CN115174815B

CN115174815B - Camera module, control method of camera module and electronic equipment

Info

Publication number: CN115174815B
Application number: CN202210916334.8A
Authority: CN
Inventors: 余强模
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2022-08-01
Filing date: 2022-08-01
Publication date: 2024-02-20
Anticipated expiration: 2042-08-01
Also published as: CN115174815A

Abstract

The application discloses a camera module, a control method of the camera module and electronic equipment, and belongs to the field of camera module manufacturing. The camera module includes: lens and motor, the lens with the motor is connected, the motor includes: the lens comprises a magnet, a coil, an elastic piece and a stretching piece, wherein one end of the elastic piece is connected with the lens through the magnet under the condition that the magnet is connected with the lens, and the other end of the elastic piece is connected with the coil through the stretching piece; when the coil is connected with the lens, one end of the elastic piece is connected with the lens through the coil, and the other end of the elastic piece is connected with the magnet through the stretching piece; when the elastic modulus of the elastic piece is changed, the stretching piece stretches to drive the elastic piece to deform along the opposite direction of the target direction, so that the elastic modulus of the elastic piece is compensated, and the target direction is the direction in which the elastic piece drives the lens to move.

Description

Camera module, control method of camera module and electronic equipment

Technical Field

The application belongs to the field of camera module manufacturing, and particularly relates to a camera module, a control method of the camera module and electronic equipment.

Background

With the development of mobile terminals, the photographing function of the mobile terminals has become a core function frequently used in daily life. In the shooting function of the mobile terminal, the focusing capability of the camera module directly influences the final imaging effect. The focusing technical means is mainly realized by a focusing motor of the camera module, and the focusing motor drives a lens of the camera module to move so as to change the relative position between the lens and an image sensor in the camera module, thereby realizing shooting focusing.

The current focus motor is mainly a voice coil motor. A voice coil motor is a device that converts electrical energy into mechanical energy, which can achieve linear and limited-swing-angle motion. The structure of voice coil motor mainly includes: magnet, coil and spring leaf. The magnet and the coil are oppositely arranged, and the spring piece is fixedly connected with the magnet, the coil and the lens respectively. In the process of starting focusing of the camera module, the coil of the focusing motor receives external current, the current flows through the coil to generate a magnetic field, and the magnetic field interacts with the magnetic field generated by the magnet to drive the coil to move. Thereby drive the spring leaf that is connected with coil fixed and produce deformation displacement, and then drive the camera lens and remove, change the relative position between camera lens and the image sensor, realize shooting focusing. When focusing is completed, the ideal state requires that the relative position between the lens and the image sensor is unchanged so as to ensure the focusing effect in the shooting process.

However, when the camera module works, a large amount of heat is generated, and the heat can cause the temperature inside the camera module to rise. The spring plate is generally made of metal, which leads to a temperature rise of the spring plate along with an increase of the working time of the camera module. The elastic modulus of the metal can be reduced along with the increase of the temperature, so that the deformation amount of the spring piece can be increased along with the reduction of the elastic modulus when the spring piece is subjected to the same acting force. That is, as the working time of the camera module increases, the temperature inside the camera module increases, and when the spring piece receives the same acting force of the coil, the deformation amount of the spring piece increases, so that the change amount of the relative position between the lens and the image sensor increases, the lens deviates from the original focusing position, the focusing is caused, and the focusing accuracy is reduced.

Disclosure of Invention

An object of the embodiment of the application is to provide a camera module, a control method of the camera module and electronic equipment, which can solve the problem of lower focusing accuracy of a mobile terminal caused by the reduction of the elastic modulus of a spring piece due to the increase of the temperature of the spring piece in the camera module.

In a first aspect, an embodiment of the present application provides a camera module, the camera module includes:

Lens and motor, the lens with the motor is connected, the motor includes: a magnet, a coil, an elastic member and a stretching member,

when the magnet is connected with the lens, one end of the elastic piece is connected with the lens through the magnet, and the other end of the elastic piece is connected with the coil through the stretching piece;

when the coil is connected with the lens, one end of the elastic piece is connected with the lens through the coil, and the other end of the elastic piece is connected with the magnet through the stretching piece;

when the elastic modulus of the elastic piece is changed, the stretching piece stretches to drive the elastic piece to deform along the opposite direction of the target direction, so that the elastic modulus of the elastic piece is compensated, and the target direction is the direction in which the elastic piece drives the lens to move.

In a second aspect, an embodiment of the present application provides a control method of a camera module, applied to a processor of an electronic device, where the electronic device includes the camera module according to any one of the first aspect, the method includes:

receiving a first input;

and responding to the first input, starting the camera module, controlling the stretching piece to stretch, so that the stretching piece drives the elastic piece to deform along the opposite direction of the target direction, compensating the elastic modulus of the elastic piece, and enabling the target direction to be the direction in which the elastic piece drives the lens to move.

In a third aspect, an embodiment of the present application provides an electronic device, including: the camera module according to any one of the first aspect and the second aspect, wherein the processor is configured to implement the control method of the camera module according to any one of the second aspect and the second aspect.

In a fourth aspect, an embodiment of the present application provides an electronic device, including a camera module as in any one of the preceding first aspects, a processor, and a memory storing a program or instructions executable on the processor, the program or instructions implementing the steps of the method as in the second aspect when executed by the processor.

In a fifth aspect, embodiments of the present application provide a readable storage medium having stored thereon a program or instructions which when executed by a processor implement the steps of the method according to the second aspect.

In a sixth aspect, embodiments of the present application provide a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and where the processor is configured to execute a program or instructions to implement a method according to the second aspect.

In a seventh aspect, embodiments of the present application provide a computer program product stored in a storage medium, the program product being executable by at least one processor to implement the method according to the second aspect.

In an embodiment of the application, the camera module includes a lens and a motor connected with the lens. The motor comprises a magnet, a coil, an elastic piece and a stretching piece. Under the condition that the magnet is connected with the coil, one end of the elastic piece is connected with the lens through the magnet, and the other end of the elastic piece is connected with the coil through the stretching piece. Under the condition that the coil is connected with the lens, one end of the elastic piece is connected with the lens through the coil, and the other end of the elastic piece is connected with the magnet through the stretching piece. The stretching piece can stretch to drive the elastic piece to deform along the direction opposite to the direction in which the elastic piece drives the lens to move. Therefore, in the process of starting focusing of the camera module, if the elastic modulus of the spring piece changes due to the temperature rise in the camera module, the stretching piece can be controlled to stretch to provide tensile stress for the elastic piece so as to change the damping of the elastic piece, and the lower elastic modulus of the elastic piece caused by the temperature rise in the camera module along with the increase of the working time is compensated, so that the larger deformation of the elastic piece caused by the lower elastic modulus is reduced. The deflection of the elastic piece driving the lens to move is reduced, the deflection of the position of the lens after moving and the original focusing position is reduced, and the focusing accuracy is improved.

Drawings

FIG. 1 is a schematic diagram of a camera module in the related art;

fig. 2 is a schematic structural diagram of a camera module according to an embodiment of the present application;

fig. 3 is a schematic partial structure diagram of a camera module according to an embodiment of the present application;

fig. 4 is a block diagram of an electronic device according to an embodiment of the present application;

fig. 5 is a flowchart of a control method of a camera module according to an embodiment of the present application;

fig. 6 is a flowchart of another control method of a camera module according to an embodiment of the present application;

fig. 7 is a block diagram of a control device of a camera module according to an embodiment of the present application;

fig. 8 is a block diagram of an electronic device according to an embodiment of the present application;

fig. 9 is a schematic hardware structure of an electronic device according to an embodiment of the present application.

Detailed Description

Technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type and not limited to the number of objects, e.g., the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

The camera module and the control method of the camera module provided in the embodiment of the application are described in detail below by specific embodiments and application scenes thereof with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a camera module according to the related art. As shown in fig. 1, the present camera module 100 generally includes: lens 101, motor 102, and image sensor (sensor) 105. The motor 102 and the image sensor 105 are located inside the camera module 100, and at least part of the lens 101 is also located inside the camera module 100. The motor 101 includes a magnet 1021, a coil 1022, and an elastic member 1023. Wherein the magnet 1021 and the coil 1022 are disposed opposite to each other. The elastic member 1023 is fixedly connected to the magnet 1021, the coil 1022, and the lens 101, respectively. The spring 1023 may be a leaf spring.

During the process of starting focusing of the camera module 100, the coil 1022 of the motor 102 receives an external current, and the current flows through the coil 1022 to generate a magnetic field, and the magnetic field interacts with the magnetic field generated by the magnet 1021 to drive the coil 1022 to move. Thereby driving the elastic member 1023 fixedly connected with the coil 1022 to deform, and further driving the lens 101 to move, changing the relative position between the lens 101 and the image sensor 105, and realizing shooting focusing.

However, as the working time of the camera module increases, the temperature inside the camera module increases, and when the elastic element receives the same acting force of the coil, the deformation amount of the elastic element increases, so that the change amount of the relative position between the lens and the image sensor increases, the lens deviates from the original focusing position, out of focus is caused, and the focusing accuracy is reduced.

The embodiment of the application provides a camera module, can solve among the aforesaid correlation technique because of the temperature rise of the interior elastic component of camera module, lead to the lower problem of accuracy of focusing of camera module that the elastic modulus of elastic component reduces and cause. Fig. 2 is a schematic structural diagram of a camera module according to an embodiment of the present application. As shown in fig. 2, the camera module 100 includes:

Lens 101 and motor 102. The lens 101 is connected to a motor 102. The motor 102 may include: a magnet 1021, a coil 1022, an elastic member 1023, and a tension member 1024. Alternatively, the elastic member 1023 may be a leaf spring, a spring or a leaf spring, or the like. The tensile member 1024 may be an electro-deformable member or a magneto-deformable member, etc.

Wherein the magnet 1021 is disposed opposite to the coil 1022. When the coil 1022 is connected to the lens 101, one end of the elastic member 1023 is connected to the lens 101 through the coil 1022, and the other end of the elastic member 1023 is connected to the magnet 1021 through the tension member 1024. Or, in the case that the magnet is connected with the lens, one end of the elastic member is connected with the lens through the magnet, and the other end of the elastic member is connected with the coil through the stretching member. In fig. 2, the coil 1022 is fixedly connected to the lens 101, and the stretching member 1024 is connected between the magnet 1021 and the elastic member 1023.

When the elastic modulus of the elastic member 1023 changes, the stretching member 1024 stretches and contracts to drive the elastic member 1023 to deform in the opposite direction to the target direction, so as to compensate the elastic modulus of the elastic member 1023. The target direction is the direction in which the elastic member 1023 drives the lens 101 to move.

In this embodiment, the magnet 1021 in the camera module 100 may be fixedly connected with the lens 101. Alternatively, the coil 1022 may be fixedly connected to the lens 101.

Optionally, in the case that the magnet 1021 is fixedly connected with the lens 102, in the process of starting focusing, the current flows through the magnetic field generated by the coil 1022, and the interaction of the current and the magnetic field of the magnet 1021 can drive the magnet 1021 to move, so as to drive the lens 101 fixedly connected with the magnet 1021 to move, change the position of the lens 101, and realize shooting focusing. Under the condition that the coil 1022 is fixedly connected with the lens 101, in the process of starting focusing, current flows through a magnetic field generated by the coil 1022 and interacts with the magnetic field of the magnet 1021, so that the coil 1022 can be driven to move, the lens 101 fixedly connected with the coil 1022 is further driven to move, the position of the lens 101 is changed, and shooting focusing is achieved.

In the camera module shown in fig. 2, when the camera module 100 starts focusing, the acting force between the magnet 1021 and the coil 1022 of the motor 102 drives the elastic member 1023 to deform. By controlling the stretching member 1023 to stretch and contract, the elastic member 1023 is driven to deform in the opposite direction to the target direction. The tensile member 1024 provides tensile stress to the elastic member 1023 to change the damping of the elastic member, compensate for the lower elastic modulus of the elastic member 1023 caused by the temperature increase inside the camera module, and further reduce the larger deformation of the spring piece caused by the lower elastic modulus. In the case where the tensile member 1024 is an electro-deformable member, by applying a voltage to the tensile member 1024, the tensile member 1024 is energized and deformed, and the elastic member 1023 is driven to deform in the opposite direction to the target direction. For example, in the process of starting focusing by the camera module, the acting force between the magnet 1021 and the coil 1022 of the motor 102 drives the elastic member 1023 to deform along the target direction. As the working time of the camera module 100 increases, the temperature inside the camera module 100 increases, so that the temperature of the elastic member 1023 increases. The same force between the magnet 1021 and the coil 1022 of the motor 102 will drive the elastic member 1023 to generate a larger deformation amount along the target direction. By applying a voltage to the tensile member 1024, the tensile member 1024 deforms, and drives the elastic member 1023 to deform in the opposite direction of the target direction, so as to reduce the larger deformation of the elastic member in the target direction.

Alternatively, in the case where the tension member 1024 is an electro-deformable member, the direction of the component of the deformation force of the tension member 1024 may be opposite to the target direction in the case where the tension member 1024 is energized. Alternatively, in the event that the tension member 1024 is energized, the direction of deformation of the tension member 1024 may be opposite the target direction. That is, the direction of the deformation force of the tension member 1024 is opposite to the target direction.

In summary, the camera module provided in the embodiments of the present application includes a lens and a motor connected to the lens. The motor comprises a magnet, a coil, an elastic piece and a stretching piece. Under the condition that the magnet is connected with the coil, one end of the elastic piece is connected with the lens through the magnet, and the other end of the elastic piece is connected with the coil through the stretching piece. Under the condition that the coil is connected with the lens, one end of the elastic piece is connected with the lens through the coil, and the other end of the elastic piece is connected with the magnet through the stretching piece. The stretching piece can stretch to drive the elastic piece to deform along the direction opposite to the direction in which the elastic piece drives the lens to move. Therefore, in the process of starting focusing of the camera module, if the elastic modulus of the spring piece changes due to the temperature rise in the camera module, the stretching piece can be controlled to stretch to provide tensile stress for the elastic piece so as to change the damping of the elastic piece, and the lower elastic modulus of the elastic piece caused by the temperature rise in the camera module along with the increase of the working time is compensated, so that the larger deformation of the elastic piece caused by the lower elastic modulus is reduced. The deflection of the elastic piece driving the lens to move is reduced, the deflection of the position of the lens after moving and the original focusing position is reduced, and the focusing accuracy is improved.

Optionally, the camera module 100 may further include a housing and a temperature sensor 103. The motor 102 is located in the housing. At least part of the lens 101 is located in the housing. The temperature sensor 103 is mounted inside the housing. The temperature sensor 103 is used to detect the temperature in the housing. The amount of temperature change in the housing from the initial temperature is used to determine the amount of stretch in the stretch member 1024. The initial temperature is the temperature inside the camera module 100 when it is started. Since the temperature variation in the camera module is related to the variation of the elastic modulus of the elastic member, the temperature variation in the camera module affects the temperature of the elastic member. Therefore, the compensation accuracy of the elastic modulus of the elastic piece can be improved according to the stretching amount of the stretching piece determined by the temperature change amount inside the camera module, the adjustment accuracy of the deflection of the elastic piece caused by the lower elastic modulus can be improved, the adjustment accuracy of the deflection of the elastic piece for driving the lens to move can be further improved, and the focusing accuracy can be improved.

In the case that the tensile member is an electro-deformation member, the deformation amount of the electro-deformation member is related to the voltage applied to the electro-deformation member, and the temperature change amount inside the camera module affects the temperature of the elastic member. Therefore, the compensation accuracy of the elastic modulus of the elastic piece can be improved according to the energizing voltage of the stretching piece determined by the temperature variation in the camera module, the adjustment accuracy of the deviation amount of the elastic piece driving the lens to move is further improved, and the focusing accuracy is improved.

In this embodiment, the temperature variation in the camera module is proportional to the voltage applied to the electro-deformation element. That is, the greater the amount of change in the current temperature of the elastic member compared to the initial temperature, the greater the voltage that energizes the electro-deformation member.

Alternatively, the elastic modulus K of the elastic member and the temperature change amount Tx satisfy the first formula. The first formula is: k=k0-a×tx. Wherein K is the elastic modulus of the elastic piece, K0 is the initial elastic modulus of the elastic piece at the initial temperature, a is the elastic modulus temperature coefficient of the elastic piece, and Tx is the temperature variation of the current temperature of the elastic piece compared with the initial temperature.

The elastic modulus K of the elastic piece and the damping F of the elastic piece meet a second formula. The second formula is kxf=m. Wherein F is the damping of the elastic member, that is, the tensile stress applied by the electro-deformation member to the elastic member, that is, the deformation force of the electro-deformation member. M is the equivalent elastic modulus of the elastic member, and the value of the equivalent elastic modulus is determined by the material of the elastic member.

The voltage V applied to the electro-deformation element and the deformation force F of the electro-deformation element satisfy a third formula. The third formula is v=h×f. Wherein V is the voltage applied to the electro-deformation element, h is the electrostriction coefficient of the electro-deformation element, and F is the deformation force of the electro-deformation element.

Based on the first equation, the second equation, and the third equation, it is known that the voltage V for energizing the electro-deformation element satisfies the fourth equation. The fourth formula is v=m×h/(K0-a×tx). The accuracy of the tensile stress applied to the elastic member can be improved by energizing the electrically deformable member with the voltage determined based on the fourth formula. Therefore, the compensation precision of the elastic modulus of the elastic piece is further improved, the adjustment precision of the larger deformation amount of the elastic piece caused by the lower elastic modulus is improved, and the focusing accuracy is improved.

In embodiments of the present application, the temperature sensor may include a temperature dependent resistor. The resistance value of the temperature-dependent resistor changes with the change of the detected temperature. Under the condition that the temperature sensor is a temperature-dependent resistor, the temperature sensor can convert the voltage of the temperature-dependent resistor into a temperature value so as to realize the detection of the temperature inside the camera module.

Wherein, the resistance Rx of the temperature-dependent resistor and the corresponding temperature T satisfy the fifth formula. The fifth formula is rx=r0×exp [ Bn (1/T-1/T0) ]. Wherein Rx is the resistance of the temperature-dependent resistor. R0 is the standard resistance value of the temperature-dependent resistor, namely the resistance value of the temperature-dependent resistor at normal temperature (25 ℃). exp represents a logarithmic function based on e. Bn is a standard parameter of the temperature sensitive resistor. T0 is normal temperature.

In this embodiment of the present application, the stretching member may also be a magnetically deformable member. In the case where the tensile member is a magnetically deformable member, an excitation coil is provided around the magnetically deformable member. The excitation coil is electrified to enable the excitation coil to provide a magnetic field with variable amplitude, so that the magneto-deformable element is driven to stretch. The deformation amount of the magneto-deformable element is related to the current applied to the exciting coil, and the temperature change amount inside the camera module can influence the temperature of the elastic element. Therefore, the energizing current of the exciting coil can be determined according to the temperature variation in the camera module, accurate control of the expansion and contraction amount of the magneto-deformable part is achieved, the compensation precision of the elastic modulus of the elastic part is improved, the adjustment precision of the deviation amount of the elastic part driving the lens to move is further improved, and the focusing accuracy is improved.

Optionally, with continued reference to fig. 2, the motor includes a frame structure 1025. The frame structure 1025 may be coupled to the magnet 1021 to form a cavity. The temperature sensor 103 may be installed in the cavity to accurately detect the temperature of the elastic member and determine the temperature variation of the elastic member.

Further alternatively, the temperature sensor 103 may be provided adjacent to the elastic member 1023. The temperature sensor is arranged close to the elastic piece so as to ensure the accuracy of detecting the temperature of the elastic piece. Illustratively, the motor 102 may include two spring members 1023 connected to both sides of the magnet 2021 and the coil 2022. The magnet 1021 and the elastic member 1023 on the side of the coil 1022 are closer to the frame structure 1025. The temperature sensor 103 may be mounted on the frame structure 1025 adjacent to the spring 1023.

In this embodiment, referring to fig. 2 and fig. 3, the camera module 100 may further include: a resilient base 104. In the case where the elastic member 1023 is connected to the magnet 1021 through the tension member 1024, the tension member 1024 is connected to the magnet 1021 through the elastic base 104. Alternatively, in the case where the elastic member 1023 is connected to the coil 1022 through the tension member 1024, the tension member 1024 is connected to the coil 1022 through the elastic base 104.

When the elastic modulus of the elastic member 1023 changes, the stretching member 1024 drives the elastic base 104 to deform. The resilient base 104 is used to provide a deformation margin for the stretching member 1024, i.e., to provide a stretchable space for the stretching member 1024. The resilient base 104 also serves to secure the tension member 1024.

Optionally, the motor 102 of the camera module 100 further includes: a first fixing piece and a second fixing piece. Referring to fig. 2 and 3, in the case where the coil 1022 is coupled to the lens 101, one end of the elastic member 1023 is coupled to the coil 1022 through the first fixing member 1026. The other end of the elastic member 1023 is connected to the elastic base 104 via a tension member 1024. The elastic base 104 is connected to the magnet 1021 via the second fixing member 1027. Thus, the first fixing member is used for fixing one side of the elastic member connected with the coil. The second fixing piece is used for fixing one side of the stretching piece, which is connected with the magnet.

Or, in the case that the magnet is connected with the lens, one end of the elastic member is fixedly connected with the magnet through the first fixing member. The other end of the elastic piece is connected with the elastic base through the stretching piece. The elastic base is fixedly connected with the coil through a second fixing piece. Thus, the first fixing piece is used for fixing one side of the elastic piece connected with the magnet, and the second fixing piece is used for fixing one side of the elastic base connected with the coil.

In this embodiment, first mount 1026 and second mount 1027 can also be coupled to frame structure 1025, as shown in FIG. 2. The first mount 1026, the second mount 1027, the magnet 1024, and the frame structure 1025 are joined to form a space having an opening. The lens can be arranged in the opening, and the light emitting side of the lens is positioned in the opening.

Alternatively, the shape of the magnet 1021, the coil 1022, and the elastic member 1023 in the motor 102 may be annular. The magnet 1021, the coil 1022, and the inner ring of the elastic member 1023 communicate. In an alternative implementation, the tensile member 1024 is ring-shaped in shape, and the tensile member 1024 is sleeved on the elastic member 1023. Or, in another alternative implementation, the spring 1023 is annular in shape. In the case where the number of the tension members 1024 is plural, the tension members 1024 are arranged at intervals in the circumferential direction of the elastic member 1023. Illustratively, the number of the tension members 1024 is 4, and four tension members 1024 are uniformly arranged along the circumferential direction of the elastic member 1023.

In this embodiment, taking an optional structural situation of the camera module 100 shown in fig. 2 as an example, the camera module 100 provided in this embodiment of the present application is further described. Illustratively, the tensile member is assumed to be an electro-deformable member. The camera module 100 includes a lens 101, a motor 102, a temperature sensor 103, an image sensor 105, and a third mount 106. The lens 101 is connected to the motor 102, and the temperature sensor 103 is mounted in the motor 102. The image sensor 105 is fixed in the camera module 100 by a third fixing member 106.

The motor 102 may include two elastic members 1023, a magnet 1021, a coil 1022, two electro-deformable members 1024, a frame structure 1025, two first fixing members 1026, two second fixing members 1027, a lens holder 1028, and an elastic base 104. The lens holder 1028 is connected to the two first fixing members 1026, respectively. The lens holder 1028 is used to fix the lens 101.

The shape of the magnet 1021, the coil 1022, the two elastic members 1023, the two electro-deformable members 1024, the two first fixing members 1026, the two second fixing members 1027, the lens holder 1028, and the elastic base 104 may be annular. And the magnet 1021, the coil 1022, the two elastic members 1023, the two electro-deformable members 1024, the two first fixing members 1026, the two second fixing members 1027, and the inner ring of the lens holder 1028 communicate with the opening of the frame structure 1025. A second mount 1027, a resilient base 104, an electrically deformable member 1024, a resilient member 1023, and a first mount 1026 are sequentially nested to form a set of electrically conductive components. Two sets of electro-active components are connected across the electromagnet 1021 and the coil 1022.

When the electric deformation member 1024 is electrified according to the temperature variation in the camera module, the electric deformation member 1024 deforms to drive the elastic member 1023 connected with the electric deformation member 1024 to deform along the opposite direction of the target direction, so as to compensate the elastic modulus of the elastic member 1023.

Referring to fig. 4, a block diagram of an electronic device according to an embodiment of the present application is shown. As shown in fig. 4, the electronic device 40 includes: a processor 200 and a camera module 100. The processor 200 is connected to the camera module 100. The camera module 100 is any one of the camera modules 100 provided in the embodiments of the present application.

The processor 200 is configured to start the camera module, and when the elastic modulus of the elastic member of the camera module changes, control the stretching member to stretch, so that the stretching member drives the elastic member to deform along the opposite direction of the target direction, and compensate the elastic modulus of the elastic member. The target direction is the direction in which the elastic piece drives the lens to move.

Optionally, in the case that the tensile member is an electro-deformable member, the electronic device 40 further includes a power module 300. The power module 300 is connected to the processor 200 and the electro-deformable member in the camera module 100, respectively. The processor 200 is further configured to start the camera module, and when the elastic modulus of the elastic member of the camera module changes, control the power module 300 to energize the electro-deformation member to control the stretching member to stretch.

Further alternatively, camera module 100 includes a temperature sensor. The processor 200 is further configured to start the camera module, obtain a temperature in the camera module detected by the temperature sensor, calculate a voltage corresponding to a temperature variation of the temperature compared with the initial temperature when the temperature is greater than the initial temperature, and control the power module to apply the voltage to the tensile member. The initial temperature is the temperature inside the camera module when starting.

In this embodiment, the processor 200 may periodically or in real time acquire the temperature in the camera module 100 detected by the temperature sensor when detecting that the camera module 100 is started. The temperature in the camera module 100 obtained when the processor detects that the camera module 100 is started is an initial temperature. The processor 200 may compare the magnitude of the acquired temperature to the initial temperature. In the case where the temperature is different from the initial temperature, it is determined that the elastic modulus of the elastic member is changed. When the temperature is greater than the initial temperature, indicating that the current elastic modulus of the elastic member is lower, the processor 200 calculates a voltage corresponding to a temperature variation of the temperature compared with the initial temperature, and controls the power module to apply the voltage to the tensile member. Wherein the temperature change is proportional to the voltage.

Optionally, the processor 200 is further configured to calculate a temperature variation amount of the temperature compared to the initial temperature in the case that the temperature is greater than the initial temperature after acquiring the temperature in the camera module 100 detected by the temperature sensor. The voltage is calculated based on the equivalent elastic modulus of the elastic member, the electrostriction coefficient of the electrostriction member, the initial elastic modulus of the elastic member at the initial temperature, the elastic modulus temperature coefficient of the elastic member and the temperature variation. It should be noted that, the implementation manner of calculating the voltage by the processor 200 based on the equivalent elastic modulus of the elastic member, the electrostriction coefficient of the electrostriction member, the initial elastic modulus of the elastic member at the initial temperature, the elastic modulus temperature coefficient of the elastic member, and the temperature variation may refer to the calculation manner of the fourth formula, which is not described in detail in the embodiment of the present application.

In the embodiment of the present application, in the case that the tensile member is a magnetically deformable member, the electronic device 40 further includes a power module 300. The power module 300 is connected to the processor 200 and the excitation coil surrounding the magneto-deformable element in the camera module 100, respectively. The processor 200 is further configured to start the camera module, and when the elastic modulus of the elastic member of the camera module changes, control the power module 300 to energize the exciting coil to control the stretching member to stretch. Optionally, where the camera module 100 includes a temperature sensor, the processor 200 may be further configured to activate the camera module to obtain a temperature in the camera module detected by the temperature sensor, and determine a current to be applied to the magneto-deformable element according to a temperature variation amount compared with an initial temperature when the temperature is greater than the initial temperature, and control the power module to apply the current to the magneto-deformable element. The initial temperature is the temperature inside the camera module when starting.

In summary, the electronic device provided in the embodiment of the present application includes a processor and a camera module. The camera module comprises a lens and a motor connected with the lens. The motor comprises a magnet, a coil, an elastic piece and a stretching piece. Under the condition that the magnet is connected with the coil, one end of the elastic piece is connected with the lens through the magnet, and the other end of the elastic piece is connected with the coil through the stretching piece. Under the condition that the coil is connected with the lens, one end of the elastic piece is connected with the lens through the coil, and the other end of the elastic piece is connected with the magnet through the stretching piece. The stretching piece can stretch to drive the elastic piece to deform along the direction opposite to the direction in which the elastic piece drives the lens to move. Therefore, in the process of starting focusing of the camera module, if the elastic modulus of the spring piece changes due to the temperature rise in the camera module, the stretching piece can be controlled to stretch to provide tensile stress for the elastic piece so as to change the damping of the elastic piece, and the lower elastic modulus of the elastic piece caused by the temperature rise in the camera module along with the increase of the working time is compensated, so that the larger deformation of the elastic piece caused by the lower elastic modulus is reduced. The deflection of the elastic piece driving the lens to move is reduced, the deflection of the position of the lens after moving and the original focusing position is reduced, and the focusing accuracy is improved.

Fig. 5 is a flowchart illustrating a control method of a camera module according to an embodiment of the present application. The control method of the camera module is applied to a processor of electronic equipment, and the electronic equipment can be the electronic equipment shown in fig. 4. The electronic device comprises the camera module shown in fig. 2. By way of example, the electronic device may be a terminal, a personal computer, or a wearable device, etc. As shown in fig. 5, the control method of the camera module includes:

step 501, a first input is received.

In this embodiment of the present application, the first input is used to start the camera module of the electronic device. The first input may be performed if the user wants to activate the camera module of the electronic device. Alternatively, the electronic device may be displayed with a camera function identification. The first input may be a first input identified for the camera function. By way of example, the first input may be in the form of a click, a long press, a swipe, a voice, or the like. Taking the first input as a click input as an example, the user may click on the image capturing function identifier, so that the electronic device receives the click input for the image capturing function identifier, thereby executing the subsequent steps.

Step 502, responding to a first input, starting the camera module, and controlling the stretching piece to stretch when the elastic modulus of the elastic piece changes, so that the stretching piece drives the elastic piece to deform along the opposite direction of the target direction, and compensating the elastic modulus of the elastic piece. The target direction is the direction in which the elastic piece drives the lens to move.

In this embodiment of the application, after the camera module is started, the electronic device may periodically or in real time detect whether the elastic modulus of the elastic element changes. So as to control the stretching piece to stretch when the elastic modulus of the elastic piece changes.

Optionally, when the tensile member in the camera module is an electrically deformable member, the electronic device may control the implementation process of expansion and contraction of the tensile member when the elastic modulus of the elastic member changes, where the implementation process may include: and the electronic equipment acquires the temperature in the camera module detected by the temperature sensor. And under the condition that the temperature is larger than the initial temperature, calculating the voltage corresponding to the temperature variation of the temperature compared with the initial temperature, and controlling the conduction voltage of the electro-deformation element.

Or, when the stretching member in the camera module is a magnetically deformable member, the electronic device may control the stretching process of the stretching member when the elastic modulus of the elastic member changes, where the stretching process may include: and the electronic equipment acquires the temperature in the camera module detected by the temperature sensor. And under the condition that the temperature is larger than the initial temperature, determining the current to be applied to the exciting coil surrounding the magnetic deformation piece according to the temperature variation compared with the initial temperature, and controlling the conduction current of the magnetic deformation piece. The initial temperature is the temperature inside the camera module when the camera module is started.

It should be noted that, when the elastic modulus of the elastic element of the electronic device changes, the implementation manner of controlling the stretching element to stretch may be described with reference to the related functions of the processor in the foregoing embodiment, which is not described in detail in this embodiment of the present application.

In summary, according to the control method of the camera module provided by the embodiment of the application, the electronic device includes a processor and the camera module. The camera module comprises a lens and a motor connected with the lens. The motor comprises a magnet, a coil, an elastic piece and a stretching piece. Under the condition that the magnet is connected with the coil, one end of the elastic piece is connected with the lens through the magnet, and the other end of the elastic piece is connected with the coil through the stretching piece. Under the condition that the coil is connected with the lens, one end of the elastic piece is connected with the lens through the coil, and the other end of the elastic piece is connected with the magnet through the stretching piece. The stretching piece can stretch to drive the elastic piece to deform along the direction opposite to the direction in which the elastic piece drives the lens to move. Therefore, in the process of starting focusing of the camera module, if the elastic modulus of the spring piece changes due to the temperature rise in the camera module, the stretching piece can be controlled to stretch to provide tensile stress for the elastic piece so as to change the damping of the elastic piece, and the lower elastic modulus of the elastic piece caused by the temperature rise in the camera module along with the increase of the working time is compensated, so that the larger deformation of the elastic piece caused by the lower elastic modulus is reduced. The deflection of the elastic piece driving the lens to move is reduced, the deflection of the position of the lens after moving and the original focusing position is reduced, and the focusing accuracy is improved.

Fig. 6 is a flowchart illustrating a control method of a camera module according to an embodiment of the present application. The control method of the camera module is applied to a processor of electronic equipment, and the electronic equipment can be the electronic equipment shown in fig. 4. The electronic device includes a camera module shown in fig. 2, and is described by taking a tensile member in the camera module as an electro-deformation member as an example. By way of example, the electronic device may be a terminal, a personal computer, or a wearable device, etc. As shown in fig. 6, the control method of the camera module includes:

step 601, a first input is received.

The explanation and implementation of step 601 may refer to the explanation and implementation of step 501, which is not described in detail in the embodiments of the present application.

Step 602, in response to a first input, the camera module is started.

And 603, acquiring the temperature in the camera module detected by the temperature sensor.

Step 604, calculating a voltage corresponding to a temperature variation of the temperature compared with the initial temperature when the temperature is greater than the initial temperature, wherein the initial temperature is the temperature inside the camera module when the camera module is started.

In the embodiment of the application, the temperature change amount may be proportional to the voltage. Alternatively, the process of calculating the voltage corresponding to the temperature variation amount of the temperature from the initial temperature by the electronic device may include: the electronic equipment calculates and obtains the voltage based on the equivalent elastic modulus of the elastic piece, the electrostriction coefficient of the electrostriction piece, the initial elastic modulus of the elastic piece at the initial temperature, the elastic modulus temperature coefficient of the elastic piece and the temperature variation. It should be noted that, the explanation and implementation manner of the electronic device to start the camera module and control the energization of the electro-deformation element may refer to the description of the related functions of the processor in the foregoing embodiment, which is not repeated in this embodiment of the present application.

Step 605, controlling the voltage corresponding to the conduction temperature variation of the stretching piece.

The explanation and implementation of each step in the embodiment of the present application may refer to the related functional description of the processor of the electronic device in the foregoing embodiment, which is not repeated in the embodiment of the present application.

According to the control method of the camera module, the execution main body can be the control device of the camera module. In this embodiment of the present application, a control device of a camera module is described by taking a control method of the camera module performed by a control device of the camera module as an example.

Fig. 7 is a block diagram illustrating a control device of a camera module according to an embodiment of the present application. The control device of the camera module is applied to a processor of an electronic device, and the electronic device can be the electronic device shown in fig. 4. The electronic device comprises the camera module shown in fig. 2. By way of example, the electronic device may be a terminal, a personal computer, or a wearable device, etc. As shown in fig. 7, the control device 700 of the camera module includes: a receiving module 701 and a control module 702.

A receiving module 701 for receiving a first input;

the control module 702 is configured to respond to the first input, start the camera module, and control the stretching member to stretch when the elastic modulus of the elastic member changes, so that the stretching member drives the elastic member to deform in a direction opposite to a target direction, and compensate the elastic modulus of the elastic member, where the target direction is a direction in which the elastic member drives the lens to move.

Optionally, the camera module includes a temperature sensor, and the stretching member is an electro-deformation member. The control module 702 is further configured to:

acquiring the temperature in the camera module detected by the temperature sensor;

under the condition that the temperature is larger than an initial temperature, calculating voltage corresponding to temperature variation of the temperature compared with the initial temperature, wherein the initial temperature is the temperature inside the camera module when the camera module is started;

and controlling the electro-deformation element to conduct the voltage.

In this embodiment of the application, electronic equipment includes treater and camera module. The processor comprises a control device of the camera module. The camera module comprises a lens and a motor connected with the lens. The motor comprises a magnet, a coil, an elastic piece and a stretching piece. Under the condition that the magnet is connected with the coil, one end of the elastic piece is connected with the lens through the magnet, and the other end of the elastic piece is connected with the coil through the stretching piece. Under the condition that the coil is connected with the lens, one end of the elastic piece is connected with the lens through the coil, and the other end of the elastic piece is connected with the magnet through the stretching piece. The stretching piece can stretch to drive the elastic piece to deform along the direction opposite to the direction in which the elastic piece drives the lens to move. Therefore, in the process of starting focusing of the camera module, if the elastic modulus of the spring piece changes due to the temperature rise in the camera module, the control device of the camera module can control the stretching piece to stretch to provide tensile stress for the elastic piece so as to change the damping of the elastic piece and compensate the lower elastic modulus of the elastic piece caused by the temperature rise in the camera module along with the increase of the working time length, so that the larger deformation quantity of the elastic piece caused by the lower elastic modulus is reduced. The deflection of the elastic piece driving the lens to move is reduced, the deflection of the position of the lens after moving and the original focusing position is reduced, and the focusing accuracy is improved.

The control device of the camera module in the embodiment of the application may be a controller of the electronic device, or may be a component in the controller of the electronic device, for example, an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices than a terminal. For example, the electronic device may be a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted electronic device, a mobile internet device (Mobile Internet Device, MID), an augmented reality (augmented reality, AR)/Virtual Reality (VR) device, a robot, a wearable device, an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), a netbook or a personal digital assistant (personal digital assistant, PDA), or the like, and may also be a personal computer (personal computer, PC), a Television (TV), a teller machine, a self-service machine, or the like.

The control device of the camera module in the embodiment of the application may be a device with an operating system. The operating system may be an Android operating system, an ios operating system, or other possible operating systems, which are not specifically limited in the embodiments of the present application.

The control device for the camera module provided in the embodiment of the present application can implement each process implemented in any one of the method embodiments of fig. 5 to 6, and in order to avoid repetition, a detailed description is omitted here.

Optionally, as shown in fig. 8, the embodiment of the present application further provides an electronic device 800, including the camera module, the processor 801 and the memory 802 provided in any embodiment of the present application, where a program or an instruction capable of running on the processor 801 is stored in the memory 802, and the program or the instruction realizes each step of the control method embodiment of the camera module when being executed by the processor 801, and can achieve the same technical effect, so that repetition is avoided and no further description is provided herein.

The electronic device in the embodiment of the application includes the mobile electronic device and the non-mobile electronic device described above.

Fig. 9 is a schematic hardware structure of an electronic device implementing an embodiment of the present application. The electronic device 900 includes, but is not limited to: radio frequency unit 901, network module 902, audio output unit 903, input unit 904, sensor 905, display unit 906, user input unit 907, interface unit 908, memory 909, and processor 990. The electronic device 900 further includes a camera module provided in any of the embodiments of the present application.

Those skilled in the art will appreciate that the electronic device 900 may also include a power source (e.g., a battery) for powering the various components, which may be logically connected to the processor 990 by a power management system to perform functions such as managing charge, discharge, and power consumption by the power management system. The electronic device structure shown in fig. 9 does not constitute a limitation of the electronic device, and the electronic device may include more or less components than shown, or may combine certain components, or may be arranged in different components, which are not described in detail herein.

Wherein the input unit 904 is configured to receive a first input;

the processor 990 is configured to respond to the first input, start the camera module, and control the stretching member to stretch when the elastic modulus of the elastic member changes, so that the stretching member drives the elastic member to deform in a direction opposite to a target direction, and compensate the elastic modulus of the elastic member, where the target direction is a direction in which the elastic member drives the lens to move.

In this application embodiment, electronic equipment includes controller and camera module. The camera module comprises a lens and a motor connected with the lens. The motor comprises a magnet, a coil, an elastic piece and a stretching piece. Under the condition that the magnet is connected with the coil, one end of the elastic piece is connected with the lens through the magnet, and the other end of the elastic piece is connected with the coil through the stretching piece. Under the condition that the coil is connected with the lens, one end of the elastic piece is connected with the lens through the coil, and the other end of the elastic piece is connected with the magnet through the stretching piece. The stretching piece can stretch to drive the elastic piece to deform along the direction opposite to the direction in which the elastic piece drives the lens to move. Therefore, in the process of starting focusing of the camera module, if the elastic modulus of the spring piece changes due to the temperature rise in the camera module, the stretching piece can be controlled to stretch to provide tensile stress for the elastic piece so as to change the damping of the elastic piece, and the lower elastic modulus of the elastic piece caused by the temperature rise in the camera module along with the increase of the working time is compensated, so that the larger deformation of the elastic piece caused by the lower elastic modulus is reduced. The deflection of the elastic piece driving the lens to move is reduced, the deflection of the position of the lens after moving and the original focusing position is reduced, and the focusing accuracy is improved.

Optionally, the camera module includes a temperature sensor, and the stretching member is an electro-deformation member. The processor 990 is further configured to obtain a temperature in the camera module detected by the temperature sensor; under the condition that the temperature is larger than an initial temperature, calculating voltage corresponding to temperature variation of the temperature compared with the initial temperature, wherein the initial temperature is the temperature inside the camera module when the camera module is started; and controlling the electro-deformation element to conduct the voltage.

It should be appreciated that in embodiments of the present application, the input unit 904 may include a graphics processor (Graphics Processing Unit, GPU) 9041 and a microphone 9042, with the graphics processor 9041 processing image data of still pictures or video obtained by an image capture device (e.g., a camera) in a video capture mode or an image capture mode. The display unit 906 may include a display panel 9061, and the display panel 9061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 907 includes at least one of a touch panel 9071 and other input devices 9072. Touch panel 9071, also referred to as a touch screen. The touch panel 9071 may include two parts, a touch detection device and a touch controller. Other input devices 9072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.

The memory 909 may be used to store software programs as well as various data. The memory 909 may mainly include a first storage area storing programs or instructions and a second storage area storing data, wherein the first storage area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the memory 909 may include a volatile memory or a nonvolatile memory, or the memory 909 may include both volatile and nonvolatile memories. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM), static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (ddr SDRAM), enhanced SDRAM (Enhanced SDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). Memory 909 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

Processor 990 may comprise one or more processing units; optionally, the processor 990 integrates an application processor that primarily processes operations involving an operating system, user interface, application programs, etc., and a modem processor that primarily processes wireless communication signals, such as a baseband processor. It is to be appreciated that the modem processor described above may not be integrated into the processor 990.

The embodiment of the application further provides a readable storage medium, on which a program or an instruction is stored, where the program or the instruction realizes each process of the control method embodiment of the camera module when being executed by the processor, and the same technical effect can be achieved, so that repetition is avoided, and no detailed description is given here.

Wherein the processor is a processor in the electronic device described in the above embodiment. The readable storage medium includes computer readable storage medium such as computer readable memory ROM, random access memory RAM, magnetic or optical disk, etc.

The embodiment of the application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled with the processor, the processor is used for running a program or an instruction, implementing each process of the control method embodiment of the camera module, and achieving the same technical effect, so as to avoid repetition, and no further description is provided here.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, chip systems, or system-on-chip chips, etc.

The embodiments of the present application provide a computer program product stored in a storage medium, where the program product is executed by at least one processor to implement each process of the control method embodiment of the camera module, and achieve the same technical effects, and for avoiding repetition, a detailed description is omitted herein.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solutions of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), comprising several instructions for causing a terminal (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the methods described in the embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims

1. The utility model provides a camera module, its characterized in that, the camera module includes:

lens and motor, the lens with the motor is connected, the motor includes: the device comprises a magnet, a coil, an elastic piece and a stretching piece, wherein the magnet is arranged opposite to the coil;

or, in the case that the coil is connected with the lens, one end of the elastic member is connected with the lens through the coil, and the other end of the elastic member is connected with the magnet through the stretching member;

2. The camera module of claim 1, wherein the camera module further comprises: a housing and a temperature sensor;

the motor is located in the shell, at least part of the lens is located in the shell, the temperature sensor is installed inside the shell and used for detecting the temperature in the shell, the temperature change amount of the temperature in the shell compared with the initial temperature is used for determining the stretching amount of the stretching piece, and the initial temperature is the temperature inside the camera module when the camera module is started.

3. The camera module of claim 2, wherein the temperature sensor is disposed adjacent to the resilient member.

4. The camera module of claim 1, wherein the camera module further comprises: an elastic base;

the stretching piece is connected with the magnet through the elastic base, or the stretching piece is connected with the coil through the elastic base;

when the elastic modulus of the elastic piece changes, the stretching piece drives the elastic base to deform, and the elastic base provides deformation allowance for the stretching piece to stretch.

5. The camera module of claim 4, wherein the motor comprises: a first fixing member and a second fixing member;

the elastic piece is fixedly connected with the coil through the first fixing piece, and the elastic base is fixedly connected with the magnet through the second fixing piece;

or, the elastic piece is fixedly connected with the magnet through the first fixing piece, and the elastic base is fixedly connected with the coil through the second fixing piece.

6. The camera module according to claim 1, wherein the elastic member is annular in shape, the stretching member is annular in shape, and the stretching member is sleeved on the elastic member;

Or the elastic piece is annular in shape, the number of the stretching pieces is multiple, and the stretching pieces are distributed at intervals along the circumferential direction of the elastic piece.

7. The camera module of claim 2, wherein the tensile member is an electro-deformable member, and the amount of temperature change is used to determine a voltage at which the electro-deformable member is energized.

8. A control method of a camera module, applied to an electronic device, the electronic device including the camera module according to any one of claims 1 to 7, the method comprising:

receiving a first input;

and responding to the first input, starting the camera module, and controlling the stretching piece to stretch when the elastic modulus of the elastic piece changes, so that the stretching piece drives the elastic piece to deform along the opposite direction of the target direction, and compensating the elastic modulus of the elastic piece, wherein the target direction is the direction in which the elastic piece drives the lens to move.

9. The method of claim 8, wherein the camera module includes a temperature sensor, the tensile member is an electro-deformable member, and the controlling the electro-deformable member to expand and contract when the elastic modulus of the elastic member changes includes:

and controlling the electro-deformation element to conduct the voltage.

10. An electronic device, the electronic device comprising: a processor and a camera module according to any one of claims 1 to 7, the processor being configured to implement the control method of the camera module according to any one of claims 8 to 9.