Camera module and electronic device

Abstract

The application discloses a camera module and an electronic device, and belongs to the technical field of electronic products. The disclosed camera module comprises a camera assembly and a displacement detection device. The camera assembly comprises a base, a lens assembly and a driving mechanism. The lens assembly is movably connected with the base, and the driving mechanism can drive the lens assembly to move relative to the base. The displacement detection device comprises a light guide fiber. A first end of the light guide fiber can be directed towards a light source, and a second end of the light guide fiber is directed towards the lens assembly to detect the displacement of the lens assembly.

Description

Technical Field

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

[0002] With the rapid development of the electronic equipment industry, people's requirements for the shooting functions of electronic devices are constantly increasing. To pursue a better shooting experience, the camera modules of electronic devices need to have good anti-shake capabilities. The main displacement detection device used in camera modules is the Hall effect sensor. The Hall effect sensor detects the magnetic field generated by the magnet to determine the position of the lens and lens carrier. The moving magnet design then drives the lens and lens carrier to perform anti-shake compensation movement. In recent years, some electronic devices have also adopted shape memory alloy resistance feedback to detect displacement, or used capacitive displacement sensing to sense displacement.

[0003] The Hall effect sensor, which detects the magnetic field generated by a magnet to determine the position of the lens and motor carrier, is susceptible to interference from other magnetic components, leading to inaccurate position measurement. The displacement detection method using shape memory alloy resistor feedback suffers from low displacement sensing accuracy and numerous interference factors. The main issues with capacitive displacement sensing are low accuracy, large fluctuations, and susceptibility to vibrations in other directions. Therefore, all displacement detection devices used in camera modules suffer from low displacement detection accuracy.

[0004] In summary, the displacement detection device of the camera module involved in the related art has the problem of low displacement detection accuracy. Summary of the Invention

[0005] The purpose of the embodiments of the present application is to provide a camera module and an electronic device that can solve the problem of low displacement detection accuracy of the displacement detection device of the camera module involved in the related art.

[0006] The embodiment of the present application provides a camera module, including a camera assembly and a displacement detection device,

[0007] The camera assembly includes a base, a lens assembly and a driving mechanism, wherein the lens assembly is movably connected to the base, and the driving mechanism can drive the lens assembly to move relative to the base;

[0008] The displacement detection device includes a light-guiding optical fiber, a first end of the light-guiding optical fiber can be directed toward the light source, and a second end of the light-guiding optical fiber is directed toward the lens assembly to detect the displacement of the lens assembly.

[0009] An embodiment of the present application provides an electronic device, comprising a housing and the camera module described above, wherein the camera module is disposed in the housing.

[0010] In the embodiment of the present application, the light emitted by the light source is emitted through the light-guiding optical fiber and reflected by the lens assembly to the light-guiding optical fiber. This setting method is used to detect the displacement of the lens assembly, and the lens assembly is driven to move relative to the base through the driving mechanism to compensate for the displacement of the lens assembly, thereby realizing the anti-shake function and focusing function of the camera assembly. In addition, the method of realizing displacement detection through the light-guiding optical fiber in the present application is not easily affected by interference from magnetic fields and other factors, so the displacement detection accuracy of the displacement detection device is relatively high. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the configuration structure of the first camera assembly, the second camera assembly, and the light-guiding optical fiber disclosed in an embodiment of the present application;

[0012] Figure 2 This is a schematic cross-sectional view of the light guide fiber and mainboard bracket disclosed in the embodiment of the present application;

[0013] Figure 3 This is a schematic structural diagram of the light-guiding optical fiber and mainboard bracket disclosed in an embodiment of the present application;

[0014] Figure 4 for Figure 3 A schematic cross-sectional view of a partial structure of FIG.

[0015] Figure 5 for Figure 3 Schematic diagram of the local structure;

[0016] Figure 6 for Figure 3 Schematic diagram of the local structure;

[0017] Figure 7 This is a schematic cross-sectional structural diagram of the camera assembly disclosed in an embodiment of the present application.

[0018] Description of reference numerals:

[0019] 100 - camera assembly, 110 - base, 120 - lens assembly, 121 - lens carrier, 122 - lens, 130 - driving mechanism, 131 - driving coil, 132 - driving magnet, 140 - first camera assembly, 150 - second camera assembly;

[0020] 200-light-guiding optical fiber, 210-first optical fiber, 220-second optical fiber, 230-third optical fiber, 240-incident optical fiber, 241-incident optical fiber core, 242-first cladding, 250-reflecting optical fiber, 251-reflecting optical fiber core, 252-second cladding, 260-shaping layer, 270-second light-guiding optical fiber, 280-first light-guiding optical fiber;

[0021] 300-mainboard bracket, 310-bracket body, 320-extension part;

[0022] 410-shrapnel, 420-weld point. DETAILED DESCRIPTION

[0023] 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.

[0024] 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 specific 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 that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. 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 connected are in an "or" relationship.

[0025] The camera module disclosed in the embodiment of the present application is described in detail below through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0026] Please refer to Figure 1-Figure 7 The present application discloses a camera module, which includes a camera assembly 100 and a displacement detection device.

[0027] The camera assembly 100 includes a base 110, a lens assembly 120 and a driving mechanism 130. The lens assembly 120 is movably connected to the base 110. The driving mechanism 130 can drive the lens assembly 120 to move relative to the base 110, that is, the driving mechanism 130 can drive the lens assembly 120 to perform anti-shake movement and / or focusing movement relative to the base 110. In other words, the driving mechanism 130 can drive the lens assembly 120 to move and / or rotate relative to the base 110. The driving mechanism 130 can be a component with a driving function such as a motor.

[0028] Optionally, the driving mechanism 130 may include a driving coil 131 and a driving magnet 132, wherein the driving coil 131 is disposed on the lens assembly 120, and the driving magnet 132 is disposed on the base 110. When the driving coil 131 is energized, the driving magnet 132 acts on the driving coil 131 so that the driving coil 131 drives the lens assembly 120 to move relative to the base 110.

[0029] A metal plate may be provided on the base 110 , and the driving coil 131 is connected to the metal plate via a spring 410 . The metal plate is electrically connected to the circuit board of the electronic device via a solder joint 420 provided on the outside of the base 110 , so that the circuit board can supply power to the driving coil 131 .

[0030] The displacement detection device can be arranged outside the camera assembly 100. The displacement detection device includes a light-guiding optical fiber 200. The first end of the light-guiding optical fiber 200 can be directed toward the light source so that the light emitted by the light source can propagate through the light-guiding optical fiber 200. The second end of the light-guiding optical fiber 200 is directed toward the lens assembly 120 to detect the displacement of the lens assembly 120. Specifically, there is a gap between the second end of the light-guiding optical fiber 200 and the lens assembly 120. The light emitted by the light source can be emitted through the light-guiding optical fiber 200 and irradiated to the lens assembly 120. Optionally, it can be irradiated to the outer surface of the lens assembly 120 and reflected from the outer surface of the lens assembly 120 to the light-guiding optical fiber 200. The displacement of the lens assembly 120 can be detected through this setting.

[0031] Optionally, the outer surface of the lens assembly 120 can be set to be relatively smooth so that the outer surface of the lens assembly 120 has a higher reflectivity to light, thereby reflecting more light to the light-guiding optical fiber 200, making it easier to accurately detect the displacement of the lens assembly 120.

[0032] The camera module performs feedback control based on the detected displacement, that is, energizes the drive coil 131 so that the drive coil 131 drives the lens assembly 120 to perform anti-shake compensation movement and / or focusing movement relative to the base 110 under the action of the drive magnet 132.

[0033] In the embodiment of the present application, the light emitted by the light source is emitted through the light-guiding optical fiber 200 and reflected by the lens assembly 120 to the light-guiding optical fiber 200. This setting method is used to detect the displacement of the lens assembly 120, and the driving mechanism 130 is used to drive the lens assembly 120 to move relative to the base 110 to compensate for the displacement of the lens assembly 120, thereby realizing the anti-shake function and focusing function of the camera assembly 100. In addition, the method of realizing displacement detection through the light-guiding optical fiber 200 in the present application is not easily affected by interference from magnetic fields and other factors. Therefore, the displacement detection accuracy of the displacement detection device is relatively high.

[0034] In addition, the present application uses a light-guiding optical fiber 200 for displacement detection. Since the sensing range of the optical fiber is relatively large, the light-guiding optical fiber 200 can be applied to a camera assembly 100 of a larger size.

[0035] Optionally, the number of light-guiding optical fibers 200 can be one, and one light-guiding optical fiber 200 can only detect the displacement of the lens assembly 120 in one direction. Hall sensors, resistive feedback of shape memory alloys, or capacitive displacement sensors can be used to detect displacement in other directions, but this may result in lower displacement detection accuracy in other directions.

[0036] To avoid the above-mentioned problem, in another embodiment, there are at least two light-guiding optical fibers 200, including a first optical fiber 210 and a second optical fiber 220. The second end of the first optical fiber 210 is oriented differently from the second end of the second optical fiber 220, i.e., the second ends of the first optical fiber 210 and the second ends of the second optical fiber 220 are oriented toward different positions of the lens assembly 120. The first optical fiber 210 is used to detect displacement of the lens assembly 120 in a first direction, and the second optical fiber 220 is used to detect displacement of the lens assembly 120 in a second direction. The first and second directions intersect. This arrangement allows detection of displacement of the lens assembly 120 in different directions, thereby more accurately determining the position of the lens assembly 120 within the base 110. The drive mechanism 130 can then compensate for this displacement, thereby improving at least one of the anti-shake and focus effects of the lens assembly 120. Optionally, the first and second directions may be perpendicular to each other.

[0037] In a further embodiment, in order to further enhance at least one of the anti-shake effect and the focusing effect of the lens assembly 120, the lens assembly 120 includes a lens carrier 121 and a lens 122. The lens 122 is arranged on the lens carrier 121. The lens carrier 121 is used to carry the lens 122. The lens 122 is used to realize the shooting function of the camera module. The lens carrier 121 is arranged in the base 110. The driving mechanism 130 is connected to the lens carrier 121. The at least two light-guiding optical fibers 200 also include a third optical fiber 230. The first optical fiber 210 and the second optical fiber 220 are both facing the lens 122, that is, the first optical fiber 210 and the second optical fiber 220 are used to detect the displacement of the lens 122 in different directions. The third optical fiber 230 is facing the lens carrier 121. The third optical fiber 230 is used to detect the displacement of the lens carrier 121 in a third direction, and the third direction intersects with the first direction and the second direction.

[0038] It can be seen from this that the lens assembly 120 uses more optical fibers for displacement detection, so that the lens assembly 120 can more clearly determine its position in the base 110, and compensate for the displacement through the driving mechanism 130 to further enhance at least one of the anti-shake effect and the focusing effect of the lens assembly 120.

[0039] Optionally, the first direction, the second direction, and the third direction each form an obtuse angle or an acute angle, or the first direction, the second direction, and the third direction each form a perpendicular angle to each other, wherein the first direction and the second direction are perpendicular to the optical axis of the lens 122, that is, the displacement detected by the first optical fiber 210 and the second optical fiber 220 is used for anti-shake compensation movement of the lens 122, and the third direction is parallel to the optical axis of the lens 122, that is, the displacement detected by the third optical fiber 230 is used for focusing movement of the lens 122. Such an arrangement facilitates the control of the camera module. Optionally, the base 110 can be provided with an avoidance notch to allow the third optical fiber 230 to pass through the avoidance notch toward the lens carrier 121.

[0040] Optionally, the camera module further includes a light source and a light intensity detection device. The light-guiding optical fiber 200 includes an incident optical fiber 240 and a reflecting optical fiber 250. The first end of the incident optical fiber 240 of each light-guiding optical fiber 200 can be opposite to a different light source, that is, a large number of light sources are used. The second end of the incident optical fiber 240 of each light-guiding optical fiber 200 is respectively arranged opposite to the lens assembly 120. The first end of the reflecting optical fiber 250 of each light-guiding optical fiber 200 is oriented in the same direction as the second end of the incident optical fiber 240 of each light-guiding optical fiber 200. The second end of the reflecting optical fiber 250 of each light-guiding optical fiber 200 can be oriented toward different light intensity detection devices, that is, a large number of light intensity detection devices are used. The light intensity detection device is used to detect the reflected light intensity value of the reflecting optical fiber 250, and the electronic device calculates the displacement of the lens assembly 120 based on the reflected light intensity value. In this embodiment, since the number of light sources and the number of light intensity detection devices used are both large, the light source and the light intensity detection device occupy a large amount of space in the camera module, and thus occupy a large amount of space in the electronic device, which is not conducive to the arrangement of other components of the electronic device.

[0041] To avoid the above problems, in another embodiment, the first end of the incident optical fiber 240 of each light-guiding optical fiber 200 is opposite to the light source, that is, opposite to the same light source, and the second end of the reflecting optical fiber 250 of each light-guiding optical fiber 200 is facing the light intensity detection device, that is, facing the same light intensity detection device. As a result, each light-guiding optical fiber 200 can share the light source and the light intensity detection device, thereby making the light source and the light intensity detection device occupy less space in the camera module, and thus occupying less space in the electronic device, which is beneficial to the arrangement of other components of the electronic device.

[0042] Optionally, a gap may be provided between the light source and the first end of the incident optical fiber 240 of each light-guiding optical fiber 200, or they may be in direct contact; a gap may be provided between the light intensity detection device and the second end of the reflecting optical fiber 250 of each light-guiding optical fiber 200, or they may be in direct contact.

[0043] Alternatively, the light source can be an existing light source within the electronic device. However, since the light guide fiber 200 requires fewer light sources, using an existing light source within the electronic device consumes more power. In another embodiment, the light source is an LED chip installed in the electronic device. Due to the small size of LED chips, they occupy less space in the electronic device. Alternatively, the light intensity detection device can be an illuminometer chip. The smaller size of an illuminometer chip reduces the space required by the electronic device.

[0044] Optionally, the incident optical fiber 240 includes an incident optical fiber core 241 and a first cladding 242, and the reflecting optical fiber 250 includes a reflecting optical fiber core 251 and a second cladding 252. The first cladding 242 is arranged around the incident optical fiber core 241, and the second cladding 252 is arranged around the reflecting optical fiber core 251. The incident optical fiber core 241 and the reflecting optical fiber core 251 both have a higher refractive index, and the first cladding 242 and the second cladding 252 have a lower refractive index. The main function of the first cladding 242 is to form an optical waveguide together with the incident optical fiber core 241, that is, a medium device that guides the light waves emitted by the light source to propagate therein. The main function of the second cladding 252 is to form an optical waveguide together with the reflecting optical fiber core 251, that is, a medium device that guides the light waves reflected by the lens assembly 120 to propagate therein. The secondary function of the first cladding 242 and the second cladding 252 is to protect the incident optical fiber core 241 and the reflecting optical fiber core 251.

[0045] Optionally, the type of light-guiding optical fiber 200 used in the present application can be a gradient optical fiber. However, when using a gradient optical fiber, it is necessary to calculate the displacement of the lens assembly 120 based on the reflected light intensity value of the reflecting optical fiber 250 at the detection point and through simulation software, and the process is relatively complicated.

[0046] Therefore, in another embodiment, the type of the light guide fiber 200 is a step-index fiber. In this case, the detected reflected light intensity value I of the reflecting optical fiber 250 can be calculated using the following formula. This process is relatively simple and quick. Specifically, the reflected light intensity value I and the displacement x of the lens assembly 120 satisfy the following relationship:

[0047]

[0048] Where R represents the reflectivity of the lens assembly 120, S represents the core area of ​​the incident fiber core 241 or the reflecting fiber core 251, I0 represents the incident light intensity value irradiated by the incident fiber 240 onto the lens assembly 120, that is, the luminous flux per unit area, and ω satisfies the following relationship: ω(x)=σa0[1+ε( / 0) 3 / ], where σ represents the refractive index distribution parameter of the light-guiding optical fiber 200, and for a step-index optical fiber, σ=1, a0 represents the core radius of the incident optical fiber core 241 or the reflection optical fiber core 251, r represents the center-to-center distance between the incident optical fiber core 241 and the reflection optical fiber core 251, and ε represents the coupling parameter between the light source and the incident optical fiber 240, which is related to the light source type, coupling efficiency, and wavelength of the incident light.

[0049] Optionally, since the light guide fiber 200 is generally soft, the end of the light guide fiber 200 facing the lens assembly 120 may be prone to tilting when the light guide fiber 200 is in use, which may affect the accuracy of the light guide fiber 200 in detecting displacement. Therefore, the light guide fiber 200 also includes a shaping layer 260. The shaping layer 260 surrounds the incident optical fiber 240 and the reflection optical fiber 250, and the incident optical fiber 240 and the reflection optical fiber 250 are spaced apart by the shaping layer 260. That is, the shaping layer 260 positions and shapes the incident optical fiber 240 and the reflection optical fiber 250, and ensures that the incident optical fiber 240 and the reflection optical fiber 250 cannot bend, thereby making it easier for the incident optical fiber 240 and the reflection optical fiber 250 to conduct light waves, thereby achieving higher detection accuracy when the light guide fiber 200 detects the displacement of the lens assembly 120.

[0050] Optionally, the shaping layer 260 is an injection molding layer, and the material used may be hard plastic, for example, the material of the shaping layer 260 may be E525T.

[0051] Optionally, the number of camera assemblies 100 is at least two, and the at least two camera assemblies 100 include a first camera assembly 140 and a second camera assembly 150. The number of light-guiding optical fibers 200 is at least two, and the at least two light-guiding optical fibers 200 include a first light-guiding optical fiber 280 and a second light-guiding optical fiber 270. The first end of the first light-guiding optical fiber 280 and the first end of the second light-guiding optical fiber 270 can face different light sources, that is, the first light-guiding optical fiber 280 and the second light-guiding optical fiber 270 are illuminated by different light sources, the second end of the first light-guiding optical fiber 280 faces the lens assembly of the first camera assembly 140, and the second end of the second light-guiding optical fiber 270 faces the lens assembly of the second camera assembly 150, that is, the first light-guiding optical fiber 280 is used to detect the displacement of the lens assembly of the first camera assembly 140, and the second light-guiding optical fiber 270 is used to detect the displacement of the lens assembly of the second camera assembly 150. It can be seen that the light-guiding optical fiber 200 can simultaneously detect the displacement of the lens assemblies of more camera assemblies 100, which makes the use range of the light-guiding optical fiber 200 wider. In this embodiment, since the first light-guiding optical fiber 280 and the second light-guiding optical fiber 270 are illuminated by different light sources, this means that the camera module uses a large number of light sources, which has a greater impact on the space of the electronic device.

[0052] Therefore, in another embodiment, the first end of the first light-guiding optical fiber 280 and the first end of the second light-guiding optical fiber 270 are both directed toward the light source, that is, toward the same light source, so as to maximize the utilization of the light source. This arrangement can avoid occupying more space of electronic equipment.

[0053] Alternatively, the second camera assembly 150 may be an open-loop focus motor, with the second end of the second light-guiding fiber 270 directed toward the lens assembly of the second camera assembly 150, and the direction of the second end of the second light-guiding fiber 270 being parallel to the optical axis of the lens assembly. In this case, the drive mechanism detects the displacement of the lens assembly to drive the lens assembly for focusing. This arrangement allows the open-loop focus motor to achieve the same effect as a closed-loop focus motor, i.e., achieve faster focusing speeds.

[0054] Optionally, when the present application performs displacement detection via the light-guiding optical fiber 200, there is no need to configure complex wiring, Hall effect chips, Hall effect magnets, or additional circuit boards. This reduces the size of the lens carrier 121, greatly simplifying the structural design of the camera module, which facilitates the installation of other components in the electronic device. Optionally, the dimension of the lens carrier 121 in a direction perpendicular to the optical axis of the lens 122 can be 0.2 mm.

[0055] Optionally, the present application also discloses an electronic device, comprising a housing and the camera module described above, wherein the camera module is arranged in the housing.

[0056] Alternatively, the light guide fiber 200 can be positioned directly within the space between the camera module and the housing. In another embodiment, the housing includes a motherboard bracket 300, which is used to fill the space around the camera module. The light guide fiber 200 is embedded within the motherboard bracket 300. This allows the light guide fiber 200 to be fully utilized within the existing motherboard bracket 300 of the electronic device. The motherboard bracket 300 protects the light guide fiber 200 while also enhancing the structural strength of the entire displacement detection device.

[0057] Optionally, the motherboard bracket 300 includes a bracket body 310 and an extension portion 320 proximate to the lens assembly 120. Specifically, the extension portion 320 protrudes toward the lens assembly 120. A portion of the light guide fiber 200 is embedded in the bracket body 310, and another portion is embedded in the extension portion 320. The extension portion 320 is relatively close to the lens assembly 120, thereby allowing the end of the light guide fiber 200 facing the lens assembly 120 to be closer to the lens assembly 120. This allows more light reflected from the lens assembly 120 to enter the light guide fiber 200, thereby improving displacement detection accuracy.

[0058] The second end of the light-guiding optical fiber 200 facing the lens assembly 120 may be disposed in the extension portion 320 . However, in this case, it is difficult to adjust the detection direction of the light-guiding optical fiber 200 , and thus it is difficult to ensure the displacement detection accuracy.

[0059] Therefore, in another embodiment, one end of the light-guiding optical fiber 200 extends toward the lens assembly 120 relative to the extension portion 320, that is, the second end of the light-guiding optical fiber 200 facing the lens assembly 120 is arranged outside the extension portion 320. Through this arrangement, the position of the second end of the light-guiding optical fiber 200, that is, the detection direction of the light-guiding optical fiber 200, can be more easily adjusted, thereby making it easier to ensure the accuracy of displacement detection.

[0060] 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: It includes a camera assembly (100) and a displacement detection device, The camera assembly (100) comprises a base (110), a lens assembly (120), and a driving mechanism (130), wherein the lens assembly (120) is movably connected to the base (110), and the driving mechanism (130) can drive the lens assembly (120) to move relative to the base (110); The displacement detection device comprises a light-guiding optical fiber (200), wherein a first end of the light-guiding optical fiber (200) can face a light source, and a second end of the light-guiding optical fiber (200) faces the lens assembly (120), and a gap is provided between the second end of the light-guiding optical fiber (200) and the lens assembly (120). Light emitted by the light source is irradiated onto the lens assembly (120) via the light-guiding optical fiber (200), and the lens assembly (120) reflects the light onto the light-guiding optical fiber (200) to detect the displacement of the lens assembly (120).

2. The camera module according to claim 1, wherein: The number of the light-guiding optical fibers (200) is at least two, and the at least two light-guiding optical fibers (200) include a first optical fiber (210) and a second optical fiber (220). The orientation of the second end of the first optical fiber (210) is different from the orientation of the second end of the second optical fiber (220). The first optical fiber (210) is used to detect the displacement of the lens assembly (120) in a first direction, and the second optical fiber (220) is used to detect the displacement of the lens assembly (120) in a second direction. The first direction and the second direction intersect.

3. The camera module according to claim 2, wherein: The lens assembly (120) comprises a lens carrier (121) and a lens (122), wherein the lens carrier (121) is arranged in the base (110), the driving mechanism (130) is connected to the lens carrier (121), and the lens (122) is arranged in the lens carrier (121). The at least two light-guiding optical fibers (200) further include a third optical fiber (230), wherein the first optical fiber (210) and the second optical fiber (220) are both directed toward the lens (122), and the third optical fiber (230) is directed toward the lens carrier (121), and the third optical fiber (230) is used to detect displacement of the lens carrier (121) in a third direction, wherein the third direction intersects with the first direction and the second direction.

4. The camera module according to claim 3, wherein: The first direction, the second direction and the third direction are perpendicular to each other.

5. The camera module according to claim 2, wherein: The camera module further comprises the light source and the light intensity detection device, the light-guiding optical fiber (200) comprises an incident optical fiber (240) and a reflecting optical fiber (250), the first end of the incident optical fiber (240) of each light-guiding optical fiber (200) is opposite to the light source, the second end of the incident optical fiber (240) of each light-guiding optical fiber (200) is respectively arranged opposite to the lens assembly (120), the first end of the reflecting optical fiber (250) of each light-guiding optical fiber (200) is oriented in the same direction as the second end of the incident optical fiber (240) of each light-guiding optical fiber (200), the second end of the reflecting optical fiber (250) of each light-guiding optical fiber (200) is oriented toward the light intensity detection device, and the light intensity detection device is used to detect the reflected light intensity value of the reflecting optical fiber (250).

6. The camera module according to claim 5, wherein: The light-guiding optical fiber (200) further comprises a shaping layer (260), wherein the shaping layer (260) surrounds the incident optical fiber (240) and the reflecting optical fiber (250), and the incident optical fiber (240) and the reflecting optical fiber (250) are spaced apart by the shaping layer (260).

7. The camera module according to claim 1, wherein: The number of the camera assemblies (100) is at least two, and the at least two camera assemblies (100) include a first camera assembly (140) and a second camera assembly (150). The number of the light-guiding optical fibers (200) is at least two, and the at least two light-guiding optical fibers (200) include a first light-guiding optical fiber (280) and a second light-guiding optical fiber (270). The first end of the first light-guiding optical fiber (280) and the first end of the second light-guiding optical fiber (270) are both directed toward the light source, the second end of the first light-guiding optical fiber (280) is directed toward the lens assembly of the first camera assembly (140), and the second end of the second light-guiding optical fiber (270) is directed toward the lens assembly of the second camera assembly (150).

8. An electronic device, characterized in that: It comprises a shell and the camera module according to any one of claims 1 to 7, wherein the camera module is arranged in the shell.

9. The electronic device according to claim 8, wherein: The housing comprises a mainboard bracket (300), and the light-guiding optical fiber (200) is embedded in the mainboard bracket (300).

10. The electronic device according to claim 9, characterized in that The mainboard bracket (300) comprises a bracket body (310) and an extension portion (320) close to the lens assembly (120); a portion of the light-guiding optical fiber (200) is embedded in the bracket body (310), and another portion is embedded in the extension portion (320).

11. The electronic device according to claim 10, characterized in that One end of the light-guiding optical fiber (200) extends toward the lens assembly (120) relative to the extension portion (320).

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