CN220798433U - Camera module and electronic equipment - Google Patents

Abstract

The utility model provides a camera module and electronic equipment, and belongs to the technical field of electronics. The camera module includes: the device comprises a moving part module, a fixed part module and a positioning module; the movable part module is movably connected with the fixed part module, and can rotate relative to the fixed part module; the positioning module comprises at least one movable polar plate and at least one fixed polar plate; at least one movable polar plate is positioned on the movable part module, at least one fixed polar plate is positioned on the fixed part module, and the positions of the at least one movable polar plate and the at least one fixed polar plate are opposite; when the movable part module rotates relative to the fixed part module, at least one movable polar plate moves relative to at least one fixed polar plate, and the right facing area between the at least one movable polar plate and the at least one fixed polar plate is changed. The utility model adopts the movable polar plate and the fixed polar plate to form the capacitive positioning module, has simple structure and small size, and can solve the problems of high cost, magnetic field interference, temperature drift and the like existing in the Hall device.

Description

Camera module and electronic equipment

Technical Field

The present utility model relates to the field of electronic technologies, and in particular, to a camera module and an electronic device.

Background

With the progress of technology, a motor for driving a lens to realize quick and stable focusing is arranged inside a camera in a mobile phone. These motors are classified into an AF (auto focus) motor having only an auto focus function and an OIS (Optical Image Stabilization, optical anti-shake stabilization) motor having an anti-shake effect at the same time, depending on whether or not they have an anti-shake effect.

These motors typically use hall devices to sense the position of the lens assembly to achieve closed loop control of the lens assembly by the camera, but this approach has the following problems: the Hall device has the problems of high cost, magnetic field interference, temperature drift and the like.

Disclosure of utility model

The utility model provides a camera module and electronic equipment, which can solve the problems of high cost, magnetic field interference, temperature drift and the like of a camera motor adopting a Hall device.

The technical scheme is as follows:

In one aspect, a camera module is provided, the camera module includes: the device comprises a moving part module, a fixed part module and a positioning module;

The movable part module is movably connected with the fixed part module, and the movable part module can rotate relative to the fixed part module;

the positioning module comprises at least one movable polar plate and at least one fixed polar plate;

the at least one movable polar plate is positioned on the movable part module, the at least one fixed polar plate is positioned on the fixed part module, and the positions of the at least one movable polar plate and the at least one fixed polar plate are opposite;

When the movable part module rotates relative to the fixed part module, the at least one movable polar plate moves relative to the at least one fixed polar plate, and the opposite area between the at least one movable polar plate and the at least one fixed polar plate is changed.

In some embodiments, the spacing between the at least one movable plate and the at least one stationary plate is unchanged when the at least one movable plate is active with respect to the at least one stationary plate.

In some embodiments, the at least one movable electrode plate is at any two positions during the movement process relative to the at least one stationary electrode plate, and the facing areas between the at least one movable electrode plate and the at least one stationary electrode plate are different.

In some embodiments, the at least one movable plate extends in a first direction toward and away from the center of rotation, and the locus of extension of the at least one stationary plate intersects the first direction.

In some embodiments, the at least one stationary plate extends in a linear or arcuate path.

In some embodiments, the at least one movable plate has a region facing the at least one movable plate that has a different dimension along the first direction when the at least one movable plate is in a different position.

In some embodiments, at least one of the two sides of the at least one stationary plate along the first direction is arcuate.

In some embodiments, the at least one movable plate includes a first end and a second end, the first end and the second end being arranged along the first direction; the width of the at least one movable plate between the first end and the second end remains unchanged.

In some embodiments, the number of the fixed polar plates is at least two, at least two fixed polar plates are arranged at intervals along the first direction, and in the moving process of the at least one movable polar plate, a right-facing area is formed between at least one of the at least two fixed polar plates and the at least one movable polar plate.

In some embodiments, the mover module includes one of a lens assembly and a photosensitive assembly, and the stator module includes the other of the lens assembly and the photosensitive assembly; when the lens component and the photosensitive component relatively rotate, the right facing area between the at least one movable polar plate and the at least one fixed polar plate is changed.

In some embodiments, the positioning module further comprises a capacitance measurement module, a first matching module, and a second matching module;

The capacitance measuring module is respectively and electrically connected with the at least one movable polar plate and the at least one fixed polar plate, and is used for measuring the current capacitance value between the at least one movable polar plate and the at least one fixed polar plate;

The first matching module is electrically connected with the capacitance measuring module, and is used for determining the current dead-facing area between the at least one movable polar plate and the at least one fixed polar plate corresponding to the capacitance value according to a first matching relation; the first matching relationship is a corresponding relationship between capacitance values and opposite areas of the at least one movable polar plate and the at least one fixed polar plate;

The second matching module is electrically connected with the first matching module, and is used for determining the relative positions of the lens assembly and the photosensitive assembly corresponding to the current dead-facing area according to a second matching relation; the first matching relationship is a corresponding relationship between the positive areas of the at least one movable polar plate and the at least one fixed polar plate and the relative positions of the lens component and the photosensitive component.

On the other hand, the electronic equipment comprises the camera module.

The technical scheme provided by the utility model has the beneficial effects that at least:

The camera module comprises a moving part module, a fixed part module and a positioning module, wherein the moving part module can rotate relative to the fixed part module to realize zooming and/or anti-shake of the camera module, and the positioning module is used for determining the relative positions of the moving part module and the fixed part module to realize closed loop of zooming and/or anti-shake; the movable polar plate of the positioning module is positioned on the movable part module and can rotate together with the movable part module, the positioning polar plate is positioned on the fixed part module, the opposite areas of the movable part module and the fixed part module are changed along with the rotation of the movable polar plate, the opposite positions of the movable polar plate and the fixed polar plate can be determined according to the opposite areas, and then the relative positions of the movable part module and the fixed part module are determined, so that closed-loop zooming and/or closed-loop anti-shake of the camera module are realized;

The capacitive positioning module formed by the movable polar plate and the fixed polar plate has the advantages of simple structure and small size, and can solve the problems of high cost, magnetic field interference, temperature drift and the like existing in the Hall device.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a camera module according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of the facing areas of a movable plate and a stationary plate in a certain state according to an embodiment of the present utility model;

FIG. 3 is a schematic illustration of the facing areas of the other states of the movable and stationary plates provided by an embodiment of the present utility model;

FIG. 4 is a schematic structural diagram of a positioning module according to an embodiment of the present utility model;

FIG. 5 is a schematic view of the structure of a movable plate and a stationary plate according to another embodiment of the present utility model;

Fig. 6 is a schematic structural diagram of a movable plate and a fixed plate according to another embodiment of the present utility model.

Reference numerals in the drawings are respectively expressed as:

1. a moving part module;

2. A piece fixing module;

3. a positioning module;

31. a movable polar plate; 3101. a first end; 3102. a second end; 32. a fixed polar plate; 33. a capacitance measurement module; 34. a first matching module; 35. a second matching module;

A. a first direction.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the utility model. Rather, they are merely examples of apparatus and methods consistent with aspects of the utility model as detailed in the accompanying claims.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in fig. 1 are merely for convenience in describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Unless defined otherwise, all technical terms used in the embodiments of the present utility model have the same meaning as commonly understood by one of ordinary skill in the art.

The Hall device is a solid-state electronic device utilizing the Hall effect, takes a magnetic field as a working medium, converts motion parameters of an object into a digital voltage form and outputs the digital voltage, so that the Hall device has the functions of sensing and switching.

Focal length, also known as focal length, is a measure of the concentration or divergence of light in an optical system, and refers to the distance from the center of a lens to the focal point at which the light is concentrated. Focusing is also called focusing light, focusing. The focusing process of the photographed object is focusing by changing the object distance and the distance position through the camera focusing mechanism.

Anti-shake (Image Stabilization) is a technique aimed at reducing image blur caused by instability of a hand-held camera or video camera. When we hold a camera or video camera, even slight hand shake can cause image blurring, especially when using longer focal length or low light conditions. Anti-shake techniques provide a more stable image by using a sensor or lens movement to counter such shake. Wherein, the lens moving mode is optical anti-shake (Optical Image Stabilization, OIS), and the sensor moving mode is sensor shift anti-shake (sensor shift).

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the embodiments of the present utility model will be described in further detail with reference to the accompanying drawings.

In one aspect, as shown in connection with fig. 1-3, there is provided a camera module, the camera module comprising: a moving part module 1, a fixed part module 2 and a positioning module 3.

The movable element module 1 is movably connected with the fixed element module 2, and the movable element module 1 can rotate relative to the fixed element module 2; the positioning module 3 comprises at least one movable plate 31 and at least one fixed plate 32; at least one movable electrode plate 31 is positioned on the movable element module 1, at least one fixed electrode plate 32 is positioned on the fixed element module 2, and the positions of the at least one movable electrode plate 31 and the at least one fixed electrode plate 32 are opposite; when the movable element module 1 rotates relative to the fixed element module 2, at least one movable electrode plate 31 moves relative to at least one fixed electrode plate 32, and the facing area between the at least one movable electrode plate 31 and the at least one fixed electrode plate 32 changes.

The camera module comprises a moving part module 1, a fixed part module 2 and a positioning module 3, wherein the moving part module 1 can rotate relative to the fixed part module 2 to realize zooming and/or anti-shake of the camera module, and the positioning module 3 is used for determining the relative positions of the moving part module 1 and the fixed part module 2 to realize zooming and/or anti-shake closed loop; the movable polar plate 31 of the positioning module 3 is positioned on the movable part module 1, can rotate together with the movable part module 1, the fixed polar plate 32 is positioned on the fixed part module 2, the opposite areas of the movable part module 1 and the fixed part module 2 are changed along with the rotation, the opposite positions of the movable polar plate 31 and the fixed polar plate 32 can be determined according to the opposite areas, and then the relative positions of the movable part module 1 and the fixed part module 2 are determined, so that closed-loop zooming and/or closed-loop anti-shake of the camera module are realized.

The movable polar plate 31 and the fixed polar plate 32 are adopted to form the capacitive positioning module 3, so that the capacitive positioning module has a simple structure and small size, and can solve the problems of high cost, magnetic field interference, temperature drift and the like existing in the Hall device.

Wherein the position of the at least one movable electrode plate 31 is opposite to the position of the at least one fixed electrode plate 32 to form at least one capacitor structure.

The number of the movable electrode plates 31 and the fixed electrode plates 32 may be the same or different, wherein the number of each electrode plate may be one, two, three, etc.

The positions of the movable electrode plate 31 and the fixed electrode plate 32 are not limited to be in one-to-one correspondence, and may be in one-to-many or in many-to-one correspondence.

As shown in connection with fig. 1, in some embodiments, the spacing between at least one movable plate 31 and at least one stationary plate 32 is unchanged when at least one movable plate 31 is movable relative to at least one stationary plate 32.

The decision formula according to the capacitor device is: c=εs/pi kd (C is a capacitance value, ε is a constant, S is a facing area of the capacitor plate, d is a distance of the capacitor plate, and k is an electrostatic force constant), and when the distance d of the capacitor plate is a constant value, the capacitance value of the capacitor is proportional to the facing area S only, so that the change in position of the movable element module 1 can be detected by the change in capacitance value of the capacitor caused by the change in the facing area.

As shown in connection with fig. 2 and 3, in some embodiments, at least one movable electrode plate 31 is positioned at any two positions during the movement of at least one stationary electrode plate 32, and the facing areas between at least one movable electrode plate 31 and at least one stationary electrode plate 32 are different.

When the movable electrode plate 31 rotates to the first position, the opposite area 1 is formed between the movable electrode plate 31 and the fixed electrode plate 32, and when the movable electrode plate 31 rotates to the second position, the opposite area 2 is formed between the movable electrode plate 31 and the fixed electrode plate 32, and as can be seen from the figure, the opposite area 1 is larger than the opposite area 2, so that when the movable electrode plate 31 is positioned at the first position, the capacitance value between the movable electrode plate 31 and the fixed electrode plate 32 is larger, and when the movable electrode plate 31 is positioned at the second position, the capacitance value between the movable electrode plate 31 and the fixed electrode plate 32 is smaller, thereby determining the position of the movable electrode plate 31.

Illustratively, the facing areas between the movable polar plate 31 and the fixed polar plate 32 are different, each facing area corresponds to a capacitance value, so that after the capacitance value between the movable polar plate 31 and the fixed polar plate 32 is measured by an electrical means, the facing area between the movable polar plate 31 and the fixed polar plate 32 can be determined by data matching, the facing area between the movable polar plate 31 and the fixed polar plate 32 is a design value, and the corresponding facing area can be generated only when the movable polar plate 31 and the fixed polar plate 32 are positioned at specific positions, so that the movable polar plate 31 and the fixed polar plate 32 are positioned at specific positions according to the capacitance values.

As shown in connection with fig. 2-6, in some embodiments, at least one movable plate 31 extends in a first direction a toward and away from the center of rotation, and the locus of extension of at least one stationary plate 32 intersects the first direction a.

By the arrangement, when the movable polar plate 31 and the follower module 1 rotate, the movable polar plate 31 and the fixed polar plate 32 can be ensured to have opposite areas all the time, namely, the relative positions of the movable polar plate 31 and the fixed polar plate 32 can be determined at any time.

As shown in connection with fig. 2-6, in some embodiments, at least one stationary platen 32 extends in a linear or arcuate path. With the above arrangement, it is possible to ensure that the movable plate 31 and the fixed plate 32 always have the facing areas.

The stationary plate 32 shown in fig. 2, 3 and 4 extends in an arc track, and the stationary plate 32 shown in fig. 5 and 6 extends in a straight track.

As shown in connection with fig. 2-6, in some embodiments, when at least one movable plate 31 is located at a different position, the area of at least one stationary plate 32 facing at least one movable plate 31 is different in size along the first direction a, or is described as a different spacing between one side of the stationary plate 32 closer to the center of rotation and the other side farther from the center of rotation.

By the arrangement, when the movable polar plate 31 rotates, the right facing areas of the movable polar plate 31 and the fixed polar plate 32 can be changed regularly. In the fixed polar plate 32 shown in fig. 2 and 3, the dimension of the fixed polar plate 32 along the first direction a gradually decreases from top to bottom, so that the facing area between the movable polar plate 31 and the fixed polar plate 32 gradually changes. In the fixed polar plate 32 shown in fig. 5 and 6, the dimension of the fixed polar plate 32 along the first direction a is reduced from top to bottom and then increased, so that the facing area between the movable polar plate 31 and the fixed polar plate 32 is gradually changed.

As shown in connection with fig. 2-6, in some embodiments, at least one of the two sides of the at least one stationary plate 32 along the first direction a is arcuate.

By designing at least one of both side edges of the fixed plate 32 in the first direction a to be arc-shaped, the facing area between the movable plate 31 and the fixed plate 32 can be gradually changed.

As shown in connection with fig. 1-6, in some embodiments, at least one movable plate 31 includes a first end 3101 and a second end 3102, the first end 3101 and the second end 3102 being arranged along a first direction a; the width of at least one movable plate 31 between the first end 3101 and the second end 3102 remains unchanged.

By the arrangement, the width of the movable polar plate 31 is kept unchanged, so that the shape of the movable polar plate 31 is regular, and the relative position of the movable polar plate 31 and the fixed polar plate 32 can be determined through the opposite area only by considering the shape of the fixed polar plate 32, thereby simplifying the structural complexity of the positioning module 3.

As shown in connection with fig. 6, in some embodiments, the number of the fixed polar plates 32 is at least two, the at least two fixed polar plates 32 are arranged at intervals along the first direction a, and during the activity of the at least one movable polar plate 31, a facing area is formed between at least one of the at least two fixed polar plates 32 and the at least one movable polar plate 31.

By using at least two fixed polar plates 32 which are arranged at intervals along the first direction A and respectively form two capacitance structures with the movable polar plate 31, the position of the movable polar plate 31 can be further and accurately positioned, and the positioning accuracy of the positioning module 3 is improved. The arrangement flexibility of the fixed pole plates 32 can be improved, so that the fixed pole plates 32 can meet more use scenes.

In some embodiments, the mover module 1 includes one of a lens assembly and a photosensitive assembly, and the stator module 2 includes the other of the lens assembly and the photosensitive assembly; upon relative rotation of the lens assembly and the photosensitive assembly, the facing area between the at least one movable plate 31 and the at least one stationary plate 32 changes.

Through the arrangement, the relative positions of the lens component and the photosensitive component in the camera module can be determined by using the movable polar plate 31 and the fixed polar plate 32, so that closed-loop focusing and/or closed-loop anti-shake of the camera module are realized.

As shown in connection with fig. 4, in some embodiments, the positioning module 3 further comprises a capacitance measurement module 33, a first matching module 34 and a second matching module 35.

The capacitance measuring module 33 is electrically connected to the at least one movable electrode plate 31 and the at least one fixed electrode plate 32, and the capacitance measuring module 33 is used for measuring a current capacitance value between the at least one movable electrode plate 31 and the at least one fixed electrode plate 32.

The first matching module 34 is electrically connected with the capacitance measuring module 33, and the first matching module 34 is used for determining the current facing area between the at least one movable polar plate 31 and the at least one fixed polar plate 32 corresponding to the capacitance value according to the first matching relation; the first matching relationship is a corresponding relationship between the capacitance value and the facing area of at least one movable electrode plate 31 and at least one fixed electrode plate 32.

The second matching module 35 is electrically connected with the first matching module 34, and the second matching module 35 is used for determining the relative positions of the lens component and the photosensitive component corresponding to the current dead-facing area according to the second matching relation; the first matching relationship is a correspondence relationship between the positive areas of the at least one movable polar plate 31 and the at least one fixed polar plate 32 and the relative positions of the lens component and the photosensitive component.

Therefore, the camera module of the embodiment can utilize the positioning module 3 formed by the movable polar plate 31 and the fixed polar plate 32 to realize the position detection of the lens component and the photosensitive component, and realize the closed-loop focusing and/or the closed-loop anti-shake of the camera module.

On the other hand, the embodiment provides electronic equipment, which comprises the camera module.

The electronic equipment of the embodiment adopts the camera module provided by the utility model, and has all the beneficial technical effects of all the embodiments.

In some possible implementations, the electronic device may be any of a variety of types of computer system devices that are mobile or portable and perform image acquisition. By way of example, the electronic device may be a mobile phone or smart phone, a portable gaming device, a laptop, a PDA, a portable internet device, a music player, and a data storage device, other handheld devices, and a wearable device such as a headset, etc., which may also be other wearable devices that require charging (e.g., a Head Mounted Device (HMD) such as an electronic bracelet, electronic necklace, electronic device, or smart watch).

In some cases, the electronic device may perform a variety of functions (e.g., playing music, displaying video, storing pictures, and receiving and sending phone calls). The electronic device may be, for example, a cellular telephone, a media player, other handheld device, a wristwatch device, a pendant device, an earpiece device, or other compact portable device, if desired.

It should be noted that references herein to "a number", "at least one" means one or more, and "a plurality", "at least two" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present specification, reference to the terms "certain embodiments," "one embodiment," "some embodiments," "an exemplary embodiment," "an example," "a particular example," or "some examples" means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model.

The foregoing description of the embodiments of the utility model is not intended to limit the utility model, but rather, the utility model is to be construed as limited to the embodiments disclosed.

Claims (12)

1. The utility model provides a camera module, its characterized in that, the camera module includes: a moving part module (1), a fixed part module (2) and a positioning module (3);

The movable element module (1) is movably connected with the fixed element module (2), and the movable element module (1) can rotate relative to the fixed element module (2);

the positioning module (3) comprises at least one movable polar plate (31) and at least one fixed polar plate (32);

The at least one movable polar plate (31) is positioned on the movable part module (1), the at least one fixed polar plate (32) is positioned on the fixed part module (2), and the positions of the at least one movable polar plate (31) and the at least one fixed polar plate (32) are opposite;

When the movable part module (1) rotates relative to the fixed part module (2), the at least one movable polar plate (31) moves relative to the at least one fixed polar plate (32), and the facing area between the at least one movable polar plate (31) and the at least one fixed polar plate (32) is changed.

2. Camera module according to claim 1, characterized in that the spacing between the at least one movable plate (31) and the at least one stationary plate (32) is unchanged when the at least one movable plate (31) is movable relative to the at least one stationary plate (32).

3. Camera module according to claim 1, characterized in that the at least one movable plate (31) is located at any two positions during the movement process relative to the at least one stationary plate (32), and the facing areas between the at least one movable plate (31) and the at least one stationary plate (32) are different.

4. Camera module according to claim 1, characterized in that the at least one movable plate (31) extends in a first direction towards and away from the centre of rotation, the extension trajectory of the at least one stationary plate (32) intersecting the first direction.

5. Camera module according to claim 4, characterized in that the at least one stationary plate (32) extends in a rectilinear or arcuate path.

6. The camera module according to claim 4, wherein the at least one stationary plate (32) has a different dimension along the first direction than a region facing the at least one movable plate (31) when the at least one movable plate (31) is located at a different position.

7. The camera module of claim 6, wherein at least one of the two sides of the at least one stationary plate (32) along the first direction is arcuate.

8. The camera module according to claim 4, wherein the at least one movable plate (31) comprises a first end (3101) and a second end (3102), the first end (3101) and the second end (3102) being arranged along the first direction; the width of the at least one movable plate (31) between the first end (3101) and the second end (3102) remains unchanged.

9. The camera module according to claim 4, wherein the number of the fixed polar plates (32) is at least two, the at least two fixed polar plates (32) are arranged at intervals along the first direction, and a facing area is formed between at least one of the at least two fixed polar plates (32) and the at least one movable polar plate (31) during the movement of the at least one movable polar plate (31).

10. Camera module according to any of claims 1 to 9, characterized in that the moving part module (1) comprises one of a lens assembly and a photosensitive assembly, the stationary part module (2) comprises the other of the lens assembly and the photosensitive assembly; when the lens assembly and the photosensitive assembly relatively rotate, the facing area between the at least one movable polar plate (31) and the at least one fixed polar plate (32) is changed.

11. The camera module according to claim 10, wherein the positioning module (3) further comprises a capacitance measurement module (33), a first matching module (34) and a second matching module (35);

The capacitance measurement module (33) is electrically connected with the at least one movable polar plate (31) and the at least one fixed polar plate (32) respectively, and the capacitance measurement module (33) is used for measuring the current capacitance value between the at least one movable polar plate (31) and the at least one fixed polar plate (32);

The first matching module (34) is electrically connected with the capacitance measuring module (33), and the first matching module (34) is used for determining the current dead-facing area between the at least one movable polar plate (31) and the at least one fixed polar plate (32) corresponding to the capacitance value according to a first matching relation; wherein the first matching relationship is a corresponding relationship between capacitance values and opposite areas of the at least one movable polar plate (31) and the at least one fixed polar plate (32);

The second matching module (35) is electrically connected with the first matching module (34), and the second matching module (35) is used for determining the relative positions of the lens component and the photosensitive component corresponding to the current dead-facing area according to a second matching relation; the first matching relationship is a corresponding relationship between the positive area of the at least one movable polar plate (31) and the at least one fixed polar plate (32) and the relative positions of the lens component and the photosensitive component.

12. An electronic device, characterized in that it comprises a camera module according to any one of claims 1 to 11.