Camera module, control method, control device and electronic equipment

Abstract

The present application discloses a camera module, a control method, a control device and an electronic device, which belong to the technical field of communication equipment. The camera module includes a module shell, a lens body and a limiter; the lens body is movably arranged in the module shell; the limiter includes a magnetostrictive element and a second coil, and the magnetostrictive element and the second coil are both arranged in the module shell; when the second coil is in an unpowered state, the height of the magnetostrictive element is a first height; when the second coil is in an energized state, the height of the magnetostrictive element is a second height; wherein the first height is greater than the second height; when the height of the magnetostrictive element is at the first height, the magnetostrictive element abuts the lens body against the module shell; when the height of the magnetostrictive element is at the second height, there is a gap between at least one of the magnetostrictive element and the module shell and the lens body.

Description

Technical Field

[0001] The present application belongs to the technical field of communication equipment, and specifically relates to a camera module, a control method, a control device and an electronic device. Background Art

[0002] With technological advancements, electronic devices (such as mobile phones and tablets) have made significant progress. As powerful tools, electronic devices have greatly facilitated users' lives and work. Cameras are a fundamental function of electronic devices, satisfying users' photography needs. This function is typically implemented by the camera module of these electronic devices.

[0003] In related technologies, a camera module includes a module housing, a lens, and a drive mechanism comprising a coil and a magnet. The lens is movably mounted within the module housing, with the coil mounted on one side and the magnet mounted on the other. When the coil is energized, the force between the magnet and the coil drives the lens to move, thereby achieving the camera module's anti-shake and focus functions.

[0004] However, since the lens can move freely in the module housing, when the electronic device shakes, the lens of the camera module in the closed state will also move under the action of the inertia force of the electronic device, which can easily cause the lens to collide with the module housing, thereby generating a loud abnormal noise. Summary of the Invention

[0005] The purpose of the embodiments of the present application is to provide a camera module, a control method, a control device and an electronic device, which can solve the problem of loud abnormal noise in electronic devices.

[0006] In a first aspect, an embodiment of the present application provides a camera module, comprising:

[0007] A module housing, a lens body, a first coil, and a magnetic portion, wherein the lens body is movably disposed within the module housing, one of the module housing and the lens body being provided with the first coil, and the other being provided with the magnetic portion, wherein the first coil can drive the lens body to move within the module housing when energized;

[0008] a limiter, the limiter comprising a magnetostrictive member and a second coil, both of which are disposed within the module housing; when the second coil is not energized, the magnetostrictive member has a first height; when the second coil is energized, the magnetostrictive member has a second height; wherein the first height is greater than the second height;

[0009] When the height of the magnetostrictive deformable member is at the first height, the magnetostrictive deformable member abuts the lens body against the module housing to limit the movement of the lens body relative to the module housing; when the height of the magnetostrictive deformable member is at the second height, there is a gap between the lens body and at least one of the magnetostrictive deformable member and the module housing, and the gap is used for the movement of the lens body relative to the module housing.

[0010] In a second aspect, an embodiment of the present application provides an electronic device, comprising a device body and the above-mentioned camera module, wherein the camera module is arranged on the device body.

[0011] In a third aspect, an embodiment of the present application provides a method for controlling a camera module, which is applied to the above-mentioned camera module and includes:

[0012] Obtain the current state and next state of the camera module;

[0013] Control the camera module to switch from the current state to the next state. When the current state is the off state and the next state is the on state, switch the second coil from the off state to the powered state; when the current state is the on state and the next state is the off state, switch the second coil from the powered state to the off state.

[0014] In a fourth aspect, an embodiment of the present application provides a control device for a camera module, which is applied to the above-mentioned camera module, and the control device includes:

[0015] The acquisition module is used to obtain the current state and next state of the camera module;

[0016] A control module is used to control the camera module to switch from the current state to the next state, wherein: when the current state is the off state and the next state is the on state, the control module is used to control the second coil to switch from the off state to the powered state; when the current state is the on state and the next state is the off state, the control module is used to control the second coil to switch from the powered state to the off state.

[0017] In a fifth aspect, an embodiment of the present application provides an electronic device, comprising a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the programs or instructions are executed by the processor, the steps of the control method described above are implemented.

[0018] In a sixth aspect, an embodiment of the present application provides a readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of the control method described above are implemented.

[0019] In the seventh aspect, an embodiment of the present application provides a chip, which includes a processor and a communication interface, the communication interface and the processor are coupled, and the processor is used to run programs or instructions to implement the method described in the third aspect.

[0020] In an embodiment of the present application, a stopper is disposed within the module housing and includes a magnetostrictive element and a second coil. When the second coil is de-energized, the magnetostrictive element has a first height; when the second coil is energized, the magnetostrictive element has a second height. The first height is greater than the second height. Specifically, when the magnetostrictive element is at the first height, it abuts the lens body against the module housing, restricting movement of the lens body relative to the module housing. In this case, the lens body cannot move freely. When the magnetostrictive element is at the second height, a gap exists between at least one of the magnetostrictive element and the module housing and the lens body. This gap allows for movement of the lens body relative to the module housing. In this case, the lens body can move freely. In this solution, when the camera module is closed, the stopper restricts movement of the lens body relative to the module housing, thereby preventing collision between the lens body and the module housing when the electronic device is shaken, thereby effectively reducing abnormal noise from the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 1 is a schematic structural diagram of a camera module in a first state according to an embodiment of the present application;

[0022] Figures 2 to 4 2 is a schematic structural diagram of a camera module in a second state according to an embodiment of the present application;

[0023] Figure 5 It is a structural diagram of some components of the camera module disclosed in the embodiment of the present application;

[0024] Figure 6 and Figure 7 Schematic diagram of the structure of the limiting member of the camera module disclosed in the embodiment of the present application;

[0025] Figure 8 and Figure 9 This is a force analysis diagram of the limiting component of the camera module disclosed in the embodiment of the present application;

[0026] Figure 10 This is a flow chart of the control method of the camera module disclosed in the embodiment of the present application;

[0027] Figure 11 A structural block diagram of an electronic device for implementing an embodiment of the present application;

[0028] Figure 12 A schematic diagram of the hardware structure of an electronic device implementing an embodiment of the present application.

[0029] Description of reference numerals:

[0030] 100-camera module, 110-module housing, 120-lens body, 1201-first end face, 1202-second end face, 121-lens, 122-carrier part, 130-first coil, 140-magnetic part, 150-limiting part, 151-magnetostrictive part, 1511-magnetic fluid film, 1512-rigid bearing part, 152-second coil, 160-filter, 170-photosensitive chip, 180-circuit board. DETAILED DESCRIPTION

[0031] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0032] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects and are not used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate so that the embodiments of this application can be implemented in an order other than those illustrated or described herein. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0033] The camera module, control method, control device and electronic device provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings through specific embodiments and their application scenarios.

[0034] Please refer to Figures 1 to 9 The embodiment of the present application discloses a camera module 100 , which includes a module housing 110 , a lens body 120 , a first coil 130 , a magnetic portion 140 and a limiter 150 .

[0035] The module housing 110 provides a mounting base for the lens body 120 and other components of the camera module 100. The module housing 110 defines a housing space and an opening communicating with the housing space. The lens body 120 is movably disposed within the housing space, meaning that the lens body 120 can move within the housing space. The lens body 120 is positioned opposite the opening, allowing ambient light to enter the lens body 120 through the opening. Therefore, the lens body 120 receives ambient light through the opening.

[0036] The first coil 130 and the magnetic portion 140 can form a power structure. When the first coil 130 is energized, it can generate an Ampere force in the magnetic field generated by the magnetic portion 140, thereby causing relative motion between the first coil 130 and the magnetic portion 140. Therefore, the first coil 130 and the magnetic portion 140 form a motor. Specifically, one of the module housing 110 and the lens body 120 is provided with the first coil 130, and the other is provided with the magnetic portion 140. When energized, the first coil 130 can drive the lens body 120 to move within the module housing 110.

[0037] In one embodiment, the module housing 110 may be provided with a first coil 130, and the lens body 120 may be provided with a magnetic portion 140. In this case, when the first coil 130 is energized, the force exerted by the first coil 130 on the magnetic portion 140 causes the magnetic portion 140 to move, which in turn can drive the lens body 120 to move, thereby causing the lens body 120 to move relative to the module housing 110. In another alternative embodiment, the module housing 110 may be provided with a magnetic portion 140, and the lens body 120 may be provided with a first coil 130. In this case, when the first coil 130 is energized, the force exerted by the magnetic portion 140 on the first coil 130 causes the first coil 130 to move, which in turn can drive the lens body 120 to move, thereby causing the lens body 120 to move relative to the module housing 110.

[0038] At this time, the first coil 130 and the magnetic part 140 can drive the lens body 120 to move, thereby realizing the anti-shake and focus functions of the camera module 100 .

[0039] For example, when the gyroscope inside the electronic device or camera module 100 detects that the camera module is tilted, the gyroscope will obtain data such as the tilt angle of the camera module 100 and transmit it to the control chip. The control chip inputs the corresponding angle compensation amount, and the control chip first coil 130 outputs the corresponding current, thereby causing the lens body 120 to move, thereby realizing the anti-shake function of the camera module.

[0040] For another example, when the camera module 100 needs to perform a focusing operation, the control chip outputs a corresponding current to the first coil 130, thereby causing the lens body 120 to move along the optical axis direction. Here, the optical axis direction is the direction of the lens body 120. Figure 2 In the Z-axis direction, at this time, the focusing operation of the camera module 100 can be achieved.

[0041] The stopper 150 is disposed within the module housing 110 and is switchable between a first state and a second state. When the stopper 150 is in the first state, the stopper 150 restricts the movement of the lens body 120 relative to the module housing 110. In other words, the lens body 120 is fixedly connected to the module body via the stopper 150. In this case, the stopper 150 secures the lens body 120 to the module housing 110, preventing the lens body 120 from moving.

[0042] When the stopper 150 is in the second state, the stopper 150 allows the lens body 120 to move relative to the module housing 110. In other words, the stopper 150 is disconnected from at least one of the lens body 120 or the module housing 110. In this state, the lens body 120 has a tendency to move relative to the module housing 110. Therefore, when the first coil 130 is energized, the first coil 130 and the magnetic portion 140 can drive the lens body 120 to move within the module housing 110, thereby achieving anti-shake and focus operations for the camera module 100.

[0043] During the specific working process, when the camera module 100 is in the closed state, the limiter 150 is in the first state, at which time the limiter 150 limits the movement of the lens body 120 relative to the module shell 110. Therefore, when the electronic device shakes, since the lens body 120 cannot move relative to the module shell 110, it is difficult for the lens 121 to collide with the module shell 110, thereby avoiding the generation of abnormal noise. When the camera module 100 is in the open state, the limiter 150 is in the second state, at which time the lens body 120 can move freely in the module shell 110, thereby realizing the anti-shake and focus operations of the camera module 100. The closed state here refers to the state when the camera module 100 is not in use, and the open state refers to the state when the camera module 100 is taking pictures.

[0044] In the embodiment disclosed in the present application, when the camera module 100 is in the closed state, the limit member 150 can be in the first state, thereby limiting the movement of the lens body 120 relative to the module shell 110, thereby avoiding the collision between the lens body 120 and the module shell 110 when the electronic device shakes, thereby effectively reducing the abnormal noise of the electronic device.

[0045] In addition, when the limiter 150 is in the first state, it can prevent the lens body 120 from colliding with the module housing 110, thereby avoiding the risk of damage to the lens body 120 or the module housing 110, thereby improving the safety and reliability of the camera module 100.

[0046] In a specific embodiment, the stopper 150 includes a magnetostrictive element 151 and a second coil 152, both of which are disposed within the module housing 110. The second coil 152 can be wound around the magnetostrictive element 151, or alternatively, can be disposed on the module housing 110.

[0047] When the second coil 152 is not energized, the height of the magnetostrictive element 151 is a first height. When the second coil 152 is energized, the height of the magnetostrictive element 151 is a second height, wherein the first height is greater than the second height.

[0048] When the magnetostrictive element 151 is at a first height, it abuts the lens body 120 against the module housing 110, limiting the movement of the lens body 120 relative to the module housing 110. At this point, when the magnetostrictive element 151 is at the first height, the limiting element is in a first state. When the magnetostrictive element 151 is at a second height, a gap exists between at least one of the magnetostrictive element 151 and the module housing 110, and the lens body 120, allowing the lens body 120 to move relative to the module housing 110. At this point, when the magnetostrictive element 151 is at the second height, the limiting element is in a second state.

[0049] When the second coil 152 is not energized, the magnetostrictive element 151 is not affected by the electric field. Therefore, the first height of the magnetostrictive element 151 is the height in its natural state. At this time, the magnetostrictive element 151 is relatively high, so the magnetostrictive element 151 can abut the lens body 120 against the module housing 110. It can also be understood here that due to the large height of the magnetostrictive element 151, the magnetostrictive element 151 and the inner surface of the module housing 110 can form a clamping space, thereby clamping the lens body 120. When the second coil 152 is energized, the magnetostrictive element 151 is affected by the electric field, and the height of the magnetostrictive element 151 decreases. As a result, the space formed by the magnetostrictive element 151 and the module housing 110 is larger than the size of the lens body 120, allowing the lens body 120 to move freely within this space.

[0050] In the embodiment disclosed in the present application, the height of the magnetostrictive element 151 is controlled by the power-on state of the second coil 152, thereby adjusting the size of the space formed by the magnetostrictive element 151 and the module housing 110, thereby realizing the switching of the lens body 120 between the moving state and the fixed state, thereby simplifying the structure of the limiter 150, thereby making the structure of the camera module 100 simpler and more reliable.

[0051] In addition, when the second coil 152 and the first coil 130 are energized, the first coil 130 and the second coil 152 act as two electromagnets. At this time, by changing the direction of the current in the second coil 152, the first coil 130 and the second coil 152 are attracted or repelled. Figure 4 As shown, when the lens body 120 moves a large distance toward the top of the module housing 110, the second coil 152 and the first coil 130 generate an attractive force, thereby reducing the speed of the lens body 120 toward the top of the module housing 110 or causing the lens body 120 to move toward the bottom of the module housing 110, thereby preventing the lens body 120 from colliding with the module housing 110 and thus preventing abnormal noise. Similarly, to prevent the lens body 120 from colliding with the limiter 150, the second coil 152 and the first coil 130 generate a repulsive force, thereby preventing the lens body 120 from colliding with the limiter 150 and thus preventing abnormal noise.

[0052] Specifically, during operation, when the gyroscope in the electronic device or camera module 100 detects the magnitude and direction of external shaking, it immediately converts the external shaking information into an electrical signal and sends it to the control chip. The control chip immediately calculates the direction of the shaking and the displacement in the direction that needs to be compensated, and then converts it into the magnitude and direction of the corresponding coil current that needs to be compensated. This coil current is then input into the second coil 152, compensating for the force generated by the external shaking, allowing the lens body 120 to be stabilized in the center of the module housing 110, thereby preventing the occurrence of abnormal noise.

[0053] In this solution, the limiter 150 can not only prevent abnormal noise when the camera module 100 is in the closed state, but also prevent abnormal noise when the camera module 100 is in the open state, thereby further reducing the abnormal noise of the electronic device and further improving the user experience.

[0054] Furthermore, the second coil 152 can also provide a certain driving force for the lens body 120. Therefore, when the lens body 120 is performing anti-shake and focusing operations, the second coil 152 and the first coil 130 can jointly drive the movement of the lens body 120. This is equivalent to splitting the coil into two parts, thereby reducing the weight of the lens body 120. When the weight of the lens body 120 is reduced, the abnormal noise generated by the lens body 120 can also be further reduced.

[0055] In the above embodiment, when the second coil 152 is energized, the directions of the current flowing therethrough are different, so the directions of the deformation produced by the magnetostrictive deformable element 151 are different. Figure 7 and Figure 8 As shown, the direction indicated by arrow A is the direction of the magnetic flux lines of the magnetic field of the second coil 152, and the direction indicated by arrow B is the deformation direction of the magnetostrictive element 151. At this time, when the current is flowing in a counterclockwise direction, the magnetostrictive element 151 is stretched along its length, thereby reducing the height of the magnetostrictive element 151.

[0056] like Figure 9 As shown, the direction indicated by arrow C is the deformation direction of the magnetostrictive element 151. At this time, when the current is in a clockwise direction, the magnetostrictive element 151 is stretched along its width direction, thereby reducing the height of the magnetostrictive element 151.

[0057] At this time, when the second coil 152 is energized, the height of the magnetostrictive element 151 decreases regardless of the direction of the current. After the power is turned off, the height of the magnetostrictive element 151 returns to its natural state, that is, the height when there is no force.

[0058] Optionally, the magnetostrictive element 151 may be made of nickel, nickel-based alloy, iron-based alloy, ferrite or other materials.

[0059] In the above embodiment, the camera module 100 also includes a photosensitive chip 170 and a circuit board 180. The photosensitive chip 170 is positioned opposite the lens body 120. Light from the external environment enters the camera module 100 through the lens body 120 and is then transmitted to the photosensitive chip 170, where it is converted into image information. Optionally, the photosensitive chip 170 can be a high-resolution photosensitive chip 170, thereby improving the performance of the camera module and, in turn, providing a better user experience for the electronic device. The photosensitive chip 170 can be a complementary metal oxide semiconductor (CMOS) imaging chip. The photosensitive chip 170 is disposed on the circuit board 180, which is electrically connected to the photosensitive chip 170. The circuit board 180 provides power to the camera module 100 and performs data transmission. The circuit board 180 can be connected to the main board or sub-board of the electronic device via a flexible circuit board. The aforementioned control chip can be disposed on the circuit board 180 or on the main board or sub-board of the electronic device, without limitation herein.

[0060] In another optional embodiment, the magnetostrictive element 151 may include a magnetic fluid film 1511 and a rigid bearing portion 1512. Magnetic fluid, also known as magnetic liquid or magnetic fluid, is a novel functional material that combines magnetism with the fluidity of a liquid. It exhibits no magnetic attraction in a static state and exhibits magnetism only under an applied magnetic field. It is a stable adhesive liquid. The magnetic fluid film comprises an elastic film and a magnetic fluid. The elastic film is filled with magnetic fluid. When subjected to an external magnetic field, the magnetic fluid flows, stretching the elastic film, thereby thinning the elastic film and reducing the thickness of the magnetic fluid film.

[0061] The magnetic fluid film 1511 may be disposed on the module housing 110, and the rigid supporting portion 1512 may be disposed on the magnetic fluid film 1511. The rigid supporting portion 1512 is rigid and thus cannot be deformed, so its height does not change.

[0062] During the process of switching the second coil 152 between the energized and de-energized states, the thickness of the magnetic fluid film 1511 changes, driving the rigid support portion 1512 to move within the module housing 110, causing the height of the magnetostrictive element 151 to switch between the first height and the second height. At this time, when the second coil 152 is de-energized, the magnetic fluid film 1511 is not affected by the electric field, and therefore the thickness of the magnetic fluid film 1511 is the thickness in its natural state. The first height of the magnetostrictive element 151 is the sum of the thickness of the magnetic fluid film 1511 and the height of the rigid support portion 1512. When the second coil 152 is energized, the magnetic fluid film 1511 is affected by the electric field, and the thickness of the magnetic fluid film 1511 decreases. Therefore, the second height of the magnetostrictive element 151 is the sum of the thickness of the magnetic fluid film 1511 and the height of the rigid support portion 1512. Since the height of the rigid bearing portion 1512 remains unchanged, the height of the magnetostrictive element 151 is changed by changing the thickness of the magnetic fluid film 1511 , thereby achieving the state switching of the limiting element 150 .

[0063] During operation, when the magnetostrictive element 151 is at a first height, the end of the rigid support portion 1512 facing away from the magnetic fluid film 1511 and the module housing 110 respectively abut against opposite sides of the lens body 120. When the magnetostrictive element 151 is at a second height, the aforementioned gap exists between at least one of the end of the rigid support portion 1512 facing away from the magnetic fluid film 1511 and the module housing 110 and the lens body 120.

[0064] In this solution, the magnetic fluid film 1511 has good deformation performance, thereby further improving the deformation performance of the magnetostrictive element 151. In addition, the rigid bearing portion 1512 has good support performance, thus having good stability when clamping and fixing the lens body 120, avoiding the risk of shaking of the lens body 120.

[0065] Optionally, the rigid bearing portion 1512 may be made of metal materials, such as iron, steel and other metal materials, and may also be made of non-metal materials, such as plastic and other materials.

[0066] Furthermore, the second coil 152 can be wound on the rigid supporting portion 1512. In this solution, the second coil 152 is wound around the rigid supporting portion 1512, which simplifies the structure of the module housing 110 and avoids occupying the installation position of the module housing 110, thereby being more conducive to the development of a thinner and lighter camera module.

[0067] In another optional embodiment, the lens body 120 may have a first end surface 1201 and a second end surface 1202 that are disposed opposite to each other. When the height of the magnetostrictive element 151 is at the first height, as shown in FIG. Figure 1As shown, the first end face 1201 abuts against the magnetostrictive element 151, and the second end face 1202 abuts against the module housing 110. When the height of the magnetostrictive element 151 is at the second height, as shown in FIG. Figure 2 As shown, at least one of the gaps between the first end face 1201 and the magnetostrictive element 151 and the second end face 1202 and the module housing 110 has the gap. Figure 2 As shown, when the stopper 150 is in the second state, due to the influence of the gravity of the lens body 120 itself, the lens body 120 is supported on the stopper 150, and there is a gap between the second end surface 1202 of the lens body 120 and the top of the module housing 110, so that the lens body 120 can move relative to the module housing 110. Or, as Figure 3 As shown, under the action of the first coil 130 and the magnetic part 140, when the stopper 150 is in the second state, the second end surface 1202 of the lens body 120 abuts against the top of the module housing 110, and there is a gap between the first end surface 1201 of the lens body 120 and the stopper 150, so that the lens body 120 can move relative to the module housing 110. For another example, Figure 4 In the illustrated scheme, when the lens body 120 moves, there is a first gap between the first end face 1201 of the lens body 120 and the limiter 150, and a second gap between the second end face 1202 and the module shell 110. At this time, the lens body 120 is separated from the module shell 110 and the limiter 150.

[0068] In the first state, the stopper 150 forms a clamping structure with the module housing 110, thereby clamping the lens body 120 and limiting the movement of the lens body 120. At this time, the distance between the stopper 150 and the module housing 110 is equal to the distance between the first end surface 1201 and the second end surface 1202. In the second state, the distance between the stopper 150 and the module housing 110 is greater than the distance between the first end surface 1201 and the second end surface 1202, thereby reserving space for the movement of the lens body 120.

[0069] In this solution, the magnetostrictive element 151 and the module housing 110 can abut against the end surfaces of the lens body 120 on both sides opposite to each other, thereby further improving the stability and reliability of the clamping.

[0070] In another optional embodiment, the stopper 150 may be an electrodeformable element, one end of which is connected to the module housing 110, and the other end of which may be used to support the first end surface 1201. In this case, when the electrodeformable element is energized, the stopper 150 extends, allowing the stopper 150 and the module housing 110 to jointly clamp the lens body 120. When the electrodeformable element is deenergized, the stopper 150 shortens, leaving space for the lens body 120 to move between the stopper 150 and the module housing 110. Alternatively, when the electrodeformable element is energized, the stopper 150 shortens, leaving space for the lens body 120 to move between the stopper 150 and the module housing 110; when the electrodeformable element is deenergized, the stopper 150 extends, allowing the stopper 150 and the module housing 110 to jointly clamp the lens body 120.

[0071] Optionally, the electrodeformable element can be made of memory alloy or piezoelectric material. Of course, the limiting element 150 can also be made of other electrodeformable materials, which is not limited herein.

[0072] In the above embodiment, the first end surface 1201 and the second end surface 1202 may be arranged in a direction perpendicular to the optical axis of the lens body 120 .

[0073] In another optional solution, the first end surface 1201 and the second end surface 1202 are arranged along the optical axis of the lens body 120. In this solution, the first end surface 1201 and the second end surface 1202 are arranged along the optical axis of the lens body 120. The movement direction of the lens body 120 relative to the module housing 110 is also along the optical axis. Therefore, the limiting direction of the lens body 120 is also along the optical axis, thereby achieving a better limiting effect on the lens body 120 and preventing the risk of accidental movement of the lens body 120 and abnormal noise.

[0074] In another optional embodiment, there may be multiple limiting members 150, which may be spaced apart along the circumference of the lens body 120. This solution can further improve the limiting effect of the lens body 120, thereby further improving the reliability of the camera module 100.

[0075] Furthermore, the camera module 100 may further include a filter 160, which may be disposed within the module housing 110. The stopper 150 may be supported on the side of the filter 160 facing the lens body 120. In this solution, the stopper 150 may be directly supported on the filter 160, eliminating the need for a separate component for supporting the stopper 150. This simplifies the structure of the camera module 100 and further reduces the manufacturing cost of the camera module 100.

[0076] In the above embodiment, the magnetic fluid film 1511 can be bonded to the filter 160 by adhesive structures such as glue and double-sided tape.

[0077] In another alternative embodiment, the lens body 120 may include a lens 121 and a carrier portion 122. The lens 121 may be disposed within the carrier portion 122, and the magnetic portion 140 or the first coil 130 may be disposed within the carrier portion 122. The lens 121 may include components such as a lens and a lens barrel. In this case, the lens 121 is located within the carrier portion 122, thereby better protecting the lens 121 and preventing the risk of damage to the lens 121.

[0078] Based on the camera module 100 disclosed in the embodiment of the present application, the embodiment of the present application further discloses an electronic device, and the disclosed electronic device includes the camera module 100 described in any of the above embodiments.

[0079] The electronic device disclosed in this application also includes a device body, which includes but is not limited to a device housing, a main board, a display screen, and other components. The gyroscope and control chip mentioned above can both be disposed on the device body.

[0080] The electronic devices disclosed in the embodiments of the present application may be smart phones, tablet computers, e-book readers, wearable devices (such as smart watches), electronic game consoles, and other devices. The embodiments of the present application do not limit the specific types of electronic devices.

[0081] Based on the camera module 100 disclosed in the embodiment of the present application, the embodiment of the present application discloses a control method of the camera module 100. The disclosed control method is applied to the camera module 100 as described above. Figure 10 As shown, the disclosed control method includes:

[0082] S101 , obtaining the current state and next state of the camera module 100 .

[0083] The camera module 100 has an on state and an off state. The on state refers to the state in which the camera module 100 is shooting, which can also be understood as the state in which the camera module 100 is powered on. The off state refers to the state in which the camera module 100 is not in use, which can also be understood as the state in which the camera module 100 is powered off.

[0084] S102, control the camera module 100 to switch from the current state to the next state. When the current state is the off state and the next state is the on state, switch the second coil 152 from the off state to the powered state; when the current state is the on state and the next state is the off state, switch the second coil 152 from the powered state to the off state.

[0085] At this time, when the camera module 100 is in the closed state, the limiter 150 is in the first state, that is, the second coil 152 is not energized, and the height of the magnetostrictive element 151 is the first height. Therefore, the limiter 150 restricts the movement of the lens body 120 relative to the module housing 110. When the camera module 100 is in the open state, the limiter 150 switches from the first state to the second state. At this time, the second coil 152 is energized, the height of the magnetostrictive element 151 is the second height, and the limiter 150 allows the lens body 120 to move relative to the module housing 110.

[0086] In the embodiment disclosed in the present application, when the camera module 100 is in the closed state, the limit member 150 can be in the first state, thereby limiting the movement of the lens body 120 relative to the module shell 110, thereby avoiding the collision between the lens body 120 and the module shell 110 when the electronic device shakes, thereby effectively reducing the abnormal noise of the electronic device.

[0087] Based on the control method disclosed in the embodiment of the present application, the embodiment of the present invention discloses a control device for a camera module 100. The disclosed control device includes:

[0088] An acquisition module, used to obtain the current state and next state of the camera module 100;

[0089] The control module is used to control the camera module 100 to switch from the current state to the next state, wherein: when the current state is the off state and the next state is the on state, the control module is used to control the second coil 152 to switch from the off state to the powered state; when the current state is the on state and the next state is the off state, the control module is used to control the second coil 152 to switch from the powered state to the off state.

[0090] In this solution, when the camera module 100 is in the closed state, the limit member 150 can be in the first state, thereby limiting the movement of the lens body 120 relative to the module shell 110, thereby avoiding the collision between the lens body 120 and the module shell 110 when the electronic device shakes, thereby effectively reducing the abnormal noise of the electronic device.

[0091] Alternatively, as Figure 11 As shown, an embodiment of the present application also provides an electronic device 500, including a processor 520, a memory 510, and a program or instruction stored in the memory 510 and executable on the processor 520. When the program or instruction is executed by the processor 520, each process of the control method embodiment of the above-mentioned electronic device is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be described here.

[0092] Figure 12A schematic diagram of the hardware structure of an electronic device implementing an embodiment of the present application.

[0093] The electronic device 400 includes, but is not limited to, a radio frequency unit 410, a network module 420, an audio output unit 430, an input unit 440, a sensor 450, a display unit 460, a user input unit 470, an interface unit 480, a memory 490, and a processor 401. The input unit 440 includes the camera module 100 disclosed in the embodiment of the present application.

[0094] Those skilled in the art will understand that the electronic device 400 may also include a power supply (such as a battery) to power each component. The power supply can be logically connected to the processor 401 through a power management system, so that functions such as charging, discharging, and power consumption management can be managed through the power management system. Figure 12 The structure of the electronic device shown in the figure does not constitute a limitation of the electronic device. The electronic device may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently, which will not be repeated here.

[0095] The user input unit 470 is used for the user to input the next state.

[0096] The processor 401 is used to process and obtain the next state, and of course the camera module 100 switches from the current state to the next state. At this time, if the current state is the closed state and the next state is the open state, the processor 401 controls the limiter 150 to switch from the first state to the second state. If the current state is the open state and the switch state is the closed state, the processor 401 controls the limiter 150 to switch from the second state to the first state.

[0097] In the embodiment disclosed in the present application, when the camera module 100 is in the closed state, the limit member 150 can be in the first state, thereby limiting the movement of the lens body 120 relative to the module shell 110, thereby avoiding the collision between the lens body 120 and the module shell 110 when the electronic device shakes, thereby effectively reducing the abnormal noise of the electronic device.

[0098] It should be understood that in the embodiments of the present application, the input unit 440 may include a graphics processing unit (GPU) 441 and a microphone 442. The GPU 441 processes image data of still images or videos captured by an image capture device (e.g., a camera) in video capture mode or image capture mode. The display unit 460 may include a display device, which may include a display panel 461. Display panel 461 may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like. The user input unit 470 includes a touch panel 471 and other input devices 472. Touch panel 471, also known as a touch screen, may include a touch detection device and a touch controller. Other input devices 472 may include the control assembly 100 disclosed herein. Other input devices 472 may also include, but are not limited to, a physical keyboard, function keys (such as volume control keys, power buttons, etc.), a trackball, a mouse, and a joystick, which will not be further described here. Memory 490 may be used to store software programs and various data, including but not limited to application programs 491 and an operating system 492. The processor 401 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, and application programs, and the modem processor mainly processes wireless communications. It is understandable that the modem processor may not be integrated into the processor 401.

[0099] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the control method embodiment of the above-mentioned electronic device are implemented and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0100] 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), random access memory (RAM), a magnetic disk, or an optical disk.

[0101] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned electronic device control method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0102] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0103] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0104] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases the former is a more preferred embodiment. Based on this understanding, the technical solution of this application, or the part that contributes to the existing technology, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for enabling a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in each embodiment of this application.

[0105] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A camera module, characterized in that: include: A module housing (110), a lens body (120), a first coil (130) and a magnetic portion (140), wherein the lens body (120) is movably disposed in the module housing (110), one of the module housing (110) and the lens body (120) is provided with the first coil (130), and the other is provided with the magnetic portion (140), and the first coil (130) can drive the lens body (120) to move in the module housing (110) when energized; A limiting member (150), the limiting member (150) comprising a magnetostrictive deformable member (151) and a second coil (152), the magnetostrictive deformable member (151) and the second coil (152) both being arranged in the module housing (110); when the second coil (152) is in an unpowered state, the height of the magnetostrictive deformable member (151) is a first height; when the second coil (152) is in an energized state, the height of the magnetostrictive deformable member (151) is a second height; wherein the first height is greater than the second height; When the height of the magneto-deformable element (151) is at the first height, the magneto-deformable element (151) abuts the lens body (120) against the module housing (110) to limit the movement of the lens body (120) relative to the module housing (110); when the height of the magneto-deformable element (151) is at the second height, a gap exists between at least one of the magneto-deformable element (151) and the module housing (110) and the lens body (120), and the gap is used for the movement of the lens body (120) relative to the module housing (110).

2. The camera module according to claim 1, wherein: The magnetostrictive deformable element (151) comprises a magnetostrictive fluid film (1511) and a rigid bearing portion (1512); the magnetostrictive fluid film (1511) is arranged on the module housing (110); and the rigid bearing portion (1512) is arranged on the magnetostrictive fluid film (1511); when the second coil (152) switches between the energized state and the unenergized state, the thickness of the magnetostrictive fluid film (1511) changes, thereby driving the rigid bearing portion (1512) to move within the module housing (110), so that the height of the magnetostrictive deformable element (151) switches between the first height and the second height; When the height of the magnetostrictive deformable element (151) is at the first height, the end of the rigid bearing portion (1512) away from the magnetic fluid film (1511) and the module shell (110) respectively abut against opposite sides of the lens body (120); when the height of the magnetostrictive deformable element (151) is at the second height, there is the gap between the end of the rigid bearing portion (1512) away from the magnetic fluid film (1511) and at least one of the module shell (110) and the lens body (120).

3. The camera module according to claim 2, wherein: The second coil (152) is wound on the rigid bearing portion (1512).

4. The camera module according to claim 1, wherein: The lens body (120) has a first end face (1201) and a second end face (1202) that are arranged in opposite directions; when the height of the magnetostrictive deformation member (151) is at the first height, the first end face (1201) abuts against the magnetostrictive deformation member (151), and the second end face (1202) abuts against the module housing (110); when the height of the magnetostrictive deformation member (151) is at the second height, at least one of the first end face (1201) and the magnetostrictive deformation member (151) and the second end face (1202) and the module housing (110) has the gap.

5. The camera module according to claim 4, wherein: The first end surface (1201) and the second end surface (1202) are arranged along the optical axis direction of the lens body (120).

6. The camera module according to claim 1, wherein: There are a plurality of the limiting members (150), and the plurality of limiting members (150) are arranged at intervals along the circumference of the lens body (120).

7. The camera module according to claim 1, wherein: The camera module (100) further comprises a filter (160), wherein the filter (160) is arranged in the module housing (110), and the magneto-deformable member (151) is carried on a side of the filter (160) facing the lens body (120).

8. The camera module according to claim 1, wherein: The lens body (120) comprises a lens (121) and a carrier portion (122); the lens (121) is arranged in the carrier portion (122); and the magnetic portion (140) or the first coil (130) is arranged in the carrier portion (122).

9. An electronic device, characterized in that: It comprises a device body and a camera module (100) according to any one of claims 1 to 8, wherein the camera module (100) is arranged on the device body.

10. A method for controlling a camera module, characterized in that: The control method is applied to the camera module (100) according to any one of claims 1 to 8, and the control method comprises: Obtaining the current state and next state of the camera module (100); The camera module (100) is controlled to switch from the current state to the next state. When the current state is the off state and the next state is the on state, the second coil (152) is switched from the off state to the energized state; when the current state is the on state and the next state is the off state, the second coil (152) is switched from the energized state to the off state.

11. A control device for a camera module, characterized in that: The camera module (100) applied to any one of claims 1 to 8, wherein the control device comprises: An acquisition module, used to acquire the current state and next state of the camera module (100); A control module is used to control the camera module (100) to switch from the current state to the next state, wherein: when the current state is the off state and the next state is the on state, the control module is used to control the second coil (152) to switch from the off state to the powered state; when the current state is the on state and the next state is the off state, the control module is used to control the second coil (152) to switch from the powered state to the off state.

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