friction. Such design can reduce the frictional resistance of the carrier 21 to the base 11 while ensuring that the base 11 provides relatively stable support for the carrier 21, which is conducive to the rotation of the carrier 21 relative to the base 11.

[0259] For example, the surface of the first protrusion 212 facing the outer annular surface 2112 of the body 211 can abut against the rolling member 3, and the carrier 21 can be rotated relative to the base 11 through the arrangement of the rolling member 3.

[0260] Among them, in the plurality of rolling members 3, since the first rolling ball 31 is closer to the second magnetic attraction member 122 than the second rolling ball 32, under the action of the second magnetic attraction member 122, the carrier 21 is driven by the driving magnet 23 to move towards the second rolling ball 32, so that the carrier 21 abuts against the second rolling ball 32 along the radial direction of the variable aperture 10, and the second rolling ball 32 abuts against the base 11 along the radial direction of the variable aperture 10. Such design not only realizes the stability of the carrier 21 in the radial direction of the variable aperture 10, but also is conducive to improving the contact stability between the carrier 21 and the second rolling ball 32, and is conducive to providing rolling friction for the carrier 21 through the second rolling ball 32 to better realize the rotation of the carrier 21 relative to the base 11.

[0261] It should be noted that generally, installation allowance is left between the plurality of rolling members 3, so that the carrier 21 can be installed between the plurality of rolling members 3, at this time, under the action of the second magnetic attraction member 122, the carrier 21 abuts against the second rolling member 3, and the carrier 21 has a gap d1 with the first rolling member 31. It can be understood that in other embodiments, the plurality of rolling members 3 can also not leave installation allowance for the installation of the carrier 21, at this time, the carrier 21 abuts against both the first rolling member 3 and the second rolling member 3.

[0262] Please refer to FIG. 21A and FIG. 21B , FIG. 21A is FIG. 3 the structure diagram of the gasket 14 in the variable aperture 10 in some embodiments; FIG. 21B is FIG. 21A the structure diagram of the gasket 14 installed in the structure shown in FIG. 17 .

[0263] In some embodiments, the periphery of the gasket 14 can be provided with a plurality of first openings 141, the plurality of first openings 141 are arranged at intervals along the circumference of the gasket 14, the first openings 141 penetrate the gasket 14 along the thickness direction of the gasket 14, and the first openings 141 penetrate the edge of the gasket 14. The gasket 14 can be installed on the second circumferential side plate 113 of the base 11, and the first openings 141 are connected with the mounting column 117 on the second circumferential side plate 113. Among them, the gasket 14 has a third through hole 142, the third through hole 142 penetrates the gasket 14 along the thickness direction of the gasket 14, and the third through hole 142 communicates with the second through hole 1131 of the base 11.

[0264] In this embodiment, the gasket 14 plays a role in dustproof protection, which can prevent external impurities from entering the inside of the variable aperture 10. The gasket 14 is connected with the mounting column 117 through the first openings 141, which can improve the stability of the gasket 14 installed on the base 11.

[0265] Please refer to FIG. 22A and FIG. 22B , FIG. 22A is FIG. 3 the structure diagram of the plurality of blades 22 in the variable aperture 10 in some embodiments; FIG. 22B is FIG. 22A the structure diagram of one blade 22 in the plurality of blades 22 in some embodiments.

[0266] In some embodiments, the plurality of blades 22 can be arranged to surround the aperture hole 221. Specifically, the plurality of blades 22 are arranged to be partially overlapped in sequence from top to bottom, so that FIG. 22AAs shown in the view angle and the number of the blades 22, in the clockwise direction, the second blade 22 is partially above the first blade 22, the third blade 22 is partially below the second blade 22, the fourth blade 22 is partially above the third blade 22, the fifth blade 22 is below the fourth blade 22, the sixth blade 22 is above the fifth blade 22, and the first blade 22 is below the sixth blade 22. In this way, the aperture size of the aperture 221 can be changed by rotating the blades 22.

[0267] It should be noted that, FIG. 22A The number of the blades 22 is only illustrative and is not intended to limit the number of the blades 22 in the iris 10. As long as the blades 22 can be rotated to change the size of the aperture 221, the number of the blades 22 is not limited.

[0268] For example, the blade 22 can have a rotating hole 222 and a sliding hole 223. The rotating hole 222 can be circular, and the sliding hole 223 can be arc-shaped.

[0269] For reference, FIG. 23A to FIG. 24B , FIG. 23A is FIG. 22A The plurality of blades 22 shown in FIG. 21B is a schematic view of the structure shown in FIG. 23B is a schematic view of the structure shown in another view angle. FIG. 23A is a schematic view of the structure shown in another view angle. FIG. 24A is a schematic view of the structure shown in another view angle. FIG. 23A is a schematic view of the structure shown in another view angle. FIG. 24B is a schematic view of the structure shown in another view angle. FIG. 23A is a schematic view of the structure shown in another view angle.

[0270] In some embodiments, the rotating hole 222 of the blade 22 can be sleeved on the first protruding column 118 of the base 11, and the sliding hole 223 can be sleeved on the second protruding column 215 of the carrier 21. The carrier 21 is used to drive the first protruding column 118 of the blade 22 to rotate by the second protruding column 215 to change the aperture size of the aperture 221.

[0271] In this embodiment, since the base 11 is fixed and the carrier 21 rotates relative to the base 11, the position of the first protruding column 118 is fixed, and the second protruding column 215 moves relative to the base 11 with the carrier 21. Therefore, when the carrier 21 rotates relative to the base 11, the second protruding column 215 moves in the sliding hole 223, and drives the blade 22 to rotate around the first protruding column 118 by acting on the inner wall of the sliding hole 223, thereby changing the overlapping surface between the adjacent two blades 22, and further changing the aperture size of the aperture 221 formed by the plurality of blades 22.

[0272] For example, when the second protrusion 213 abuts against the first sidewall 1121, the aperture 221 has the maximum aperture, and when the second protrusion 213 abuts against the second sidewall 1122, the aperture 221 has the minimum aperture.

[0273] In this embodiment, the first sidewall 1121 and the second sidewall 1122 can form a limiting position for the second protrusion 213, which can prevent damage to the blade 22 when the carrier 21 drives the blade 22 to rotate. In other words, when the second protrusion 213 abuts against the first sidewall 1121 or the second sidewall 1122, there is a gap between the second protrusion 215 and the two ends of the sliding hole 223. This design can prevent the second protrusion 215 from driving the blade 22 to rotate excessively, so as to avoid damage to the blade 22 due to excessive force.

[0274] by FIG. 23B Taking the structure shown as an example, when the carrier 21 rotates counterclockwise relative to the base 11, the aperture of the aperture 221 gradually increases in size. When the second protrusion 213 abuts against the first sidewall 1121, the carrier 21 can no longer move counterclockwise. At this time, the blade 22 is in the first position, and the aperture 221 has its maximum aperture. Similarly, when the carrier 21 rotates clockwise relative to the base 11, the aperture of the aperture 221 gradually decreases in size. When the second protrusion 213 abuts against the second sidewall 1122, the carrier 21 can no longer move clockwise. At this time, the blade 22 is in the second position, and the aperture 221 has its minimum aperture.

[0275] For example, the first through hole 1111 of the base plate 111, the second through hole 1131 of the second peripheral side plate 113, the third through hole 142 of the gasket 14 and the aperture hole 221 are connected in sequence. With this design, light can pass through the aperture hole 221, the third through hole 142, the second through hole 1131 and the first through hole 1111 in sequence and enter the lens assembly that is connected to the variable aperture 10.

[0276] Please refer to the following: FIG. 25 to FIG. 27 , FIG. 25 yes FIG. 3 A schematic diagram of the decorative cover 4 in some embodiments of the variable aperture 10 shown; FIG. 26 yes FIG. 25 The decorative cover 4 shown is an exploded structural diagram in some embodiments; FIG. 27 yes FIG. 25 The decorative cover 4 shown is cut open along line LL and is a structural diagram of one side of the embodiment.

[0277] In some embodiments, the decorative cover 4 may have a fourth through hole 41, which penetrates the decorative cover 4 along the thickness direction of the decorative cover 4, that is, the fourth through hole 41 penetrates the decorative cover 4 along the Z-axis direction.

[0278] Exemplarily, the decorative cover 4 can include a first cover body 42 and a second cover body 43, which can be arranged in a stacked manner.

[0279] The first cover body 42 can include a first cover body 42a and a third skeleton 42b, and the third skeleton 42b is embedded in the first cover body 42a to improve the overall structural strength of the first cover body 42.

[0280] The first cover body 42a and the third skeleton 42b can be provided with weight-reducing holes, which can not only reduce the material and weight, but also form an I-shaped structure to improve the structural strength.

[0281] For example, the third skeleton 42b can be a hard material such as metal or ceramic, and the first cover body 42a can be a material easy to process and form, such as plastic. In this way, the first cover body 42a is easy to process and prepare, and the third skeleton 42b provides strength support, so that the first cover body 42 is easy to prepare and has high structural strength.

[0282] The first cover body 42a can also be provided with a plurality of second openings 421a, which can be arranged at intervals along the circumference of the first cover body 42a. The second openings 421a can penetrate the first cover body 42a along the Z-axis direction, and the second openings 421a penetrate the side surface of the first cover body 42a.

[0283] The side edges of the second cover body 43 and the first cover body 42 are provided with protruding structures.

[0284] Please refer to FIG. 3 and FIG. 25 In some embodiments, the decorative cover 4 can be mounted on the base 11, wherein the edge of the decorative cover 4 is lapped on the first circumferential side plate 112, and the second opening 421a can be connected with the mounting column 117 to improve the stability of the decorative cover 4 mounted on the base 11.

[0285] Exemplarily, the fourth through hole 41 can communicate with the aperture hole 221, and the aperture diameter of the fourth through hole 41 is greater than or equal to the maximum aperture diameter of the aperture hole 221, so that external light can enter the aperture hole 221 through the fourth through hole 41, and the decorative cover 4 will not block the aperture hole 221. The decorative cover 4 not only has an external decoration function, but also has a dustproof protection function.

[0286] The side edge protruding structures of the second cover body 43 and the first cover body 42 can block the second protruding block 213 of the carrier 21, thereby playing a role in shielding decoration.

[0287] Please refer to FIG. 28 to FIG. 29B , FIG. 28 is FIG. 3Structure schematic diagram of the variable aperture 10 in some embodiments after being cut along line M-M; FIG. 29A is FIG. 3 Structure schematic diagram of the variable aperture 10 in some embodiments after being cut along line N1-N1. FIG. 29B is FIG. 3 Structure schematic diagram of the variable aperture 10 in some embodiments after being cut along line N2-N2.

[0288] In the embodiment, the first magnetic attraction member 121 and the driving magnet 23 are oppositely arranged along the thickness direction of the variable aperture 10, so that the first magnetic attraction member 121 can generate a magnetic attraction force with the driving magnet 23 in the Z-axis direction, so that the carrier 21 can be stably connected to the base 11 in the Z-axis direction. The second magnetic attraction member 122 and the driving magnet 23 are oppositely arranged along the radial direction of the variable aperture 10, so that the second magnetic attraction member 122 can generate a lateral magnetic attraction force with the driving magnet 23, so that the carrier 21 can be stably connected to the base 11 in the radial direction of the variable aperture 10. Therefore, during the change of the aperture hole 221, and after the adjustment of the aperture hole 221 is completed, the first magnetic attraction member 121 and the second magnetic attraction member 122 can strengthen the connection between the carrier 21 and the base 11 through the magnetic attraction force with the driving magnet 23, improve the stability of the connection between the carrier 21 and the base 11, prevent the carrier 21 from shaking, and improve the stability of the aperture hole 221. In addition, due to the arrangement of the first magnetic attraction member 121 and the second magnetic attraction member 122, the current of the driving coil 132 can be cut off after the adjustment of the aperture hole 221 is completed, and the stability of the carrier 21 and the blade 22 is ensured through the first magnetic attraction member 121 and the second magnetic attraction member 122, so as to ensure the aperture stability of the aperture hole 221, realize power-off locking, reduce the steady-state current of the variable aperture 10, realize power saving, and improve the resolving power of the camera module 100 when the variable aperture 10 is applied to the camera module 100.

[0289] In the embodiment, the width of the two ends of the second magnetic attraction member 122 is greater than the width of the middle region, which can reduce the restoring torque of the carrier 21 generated by the magnetic attraction force of the second magnetic attraction member 122 on the driving magnet 23 during the rotation of the carrier 21 relative to the base 11, thereby reducing the rotation resistance of the carrier 21 relative to the base 11, and saving power consumption.

[0290] In some embodiments, the driving coil 132 is energized during the adjustment of the position of the blade 22 from the first target position to the second target position; and the driving coil 132 is de-energized when the position of the blade 22 is adjusted to the second target position.

[0291] In the embodiment, since the time of the static blade 22 in the variable aperture 10 is much longer than the time of the movement of the blade 22, that is, the time of the aperture change of the aperture hole 221 is less, by adjusting the position of the blade 22 to the position after the driving coil 132 is powered off, the stable current of the variable aperture 10 can be greatly reduced, the power consumption is reduced, and the resolution of the camera module 100 is improved when the variable aperture 10 is applied to the camera module 100.

[0292] In some embodiments, the variable aperture 10 can meet:

[0293] (F z -mg)μ1L1+F c μ2L2>1.2×(F r1 +F r2 )

[0294] (F c -mg) / (μ1F z )>1.2

[0295] Wherein, F z is the magnetic attraction force of the first magnetic attraction element 121 to the driving magnet 23; m is the total weight of the carrier 21, the driving magnet 23 and the blade 22; μ1 is the friction coefficient between the body 211 and the first bearing surface 1142; L1 is the distance between the contact surface of the body 211 and the first bearing surface 1142 and the center of the carrier 21; F c is the magnetic attraction force of the second magnetic attraction element 122 to the driving magnet 23; μ2 is the friction coefficient between the first protrusion 212 and the rolling element 3; L2 is the distance between the contact point of the first protrusion 212 and the rolling element 3 and the center of the carrier 21; F r1 is the disturbance torque of the internal device 1000 to the variable aperture 10; F r2 is the disturbance torque of the external variable aperture 10 to the variable aperture 10.

[0296] It should be noted that F r1 Specifically, the disturbance torque of the internal variable aperture 10 to the variable aperture 10 of the electronic device 1000, the specific value can be tested according to the specific structure of the electronic device 1000. F r2 Specifically, the disturbance torque of the external variable aperture 10 to the variable aperture 10 of the electronic device 1000, which can be tested according to the use scene of the electronic device 1000, for example, the extreme scene of the electronic device 1000 can be selected for testing value, or the most commonly used scene of the electronic device 1000 can be tested for value.

[0297] In this embodiment, through the above formula design, stable magnetic attraction force can be generated between the first magnetic attraction member 121 and the second magnetic attraction member 122 and the driving magnet 23 in the process of changing the aperture hole 221, so as to provide the carrier 21 with torque in the thickness direction and the lateral direction of the variable aperture 10 to overcome external disturbances of the variable aperture 10, so that the carrier 21 can stably rotate relative to the base 11 to realize stable switching of the aperture of the aperture hole 221. In addition, through the above formula design, after the adjustment of the aperture hole 221 is completed, the first magnetic attraction member 121 can generate a strong magnetic attraction force in the Z-axis direction with the driving magnet 23, and the second magnetic attraction member 122 can generate a strong magnetic attraction force in the lateral direction with the driving magnet 23, so that the carrier 21 can be stably lapped on the carrier table 114 of the base 11 in the Z-axis direction, and the carrier 21 can be stably abutted to the rolling member 3 in the radial direction of the variable aperture 10. At this time, the carrier 21 does not need to be controlled stably by the driving coil 132, so that the driving coil 132 can be powered off to reduce the steady-state current of the variable aperture 10, thereby reducing power consumption and improving the resolving power of the camera module 100 when the variable aperture 10 is applied to the camera module 100.

[0298] Next, the control method provided by the present application will be introduced.

[0299] Please refer to FIG. 28 and FIG. 30 , FIG. 30 is a flowchart of the control method provided by an embodiment of the present application.

[0300] In some embodiments, a cyclic detection method can be used to detect whether the variable aperture 10 receives the first instruction. The first instruction is used to indicate that the blade 22 is adjusted to the target position to realize the aperture adjustment of the aperture hole 221.

[0301] Specifically, the control method can include the following steps:

[0302] Step S1, detecting whether there is a first instruction.

[0303] If yes, step S201 is performed, and if no, step S211 is performed.

[0304] Step S201, in response to the first instruction, the variable aperture controls the blade to adjust to the target position through the closed-loop controller, and executes the first switching strategy.

[0305] The variable aperture can be the variable aperture 10 in FIG. 28 The blade can be the blade 22 in FIG. 28 .

[0306] The first switching strategy is a strategy for reducing the steady-state current of the variable aperture 10. The first switching strategy can include: the variable aperture 10 controlling the driving coil 132 to be powered off, the variable aperture 10 switching the closed-loop controller to an open-loop controller, the variable aperture 10 switching the first closed-loop controller to a second closed-loop controller, wherein the first closed-loop controller is a proportion integration differentiation (PID) controller, and the second closed-loop controller is a proportional-derivative (PD) controller, and the like. The specific implementation of the first switching strategy will be described in detail below.

[0307] The various controllers can be integrated in the driving chip 133.

[0308] Step S202, the timer is cleared.

[0309] Step S211, the timer is incremented.

[0310] Step S212, it is judged whether the timing duration reaches the preset duration.

[0311] The preset duration is a preset duration, which can be designed according to different application scenarios or requirements, and the specific duration value is not limited here.

[0312] If yes, step S213 is performed, and if no, step S1 is continued.

[0313] Step S213, it is judged whether the current position is the first position or the second position.

[0314] When the blade 22 is in the first position, the aperture hole 221 has the maximum aperture, and when the blade 22 is in the second position, the aperture hole 221 has the minimum aperture.

[0315] If yes, step S2141 is performed, and if no, step S2142 is performed.

[0316] Step S2141, the variable aperture continues to control the blade by the first mode.

[0317] Step S2142, the variable aperture continues to control the blade by the second mode.

[0318] According to the different current positions of the blade 22, different modes are used to control the blade 22, so as to adopt appropriate control modes for different scenes, and realize the reduction of the steady-state current of the variable aperture 10.

[0319] Please refer to FIG. 28 , FIG. 30 and FIG. 31 ,FIG. 31 is FIG. 30 The specific flowchart of the control method in some embodiments is shown. It should be noted that, FIG. 31 The control method shown in the figure does not show the loop control.

[0320] In some embodiments, a control method S100 is provided, before executing the first switching strategy, the target position is judged, and then the specific execution of the first switching strategy is determined. The first switching strategy can include: the variable aperture 10 switches the closed-loop controller to the open-loop controller, or the variable aperture 10 controls the driving coil 132 to be powered off.

[0321] Specifically, the control method S100 can include the following specific steps:

[0322] Step S110, judge whether the target position is the first position or the second position.

[0323] If yes, the first switching strategy is step S1111, step S1111 is executed, and if no, the first switching strategy is step S1121, step S1121 is executed.

[0324] Step S1111, the variable aperture switches the closed-loop controller to the open-loop controller.

[0325] Since in the first position, the blades 22 of the variable aperture 10 need to be fully opened, the variable aperture 10 needs to provide a larger driving force to overcome the mechanical resistance and friction. Similarly, in the second position, the blades 22 of the variable aperture 10 need to be tightly closed, which also needs a larger driving force to ensure the tight contact and position stability between the blades 22. The driving chip 133 of the variable aperture 10 will adjust the current output according to the actual opening degree of the aperture hole 221 to ensure that the aperture motor can accurately position to the target position. However, in the first position and the second position, due to the particularity of mechanical movement, the driving chip 133 needs to output larger current to overcome the mechanical resistance and friction, thereby causing the steady-state current of the variable aperture 10 to surge.

[0326] The steady-state current of the variable aperture maintaining the closed-loop control can refer to FIG. 32 , FIG. 32 The steady-state current diagram of the variable aperture adopting the closed-loop controller to maintain the blade position in some embodiments. Among them, the horizontal coordinate is the motor stroke, different motor strokes correspond to different positions of the blades, and the motor stroke of 0 corresponds to the first position of the blades. It can be understood that in other embodiments, the motor stroke of 0 corresponds to the second position of the blades, and the motor stroke of 4000 corresponds to the first position of the blades.

[0327] From FIG. 32It can be seen that when the variable aperture always controls the blades through the closed-loop controller, the steady-state current in the variable aperture increases significantly in the first and second positions compared to other positions.

[0328] In this embodiment, the variable aperture 10 switches the closed-loop controller to an open-loop controller. This design allows the drive chip 133 to switch the control of the blade 22 from closed-loop control to open-loop control. As a result, the drive chip 133 no longer adjusts the control of the blade 22 in real time based on the position information feedback, thereby saving the power consumed by the drive chip 133 in processing feedback information and reducing power consumption.

[0329] In this embodiment, the arrangement of the first magnetic attractor 121 and the second magnetic attractor 122 ensures the stability of the carrier 21 in the thickness direction of the variable aperture 10 through the magnetic attraction between the first magnetic attractor 121 and the driving magnet 23, and ensures the stability of the carrier 21 in the radial direction of the variable aperture 10 through the magnetic attraction between the second magnetic attractor 122 and the driving magnet 23. Therefore, after the variable aperture 10 switches from a closed-loop controller to an open-loop controller, the current of the drive coil 132 can be reduced. Thus, the drive coil 132 can achieve the stability of the blade 22 in the first or second position with a small current, thereby reducing power consumption.

[0330] In this embodiment, it can be referred to in conjunction with FIG. 23A Since the second protrusion 213 of the carrier 21 abuts against the first sidewall 1121 when the blade 22 is in the first position, the variable aperture 10 only needs to apply a force toward the first sidewall 1121 to the carrier 21 to ensure the stability of the blade 22 in the first position. Therefore, after the variable aperture 10 switches the closed-loop controller to the open-loop controller, it only needs to control the application of a unidirectional current in the drive coil 132 to achieve the stability of the blade 22 in the first position, which is beneficial to reducing power consumption. Similarly, when the blade 22 is in the second position, the second protrusion 213 of the carrier 21 abuts against the second sidewall 1122. Therefore, the variable aperture 10 only needs to apply a force toward the second sidewall 1122 to the carrier 21 to ensure the stability of the blade 22 in the second position. Therefore, after the variable aperture 10 switches the closed-loop controller to the open-loop controller, it only needs to control the application of a unidirectional current in the drive coil 132 to achieve the stability of the blade 22 in the second position, which is beneficial to reducing power consumption.

[0331] It should be noted that after the variable aperture 10 switches to an open-loop controller, it can switch from high-current control to low-current control while ensuring the stability of the blade 22. The specific value of the low current can be calculated according to different application scenarios and requirements of the variable aperture 10, and the calculated value is used as the set value to be applied when the variable aperture 10 switches to an open-loop controller.

[0332] Step S1112, determine whether the current position of the blade is within the preset error range of the target position.

[0333] If yes, execute step S1113, if not, execute step S1114.

[0334] Step S1113, the variable aperture continues to control the blade through the open loop controller.

[0335] It should be noted that, FIG. 30 The "variable aperture continues to control the blade through the first mode" in step S2141 in the above embodiment can refer to "the variable aperture continues to control the blade through the open loop controller" in step S1113 in the above embodiment.

[0336] Step S1114, the variable aperture switches the open loop controller to the closed loop controller, and controls the blade to adjust to the target position through the closed loop controller.

[0337] Continue to execute step S1111.

[0338] In the above embodiment, by executing steps S1112 and S1114, the condition that the variable aperture 10 is not adjusted to the target position due to external interference during the adjustment of the variable aperture 10 can be coped with, so that the adjustment of the aperture hole 221 is more accurate and has strong risk resistance.

[0339] Wherein, the current position of the blade 22 can be determined by the Hall value measured by the Hall element, so as to determine whether the current position of the blade 22 is within the preset error range of the target position.

[0340] Wherein, the Hall element can be integrated in the driving chip 133.

[0341] Step S1121, the variable aperture 10 controls the driving coil to be powered off.

[0342] Wherein, the driving coil can be the driving coil 132 in the above embodiment. FIG. 28

[0343] ​In the embodiment, the first magnetic attraction member 121 and the driving magnet 23 are oppositely arranged along the thickness direction of the variable aperture 10, so that the first magnetic attraction member 121 can generate a magnetic attraction force with the driving magnet 23 in the Z-axis direction, so that the carrier 21 can be stably connected to the base 11 in the Z-axis direction. The second magnetic attraction member 122 and the driving magnet 23 are oppositely arranged along the radial direction of the variable aperture 10, so that the second magnetic attraction member 122 can generate a lateral magnetic attraction force with the driving magnet 23, so that the carrier 21 can be stably connected to the base 11 in the radial direction of the variable aperture 10. Therefore, after the blade 22 is adjusted to the target position, the current of the driving coil 132 is cut off, the stability of the carrier 21 and the blade 22 can be ensured by the first magnetic attraction member 121 and the second magnetic attraction member 122, the aperture stability of the aperture hole 221 is ensured, the power-off locking is realized, the steady-state current of the variable aperture 10 is reduced, the power consumption is reduced, and the resolution of the camera module 100 is improved when the variable aperture 10 is applied to the camera module 100.

[0344] In step S1122, it is judged whether the current position of the blade 22 is within the preset error range of the target position.

[0345] If yes, step S1123 is executed, and if no, step S1124 is executed.

[0346] In step S1123, the variable aperture continues to control the driving coil to be powered off.

[0347] It should be noted that, FIG. 30 The "variable aperture continues to control the blade by the second mode" in step S2142 can refer to "variable aperture continues to control the driving coil to be powered off" in step S1123.

[0348] In step S1124, the variable aperture controls the driving coil to be powered on and drives the blade to adjust to the target position.

[0349] Step S1121 is continued to be executed.

[0350] In the embodiment, by executing steps S1122 and S1124, the condition that the variable aperture 10 is not adjusted to the target position due to external interference during the adjustment of the variable aperture 10 can be coped with, so that the adjustment of the aperture hole 221 is more accurate and the risk resistance is strong.

[0351] The current position of the blade 22 can be judged by the Hall value measured by the Hall element, so as to judge whether the current position of the blade 22 is within the preset error range of the target position.

[0352] In other embodiments, when the target position is the first position or the second position, the variable aperture 10 can also execute steps S1121 to S1124, and at this timeFIG. 30 The step S2141 in the method S2140 of "continuing to control the blade by the first mode" can refer to the step S1123 in the embodiment of "continuing to control the driving coil to be powered off" by the variable aperture.

[0353] It should be noted that in some scenarios, the target position can not be distinguished as the first position or the second position, and the first switching strategy can be the step S1121 to achieve the position stability of the carrier 21 and the blade 22 by the first magnetic attraction element 121 and the second magnetic attraction element 122, so as to achieve the driving coil 132 powered off locking, reduce the steady-state current, and achieve the power reduction. In other scenarios, when the position stability of the carrier 21 and the blade 22 cannot be completely achieved by only relying on the first magnetic attraction element 121 and the second magnetic attraction element 122 at the first position or the second position, the first switching strategy can be the step S1111 to ensure the position stability of the carrier 21 and the blade 22 by the driving coil 132 in the small current driving mode.

[0354] In other embodiments, when the blade 22 only includes the first position and the second position, that is, when the variable aperture 10 only has two gears, the first switching strategy can not rely on the first magnetic attraction element 121 and the second magnetic attraction element 122, and only by switching the closed-loop controller to an open-loop controller, the position stability of the carrier 21 and the blade 22 can be achieved while reducing the steady-state current of the variable aperture 10.

[0355] Please refer to FIG. 28 , FIG. 30 and FIG. 33 , FIG. 33 is FIG. 30 the specific flowchart of the control method in other embodiments. It should be noted that FIG. 33 the control method shown in the figure does not show the loop control.

[0356] In some embodiments, the control method S200 is provided, and before the first switching strategy is executed, the target position is judged, and then the specific execution of the first switching strategy is determined. The first switching strategy can include: the variable aperture 10 switches the closed-loop controller to an open-loop controller, or the closed-loop controller is a PID controller, and the variable aperture 10 switches the PID controller to a PD controller.

[0357] Specifically, the control method S200 can include the following specific steps:

[0358] Step S210, judging whether the target position is the first position or the second position.

[0359] If yes, the first switching strategy is the step S2111, and the step S2111 is executed, and if no, the first switching strategy is the step S2121, and the step S2121 is executed.

[0360] In step S2111, the variable aperture switches the closed-loop controller to the open-loop controller.

[0361] Since the blades 22 of the variable aperture 10 need to be fully opened at the first position, the variable aperture 10 needs to provide a larger driving force to overcome the mechanical resistance and friction. Similarly, at the second position, the blades 22 of the variable aperture 10 need to be tightly closed, which also requires a larger driving force to ensure the tight contact and position stability between the blades 22. The driving chip 133 of the variable aperture 10 will adjust the current output according to the actual opening and closing degree of the aperture hole 221 to ensure that the aperture motor can accurately position to the target position. However, at the first position and the second position, due to the particularity of mechanical movement, the driving chip 133 needs to output a larger current to overcome the mechanical resistance and friction, resulting in a sharp increase in the steady-state current of the variable aperture 10.

[0362] In this embodiment, the variable aperture 10 switches the closed-loop controller to the open-loop controller, which is designed to switch the control of the blades 22 by the driving chip 133 from the closed-loop control to the open-loop control. In this way, the driving chip 133 no longer adjusts the control of the blades 22 in real time according to the position information feedback of the blades 22, thereby saving the electric energy consumed by the driving chip 133 in processing the feedback information and achieving the reduction of power consumption.

[0363] In this embodiment, due to the arrangement of the first magnetic attraction member 121 and the second magnetic attraction member 122, the first magnetic attraction member 121 can ensure the stability of the carrier 21 in the thickness direction of the variable aperture 10 through the magnetic attraction force between the first magnetic attraction member 121 and the driving magnet 23, and the second magnetic attraction member 122 can ensure the stability of the carrier 21 in the radial direction of the variable aperture 10 through the magnetic attraction force between the second magnetic attraction member 122 and the driving magnet 23. Therefore, after the variable aperture 10 switches the closed-loop controller to the open-loop controller, the current of the driving coil 132 can be reduced, so that the driving coil 132 can realize the stability of the blades 22 at the first position or the second position through small current driving, thereby achieving the reduction of power consumption.

[0364] In this embodiment, in combination with the description of the first embodiment, the following can be understood: FIG. 23AWhen the blade 22 is in the first position, the second protrusion 213 of the carrier 21 abuts against the first side wall 1121, so the variable aperture 10 only needs to exert a force on the carrier 21 towards the first side wall 1121 to ensure the stability of the blade 22 in the first position. Therefore, after the variable aperture 10 switches the closed-loop controller to the open-loop controller, only a unidirectional current needs to be applied in the driving coil 132 to realize the stability of the blade 22 in the first position, which is conducive to reducing power consumption. Similarly, when the blade 22 is in the second position, the second protrusion 213 of the carrier 21 abuts against the second side wall 1122, so the variable aperture 10 only needs to exert a force on the carrier 21 towards the second side wall 1122 to ensure the stability of the blade 22 in the second position. Therefore, after the variable aperture 10 switches the closed-loop controller to the open-loop controller, only a unidirectional current needs to be applied in the driving coil 132 to realize the stability of the blade 22 in the second position, which is conducive to reducing power consumption.

[0365] It should be noted that after the variable aperture 10 switches to the open-loop controller, the variable aperture 10 can realize switching from large-current control to small-current control while ensuring the stability of the blade 22. The specific value of the small current can be calculated according to different application scenarios and requirements of the variable aperture 10, and the calculated value is used as a set value for the case where the variable aperture 10 switches to the open-loop controller.

[0366] In step S2112, it is determined whether the current position of the blade is within a preset error range of the target position.

[0367] If yes, step S2113 is performed, and if no, step S2114 is performed.

[0368] In step S2113, the variable aperture continues to control the blade through the open-loop controller.

[0369] It should be noted that, FIG. 30 The "variable aperture continues to control the blade through the first mode" in step S2141 can refer to the "variable aperture continues to control the blade through the open-loop controller" in step S2113 of the present embodiment.

[0370] In step S2114, the variable aperture switches the open-loop controller to the closed-loop controller and controls the blade to adjust to the target position through the closed-loop controller.

[0371] Step S2111 is continued.

[0372] In the present embodiment, by performing steps S2112 and S2114, the condition that the variable aperture 10 is not adjusted to the target position due to external interference during the adjustment of the variable aperture 10 can be coped with, so that the adjustment of the aperture hole 221 is more accurate and the risk resistance is strong.

[0373] The current position of the blade 22 can be determined by the Hall value measured by the Hall element, so as to determine whether the current position of the blade 22 is within a preset error range of the target position.

[0374] In step S2121, the PID controller is switched to the PD controller.

[0375] In the embodiment, during the process of controlling the carrier 21 to move relative to the base 11 to drive the blade 22 to move to the target position, the PID controller realizes accurate control of the position of the blade 22 by adjusting the three parameters of the proportional coefficient Kp, the integral coefficient Ki and the differential coefficient Kd. Since the adjustment of the integral coefficient Ki in the PID controller has saturation characteristics and hysteresis, the frictional force is accumulated during the rotation of the carrier 21 relative to the base 11, which is originally unnecessary to resist the frictional force. By closing the adjustment of the integral coefficient, i.e. closing the integral output, after the blade 22 moves to the target position, the PID controller is switched to the PD controller, so as to eliminate the disturbance force current for resisting the frictional force, thereby realizing the reduction of the steady-state current of the variable aperture 10, and further realizing the reduction of power consumption.

[0376] For reference, FIG. 34 and FIG. 35 the change of the steady-state current of the variable aperture 10 after the PID controller is switched to the PD controller is compared.

[0377] FIG. 34 is a schematic diagram of the steady-state current of the variable aperture 10 in some embodiments in which the variable aperture 10 always uses the PID controller to control the blade; FIG. 35 is a schematic diagram of the steady-state current of the variable aperture 10 in some embodiments in which the variable aperture 10 switches the PID controller to the PD controller at the target position. In the diagram, the horizontal coordinate represents the number of motors, i.e. the number of variable apertures 10, and the vertical coordinate represents the steady-state current of the variable aperture 10. Different curves correspond to different positions of the blade. The positions of the blade can include Z1, Z2, Z3 and Z4.

[0378] According to FIG. 34 and FIG. 35 , the average value of the steady-state current of the plurality of variable apertures 10 at each position of the blade is calculated, and Table 1 can be obtained. Table 1 is the average value of the steady-state current of the variable aperture 10 at different positions of the blade.

[0379] Table 1

[0380] Position of the blade FIG. 34 steady state current / mA for iris in the middle FIG. 35 steady state current / mA for iris in the middle Z1 57.42 15.45 Z2 20.36 6.74 Z3 15.11 5.22 Z4 33.05 7.12

[0381] As can be seen from Table 1, the variable aperture 10 switches the PID controller to the PD controller at multiple different positions of the vane, i.e. at multiple different target positions, which can greatly reduce the steady-state current in the variable aperture, thereby achieving reduced power consumption.

[0382] It should be noted that when the positions of the carrier 21 and the vane 22 can be stabilized by the first magnetic attraction member 121 and the second magnetic attraction member 122, the first switching strategy can adopt the step S1121 "variable aperture controls the driving coil to be powered off" in the method S1100. FIG. 31 When the positions of the carrier 21 and the vane 22 cannot be completely stabilized by the first magnetic attraction member 121 and the second magnetic attraction member 122, for example, in the case of strong external interference, the first switching strategy can adopt the step S2121 "variable aperture switches the PD controller to the PID controller" in the method S2100 to cooperate with the first magnetic attraction member 121 and the second magnetic attraction member 122 to stabilize the positions of the carrier 21 and the vane 22. FIG. 32

[0383] It should be noted that the method S200 shown in the embodiment FIG. 33 may not rely on the setting of the first magnetic attraction member 121 and the second magnetic attraction member 122 to stabilize the positions of the carrier 21 and the vane 22. At this time, the first switching strategy no longer includes the step S1121 "variable aperture controls the driving coil to be powered off" in the method S1100. FIG. 31

[0384] Step S2122, determine whether the current position of the vane is within a preset error range of the target position.

[0385] If yes, execute step S2123, and if no, execute step S2124.

[0386] Step S2123, the variable aperture continues to control the vane through the PD controller.

[0387] It should be noted that the "variable aperture continues to control the vane through the second mode" in step S2142 in the embodiment FIG. 30 may refer to the "variable aperture continues to control the vane through the PD controller" in step S2123 in the embodiment.

[0388] Step S2124, the variable aperture switches the PD controller to the PID controller and controls the vane to adjust to the target position through the PID controller.

[0389] Continue to execute step S2121.

[0390] ​​In the embodiment, by performing steps S2122 and S2124, the condition that the variable aperture 10 is not adjusted to the target position due to external interference can be coped with during the adjustment of the variable aperture 10, so that the adjustment of the aperture hole 221 is more accurate and has strong risk resistance.

[0391] The current position of the vane 22 can be determined by the Hall value measured by the Hall element, so as to determine whether the current position of the vane 22 is within the preset error range of the target position.

[0392] Please refer to FIG. 28 , FIG. 30 and FIG. 36 , FIG. 36 is FIG. 30 the specific flowchart of the control method in some other embodiments. It should be noted that FIG. 36 the control method shown in the figure does not show the loop control.

[0393] In some embodiments, the control method S300 is provided, and the first switching strategy can include that the closed-loop controller is a PID controller, and the variable aperture 10 switches the PID controller to a PD controller.

[0394] Specifically, the control method S300 can include the following specific steps:

[0395] Step S310, the variable aperture detects a first instruction.

[0396] Step S320, in response to the first instruction, the variable aperture controls the vane to adjust to a target position by a closed-loop controller.

[0397] The closed-loop controller can be a PID controller.

[0398] Step S330, the variable aperture switches the PID controller to a PD controller.

[0399] In the embodiment, without judging whether the current position is the first position, the PID controller can be switched to the PD controller to eliminate the disturbance force current resisting the friction force, so as to realize the reduction of the steady-state current of the variable aperture 10, and further realize the power consumption reduction.

[0400] Step S340, determine whether the current position of the vane is within the preset error range of the target position.

[0401] If yes, step S350 is performed, and if no, step S360 is performed.

[0402] Step S350, the variable aperture continues to control the vane by the PD controller.

[0403] It should be noted that FIG. 30The "the variable aperture continues to control the blades by the first mode" in step S2141 and the "the variable aperture continues to control the blades by the second mode" in step S2142 can refer to the "the variable aperture continues to control the blades by the PD controller" in step S350 of the embodiment.

[0404] In step S360, the variable aperture switches the PD controller to the PID controller, and controls the blades to adjust to the target position by the PID controller.

[0405] The step S330 is continued to be executed.

[0406] In the embodiment, by executing the steps S340 and S360, the condition that the variable aperture 10 is not adjusted to the target position due to external interference during the adjustment of the variable aperture 10 can be coped with, so that the adjustment of the aperture hole 221 is more accurate and the risk resistance is strong.

[0407] The current position of the blades 22 can be determined by the Hall value measured by the Hall element, so as to determine whether the current position of the blades 22 is within the preset error range of the target position.

[0408] It should be noted that one or more of the modules or units described in the present application can be implemented in software, hardware or a combination of both. When any of the above modules or units is implemented in software, the software exists in the form of computer program instructions and is stored in the memory. The processor can be used to execute the program instructions and implement the above method flow. The processor can include but is not limited to at least one of the following: central processing unit (CPU), microprocessor, digital signal processor (DSP), microcontroller unit (MCU), or artificial intelligence processor and other various computing devices running software, each of which can include one or more cores for executing software instructions to perform operations or processing. The processor can be built-in in SoC (system on chip) or application specific integrated circuit (ASIC), or be a separate semiconductor chip. In addition to the core for executing software instructions to perform operations or processing, the processor can further include necessary hardware accelerators, such as field programmable gate array (FPGA), PLD (programmable logic device), or logic circuit for implementing special logic operations.

[0409] When the modules or units described in the present application are implemented by hardware, the hardware can be any one or any combination of a CPU, a microprocessor, a DSP, an MCU, an artificial intelligence processor, an ASIC, a SoC, an FPGA, a PLD, a dedicated digital circuit, a hardware accelerator, or a non-integrated discrete device, which can run necessary software or be independent of software to perform the above method processes.

[0410] When the modules or units described in the present application are implemented by software, they can be implemented in the form of a computer program product entirely or partially. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are entirely or partially generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions can be transmitted from one website site, computer, server or data center to another website site, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes one or more available media sets. The available media can be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)) and the like.

[0411] Those of ordinary skill in the art can realize that the units and algorithm steps of the examples described in combination with the embodiments disclosed in the present application can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0412] Those of ordinary skill in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described system, device and unit can refer to the corresponding processes in the foregoing method embodiments, which will not be described here.

[0413] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other manners. For example, the described device embodiments are merely schematic. The division of the units is merely logical function division. There can be another division manner for the actual implementation, for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections can be indirect couplings or communication connections through some interfaces, devices or units, and can be in electrical, mechanical or other forms.

[0414] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, that is, can be located in one place, or can be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0415] In addition, each functional unit in the various embodiments of the present application can be integrated into a processing unit, or each unit can exist physically, or two or more units can be integrated into one unit.

[0416] If the functions are realized in the form of software function units and sold or used as independent products, they can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application essentially or the parts of the prior art that make contributions or parts of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes a number of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various media that can store program codes.

[0417] It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict, and any combination of features in different embodiments is within the protection scope of the present application, that is, the above-described multiple embodiments can be combined arbitrarily according to actual needs.

[0418] It should be noted that all the above-described drawings are exemplary illustrations of the present application, and do not represent the actual size of the product. The size ratio relationship between the components in the drawings is not limited to the actual product of the present application.

[0419] The above merely provides part of the embodiments and the implementation manners of the present application, and the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of the changes or replacements within the technical scope disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A variable aperture (10) characterized by, The variable aperture (10) comprises a base (11), a carrier (21), a plurality of blades (22), a driving coil (132), a driving magnet (23), a first magnetic attraction member (121) and a second magnetic attraction member (122); The carrier (21) is rotationally connected to the base (11), and the blades (22) are connected to the base (11) and the carrier (21), and a plurality of the blades (22) enclose an aperture hole (221); The base (11) comprises a bottom plate (111) and a first circumferential side plate (112), the first circumferential side plate (112) is connected to the circumferential edge of the bottom plate (111), the base (11) has a first mounting hole (116) penetrating the first circumferential side plate (112) along the radial direction of the variable aperture (10), the driving coil (132) and the driving magnet (23) are located at least partially in the first mounting hole (116), the driving coil (132) is mounted on the bottom plate (111), the driving magnet (23) is mounted on the carrier (21), the driving coil (132) and the driving magnet (23) are oppositely arranged along the thickness direction of the variable aperture (10), the driving coil (132) is used to drive the driving magnet (23) to drive the carrier (21) to rotate relative to the base (11) so as to change the aperture size of the aperture hole (221); The first magnetic attraction member (121) is mounted on the base (11) and located on the side of the driving coil (132) away from the driving magnet (23), and the first magnetic attraction member (121) and the driving magnet (23) are oppositely arranged along the thickness direction of the variable aperture (10); The second magnetic attraction member (122) is mounted on the base (11), and the second magnetic attraction member (122) and the driving magnet (23) are oppositely arranged at least partially along the radial direction of the variable aperture (10) within the rotation stroke of the carrier (21) relative to the base (11).

2. The variable aperture (10) of claim 1, characterized in that The base (11) further comprises a plurality of bearing tables (114), the bearing tables (114) and the first circumferential side plate (112) are arranged on the same side of the bottom plate (111), the bearing tables (114) are connected to the inner side of the first circumferential side plate (112), a plurality of the bearing tables (114) are arranged at intervals along the circumferential direction of the variable aperture (10), the bearing tables (114) are provided with first mounting grooves (1141) on the side away from the first circumferential side plate (112), and the bearing tables (114) have first bearing surfaces (1142) facing away from the bottom plate (111); The variable aperture (10) further comprises a plurality of rolling members (3), and one rolling member (3) is mounted in one first mounting groove (1141). The carrier (21) comprises a body (211) and a plurality of first protrusions (212), the body (211) is annular in structure, the body (211) has an inner annular surface (2111) and an outer annular surface (2112) arranged oppositely, the first protrusions (212) are connected to a side of the body (211) facing the bottom plate (111), and the first protrusions (212) are closer to the inner annular surface (2111) than to the outer annular surface (2112), a surface of the body (211) facing the bottom plate (111) abuts against the first bearing surface (1142), and a surface of the first protrusions (212) facing the outer annular surface (2112) abuts against the rolling element (3).

3. The variable aperture (10) of claim 2, characterized in that The variable aperture (10) is applied to an electronic device (1000), and the variable aperture (10) satisfies: wherein, is the magnetic attraction force of the first magnetic attraction member (121) to the driving magnet (23); is the total weight of the carrier (21), the driving magnet (23) and the vane (22); is the friction coefficient between the body (211) and the first bearing surface (1142); is the distance between the contact surface of the body (211) and the first bearing surface (1142) and the center of the carrier (21); is the magnetic attraction force of the second magnetic attraction member (122) to the driving magnet (23); is the friction coefficient between the first protrusion (212) and the rolling member (3); is the distance between the contact point of the first protrusion (212) and the rolling member (3) and the center of the carrier (21); is the disturbance torque of the internal components of the electronic device (1000) to the variable aperture (10); is the disturbance torque of the external environment to the variable aperture (10).

4. The variable aperture (10) according to any one of claims 1 to 3, characterized in that The number of the first mounting holes (116) is multiple, and multiple first mounting holes (116) are arranged at intervals along the circumference of the variable aperture (10); The number of the driving magnets (23), the driving coils (132) and the first magnetic attraction elements (121) is multiple, one driving magnet (23) and one driving coil (132) correspond to one first mounting hole (116), and one first magnetic attraction element (121) corresponds to one driving magnet (23).

5. The variable aperture (10) of claim 4, characterized in that Multiple first mounting holes (116) are uniformly arranged along the circumference of the variable aperture (10).

6. The variable aperture (10) according to any one of claims 1 to 3, 5, characterized in that The first magnetic attraction element (121) is long strip-shaped, and the first magnetic attraction element (121) is at least partially arranged opposite to the driving magnet (23) within the rotation stroke of the carrier (21) relative to the base (11).

7. The variable aperture (10) according to any one of claims 1 to 3, 5, characterized in that The variable aperture (10) further comprises a plurality of rolling elements (3), and the rolling elements (3) are located between the carrier (21) and the base (11). The number of the driving magnets (23) is multiple, and multiple driving magnets (23) are arranged at intervals along the circumference of the variable aperture (10), and the second magnetic attraction element (122) corresponds to one of the multiple driving magnets (23); Multiple rolling elements (3) comprise first rolling balls (31) and second rolling balls (32), the first rolling balls (31) are closer to the second magnetic attraction element (122) than the second rolling balls (32), the carrier (21) abuts against the second rolling balls (32) along the radial direction of the variable aperture (10), and the second rolling balls (32) abut against the base (11) along the radial direction of the variable aperture (10).

8. The variable aperture (10) according to any one of claims 1 to 3, 5, characterized in that The base (11) further comprises a second peripheral side plate (113) which is provided on the same side of the bottom plate (111) as the first peripheral side plate (112), the bottom plate (111) has a first through hole (1111), the second peripheral side plate (113) is connected to the periphery of the first through hole (1111) in a surrounding manner, the second peripheral side plate (113) forms a second through hole (1131) in a surrounding manner, the first through hole (1111), the second through hole (1131) and the aperture hole (221) are sequentially communicated, the first peripheral side plate (112), the second peripheral side plate (113) and the bottom plate (111) form a first mounting space (115) in a surrounding manner, and the first mounting hole (116) communicates the first mounting space (115); The carrier (21) comprises a body (211) and a second protrusion (213), the body (211) is rotationally connected to the base (11), the second protrusion (213) is connected to the outer peripheral side of the body (211), the second protrusion (213) is located in the first mounting hole (116), a part of the drive magnet (23) is mounted on the body (211), and another part of the drive magnet (23) is mounted on the second protrusion (213). The second magnetic attraction member (122) is located in the first mounting space (115) and is mounted on the surface of the second peripheral side plate (113) facing the first peripheral side plate (112).

9. The variable aperture (10) of claim 8, characterized in that The first mounting hole (116) has a first side wall (1121) and a second side wall (1122) on the first peripheral side plate (112), the first side wall (1121) and the second side wall (1122) are oppositely arranged along the circumference of the variable aperture (10), when the second protrusion (213) abuts against the first side wall (1121), the aperture hole (221) has a maximum aperture, and when the second protrusion (213) abuts against the second side wall (1122), the aperture hole (221) has a minimum aperture.

10. The variable aperture (10) according to any one of claims 1 to 3, 5, 9, characterized in that The second magnetic attraction member (122) is in a strip shape.

11. The variable aperture (10) of claim 10, characterized in that Along the circumference of the variable aperture (10), the width of both ends of the second magnetic attraction member (122) is greater than the width of the middle part of the second magnetic attraction member (122).

12. The variable aperture (10) according to any one of claims 1 to 3, 5, 9, 11, characterized in that The first mounting hole (116) comprises a first sub-hole (1161) and a second sub-hole (1162), the first sub-hole (1161) and the second sub-hole (1162) are communicated, the first sub-hole (1161) penetrates the first peripheral side plate (112) along the radial direction of the variable aperture (10), the second sub-hole (1162) penetrates the bottom plate (111) along the thickness direction of the variable aperture (10), the drive magnet (23) is located in the first sub-hole (1161), and the drive coil (132) is located in the second sub-hole (1162). The variable aperture (10) further comprises a circuit board (131) mounted on a side of the bottom plate (111) away from the carrier (21), the circuit board (131) covers the second sub-aperture (1162), the drive coil (132) is mounted on and electrically connected to the circuit board (131), and the first magnetic attraction member (121) is mounted on a side of the circuit board (131) away from the drive magnet (23).

13. The variable aperture (10) of claim 12, characterized in that The bottom plate (111) has a second mounting groove (1112) with an opening away from the drive magnet (23), the second mounting groove (1112) communicates with the second sub-aperture (1162), and the circuit board (131) is mounted in the second mounting groove (1112).

14. The variable aperture (10) according to any one of claims 1 to 3, 5, 9, 11, 13, characterized in that The base (11) has a plurality of first protruding columns (118) arranged at intervals along the circumference of the variable aperture (10). The carrier (21) has a plurality of second protruding columns (215) arranged at intervals along the circumference of the variable aperture (10), and the second protruding columns (215) are farther away from the center of the variable aperture (10) than the first protruding columns (118). The blade (22) has a rotating hole (222) and a sliding hole (223), the rotating hole (222) is circular, the rotating hole (222) is sleeved on the first protruding column (118), the sliding hole (223) is arc-shaped, the sliding hole (223) is sleeved on the second protruding column (215), and the carrier (21) drives the blade (22) to rotate along the first protruding column (118) through the second protruding column (215) to change the aperture size of the aperture hole (221).

15. The variable aperture (10) according to any one of claims 1 to 3, 5, 9, 11, 13, characterized in that The variable aperture (10) further comprises a decorative cover (4) having a fourth through hole (41), the decorative cover (4) is mounted on the base (11) and located on a side of the blade (22) away from the carrier (21), the fourth through hole (41) communicates with the aperture hole (221), and the aperture size of the fourth through hole (41) is greater than or equal to the maximum aperture size of the aperture hole (221).

16. The variable aperture (10) according to any one of claims 1 to 3, 5, 9, 11, 13, characterized in that During adjustment of the position of the blade (22) from a first target position to a second target position, the drive coil (132) is energized; When the position of the blade (22) is adjusted to the second target position, the drive coil (132) is de-energized.

17. A camera module (100) comprising: A lens assembly (20) and a variable aperture (10) as claimed in any one of claims 1 to 16 are included, and the variable aperture (10) is fixedly mounted on the light-entering side of the lens assembly (20).

18. An electronic device (1000), characterized by A camera module (100) as claimed in claim 17 and a housing (300) are included, and the camera module (100) is mounted on the housing (300).

19. A control method applied to a variable aperture (10), characterized in that, The variable aperture (10) comprises a base (11), a carrier (21), a plurality of blades (22), a drive coil (132), a drive magnet (23), and a magnetic attraction assembly (12). The carrier (21) is rotationally connected to the base (11), and the blades (22) are connected to the base (11) and the carrier (21), and a plurality of the blades (22) enclose an aperture (221); The driving coil (132) is mounted on the bottom plate (111) of the base (11), and the driving magnet (23) is mounted on the carrier (21), the driving coil (132) and the driving magnet (23) are oppositely arranged along the thickness direction of the variable aperture (10), and the driving coil (132) is used to drive the driving magnet (23) to drive the carrier (21) to rotate relative to the base (11) to change the aperture size of the aperture (221); The magnetic attraction assembly (12) is mounted on the base (11), and the magnetic attraction assembly (12) is oppositely arranged with the driving magnet (23), wherein the magnetic attraction assembly (12) comprises a second magnetic attraction element (122), and the second magnetic attraction element (122) is at least partially oppositely arranged with the driving magnet (23) along the radial direction of the variable aperture (10) within the rotation stroke of the carrier (21) relative to the base (11); The method comprises: The variable aperture (10) detects a first instruction, and the first instruction is used to instruct to adjust the blades (22) to a target position; In response to the first instruction, the variable aperture (10) controls the blades (22) to adjust to the target position through a closed-loop controller and executes a first switching strategy; The first switching strategy comprises: The closed-loop controller is a proportional-integral-derivative (PID) controller, and the variable aperture (10) switches the PID controller to a proportional-derivative (PD) controller; Or, The variable aperture (10) switches the closed-loop controller to an open-loop controller.

20. The method of claim 19, wherein, Before the variable aperture (10) executes the first switching strategy, the method further comprises: The variable aperture (10) determines whether the target position corresponds to a first position or a second position, wherein when the target position is at the first position, the aperture (221) has a maximum aperture, and when the target position is at the second position, the aperture (221) has a minimum aperture; If not, the first switching strategy comprises that the closed-loop controller is the PID controller, and the variable aperture (10) switches the PID controller to the PD controller; If yes, the first switching strategy comprises: The closed-loop controller is the PID controller, and the variable aperture (10) switches the PID controller to the PD controller; Or, The variable aperture (10) switches the closed-loop controller to the open-loop controller.

21. The method of claim 20, wherein, After the variable aperture (10) switches the closed-loop controller to the open-loop controller, the method further comprises: Determining whether the current position of the blades (22) is within a preset error range of the target position; If yes, the variable aperture (10) continues to control the blades (22) through the open-loop controller. If not, the variable aperture (10) switches the open-loop controller to the closed-loop controller, and controls the blade (22) to adjust to the target position through the closed-loop controller; The variable aperture (10) switches the closed-loop controller to an open-loop controller.

22. The method of claim 20 or 21, wherein, After the first switching strategy is executed, the method further comprises: In the case where the first instruction is not detected, when the timing duration of the variable aperture (10) reaches a preset duration, it is determined whether the current position of the blade (22) is the first position or the second position; If not, the variable aperture (10) continues to control the blade (22) through the PD controller; If yes, the variable aperture (10) continues to control the blade (22) through the open-loop controller.

23. An electronic device (1000) characterized by: Comprise: One or more processors; One or more memories; And one or more computer programs, wherein the one or more computer programs are stored in the one or more memories, the one or more computer programs comprise instructions, when the instructions are executed by the one or more processors, make the electronic device (1000) execute the method as claimed in any one of claims 19-22.

24. A computer-readable storage medium, characterized in that, The storage medium has a program or instruction stored therein, when the program or instruction is executed, the method as claimed in any one of claims 19-22 is realized.

25. A computer program product, characterised in that, The computer program product has a program or instruction stored therein, when the program or instruction is executed, the method as claimed in any one of claims 19-22 is realized.

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