CN115174815A

CN115174815A - Camera module, control method of camera module and electronic equipment

Info

Publication number: CN115174815A
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: 2022-10-11
Anticipated expiration: 2042-08-01
Also published as: CN115174815B

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 driving device comprises a magnet, a coil, an elastic piece and a stretching piece, wherein under the condition that 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; 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; when the elastic modulus of the elastic piece changes, the stretching piece stretches to drive the elastic piece to deform in the direction opposite to the target direction, so as to compensate the elastic modulus of the elastic piece, wherein 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 shooting function of the mobile terminal has become a core function frequently used in daily life of people. And in the shooting function of the mobile terminal, the focusing capacity 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 the 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 and realize 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, and can realize linear and limited swing angle motions. The structure of the voice coil motor mainly comprises: magnet, coil and spring leaf. Wherein, magnet and coil set up relatively, the spring leaf respectively with magnet, coil and camera lens fixed connection. 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 fixedly connected with coil 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 and focus. When focusing is completed, the relative position between the lens and the image sensor is required to be unchanged in an ideal state so as to ensure the focusing effect in the shooting process.

However, the camera module generates a large amount of heat during operation, and the heat may cause a temperature rise inside the camera module. The spring plate is generally made of metal, so that the temperature of the spring plate generally rises along with the increase of the working time of the camera module. The elastic modulus of the metal is reduced along with the increase of the temperature, so that the deformation amount of the spring piece is increased along with the reduction of the elastic modulus when the spring piece is subjected to the same acting force. The temperature in the camera module rises along with the increase of the working time of the camera module, and the deformation quantity of the spring piece can be increased when the spring piece is under the same acting force of the coil, so that the change quantity of the relative position between the lens and the image sensor is increased, the lens deviates from the original focusing position, the defocusing is caused, and the focusing accuracy is reduced.

Disclosure of Invention

The embodiment of the application aims to provide a camera module, a camera module control method and electronic equipment, and the camera module can solve the problem that the focusing accuracy of a mobile terminal is low due to the fact that the elastic modulus of a spring piece is reduced due to the fact that the temperature of the spring piece in the camera module rises.

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 tension member,

under the condition that 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;

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;

when the elastic modulus of the elastic part changes, the stretching part stretches to drive the elastic part to deform along the direction opposite to the target direction, so as to compensate the elastic modulus of the elastic part, and the target direction is the direction in which the elastic part drives the lens to move.

In a second aspect, an embodiment of the present application provides a method for controlling a camera module, which is applied to a processor of an electronic device, where the electronic device includes the camera module according to any one of the foregoing first aspects, and the method includes:

receiving a first input;

responding to the first input, starting the camera module, and controlling the stretching piece to stretch and retract so that the stretching piece drives the elastic piece to deform along the direction opposite to 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.

In a third aspect, an embodiment of the present application provides an electronic device, where the electronic device includes: the camera module comprises a processor and the camera module according to any one of the first aspect, wherein the processor is used for realizing the control method of the camera module according to any one of the second aspect.

In a fourth aspect, an embodiment of the present application provides an electronic device, which includes the camera module according to any one of the foregoing first aspects, a processor, and a memory, where the memory stores a program or instructions that can be executed on the processor, and the program or instructions, when executed by the processor, implement the steps of the method according to the second aspect.

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

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

In a seventh aspect, the present application provides a computer program product, which is stored in a storage medium and executed by at least one processor to implement the method according to the second aspect.

In an embodiment of the present application, the camera module includes a lens and a motor connected to the lens. Wherein, the motor includes magnet, coil, elastic component and tensile piece. When the magnet is connected with the coil, 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. When 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. The stretching piece can stretch out and draw back 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 focusing when the camera module is started, if the elastic modulus of the spring piece changes due to the temperature rise in the camera module, the stretching of the stretching piece can be controlled to provide tensile stress for the elastic piece, so that the damping of the elastic piece is changed, the lower elastic modulus of the elastic piece caused by the rise of the internal temperature along with the increase of the working time of the camera module is compensated, and the larger deformation amount of the elastic piece caused by the lower elastic modulus is further reduced. The deviation amount of the elastic piece driving the lens to move is reduced, the offset 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 structural 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 disclosure;

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

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 for a camera module according to an embodiment of the present disclosure;

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

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

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 diagram of an electronic device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below clearly with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present disclosure.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

The following describes in detail the camera module and the control method of the camera module provided in the embodiments of the present application through specific embodiments and application scenarios thereof with reference to the accompanying drawings.

Please refer to fig. 1, which shows a schematic structural diagram of a camera module in the related art. As shown in fig. 1, the current camera module 100 generally includes: a lens 101, a motor 102, and an image sensor (sensor) 105. The motor 102 and the image sensor 105 are located inside the camera module 100, and at least a 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. Magnet 1021 and 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 elastic member 1023 may be a spring plate.

When the camera module 100 starts focusing, the coil 1022 of the motor 102 receives an external current, and the current flows through the coil 1022 to generate a magnetic field, which 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, 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 rises, and the deformation of the elastic element increases when the elastic element is subjected to the same acting force of the coil, so that the variation of the relative position between the lens and the image sensor increases, the lens deviates from the original focusing position, the defocusing is caused, and the focusing accuracy is reduced.

The embodiment of the application provides a camera module, can solve among the aforementioned correlation technique because of the temperature rising of the interior elastic component of camera module, lead to the elastic modulus of elastic component to reduce the camera module that causes the lower problem of the accuracy of focusing of camera module. Please refer to fig. 2, which illustrates a schematic structural diagram of a camera module according to an embodiment of the present disclosure. As shown in fig. 2, the camera module 100 includes:

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

Magnet 1021 is disposed opposite to coil 1022. When the coil 1022 is coupled to the lens 101, one end of the elastic member 1023 is coupled to the lens 101 through the coil 1022, and the other end of the elastic member 1023 is coupled to the magnet 1021 through the tension member 1024. Alternatively, in the case where the magnet is connected to the lens, one end of the elastic member is connected to the lens through the magnet, and the other end of the elastic member is connected to the coil through the tension 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 component 1023 changes, the stretching component 1024 stretches to drive the elastic component 1023 to deform in the opposite direction of the target direction, so as to compensate the elastic modulus of the elastic component 1023. The target direction is the direction in which the elastic element 1023 drives the lens 101 to move.

In the embodiment of the present application, the magnet 1021 in the camera module 100 can be fixedly connected to the lens 101. Alternatively, the coil 1022 may be fixedly connected to the lens 101.

Optionally, when the magnet 1021 is fixedly connected to the lens 102, in a process of starting focusing of the camera module 100, a current flows through a magnetic field generated by the coil 1022, and the interaction with the magnetic field of the magnet 1021 drives the magnet 1021 to move, and further drives the lens 101 fixedly connected to the magnet 1021 to move, so as to change a position of the lens 101, thereby realizing shooting focusing. Under the condition that the coil 1022 is fixedly connected with the lens 101, in the process of starting focusing of the camera module 100, the current flows through the magnetic field generated by the coil 1022, and the interaction with the magnetic field of the magnet 1021 can drive the coil 1022 to move, so as to drive the lens 101 fixedly connected with the coil 1022 to move, change the position of the lens 101, and realize shooting focusing.

In the camera module shown in fig. 2, when the camera module 100 starts focusing, the elastic member 1023 is deformed by the acting force between the magnet 1021 and the coil 1022 of the motor 102. By controlling the stretching member 1023 to stretch out and draw back, the elastic member 1023 is driven to deform along the direction opposite to the target direction. The tension member 1024 provides a tensile stress for the elastic member 1023 to change the damping of the elastic member, compensate the elastic modulus that the elastic member 1023 is lower because of the inside temperature rise of the camera module, and then reduce the deformation amount that the spring leaf is bigger because of the elastic modulus is lower. In the case that the stretching member 1024 is an electro-deformable member, by applying a voltage to the stretching member 1024, the stretching member 1024 is energized and deforms, and the elastic member 1023 is deformed in the direction opposite to the target direction. For example, during the focusing process of the camera module, the elastic member 1023 is deformed in the target direction by the force between the magnet 1021 and the coil 1022 of the motor 102. As the operating time of the camera module 100 increases, the temperature inside the camera module 100 rises, and thus the temperature of the elastic member 1023 rises. 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 voltage to the stretching member 1024, the stretching member 1024 deforms, which drives the elastic member 1023 to deform in the opposite direction of the target direction, thereby reducing the amount of deformation of the elastic member in the target direction.

Alternatively, where the tension member 1024 is an electro-deformable member, the direction of the component of the deforming force of the tension member 1024 may be opposite to the target direction with the tension member 1024 energized. Alternatively, the direction of deformation of the tension members 1024 may be opposite to the target direction with the tension members 1024 energized. That is, the direction of the deformation force of the tension member 1024 is opposite to the target direction.

To sum up, the camera module that this application embodiment provided, this camera module include the camera lens and with the motor of camera lens connection. Wherein, the motor includes magnet, coil, elastic component and tensile piece. When the magnet is connected with the coil, 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. 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. The stretching piece can stretch out and draw back 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 focusing when the camera module is started, 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 and retract to provide tensile stress for the elastic piece, so that the damping of the elastic piece is changed, the lower elastic modulus of the elastic piece caused by the rise of the internal temperature along with the increase of the working time of the camera module is compensated, and the larger deformation quantity of the elastic piece caused by the lower elastic modulus is further reduced. The deviation amount of the elastic piece driving the lens to move is reduced, the offset between 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 temperature compared to the initial temperature is used to determine the amount of stretching of the stretching member 1024. The initial temperature is the temperature inside the camera module 100 when it is started. Because the temperature variation inside the camera module is related to the variation of the elastic modulus of the elastic member, the temperature variation inside the camera module affects the temperature of the elastic member. Therefore, according to the stretching amount of the stretching piece determined by the temperature variation in the camera module, the compensation precision of the elastic modulus of the elastic piece can be improved, the adjustment precision of the large deformation amount of the elastic piece caused by the low elastic modulus is improved, the adjustment precision of the deviation amount of the elastic piece driving the lens to move is further improved, and the focusing accuracy is improved.

In the case where the tension member is an electro-deformable member, the amount of deformation of the electro-deformable member is related to the magnitude of the voltage applied to the electro-deformable member, and the amount of temperature change inside the camera module affects the temperature of the elastic member. Consequently, according to the electrified voltage of the tensile piece that the inside temperature variation of camera module was confirmed, can promote the compensation precision to the elastic modulus of elastic component, further promote the adjustment accuracy to the deviation that the elastic component drove the camera lens and remove, promote the accuracy of focusing.

In the embodiment of the application, the temperature variation inside the camera module is in direct proportion to the voltage applied to the electro-deformable element. That is, the larger the amount of change in the current temperature of the elastic member from the initial temperature, the larger the voltage applied to the electro-deformable member.

Optionally, the elastic modulus K and the temperature change Tx of the elastic member satisfy a first formula. The first formula is: k = K0-a × Tx. Where K is an elastic modulus of the elastic member, K0 is an initial elastic modulus of the elastic member at an initial temperature, a is an elastic modulus temperature coefficient of the elastic member, and Tx is a temperature change amount of the current temperature of the elastic member from the initial temperature.

The elastic modulus K of the elastic part and the damping F borne by the elastic part meet a second formula. The second formula is K × F = M. Wherein, F is the damping that the elastic member receives, that is, the tensile stress that the electrostrictive member applies to the elastic member, that is, the deforming force of the electrostrictive 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-deformable member and the deformation force F of the electro-deformable member satisfy a third formula. The third formula is V = h × F. Where V is the voltage applied to the electro-deformable member, h is the electrostrictive coefficient of the electro-deformable member, and F is the deformation force of the electro-deformable member.

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

In the embodiment of the present application, the temperature sensor may include a temperature-variable resistor. The resistance value of the temperature-variable resistor changes with the change of the detected temperature. In the case that the temperature sensor is a temperature variable resistor, the temperature sensor may convert a voltage of the temperature variable resistor into a temperature value to detect a temperature inside the camera module.

The resistance Rx of the temperature varying resistor and the corresponding temperature value T satisfy a fifth formula. The fifth formula is Rx = R0 × exp [ Bn (1/T-1/T0) ]. Wherein Rx is the resistance of the temperature-variable resistor. R0 is the standard resistance value of the temperature-variable resistor, namely the resistance value of the temperature-variable resistor at normal temperature (25 ℃). exp denotes a logarithmic function with base e. Bn is a standard parameter of the temperature-sensitive resistor. T0 is normal temperature.

In embodiments of the present application, the tensile member may also be a magnetostrictive member. In the case where the elongated member is a magnetostrictive member, an excitation coil is disposed around the magnetostrictive member. The magnetic deformation piece is driven to stretch and contract by electrifying the exciting coil to enable the exciting coil to provide a magnetic field with variable amplitude. Wherein the deformation amount of the magnetic deformation element is related to the current applied to the exciting coil, and the temperature change amount in the camera module can influence the temperature of the elastic element. Consequently, can confirm excitation coil's circular telegram electric current according to the inside temperature variation of camera module, realize the accurate control to the magnetic deformation piece flexible volume, promote the compensation precision to the elastic modulus of elastic component, further promote the adjustment accuracy to the deviation of elastic component drive camera lens removal, promote the accuracy of focusing.

Optionally, with continued reference to fig. 2, the motor includes a frame structure 1025. Frame structure 1025 and magnet 1021 may be joined to form a cavity. The temperature sensor 103 may be installed in the cavity so as 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 disposed adjacent to the elastic member 1023. The temperature sensor is arranged close to the elastic member to ensure accuracy of detecting the temperature of the elastic member. Illustratively, the motor 102 may include two elastic members 1023 attached to both sides of the magnet 2021 and the coil 2022. The resilient member 1023 on one side of magnet 1021 and coil 1022 is closer to frame structure 1025. Temperature sensor 103 may be mounted on frame structure 1025 adjacent to the elastic member 1023.

In the embodiment of the present application, please refer 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 coupled to the coils 1022 through the tension member 1024, the tension member 1024 is coupled to the coils 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 tension member 1024 to expand and contract, i.e., to provide a space for the tension member 1024 to expand and contract. 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 member and a second fixing member. Referring to fig. 2 and 3, when the coil 1022 is connected to the lens 101, one end of the elastic element 1023 is connected to the coil 1022 through the first fixing element 1026. The other end of the elastic member 1023 is connected to the elastic base 104 by a tension member 1024. The flexible base 104 is connected to the magnet 1021 via a second fixing unit 1027. Thus, the first fixing member is used to fix the side of the elastic member connected to the coil. The second fixing piece is used for fixing one side of the stretching piece 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 member is used for fixing the side of the elastic member connected with the magnet, and the second fixing member is used for fixing the side of the elastic base connected with the coil.

In the illustrated embodiment, first and

second anchors

1026, 1027 may also be coupled to a frame structure 1025, as shown in FIG. 2. First mount 1026, second mount 1027, magnet 1024 and frame structure 1025 are coupled 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 magnet 1021, the coil 1022 and the elastic member 1023 in the motor 102 may be all ring-shaped. The magnet 1021, the coil 1022 and the inner ring of the elastic member 1023 communicate. In an alternative implementation, the stretching member 1024 is annular, and the stretching member 1024 is sleeved on the elastic member 1023. Or, in another alternative implementation, the elastic member 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 in the circumferential direction of the elastic member 1023.

In the embodiment of the present application, an optional structural condition of the camera module 100 shown in fig. 2 is taken as an example to further describe the camera module 100 provided in the embodiment of the present application. By way of example, it is assumed that the tensile member is 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 fixing member 106. The lens 101 is connected to a motor 102, and a temperature sensor 103 is installed 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 fasteners 1026, two second fasteners 1027, a lens holder 1028, and the 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 elements 1026, the two second fixing elements 1027, the lens holder 1028 and the elastic base 104 may be ring-shaped. And the magnet 1021, the coil 1022, the two elastic members 1023, the two electro-deformable members 1024, the two first fixing elements 1026, the two second fixing elements 1027, and the inner ring of the lens holder 1028 communicate with the opening of the frame structure 1025. A second fixing element 1027, a flexible base 104, an electro-deformable element 1024, a flexible element 1023, and a first fixing element 1026 are sequentially connected to form a set of electro-active components. Two sets of electrical components are connected across electromagnet 1021 and coil 1022.

Under the condition of electrifying the electro-deformation piece according to the temperature variation inside the camera module, the electro-deformation piece 1024 deforms to drive the elastic piece 1023 connected with the electro-deformation piece 1024 to deform along the opposite direction of the target direction, and the elastic modulus of the elastic piece 1023 is compensated.

To sum up, the camera module that this application embodiment provided, this camera module include the camera lens and with the motor of camera lens connection. Wherein, the motor includes magnet, coil, elastic component and tensile piece. When the magnet is connected with the coil, 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. 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. The stretching piece can stretch out and draw back 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 focusing when the camera module is started, 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 and retract to provide tensile stress for the elastic piece, so that the damping of the elastic piece is changed, the lower elastic modulus of the elastic piece caused by the rise of the internal temperature along with the increase of the working time of the camera module is compensated, and the larger deformation quantity of the elastic piece caused by the lower elastic modulus is further reduced. The deviation amount of the elastic piece driving the lens to move is reduced, the offset of the position of the lens after moving and the original focusing position is reduced, and the focusing accuracy is improved.

Referring to fig. 4, a block diagram of an electronic device provided in an embodiment of the present application is shown. As shown in fig. 4, the electronic apparatus 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 embodiment of the present application.

The processor 200 is configured to start the camera module, and control the stretching member to stretch when the elastic modulus of the elastic member of the camera module changes, so that the stretching member drives the elastic member to deform in the opposite direction of the target direction, thereby compensating 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 where the tension 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 electrostrictive 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, the power module 300 is controlled to energize the electrostrictive member, so as to control the stretching member to stretch.

Further optionally, the camera module 100 comprises 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 relative to the initial temperature when the temperature is greater than the initial temperature, and control the power module to apply the voltage to the tension member. The initial temperature is the inside temperature when the camera module starts.

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. Wherein, the temperature in the camera module 100 that the processor obtained when detecting that the camera module 100 starts is the initial temperature. The processor 200 may compare the magnitude of the acquired temperature with 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 higher 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 change amount of the temperature from the initial temperature, and controls the power module to apply the voltage to the stretching member. Wherein, the temperature variation is in direct proportion to the voltage.

Optionally, the processor 200 is further configured to calculate a temperature change amount of the temperature from the initial temperature in a case where the temperature is greater than the initial temperature after acquiring the temperature in the camera module 100 detected by the temperature sensor. And calculating to obtain 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 implementation manner of calculating the obtained voltage by the processor 200 based on the equivalent elastic modulus of the elastic element, the electrostrictive coefficient of the electrostrictive element, the initial elastic modulus of the elastic element at the initial temperature, the elastic modulus temperature coefficient of the elastic element, and the temperature variation may refer to the calculation manner of the fourth formula, which is not described in detail in this embodiment of the application.

In the embodiment of the present application, in the case that the stretching member is a magnetic deformation 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 around the magnetostrictive member in the camera module 100, respectively. The processor 200 is further configured to start the camera module, and control the power module 300 to energize the excitation coil to control the stretching member to stretch when the elastic modulus of the elastic member of the camera module changes. Optionally, in a case that the camera module 100 includes a temperature sensor, the processor 200 may be further configured to start the camera module, obtain a temperature in the camera module detected by the temperature sensor, determine, according to a temperature change amount of the temperature compared with an initial temperature, a current to be applied to the magnetostrictive member when the temperature is greater than the initial temperature, and control the power module to apply the current to the magnetostrictive member. The initial temperature is the inside temperature when the camera module starts.

To sum up, the electronic device provided by the embodiment of the application comprises a processor and a camera module. The camera module comprises a lens and a motor connected with the lens. Wherein, the motor includes magnet, coil, elastic component and tensile piece. In the case where the magnet and the coil are connected, one end of the elastic member is connected to the lens through the magnet, and the other end of the elastic member is connected to the coil through the tension member. 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. The stretching piece can stretch out and draw back 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 focusing when the camera module is started, if the elastic modulus of the spring piece changes due to the temperature rise in the camera module, the stretching of the stretching piece can be controlled to provide tensile stress for the elastic piece, so that the damping of the elastic piece is changed, the lower elastic modulus of the elastic piece caused by the rise of the internal temperature along with the increase of the working time of the camera module is compensated, and the larger deformation amount of the elastic piece caused by the lower elastic modulus is further reduced. The deviation amount of the elastic piece driving the lens to move is reduced, the offset of the position of the lens after moving and the original focusing position is reduced, and the focusing accuracy is improved.

Please refer to fig. 5, which shows a flowchart of 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 the camera module shown in fig. 2. The electronic device may be, for example, a terminal, a personal computer, a wearable device, or the like. As shown in fig. 5, the control method of the camera module includes:

step 501, receiving a first input.

In the embodiment of the application, the first input is used for starting a camera module of the electronic device. The user may execute the first input if the user wants to start the operation of the camera module of the electronic device. Alternatively, the electronic device may display a camera function identifier. The first input may be a first input for a camera function identification. By way of example, the first input may be in the form of a click, long press, swipe, or voice. Taking the first input as a click input as an example, the user may click the image capturing function identifier, so that the electronic device receives a click input for the image capturing function identifier, and then the subsequent steps are executed.

And 502, 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 the elastic modulus of the elastic piece is compensated. The target direction is the direction in which the elastic piece drives the lens to move.

In this application embodiment, electronic equipment can be after starting the camera module, whether the elastic modulus of periodic or real-time detection elastic component changes. So as to control the stretching piece to stretch when the elastic modulus of the elastic piece changes.

Optionally, in a case that the stretching member in the camera module is an electro-deformable member, when the elastic modulus of the elastic member of the electronic device changes, the implementation process of controlling the stretching member to stretch may include: the electronic equipment acquires the temperature in the camera module detected by the temperature sensor. And under the condition that the temperature is higher than the initial temperature, calculating the voltage corresponding to the temperature variation of the temperature relative to the initial temperature, and controlling the breakover voltage of the electro-deformation piece.

Or, in the case that the stretching member in the camera module is a magnetostrictive member, when the elastic modulus of the elastic member changes, the implementation process of controlling the stretching member to stretch may include: the electronic equipment acquires the temperature in the camera module detected by the temperature sensor. And under the condition that the temperature is higher than the initial temperature, determining the current to be applied to an excitation coil surrounding the magneto-deformation piece according to the temperature variation of the temperature, which is higher than the initial temperature, and controlling the conduction current of the magneto-deformation piece. Wherein, initial temperature is the inside temperature when the camera module starts.

It should be noted that, when the elastic modulus of the elastic element changes, the implementation manner of controlling the stretching element to stretch may refer to the description of the relevant functions of the processor in the foregoing embodiments, which is not described in detail in this embodiment of the application.

To sum up, in 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. Wherein, the motor includes magnet, coil, elastic component and tensile piece. When the magnet is connected with the coil, 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. 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. The stretching piece can stretch out and draw back 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 focusing when the camera module is started, 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 and retract to provide tensile stress for the elastic piece, so that the damping of the elastic piece is changed, the lower elastic modulus of the elastic piece caused by the rise of the internal temperature along with the increase of the working time of the camera module is compensated, and the larger deformation quantity of the elastic piece caused by the lower elastic modulus is further reduced. The deviation amount of the elastic piece driving the lens to move is reduced, the offset of the position of the lens after moving and the original focusing position is reduced, and the focusing accuracy is improved.

Please refer to fig. 6, which shows a flowchart of 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 the camera module shown in fig. 2, and the stretching member in the camera module is taken as an example of an electro-deformable member for explanation. By way of example, the electronic device may be a terminal, a personal computer, a wearable device, or the like. As shown in fig. 6, the control method of the camera module includes:

step 601, receiving a first input.

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

Step 602, responding to the first input, starting the camera module.

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

Step 604, when the temperature is higher than the initial temperature, calculating a voltage corresponding to a temperature change of the temperature from the initial temperature, wherein the initial temperature is an internal temperature of the camera module when the camera module is started.

In the embodiment of the present application, the temperature variation may be proportional to the voltage. Alternatively, the process of the electronic device calculating the voltage corresponding to the temperature change amount of the temperature compared to the initial temperature 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, for the explanation and implementation of the electronic device executing the camera module to start and control the energization of the electrostrictive element, reference may be made to the description of the related functions of the processor in the foregoing embodiment, which is not described in detail in this embodiment of the present application.

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

Explanation and implementation of each step in this embodiment of the present application may refer to description of related functions of a processor of the electronic device in the foregoing embodiment, which is not described in detail in this embodiment of the present application.

According to the control method of the camera module, the execution main body can be a control device of the camera module. In the embodiment of the present application, a control method for a control device of a camera module to execute the camera module is taken as an example, and the control device of the camera module provided in the embodiment of the present application is described.

Please refer to fig. 7, which shows a block diagram of 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 includes the camera module shown in fig. 2. By way of example, the electronic device may be a terminal, a personal computer, a wearable device, or the like. 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, configured to receive a first input;

a control module 702, configured to start the camera module in response to the first input, 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 comprises a temperature sensor, and the stretching member is an electro-deformable 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 higher than an initial temperature, calculating a voltage corresponding to a temperature variation of the temperature which is higher than the initial temperature, wherein the initial temperature is the internal temperature of the camera module when the camera module is started;

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

In the embodiment of the application, the electronic equipment comprises a processor and a 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. Wherein, the motor includes magnet, coil, elastic component and tensile piece. When the magnet is connected with the coil, 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. 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. The stretching piece can stretch out and draw back 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 focusing when the camera module is started, 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 and retract so as to provide tensile stress for the elastic piece, so that the damping of the elastic piece is changed, the lower elastic modulus of the elastic piece caused by the rise of the internal temperature along with the increase of the working time of the camera module is compensated, and the larger deformation amount of the elastic piece caused by the lower elastic modulus is further reduced. The deviation amount of the elastic piece driving the lens to move is reduced, the offset between 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 present application may be a controller of an electronic device, and may also be a component in the controller of the electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal, or may be a device other 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 (MID), an Augmented Reality (AR)/Virtual Reality (VR) Device, a robot, a wearable Device, an ultra-Mobile personal computer (UMPC), a netbook or a Personal Digital Assistant (PDA), and the like, and may also be a Personal Computer (PC), a Television (TV), a teller machine (teller machine), a self-service machine, and the like, which are not limited in this embodiment.

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

The control device of the camera module provided in the embodiment of the present application can implement each process implemented by any one of the method embodiments in fig. 5 to 6, and is not described here again to avoid repetition.

Optionally, as shown in fig. 8, an electronic device 800 is further provided in an embodiment of the present application, and includes the camera module, the processor 801, and the memory 802, where a program or an instruction that can be executed on the processor 801 is stored on the memory 802, and when the program or the instruction is executed by the processor 801, the steps of the embodiment of the control method for the camera module are implemented, and the same technical effects can be achieved, and are not described herein again to avoid repetition.

It should be noted that the electronic device in the embodiment of the present application includes the mobile electronic device and the non-mobile electronic device described above.

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

Those skilled in the art will appreciate that the electronic device 900 may also include a power supply (e.g., a battery) for powering the various components, and that the power supply may be logically coupled to the processor 990 via a power management system, such that the functions of managing charging, discharging, and power consumption are performed via 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 those shown, or combine some components, or arrange different components, and thus, the description is not repeated here.

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

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

In the embodiment of the application, the electronic equipment comprises a controller and a camera module. The camera module comprises a lens and a motor connected with the lens. Wherein, the motor includes magnet, coil, elastic component and tensile piece. When the magnet is connected with the coil, 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. When 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. The stretching piece can stretch out and draw back 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 focusing when the camera module is started, 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 and retract to provide tensile stress for the elastic piece, so that the damping of the elastic piece is changed, the lower elastic modulus of the elastic piece caused by the rise of the internal temperature along with the increase of the working time of the camera module is compensated, and the larger deformation quantity of the elastic piece caused by the lower elastic modulus is further reduced. The deviation amount of the elastic piece driving the lens to move is reduced, the offset 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 comprises a temperature sensor, and the stretching member is an electro-deformable member. The processor 990 is further configured to acquire the temperature in the camera module detected by the temperature sensor; under the condition that the temperature is higher than an initial temperature, calculating a voltage corresponding to a temperature variation of the temperature which is higher than the initial temperature, wherein the initial temperature is the internal temperature of the camera module when the camera module is started; and controlling the electro-deformation piece to conduct the voltage.

In the embodiment of the application, the electronic equipment comprises a controller and a camera module. The camera module comprises a lens and a motor connected with the lens. Wherein, the motor includes magnet, coil, elastic component and tensile piece. When the magnet is connected with the coil, 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. 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. The stretching piece can stretch out and draw back 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 focusing when the camera module is started, if the elastic modulus of the spring piece changes due to the temperature rise in the camera module, the stretching of the stretching piece can be controlled to provide tensile stress for the elastic piece, so that the damping of the elastic piece is changed, the lower elastic modulus of the elastic piece caused by the rise of the internal temperature along with the increase of the working time of the camera module is compensated, and the larger deformation amount of the elastic piece caused by the lower elastic modulus is further reduced. The deviation amount of the elastic piece driving the lens to move is reduced, the offset of the position of the lens after moving and the original focusing position is reduced, and the focusing accuracy is improved.

It should be understood that, in the embodiment of the present application, the input Unit 904 may include a Graphics Processing Unit (GPU) 9041 and a microphone 9042, and the Graphics processor 9041 processes image data of a still picture or a video obtained by an image capturing device (such as 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. A touch panel 9071, also called 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, and a joystick, 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 a program or an instruction and a second storage area storing data, wherein the first storage area may store an operating system, an application program or an instruction (such as a sound playing function, an image playing function, and the like) required for at least one function, and the like. Further, the memory 909 may include volatile memory or nonvolatile memory, or the memory 909 may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. The volatile Memory may be a Random Access Memory (RAM), a Static Random Access Memory (Static RAM, SRAM), a Dynamic Random Access Memory (Dynamic RAM, DRAM), a Synchronous Dynamic Random Access Memory (Synchronous DRAM, SDRAM), a Double Data Rate Synchronous Dynamic Random Access Memory (Double Data Rate SDRAM, ddr SDRAM), an Enhanced Synchronous SDRAM (ESDRAM), a Synchronous Link DRAM (SLDRAM), and a Direct bus RAM (DRRAM). The memory 909 in the embodiments of the subject application includes, but is not limited to, these and any other suitable types of memory.

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

The embodiments of the present application further provide a readable storage medium, where a program or an instruction is stored, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the embodiment of the control method for a camera module, and can achieve the same technical effect, and in order to avoid repetition, the detailed description is omitted here.

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

The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a program or an instruction to implement each process of the control method embodiment of the camera module, and can achieve the same technical effect, and in order to avoid repetition, the description is omitted here.

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

Embodiments of the present application provide a computer program product, where the program product is stored in a storage medium, and the program product is executed by at least one processor to implement the processes of the foregoing embodiment of the control method for a camera module, and can achieve the same technical effects, and in order to avoid repetition, details are not repeated here.

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 phrases "comprising a component of' 8230; \8230;" does not exclude the presence of another like element in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatuses in the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions recited, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

Through the description of the foregoing embodiments, it is clear to those skilled in the art that the method of the foregoing embodiments may be implemented by software plus a necessary general hardware platform, and certainly may also be implemented by hardware, but in many cases, the former is a better implementation. Based on such understanding, the technical solutions of the present application may be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

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

2. The camera module of claim 1, further comprising: 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 variation 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 elastic member.

4. The camera module of claim 1, further comprising: 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 stretching of the stretching piece.

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

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

or the elastic part is annular, the number of the stretching parts is multiple, and the stretching parts are arranged at intervals along the circumferential direction of the elastic part.

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

8. A method for controlling a camera module, which is applied to an electronic device, wherein the electronic device comprises the camera module according to any one of claims 1 to 7, and the method comprises:

receiving a first input;

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 direction opposite to a target direction, and the elastic modulus of the elastic piece is compensated, 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 tension 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 comprises:

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

10. An electronic device, characterized in that the electronic device comprises: the camera module according to any one of claims 1 to 7 and a processor for implementing the control method of the camera module according to any one of claims 8 to 9.