Camera module and electronic device

Abstract

The application provides a camera module and an electronic device. The module comprises: a base; a first lens and a first support, the first lens is arranged in the first support and connected with the first support, the first lens and the first support are arranged on the base; a second lens and a second support, the second lens and the first support are arranged in the second support, and the second lens is connected with the second support, the second lens is arranged on the side of the first support away from the base; a first driving mechanism connected with the first support and the second support respectively, under the driving of the first driving mechanism, the first lens moves relative to the second support along the optical axis direction; a second driving mechanism comprising an SMA wire, the SMA wire is connected with the second support and the base respectively, under the driving of the second driving mechanism, the first lens and the second lens move relative to the base along the direction perpendicular to the optical axis. The camera module and the electronic device provided by the application can realize the thinning of the electronic device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of photographing, in particular to a camera module and an electronic device. BACKGROUND

[0002] With the increasing use requirements of users, the target surface of the image sensor of the consumer electronic product is larger and larger to improve the imaging quality. For example, a larger sensor target surface is used to provide higher image resolution, better depth of field control, etc.

[0003] However, with the increase of the target surface of the image sensor, the length of the optical path required for the light to enter the lens and be transmitted to the image sensor is longer and longer, resulting in a higher and heavier camera, which is difficult to meet the design and use requirements of the thin and light electronic device. SUMMARY

[0004] The present application provides a camera module and an electronic device, which can facilitate the thinning of the electronic device.

[0005] In a first aspect, a camera module is provided, comprising: a base; a first lens and a first support, the first lens being arranged in the first support and connected with the first support, the first lens and the first support being arranged on the same side of the base; a second lens and a second support, the second lens and the first support being arranged in the second support, and the second lens being connected with the second support, the second lens being arranged on a side of the first support away from the base; a first driving mechanism, the first driving mechanism being connected with the first support and the second support respectively, under the driving of the first driving mechanism, the first lens moves relative to the second support along an optical axis direction of the camera module; a second driving mechanism, the second driving mechanism comprising a shape memory alloy (SMA) wire, the SMA wire being connected with the second support and the base respectively, under the driving of the second driving mechanism, the first lens and the second lens can move relative to the base along a direction perpendicular to the optical axis.

[0006] In the embodiments provided by the present application, the SMA wire is used to drive the movement of the support and the lens. The SMA wire has a small volume, a simple structure, and occupies a small space and weight. In the camera module with a large target surface image sensor, the module size and weight can be compressed as much as possible to realize the thinning of the camera module. Moreover, the SMA wire has a large driving force and load capacity, can quickly and accurately drive the lens and the support, can realize a large anti-shake angle, improve the anti-shake effect, and optimize the imaging quality. The camera module comprises a first lens and a second lens, the first lens moves along the optical axis direction under the driving of the first driving mechanism to realize automatic focusing, which can reduce the driving space required for lens movement and reduce the module height.

[0007] In some implementations of the first aspect, the camera module further includes a slide rod fixedly connected to the second support, the slide rod extending along the optical axis direction; and the first support includes a slide groove extending along the optical axis direction, and at least a portion of the slide rod is disposed in the slide groove.

[0008] In the embodiments provided in the present application, the camera module includes a slide rod fixedly connected to the second support, and the slide rod extends along the optical axis direction. Under the driving of the first driving mechanism, the second support can move along the extension direction of the slide rod, thereby improving the directionality and stability of the movement of the first support, reducing the inclination and shaking during the movement of the first support, and improving the imaging quality of the camera module. Moreover, the first support slides along the extension direction of the slide rod, thereby increasing the sliding stroke of the first support and the automatic focusing range of the camera module.

[0009] In some implementations of the first aspect, the camera module further includes a second magnet, the first support includes a first slot, the second magnet is disposed in the first slot, and the slide rod and the second magnet are mutually attracted.

[0010] In the embodiments provided in the present application, the camera module includes a second magnet, and the second magnet and the slide rod are mutually attracted, thereby further improving the directionality and stability of the sliding of the first support, so that the first support can be attached to the surface of the slide rod and slide along the extension direction of the slide rod. Moreover, the second magnet and the slide rod are mutually attracted, and under the action of the magnetic attraction, the first support can move synchronously with the second support when the second support moves along the direction perpendicular to the optical axis, thereby achieving OIS anti-shake together.

[0011] In some implementations of the first aspect, the first driving mechanism includes a first magnet and a coil, one of the first magnet and the coil is disposed on the first support, and the other is disposed on the second support, and the first magnet and the coil are oppositely disposed.

[0012] In the embodiments provided in the present application, the first magnet and the coil can provide driving force for the movement of the first support along the optical axis direction.

[0013] In some implementations of the first aspect, along the circumferential direction of the first support, the first magnet and the second magnet are respectively disposed on two sides of the slide rod.

[0014] In the embodiments provided in the present application, the second magnet is disposed on the side of the slide rod away from the first magnet, thereby preventing the electromagnetic induction between the first magnet and the coil from interfering with the magnetic attraction between the second magnet and the slide rod.

[0015] In some implementations of the first aspect, the SMA wire is disposed on a side of the base distal from the first support; and the second support comprises a first body portion and a connecting portion, the connecting portion being disposed on a side of the first body portion proximal to the base, and the SMA wire is connected to the connecting portion.

[0016] In the embodiments provided in the present application, the SMA wire is disposed on a side of the base distal from the first support, which can facilitate the separation of the elastic member and the SMA wire and prevent the motion of the elastic member and the SMA wire from interfering with each other; and the second support comprises a first body portion and a connecting portion, which can facilitate the SMA wire to be connected to the second support and the base on the same side of the base, so as to reduce the structural space occupied by the SMA wire.

[0017] In some implementations of the first aspect, the second driving mechanism further comprises a first jaw through which the SMA wire is connected to the second support, and / or the second driving mechanism further comprises a second jaw through which the SMA wire is connected to the base.

[0018] In the embodiments provided in the present application, the second driving mechanism comprises a first jaw and / or a second jaw, and the SMA wire is connected to the second support and the base through the first jaw and the second jaw, respectively, which can improve the stability of the connection between the SMA wire and the second support and the base and improve the stability of the electrical connection between the SMA wire and the second support and the base.

[0019] In some implementations of the first aspect, the camera module further comprises an elastic member, one end of the elastic member being connected to the second support and the other end of the elastic member being connected to the base; and when the SMA wire is in a contracted state, the elastic member is in a stretched state.

[0020] In the embodiments provided in the present application, the camera module comprises an elastic member, one end of the elastic member being connected to the second support and the other end of the elastic member being connected to the base, and when the second support moves in a direction perpendicular to the optical axis, the elastic member can balance and buffer the stress of the second support, so that the linearity and stability of the movement of the second support are better; and when the SMA wire is in a contracted state, the elastic member is in a stretched state, and after the SMA wire is powered off and recovers from the deformation, the elastic force generated by the deformation of the elastic member can drive the second support to return to the initial position.

[0021] In some implementations of the first aspect, the elastic member is disposed on a side of the second support distal from the base; and the base comprises a second body portion and a protruding portion, the protruding portion being disposed on a side of the second body portion proximal to the second support, and the protruding portion is located at the periphery of the second support, and the elastic member is connected to the protruding portion.

[0022] In the embodiments provided in the present application, the elastic member is arranged on the side of the first support away from the base, which can facilitate the separation of the elastic member and the SMA wire, and prevent the movement of the elastic member and the movement of the SMA wire from interfering with each other; the base includes a second main body part and a protruding part, which can facilitate the connection of the elastic member with the second support and the base on the same side of the second support, and reduce the structural space occupied by the elastic member.

[0023] With reference to the first aspect, in some implementations of the first aspect, the number of elastic members is a plurality, and the plurality of elastic members are symmetrically distributed about the optical axis of the camera module.

[0024] In the embodiments provided in the present application, the plurality of elastic members are symmetrically distributed about the optical axis of the camera module, and when the second support moves, the deformation amounts of the plurality of elastic members are the same, which can further balance and buffer the stress of the second support, so that the movement of the second support is more stable.

[0025] With reference to the first aspect, in some implementations of the first aspect, one side of the base close to the second support is provided with a first groove, the camera module further includes a ball, the ball is arranged in the first groove, and the second support is carried on the ball.

[0026] In the embodiments provided in the present application, one side of the base close to the second support is provided with a first groove, and a ball is arranged in the first groove, and the second support is carried on the ball to move, which can reduce the resistance in the movement of the second support, and ensure that the second support remains in the same plane during the movement.

[0027] With reference to the first aspect, in some implementations of the first aspect, the camera module further includes a third magnet and a magnetic attraction member, one of the third magnet and the magnetic attraction member is arranged on the base, and the other is arranged on the second support, and the third magnet and the magnetic attraction member attract each other.

[0028] In the embodiments provided in the present application, the camera module includes a third magnet and a magnetic attraction member, one of the third magnet and the magnetic attraction member is arranged on the base, and the other is arranged on the second support, which can further ensure that the second support moves in a certain plane.

[0029] The second aspect provides an electronic device including the camera module as described in the first aspect or any possible implementation manner of the first aspect. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a structural schematic diagram of an electronic device provided by the embodiments of the present application;

[0031] Figure 2 is a three-dimensional structural schematic diagram of a camera module provided by the embodiments of the present application;

[0032] Figure 3 is an exploded structural schematic diagram of a camera module provided by an embodiment of the present application;

[0033] Figure 4 is a cross-sectional structural schematic diagram of a camera module provided by an embodiment of the present application;

[0034] Figure 5 is a cross-sectional structural schematic diagram of a first support and a second support provided by an embodiment of the present application;

[0035] Figure 6 is a separation structural schematic diagram of a first support and a first driving mechanism provided by an embodiment of the present application;

[0036] Figure 7 is a separation structural schematic diagram of a first support and a guide assembly provided by an embodiment of the present application;

[0037] Figure 8 is a separation structural schematic diagram of a second support, a base and a second driving mechanism provided by an embodiment of the present application;

[0038] Figure 9 is a structural schematic diagram of a second driving mechanism provided by an embodiment of the present application;

[0039] Figure 10 is a structural schematic diagram of an elastic member provided by an embodiment of the present application;

[0040] Figure 11 is a structural schematic diagram of a second support and an elastic member provided by an embodiment of the present application;

[0041] Figure 12 is a structural schematic diagram of a base provided by an embodiment of the present application;

[0042] Figure 13 is a separation structural schematic diagram of a second support and a base provided by an embodiment of the present application;

[0043] Figure 14 is a separation structural schematic diagram of a substrate assembly provided by an embodiment of the present application. DETAILED DESCRIPTION

[0044] The technical solutions in the present application will be described below with reference to the drawings.

[0045] Reference within the specification to "one embodiment" or "an embodiment" or "some embodiments" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. The appearances of the phrase "in one embodiment" or "in some embodiments" in various places within specified

[0046] In various embodiments of the present application, the first, second, etc. are only to represent that the multiple objects are different. For example, the first magnet and the second magnet are only to represent different magnets. The first, second, etc. should not have any influence on the magnets themselves and the number, etc. The first, second, etc. should not cause any limitation on the embodiments of the present application.

[0047] The terms "comprises", "comprising", "includes", "including", "has", "having" and their conjugates mean "including but not limited to", unless otherwise expressly stated.

[0048] Figure 1 FIG. 1 is a structural schematic diagram of an electronic device according to an embodiment of the present application. The electronic device 100 can be an electronic device having a camera or a photographing function, such as a mobile phone, a tablet computer, a television (or a smart screen), a laptop computer, a video camera, a video recorder, a camera, etc. For the convenience of understanding, the electronic device 100 is taken as a mobile phone in the embodiments of the present application.

[0049] The electronic device 100 can include a display screen 130 and a housing 140. The housing can include a frame and a back cover. The frame can surround the outer periphery of the display screen 130, and the frame can surround the outer periphery of the back cover. The frame and the back cover can be an integral structure, or can be two parts connected to each other. There can be a certain gap between the display screen 130 and the back cover to accommodate the electronic devices required by the electronic devices.

[0050] A front camera module 110 can be disposed on the display screen 130 of the electronic device 100. As shown in the left drawing of FIG. 1, the front camera module 110 can be mounted on the upper left part of the display screen 130. The front camera module 110 can be used for, for example, self-shooting. Figure 1

[0051] A rear camera module 120 can be disposed on the back cover of the electronic device 100. As shown in the right drawing of FIG. 1, the rear camera module 120 can be mounted on the upper middle part of the back cover. The rear camera module 120 can be used for, for example, shooting the scene around the electronic device 100. Figure 1

[0052] It should be understood that, Figure 1 ​​The mounting positions of the front camera module 110 and the rear camera module 120 shown are merely illustrative, and the number of camera modules mounted on the electronic device 100 can not be limited. In some other embodiments, the front camera module 110 and the rear camera module 120 can also be mounted at other positions on the electronic device 100. For example, the front camera module 110 can be mounted at the upper middle or upper right of the display screen 130. For another example, the rear camera module 120 can be mounted at the upper left or upper right of the rear cover. In addition, Figure 1 The number of camera modules mounted shown is also illustrative, and the number of camera modules mounted can not be limited, and the electronic device 100 can include more or fewer camera modules.

[0053] Figure 2 is a schematic diagram of the overall structure of the camera module provided by the embodiments of the present application, which can be Figure 1 The rear camera described in the electronic device can also be a front camera, and the camera module can be a main camera in the camera, or can also be a long-focus camera, a periscope camera, etc., and the present application does not limit this.

[0054] Figure 3 is an exploded structural schematic diagram of the camera shown, Figure 2 Figure 4 is a schematic diagram of the cross-sectional structure of the camera module along the YZ plane shown, Figure 2 As shown in Figure 3 or Figure 4 The camera module can include a base 240, a first lens 231, a second lens 221, a first support 230 and a second support 220. The first lens 231 and the first support 230 can be disposed on the same side of the base 240, and the first lens 231 can be disposed in the first support 230. The second support 220 can also be disposed on the base 240, and the second lens 221 and the first support 230 can be disposed in the second support 220, and the second lens 221 can be disposed on the side of the first support 230 away from the base 240. The first support 230 can also be referred to as a carrier, and the second support 220 can also be referred to as a frame.

[0055] ​The first support 230 can include a hollow cavity, the first lens 231 can be arranged in the hollow cavity of the first support 230, and the first lens 231 can be fixedly connected with the first support 230. The first lens 231 can include one or more lenses and a lens barrel, the one or more lenses can be arranged in sequence along the optical axis direction, and the one or more lenses can be arranged in the lens barrel, and the lens barrel of the first lens 231 is connected with the first support 230. Similarly, the second support 220 can also include a hollow cavity, the second lens 221 and the first support 230 can be arranged in the hollow cavity of the second support 220, the second lens 221 can be fixedly connected with the second support 220, and the first support 230 and the second support 220 can be movably connected. The second lens 221 can also include one or more lenses and a lens barrel, the one or more lenses can be arranged in sequence along the optical axis direction, and the one or more lenses can be arranged in the lens barrel, and the lens barrel of the second lens 221 is connected with the second support 220.

[0056] With reference to the foregoing Figure 3 Or Figure 4 The camera module can further include a first driving mechanism 260 connected between the first support 230 and the second support 220. Under the driving of the first driving mechanism 260, the first lens 231 and the first support 230 can move relative to the second support 220 along the optical axis OO' direction, that is, the Z-axis direction shown in the figure. The first driving mechanism 260 can also be referred to as an auto focus (AF) driving mechanism. By the relative movement of the first lens 231 along the optical axis direction, the adjustment of the focal length of the camera module is realized.

[0057] With reference to the foregoing Figure 3 The camera module can further include a second driving mechanism 270 connected with the second support 220 and the base 240. Under the driving of the second driving mechanism 270, the first support 230, the first lens 231, the second support 220 and the second lens 221 can move relative to the base 240 along a direction perpendicular to the optical axis. The second driving mechanism 270 can include a shape memory alloy (SMA) wire 271 connected with the second support 220 and the base 240, respectively. When the SMA wire 271 is powered on, the SMA wire 271 shrinks due to heating, so as to pull the second support 220 to move relative to the base 240 on the XY plane. After the SMA wire 271 is powered off, the SMA wire 271 cools down and recovers from deformation. The second driving mechanism 270 can also be referred to as an OIS driving mechanism. The movement of the first lens 231 and the second lens 221 along the direction perpendicular to the optical axis can facilitate the compensation for the shaking of the camera module and improve the imaging quality.

[0058] For the camera module with large sensor target surface area, the module volume and weight are large, the SMA wire 271 is used to drive the first lens 231 and the second lens 221 to move in the direction perpendicular to the optical axis, the SMA wire 271 has small volume, simple structure, small space and weight, and can compress the module size and weight as much as possible to realize the thinness of the camera module. Moreover, the SMA wire 271 can have large driving force and load capacity, for the camera module with large target surface, the lens and the bracket can be quickly and accurately driven, and a large anti-shake angle can be realized to improve the anti-shake effect and optimize the imaging quality. The SMA wire 271 is not easy to produce magnetic interference.

[0059] The lens is divided into the first lens 231 and the second lens 221, when AF is performed, only part of the lens in the entire lens module is driven to move, that is, the first lens 231 is driven to move, which can reduce the driving space required for the lens to move in the optical axis direction, can reduce the module height, and thus is conducive to reducing the thickness of the electronic device. This focusing method can also be called internal focusing.

[0060] The second bracket 220 can be a one-piece structure, the first bracket 230 and the second lens 221 are arranged in the second bracket 220, which can make the camera module easy to assemble, improve the structural precision of lens assembly, and can reduce the number of parts of the camera module, simplify the structure of the camera module, and enhance the structural stability of the camera module.

[0061] Exemplarily, the camera module provided in the present application can be applied to a camera module with a target surface area of the image sensor greater than or equal to 1 inch. For the camera module with a target surface area less than 1 inch, the scheme provided in the present application can also be applied.

[0062] The following will be described in detail Figures 5 to 13 The driving mode of the first lens 231 and the second lens 221 will be described in detail, wherein, Figures 5 to 7 The AF driving scheme, that is, the scheme of driving the first lens 231 to move along the optical axis, Figures 8 to 13 The OIS anti-shake driving scheme, that is, the scheme of driving the first lens 231 and the second lens 221 to move together in the direction perpendicular to the optical axis, first Figures 5 to 7 The AF driving scheme will be described.

[0063] Figure 5 is a cross-sectional structure schematic view of the first bracket 230 and the second bracket 220 along the XY plane, such as Figure 5As shown, the first driving mechanism 260 can include a second magnet 261 and a coil 262. The second magnet 261 can be disposed on the first support 230, and the second magnet 261 can be disposed on the outer wall of the first support 230. The coil 262 can be disposed on the second support 220, and the coil 262 can be disposed on the inner wall of the second support 220. The coil 262 can be located in the magnetic field of the second magnet 261.

[0064] Exemplarily, Figure 6 A schematic diagram of the separation structure of the first driving mechanism 260 and the first support 230 is shown in FIG. 4. As shown in FIG. 4, Figure 5 or Figure 6 As shown, one side of the first support 230 close to the second support 220 can be provided with a groove 233, and the second magnet 261 can be disposed in the groove 233. The second magnet 261 can be fixed in the groove 233 by bonding.

[0065] Correspondingly, continuing to refer to Figure 5 As shown, one side of the second support 220 close to the first support 230 can be provided with a groove 223, and the groove 223 can be oppositely disposed with the groove 233. The coil 262 can be disposed in the groove 223.

[0066] When the camera module is in automatic focusing, the coil 262 is powered to generate a magnetic field. The magnetic field generated by the coil 262 interacts with the magnetic field generated by the second magnet 261, which drives the second magnet 261 to drive the first support 230 to move up and down along the optical axis direction of the camera module. The first lens 231 moves up and down along the optical axis direction together with the first support 230, thereby realizing automatic focusing.

[0067] The second magnet 261 and the coil 262 can also be interchanged. The second magnet 261 can be disposed on the second support 220, and the coil 262 can be disposed on the first support 230. When the coil 262 is disposed on the second support 220, an electrical connection structure can be provided on the second support 220 to facilitate the power supply of the coil 262. When the coil 262 is disposed on the first support 230, the electrical connection structure can be provided on the first support 230.

[0068] The number of the second magnets 261 can be multiple, or in other words, multiple magnets can be included in each first driving mechanism 260. The overall structure formed by the multiple second magnets 261 can be oppositely disposed with the coil 262, and the overall structure formed by the multiple second magnets 261 can cooperate with the coil 262 to drive the movement of the first support 230 and the first lens 231.

[0069] When the number of the second magnets 261 is multiple, the multiple second magnets 261 can form a Halbach array structure. In the Halbach array structure, the N poles of some magnets pointing to the direction of S poles can be arranged along the Z direction, the N poles of some magnets pointing to the direction of S poles can be arranged along the direction on the XY plane, and the magnets arranged in different manners can be arranged alternately, so that the surface of the magnet assembly facing the coil 262 has a large magnetic field strength, thereby a small current can drive the first support 230 connected to the magnet assembly, and the driving power consumption is reduced.

[0070] When the first driving mechanism 260 includes a second magnet 261, the second magnet 261 can also form a Halbach array. For example, the second magnet 261 can be integrated with magnetization, different magnetization directions can be formed at different parts of the second magnet 261, and multiple magnet units with different magnetization directions can be formed inside the second magnet 261 to form a Halbach array.

[0071] The number of the first driving mechanism 260 can be multiple, and the multiple first driving mechanisms 260 can be arranged symmetrically to make the movement of the first support 230 more stable. For example, the number of the first driving mechanism 260 can be two, and the two first driving mechanisms 260 can be arranged symmetrically along the diameter direction of the camera module.

[0072] During the AF movement of the first support 230, the camera module needs to determine the position of the first support 230 to determine whether the target focal length is reached. For this purpose, continuing to refer to the structure shown in Figure 5 In some embodiments, the camera module can further include a Hall magnet 232 and a first chip 222, and the first chip 222 and the Hall magnet 232 can be used to determine the position of the first support 230.

[0073] Specifically, the Hall magnet 232 can be arranged on the first support 230, the first chip 222 can be arranged on the second support 220, and the first chip 222 can be arranged in the magnetic field of the Hall magnet 232.

[0074] Exemplarily, the Hall magnet 232 can be attached to one side of the first support 230 close to the second support 220, and the first chip 222 can be attached to one side of the second support 220 close to the first support 230, and the Hall magnet 232 and the first chip 222 can be oppositely arranged. Alternatively, one side of the first support 230 close to the second support 220 can be provided with a groove, and the Hall magnet 232 can be arranged in the groove. Similarly, one side of the second support 220 can also be provided with a groove, and the first chip 222 can be arranged in the groove, so that the structure of the first chip 222 and the Hall magnet 232 is more stable.

[0075] It should be understood that the Hall magnet 232 shown is a cuboid structure, and the Hall magnet 232 can also be other structures such as an arc shape, which is not limited in the present application. The Hall magnet 232 and the first chip 222 can also be arranged staggered, and the arrangement position of the Hall magnet 232 and the first chip 222 can be adjusted according to the shape structure of the first support 230 and the second support 220, and the first chip 222 can detect the position change of the Hall magnet 232.

[0076] The Hall sensor can be integrated on the first chip 222, and the Hall sensor can be used to detect the magnetic field size of the Hall magnet 232. When the first support 230 moves along the optical axis direction under the driving action of the first driving mechanism 260, the position of the Hall magnet 232 changes, and the magnetic field size of the Hall magnet 232 detected by the first chip 222 can also change accordingly. According to the detected magnetic field size, the first chip 222 can determine the position of the first support 230, and further determine whether the position of the first support 230 moved is the position corresponding to the target focal length. When it is determined that the first support 230 reaches the target position, the first chip 222 can stop driving the first support 230, and when it is determined that the first support 230 does not reach the target position, the first support 230 can continue to be driven to move.

[0077] In order to improve the directionality and stability of the first support 230 when performing AF movement, the camera module can further include a guide assembly. Figure 7 The separation structure of the first support 230 and the guide assembly is shown in the figure, and reference is made to Figure 5 Or Figure 7 The guide assembly can include a slide rod 224, and the axial direction of the slide rod 224 can be parallel to the optical axis direction, and the slide rod 224 can be fixedly connected with the second support 220.

[0078] Exemplarily, the second support 220 can include a groove 225, which can be a circular arc structure when the slide rod 224 is a cylindrical structure, so as to increase the contact area between the slide rod 224 and the groove 225, so that the slide rod 224 can be stably connected with the second support 220. The slide rod 224 can be fixedly connected with the groove 225 by means of bonding. When the first support 230 is sleeved in the second support 220, the groove 225 can be arranged on the side of the slide rod 224 close to the second magnet 261.

[0079] Correspondingly, with continuous reference to Figure 5 Or Figure 7 The first support 230 can include a sliding groove 234 extending along the optical axis direction, and at least part of the slide rod 224 is arranged in the sliding groove 234, and the slide rod 224 can be slidingly connected with the first support 230 through the sliding groove 234.

[0080] When the slide rod 224 is a cylindrical structure, the sliding groove 234 can be a circular arc structure, so that the part of the slide rod 224 other than the part in contact with the groove 225 can be arranged in the sliding groove 234, and the slide rod 224 and the sliding groove 234 can have a contact surface, and the sliding groove 234 can be fitted on the slide rod 224 to slide, so as to facilitate positioning of the sliding process of the first support 230.

[0081] As described above, under the cooperation of the second magnet 261 and the coil 262, the first support 230 can move up and down relative to the second support 220 along the optical axis direction. The first support 230 includes the sliding groove 234, the slide rod 224 is arranged in the sliding groove 234, and the axial direction of the slide rod 224 and the extension direction of the sliding groove 234 are parallel to the optical axis direction, which can ensure that the first support 230 slides along the optical axis direction, improve the directionality and stability of the movement of the first support 230, and reduce the inclination and shaking of the first support 230 during movement. Moreover, the first support 230 slides along the extension direction of the slide rod 224, which can also increase the sliding stroke of the first support 230 and increase the automatic focusing range of the camera module. In addition, the slide rod 224 is fixedly connected with the second support 220, and part of the slide rod 224 is in contact with the sliding groove 234, which can reduce the friction between the first support 230 and the slide rod 224 when the first support 230 slides along the extension direction of the slide rod 224.

[0082] In some embodiments, the sliding groove 234 can extend through the first support 230 along the optical axis direction, and correspondingly, the slide rod 224 can extend from the end of the first support 230 away from the base 240 to the end of the first support 230 close to the base 240, so as to increase the sliding stroke of the first support 230.

[0083] In some embodiments, the chute 234 can be provided with a lubricating structure. For example, the chute 234 can be filled with lubricating oil, or the surface of the chute 234 can be provided with a film layer structure with a small friction coefficient. The lubricating structure provided in the chute 234 can reduce the friction between the slide rod 224 and the chute 234, and reduce the driving power consumption.

[0084] The number of slide rods 224 can be one or more. When the number of slide rods 224 is more than one, the plurality of slide rods 224 can be arranged at intervals. The plurality of slide rods 224 can also be uniformly distributed around the first support 230. Correspondingly, the number of chutes 234 can also be one or more, and the positions of the plurality of chutes 234 can correspond to the positions of the plurality of slide rods 224, respectively. The plurality of chutes 234 and slide rods 224 can make the movement of the first support 230 more stable.

[0085] In some embodiments, continuing to refer to the structure shown in Figure 5 or Figure 7 , the guide assembly can further include a first magnet 235. Correspondingly, the first support 230 can include a first slot 236, and the first magnet 235 can be arranged in the first slot 236. The slide rod 224 and the first magnet 235 can attract each other.

[0086] In this example, the material of the slide rod 224 can be a metal material with magnetism, or the surface of the slide rod 224 can be coated with a magnetic material, so that the slide rod 224 can attract the first magnet 235. The contact area of the first support 230 and the slide rod 224 can be the area of the slide rod 224 close to the first magnet 235.

[0087] Corresponding to the arrangement of the chute 234 and the slide rod 224, the first slot 236 can also extend along the optical axis direction. The first magnet 235 can be arranged in the first slot 236 by adhesion or the like, for example, by adhesion of the adhesion member 237 to the inner wall of the first slot 236.

[0088] In some embodiments, the first magnet 235 can be arranged on the side of the slide rod 224 away from the second magnet 261. Continuing to refer to Figure 5 or Figure 7 , the second magnet 261 and the first magnet 235 are arranged along the circumferential direction of the first support 230, and can be arranged on both sides of the slide rod 224, respectively. The interval arrangement of the second magnet 261 and the first magnet 235 can prevent the electromagnetic induction between the second magnet 261 and the coil 262 from interfering with the magnetic attraction between the first magnet 235 and the slide rod 224.

[0089] In some embodiments, during the sliding of the first bracket 230 along the optical axis direction relative to the slide rod 224, the projection of the first magnet 235 on the slide rod 224 along the direction of the line connecting the first magnet 235 and the slide rod 224 (parallel to the XY plane direction) overlaps at least part of the slide rod 224, so that the first magnet 235 and the slide rod 224 can be mutually attracted during the entire sliding process of the first bracket 230. Exemplarily, the first magnet 235 can extend from the end of the first bracket 230 close to the base 240 to the end of the first bracket 230 away from the base 240, and correspondingly, the first slot 236 can also extend from the end of the first bracket 230 close to the base 240 to the end of the first bracket 230 away from the base 240.

[0090] The slide rod 224 and the first magnet 235 are mutually attracted, and when the first bracket 230 moves along the optical axis direction under the driving of the interaction force between the magnet and the coil 262, the first bracket 230 can abut against the slide rod 224, thereby being able to position the sliding of the first bracket 230, further ensuring the movement of the first bracket 230 along the axial direction of the slide rod 224, and reducing the inclination and shaking of the first bracket 230 during the sliding process. Moreover, the second magnet 261 is arranged on the first bracket 230, and the slide rod 224 is fixed on the second bracket 220, the second magnet 261 and the slide rod 224 are mutually attracted, and under the action of the magnetic force, when the first bracket 230 moves along the direction perpendicular to the optical axis, the second bracket 220 can move synchronously with the first bracket 230, so that the first lens 231 and the second lens 221 can jointly realize OIS anti-shake.

[0091] The above describes the driving principle and guiding mode of the first driving mechanism 260, and the following describes the driving principle and guiding mode of the second driving mechanism 270. Figures 5 to 7 The OIS anti-shake driving scheme is introduced. Figures 8 to 13 The OIS anti-shake driving scheme is introduced.

[0092] Figure 8 FIG. 6 is a schematic diagram of the separation structure of the second driving mechanism 270, the base 240 and the second bracket 220, and is the structure observed from the bottom direction of the module, that is, the structure observed when the substrate assembly 250 looks at the above structure. As shown in FIG. 6, the second driving mechanism 270 can include an SMA wire 271, which can be arranged on the side of the base 240 away from the second bracket 220, and one end of the SMA wire 271 can be connected with the second bracket 220, and the other end can be connected with the base 240. Figure 8

[0093] ​Exemplarily, the second bracket 220 can include a first body portion 220A and a connecting portion 220B, which can be disposed on a side of the first body portion 220A close to the base 240. The base 240 can be a frame structure, and when the second bracket 220 is disposed on the base 240, the connecting portion 220B can be located inside the base 240, that is, on a side of the base 240 close to the center of the module. When the SMA wire 271 is connected to the second bracket 220, the SMA wire 271 can be connected to the connecting portion 220B.

[0094] The number of SMA wires 271 can be multiple, for example, four as shown, including SMA wires 271A-271D, and the multiple SMA wires 271 can be disposed along the circumferential direction of the base 240. Correspondingly, the number of connecting portions 220B can also be multiple, for example, two as shown, and the two connecting portions 220B can be disposed along the diagonal direction of the base 240.

[0095] As described above, the SMA wire 271 can contract when energized, and in turn can pull the second bracket 220 to move in the XY plane. Further, since the first bracket 230 is disposed in the second bracket 220, the first bracket 230 and the second bracket 220 are attracted to each other by the magnetic attraction between the first magnet 235 and the slide rod 224, and when the second bracket 220 moves relatively under the pulling force of the SMA wire 271, the second bracket 220 can drive the first bracket 230 to move synchronously.

[0096] It should be understood that in the examples described above, when the second bracket 220 moves in the XY plane, the first bracket 230 is driven to move synchronously by the magnetic attraction between the first magnet 235 and the slide rod 224, and the second bracket 220 and the first bracket 230 can also contact each other, and the second bracket 220 drives the first bracket 230 to move synchronously by the pushing force of the second bracket 230 on the first bracket 230.

[0097] Exemplarily, continuing to refer to Figure 5The first bracket 230 can include a third body portion 230A and an extension portion 230B disposed on a side of the third body portion 230A close to the second bracket 220, and the extension portion 230B can be in contact with a side of the second bracket 220 close to the first bracket 230. When the second bracket 220 moves in the XY plane, the second bracket 230 can push the first bracket 220 to move synchronously through the contact surface of the first bracket 230 and the second bracket 220. The number of the extension portion 230B can be multiple, and multiple extension portions 230B can be distributed at intervals on the outer periphery of the third body portion 230A. When the first bracket 230 is provided with a first slot 236, the first slot 236 can be formed on the extension portion 230B, and the slot 233 can also be formed on the extension portion 230B.

[0098] To further improve the connection stability between the SMA wire 271 and the base 240 and the second bracket 220, with continued reference to Figure 8 In some embodiments, the second driving mechanism 270 can further include a first jaw 272 through which the SMA wire 271 can be connected to the second bracket 220, and / or the second driving mechanism 270 can further include a second jaw 273 through which the SMA wire 271 can be connected to the base 240. The first jaw 272 can drive the second bracket 220 to move relative to the base 240 when the SMA wire 271 shrinks, and the first jaw 272 can be referred to as a movable jaw, and the second jaw 273 can be referred to as a fixed jaw. When the SMA wire 271 is connected to the second bracket 220 through the first jaw 272, the first jaw 272 can be connected to the connecting portion 220B of the second bracket 220.

[0099] As an example, two adjacent SMA wires 271 can share a fixed jaw or a movable jaw.

[0100] With continued reference to Figure 8 The jaws 272A and 272B can be referred to as the first jaw 272, the jaws 273A and 273B can be referred to as the second jaw 273, and the number of SMA wires 271 can be four, including the illustrated SMA wires 271A-271D.

[0101] The first clamping jaw 272 can include a first fixed portion 2721 and a second fixed portion 2722, the first fixed portion 2721 can be used to connect with the second support 220, and the second fixed portion 2722 can be used to connect with the SMA wire 271. Two adjacent SMA wires 271 can share one movable clamping jaw, and accordingly, one first clamping jaw 272 can have two second fixed portions 2722, which are respectively arranged on both sides of the first fixed portion 2721.

[0102] For example, the SMA wire 271A and the SMA wire 271D can share the clamping jaw 272A, which can include one fixed portion 2721A and two fixed portions 2722A, the two fixed portions 2722A are respectively arranged on both sides of the fixed portion 2721A and are respectively connected with the SMA wire 271A and the SMA wire 271D, and the fixed portion 2721A is connected with the second support 220. Similarly, the SMA wire 271B and the SMA wire 271C can share the clamping jaw 272B, which can include one fixed portion 2721B and two fixed portions 2722B, the two fixed portions 2722B are respectively arranged on both sides of the fixed portion 2721B and are respectively connected with the SMA wire 271B and the SMA wire 271C, and the fixed portion 2721B is connected with the second support 220.

[0103] Similarly to the structure of the first clamping jaw 272, the second clamping jaw 273 can include a third fixed portion 2731 and a fourth fixed portion 2732, the third fixed portion 2731 can be used to connect with the base 240, and the fourth fixed portion 2732 can be used to connect with the SMA wire 271. Two adjacent SMA wires can also share one fixed clamping jaw, and one second clamping jaw 273 can be provided with two fourth fixed portions 2732, which are respectively arranged on both sides of the third fixed portion 2731.

[0104] For example, the SMA wire 271A and the SMA wire 271B can share the clamping jaw 273A, which can include one fixed portion 2731A and two fixed portions 2732A, the two fixed portions 2732A are respectively arranged on both sides of the fixed portion 2731A and are respectively connected with the SMA wire 271A and the SMA wire 271B, and the fixed portion 2731A is connected with the base 240. Similarly, the SMA wire 271C and the SMA wire 271D can share the clamping jaw 273B, which can include one fixed portion 2731B and two fixed portions 2732B, the two fixed portions 2732B are respectively arranged on both sides of the fixed portion 2731B and are respectively connected with the SMA wire 271C and the SMA wire 271D, and the fixed portion 2731B is connected with the base 240.

[0105] As another example, the SMA wires 271 can share only the active clamps, but not the fixed clamps. In this example, each second clamp 273 can include only one fourth fixed portion 2732, which, together with the third fixed portion 2731, can form an "L" shaped structure.

[0106] Exemplarily, as shown in the second driving mechanism 270, Figure 9 the second clamp 273 can include a clamp 273A, a clamp 273B, a clamp 273C, and a clamp 273D, the SMA wire 271A can be connected to the base 240 through the clamp 273A, wherein the fixed portion 2732A of the clamp 273A can be connected to the SMA wire 271A, and the fixed portion 2731A of the clamp 273A can be connected to the base 240. Similarly, the SMA wire 271B can be connected to the base 240 through the clamp 273B, wherein the fixed portion 2732B of the clamp 273B can be connected to the SMA wire 271B, and the fixed portion 2731B of the clamp 273B can be connected to the base 240; the SMA wire 271C can be connected to the base 240 through the clamp 273C, wherein the fixed portion 2732C of the clamp 273C can be connected to the SMA wire 271C, and the fixed portion 2731C of the clamp 273C can be connected to the base 240; the SMA wire 271D can be connected to the base 240 through the clamp 273D, wherein the fixed portion 2732D of the clamp 273D can be connected to the SMA wire 271D, and the fixed portion 2731D of the clamp 273D can be connected to the base 240.

[0107] In this example, the structure of the first clamp 272, and the connection mode of the SMA wires 271 and the first clamp 272 can be similar to the example described in Figure 8 , which will not be described here again.

[0108] It should be understood that the plurality of SMA wires 271 can also share only the fixed clamps, but not the active clamps, or the plurality of SMA wires 271 can neither share the fixed clamps nor share the active clamps, which are not limited in the present application.

[0109] In some embodiments, the SMA wires 271 can be connected to the first clamp 272 and the second clamp 273 respectively by welding, and the first clamp 272 and the second clamp 273 can be fixedly connected to the second bracket 220 and the base 240 respectively by welding.

[0110] The materials of the first clamp 272 and the second clamp 273 can be metal materials, so as to transmit the electrical signals for the SMA wires 271.

[0111] The SMA wire 271 is connected with the second support 220 and the base 240 through the first clamping jaw 272 and the second clamping jaw 273 respectively, which can make the connection of the SMA wire 271 with the second support 220 and the base 240 more stable, so as to more stably drive the second support 220 to move relative to the base 240. Moreover, the electrical connection of the SMA wire 271 can be more stable through the clamping jaw connection.

[0112] Figure 8 In the described examples, the SMA wire 271 and the clamping jaw are arranged on the side of the base 240 away from the second support 220. In the embodiments provided by the present application, the SMA wire 271 and the clamping jaw can also be arranged between the base 240 and the second support 220. When the SMA wire 271 and the clamping jaw are arranged between the base 240 and the second support 220, the first clamping jaw 272 can be connected with the first main body part 220A of the second support 220. The side of the first clamping jaw 272 close to the second support 220 is connected with the second support 220, and the side of the second clamping jaw 273 close to the base 240 is connected with the base 240, so that the first clamping jaw 272 and the second clamping jaw 273 can be connected with the second support 220 and the base 240 in the same plane.

[0113] In some embodiments, in order to improve the linearity and stability of the anti-shake movement of the second support 220, the camera module can further include an elastic member 274, one end of which can be connected with the second support 220, and the other end of which can be connected with the base 240.

[0114] Exemplarily, Figure 10 A structural diagram of the elastic member 274, Figure 11 A structural diagram of the elastic member 274 arranged on the second support 220, which is combined with reference to Figure 10 And Figure 11 The elastic member 274 can include an elastic arm 2742 and a fixed terminal 2741, and the elastic arm 2742 and the fixed terminal 2741 can constitute an L-shaped structure. The number of the fixed terminals 2741 can be multiple, for example, can include the fixed terminals 2741A and 2741B shown in the figure. The fixed terminal 2741A can be used to connect with the base 240, and the fixed terminal 2741B can be used to connect with the second support 220. Two fixed terminals 2741B can be included on one elastic member 274, and the two fixed terminals 2741B can be fixedly connected with two adjacent edges of the first support 230 respectively. The elastic arm 2742 can be located between the fixed terminal 2741A and the fixed terminal 2741B, and the elastic arm can be elastically deformed.

[0115] When the SMA wire 271 is in the contraction state, the SMA wire 271 pulls the second bracket 220 to move, and in this state, the elastic member 274 can be subjected to the pulling force from the second bracket 220, so that the elastic member 274 is elastically deformed and is in the stretching state, that is, the elastic arm 2742 can be in the stretching state. Further, after the SMA wire 271 is powered off, the SMA wire 271 restores the deformation, the pulling force of the SMA wire 271 on the second bracket 220 is removed, the external force on the elastic member 274 is removed, the elastic member 274 restores the deformation, and the second bracket 220 is pulled to return to the initial position.

[0116] Exemplarily, Figure 12 A structural diagram of the base 240 is shown in FIG. 13. As shown in FIG. 13, the base 240 can include a second body portion 240A and a protruding portion 240B, which can be arranged on a side of the second body portion 240A close to the second bracket 220. When the second bracket 220 is arranged on the base 240, the protruding portion 240B can be located at the periphery of the second bracket 220, and the structure of the second bracket 220 can correspondingly avoid the protruding portion 240B, so that the second bracket 220 can be carried on the base 240. Figure 12 The elastic member 274 can be arranged on a side of the second bracket 220 away from the base 240, and the elastic member 274 can be connected with the protruding portion 240B, and the elastic member 274 can be connected with the protruding portion 240B through the fixed terminal 2741A.

[0117] The elastic member 274 is arranged on a side of the first bracket 230 away from the base 240, so that the arrangement positions of the elastic member 274 and the SMA wire 271 can be spaced apart from each other, preventing the stretching and contraction movements of the SMA wire 271 and the elastic member 274 from interfering with each other. The base 240 includes the second body portion 240A and the protruding portion 240B, which can facilitate the elastic member 274 to be connected with the second bracket 220 and the base 240 on the same side of the second bracket 220, so as to reduce the structural space occupied by the elastic member 274.

[0118] The second body portion 240A can be a rectangular frame structure, and the number of the protruding portions 240B can be two, which are arranged on two opposite corners of the second body portion 240A, respectively. The fixed terminals 2741A of the two elastic members 274 can be connected with the two protruding portions 240B, respectively.

[0119] In some embodiments, the two elastic members 274 can be a central symmetric structure, or in other words, the two elastic members 274 can be central symmetric about the optical axis of the camera module.

[0120]

[0121] ​In the case that the two elastic members 274 are center-symmetric structures, the deformation amounts of the elastic arms 2742 of the two elastic members 274 are the same when the second holder 220 moves relative to the base 240, which can further balance and buffer the stress of the second holder 220, so that the movement of the second holder 220 on the XY plane is more stable.

[0122] The number of the illustrated elastic members 274 is two, and the number of the elastic members 274 can also be more. For example, the L-shaped elastic member 274 illustrated can be divided into two independent straight-line structures to form four elastic members, which are center-symmetric about the optical axis. For another example, an L-shaped elastic member can be respectively arranged on the four corners of the second holder 220.

[0123] When the second holder 220 moves relative to the base 240 to perform an anti-shake movement, there is a frictional force between the second holder 220 and the base 240, which can easily affect the imaging effect, for example, causing a weak jitter in the imaging image. Furthermore, in some embodiments, the camera module can further include a ball 242, which can be arranged between the base 240 and the second holder 220 to reduce the frictional force between the second holder 220 and the base 240.

[0124] Figure 13 is a schematic view of a separated structure of the second holder 220 and the base 240, and is a structure observed when the top of the second holder 220 looks at the second holder 220 and the base 240, as shown in Figure 13 The camera module can further include a first groove 241, and the ball 242 can be arranged in the first groove 241. When the second holder 220 is arranged on the base 240, the second holder 220 can be carried on the ball 242.

[0125] The second holder 220 is carried on the ball 242, and the contact mode between the second holder 220 and the ball 242 is point contact. When the second holder 220 moves relative to the base 240, the ball 242 can freely roll in the first groove 241, so as to reduce the frictional force between the second holder 220 and the base 240.

[0126] The number of the first grooves 241 can be multiple, and the multiple first grooves 241 can be dispersedly distributed on the base 240. The multiple first grooves 241 can also be symmetrically distributed on the base 240. Multiple balls 242 can be arranged in each first groove 241, and the sizes of the multiple balls 242 can be the same, so as to make the movement of the second holder 220 more stable.

[0127] The second support 220 can also be provided with a recess on the side close to the base 240. The position of the recess on the second support 220 can correspond to the position of the first recess 241. When the second support 220 is arranged on the base 240, the plurality of balls 242 can be accommodated in the first recess 241 and the recess on the second support 220.

[0128] It should be understood that, as described above, the base 240 can include a second body portion 240A and a protruding portion 240B. The first recess 241 can be arranged on the second body portion 240A, and the second support 220 can also be arranged on the second body portion 240A.

[0129] In some embodiments, the camera module can further include a third magnet 245 and a magnetic attraction member. The third magnet 245 can be arranged on the base 240, and the magnetic attraction member can be arranged on the second support 220. The third magnet 245 and the magnetic attraction member can be attracted to each other (the magnetic attraction member is not shown in the figure and can be arranged opposite the third magnet 245 along the optical axis direction). Under the magnetic attraction of the third magnet 245 and the magnetic attraction member, the movement of the second support 220 in a certain plane can be further ensured, and the stability of the movement of the second support 220 can be improved.

[0130] Correspondingly, the base 240 can be provided with a second recess 244, and the third magnet 245 can be arranged in the second recess 244. For example, the third magnet 245 can be bonded in the second recess 244. Similarly, the side of the second support 220 close to the base 240 can also be provided with a recess, which can be arranged opposite the second recess 244, and the magnetic attraction member can be arranged in the recess.

[0131] The third magnet 245 and the magnetic attraction member can also be interchanged. The third magnet 245 can be arranged on the second support 220, and the magnetic attraction member can be arranged on the base 240. In this example, the magnetic attraction member can be arranged in the second recess 244.

[0132] To realize the normal operation of the first driving mechanism 260 and the second driving mechanism 270, the camera module can further include a substrate assembly 250. The substrate assembly 250 can be used to provide electrical signals to the first driving mechanism 260 and the second driving mechanism 270.

[0133] Figure 14 A separate structure diagram of the substrate assembly 250 is shown in FIG. 6. As shown in FIG. 6, the substrate assembly 250 can include a substrate 251 and a plurality of conductive traces 252 arranged on the substrate 251. The plurality of conductive traces 252 can be used to provide electrical signals to the first driving mechanism 260 and the second driving mechanism 270. Figure 14As shown, the substrate assembly 250 can include a substrate 251, which can include a printed circuit board (PCB) that can be used to provide electrical signals to the first driving mechanism 260, the second driving mechanism 270, and the like. The substrate assembly 250 can be electrically connected to an external circuit of the camera module through a first flexible printed circuit (FPC) to transmit electrical signals.

[0134] Exemplarily, the second support 220 can be provided with a first connecting line, which can be electrically connected to the coil 262 and can be electrically connected to the substrate 251. The first connecting line can be formed in the second support 220 by an insert molding (IM) method of embedding metal. The first connecting line can be connected to the substrate 251 through a second FPC, which can be arranged between the second support 220 and the substrate 251 and can be arranged at the periphery of the base 240.

[0135] The electrical connection between the coil 262 and the substrate 251 is achieved through the first connecting line and the second FPC, so as to supply power to the coil 262 and drive the first support 230 to move relative to the second support 220 along the optical axis. The first connecting line is formed in the second support 220 by the IM method, which can also improve the structural strength of the second support 220.

[0136] Exemplarily, the base 240 can be provided with a second connecting line, which can be electrically connected to the SMA wire 271. When the second driving mechanism 270 includes the first jaw 272 and / or the second jaw 273, the second connecting line can be electrically connected to the SMA wire 271 through the jaw, so as to supply power to the SMA wire 271 to drive the second support 220 to move relative to the base 240 along a direction perpendicular to the optical axis. Similarly to the first connecting line, the second connecting line can also be formed in the base 240 by the IM method. The second connecting line can be electrically connected to the substrate 251 through a lead wire, or the second connecting line can also be electrically connected to the substrate 251 through the second FPC. The second connecting line is embedded in the base 240 by the IM method, which can also improve the structural strength of the base 240.

[0137] The second connecting line can also be electrically connected with the elastic member 274, and the material of the elastic member 274 can be a metal material. The second connecting line can extend to the protrusion 240B to facilitate electrical connection with the elastic member 274. In this example, the elastic member 274 can be electrically connected with the SMA wire 271, and the electrical signal transmitted by the substrate 251 can be transmitted to the SMA wire 271 in sequence through the elastic member 274, the second connecting line, and the claw to provide the SMA wire 271 with the electrical signal. The elastic member 271 and the substrate 251 can also be electrically connected through the second FPC described above. The present application does not limit the specific electrical connection line in the camera module, as long as it can provide the SMA wire 271 with an electrical signal and enable the camera module to realize AF movement, OIS movement, and imaging.

[0138] Continuing to refer to Figure 14 The substrate assembly 250 can further include a second chip 252, which can be disposed on the substrate 251 and electrically connected with the substrate 251. The second chip 252 can be used to control the substrate 251 to provide the first driving mechanism 260 and the second driving mechanism 270 with electrical signals.

[0139] Continuing to refer to Figure 14 In order to enable the camera module to realize imaging, the substrate assembly 250 can further include an optical filter 253 and an image sensor 255, which can be disposed on the substrate 251, and the optical filter 253 can be disposed on the side of the image sensor 255 close to the first lens 231.

[0140] The optical filter 253 can be used to improve the effective resolution and color restoration of the image sensor 255. For example, the optical filter 253 can be an infrared filter that filters out infrared light in ambient light and transmits visible light. Alternatively, the optical filter 253 can be a double-bandpass filter that can select a wavelength range within two regions of ambient light to pass through, such as visible light and infrared light, or visible light and ultraviolet light, or ultraviolet light and infrared light, etc.

[0141] For example, the material of the optical filter 253 can be blue glass, that is, transparent glass material with blue tint, which is formed by adding components such as cobalt oxide (CoO) or copper oxide (CuO) in the glass.

[0142] The optical filter 253 can be fixedly connected with an optical filter holder 254, and disposed on the substrate 251 through the optical filter holder 254.

[0143] The image sensor 255 can be electrically connected with the substrate 251, which can be used for photoelectric conversion and transmit the generated electrical signal to the processor of the electronic device to generate an image.

[0144] To protect the internal components of the camera module, referring to the structure shown in Figure 2 or Figure 3 The camera module can further include a case 210, which can be sleeved on the second support 220.

[0145] It should be understood that the embodiments of the present application divide the lens assembly into two groups of the first lens 231 and the second lens 221, and the camera module can also include more groups of lenses, for example, three or four groups of lenses, to further reduce the height of the camera module. When the camera module includes more groups of lenses, the third lens and the fourth lens can be arranged on the side of the first lens 231 close to the base 240. The third lens and the fourth lens can be arranged in the second support 220 and can be arranged separately from the first lens 231, that is, the third lens and the fourth lens can move together with the first lens 231 and the second lens 221 for OIS, but not for AF. Alternatively, the third lens and the fourth lens can also be arranged separately from the first lens 231 and the second lens 221, and the third lens and the fourth lens do not move for OIS or AF. The third lens and the fourth lens can be used to change the optical performance of the module and improve the imaging quality.

[0146] The embodiments of the present application also provide an electronic device, which can include the camera module described in the above embodiments.

[0147] The above is merely specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A camera module, comprising: The camera module comprises: a base (240); a first lens (231) and a first support (230), the first lens (231) is arranged in the first support (230) and connected with the first support (230), the first lens (231) and the first support (230) are arranged on the same side of the base (240); a second lens (221) and a second support (220), the second lens (221) and the first support (230) are arranged in the second support (220), and the second lens (221) is connected with the second support (220), the second lens (221) is arranged on the side of the first support (230) away from the base (240); a first driving mechanism (260), the first driving mechanism (260) is connected with the first support (230) and the second support (220) respectively, under the driving of the first driving mechanism (260), the first lens (231) moves relative to the second support (220) along the optical axis direction of the camera module; a second driving mechanism (270), the second driving mechanism (270) comprises a shape memory alloy (SMA) wire (271), the SMA wire (271) is connected with the second support (220) and the base (240) respectively, under the driving of the second driving mechanism (270), the first lens (231) and the second lens (221) move relative to the base (240) along the direction perpendicular to the optical axis; the SMA wire (271) is arranged on the side of the base (240) away from the first support (230); the second support (220) comprises a first main body part (220A) and a connecting part (220B), the connecting part (220B) is arranged on the side of the first main body part (220A) close to the base (240), the SMA wire (271) is connected with the connecting part (220B).

2. The camera module of claim 1, wherein, The camera module further comprises a slide rod (224), the slide rod (224) is fixedly connected with the second support (220), the axial direction of the slide rod (224) is parallel to the optical axis direction; the first support (230) comprises a sliding groove (234), the sliding groove (234) extends along the optical axis direction, at least part of the slide rod (224) is arranged in the sliding groove (234).

3. The camera module of claim 2, wherein, The camera module further comprises a first magnet (235), the first support (230) comprises a first groove body (236), the first magnet (235) is arranged in the first groove body (236), the slide rod (224) and the first magnet (235) are mutually attracted.

4. The camera module of claim 2, wherein, The first driving mechanism (260) comprises a second magnet (261) and a coil (262), one of the second magnet (261) and the coil (262) is arranged on the first support (230), and the other is arranged on the second support (220), the second magnet (261) and the coil (262) are arranged oppositely, so that the first support (230) moves along the optical axis direction under the interaction of the second magnet (261) and the coil (262).

5. The camera module of claim 4, wherein, The camera module comprises a first magnet (235), the first support (230) comprises a first slot body (236), the first magnet (235) is arranged in the first slot body (236), the slide rod (224) and the first magnet (235) are mutually attracted, and the first magnet (235) and the second magnet (261) are arranged on both sides of the slide rod (224) along the circumferential direction of the first support (230).

6. The camera module according to any one of claims 1 to 5, wherein, The second driving mechanism (270) further comprises a first jaw (272), the SMA wire (271) is connected with the second support (220) through the first jaw (272), and / or, The second driving mechanism (270) further comprises a second jaw (273), the SMA wire (271) is connected with the base (240) through the second jaw (273).

7. The camera module of any one of claims 1-5, wherein, The camera module further comprises an elastic member (274), one end of the elastic member (274) is connected with the second support (220), and the other end is connected with the base (240); When the SMA wire (271) is in a contraction state, the elastic member (274) is in a stretching state.

8. The camera module of claim 7, wherein, The elastic member (274) is arranged on the side of the second support (220) away from the base (240); The base (240) comprises a second main body portion (240A) and a protruding portion (240B), the protruding portion (240B) is arranged on the side of the second main body portion (240A) close to the second support (220), and the protruding portion (240B) is located at the periphery of the second support (220), and the elastic member (274) is connected with the protruding portion (240B).

9. The camera module of claim 7, wherein, The number of the elastic members (274) is multiple, and the multiple elastic members (274) are distributed in a central symmetric structure about the optical axis of the camera module.

10. The camera module of any one of claims 1-5, wherein, The side of the base (240) close to the second support (220) is provided with a first groove (241), and the camera module further comprises a ball (242), the ball (242) is arranged in the first groove (241), and the second support (220) is carried on the ball (242).

11. The camera module of any one of claims 1-5, wherein, The camera module further comprises a third magnet (245) and a magnetic attraction member, one of the third magnet (245) and the magnetic attraction member is arranged on the base (240), and the other is arranged on the second support (220), and the third magnet (245) and the magnetic attraction member are mutually attracted.

12. An electronic device, comprising: A camera module comprising any one of claims 1 to 11.

Images