Camera module and electronic equipment

Abstract

The invention discloses a camera module and electronic equipment. The disclosed camera module comprises a shell (100), a lens (200), a buffer mechanism (300) and a driving mechanism (400), the lens (200) is movably arranged on the shell (100), the buffer mechanism (300) and the driving mechanism (400) are both arranged on the shell (100), the buffer mechanism (300) and the driving mechanism (400) are respectively connected with the lens (200), and the driving mechanism (400) is used for driving the lens (200) to move along the optical axis direction of the lens (200) so as to perform focusing. The buffer mechanism (300) is used for adjusting the resistance borne by the lens (200) when the lens (200) moves in the optical axis direction through mutual cooperation with the lens (200). According to the scheme, the problem that in a camera module related to the related technology, the lens is difficult to stably move in the direction of the optical axis and is difficult to stably focus can be solved.

Description

Technical Field

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

[0002] With the development of science and technology, the functions of electronic devices are becoming more and more abundant. Electronic devices usually have a camera module to meet the shooting needs of users. The lens in the camera module is usually movably arranged in the housing of the camera module, and the driving mechanism of the camera module drives the lens to move along the optical axis of the lens to achieve the focusing function. In actual use, users usually shoot in different directions, which makes the lens encounter different resistances when focusing, so that when the lens is driven to focus, it is difficult for the lens to move more stably along the optical axis, and it is difficult to focus more stably. Summary of the invention

[0003] The invention discloses a camera module and an electronic device to alleviate the problem that the camera module involved in the related art has a lens that is difficult to stably move along the optical axis and is difficult to focus stably.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: In a first aspect, the present application discloses a camera module, the disclosed camera module includes a housing, a lens, a buffer mechanism and a driving mechanism; The lens is movably disposed on the housing, the buffer mechanism and the driving mechanism are both disposed on the housing, and the buffer mechanism and the driving mechanism are respectively connected to the lens, the driving mechanism is used to drive the lens to move along the optical axis direction of the lens for focusing, and the buffer mechanism is used to adjust the resistance encountered by the lens when moving along the optical axis direction by cooperating with the lens.

[0005] In a second aspect, the present application discloses an electronic device, which includes a housing and the camera module described above, wherein the camera module is disposed in the housing.

[0006] The technical solution adopted by the present invention can achieve the following technical effects: The camera module disclosed in the embodiment of the present application improves the structure of the camera module involved in the related art by providing a buffer mechanism, and by arranging the buffer mechanism in a shell and connecting the buffer mechanism to the lens. Thus, the resistance encountered by the lens when moving along the optical axis can be adjusted through the cooperation between the buffer mechanism and the lens. Thus, the resistance encountered by the lens when moving along the optical axis can be buffered by adjusting the resistance encountered by the lens when moving along the optical axis, so that the lens can move more stably along the optical axis, and further the lens can focus more stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 is a schematic diagram of the structure of the camera module disclosed in the embodiment of the present application; Figure 2 It is a partial structural schematic diagram of the camera module disclosed in the embodiment of the present application; Figure 3 It is another partial structural schematic diagram of the camera module disclosed in the embodiment of the present application.

[0008] Description of reference numerals: 100-shell, 200-lens, 300-buffer mechanism, 310-first buffer part, 311-first coil, 312-first magnetic member, 320-second buffer part, 321-second coil, 322-second magnetic member, 330-third buffer part, 331-third coil, 332-third magnetic member, 400-driving mechanism, 410-fourth coil, 420-fourth magnetic member, 500- rolling element, 600-Detector, 700-Controller, 800-Photosensitive chip. DETAILED DESCRIPTION

[0009] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0010] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0011] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0012] Please refer to Figures 1 to 3 The embodiment of the present application discloses a camera module, which includes a housing 100, a lens 200, a buffer mechanism 300 and a driving mechanism 400.

[0013] The housing 100 is a basic component of the camera module, and is used to provide a mounting position for other components of the camera module, wherein the lens 200, the buffer mechanism 300 and the drive mechanism 400 are all arranged in the housing 100. In addition, the housing 100 is also used to form some functional spaces or structures.

[0014] The lens 200 is movably disposed on the housing 100 so as to be able to move relative to the housing 100, thereby enabling focusing. The buffer mechanism 300 and the drive mechanism 400 are both disposed on the housing 100, and the buffer mechanism 300 and the drive mechanism 400 are respectively connected to the lens 200, and the drive mechanism 400 is used to drive the lens 200 to move along the optical axis direction of the lens 200 for focusing, thereby achieving a focusing function. The buffer mechanism 300 is used to adjust the resistance of the lens 200 moving along the optical axis direction by cooperating with the lens 200, so as to increase the resistance of the lens 200 moving along the optical axis direction, so that the lens 200 can move along the optical axis direction more stably.

[0015] In the specific use process, the user can shoot in different directions, so when the lens 200 moves along the optical axis, the gravity direction of the lens 200 has different tilt angles relative to the moving direction of the lens 200, so that the influence of gravity on the lens 200 moving along the optical axis and the influence of the friction force of the housing 100 on the lens 200 moving along the optical axis are different. It should be noted that as the tilt angle decreases, the obstruction force generated by the influence of gravity on the lens 200 moving along the optical axis decreases.

[0016] In the camera module involved in the related technology, as the tilt angle decreases, the obstruction force caused by the influence of gravity on the lens 200 moving along the optical axis direction decreases, so that the resistance encountered by the lens 200 moving along the optical axis direction is smaller. This enables the driving mechanism 400 to drive the lens 200 to move along the optical axis direction so that the lens 200 reaches the focusing position. It is easy for the lens 200 to continue to move along the optical axis direction after reaching the focusing position, which may cause the lens 200 to collide with the housing 100 and produce abnormal noise.

[0017] In the embodiment of the present application, adjustment can be achieved by increasing the resistance encountered by the lens 200 when moving along the optical axis through the cooperation between the buffer mechanism 300 and the lens 200, so that buffering can be performed by adjusting the resistance encountered by the lens 200 when moving along the optical axis. In the specific adjustment process, the resistance encountered by the lens 200 when moving along the optical axis can increase as the tilt angle decreases, so that better buffering can be performed.

[0018] The camera module disclosed in the embodiment of the present application improves the structure of the camera module involved in the related art by providing a buffer mechanism 300, arranging the buffer mechanism 300 on the housing 100, and connecting the buffer mechanism 300 with the lens 200, so that the resistance encountered by the lens 200 when moving along the optical axis can be adjusted through the cooperation between the buffer mechanism 300 and the lens 200, so that the resistance encountered by the lens 200 when moving along the optical axis can be buffered by adjusting the resistance encountered by the lens 200 when moving along the optical axis, so that the lens 200 can move more stably along the optical axis, and further the lens 200 can focus more stably.

[0019] In addition, the buffer mechanism 300 adjusts the resistance encountered by the lens 200 when moving along the optical axis by cooperating with the lens 200, which enables the lens 200 to move relatively stably along the optical axis, so that the lens 200 can reach the focusing position relatively stably, thereby minimizing the problem that the lens 200 continues to move along the optical axis after reaching the focusing position, which would cause the lens 200 to easily collide with the housing 100 and produce abnormal noise, thereby helping to improve user experience.

[0020] Of course, the user will move around when using the electronic device, which causes the lens 200 to shake easily with the user's activities, so that the lens 200 may collide with the housing 100 and produce abnormal noise. In the case where the camera module also includes the detector 600 and the controller 700 described later, when the lens 200 shakes, the detector 600 can detect the angle between the actual moving direction of the lens 200 and the gravity direction, and the controller 700 can adjust the resistance according to the angle, so that the resistance of the lens 200 moving along the optical axis can be adjusted when the lens 200 shakes, so as to better buffer and prevent the lens 200 from shaking easily with the user's activities and hitting the housing 100, which is easy to produce abnormal noise.

[0021] In one embodiment, the driving mechanism 400 may include a fourth coil 410 and a fourth magnetic member 420, the fourth coil 410 may be fixedly connected to the housing 100, and the fourth magnetic member 420 may be fixedly connected to the lens 200, so that the driving mechanism 400 can drive the lens 200 to move through the cooperation between the fourth coil 410 and the fourth magnetic member 420. Specifically, the fourth magnetic member 420 may be an aluminum-nickel alloy or a ferrite, which is not limited in the embodiment of the present application.

[0022] In a further technical solution, the buffer mechanism 300 may include a first buffer portion 310, the first buffer portion 310 may include a first coil 311 and a first magnetic member 312, the first coil 311 may be provided on the housing 100, so that the first coil 311 can be fixed to the housing 100 to facilitate electrical connection of the first coil 311, and the first magnetic member 312 may be provided on the lens 200. Specifically, the first magnetic member 312 may be an aluminum-nickel alloy or a ferrite, which is not limited in the embodiment of the present application.

[0023] The first coil 311 can be used to generate a first magnetic force with the first magnetic member 312, and the pressure between the lens 200 and the housing 100 in a direction perpendicular to the optical axis can be adjusted by the first magnetic force, so that the friction force of the housing 100 on the lens 200 when it moves along the optical axis can be adjusted, wherein the resistance may include friction. This structure realizes electromagnetic drive through the mutual cooperation between the first coil 311 and the first magnetic member 312, and can more efficiently adjust the pressure between the lens 200 and the housing 100 in a direction perpendicular to the optical axis, and can avoid direct contact between the first coil 311 and the first magnetic member 312, thereby reducing the wear between the first coil 311 and the first magnetic member 312, which is conducive to extending the service life.

[0024] Specifically, Figure 3 As shown, the first magnetic force may be a magnetic repulsion force, Figure 3The direction indicated by the middle arrow is the direction of the first magnetic force. Of course, the first magnetic force may also be a magnetic attraction force, and the embodiment of the present application does not limit this.

[0025] In the specific working process, the adjustment can be made by increasing the pressure between the lens 200 and the housing 100 in the direction perpendicular to the optical axis, thereby increasing the friction between the lens 200 and the housing 100 during the movement along the optical axis, so as to increase the friction of the lens 200 with the housing 100 when the lens 200 moves along the optical axis.

[0026] During the specific adjustment process, the pressure between the lens 200 and the housing 100 in the direction perpendicular to the optical axis can increase as the tilt angle decreases, so that the friction between the lens 200 and the housing 100 during the movement along the optical axis can increase as the tilt angle decreases, thereby making it possible to increase the friction force of the lens 200 with the housing 100 when the lens 200 moves along the optical axis as the tilt angle decreases, so as to provide better buffering.

[0027] In an optional technical solution, the camera module may further include a rolling body 500, which may be disposed between the lens 200 and the housing 100. The lens 200 may be moved along the optical axis by rolling the rolling body 500, so that the wear between the lens 200 and the housing 100 may be reduced by rolling contact between the rolling body 500 and the housing 100 and the lens 200, thereby facilitating the extension of the service life of the housing 100 and the lens 200. Specifically, the rolling body 500 may be a ball or a needle, which is not limited in the embodiment of the present application. Of course, in order to improve the uniformity of stress distribution, there may be a plurality of rolling bodies 500, and the plurality of rolling bodies may be distributed around the lens 200 at intervals.

[0028] In the embodiment of the present application, the buffer mechanism 300 may include at least one of a second buffer portion 320 and a third buffer portion 330. The second buffer portion 320 may include a second coil 321 and a second magnetic member 322. The third buffer portion 330 may include a third coil 331 and a third magnetic member 332. Specifically, the second magnetic member 322 and the third magnetic member 332 may both be aluminum-nickel alloy or ferrite, which is not limited in the embodiment of the present application.

[0029] The second coil 321 can be arranged on the housing 100, so that the second coil 321 can be fixed to the housing 100 to facilitate the installation of the second coil 321 and avoid the wind problem that the second coil 321 moves and easily leads to poor contact. The second magnetic member 322 can be arranged on the lens 200, and the second coil 321 can be used to generate a second magnetic force with the second magnetic member 322, and the resistance can include the second magnetic force. That is to say, in this case, the second magnetic force can act on the lens 200 along the optical axis direction to adjust the resistance encountered by the lens 200 moving along the optical axis direction, so that the resistance encountered by the lens 200 moving along the optical axis direction can be adjusted more directly, so as to be able to buffer more efficiently.

[0030] The third coil 331 can be arranged on the housing 100, so that the third coil 331 can be fixed to the housing 100, so as to facilitate the installation of the third coil 331 and avoid the wind problem that the third coil 331 moves and easily leads to poor contact. The third magnetic member 332 can be arranged on the lens 200, and the third coil 331 can be used to generate a third magnetic force with the third magnetic member 332, and the resistance can include the third magnetic force. That is to say, in this case, the third magnetic force can act on the lens 200 along the optical axis direction to adjust the resistance encountered by the lens 200 moving along the optical axis direction, so as to be able to more directly adjust the resistance encountered by the lens 200 moving along the optical axis direction, so as to be able to buffer more efficiently.

[0031] Specifically, one of the second magnetic force and the third magnetic force may be a magnetic attraction force, and the other may be a magnetic repulsion force. In the specific adjustment process, the second magnetic force and the third magnetic force can respectively increase the resistance encountered by the lens 200 moving along the optical axis direction to achieve buffering.

[0032] As described above, in this structure, electromagnetic drive is achieved through the mutual cooperation between the second magnetic member 322 and the second coil 321 or between the third magnetic member 332 and the third coil 331, thereby adjusting the resistance encountered by the lens 200 when moving along the optical axis, which is beneficial to improving the driving efficiency and reducing the driving noise.

[0033] In one embodiment, the second coil 321 and the second magnetic member 322 can be distributed along the optical axis to facilitate the coordination between the second coil 321 and the second magnetic member 322 . The driving member 400 can drive the lens 200 to move along the optical axis to drive the second magnetic member 322 to move closer to or away from the second coil 321 .

[0034] In a specific working process, when the lens 200 is away from the photosensitive chip 800 of the camera module and drives the second magnetic part 322 to approach the second coil 321, the second magnetic force can be a magnetic repulsion force, so as to prevent the second magnetic part 322 and the second coil 321 from continuing to approach each other through the magnetic repulsion force, thereby increasing the resistance encountered by the lens 200 when moving along the optical axis, thereby achieving buffering.

[0035] When the lens 200 approaches the photosensitive chip 800 and drives the second magnetic component 322 away from the second coil 321, the second magnetic force can be a magnetic attraction force, which prevents the second magnetic component 322 and the second coil 321 from continuing to move away from each other, thereby increasing the resistance encountered by the lens 200 when moving along the optical axis, thereby achieving buffering.

[0036] Of course, the second magnetic force may increase as the tilt angle decreases, so that the resistance encountered by the lens 200 when moving along the optical axis direction may increase as the tilt angle decreases.

[0037] This structure uses the second buffer portion 320, so that when the lens 200 moves along the optical axis to drive the second magnetic member 322 to approach or move away from the second coil 321, the resistance encountered by the lens 200 moving along the optical axis can be increased by switching the second magnetic force between magnetic attraction and magnetic repulsion, thereby achieving buffering, so that the second buffer portion 320 can be more fully utilized.

[0038] In another embodiment, the third coil 331 and the third magnetic member 332 may be distributed along the optical axis to facilitate the coordination between the third coil 331 and the third magnetic member 332 , and the lens 200 may drive the third magnetic member 332 to approach or move away from the third coil 331 by moving along the optical axis.

[0039] In the specific working process, when the lens 200 is close to the photosensitive chip 800 of the camera module and drives the third magnetic part 332 to be close to the third coil 331, the third magnetic force can be a magnetic repulsion force, so as to prevent the third coil 331 and the third magnetic part 332 from continuing to approach each other through the magnetic repulsion force, thereby increasing the resistance encountered by the lens 200 moving along the optical axis direction to achieve buffering.

[0040] When the lens 200 moves away from the photosensitive chip 800 and drives the third magnetic component 332 away from the third coil 331, the third magnetic force can be a magnetic attraction force, which prevents the third coil 331 and the third magnetic component 332 from moving further away from each other, thereby increasing the resistance encountered by the lens 200 when moving along the optical axis to achieve buffering.

[0041] Of course, the third magnetic force may increase as the tilt angle decreases, so that the resistance encountered by the lens 200 when moving along the optical axis direction may increase as the tilt angle decreases.

[0042] This structure uses the third buffer portion 330, so that when the lens 200 moves along the optical axis and drives the third magnetic part 332 to approach or move away from the third coil 331, the resistance encountered by the lens 200 moving along the optical axis can be increased by switching the third magnetic force between magnetic attraction and magnetic repulsion, thereby achieving buffering, so that the third buffer portion 330 can be more fully utilized.

[0043] In a feasible technical solution, the second buffer portion 320 and the third buffer portion 330 can be distributed on both sides of the lens 200 along the optical axis direction, so that the lens 200 can move along the optical axis direction to drive the second magnetic component 322 close to the second coil 321 while driving the third magnetic component 332 away from the third coil 331, and the lens 200 can move along the optical axis direction to drive the second magnetic component 322 away from the second coil 321 while driving the third magnetic component 332 close to the third coil 331.

[0044] In a specific working process, when the lens 200 is away from the photosensitive chip 800 of the camera module and drives the second magnetic part 322 to approach the second coil 321, and drives the third magnetic part 332 to move away from the third coil 331, the second magnetic force can be a magnetic repulsion force, and the third magnetic force can be a magnetic attraction force. This structure prevents the second magnetic part 322 and the second coil 321 from continuing to approach each other through the second magnetic force, and prevents the third coil 331 and the third magnetic part 332 from continuing to move away from each other through the third magnetic force, so as to increase the resistance encountered by the lens 200 moving along the optical axis direction, so that when one of the second buffer part 320 and the third buffer part 330 fails, the other can still work normally, thereby improving the reliability of the buffer mechanism 300, so as to be able to perform buffering more stably.

[0045] Of course, when the lens 200 is away from the photosensitive chip 800 of the camera module and drives the second magnetic member 322 to approach the second coil 321, and drives the third magnetic member 332 to move away from the third coil 331, the second magnetic force can be a magnetic repulsion force, so as to prevent the second magnetic member 322 and the second coil 321 from continuing to approach each other through the magnetic repulsion force, thereby increasing the resistance to the movement of the lens 200 along the optical axis, and then achieving buffering. This structure can avoid the generation of a third magnetic force between the third magnetic member 332 and the third coil 331, which is conducive to reducing energy consumption.

[0046] In other embodiments, when the lens 200 is away from the photosensitive chip 800 of the camera module and drives the second magnetic member 322 to approach the second coil 321, and drives the third magnetic member 332 away from the third coil 331, the third magnetic force can be a magnetic attraction force, so as to prevent the third coil 331 and the third magnetic member 332 from continuing to move away from each other through the magnetic attraction force, thereby increasing the resistance encountered by the lens 200 moving along the optical axis direction to achieve buffering. This structure can avoid the generation of a second magnetic force between the second magnetic member 322 and the second coil 321, thereby helping to reduce energy consumption.

[0047] When the lens 200 is close to the photosensitive chip 800 of the camera module and drives the second magnetic part 322 away from the second coil 321, and drives the third magnetic part 332 close to the third coil 331, the second magnetic force can be a magnetic attraction force, and the third magnetic force can be a magnetic repulsion force. This structure prevents the second magnetic part 322 and the second coil 321 from moving away from each other through the second magnetic force, and prevents the third coil 331 and the third magnetic part 332 from moving close to each other through the third magnetic force, so as to increase the resistance encountered by the lens 200 moving along the optical axis direction, so that when one of the second buffer part 320 and the third buffer part 330 fails, the other can still work normally, thereby improving the reliability of the buffer mechanism 300, so as to be able to perform buffering more stably.

[0048] Of course, when the lens 200 is close to the photosensitive chip 800 of the camera module and drives the second magnetic member 322 away from the second coil 321, and drives the third magnetic member 332 close to the third coil 331, the second magnetic force can be a magnetic attraction force, so as to prevent the second magnetic member 322 and the second coil 321 from continuing to move away from each other through the magnetic attraction force, thereby increasing the resistance encountered by the lens 200 moving along the optical axis direction, thereby achieving buffering. This structure can avoid the generation of a third magnetic force between the third magnetic member 332 and the third coil 331, which is conducive to reducing energy consumption.

[0049] In other embodiments, when the lens 200 is close to the photosensitive chip 800 of the camera module and drives the second magnetic member 322 away from the second coil 321, and drives the third magnetic member 332 close to the third coil 331, the third magnetic force may be a magnetic repulsion force. This structure can avoid the generation of the second magnetic force between the second magnetic member 322 and the second coil 321, thereby helping to reduce energy consumption.

[0050] In the embodiment of the present application, the camera module may further include a detector 600 and a controller 700. Both the detector 600 and the controller 700 may be disposed in the housing 100. The detector 600 may be electrically connected to the controller 700. The detector 600 may be used to detect the angle between the actual moving direction of the lens 200 and the gravity direction. The controller 700 may be used to adjust the resistance according to the angle. The resistance may be inversely proportional to the angle, and the resistance may decrease as the angle increases. This structure can more efficiently and accurately adjust the resistance of the lens 200 moving along the optical axis, thereby enabling better buffering.

[0051] Specifically, when the angle is 0 degrees, the actual moving direction of the detection lens 200 is the same as the direction of gravity. In this case, the resistance can be increased and the resistance can reach the maximum value, so that it can be buffered more effectively. When the angle is 90 degrees, the actual moving direction of the detection lens 200 is perpendicular to the direction of gravity. In this case, the resistance can be reduced to achieve buffering while avoiding affecting the normal movement of the lens 200 as much as possible. In addition, when the angle is 180 degrees, the actual moving direction of the detection lens 200 is opposite to the direction of gravity. In this case, the resistance can be reduced and the resistance can reach the minimum value, so that it can be better buffered and avoid affecting the normal movement of the lens 200.

[0052] Of course, in the case where the resistance includes friction, the controller 700 can be used to adjust the friction according to the angle, thereby changing the magnitude of the resistance.

[0053] In a further technical solution, the detector 600 may include a gravity sensor, which may be used to determine the moving direction by detecting the position information of the lens 200 to determine the angle, so that the controller 700 can control the buffer mechanism 300 to adjust the resistance of the lens 200 along the optical axis according to different angles. Specifically, the position information detected by the gravity sensor may be the acceleration, relative displacement, etc. of the lens 200. In addition, the detector 600 may also include a gyroscope, so that the moving direction may be determined by detecting the position information of the lens 200 through the gyroscope.

[0054] Optionally, in the case where the camera module includes the first buffer portion 310, the second buffer portion 320 and the third buffer portion 330, the detector 600, the first coil 311, the second coil 321 and the third coil 331 can be electrically connected to the controller 700 respectively, the detector 600 can be used to detect the moving direction of the lens 200 along the optical axis direction, and can be used to feed back the moving direction to the controller 700, and the controller 700 can be used to control the buffer mechanism 300 according to different moving directions to control the first coil 311, the second coil 321 and the third coil 331 respectively, so as to adjust the resistance of the lens 200 moving along the optical axis direction. Specifically, the controller 700 can be a driving chip.

[0055] Based on the camera module disclosed in the embodiments of the present application, the present application further discloses an electronic device. The disclosed electronic device includes a housing and the camera module of any one of the above embodiments, and the camera module is arranged in the housing.

[0056] In the examples of the present application, the electronic device may be a mobile phone, a tablet computer, a laptop computer, a smart wearable device, an e-book reader, an electronic game console, or the like. The embodiments of the present application do not limit the specific types of electronic devices.

[0057] The above embodiments of the present invention focus on the differences between the various embodiments. As long as the different optimization features of the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0058] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation modes, which are merely illustrative rather than restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are within the protection of the present invention.

Claims

1. A camera module, characterized in that: It comprises a housing (100), a lens (200), a buffer mechanism (300) and a driving mechanism (400); The lens (200) is movably disposed on the housing (100); the buffer mechanism (300) and the drive mechanism (400) are both disposed on the housing (100); the buffer mechanism (300) and the drive mechanism (400) are respectively connected to the lens (200); the drive mechanism (400) is used to drive the lens (200) to move along the optical axis direction of the lens (200) for focusing; and the buffer mechanism (300) is used to adjust the resistance encountered by the lens (200) when moving along the optical axis direction by cooperating with the lens (200).

2. The camera module according to claim 1, characterized in that: The buffer mechanism (300) comprises a first buffer portion (310), the first buffer portion (310) comprises a first coil (311) and a first magnetic member (312), the first coil (311) is arranged on the housing (100), and the first magnetic member (312) is arranged on the lens (200); The first coil (311) is used to generate a first magnetic force with the first magnetic member (312), and the pressure between the lens (200) and the housing (100) in a direction perpendicular to the optical axis is adjusted by the first magnetic force, thereby adjusting the friction force of the housing (100) exerted on the lens (200) when it moves along the optical axis, wherein the resistance includes the friction force.

3. The camera module according to claim 2, characterized in that: The camera module further comprises a rolling body (500), wherein the rolling body (500) is arranged between the lens (200) and the housing (100), and the lens (200) moves along the optical axis direction through the rolling of the rolling body (500).

4. The camera module according to claim 1, characterized in that: The buffer mechanism (300) comprises at least one of a second buffer portion (320) and a third buffer portion (330), the second buffer portion (320) comprising a second coil (321) and a second magnetic member (322), and the third buffer portion (330) comprising a third coil (331) and a third magnetic member (332); The second coil (321) is provided on the housing (100), the second magnetic member (322) is provided on the lens (200), the second coil (321) is used to generate a second magnetic force with the second magnetic member (322), and the resistance comprises the second magnetic force; The third coil (331) is arranged on the housing (100), the third magnetic member (332) is arranged on the lens (200), the third coil (331) is used to generate a third magnetic force with the third magnetic member (332), the resistance comprises the third magnetic force, one of the second magnetic force and the third magnetic force is a magnetic attraction force, and the other is a magnetic repulsion force.

5. The camera module according to claim 4, characterized in that: The second coil (321) and the second magnetic member (322) are distributed along the optical axis direction, and the driving mechanism (400) drives the lens (200) to move along the optical axis direction to drive the second magnetic member (322) to approach or move away from the second coil (321); When the lens (200) is away from the photosensitive chip (800) of the camera module and drives the second magnetic member (322) to approach the second coil (321), the second magnetic force is a magnetic repulsion force; When the lens (200) is close to the photosensitive chip (800) and drives the second magnetic member (322) away from the second coil (321), the second magnetic force is a magnetic attraction force.

6. The camera module according to claim 4, characterized in that: The third coil (331) and the third magnetic member (332) are distributed along the optical axis direction, and the lens (200) drives the third magnetic member (332) to move closer to or farther from the third coil (331) by moving along the optical axis direction; When the lens (200) is close to the photosensitive chip (800) of the camera module and drives the third magnetic component (332) to be close to the third coil (331), the third magnetic force is a magnetic repulsion force; When the lens (200) is away from the photosensitive chip (800) and drives the third magnetic component (332) away from the third coil (331), the third magnetic force is a magnetic attraction force.

7. The camera module according to claim 4, characterized in that: The second buffer portion (320) and the third buffer portion (330) are distributed on both sides of the lens (200) along the optical axis direction; When the lens (200) is away from the photosensitive chip (800) of the camera module and drives the second magnetic member (322) to approach the second coil (321) and drives the third magnetic member (332) away from the third coil (331), the second magnetic force is a magnetic repulsion force and the third magnetic force is a magnetic attraction force; When the lens (200) is close to the photosensitive chip (800) and drives the second magnetic component (322) away from the second coil (321) and drives the third magnetic component (332) close to the third coil (331), the second magnetic force is a magnetic attraction force and the third magnetic force is a magnetic repulsion force.

8. The camera module according to claim 1, characterized in that: The camera module further comprises a detector (600) and a controller (700), wherein the detector (600) is used to detect the angle between the actual moving direction of the lens (200) and the direction of gravity, and the controller (700) is used to adjust the resistance according to the angle, wherein the resistance is inversely proportional to the angle.

9. The camera module according to claim 8, characterized in that: The detector (600) comprises a gravity sensor, and the gravity sensor is used to determine the angle by detecting position information of the lens (200).

10. An electronic device, characterized in that: It comprises a housing and a camera module as described in any one of claims 1 to 9, wherein the camera module is arranged in the housing.

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