Variable aperture, control method, camera module and electronic equipment

Abstract

The invention provides a variable aperture, a control method, a camera module and electronic equipment. The iris ring 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, and through the design of the first magnetic attraction piece and the second magnetic attraction piece, when the blades are located at the set target positions, the driving coil can be powered off, and the blades can be stably kept at the target positions, so that the blades are prevented from being damaged. Therefore, the power-off locking of the blade is realized, the current power consumption of the variable aperture is reduced, and the resolution of the camera module is improved.

Description

Technical Field

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

[0002] Usually, a camera module includes a variable aperture and a lens, and the variable aperture is installed on the light-entering side of the lens. The current consumption of the variable aperture will affect the characteristics of the lens, and thus affect the resolution of the entire camera module.

[0003] However, the current power consumption of the variable aperture is relatively large, resulting in a decrease in the resolution of the camera module. Summary of the invention

[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 drive coil, a drive magnet, a first magnetic member and a second magnetic member. By designing the first magnetic member and the second magnetic member, when the position of the blade is at a set target position, the drive coil can be powered off, and the blade can be stably maintained at the target position, thereby realizing power-off locking of the blade, reducing the current power consumption of the variable aperture, and being conducive to improving the resolution of the camera module.

[0005] In the 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 rotatably connected to the base, the blades are connected to the base and the carrier, and the plurality of blades surround an aperture hole; the base includes a bottom plate and a first peripheral side plate, 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, 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, the driving magnet is mounted on the carrier, the driving coil and the driving magnet are arranged relative to each other 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 to change the aperture size of the aperture hole; the first magnetic attraction member is mounted on the base and is located on the side of the driving coil facing away from the driving magnet, the first magnetic attraction member and the driving magnet are arranged relative to each other 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 arranged relative to each other along the radial direction of the variable aperture.

[0006] In the present application, the aperture adjustment of the aperture hole is achieved through a variable aperture, thereby achieving control over the amount of light entering, depth of field, etc., so that the camera module can be adaptively adjusted 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 overlaps 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, which is conducive to the thinning design of the variable aperture. In addition, the setting of the first mounting hole also realizes 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, by setting the first mounting hole, an installation space is provided for the driving magnet and the driving coil, which can not only improve the installation convenience of the driving magnet and the driving coil, but also avoid the first peripheral side plate from forming an obstacle to the installation of the driving coil and the driving magnet, and can reduce the radial size of the base, thereby reducing the radial size of the variable aperture, which is conducive to the miniaturized design of the variable aperture.

[0009] In the present application, since the first magnetic member and the driving magnet are arranged relative to each other along the thickness direction of the variable aperture, the first magnetic member can generate a magnetic attraction force with the driving magnet in the Z-axis direction, so that the carrier can be stably connected to the base in the Z-axis direction. Since the second magnetic member and the driving magnet are arranged relative to each other along the radial direction of the variable aperture, the second magnetic member can generate a lateral magnetic attraction 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 process of changing the aperture hole and after the aperture hole is adjusted, the first magnetic member and the second magnetic member can both strengthen the connection between the carrier and the base through the magnetic attraction force with 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 component and the second magnetic component, the current of the driving coil can be cut off after the aperture hole is adjusted. The stability of the carrier and the blades can be ensured by the first magnetic component and the second magnetic component to ensure the stability of the aperture of the aperture, achieve power-off locking, reduce the steady-state current of the variable aperture, and achieve power consumption reduction, which is beneficial to improve the resolution of the camera module when the variable aperture is applied to the camera module.

[0010] In some possible implementations, the base also includes a plurality of bearing platforms, which are protruding from the same side of the bottom plate as the first circumferential side plate, and are connected to the inner side of the first circumferential side plate. The plurality of bearing platforms are arranged at intervals along the circumference of the variable aperture, and a first mounting groove is provided on the side of the bearing platform away from the first circumferential side plate, and the bearing platform has a first bearing surface facing away from the bottom plate; the variable aperture also includes a plurality of rolling elements, and one rolling element is correspondingly mounted in one first mounting groove; the carrier includes a main body and a plurality of first protrusions, the main body is an annular structure, the main body has an inner annular surface and an outer annular surface arranged opposite to each other, the first protrusion is connected to the side of the main body facing the bottom plate, and the first protrusion is closer to the inner annular surface than the outer annular surface, the surface of the main body facing the bottom plate abuts the first bearing surface, and the surface of the first protrusion facing the outer annular surface abuts the rolling element.

[0011] In this implementation, the surface of the body facing the bottom plate can abut against the first bearing surface, that is, 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, it can avoid that the contact surface between the body and the bearing platform is too large and causes excessive friction. Such a design can reduce the friction resistance of the base to the carrier while ensuring that the base provides relatively stable support for the carrier, which is conducive to the 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 element, and the setting of the rolling element enables the carrier to rotate relative to the base.

[0012] Among them, among the multiple rolling parts, since the first ball is closer to the second magnetic part than the second ball, under the action of the second magnetic part, the carrier moves toward the direction of the second ball driven by the driving magnet, so that the carrier abuts against the second ball along the radial direction of the variable aperture, and the second ball abuts against the base along the radial direction of the variable aperture. This not only achieves the stability of the carrier in the radial direction of the variable aperture, but also helps to improve the contact stability between the carrier and the second ball, and is beneficial to provide rolling friction for the carrier through the second ball, so as to better realize the rotation of the carrier relative to the base.

[0013] In some possible implementations, the variable aperture is applied to electronic devices, 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] Among them, F z is the magnetic attraction of the first magnetic attraction 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 between the body and the first bearing surface and the center of the carrier; F c is the magnetic attraction of the second magnetic attraction member to the driving magnet; μ2 is the friction coefficient between the first convex block and the rolling member; L2 is the distance between the contact point between the first convex block and the rolling member and the center of the carrier; F r1 F is the disturbance torque of the internal components of the electronic device on the variable aperture; r2 is the external disturbance torque on the variable aperture.

[0017] In this implementation, through the above formula design, in the process of changing the aperture hole, the first magnetic suction member and the second magnetic suction member can generate a stable magnetic suction force with the driving magnet, thereby providing the carrier with a torque in the thickness direction and lateral direction of the variable aperture to overcome the external disturbance of the variable aperture, so that the carrier can stably rotate relative to the base, and the aperture of the aperture hole can be stably switched. In addition, through the above formula design, after the aperture hole is adjusted, the first magnetic suction member can generate a strong magnetic suction force in the Z-axis direction with the driving magnet, and the second magnetic suction member can generate a strong lateral magnetic suction force with the driving magnet, so that the carrier can be stably overlapped on the bearing platform of the base in the Z-axis direction, and the carrier can stably abut against the rolling member in the radial direction of the variable aperture. At this time, there is no need to control the stability of the carrier through the driving coil. Therefore, the steady-state current of the variable aperture can be reduced by powering off the driving coil, thereby reducing power consumption, which is beneficial to improve the resolution of the camera module when the variable aperture is applied to the camera module.

[0018] In some possible implementations, there are multiple first mounting holes, and the multiple first mounting holes are arranged at circumferential intervals along the variable aperture; there are multiple driving magnets, driving coils and first magnetic components, and one driving magnet and one driving coil correspond to one first mounting hole, and one first magnetic component corresponds to one driving magnet.

[0019] In this implementation, the number of first magnetic components can be the same as the number of driving magnets, and one first magnetic component is set corresponding to one driving magnet to ensure that in each area where the driving magnet is set, the first magnetic component can improve the connection stability between the carrier and the base in the Z-axis direction by magnetic attraction with the driving magnet.

[0020] In some possible implementations, the plurality of first mounting holes are evenly spaced and arranged along the circumference of the variable aperture.

[0021] In the implementation, since the plurality of first mounting holes can be evenly spaced along the circumference of the variable aperture, the driving magnet and the driving coil can also be evenly spaced along the axial direction of the variable aperture. Thus, the stability of the rotation of the carrier relative to the base can be improved through the cooperation of the driving magnet and the driving coil.

[0022] In some possible implementations, the first magnetic member is in the shape of an elongated strip, and within the rotational travel of the carrier relative to the base, the first magnetic member and the driving magnet are at least partially disposed opposite each other.

[0023] In this implementation, within the rotational range of the carrier relative to the base, the first magnetic attraction component is at least partially arranged opposite to the driving magnet, so that within the rotational range of the carrier relative to the base, the first magnetic attraction component can provide the carrier with adsorption force in the Z-axis direction, thereby making the carrier more stable in the Z-axis direction throughout the entire rotational range.

[0024] In some possible implementations, the variable aperture further includes multiple rolling members, which are located between the carrier and the base; there are multiple driving magnets, which are arranged at intervals along the circumference of the variable aperture, and the second magnetic member is arranged corresponding to one of the multiple driving magnets; the multiple rolling members include a first ball and a second ball, the first ball is closer to the second magnetic member than the second ball, the carrier abuts the second ball along the radial direction of the variable aperture, and the second ball abuts the base along the radial direction of the variable aperture.

[0025] In this implementation, the second magnetic attraction member is only arranged corresponding to one of the multiple driving magnets, so that the carrier is only subjected to lateral magnetic attraction in one direction, which is beneficial to the stability of the carrier in the radial direction of the variable aperture. Among the multiple rolling members, since the first ball is closer to the second magnetic attraction member than the second ball, under the action of the second magnetic attraction member, the carrier moves toward the direction of the second ball driven by the driving magnet, so that the carrier abuts against the second ball in the radial direction of the variable aperture, and the second ball abuts against the base in the radial direction of the variable aperture, so that the stability of the carrier in the radial direction of the variable aperture is achieved, and it is also beneficial to improve the contact stability between the carrier and the second ball, and it is beneficial to provide rolling friction for the carrier through the second ball, so as to better realize the rotation of the carrier relative to the base.

[0026] In some possible implementations, the base also includes a second circumferential side plate, which is protruded on the same side of the bottom plate as the first circumferential side plate, the bottom plate has a first through hole, the second circumferential side plate is circumferentially connected to the periphery of the first through hole, the second circumferential side plate is arranged to form a second through hole, the first through hole, the second through hole and the aperture hole are connected in sequence, the first circumferential side plate, the second circumferential side plate and the bottom plate are arranged to form a first installation space, and the first installation hole is connected to the first installation space; the carrier includes a main body and a second protrusion, the main body is rotatably connected to the base, the second protrusion is connected to the outer peripheral side of the main body, the second protrusion is located in the first installation hole, a part of the driving magnet is installed on the main body, and the other part of the driving magnet is installed on the second protrusion; the second magnetic attraction component is located in the first installation space and is installed on the surface of the second circumferential side plate facing the first circumferential side plate.

[0027] In this implementation, due to the structural setting of the base, the carrier can be partially installed in the first installation space and mounted on the outer side of the second peripheral side plate. Such a design is conducive to improving the stability of the carrier installed on the base and improving space utilization.

[0028] In some possible implementations, the first mounting hole has a first side wall and a second side wall on the first peripheral side plate, and the first side wall and the second side wall are arranged opposite to each other along the circumference of the variable aperture, and when the second protrusion abuts against the first side wall, the aperture hole has a maximum aperture, and when the second protrusion abuts against the second side wall, the aperture hole has a minimum aperture.

[0029] In this implementation, the first side wall and the second side wall can form a limit for the second protrusion, which can prevent the blade from being damaged when the carrier drives the blade to rotate. In other words, when the second protrusion abuts the first side wall or the second side wall, there is a gap between the second protrusion and both ends of the sliding hole. Such a design can prevent the second protrusion from driving the blade to rotate excessively, thereby preventing the blade from being damaged due to excessive force.

[0030] In some possible implementations, the second magnetic member is in the shape of an elongated strip, and within the rotational travel of the carrier relative to the base, the second magnetic member and the driving magnet are at least partially disposed opposite each other.

[0031] In this implementation, within the rotational stroke of the carrier relative to the base, the second magnetic attraction component is at least partially arranged opposite to the driving magnet, so that within the rotational stroke of the carrier relative to the base, the second magnetic attraction component can provide lateral adsorption force for the carrier, thereby making the carrier more stable in the radial direction of the variable aperture throughout the entire rotational stroke.

[0032] In some possible implementations, along the circumference of the variable aperture, the widths of both ends of the second magnetic member are greater than the width of the middle portion of the second magnetic member.

[0033] In this implementation, since the width of the two ends of the second magnetic attraction member is greater than the width of the middle area, the restoring torque on the carrier generated by the magnetic attraction force of the second magnetic attraction member on the driving magnet during the rotation of the carrier relative to the base can be reduced, thereby reducing the rotational resistance of the carrier relative to the base, which is beneficial to saving power consumption.

[0034] In some possible implementations, the first mounting hole includes a first sub-hole and a second sub-hole, the first sub-hole and the second sub-hole are connected, the first sub-hole passes through the first peripheral plate along the radial direction of the variable aperture, and the second sub-hole passes through 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 also includes a circuit board, the circuit board is installed on the side of the bottom plate facing 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 component is installed on the side of the circuit board facing away from the driving magnet.

[0035] In this implementation, the setting of the first mounting hole provides installation space for the driving magnet and the driving coil, which can not only improve the installation convenience of the driving magnet and the driving coil, but also avoid the first peripheral side plate from forming an installation obstacle to the driving coil and the driving magnet, and can reduce the radial size of the base, thereby reducing the radial size of the variable aperture, which is conducive to the miniaturized design of the variable aperture.

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

[0037] In this implementation, since the size of the second part of the second sub-hole is larger than the first part, the drive coil and the first solder pad can be exposed at the same time in the second part of the second sub-hole, providing electrical connection space for the drive coil, which is beneficial to 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 groove, the opening of the second mounting groove faces away from the driving magnet, the second mounting groove is connected to the second sub-hole, and the circuit board is mounted in the second mounting groove.

[0039] In this implementation, the circuit board can be embedded in the bottom plate through the design of the second mounting groove, thereby reducing the space occupied by the circuit board, which is conducive to realizing a lightweight design of the variable aperture.

[0040] The circuit board may be provided with a third mounting groove, the opening of the third mounting groove may face away from the driving coil, and the first magnetic attraction member may be located in the third mounting groove.

[0041] In this implementation, the design of the third mounting groove allows the first magnetic component to be embedded in the circuit board, which can reduce the space occupied by the first magnetic component and is conducive to realizing a lightweight design of the variable aperture.

[0042] In some possible implementations, the base has a plurality of first bosses, which are arranged at intervals along the circumference of the variable aperture; the carrier has a plurality of second bosses, which are arranged at intervals along the circumference of the variable aperture, and the second bosses are farther away from the center of the variable aperture than the first bosses; the blade has a rotating hole and a sliding hole, the rotating hole is circular, and the rotating hole is sleeved on the first boss, and the sliding hole is arc-shaped, and the sliding hole is sleeved on the second boss, and the carrier is used to drive the blade to rotate along the first boss through the second boss to change the aperture size of the aperture.

[0043] In this implementation, since the base is fixed and the carrier rotates relative to the base, the position of the first protrusion is fixed, and the second protrusion moves relative to the base together with the carrier. Therefore, when the carrier rotates relative to the base, the second protrusion moves in the sliding hole, and drives the blades to rotate around the first protrusion by acting on the inner wall of the sliding hole, thereby changing the overlapping surface between two adjacent blades, and then changing the aperture size of the aperture hole formed by multiple blades.

[0044] In some possible implementations, the variable aperture further includes a decorative cover having a fourth through hole, the decorative cover is mounted on the base and located on a side of the blade away from the carrier, the fourth through hole is connected to the aperture hole, and the aperture of the fourth through hole is greater than or equal to the maximum aperture of the aperture hole.

[0045] In this implementation, 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 will not block the aperture hole. The decorative cover can not only play an external decoration role, but also play a dust protection role.

[0046] In some possible implementations, the drive coil is energized during the process of adjusting the position of the blade from the first target position to the second target position; and the drive coil is deenergized when the position of the blade is adjusted to the second target position.

[0047] In this implementation, since the static time of the blades in the variable aperture is much longer than the moving time of the blades, that is, the aperture diameter changes in less time, the stable current of the variable aperture can be greatly reduced by cutting off the power to the drive coil after the blades are adjusted into position, thereby reducing power consumption, which is beneficial for improving the resolution of the camera module when the variable aperture is applied to the camera module.

[0048] In this implementation, since the first magnetic member and the driving magnet are arranged relative to each other along the thickness direction of the variable aperture, the first magnetic member 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. Since the second magnetic member and the driving magnet are arranged relative to each other along the radial direction of the variable aperture, the second magnetic member 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, after the blades are adjusted to the target position, the current of the driving coil is cut off, and the stability of the carrier and the blades can be guaranteed through the first magnetic member and the second magnetic member to ensure the stability of the aperture hole, achieve power-off locking, reduce the steady-state current of the variable aperture, and achieve power reduction, which is beneficial to improve the resolution of the camera module when the variable aperture is applied to the camera module.

[0049] In a second aspect, the present application provides a camera module, which includes a lens assembly and any variable aperture as described in the first aspect, wherein the variable aperture is fixedly mounted on the light incident side of the lens assembly.

[0050] In the present application, the variable aperture is designed to reduce the steady-state current of the variable aperture, thereby reducing the power consumption of the camera module, which is beneficial to improving the overall resolution of the camera module and further improving the imaging quality of the camera module.

[0051] In a third aspect, the present application provides an electronic device, comprising a housing and a camera module as in the second aspect, wherein the camera module is mounted on the housing.

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

[0053] In a fourth aspect, the present application provides a control method. The variable aperture includes a base, a carrier, a plurality of blades, a driving coil, a driving magnet, and a magnetic attraction component; the carrier is rotatably connected to the base, the blades are connected to the base and the carrier, and the plurality of blades surround the aperture hole; the driving coil is mounted on the bottom plate, the driving magnet is mounted on the carrier, the driving coil and the driving magnet are arranged relative to each other 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 to change the aperture size of the aperture hole; the magnetic attraction component is mounted on the base, and the magnetic attraction component and the driving magnet are arranged relative to each other; the method includes:

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

[0055] In response to the first instruction, the variable aperture controls the blades to be adjusted to the target position through the closed-loop controller, and executes the first switching strategy;

[0056] The first switching strategy includes:

[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 achieved through a variable aperture, thereby achieving control over the amount of light entering, depth of field, etc., so that the camera module can be adaptively adjusted 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.

[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 reducing power consumption and improving the resolution of the camera module.

[0062] In some possible implementations, 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 when the target position is at the first position, the aperture hole has a maximum aperture, and when the target position is at the second position, the aperture hole has a minimum aperture;

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

[0065] If yes, then 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 this implementation, the variable aperture switches the closed-loop controller to an open-loop controller. This design allows the driver chip to switch the control of the blades from closed-loop control to open-loop control. In this way, the driver chip no longer adjusts the control of the blades based on the blade position information feedback in real time, thereby saving the electrical energy consumed by the driver chip in processing feedback information and reducing power consumption.

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

[0071] In this implementation, since the second protrusion of the carrier abuts against the first side wall when the blade is in the first position, the variable aperture only needs to apply a force toward the first side wall to the carrier to ensure the stability of the blade in the first position. Therefore, after the variable aperture 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 to achieve the stability of the blade in the first position, which is conducive to reducing power consumption. Similarly, when the blade is in the second position, the second protrusion of the carrier abuts against the second side wall. Therefore, the variable aperture only needs to apply a force toward the second side wall to the carrier to ensure the stability of the blade in the second position. Therefore, after the variable aperture 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 to achieve the stability of the blade in the second position, which is conducive to reducing power consumption.

[0072] In this implementation, in the process of controlling the movement of the carrier relative to the base to drive the blade to move to the target position, the PID controller adjusts the three parameters of the proportional coefficient Kp, the integral coefficient Ki and the differential coefficient Kd to achieve precise control of the blade position. Since the adjustment of the integral coefficient Ki in the PID controller has saturation characteristics and hysteresis, the friction-resisting force current that is not originally needed is accumulated due to the existence of friction during the rotation of the carrier relative to the base. After the blade moves to the target position, the adjustment of the integral coefficient is turned off, that is, the integral output is turned off, and the PID controller is switched to a PD controller, thereby eliminating the friction-resisting force current, so as to reduce the steady-state current of the variable aperture, thereby reducing power consumption.

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

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

[0075] If so, the iris diaphragm continues to control the blades via the open-loop controller;

[0076] If not, the variable aperture switches the open-loop controller to a closed-loop controller, and controls the blades 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, during the adjustment process of the variable aperture, the situation where the variable aperture is not adjusted to the target position due to external interference can be dealt with, thereby making the adjustment of the aperture hole more precise and having a strong risk resistance.

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

[0080] In the case where the first instruction is not detected, when the timing duration of the variable aperture reaches a preset duration, determining whether the current position of the blade is the first position or the second position;

[0081] If not, the iris continues to control the blades through the PD controller;

[0082] If so, the iris diaphragm continues to control the blades via an open loop controller.

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

[0084] In a fifth aspect, the present application provides an electronic device, comprising: 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, and when the instructions are executed by the one or more processors, the electronic device executes any method as described in the fourth aspect.

[0085] In a sixth aspect, the present application provides a computer-readable storage medium. The storage medium stores a program or instruction, and when the program or instruction is executed, any method in the fourth aspect is implemented.

[0086] In a seventh aspect, the present application provides a computer program product. The computer program product stores a program or instruction, and when the program or instruction is executed, any method in the fourth aspect is implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0087] Figure 1A is a schematic diagram of the structure of an electronic device provided in some embodiments of the present application;

[0088] Figure 1B yes Figure 1A A schematic diagram of a partial structural breakdown of the electronic device shown;

[0089] Figure 2 yes Figure 1A The electronic device shown is a schematic diagram of a portion of the structure in some embodiments after being cut along line AA;

[0090] Figure 3 yes Figure 2 A schematic diagram of the structure of a variable aperture in an electronic device in some embodiments;

[0091] Figure 4 yes Figure 3 The variable aperture is shown as a partial structural exploded schematic diagram in some embodiments;

[0092] Figure 5A yes Figure 3 The schematic diagram of the structure of the base in the variable aperture in some embodiments is shown;

[0093] Figure 5B yes Figure 5A A schematic diagram of the structure of the base shown in another viewing angle;

[0094] Figure 6 yes Figure 5A A schematic diagram of the structure of the base shown in another viewing angle;

[0095] Fig. 7A yes Figure 5A The illustrated base is a partial exploded schematic diagram of the structure in some embodiments;

[0096] Figure 7B yes Figure 5A The shown schematic diagram of a portion of the structure of some embodiments after the base is cut along line BB;

[0097] Figure 8 yes Figure 5A The base shown is a schematic diagram of the structure of installing some components in some embodiments;

[0098] Fig. 9 yes Figure 8 An exploded view of a portion of the structure shown in some embodiments;

[0099] Fig. 10A yes Figure 8 A schematic diagram of the structure shown in another viewing angle;

[0100] Fig. 10B yes Figure 8 A schematic diagram of the structure shown in another viewing angle;

[0101] Fig.11A yes Figure 8 The structure shown is a schematic diagram of the structure in some embodiments after being cut along line CC;

[0102] Fig. 11B yes Figure 8 The structure shown is a schematic diagram of the structure in some embodiments after being cut along line DD;

[0103] Fig. 12A yes Figure 3 A schematic diagram of the structure of a carrier in a variable aperture in some embodiments;

[0104] Fig. 12B yes Fig. 12A A schematic diagram of the structure of the carrier shown in another viewing angle;

[0105] Fig.13 yes Fig. 12A A schematic diagram of partial structural decomposition of the carrier in some embodiments;

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

[0107] Fig.15A yes Fig. 12A The structure diagram of the carrier shown in some embodiments is to install the driving magnet;

[0108] Fig. 15B yes Fig.15A A schematic diagram of the structure shown in another viewing angle;

[0109] Fig.16 yes Fig.15A The structure shown is a schematic diagram of the structure in some embodiments after the structure is cut along line FF;

[0110] Fig.17 yes Fig.15A The structure shown is Figure 8 The structure shown is a schematic diagram of the structure in which the structure is assembled in some embodiments;

[0111] Fig.18 yes Fig.17 The structure shown is a schematic diagram of the structure in some embodiments after being cut along line GG;

[0112] Fig.19A yes Fig.17 The structure shown is a schematic diagram of the structure in some embodiments after being cut along line H1-H1;

[0113] Fig.19B yes Fig.17 The structure shown is a schematic diagram of the structure in some embodiments after being cut along line H2-H2;

[0114] Fig. 20A yes Fig.17 The structure shown is a schematic diagram of the structure in some embodiments after being cut along line I1-I1;

[0115] Fig. 20B yes Fig.17 The structure shown is a schematic diagram of the structure in some embodiments after being cut along line I2-I2;

[0116] Fig.21A yes Figure 3 A schematic diagram of the structure of a gasket in a variable aperture in some embodiments is shown;

[0117] Fig. 21B yes Fig.21A The gasket shown is installed on Fig.17 A schematic diagram of the structure shown;

[0118] Fig.22A yes Figure 3 A schematic diagram of the structure of multiple blades in a variable aperture in some embodiments;

[0119] Fig. 22B yes Fig.22A A schematic diagram of the structure of one of the plurality of blades in some embodiments;

[0120] Fig.23A yes Fig.22A The plurality of blades shown are mounted on Fig. 21B A schematic diagram of the structure shown;

[0121] Fig. 23B yes Fig.23A A schematic diagram of the structure shown in another viewing angle;

[0122] Fig.24A yes Fig.23A The structure shown is a schematic diagram of the structure in some embodiments after being cut along line JJ;

[0123] Fig. 24B yes Fig.23A The structure shown is a schematic diagram of the structure in some embodiments after being cut along line KK;

[0124] Fig.25 yes Figure 3 The schematic diagram of the structure of the decorative cover in the variable aperture in some embodiments is shown;

[0125] Fig.26 yes Fig.25 The structure of the decorative cover shown in some embodiments is an exploded schematic diagram;

[0126] Fig. 27 yes Fig.25 The structure diagram of the decorative cover in one side embodiment after being cut along line LL shown;

[0127] Fig.28 yes Figure 3 The structure schematic diagram of the variable aperture after being cut along line MM in some embodiments;

[0128] Fig.29A yes Figure 3The structure schematic diagram of the variable aperture in some embodiments after being cut along line N1-N1;

[0129] Fig.29B yes Figure 3 The structure schematic diagram of the variable aperture after being cut along line N2-N2 in some embodiments;

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

[0131] Fig.31 yes Fig.30 A schematic diagram of a specific flow chart of the control method in some embodiments shown;

[0132] Fig.32 is a schematic diagram of steady-state current when a variable aperture uses a closed-loop controller to maintain a blade position in some embodiments;

[0133] Fig.33 yes Fig.30 A schematic diagram of a specific flow chart of the control method in other embodiments;

[0134] Fig.34 is a schematic diagram of steady-state current when the variable aperture always uses a PID controller to control the blades in some embodiments;

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

[0136] Fig.36 yes Fig.30 Detailed flowchart of the control method in some further embodiments is shown. DETAILED DESCRIPTION

[0137] The embodiments of the present application are described below in conjunction with the 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 clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. "Multiple" means at least two.

[0139] The directional terms mentioned in the embodiments of the present application, such as "upper", "lower", "inside", "outside", "top", "bottom", "side", etc., are only references to the directions of the drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present application, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0140] In the embodiments of the present application, the limitations of the relative position relationship mentioned, such as parallel, vertical, aligned, etc. These limitations are all for the current state of the art, rather than absolutely strict limitations, and a small amount of deviation is allowed, and it is possible to be approximately parallel, approximately vertical, approximately aligned, etc. For example, A and B are parallel, which means that A and B are parallel or approximately parallel, and the angle between A and B can be between 0 and 10 degrees. For example, A and B are perpendicular, which means that A and B are perpendicular or approximately perpendicular, and the angle between A and B can be between 80 and 100 degrees.

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

[0142] The variable aperture structure in the current mainstream mobile phone camera modules is glued to the shoulder of the lens. The power consumption of the variable aperture constantly affects the characteristics of the lens, and thus affects the resolution of the entire mobile phone camera module. With the increasing demand for miniaturized design of the drive magnet and drive coil in the variable aperture, while ensuring that the drive magnet and drive coil have sufficient driving force, the power consumption of the drive coil and drive chip has a further impact on the resolution of the lens and 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 impact on the resolution of the lens and camera module.

[0144] Next, the specific structure of the electronic device 1000 provided in this application is introduced.

[0145] See also Figure 1A and Figure 1B , Figure 1A is a schematic diagram of the structure of the electronic device 1000 provided in some embodiments of the present application; Figure 1B yes Figure 1A A schematic diagram of a partial structural explosion of the electronic device 1000 is shown.

[0146] In some embodiments, the electronic device 1000 may be a mobile phone, a tablet personal computer, a laptop computer, a smart screen, 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, and other devices with a camera function. Figure 1A In the embodiment, the electronic device 1000 is described as a mobile phone. Of course, other types of electronic devices 1000 may also adopt a similar structure, which will not be described in detail below.

[0147] Understandably, Figure 1A and Figure 1B Only some components of the electronic device 1000 are schematically shown, and the actual shapes, sizes, positions and structures of these components are not subject to the present invention. Figure 1A and Figure 1B The electronic device 1000 may also include Figure 1A and Figure 1B More or fewer parts.

[0148] In some embodiments, the electronic device 1000 may include a camera module 100, a screen 200, and a housing 300. The screen 200 is used to display images, videos, etc. The screen 200 may include a light-transmitting panel 2001 and a display screen 2002. The light-transmitting panel 2001 and the display screen 2002 are stacked and fixedly connected. The light-transmitting panel 2001 is mainly used 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 may 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 or an active-matrix organic light-emitting diode (AMOLED) display screen, a mini organic light-emitting diode (MID) display screen, a micro organic light-emitting diode (MID) display screen, a micro organic light-emitting diode (MID) display screen, a quantum dot light emitting diode (QLED) display screen, a liquid crystal display (LCD), etc.

[0149] Exemplarily, the housing 300 is used to protect the internal electronic components of the electronic device 1000. The housing 300 may include a cover plate 3001, a frame 3002 and a camera decoration 3003. The cover plate 3001 is located on the side of the display screen 2002 away from the light-transmitting panel 2001, and is stacked with the light-transmitting panel 2001 and the display screen 2002. The frame 3002 is fixed on the cover plate 3001. Exemplarily, the frame 3002 can be fixedly connected to the cover plate 3001 by adhesive. The frame 3002 can also be an integrally formed structure with the cover plate 3001, that is, 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-transmitting panel 2001. The light-transmitting panel 2001 can be fixed to the frame 3002 by gluing. The light-transmitting panel 2001, the cover plate 3001 and the frame 3002 enclose the internal accommodation space of the electronic device 1000. The internal accommodation space accommodates the display screen 2002. The cover plate 3001 can be made of metal, plastic, glass and other materials. The cover plate 3001 can be a plate made of a single material, or a plate structure made of multiple materials and multiple plates. The cover plate 3001 is provided with a mounting opening 3004, and the camera decoration 3003 covers and is fixed at the mounting opening 3004.

[0150] Exemplarily, the camera module 100 is used to take photos / videos. Exemplarily, the camera module 100 is installed in the housing 300, located in the internal accommodation space of the electronic device 1000. Among them, the camera module 100 can be used as a rear camera. For example, the light incident surface of the camera module 100 faces the camera decoration 3003. The camera decoration 3003 is used to protect the camera module 100.

[0151] In some embodiments, the camera decoration 3003 protrudes to the side of the cover plate 3001 away from the light-transmitting panel 2001. In this way, the camera decoration 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 3003 can also be flush with the cover plate 3001 or recessed into the internal accommodation space of the electronic device 1000.

[0152] The camera decoration 3003 is provided with a light-transmitting hole 3005. The light-transmitting hole 3005 allows the scene light to enter the light-entering surface of the camera module 100. In some other embodiments, the electronic device 1000 may not include the camera decoration 3003. In this case, the cover plate 3001 is no longer provided with the mounting opening 3004, but the light-transmitting hole 3005 is provided on the cover plate 3001, and the light-transmitting hole 3005 allows the scene to enter the light-entering surface of the camera module 100.

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

[0154] In some embodiments, Figure 1B As shown, the electronic device 1000 may also include a circuit board assembly 400 and an image processor 500, the circuit board assembly 400 and the image processor 500 are located in the internal accommodation space of the electronic device 1000, and the image processor 500 is fixed to the circuit board assembly 400 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 obtain image data from the camera module 100 and process the image data. Among them, the communication connection between the camera module 100 and the image processor 500 may include data transmission through electrical connection methods such as wiring, and data transmission may also be achieved through coupling and other methods. It is understandable that the camera module 100 and the image processor 500 may also achieve communication connection through other methods that can achieve data transmission.

[0155] In some embodiments, the electronic device 1000 may further include an analog-to-digital converter (also referred to 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, and then 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 in communication with the image processor 500. The image processor 500 processes the image digital signal and then transmits the image to the memory, so that when the image needs to be viewed later, the image can be searched from the memory at any time and displayed on the screen 200. In some embodiments, the image processor 500 also compresses the processed image digital signal and stores it in the memory to save memory space.

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

[0158] Understandably, Figure 1A and Figure 1BThe installation position of the camera module 100 of the electronic device 1000 in the illustrated embodiment is merely illustrative, and the present application does not strictly limit the installation position of the camera module 100. In some other embodiments, the camera module 100 may also be installed at other positions of the electronic device 1000, for example, the camera module 100 may be installed at the upper middle or upper right corner of the back of the electronic device 1000. In some other embodiments, the electronic device 1000 may include a terminal body 211 and an auxiliary component that can be rotated, moved or disassembled relative to the terminal body 211, and the camera module 100 may also be arranged on the auxiliary component.

[0159] In order to facilitate the introduction of the specific structure and relative position relationship of the electronic device 1000, the coordinate direction is defined. Specifically, the width direction parallel to the electronic device 1000 is defined as the X-axis direction, the length direction parallel to the electronic device 1000 is defined as the Y-axis direction, and the thickness direction parallel to the electronic device 1000 is defined as the Z-axis direction. It can be understood that in this application, the definition of the above coordinate direction is only used to illustrate the posture and relative position relationship of the electronic device 1000 and its components in the accompanying 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 direction can also be defined using other references, which is not limited here.

[0160] Please refer to Figure 1A and Figure 2 , Figure 2 yes Figure 1A The electronic device 1000 shown is a schematic diagram of a portion of the structure in some embodiments after being cut open along line AA.

[0161] In some embodiments, the camera module 100 may include a variable aperture 10 and a lens assembly 20. The variable aperture 10 is fixedly mounted on the light incident 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-transmitting hole 3005 of the camera decorative part 3003 to the aperture hole 221, and can be incident on the lens assembly 20 through the aperture hole 221 to achieve imaging.

[0162] In this embodiment, the aperture adjustment of the aperture hole 221 is implemented through the variable aperture 10, thereby achieving control of the amount of light entering, depth of field, etc., so that the camera module 100 can be adaptively adjusted to 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 Figure 3 and Figure 4 , Figure 3 yes Figure 2The structure diagram of the variable aperture 10 in the electronic device 1000 in some embodiments is shown; Figure 4 yes Figure 3 The variable aperture 10 is a partial exploded schematic diagram of the structure in some embodiments.

[0164] In some embodiments, the variable aperture 10 may include a stator 1, a mover 2, a rolling member 3, and a decorative cover 4. The rolling member 3 may be disposed between the stator 1 and the mover 2, so that the mover 2 may rotate relative to the stator 1 through the rolling member 3. The decorative cover 4 may be mounted on the stator 1 to achieve decoration and dust protection.

[0165] Exemplarily, the stator 1 may include a base 11, a magnetic component 12, a circuit component 13 and a gasket 14. The magnetic component 12, the circuit component 13 and the gasket 14 may all be mounted on the base 11.

[0166] Among them, the circuit assembly 13 may include a circuit board 131, a driving coil 132, a driving chip 133 and a capacitor 134. The circuit board 131 can be installed on the base 11, and the circuit board 131 is used for an external circuit. The driving coil 132 can be installed on the circuit board 131 and electrically connected to the circuit board 131, so as to connect to an external power supply through the circuit board 131. The driving chip 133 can be installed on the circuit board 131 and electrically connected to the circuit board 131, and the control of the driving coil 132 can be achieved through the driving chip 133. The capacitor 134 can be installed on the circuit board 131 and electrically connected to the circuit board 131, and the current filtering effect can be achieved through the capacitor 134.

[0167] Exemplarily, the magnetic attraction assembly 12 may include a first magnetic attraction component 121 and a second magnetic attraction component 122 .

[0168] The first magnetic member 121 may be installed on the circuit board 131 , that is, the first magnetic member 121 is installed on the base 11 through the circuit board 131 .

[0169] Exemplarily, the mover 2 may include a carrier 21, a plurality of blades 22, and a driving magnet 23. The blades 22 may connect the base 11 and the carrier 21, and the plurality of blades 22 may surround an aperture 221. The driving magnet 23 may be mounted on the carrier 21.

[0170] The magnetic attraction component 12 can be arranged opposite to the driving magnet 23 to improve the structural stability between the carrier 21 and the base 11 .

[0171] Understandably, Figure 3 and Figure 4 Only some components of the variable aperture 10 are schematically shown, and the actual shapes, sizes, positions and structures of these components are not subject to the present invention. Figure 3 and Figure 4The variable aperture 10 may also include a variable aperture 10 having a Figure 3 and Figure 4 More or fewer parts.

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

[0173] In some embodiments, the base 11 may include a bottom plate 111, a first peripheral side plate 112, a second peripheral side plate 113, and a plurality of bearing platforms 114. The bottom plate 111 may have a first through hole 1111, the first peripheral side plate 112 is connected to the periphery of the bottom 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 are convexly arranged on the same side of the bottom plate 111, and the first peripheral side plate 112, the second peripheral side plate 113 and the bottom plate 111 are surrounded to form a first installation space 115. The plurality of bearing platforms 114 are arranged at intervals along the circumference of the variable aperture 10, and the bearing platforms 114 are located in the first installation space 115 and connected to the first peripheral side plate 112.

[0174] Exemplarily, the base 11 may have a first mounting hole 116, and the first mounting hole 116 may include a first sub-hole 1161 and a second sub-hole 1162, and the first sub-hole 1161 and the second sub-hole 1162 are connected. The first sub-hole 1161 penetrates the first peripheral side plate 112 along the radial direction of the variable aperture 10, and the second sub-hole 1162 penetrates the bottom 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, and 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 size of the second portion 1162b of the second sub-aperture 1162 along the circumferential direction of the variable aperture 10 may be larger than the first portion 1162a, and both ends of the second portion 1162b of the second sub-aperture 1162 exceed both ends of the first portion 1162a.

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

[0177] The first mounting hole 116 may have a first side wall 1121 and a second side wall 1122 on the first peripheral side plate 112, that is, the first sub-hole 1161 may have 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 may be arranged opposite to each other along the circumference of the variable aperture 10.

[0178] For example, there may be a plurality of first mounting holes 116 , and the plurality of first mounting holes 116 may be arranged at intervals along the circumference of the variable aperture 10 .

[0179] The plurality of first mounting holes 116 may be evenly spaced along the circumference of the variable aperture 10 .

[0180] There may be two first mounting holes 116 , and the two first mounting holes 116 may be symmetrically arranged along the center of the variable aperture 10 .

[0181] Exemplarily, the first peripheral side plate 112 may also have a plurality of material reduction holes 1123, and the plurality of material reduction holes 1123 are arranged at intervals along the circumferential direction of the variable aperture 10. The material reduction holes 1123 penetrate the first peripheral side plate 112 along the radial direction of the variable aperture 10. The material reduction holes 1123 are spaced apart from the first sub-hole 1161. The material reduction holes 1123 can reduce material, reduce costs, and reduce weight.

[0182] Among them, through the design of the material reduction hole 1123 and the first sub-hole 1161, the first peripheral side plate 112 is divided into multiple first mounting plates 1124 and multiple second mounting plates 1125, wherein the first sub-hole 1161 is located between two adjacent first mounting plates 1124, and the material reduction hole 1123 is located between the first mounting plate 1124 and the second mounting plate 1125.

[0183] Exemplarily, the base 11 may further include a plurality of mounting posts 117, and the mounting posts 117 are protrudingly disposed on a side of the first mounting plate 1124 that faces away from the bottom plate 111. One or more mounting posts 117 may be disposed on one first mounting plate 1124.

[0184] Illustratively, the second peripheral side plate 113 may be arranged to form a second through hole 1131 , and the second through hole 1131 is connected to the first through hole 1111 .

[0185] The base 11 may further include a plurality of first protruding columns 118 , which may be arranged at intervals along the circumference of the variable aperture 10 , and the first protruding columns 118 may be protruded on a side of the second peripheral side plate 113 facing away from the bottom plate 111 .

[0186] Exemplarily, the base 11 may further include a first mounting platform 119, which is convexly disposed on a side of the second peripheral side plate 113 facing the first mounting hole 116. It should be noted that the base 11 may include only one first mounting platform 119, and the first mounting platform 119 is disposed corresponding to only one first mounting hole 116 among the plurality of first mounting holes 116.

[0187] Wherein, at a position where the first mounting platform 119 is provided on the second peripheral side plate 113 , a surface of the second peripheral side plate 113 facing the first mounting hole 116 may be a plane.

[0188] The surface of the first mounting platform 119 facing away from the bottom plate 111 may be a plane.

[0189] Exemplarily, a first mounting groove 1141 may be provided on a side of the support platform 114 facing away from the first peripheral side plate 112 , and the first mounting groove 1141 penetrates a surface of the support platform 114 facing away from the bottom plate 111 and a surface of the support platform 114 facing the second peripheral side plate 113 .

[0190] Among them, the supporting platform 114 can have a first supporting surface 1142 and a second supporting surface 1143 facing away from the bottom plate 111, the first supporting surface 1142 and the second supporting surface 1143 are located on both sides of the first mounting groove 1141, and the first supporting surface 1142 is farther away from the bottom plate 111 than the second supporting surface 1143, that is, the first supporting surface 1142 is higher than the second supporting surface 1143.

[0191] Exemplarily, the bottom plate 111 may further have a second mounting groove 1112 , the opening of which faces away from the first peripheral side plate 112 , that is, the second mounting groove 1112 is located on a side of the bottom plate 111 facing away from the first peripheral side plate 112 . The second mounting groove 1112 is connected to the second sub-hole 1162 .

[0192] Exemplarily, the base 11 may also have a second mounting platform 120, which is protruding from the side of the bottom plate 111 facing away from the first peripheral side plate 112. The second mounting platform 120 is used to cooperate with the lens assembly 20 when the variable aperture 10 is installed on the lens assembly 20, thereby improving the stability of the installation.

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

[0194] The second mounting hole 1113 may be disposed adjacent to the first mounting hole 116 .

[0195] Please refer to Figure 5A , Fig. 7A and Figure 7B , Fig. 7A yes Figure 5AThe illustrated schematic diagram of partial structural decomposition of the base 11 in some embodiments; Figure 7B yes Figure 5A The shown diagram is a partial structural diagram of the base 11 in some embodiments after being cut open along line BB.

[0196] In some embodiments, the base 11 may include a base body 11 a and a first frame 11 b , wherein the first frame 11 b is embedded in the base body 11 a to improve the stability of the overall structure of the base 11 .

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

[0198] The first portion 11 ba of the first frame 11 b may be provided with an avoidance structure to avoid the first mounting hole 116 , that is, the first frame 11 b will not be exposed at the first mounting hole 116 of the base 11 .

[0199] For example, the first frame 11b can be made of a hard material such as metal or ceramic, and the base 11a can be made of a material that is easy to process, such as plastic. In this way, the base 11a is easy to process and the first frame 11b provides strength support, so that the base 11 is easy to prepare and has a high structural strength.

[0200] Please refer to Figure 8 , Fig. 9 and Fig. 10A , Figure 8 yes Figure 5A The base 11 is a schematic diagram of the structure of installing some components in some embodiments; Fig. 9 yes Figure 8 An exploded view of a portion of the structure shown in some embodiments; Fig. 10A yes Figure 8 A schematic diagram of the structure shown in another perspective.

[0201] In some embodiments, the base 11 can be installed with a circuit component 13 , a first magnetic member 121 , a second magnetic member 122 and a rolling member 3 .

[0202] Exemplarily, the circuit assembly 13 may be installed on a side of the bottom plate 111 facing away from the first peripheral plate 112 . At least a portion of the drive coil 132 is located in the first mounting hole 116 , and one drive coil 132 is disposed corresponding to one first mounting hole 116 .

[0203] In this embodiment, due to the design of the first mounting hole 116, the driving coil 132 can be exposed through the first mounting hole 116, and the driving coil 132 in the thickness direction (Z-axis direction) of the variable aperture 10 at least partially overlaps with the bottom plate 111 in the Z-axis direction, thereby reducing the size space occupied by the driving coil 132 in the thickness direction of the variable aperture 10, which is conducive to realizing the thinning design of the variable aperture 10. In addition, since the setting of the first mounting hole 116 also realizes the material reduction design of the base 11, the weight of the base 11 can be reduced, which is conducive to the lightweight design of the variable aperture 10.

[0204] The circuit board 131 may cover the second sub-hole 1162, a portion of the driving coil 132 may be located in the first portion 1162a of the second sub-hole 1162, and a portion of the driving coil 132 may be located in the second portion 1162b of the second sub-hole 1162. A plurality of first pads 1311 are provided on the circuit board 131, the first pads 1311 may be exposed in the second portion 1162b of the second sub-hole 1162, and two first pads 1311 may 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 this embodiment, since the size of the second part 1162b of the second sub-hole 1162 is larger than the first part 1162a, the driving coil 132 and the first solder pad 1311 can be exposed in the second part 1162b of the second sub-hole 1162 at the same time, providing an electrical connection space for the driving coil 132, which is beneficial to the installation of the driving coil 132 and improves the space utilization of the base 11.

[0206] The driving coil 132 may be surrounded to form a second installation space, and the driving chip 133 may be located in the second installation space and electrically connected to the circuit board 131 .

[0207] In this embodiment, the driving chip 133 is installed in the driving coil 132 , which is not only beneficial for the driving chip 133 to control the driving coil 132 , but also beneficial for saving space and improving the space utilization of the variable aperture 10 .

[0208] The capacitor 134 may be exposed through the second mounting hole 1113 .

[0209] In this embodiment, by providing the second mounting hole 1113 for accommodating the capacitor 134, it is helpful to save space and reduce the extra space occupied by the circuit component 13 in the thickness direction of the variable aperture 10, thereby realizing a thin and light 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, which is beneficial for the drive chip 133 to better control the drive coil 132.

[0210] Exemplarily, the second magnetic attraction member 122 is located in the first installation space 115 , and is installed on a surface of the second peripheral side plate 113 facing the first peripheral side plate 112 .

[0211] In this 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 installed on the second peripheral side plate 113 .

[0212] The second magnetic member 122 may be installed on the surface of the first mounting platform 119 facing away from the bottom plate 111 .

[0213] In this embodiment, since the surface of the first mounting platform 119 facing away from the bottom plate 111 is a plane, it is helpful to improve the stability of the second magnetic attraction member 122 installed on the first mounting platform 119 .

[0214] The second magnetic member 122 may be in the shape of an elongated strip, and along the circumference of the variable aperture 10 , the widths of both ends of the second magnetic member 122 may be greater than the width of the middle portion of the second magnetic member 122 .

[0215] Exemplarily, the rolling element 3 may be located in the first mounting groove 1141 of the support platform 114 , and the support platform 114 provides limiting support for the rolling element 3 to prevent the rolling element 3 from being separated from the first mounting groove 1141 .

[0216] Please refer to FIG. 10B to FIG. 11B , Fig. 10B yes Figure 8 A schematic diagram of the structure shown in another viewing angle; Fig.11A yes Figure 8 The structure shown is a schematic diagram of the structure in some embodiments after being cut along line CC; Fig. 11B yes Figure 8 The structure shown is a schematic diagram of the structure in some embodiments after being cut apart along line DD.

[0217] In some embodiments, the first magnetic member 121 may be installed on the base 11 and located on a side of the driving coil 132 facing away from the driving coil 132 .

[0218] Exemplarily, the first magnetic member 121 may be installed on a side of the circuit board 131 facing away from the driving coil 132 , so that the first magnetic member 121 is installed on the base 11 .

[0219] Exemplarily, the bottom plate 111 may have a second mounting groove 1112, the opening of the second mounting groove 1112 faces away from the first peripheral plate 112, and the second mounting groove 1112 may be connected to the second sub-hole 1162. The circuit board 131 may be installed in the second mounting groove 1112.

[0220] In this embodiment, the second mounting groove 1112 is designed to allow the circuit board 131 to be embedded in the bottom plate 111 , thereby reducing the space occupied by the circuit board 131 , which is beneficial to achieving a lightweight design of the variable aperture 10 .

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

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

[0223] In some embodiments, the plurality of rolling elements 3 may include a first rolling ball 31 and a second rolling ball 32 , and the first rolling ball 31 is closer to the second magnetic element 122 than the second rolling ball 32 .

[0224] Exemplarily, the drive coil 132 corresponding to the second magnetic member 122 can be called a first drive coil 132a, and the drive coil 132 located elsewhere can be called a second drive coil 132b. The rolling element 3 installed on the support platform 114 located on both sides of the first drive coil 132a is a first ball 31, and the rolling element 3 installed on the support platform 114 located on both sides of the second drive coil 132 is a second ball 32.

[0225] Illustratively, in the bearing platform 114 , since the first bearing surface 1142 is higher than the second bearing surface 1143 , the rolling element 3 can be installed via one side of the second bearing surface 1143 , which is conducive to the convenient installation of the rolling element 3 .

[0226] Please refer to Fig. 12A and Fig. 12B , Fig. 12A yes Figure 3 The structure diagram of the carrier 21 in the variable aperture 10 in some embodiments is shown; Fig. 12B yes Fig. 12A The structure of the carrier 21 is shown in another perspective.

[0227] In some embodiments, the carrier 21 may include a body 211, a plurality of first bumps 212, and a plurality of second bumps 213. The body 211 may be an annular structure, the body 211 having an inner annular surface 2111 and an outer annular surface 2112 disposed opposite to each other, the first bump 212 being connected to one side of the body 211, and the first bump 212 being closer to the inner annular surface 2111 than to the outer annular surface 2112. The second bump 213 is connected to the outer annular surface 2112 of the body 211.

[0228] Exemplarily, the body 211 may have a top surface 2113 and a bottom surface 2114 disposed opposite to each other. The top surface 2113 is connected between the outer annular surface 2112 and the inner annular surface 2111, and the bottom surface 2114 is connected between the outer annular surface 2112 and the inner annular surface 2111. The first protrusion 212 is connected to the inner annular surface 2111.

[0229] The carrier 21 may further have a fourth mounting groove 214 , wherein a portion of the fourth mounting groove 214 is disposed on the bottom surface 2114 , and another portion of the fourth mounting groove 214 is disposed on the second protrusion 213 .

[0230] Exemplarily, the carrier 21 may have a plurality of second convex pillars 215 , the plurality of second convex pillars 215 are arranged along the circumference of the variable aperture 10 , and the second convex pillars 215 are disposed on the top surface 2113 .

[0231] Please refer to Fig.13 and Fig.14 , Fig.13 yes Fig. 12A The illustrated carrier 21 is a partial structural exploded schematic diagram in some embodiments; Fig.14 yes Fig. 12A The structure diagram of the carrier 21 in some embodiments after being cut along line EE is shown.

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

[0233] Exemplarily, the second skeleton 21b may include a first part 21ba and a second part 21bb that are connected. The first part 21ba of the second skeleton 21b is embedded in the main body 211, and the second part 21bb of the second skeleton 21b is embedded in the second protrusion 213, which is equivalent to strengthening the support for the structure extending from the main body 21a through the second part 21bb of the second skeleton 21b, thereby further improving the overall structural strength of the carrier 21.

[0234] The second portion 21 bb of the second frame 21 b may be exposed from the fourth installation groove 214 .

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

[0236] Please refer to FIG. 15A to FIG. 16 , Fig.15A yes Fig. 12A The structure diagram of the stage shown in some embodiments is to install the driving magnet 23; Fig. 15B yes Fig.15A A schematic diagram of the structure shown in another viewing angle; Fig.16 yes Fig.15A The structure shown is a schematic diagram of the structure in some embodiments after being cut open along line FF.

[0237] In some embodiments, the driving magnet 23 may be mounted on the carrier 21 , wherein a portion of the driving magnet 23 is mounted on the body 211 , and another portion of the driving magnet 23 is mounted on the second protrusion 213 .

[0238] Exemplarily, the driving magnet 23 may be installed in the fourth installation groove 214 . The design of the fourth installation groove 214 may improve the stability of the driving magnet 23 installed on the carrier 21 .

[0239] The second portion 21bb of the second skeleton 21b may be made of magnetic material. Such a design can not only improve the stability of the driving magnet 23 installed on the carrier 21 , but also provide a magnetic field guiding function for the driving magnet 23 .

[0240] Each driving magnet 23 may include a plurality of magnets. For example, the driving magnet 23 may include a first magnet 231, a second magnet 232, and a third magnet 233. The second magnet 232 may be connected between the first magnet 231 and the third magnet 233. The N-pole surface of the first magnet 231 may face away from the body 211, the N-pole surface of the second magnet 232 may face the third magnet 233, and the N-pole surface of the third magnet 233 may face the body 211. Fig. 15B The structure of the driving magnet 23 shown can be called a Halbach magnet, which can increase the magnetic field strength of the driving magnet 23 .

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

[0242] Please refer to Fig.17 and Fig.18 , Fig.17 yes Fig.15A The structure shown is Figure 8 The structure shown is a schematic diagram of the structure in which the structure is assembled in some embodiments; Fig.18 yes Fig.17 The structure shown is a schematic diagram of the structure in some embodiments after being cut open along line GG.

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

[0244] In this embodiment, the setting of the first mounting hole 116 provides an installation space for the driving magnet 23 and the driving coil 132, which can not only improve the installation convenience of the driving magnet 23 and the driving coil 132, but also avoid the first peripheral side plate 112 from forming an installation obstacle to the driving coil 132 and the driving magnet 23, and can reduce the radial size of the base 11, thereby reducing the radial size of the variable aperture 10, which is conducive to the miniaturized design of the variable aperture 10.

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

[0246] In this embodiment, when the number of the 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, the stability of the rotation of the carrier 21 relative to the base 11 can also be improved through the cooperation of the driving magnet 23 and the driving coil 132.

[0247] Exemplarily, the driving magnet 23 can be arranged relative to the driving coil 132 along the thickness direction of the variable aperture 10, that is, the driving magnet 23 can be arranged relative to the driving coil 132 along the Z-axis direction to form a flat coil structure. The driving magnet 23 and the driving coil 132 can form a driving component. After the driving coil 132 is energized, the Lorentz force can be generated under the action of the magnetic field of the driving magnet 23. The action of the Lorentz force can push 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 member 121 can be arranged opposite to the driving magnet 23 along the thickness direction of the variable aperture 10 to achieve a magnetic attraction on the driving magnet 23 in the thickness direction of the variable aperture 10, which is beneficial to the stability of the carrier 21 in the thickness direction of the variable aperture 10.

[0249] Among them, the number of first magnetic components 121 can be the same as the number of driving magnets 23, and one first magnetic component 121 is set corresponding to one driving magnet 23 to ensure that in each area where the driving magnet 23 is set, the first magnetic component 121 can improve the connection stability between the carrier 21 and the base 11 in the Z-axis direction by magnetic attraction with the driving magnet 23.

[0250] Among them, within the rotation range of the carrier 21 relative to the base 11, the first magnetic attraction component 121 and the driving magnet 23 are at least partially arranged opposite to each other, so that within the rotation range of the carrier 21 relative to the base 11, the first magnetic attraction component 121 can provide the carrier 21 with adsorption force in the Z-axis direction, thereby making the carrier 21 more stable in the Z-axis direction throughout the entire rotation range.

[0251] Illustratively, the second magnetic member 122 may be disposed opposite to the driving magnet 23 in the radial direction of the variable aperture 10 to achieve a magnetic attraction effect on the driving magnet 23 in the radial direction of the variable aperture 10 , which is beneficial to the stability of the carrier 21 in the radial direction of the variable aperture 10 .

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

[0253] Among them, within the rotational stroke of the carrier 21 relative to the base 11, the second magnetic attraction component 122 and the driving magnet 23 are at least partially arranged opposite to each other, so that within the rotational stroke of the carrier 21 relative to the base 11, the second magnetic attraction component 122 can provide lateral adsorption force for the carrier 21, thereby making the carrier 21 have a higher stability in the radial direction of the variable aperture 10 throughout the entire rotational stroke.

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

[0255] In some embodiments, the carrier 21 may be sleeved on the outer side of the second peripheral side plate 113 , wherein the body 211 and the first protrusion 212 may be located in the first installation space 115 , and the second protrusion 213 may be located in the first installation hole 116 .

[0256] In this embodiment, due to the structural setting of the base 11, the carrier 21 can be partially installed in the first installation space 115 and mounted on the outer side of the second peripheral side plate 113. Such a design is conducive to improving the stability of the carrier 21 installed on the base 11 and improving the space utilization.

[0257] Since the carrier 21 is sleeved on the outer side of 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] Exemplarily, the surface of the body 211 facing the bottom plate 111 may abut against the first bearing surface 1142, that is, the bottom surface 2114 of the body 211 may 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, so that there is a gap between the body 211 and the second bearing surface, it can be avoided that the contact surface between the body 211 and the carrier 114 is too large to cause excessive friction. Such a design can reduce the friction resistance of the base 11 to the carrier 21 while ensuring that the base 11 provides a relatively stable support for the carrier 21, which is conducive to better rotation of the carrier 21 relative to the base 11.

[0259] Exemplarily, the surface of the first protrusion 212 facing the outer annular surface 2112 of the body 211 may abut against the rolling element 3 , and the arrangement of the rolling element 3 enables the carrier 21 to rotate relative to the base 11 .

[0260] Among them, among the multiple rolling members 3, since the first ball 31 is closer to the second magnetic member 122 than the second ball 32, under the action of the second magnetic member 122, the carrier 21 moves toward the direction of the second ball 32 driven by the driving magnet 23, so that the carrier 21 abuts against the second ball 32 along the radial direction of the variable aperture 10, and the second ball 32 abuts against the base 11 along the radial direction of the variable aperture 10. In this way, the radial stability of the carrier 21 in the variable aperture 10 is achieved, and it is also beneficial to improve the contact stability between the carrier 21 and the second ball 32, and it is beneficial to provide rolling friction for the carrier 21 through the second ball 32, so as to better realize the rotation of the carrier 21 relative to the base 11.

[0261] It should be noted that generally, there is a margin for installation between the plurality of rolling elements 3, so that the carrier 21 can be installed between the plurality of rolling elements 3. At this time, under the action of the second magnetic element 122, the carrier 21 abuts against the second rolling element 3, and there is a gap d1 between the carrier 21 and the first ball 31. It can be understood that in some other embodiments, the plurality of rolling elements 3 may not have a margin for installation of the carrier 21. At this time, the carrier 21 abuts against both the first rolling element 3 and the second rolling element 3.

[0262] Please refer to Fig.21A and Fig. 21B , Fig.21A yes Figure 3 The structure diagram of the spacer 14 in the variable aperture 10 in some embodiments is shown; Fig. 21B yes Fig.21A The gasket 14 shown is installed on Fig.17 Structural diagram of the structure shown.

[0263] In some embodiments, the periphery of the gasket 14 may 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 may be mounted on the second peripheral side plate 113 of the base 11, and the first openings 141 are matched and connected with the mounting posts 117 located on the second peripheral side plate 113. 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 is connected to the second through hole 1131 of the base 11.

[0264] In this embodiment, the gasket 14 plays a role of dust protection, which can prevent external impurities from entering the interior of the variable aperture 10. The gasket 14 is connected with the mounting post 117 through the first opening 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 yes Figure 3 The structure diagram of the plurality of blades 22 in the variable aperture 10 in some embodiments is shown; Fig. 22B yes Fig.22A A schematic diagram of the structure of one blade 22 among the plurality of blades 22 shown in some embodiments.

[0266] In some embodiments, a plurality of blades 22 may be arranged to surround an aperture 221. Specifically, the plurality of blades 22 are arranged to overlap each other in sequence. Fig.22ATaking the angle of view and the number of blades 22 as an example, in the clockwise direction, part of the second blade 22 is located above the first blade 22, part of the third blade 22 is located below the second blade 22, part of the fourth blade 22 is located above the third blade 22, the fifth blade 22 is located below the fourth blade 22, the sixth blade 22 is located above the fifth blade 22, and the first blade 22 is located below the sixth blade 22. With such a design, by rotating multiple blades 22, the aperture size of the aperture hole 221 can be changed.

[0267] It should be noted that Fig.22A The number of the blades 22 is only for illustration and does not limit the number of the blades 22 in the variable aperture 10 , as long as the blades 22 can be rotated to change the size of the aperture hole 221 .

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

[0269] Please refer to FIG. 23A to FIG. 24B , Fig.23A yes Fig.22A The plurality of blades 22 are mounted on Fig. 21B A schematic diagram of the structure shown; Fig. 23B yes Fig.23A A schematic diagram of the structure shown in another viewing angle; Fig.24A yes Fig.23A The structure shown is a schematic diagram of the structure in some embodiments after being cut along line JJ; Fig. 24B yes Fig.23A The structure shown is a schematic diagram of the structure in some embodiments after being cut open along line KK.

[0270] In some embodiments, the rotation hole 222 of the blade 22 can be sleeved on the first convex column 118 of the base 11, and the sliding hole 223 can be sleeved on the second convex column 215 of the carrier 21. The carrier 21 is used to drive the first convex column 118 of the blade 22 to rotate through the second convex column 215 to change the aperture size of the aperture hole 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 protrusion 118 is fixed, and the second protrusion 215 moves relative to the base 11 together with the carrier 21, so that when the carrier 21 rotates relative to the base 11, the second protrusion 215 moves in the sliding hole 223, and drives the blade 22 to rotate around the first protrusion 118 by acting on the inner wall of the sliding hole 223, thereby changing the overlapping surface between two adjacent blades 22, and then changing the aperture size of the aperture hole 221 formed by multiple blades 22.

[0272] Exemplarily, 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.

[0273] In this embodiment, the first side wall 1121 and the second side wall 1122 can form a limit for the second protrusion 213, which can prevent the blade 22 from being damaged when the carrier 21 drives the blade 22 to rotate. In other words, when the second protrusion 213 abuts against the first side wall 1121 or the second side wall 1122, there is a gap between the second protrusion 215 and both ends of the sliding hole 223. Such a design can prevent the second protrusion 215 from driving the blade 22 to rotate excessively, so as to prevent the blade 22 from being damaged due to excessive force.

[0274] by Fig. 23B Taking the structure shown as an example, the carrier 21 rotates relative to the base 11 in a counterclockwise direction, and the aperture of the aperture hole 221 gradually increases. When the second protrusion 213 abuts against the first side wall 1121, the carrier 21 cannot continue to move counterclockwise. At this time, the blade 22 is in the first position, and the aperture hole 221 has the maximum aperture. Similarly, when the carrier 21 rotates relative to the base 11 in a clockwise direction, the aperture of the aperture hole 221 gradually decreases. When the second protrusion 213 abuts against the second side wall 1122, the carrier 21 cannot continue to move clockwise. At this time, the blade 22 is in the second position, and the aperture hole 221 has the minimum aperture.

[0275] Exemplarily, the first through hole 1111 of the bottom 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 such a 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 Figure 25 to Figure 27 , Fig.25 yes Figure 3 The structure diagram of the decorative cover 4 in the variable aperture 10 shown in some embodiments; Fig.26 yes Fig.25 The illustrated schematic diagram of the structure explosion of the decorative cover 4 in some embodiments; Fig. 27 yes Fig.25 The decorative cover 4 is shown as a schematic structural diagram of one side of the embodiment after being cut open along line LL.

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

[0278] Exemplarily, the decorative cover 4 may include a first cover body 42 and a second cover body 43 , and the first cover body 42 and the second cover body 43 may be stacked.

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

[0280] Among them, the first cover body 42a and the third frame 42b can be both provided with weight-reducing holes. The design of the weight-reducing holes can not only reduce material and weight, but also form an I-shaped structure to improve its own structural strength.

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

[0282] The first cover body 42a may further include a plurality of second openings 421a, which may be spaced apart along the circumference of the first cover body 42a. The second openings 421a may penetrate the first cover body 42a along the Z-axis direction, and the second openings 421a penetrate the side of the first cover body 42a.

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

[0284] Please refer to Figure 3 and Fig.25 In some embodiments, the decorative cover 4 can be installed on the base 11, wherein the edge of the decorative cover 4 overlaps the first peripheral 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 installed on the base 11.

[0285] Exemplarily, the fourth through hole 41 can be connected to the aperture hole 221, and the aperture of the fourth through hole 41 is greater than or equal to the maximum aperture 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 can not only play an external decoration role, but also play a dust protection role.

[0286] The side protruding structures of the second cover body 43 and the first cover body 42 can cover the second protrusion 213 of the carrier 21, thus playing a role of covering and decoration.

[0287] Please refer to Figures 28 to 29B , Fig.28 yes Figure 3The structure diagram of the variable aperture 10 in some embodiments after being cut along line MM is shown; Fig.29A yes Figure 3 The structure diagram of the variable aperture 10 in some embodiments after being cut along line N1-N1 is shown; Fig.29B yes Figure 3 The structure diagram of the variable aperture 10 in some embodiments is shown after it is cut along line N2 - N2 .

[0288] In this embodiment, since the first magnetic member 121 and the driving magnet 23 are arranged relative to each other along the thickness direction of the variable aperture 10, the first magnetic 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. Since the second magnetic member 122 and the driving magnet 23 are arranged relative to each other along the radial direction of the variable aperture 10, the second magnetic member 122 can generate a lateral magnetic attraction 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 aperture hole 221 is adjusted, the first magnetic member 121 and the second magnetic member 122 can strengthen the connection between the carrier 21 and the base 11 through the magnetic attraction 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 component 121 and the second magnetic component 122, the current of the driving coil 132 can be cut off after the aperture hole 221 is adjusted. The stability of the carrier 21 and the blade 22 is ensured by the first magnetic component 121 and the second magnetic component 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, and realize power reduction, which is beneficial to improve the resolution of the camera module 100 when the variable aperture 10 is applied to the camera module 100.

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

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

[0291] In this embodiment, since the static time of the blades 22 in the variable aperture 10 is much longer than the moving time of the blades 22, that is, the time for the aperture of the aperture hole 221 to change is less, therefore, after the position of the blades 22 is adjusted into place, by cutting off the power to the drive coil 132, the stable current of the variable aperture 10 can be greatly reduced, thereby achieving power consumption reduction, which is beneficial for improving the resolution of the camera module 100 when the variable aperture 10 is applied to the camera module 100.

[0292] In some embodiments, the variable aperture 10 may satisfy:

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

[0294] (F c -mg) / (μ1F z )>1.2

[0295] Among them, F z is the magnetic attraction of the first magnetic attraction member 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 between the body 211 and the first bearing surface 1142 and the center of the carrier 21; F c is the magnetic attraction of the second magnetic attraction member 122 to the driving magnet 23; μ2 is the friction coefficient between the first convex block 212 and the rolling member 3; L2 is the distance between the contact point between the first convex block 212 and the rolling member 3 and the center of the carrier 21; F r1 F is the disturbance torque of the internal components of the electronic device 1000 on the variable aperture 10; r2 is the disturbance torque of the external environment on the variable aperture 10.

[0296] It should be noted that F r1 Specifically, it is the disturbance torque of the electronic device 1000 on the variable aperture 10 outside the variable aperture 10, and its specific value can be obtained by testing according to the specific structure of the electronic device 1000. r2 Specifically, it is the disturbance torque of the external part of the electronic device 1000 on the variable aperture 10, which can be obtained by testing according to the usage scenario of the electronic device 1000. For example, the extreme scenario of the electronic device 1000 can be selected for test and value acquisition, or the most common usage scenario of the electronic device 1000 can be selected for test and value acquisition.

[0297] In this embodiment, through the design of the above formula, in the process of changing the aperture hole 221, a 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, thereby providing the carrier 21 with a torque in the thickness direction and lateral direction of the variable aperture 10 to overcome the external disturbance of the variable aperture 10, so that the carrier 21 can stably rotate relative to the base 11, thereby realizing stable switching of the aperture of the aperture hole 221. In addition, through the design of the above formula, after the aperture hole 221 is adjusted, the first magnetic attraction component 121 can generate a strong magnetic attraction force with the driving magnet 23 in the Z-axis direction, and the second magnetic attraction component 122 can generate a strong lateral magnetic attraction with the driving magnet 23, so that the carrier 21 can be stably overlapped on the supporting platform 114 of the base 11 in the Z-axis direction, and the carrier 21 can be stably abutted against the rolling element 3 in the radial direction of the variable aperture 10. At this time, there is no need to control the stability of the carrier 21 through the driving coil 132. Therefore, the steady-state current of the variable aperture 10 can be reduced by powering off the driving coil 132, thereby reducing power consumption, which is beneficial to improving the resolution of the camera module 100 when the variable aperture 10 is applied to the camera module 100.

[0298] Next, the control method provided by this application is introduced.

[0299] Please refer to Fig.28 and Fig.30 , Fig.30 It is a flowchart of a control method provided in one embodiment of the present application.

[0300] In some embodiments, a cyclic detection method may be used to detect whether the variable aperture 10 receives the first instruction. The first instruction is used to instruct the blades 22 to be adjusted to a target position to achieve aperture adjustment of the aperture hole 221.

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

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

[0303] If yes, execute step S201, if no, execute step S211.

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

[0305] Among them, the variable aperture can be Fig.28 The variable aperture 10 in the embodiment of the present invention may have a blade which can be Fig.28 The blades 22 in the.

[0306] The first switching strategy is a strategy for reducing the steady-state current of the variable aperture 10, and the first switching strategy may include: the variable aperture 10 controls the driving coil 132 to be powered off, the variable aperture 10 switches the closed-loop controller to an open-loop controller, the variable aperture 10 switches the first closed-loop controller to a second closed-loop controller, wherein the first closed-loop controller is a Proportional Integration Differentiation (PID) controller, and the second closed-loop controller is a Proportional-Derivative (PD) controller, etc. The specific implementation of the first switching strategy will be described in detail later.

[0307] Among them, various controllers can be integrated into the driving chip 133.

[0308] Step S202, the timer is reset.

[0309] Step S211, the timer increments.

[0310] Step S212, determining whether the timing duration reaches a preset duration.

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

[0312] If yes, execute step S213, if no, continue to execute step S1.

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

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

[0315] If yes, execute step S2141, if no, execute step S2142.

[0316] Step S2141: the variable aperture continues to control the blades in the first manner.

[0317] Step S2142: the variable aperture continues to control the blades in the second manner.

[0318] According to different current positions of the blades 22 , the blades 22 are controlled in different ways, so that appropriate control methods are adopted for different scenes to achieve a reduction in the steady-state current of the variable aperture 10 .

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

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

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

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

[0323] If so, the first switching strategy is step S1111, and step S1111 is executed. If not, the first switching strategy is step S1121, and step S1121 is executed.

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

[0325] Since the blades 22 of the variable aperture 10 need to be fully opened in the first position, 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 requires a larger driving force to ensure close contact and stable position between the blades 22. The driver 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 locate the target position. However, in the first position and the second position, due to the particularity of mechanical movement, the driver chip 133 needs to output a larger current to overcome the mechanical resistance and friction, resulting in a surge in the steady-state current of the variable aperture 10.

[0326] Among them, the steady-state current of the variable aperture to maintain closed-loop control can be referred to Fig.32 , Fig.32 Schematic diagram of steady-state current when the variable aperture uses a closed-loop controller to maintain the blade position in some embodiments. The horizontal axis is the motor stroke, and different motor strokes correspond to different positions of the blade. When the motor stroke is 0, it corresponds to the first position of the blade, and when the motor stroke is 4000, it corresponds to the second position of the blade. It can be understood that in some other embodiments, when the motor stroke is 0, it corresponds to the second position of the blade, and when the motor stroke is 4000, it corresponds to the first position of the blade.

[0327] Depend on 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 position and the second position compared to other positions.

[0328] In this embodiment, the variable aperture 10 switches the closed-loop controller to an open-loop controller, and is designed in such a way that the control of the blade 22 by the driver chip 133 is switched from closed-loop control to open-loop control. In this way, the driver chip 133 no longer adjusts the control of the blade 22 in real time based on the position information feedback of the blade 22, thereby saving the electric energy consumed by the driver chip 133 in processing the feedback information, thereby reducing power consumption.

[0329] In this embodiment, due to the arrangement of the first magnetic member 121 and the second magnetic member 122, the first magnetic member 121 can ensure the stability of the carrier 21 in the thickness direction of the variable aperture 10 through the magnetic attraction between the first magnetic member 121 and the driving magnet 23, and the second magnetic member 122 can ensure the stability of the carrier 21 in the radial direction of the variable aperture 10 through the magnetic attraction between the first magnetic member 121 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 be driven by a small current to achieve the stability of the blade 22 in the first position or the second position, thereby reducing power consumption.

[0330] In this embodiment, it can be combined with reference to Fig.23A , since the second protrusion 213 of the carrier 21 abuts against the first side wall 1121 when the blade 22 is in the first position, the variable aperture 10 only needs to apply a force toward the first side wall 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 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. Therefore, the variable aperture 10 only needs to apply a force toward the second side wall 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 conducive to reducing power consumption.

[0331] It should be noted that after the variable aperture 10 is switched to the open-loop controller, the variable aperture 10 can switch from high current control to low current control while ensuring the stability of the blades 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 so as to be applied to the case where the variable aperture 10 is switched to the open-loop controller.

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

[0333] If yes, execute step S1113, if no, execute step S1114.

[0334] Step S1113: the variable aperture continues to control the blades through the open-loop controller.

[0335] It should be noted that Fig.30 The “variable aperture continues to control the blades by the first method” in step S2141 may refer to the “variable aperture continues to control the blades by the open-loop controller” in step S1113 in this embodiment.

[0336] In step S1114, the iris diaphragm switches the open-loop controller to a closed-loop controller, and controls the blades to adjust to the target position through the closed-loop controller.

[0337] Continue to execute step S1111.

[0338] In this embodiment, by executing steps S1112 and S1114, the situation in which the variable aperture 10 is not adjusted to the target position due to external interference can be dealt with during the adjustment process of the variable aperture 10, so that the adjustment of the aperture hole 221 is more precise and has strong risk resistance.

[0339] The current position of the blade 22 can be determined by the Hall value measured by the Hall element, thereby determining whether the current position of the blade 22 is within a preset error range of the target position.

[0340] The Hall element may be integrated into the driving chip 133 .

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

[0342] The driving coil can be Fig.28 The driving coil 132 in.

[0343] In this embodiment, since the first magnetic member 121 and the driving magnet 23 are arranged relative to each other along the thickness direction of the variable aperture 10, the first magnetic member 121 can generate a magnetic attraction force in the Z-axis direction with the driving magnet 23, so that the carrier 21 can be stably connected to the base 11 in the Z-axis direction. Since the second magnetic member 122 and the driving magnet 23 are arranged relative to each other in the radial direction of the variable aperture 10, the second magnetic 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 drive coil 132 is cut off, and the stability of the carrier 21 and the blade 22 can be ensured through the first magnetic component 121 and the second magnetic component 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, and achieve power consumption reduction, which is beneficial to improve the resolution of the camera module 100 when the variable aperture 10 is applied to the camera module 100.

[0344] Step S1122, determining whether the current position of the blade 22 is within a preset error range of the target position.

[0345] If yes, execute step S1123, if no, execute step S1124.

[0346] 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 blades in the second manner” in step S2142 may refer to the “variable aperture continues to control the drive coil to be powered off” in step S1123 of this embodiment.

[0348] Step S1124: the variable aperture control driving coil is energized and the driving blades are adjusted to the target position.

[0349] Continue to step S1121.

[0350] In this embodiment, by executing steps S1122 and S1124, the situation in which the variable aperture 10 is not adjusted to the target position due to external interference can be dealt with during the adjustment process of the variable aperture 10, thereby making the adjustment of the aperture hole 221 more precise and more resistant to risks.

[0351] The current position of the blade 22 can be determined by the Hall value measured by the Hall element, thereby determining whether the current position of the blade 22 is within a preset error range of the target position.

[0352] In some other embodiments, when the target position is the first position or the second position, the variable aperture 10 may further perform steps S1121 to S1124. Fig.30 Step S2141 “the variable aperture continues to control the blades in the first manner” may refer to step S1123 in this embodiment “the variable aperture continues to control the drive coil to be powered off”.

[0353] It should be noted that in some scenarios, it is not necessary to distinguish whether the target position is the first position or the second position, and the first switching strategy can be step S1121, so as to achieve the position stability of the carrier 21 and the blade 22 by setting the first magnetic member 121 and the second magnetic member 122, thereby realizing the power-off locking of the drive coil 132, reducing the steady-state current, and realizing power consumption reduction. In other scenarios, when the position stability of the carrier 21 and the blade 22 cannot be completely achieved by relying solely on the first magnetic member 121 and the second magnetic member 122 in the first position or the second position, the first switching strategy can be step S1111, so that the drive coil 132 is driven by a small current to ensure the position stability of the carrier 21 and the blade 22.

[0354] In some other embodiments, when the blades 22 only include a first position and a second position, that is, when the variable aperture 10 has only two gears, the first switching strategy may not rely on the first magnetic component 121 and the second magnetic component 122. Only by switching the closed-loop controller to an open-loop controller, the position of the carrier 21 and the blades 22 can be stabilized while reducing the steady-state current of the variable aperture 10.

[0355] Please refer to Fig.28 , Fig.30 and Fig.33 , Fig.33 yes Fig.30 The control method shown is a schematic diagram of a specific flow chart in other embodiments. It should be noted that: Fig.33 The control method shown does not show loop control.

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

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

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

[0359] If so, the first switching strategy is step S2111, and step S2111 is executed. If not, the first switching strategy is step S2121, and step S2121 is executed.

[0360] Step S2111: the variable aperture switches the closed-loop controller to an open-loop controller.

[0361] Since the blades 22 of the variable aperture 10 need to be fully opened in the first position, 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 requires a larger driving force to ensure close contact and stable position between the blades 22. The driver 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 locate the target position. However, in the first position and the second position, due to the particularity of mechanical movement, the driver chip 133 needs to output a larger current to overcome the mechanical resistance and friction, resulting in a surge in the steady-state current of the variable aperture 10.

[0362] In this embodiment, the variable aperture 10 switches the closed-loop controller to an open-loop controller, and is designed in such a way that the control of the blade 22 by the driver chip 133 is switched from closed-loop control to open-loop control. In this way, the driver chip 133 no longer adjusts the control of the blade 22 in real time based on the position information feedback of the blade 22, thereby saving the electric energy consumed by the driver chip 133 in processing the feedback information, thereby reducing power consumption.

[0363] In this embodiment, due to the arrangement of the first magnetic member 121 and the second magnetic member 122, the first magnetic member 121 can ensure the stability of the carrier 21 in the thickness direction of the variable aperture 10 through the magnetic attraction between the first magnetic member 121 and the driving magnet 23, and the second magnetic member 122 can ensure the stability of the carrier 21 in the radial direction of the variable aperture 10 through the magnetic attraction between the first magnetic member 121 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 be driven by a small current to achieve the stability of the blade 22 in the first position or the second position, thereby reducing power consumption.

[0364] In this embodiment, it can be combined with reference to Fig.23A, since the second protrusion 213 of the carrier 21 abuts against the first side wall 1121 when the blade 22 is in the first position, the variable aperture 10 only needs to apply a force toward the first side wall 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 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. Therefore, the variable aperture 10 only needs to apply a force toward the second side wall 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 conducive to reducing power consumption.

[0365] It should be noted that after the variable aperture 10 is switched to the open-loop controller, the variable aperture 10 can switch from high current control to low current control while ensuring the stability of the blades 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 so as to be applied to the case where the variable aperture 10 is switched to the open-loop controller.

[0366] Step S2112, determining whether the current position of the blade is within a preset error range of the target position.

[0367] If yes, execute step S2113; if no, execute step S2114.

[0368] Step S2113: the variable aperture continues to control the blades through the open-loop controller.

[0369] It should be noted that Fig.30 In step S2141, “the variable aperture continues to control the blades by the first method” may refer to step S2113 of this embodiment, “the variable aperture continues to control the blades by the open-loop controller”.

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

[0371] Continue to step S2111.

[0372] In this embodiment, by executing steps S2112 and S2114, the situation in which the variable aperture 10 is not adjusted to the target position due to external interference can be dealt with during the adjustment process of the variable aperture 10, thereby making the adjustment of the aperture hole 221 more precise and more resistant to risks.

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

[0374] Step S2121: the variable aperture switches the PID controller to a PD controller.

[0375] In this embodiment, in 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 adjusts the three parameters of the proportional coefficient Kp, the integral coefficient Ki and the differential coefficient Kd to achieve precise control of the position of the blade 22. Since the adjustment of the integral coefficient Ki in the PID controller has saturation characteristics and hysteresis, the friction-resisting force current that is not originally needed is accumulated due to the existence of friction during the rotation of the carrier 21 relative to the base 11. After the blade 22 moves to the target position, the adjustment of the integral coefficient is turned off, that is, the integral output is turned off, and the PID controller is switched to a PD controller, thereby eliminating the friction-resisting force current, so as to reduce the steady-state current of the variable aperture 10, thereby reducing power consumption.

[0376] Can be combined with reference Fig.34 and Fig.35 The change of the steady-state current in the variable aperture 10 after the PID controller is switched to the PD controller is compared.

[0377] Fig.34 is a schematic diagram of steady-state current when the variable aperture 10 always uses a PID controller to control the blades in some embodiments; Fig.35 1 is a schematic diagram of steady-state current when the variable aperture 10 switches the PID controller to the PD controller at the target position in some embodiments. The horizontal axis in the figure represents the number of motors, that is, the number of variable apertures 10, and the vertical axis represents the steady-state current of the variable aperture 10. Different curves correspond to different positions of the blades. Among them, Z1, Z2, Z3, and Z4 can be included according to the position of the blade.

[0378] according to Fig.34 and Fig.35 , the average value of the steady-state current of the variable aperture 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] Blade position Fig.34 Steady-state current of variable aperture / mA Fig.35 Steady-state current of variable aperture / mA Z1 57.42 15.45 Z2 20.36 6.74 Z3 15.11 5.22 Z4 33.05 7.12

[0381] It can be seen from Table 1 that at multiple different positions of the blades, that is, at multiple different target positions, the variable aperture 10 switches the PID controller to a PD controller, which can significantly reduce the steady-state current in the variable aperture, thereby reducing power consumption.

[0382] It should be noted that when the positions of the carrier 21 and the blade 22 can be stabilized by setting the first magnetic member 121 and the second magnetic member 122, the first switching strategy can be adopted. Fig.31 Step S1121 "disconnecting the variable aperture control drive coil". When the first magnetic member 121 and the second magnetic member 122 cannot completely achieve the position stability of the carrier 21 and the blade 22, for example, when the external interference is strong, the first switching strategy can adopt the embodiment of Fig.32 In step S2121 “the variable aperture switches the PID controller to the PD controller”, the first magnetic attraction component 121 and the second magnetic attraction component 122 are cooperated to achieve the position stability of the carrier 21 and the blade 22 .

[0383] It should be noted that this embodiment Fig.33 The method S200 shown can achieve the stability of the position of the carrier 21 and the blade 22 without relying on the arrangement of the first magnetic attraction member 121 and the second magnetic attraction member 122. At this time, the first switching strategy no longer includes Fig.31 Step S1121 "Variable aperture control drive coil power is turned off" in the process.

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

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

[0386] Step S2123: the variable aperture continues to control the blades through the PD controller.

[0387] It should be noted that Fig.30 The “variable aperture continues to control the blades by the second method” in step S2142 may refer to the “variable aperture continues to control the blades by the PD controller” in step S2123 in this embodiment.

[0388] In step S2124, the variable aperture switches the PD controller to a PID controller, and controls the blades to adjust to the target position through the PID controller.

[0389] Continue to execute step S2121.

[0390] In this embodiment, by executing steps S2122 and S2124, the situation in which the variable aperture 10 is not adjusted to the target position due to external interference can be dealt with during the adjustment process of the variable aperture 10, thereby making the adjustment of the aperture hole 221 more precise and more resistant to risks.

[0391] The current position of the blade 22 can be determined by the Hall value measured by the Hall element, thereby determining whether the current position of the blade 22 is within a preset error range of the target position.

[0392] Please refer to Fig.28 , Fig.30 and Fig.36 , Fig.36 yes Fig.30 The control method shown is a schematic diagram of a specific flow chart in some other embodiments. It should be noted that: Fig.36 The control method shown does not show loop control.

[0393] In some embodiments, a control method S300 is provided, and the first switching strategy may include: 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 may 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 blades to be adjusted to the target position through a closed-loop controller.

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

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

[0399] In this embodiment, it is not necessary to determine whether it is the first position so far. The PID controller can be switched to a PD controller to eliminate the disturbance force current resisting the friction force, so as to reduce the steady-state current of the variable aperture 10 and thus reduce power consumption.

[0400] Step S340, determining whether the current position of the blade is within a preset error range of the target position.

[0401] If yes, execute step S350, if no, execute step S360.

[0402] Step S350: the variable aperture continues to control the blades through the PD controller.

[0403] It should be noted that Fig.30The "variable aperture continues to control the blades through the first method" in step S2141 and the "variable aperture continues to control the blades through the second method" in step S2142 may refer to the "variable aperture continues to control the blades through the PD controller" in step S350 of this embodiment.

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

[0405] Continue to execute step S330.

[0406] In this embodiment, by executing steps S340 and S360, the situation in which the variable aperture 10 is not adjusted to the target position due to external interference can be dealt with during the adjustment process of the variable aperture 10, so that the adjustment of the aperture hole 221 is more precise and has strong risk resistance.

[0407] The current position of the blade 22 can be determined by the Hall value measured by the Hall element, thereby determining whether the current position of the blade 22 is within a 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 by software, hardware or a combination of the two. When any of the above modules or units are implemented in software, the software exists in the form of computer program instructions and is stored in a memory, and a processor can be used to execute the program instructions and implement the above method flow. The processor may include but is not limited to at least one of the following: a central processing unit (CPU), a microprocessor, a digital signal processor (DSP), a microcontroller (MCU), or an artificial intelligence processor and other types of computing devices that run software, each of which may include one or more cores for executing software instructions to perform operations or processing. The processor may be built into an SoC (system on chip) or an application specific integrated circuit (ASIC), or it may be an independent semiconductor chip. In addition to the core used to execute software instructions for operations or processing in the processor, it may further include necessary hardware accelerators, such as field programmable gate arrays (FPGA), PLDs (programmable logic devices), or logic circuits that implement dedicated logic operations.

[0409] When the modules or units described in the present application are implemented in 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 the necessary software or be independent of the software to execute the above method flow.

[0410] When the modules or units described in this application are implemented using software, they can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. 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 a website site, a computer, a server, or a data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server, or data center. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or a data center that includes one or more available media integrations. The available medium can be a magnetic medium, (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state drive (SSD)), etc.

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

[0412] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0413] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

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

[0415] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0416] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0417] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other, and any combination of features in different embodiments is also within the protection scope of the present application. In other words, the multiple embodiments described above can also be arbitrarily combined according to actual needs.

[0418] It should be noted that all the above drawings are illustrative illustrations of the present application and do not represent the actual size of the product. Moreover, the size ratio relationship between the components in the drawings is not intended to limit the actual product of the present application.

[0419] The above are only some embodiments and implementation methods of the present application, and the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the technical scope disclosed in the present application can easily think of changes or substitutions, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A variable aperture (10), characterized in that: It comprises a base (11), a carrier (21), a plurality of blades (22), a driving coil (132), a driving magnet (23), a first magnetic attraction component (121) and a second magnetic attraction component (122); The carrier (21) is rotatably connected to the base (11), the blades (22) are connected to the base (11) and the carrier (21), and a plurality of blades (22) surround an aperture hole (221); The base (11) comprises a bottom plate (111) and a first peripheral side plate (112), wherein the first peripheral side plate (112) is connected to the periphery of the bottom plate (111), the base (11) has a first mounting hole (116), the first mounting hole (116) penetrates the first peripheral side plate (112) along the radial direction of the variable aperture (10), the driving coil (132) and the driving magnet (23) are both at least partially located 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 arranged opposite to each other 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 hole (221); The first magnetic attraction member (121) is installed on the base (11) and is located on a side of the driving coil (132) facing away from the driving magnet (23), and the first magnetic attraction member (121) and the driving magnet (23) are arranged opposite to each other 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 arranged opposite to each other along the radial direction of the variable aperture (10).

2. The variable aperture (10) according to claim 1, characterized in that: The base (11) further comprises a plurality of bearing platforms (114), wherein the bearing platforms (114) and the first peripheral side plate (112) are protrudingly arranged on the same side of the bottom plate (111), the bearing platforms (114) are connected to the inner side of the first peripheral side plate (112), the plurality of bearing platforms (114) are arranged at intervals along the circumference of the variable aperture (10), a first mounting groove (1141) is provided on a side of the bearing platform (114) away from the first peripheral side plate (112), and the bearing platform (114) has a first bearing surface (1142) facing away from the bottom plate (111); The variable aperture (10) further comprises a plurality of rolling elements (3), wherein one rolling element (3) is correspondingly installed in one of the first installation grooves (1141); The carrier (21) comprises a body (211) and a plurality of first protrusions (212); the body (211) is an annular structure; the body (211) comprises an inner annular surface (2111) and an outer annular surface (2112) disposed opposite to each other; the first protrusions (212) are connected to a side of the body (211) facing the bottom plate (111); the first protrusions (212) are closer to the inner annular surface (2111) than to the outer annular surface (2112); the surface of the body (211) facing the bottom plate (111) abuts against the first bearing surface (1142); and the surface of the first protrusions (212) facing the outer annular surface (2112) abuts against the rolling element (3).

3. The variable aperture (10) according to claim 2, characterized in that: The variable aperture (10) is applied to an electronic device (1000), and the variable aperture (10) satisfies: (F z -mg)μ1L1+F c μ2L2>1.2×(F r1 +F r2 ) (F c -mg) / (μ1F z )>1.2 Among them, F z is the magnetic attraction force of the first magnetic attraction member (121) on 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 between 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 member (122) on the driving magnet (23); μ2 is the friction coefficient between the first convex block (212) and the rolling member (3); L2 is the line distance between the contact point between the first convex block (212) and the rolling member (3) and the center of the carrier (21); F r1 F is the disturbance torque of the internal components of the electronic device (1000) on the variable aperture (10); r2 is the disturbance torque of the variable aperture (10) caused by the outside world.

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 the multiple first mounting holes (116) are arranged at intervals along the circumference of the variable aperture (10); The number of the driving magnet (23), the driving coil (132) and the first magnetic attraction component (121) is plural; one driving magnet (23) and one driving coil (132) are arranged corresponding to one first mounting hole (116); and one first magnetic attraction component (121) is arranged corresponding to one driving magnet (23).

5. The variable aperture (10) according to claim 4, characterized in that: A plurality of the first mounting holes (116) are evenly spaced and arranged along the circumference of the variable aperture (10).

6. The variable aperture (10) according to any one of claims 1 to 5, characterized in that: The first magnetic attraction member (121) is in the shape of an elongated strip, and within the rotational travel of the carrier (21) relative to the base (11), the first magnetic attraction member (121) and the driving magnet (23) are at least partially arranged opposite to each other.

7. The variable aperture (10) according to any one of claims 1 to 6, characterized in that: The variable aperture (10) further comprises a plurality of rolling elements (3), wherein the rolling elements (3) are located between the carrier (21) and the base (11); The number of the driving magnets (23) is plural, and the plurality of driving magnets (23) are arranged at intervals along the circumference of the variable aperture (10), and the second magnetic attraction member (122) is arranged corresponding to one of the plurality of driving magnets (23); The plurality of rolling elements (3) include a first rolling ball (31) and a second rolling ball (32); the first rolling ball (31) is closer to the second magnetic element (122) than the second rolling ball (32); 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).

8. The variable aperture (10) according to any one of claims 1 to 7, characterized in that: The base (11) further comprises a second peripheral side plate (113), wherein the second peripheral side plate (113) and the first peripheral side plate (112) are protrudingly arranged on the same side of the bottom plate (111), the bottom plate (111) has a first through hole (1111), the second peripheral side plate (113) is circumferentially connected to the periphery of the first through hole (1111), the second peripheral side plate (113) is arranged to form a second through hole (1131), the first through hole (1111), the second through hole (1131) and the aperture hole (221) are connected in sequence, the first peripheral side plate (112), the second peripheral side plate (113) and the bottom plate (111) are arranged to form a first installation space (115), and the first installation hole (116) is connected to the first installation space (115); The carrier (21) comprises a body (211) and a second protrusion (213), the body (211) is rotatably 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 driving magnet (23) is mounted on the body (211), and another part of the driving magnet (23) is mounted on the second protrusion (213); The second magnetic attraction member (122) is located in the first installation space (115) and is installed on the surface of the second peripheral side plate (113) facing the first peripheral side plate (112).

9. The variable aperture (10) according to 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 arranged opposite to each other 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; 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 9, characterized in that: The second magnetic attraction member (122) is in the shape of an elongated strip, and within the rotational travel of the carrier (21) relative to the base (11), the second magnetic attraction member (122) and the driving magnet (23) are at least partially arranged opposite to each other.

11. The variable aperture (10) according to claim 10, characterized in that: Along the circumferential direction of the variable aperture (10), the width of the two ends of the second magnetic attraction member (122) is greater than the width of the middle portion of the second magnetic attraction member (122).

12. The variable aperture (10) according to any one of claims 1 to 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 connected; 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 driving magnet (23) is located in the first sub-hole (1161); and the driving coil (132) is located in the second sub-hole (1162); The variable aperture (10) further comprises a circuit board (131), wherein the circuit board (131) is mounted on a side of the bottom plate (111) facing away from the carrier (21), the circuit board (131) covers the second sub-hole (1162), the driving coil (132) is mounted on the circuit board (131) 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) facing away from the driving magnet (23).

13. The variable aperture (10) according to claim 12, characterized in that: The bottom plate (111) has a second mounting groove (1112), the opening of the second mounting groove (1112) faces away from the driving magnet (23), the second mounting groove (1112) is connected to the second sub-hole (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 13, characterized in that: The base (11) has a plurality of first convex columns (118), and the plurality of first convex columns (118) are arranged at intervals along the circumference of the variable aperture (10); The carrier (21) has a plurality of second convex columns (215), the plurality of second convex columns (215) are arranged at intervals along the circumference of the variable aperture (10), and the second convex columns (215) are farther away from the center of the variable aperture (10) than the first convex columns (118); The blade (22) has a rotating hole (222) and a sliding hole (223); the rotating hole (222) is circular and sleeved on the first convex column (118); the sliding hole (223) is arc-shaped and sleeved on the second convex column (215); the carrier (21) is used to drive the blade (22) to rotate along the first convex column (118) via the second convex column (215) so as to change the aperture size of the aperture hole (221).

15. The variable aperture (10) according to any one of claims 1 to 14, characterized in that: The variable aperture (10) further comprises a decorative cover (4), the decorative cover (4) having a fourth through hole (41), the decorative cover (4) being mounted on the base (11) and located on a side of the blade (22) away from the carrier (21), the fourth through hole (41) being connected to the aperture hole (221), and the aperture of the fourth through hole (41) being greater than or equal to the maximum aperture of the aperture hole (221).

16. The variable aperture (10) according to any one of claims 1 to 15, characterized in that: During the process of adjusting 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), characterized in that: It comprises a lens assembly (20) and a variable aperture (10) according to any one of claims 1 to 16, wherein the variable aperture (10) is fixedly mounted on the light incident side of the lens assembly (20).

18. An electronic device (1000), characterized in that: It comprises a housing (300) and a camera module (100) as claimed in claim 17, wherein the camera module (100) is installed in 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 driving coil (132), a driving magnet (23), and a magnetic attraction component (12); The carrier (21) is rotatably connected to the base (11), the blades (22) are connected to the base (11) and the carrier (21), and a plurality of blades (22) surround an aperture hole (221); 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 arranged opposite to each other 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), so as to change the aperture size of the aperture hole (221); The magnetic attraction component (12) is installed on the base (11), and the magnetic attraction component (12) and the driving magnet (23) are arranged opposite to each other; The method comprises: The variable aperture (10) detects a first instruction, wherein the first instruction is used to instruct the blade (22) to be adjusted 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 includes: The closed-loop controller is a proportional-integral-differential PID controller, and the variable aperture (10) switches the PID controller to a proportional-differential 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 hole (221) has a maximum aperture, and when the target position is at the second position, the aperture hole (221) has a minimum aperture; If not, the first switching strategy includes: the closed-loop controller is the PID controller, and the variable aperture (10) switches the PID controller to the PD controller; If yes, then the first switching strategy includes: 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 blade (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 according to claim 20 or 21, characterized in that After executing the first switching strategy, the method further includes: In the case where the first instruction is not detected, when the timing duration of the variable aperture (10) reaches a preset duration, determining 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 blades (22) through the PD controller; If so, the variable aperture (10) continues to control the blades (22) via the open-loop controller.

23. An electronic device (1000), characterized in that: include: 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 (1000) to perform a method as described in any one of claims 19 to 22.

24. A computer-readable storage medium, characterized in that: The storage medium stores a program or an instruction, and when the program or the instruction is executed, the method according to any one of claims 19 to 22 is implemented.

25. A computer program product, characterized in that The computer program product stores a program or an instruction, and when the program or the instruction is executed, the method according to any one of claims 19 to 22 is implemented.

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