Camera module and electronic equipment

Abstract

The invention provides a camera module and electronic equipment. The camera 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, and the first lens and the first support are arranged on the base; the second lens and the first support are arranged in the second support, the second lens is connected with the second support, and the second lens is arranged on the side, away from the base, of the first support; the first driving mechanism is respectively connected with the first bracket and the second bracket, and the first lens moves relative to the second bracket along the optical axis direction under the driving of the first driving mechanism; the second driving mechanism comprises an SMA wire, the SMA wire is connected with the second support and the base, and under the driving of the second driving mechanism, the first lens and the second lens move relative to the base in the direction perpendicular to the optical axis. According to the camera module and the electronic equipment provided by the invention, the electronic equipment can be light and thin.

Description

Technical Field

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

[0002] As user demands increase, the image sensor targets of consumer electronic products are getting larger and larger to improve imaging quality. For example, a larger sensor target is used to provide higher image resolution and better depth of field control.

[0003] However, as the target area of ​​the image sensor increases, the optical path length that light needs to travel to enter the lens and reach the image sensor becomes longer and longer, resulting in the camera becoming taller and heavier, making it difficult to meet the design and usage requirements of lightweight electronic devices. Summary of the invention

[0004] The present application provides a camera module and an electronic device, which can help to make the electronic device lighter and thinner.

[0005] In a first aspect, a camera module is provided, comprising: a base; a first lens and a first bracket, the first lens being arranged in the first bracket and connected to the first bracket, the first lens and the first bracket being arranged on the same side of the base; a second lens and a second bracket, the second lens and the first bracket being arranged in the second bracket and the second lens being connected to the second bracket, the second lens being arranged on a side of the first bracket away from the base; a first driving mechanism, the first driving mechanism being connected to the first bracket and the second bracket, respectively, and under the drive of the first driving mechanism, the first lens moves relative to the second bracket along the 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 to the second bracket and the base, respectively, and under the drive 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 embodiment provided in the present application, the movement of the bracket and the lens is driven by an SMA wire. The SMA wire is small in size, simple in structure, occupies little space and weighs little. In a camera module with a large target image sensor, the module size and weight can be compressed as much as possible to achieve a thin and light camera module. In addition, the SMA wire has a large driving force and load-bearing capacity, can drive the lens and the bracket quickly and accurately, and can achieve a large anti-shake angle, improve the anti-shake effect, and optimize the imaging quality. The camera module includes a first lens and a second lens. The first lens moves along the optical axis under the drive of the first driving mechanism to achieve automatic focus, which can reduce the driving space required for the lens movement and reduce the module height.

[0007] In combination with the first aspect, in certain implementations of the first aspect, the camera module also includes a sliding rod, which is fixedly connected to the second bracket, and the axial direction of the sliding rod is parallel to the direction of the optical axis; the first bracket includes a sliding groove, which extends along the direction of the optical axis, and at least a portion of the sliding rod is arranged in the sliding groove.

[0008] In the embodiment provided by the present application, the camera module includes a sliding rod, which is fixedly connected to the second bracket and extends along the optical axis. Under the drive of the first driving mechanism, the second bracket can move along the extension direction of the sliding rod, thereby improving the directionality and stability of the first bracket during movement, reducing the tilt and shaking of the first bracket during movement, and improving the imaging quality of the camera module. In addition, the first bracket slides along the extension direction of the sliding rod, which can increase the sliding stroke of the first bracket, thereby increasing the autofocus range of the camera module.

[0009] In combination with the first aspect, in some implementations of the first aspect, the camera module further includes a second magnet, the first bracket includes a first slot body, the second magnet is disposed in the first slot body, and the sliding rod and the second magnet attract each other.

[0010] In the embodiment provided in the present application, the camera module includes a second magnet, and the second magnet and the sliding rod attract each other, which can further improve the directionality and stability of the sliding of the first bracket, so that the first bracket can be attached to the surface of the sliding rod and slide along the extension direction of the sliding rod; and the second magnet and the sliding rod attract each other, when the second bracket moves in a direction perpendicular to the optical axis, under the action of the magnetic attraction force, the first bracket can move synchronously with the second bracket, thereby jointly realizing OIS anti-shake.

[0011] In combination with the first aspect, in certain 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 bracket, and the other is disposed on the second bracket, and the first magnet is disposed opposite to the coil.

[0012] In the embodiment provided in the present application, a driving force can be provided for the movement of the first bracket in the direction of the optical axis through the first magnet and the coil.

[0013] In combination with the first aspect, in certain implementations of the first aspect, along the circumferential direction of the first bracket, the first magnet and the second magnet are respectively arranged on both sides of the sliding rod.

[0014] In the embodiment provided in the present application, the second magnet is arranged on a side of the slide bar away from the first magnet, which can prevent the electromagnetic induction between the first magnet and the coil from interfering with the magnetic attraction between the second magnet and the slide bar.

[0015] In combination with the first aspect, in certain implementations of the first aspect, the SMA wire is disposed on a side of the base away from the first bracket; the second bracket includes a first main body portion and a connecting portion, the connecting portion is disposed on a side of the first main body portion close to the base, and the SMA wire is connected to the connecting portion.

[0016] In the embodiment provided in the present application, the SMA wire is arranged on a side of the base away from the first bracket, which can facilitate the separation of the elastic member and the SMA wire to prevent the movement of the elastic member and the SMA wire from interfering with each other; the second bracket includes a first main body and a connecting portion, which can facilitate the SMA wire to be connected to the second bracket and the base on the same side of the base respectively, so as to reduce the structural space occupied by the SMA wire.

[0017] In combination with the first aspect, in certain implementations of the first aspect, the second driving mechanism also includes a first claw, and the SMA wire is connected to the second bracket through the first claw, and / or the second driving mechanism also includes a second claw, and the SMA wire is connected to the base through the second claw.

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

[0019] In combination with the first aspect, in certain implementations of the first aspect, the camera module also includes an elastic member, one end of which is connected to the second bracket, and the other end of which is connected to the base; when the SMA wire is in a contracted state, the elastic member is in a stretched state.

[0020] In the embodiment provided in the present application, the camera module includes an elastic member, one end of the elastic member is connected to the second bracket, and the other end is connected to the base. When the second bracket moves in a direction perpendicular to the optical axis, the elastic member can balance and buffer the force applied to the second bracket, so that the movement linearity and stability of the second bracket are better; and the elastic member is in a stretched state when the SMA wire is in a contracted state. After the SMA wire is powered off and deformed again, the elastic force generated by the deformation of the elastic member can drive the second bracket to return to its initial position.

[0021] In combination with the first aspect, in certain implementations of the first aspect, the elastic member is arranged on a side of the second bracket away from the base; the base includes a second main body and a protrusion, the protrusion is arranged on a side of the second main body close to the second bracket, and the protrusion is located on the periphery of the second bracket, and the elastic member is connected to the protrusion.

[0022] In the embodiment provided in the present application, the elastic member is arranged on a side of the first bracket away from the base, which can facilitate the separation of the elastic member and the SMA wire to 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 and a protruding portion, which can facilitate the connection of the elastic member with the second bracket and the base on the same side of the second bracket, thereby reducing the structural space occupied by the elastic member.

[0023] In combination with the first aspect, in some implementations of the first aspect, there are multiple elastic members, and the multiple elastic members are symmetrically distributed about the optical axis of the camera module.

[0024] In the embodiment provided in the present application, multiple elastic members are symmetrically distributed about the optical axis of the camera module. When the second bracket moves, the deformation amounts generated by the multiple elastic members are the same, which can further balance and buffer the force on the second bracket, making the movement of the second bracket smoother.

[0025] In combination with the first aspect, in certain implementations of the first aspect, a first groove is provided on a side of the base close to the second bracket, and the camera module also includes a ball bearing, which is provided in the first groove, and the second bracket is supported on the ball bearing.

[0026] In the embodiment provided in the present application, a first groove is provided on one side of the base close to the second bracket, and a ball is provided in the first groove. The second bracket moves on the ball, which can reduce the resistance during the movement of the second bracket and ensure that the second bracket remains on the same plane during the movement.

[0027] In combination with the first aspect, in certain implementations of the first aspect, the camera module also includes a third magnet and a magnetic attraction component, one of the third magnet and the magnetic attraction component is arranged on the base, and the other is arranged on the second bracket, and the third magnet and the magnetic attraction component attract each other.

[0028] In the embodiment provided in the present application, the camera module includes a third magnet and a magnetic attraction component, one of which is arranged on the base, and the other is arranged on the second bracket, which can further ensure that the second bracket moves within a determined plane.

[0029] In a second aspect, an electronic device is provided, comprising a camera module as described in the first aspect or any possible implementation manner of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of an electronic device provided in an embodiment of the present application;

[0031] Figure 2 is a schematic diagram of a three-dimensional structure of a camera module provided in an embodiment of the present application;

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

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

[0034] Figure 5 is a schematic diagram of the cross-sectional structure of the first bracket and the second bracket provided in an embodiment of the present application;

[0035] Figure 6 is a schematic diagram of the separation structure of the first bracket and the first driving mechanism provided in an embodiment of the present application;

[0036] Figure 7 is a schematic diagram of the separation structure of the first bracket and the guide assembly provided in an embodiment of the present application;

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

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

[0039] Fig.10 is a schematic structural diagram of an elastic member provided in an embodiment of the present application;

[0040] Fig.11 is a schematic structural diagram of a second bracket and an elastic member provided in an embodiment of the present application;

[0041] Fig.12 It is a structural schematic diagram of a base provided in an embodiment of the present application;

[0042] Fig.13 is a schematic diagram of the separation structure of the second bracket and the base provided in an embodiment of the present application;

[0043] Fig.14 It is a schematic diagram of the separation structure of the substrate assembly provided in an embodiment of the present application. DETAILED DESCRIPTION

[0044] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0045] References to "one embodiment" or "some embodiments" etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. appearing in different places in this specification do not necessarily all refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways.

[0046] In various embodiments of the present application, the first, second, etc. are only used to indicate that multiple objects are different. For example, the first magnet and the second magnet are only used to indicate different magnets. They should not have any impact on the magnets themselves and their quantity, and the first, second, etc. mentioned above should not impose any limitations on the embodiments of the present application.

[0047] The terms "include", "comprising", "having" and variations thereof all mean "including but not limited to", unless specifically emphasized otherwise.

[0048] Figure 1 1 is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. The electronic device 100 may be an electronic device with a video or photo function, such as a mobile phone, a tablet computer, a television (or a smart screen), a laptop, a video camera, a video recorder, a camera, etc. For ease of understanding, the present application embodiment is described by taking the electronic device 100 as a mobile phone as an example.

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

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

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

[0052] It should be understood that Figure 1The installation positions of the front camera module 110 and the rear camera module 120 shown are merely illustrative, and the present application does not limit the installation positions of the camera modules. In some other embodiments, the front camera module 110 and the rear camera module 120 may also be installed at other positions on the electronic device 100. For example, the front camera module 110 may be installed in the upper middle part or the upper right part of the display screen 130. For another example, the rear camera module 120 may be installed in the upper left part or the upper right part of the back cover. In addition, Figure 1 The number of front camera modules 110 and rear camera modules 120 installed shown is also schematic. The present application may not limit the number of camera modules installed, and the electronic device 100 may include a greater or lesser number of camera modules.

[0053] Figure 2 is a schematic diagram of the overall structure of the camera module provided in the embodiment of the present application, and the camera module can be Figure 1 The rear camera in the electronic device described may also be a front camera, and the camera module may be a main camera in the camera, or may also be a telephoto camera, a periscope camera, etc., which is not limited in this application.

[0054] Figure 3 yes Figure 2 The exploded structure diagram of the camera shown in FIG. Figure 4 yes Figure 2 The schematic diagram of the cross-sectional structure of the camera module along the YZ plane is shown in FIG. Figure 3 or Figure 4 As shown, the camera module may include a base 240 (base), a first lens 231, a second lens 221, a first bracket 230 and a second bracket 220. The first lens 231 and the first bracket 230 may be arranged on the same side of the base 240, and the first lens 231 may be arranged in the first bracket 230. The second bracket 220 may also be arranged on the base 240, the second lens 221 and the first bracket 230 may be arranged in the second bracket 220, and the second lens 221 may be arranged on a side of the first bracket 230 away from the base 240. The first bracket 230 may also be called a carrier, and the second bracket 220 may also be called a frame.

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

[0056] Continue to refer Figure 3 or Figure 4 The camera module may further include a first driving mechanism 260, which may be connected between the first bracket 230 and the second bracket 220. Under the drive of the first driving mechanism 260, the first lens 231 and the first bracket 230 may move relative to the second bracket 220 along the optical axis OO' direction, which is the Z axis direction shown in the figure. The first driving mechanism 260 may also be called an auto focus (AF) driving mechanism, which adjusts the focal length of the camera module by the relative movement of the first lens 231 along the optical axis direction.

[0057] Continue to refer Figure 3 The camera module may further include a second driving mechanism 270, which may be connected to the second bracket 220 and the base 240. Under the drive of the second driving mechanism 270, the first bracket 230, the first lens 231, the second bracket 220 and the second lens 221 may move relative to the base 240 in a direction perpendicular to the optical axis. The second driving mechanism 270 may include a shape memory alloy (SMA) wire 271, which may be connected to the second bracket 220 and the base 240, respectively. When the SMA wire 271 is powered on, the SMA wire 271 contracts due to heat, thereby being able to pull the second bracket 220 to move relative to the base 240 on the XY plane. After the SMA wire 271 is powered off, the SMA wire 271 dissipates heat and cools, and the deformation is restored. The second driving mechanism 270 may also be called an OIS driving mechanism. The movement of the first lens 231 and the second lens 221 in a direction perpendicular to the optical axis can facilitate compensation for the jitter of the camera module and improve the imaging quality.

[0058] For camera modules with large sensor target areas, the module size and weight are large. SMA wire 271 is used to drive the first lens 231 and the second lens 221 to move in a direction perpendicular to the optical axis. SMA wire 271 is small in size and simple in structure. It occupies little space and weighs little. It can compress the module size and weight as much as possible to achieve a thin and light camera module. In addition, the use of SMA wire 271 can have a large driving force and load-bearing capacity. For camera modules with large target areas, the lens and bracket can be driven quickly and accurately, and a large anti-shake angle can be achieved, thereby improving the anti-shake effect and optimizing the imaging quality. The use of SMA wire 271 for driving is also not prone to magnetic interference.

[0059] The lens is divided into a first lens 231 and a 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. This can reduce the driving space required for the lens to move in the optical axis direction and can reduce the module height, which is beneficial to reducing the thickness of the electronic device. This focusing method can also be called internal focusing.

[0060] The second bracket 220 can be an integrated structure, and the first bracket 230 and the second lens 221 are jointly arranged in the second bracket 220, which can make the camera module easy to assemble, improve the structural accuracy of the lens assembly, and 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 this application can be applied to a camera module whose target surface area of ​​the image sensor is greater than or equal to 1 inch. For a camera module whose target surface area is less than 1 inch, the solution provided in this application can also be applied.

[0062] Combine the following Figures 5 to 13 The driving methods of the first lens 231 and the second lens 221 are described in detail, wherein: Figures 5 to 7 It is an AF driving scheme, that is, a scheme for driving the first lens 231 to move along the optical axis direction. Figures 8 to 13 The OIS anti-shake driving scheme is a scheme that drives the first lens 231 and the second lens 221 to move together in a direction perpendicular to the optical axis. Figures 5 to 7 The AF drive scheme is introduced.

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

[0064] For example, Figure 6 Schematic diagram of the separation structure of the first driving mechanism 260 and the first bracket 230, as shown in Figure 5 or Figure 6 As shown, a groove 233 may be provided on one side of the first bracket 230 close to the second bracket 220, and the second magnet 261 may be provided in the groove 233. The second magnet 261 may be fixed in the groove 233 by bonding.

[0065] Accordingly, see Figure 5 A slot body 223 may be provided on one side of the second bracket 220 close to the first bracket 230 . The slot body 223 and the slot body 233 may be arranged opposite to each other, and the coil 262 may be arranged in the slot body 223 .

[0066] When the camera module is automatically focusing, the coil 262 is energized to generate a magnetic field. The magnetic field generated by the coil 262 interacts with the magnetic field generated by the second magnet 261, pushing the second magnet 261 to drive the first bracket 230 to move up and down along the optical axis of the camera module, and the first lens 231 moves up and down along the optical axis with the first bracket 230 to achieve automatic focusing.

[0067] The second magnet 261 and the coil 262 may also be interchanged. The second magnet 261 may be disposed on the second bracket 220, and the coil 262 may be disposed on the first bracket 230. When the coil 262 is disposed on the second bracket 220, an electrical connection structure may be disposed on the second bracket 220 to facilitate powering the coil 262. When the coil 262 is disposed on the first bracket 230, the electrical connection structure may be disposed on the first bracket 230.

[0068] The number of the second magnets 261 can be multiple, or in other words, each first driving mechanism 260 can include multiple magnets. The overall structure formed by the multiple second magnets 261 can be arranged opposite to 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 bracket 230 and the first lens 231.

[0069] When there are multiple second magnets 261, the multiple second magnets 261 can form a Halbach array structure. In the Halbach array structure, the direction in which the N poles of some magnets point to the S poles can be set along the Z direction, and the direction in which the N poles of some magnets point to the S poles can be set along the direction on the XY plane. Magnets with different settings can be arranged alternately so that the surface of the magnet assembly facing the coil 262 has a larger magnetic field strength, so that a very small current can drive the first bracket 230 connected to the magnet assembly, reducing the driving power consumption.

[0070] When a first driving mechanism 260 includes a second magnet 261, the second magnet 261 can also constitute a Halbach array. For example, the second magnet 261 can be magnetized as an integrated whole to form different magnetizing directions at different parts of the second magnet 261, thereby forming a plurality of magnet units with different magnetizing directions inside the second magnet 261 to constitute a Halbach array.

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

[0072] During the AF movement of the first bracket 230, the camera module needs to determine the position of the first bracket 230 to determine whether the target focal length is reached. Figure 5 As shown in the structure, in some embodiments, the camera module may further include a Hall magnet 232 and a first chip 222 , and the first chip 222 and the Hall magnet 232 may be used to determine the position of the first bracket 230 .

[0073] Specifically, the Hall magnet 232 may be disposed on the first bracket 230 , the first chip 222 may be disposed on the second bracket 220 , and the first chip 222 may be disposed in the magnetic field of the Hall magnet 232 .

[0074] Exemplarily, the Hall magnet 232 can be bonded to a side of the first bracket 230 close to the second bracket 220, the first chip 222 can be bonded to a side of the second bracket 220 close to the first bracket 230, and the Hall magnet 232 and the first chip 222 can be arranged relative to each other. Alternatively, a slot can be provided on a side of the first bracket 230 close to the second bracket 220, and the Hall magnet 232 can be arranged in the slot. Similarly, a slot can also be provided on one side of the second bracket 220, and the first chip 222 can be arranged in the slot to make the structure of the first chip 222 and the Hall magnet 232 more stable.

[0075] It should be understood that the Hall magnet 232 shown in the figure is a rectangular parallelepiped structure, and the Hall magnet 232 can also be an arc-shaped or other structural form, which is not limited in this application. The Hall magnet 232 and the first chip 222 can also be staggered, and the setting positions of the Hall magnet 232 and the first chip 222 can be adjusted according to the shape structure of the first bracket 230 and the second bracket 220, so that the first chip 222 can detect the position change of the Hall magnet 232.

[0076] A Hall sensor may be integrated on the first chip 222, and the Hall sensor may be used to detect the magnitude of the magnetic field of the Hall magnet 232. When the first bracket 230 moves along the optical axis under the driving action of the first driving mechanism 260, the position of the Hall magnet 232 changes, and the magnitude of the magnetic field of the Hall magnet 232 detected by the first chip 222 may change accordingly. According to the magnitude of the detected magnetic field, the first chip 222 may determine the position of the first bracket 230, and then determine whether the position to which the first bracket 230 moves is the position corresponding to the target focal length. When it is determined that the first bracket 230 has reached the target position, the first chip 222 may stop driving the first bracket 230, and when it is determined that the first bracket 230 has not reached the target position, the first bracket 230 may continue to be driven to move.

[0077] In order to improve the directionality and stability of the first bracket 230 during AF movement, the camera module may further include a guide component. Figure 7 Schematic diagram of the separation structure of the first bracket 230 and the guide assembly, combined with reference Figure 5 or Figure 7 The guide assembly may include a slide bar 224 , the axial direction of the slide bar 224 may be parallel to the optical axis direction, and the slide bar 224 may be fixedly connected to the second bracket 220 .

[0078] Exemplarily, the second bracket 220 may include a slot 225. When the slide bar 224 is a cylindrical structure as shown, the slot 225 may be an arc-shaped structure to increase the contact area between the slide bar 224 and the slot 225, so that the slide bar 224 can be stably connected to the second bracket 220. The slide bar 224 can be fixedly connected to the slot 225 by bonding. When the first bracket 230 is sleeved in the second bracket 220, the slot 225 can be arranged on one side of the slide bar 224 close to the second magnet 261.

[0079] Accordingly, continue to refer to Figure 5 or Figure 7 The first bracket 230 may include a slide groove 234 , which may extend along the optical axis direction, at least a portion of the slide rod 224 is disposed in the slide groove 234 , and the slide rod 224 may be slidably connected to the first bracket 230 through the slide groove 234 .

[0080] When the sliding rod 224 is a cylindrical structure, the sliding groove 234 can be an arc-shaped structure, so that the other parts of the sliding rod 224 except the part in contact with the groove body 225 can be arranged in the sliding groove 234, and there can be a contact surface between the sliding rod 224 and the sliding groove 234, and the sliding groove 234 can slide on the sliding rod 224 to facilitate positioning of the sliding process of the first bracket 230.

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

[0082] In some embodiments, the slide groove 234 can penetrate the first bracket 230 along the optical axis direction, and accordingly, the slide rod 224 can extend from one end of the first bracket 230 away from the base 240 to one end of the first bracket 230 close to the base 240 to increase the sliding stroke of the first bracket 230.

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

[0084] The number of the slide bars 224 may be one or more. When the number of the slide bars 224 is multiple, the multiple slide bars 224 may be arranged at intervals. The multiple slide bars 224 may also be evenly distributed on the periphery of the first bracket 230. Accordingly, the number of the slide grooves 234 may also be one or more, and the positions of the multiple slide grooves 234 may respectively correspond to the positions of the multiple slide bars 224. Providing multiple slide grooves 234 and slide bars 224 can make the movement of the first bracket 230 more stable.

[0085] In some embodiments, see Figure 5 or Figure 7 As shown in the structure, the guide assembly may further include a first magnet 235. Accordingly, the first bracket 230 may include a first slot 236. The first magnet 235 may be disposed in the first slot 236. The slide bar 224 and the first magnet 235 may attract each other.

[0086] In this example, the material of the slide bar 224 may be a magnetic metal material, or the surface of the slide bar 224 may be coated with a magnetic material, so that the slide bar 224 can attract the first magnet 235. The contact area between the first bracket 230 and the slide bar 224 may be an area of ​​the slide bar 224 close to the first magnet 235.

[0087] Corresponding to the setting of the slide groove 234 and the slide rod 224, the first groove body 236 can also extend along the optical axis direction, and the first magnet 235 can be set in the first groove body 236 by bonding or the like, for example, bonding to the inner wall of the first groove body 236 through the adhesive 237 shown in the figure.

[0088] In some embodiments, the first magnet 235 may be disposed on a side of the slide bar 224 away from the second magnet 261. Figure 5 or Figure 7 The second magnet 261 and the first magnet 235 are arranged along the circumferential direction of the first bracket 230, and can be respectively arranged on both sides of the slide bar 224. The second magnet 261 and the first magnet 235 are arranged at intervals to 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 bar 224.

[0089] In some embodiments, during the sliding of the first bracket 230 relative to the slide bar 224 along the optical axis direction, along the line direction (parallel to the XY plane direction) between the first magnet 235 and the slide bar 224, the projection of the first magnet 235 on the slide bar 224 overlaps with at least a portion of the slide bar 224, so that the first magnet 235 and the slide bar 224 can maintain mutual attraction during the entire sliding process of the first bracket 230. Exemplarily, the first magnet 235 can extend from one end of the first bracket 230 close to the base 240 to one end of the first bracket 230 away from the base 240, and accordingly, the first slot 236 can also extend from one end of the first bracket 230 close to the base 240 to one end of the first bracket 230 away from the base 240.

[0090] The slide bar 224 and the first magnet 235 attract each other. When the first bracket 230 moves along the optical axis driven by the interaction force between the magnet and the coil 262, the first bracket 230 can abut against the slide bar 224, so as to play a positioning role in the sliding of the first bracket 230, further ensuring that the first bracket 230 moves along the axial direction of the slide bar 224, and reducing the tilt and shaking of the first bracket 230 during the sliding process. In addition, the second magnet 261 is arranged on the first bracket 230, and the slide bar 224 is fixed on the second bracket 220. The second magnet 261 and the slide bar 224 attract each other. When the first bracket 230 moves in a direction perpendicular to the optical axis, under the action of the magnetic attraction, 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 achieve OIS anti-shake.

[0091] Combined with the above Figures 5 to 7 The driving principle and guiding method of the first driving mechanism 260 are introduced. Figures 8 to 13 The OIS anti-shake driving solution is introduced.

[0092] Figure 8 2 is a schematic diagram of the separated structure of the second driving mechanism 270, the base 240 and the second bracket 220, and is the structure observed from the bottom of the module, that is, the structure observed when looking at the above structure from the substrate assembly 250. Figure 8 As shown, the second driving mechanism 270 may include an SMA wire 271 , which may be disposed on a side of the base 240 away from the second bracket 220 , and one end of the SMA wire 271 may be connected to the second bracket 220 , and the other end may be connected to the base 240 .

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

[0094] The number of the SMA wires 271 may be multiple, for example, four as shown in the figure, including SMA wires 271A to 271D, and the multiple SMA wires 271 may be arranged along the circumferential direction of the base 240. Correspondingly, the number of the connecting parts 220B may also be multiple, for example, two as shown in the figure, and the two connecting parts 220B may be arranged along the diagonal direction of the base 240.

[0095] As described above, the SMA wire 271 can shrink when energized, thereby pulling the second bracket 220 to move in the XY plane. Furthermore, 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 of the first magnet 235 and the slide bar 224. 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 example described above, when the second bracket 220 moves in the XY plane, the magnetic attraction between the first magnet 235 and the slide rod 224 drives the first bracket 230 to move synchronously. The second bracket 220 and the first bracket 230 may also contact each other, and the first bracket 230 is driven to move synchronously by the pushing force of the second bracket 220 on the first bracket 230.

[0097] For example, continue to refer to Figure 5The first bracket 230 may include a third main body 230A and an extension 230B. The extension 230B may be provided on a side of the third main body 230A close to the second bracket 220, and the extension 230B may contact 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 may push the first bracket 220 to move synchronously through the contact surface between the first bracket 230 and the second bracket 220. The number of the extension 230B may be multiple, and the multiple extensions 230B may be distributed at intervals on the periphery of the third main body 230A. When the first bracket 230 is provided with a first slot 236, the first slot 236 may be opened on the extension 230B, and the slot 233 may also be opened on the extension 230B.

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

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

[0100] Continue to refer Figure 8 The claws 272A and 272B may be referred to as first claws 272 , the claws 273A and 273B may be referred to as second claws 273 , and the number of the SMA wires 271 may be four, including the illustrated SMA wires 271A to 271D.

[0101] The first clamping claw 272 may include a first fixing portion 2721 and a second fixing portion 2722, wherein the first fixing portion 2721 may be used to connect with the second bracket 220, and the second fixing portion 2722 may be used to connect with the SMA wire 271. Two adjacent SMA wires 271 may share one movable clamping claw, and furthermore, one first clamping claw 272 may have two second fixing portions 2722, and the two second fixing portions 2722 may be respectively disposed on both sides of the first fixing portion 2721.

[0102] For example, the SMA wire 271A and the SMA wire 271D may share a claw 272A, and the claw 272A may include one fixing portion 2721A and two fixing portions 2722A, the two fixing portions 2722A are respectively disposed on both sides of the fixing portion 2721A, and are respectively connected to the SMA wire 271A and the SMA wire 271D, and the fixing portion 2721A is connected to the second bracket 220. Similarly, the SMA wire 271B and the SMA wire 271C may share a claw 272B, and the claw 272B may include one fixing portion 2721B and two fixing portions 2722B, the two fixing portions 2722B are respectively disposed on both sides of the fixing portion 2721B, and are respectively connected to the SMA wire 271B and the SMA wire 271C, and the fixing portion 2721B is connected to the second bracket 220.

[0103] Similar to the structure of the first claw 272, the second claw 273 may include a third fixing portion 2731 and a fourth fixing portion 2732, wherein the third fixing portion 2731 may be used to connect to the base 240, and the fourth fixing portion 2732 may be used to connect to the SMA wire 271. Two adjacent SMA wires may also share one fixing claw, and two fourth fixing portions 2732 may be provided on one second claw 273, and the two fourth fixing portions 2732 may be provided on both sides of the third fixing portion 2731, respectively.

[0104] For example, the SMA wire 271A and the SMA wire 271B may share a claw 273A, and the claw 273A may include a fixed portion 2731A and two fixed portions 2732A, the two fixed portions 2732A are respectively disposed on both sides of the fixed portion 2731A, and are respectively connected to the SMA wire 271A and the SMA wire 271B, and the fixed portion 2731A is connected to the base 240. Similarly, the SMA wire 271C and the SMA wire 271D may share a claw 273B, and the claw 273B may include a fixed portion 2731B and two fixed portions 2732B, the two fixed portions 2732B are respectively disposed on both sides of the fixed portion 2731B, and are respectively connected to the SMA wire 271C and the SMA wire 271D, and the fixed portion 2731B is connected to the base 240.

[0105] As another example, the SMA wires 271 may only share the movable jaws but not the fixed jaws. In this example, each second jaw 273 may only include one fourth fixing portion 2732 , and the fourth fixing portion 2732 and the third fixing portion 2731 may form an “L”-shaped structure.

[0106] For example, Fig. 9 The second driving mechanism 270 shown in the figure, the second claw 273 may include a claw 273A, a claw 273B, a claw 273C and a claw 273D, and the SMA wire 271A can be connected to the base 240 through the claw 273A, wherein the fixed part 2732A of the claw 273A can be connected to the SMA wire 271A, and the fixed part 2731A of the claw 273A can be connected to the base 240. Similarly, the SMA wire 271B can be connected to the base 240 through the claw 273B, wherein the fixed portion 2732B of the claw 273B can be connected to the SMA wire 271B, and the fixed portion 2731B of the claw 273B can be connected to the base 240; the SMA wire 271C can be connected to the base 240 through the claw 273C, wherein the fixed portion 2732C of the claw 273C can be connected to the SMA wire 271C, and the fixed portion 2731C of the claw 273C can be connected to the base 240; the SMA wire 271D can be connected to the base 240 through the claw 273D, wherein the fixed portion 2732D of the claw 273D can be connected to the SMA wire 271D, and the fixed portion 2731D of the claw 273D can be connected to the base 240.

[0107] In this example, the structure of the first claw 272 and the connection method between the SMA wire 271 and the first claw 272 can be the same as Figure 8 The examples described are similar and will not be repeated here.

[0108] It should be understood that the multiple SMA wires 271 may only share the fixed claw but not the movable claw, or the multiple SMA wires 271 may share neither the fixed claw nor the movable claw, and the present application does not limit this.

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

[0110] The first claw 272 and the second claw 273 may be made of metal material to facilitate transmission of electrical signals to the SMA wire 271 .

[0111] The SMA wire 271 is connected to the second bracket 220 and the base 240 through the first claw 272 and the second claw 273, respectively, so that the connection between the SMA wire 271 and the second bracket 220 and the base 240 is more stable, so that the second bracket 220 can be driven to move relative to the base 240 more stably. In addition, the electrical connection of the SMA wire 271 can be more stable through the claw connection.

[0112] Figure 8 In the described example, the SMA wire 271 and the claw are arranged on the side of the base 240 away from the second bracket 220. In the embodiment provided in the present application, the SMA wire 271 and the claw can also be arranged between the base 240 and the second bracket 220. When the SMA wire 271 and the claw are arranged between the base 240 and the second bracket 220, the first claw 272 can be connected to the first main body 220A of the second bracket 220. Among them, the side of the first claw 272 close to the second bracket 220 is connected to the second bracket 220, and the side of the second claw 273 close to the base 240 is connected to the base 240, so that the first claw 272 and the second claw 273 can be connected to both the second bracket 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 bracket 220, the camera module may also include an elastic member 274, one end of which may be connected to the second bracket 220, and the other end of which may be connected to the base 240.

[0114] For example, Fig.10 is a schematic diagram of the structure of the elastic member 274, Fig.11 The elastic member 274 is provided on the second bracket 220. Fig.10 and Fig.11 , the elastic member 274 may include an elastic arm 2742 and a fixed terminal 2741, and the elastic arm 2742 and the fixed terminal 2741 may form an L-shaped structure. The number of the fixed terminals 2741 may be multiple, for example, the fixed terminals 2741A and 2741B shown in the figure may be included, wherein the fixed terminal 2741A may be used to connect to the base 240, and the fixed terminal 2741B may be used to connect to the second bracket 220, and one elastic member 274 may include two fixed terminals 2741B, and the two fixed terminals 2741B may be fixedly connected to two adjacent sides of the first bracket 230 respectively. The elastic arm 2742 may be located between the fixed terminal 2741A and the fixed terminal 2741B, and the elastic arm may be elastically deformed.

[0115] When the SMA wire 271 is in a contracted state, the SMA wire 271 pulls the second bracket 220 to move. 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 in a stretched state, that is, the elastic arm 2742 can be in a stretched state. Then, after the SMA wire 271 is powered off, the SMA wire 271 recovers its deformation, the pulling force from 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 recovers its deformation, and pulls the second bracket 220 back to its initial position.

[0116] For example, Fig.12 is a schematic diagram of the structure of the base 240, such as Fig.12 As shown, the base 240 may include a second main body 240A and a protrusion 240B, and the protrusion 240B may be disposed on a side of the second main body 240A close to the second bracket 220. When the second bracket 220 is disposed on the base 240, the protrusion 240B may be located at the periphery of the second bracket 220, and the structure of the second bracket 220 may avoid the protrusion 240B accordingly, so that the second bracket 220 can be supported on the base 240.

[0117] The elastic member 274 may be disposed on a side of the second bracket 220 away from the base 240 , and the elastic member 274 may be connected to the protruding portion 240B, and the elastic member 274 may be connected to the protruding portion 240B via a fixed terminal 2741A.

[0118] The elastic member 274 is disposed on a side of the first bracket 230 away from the base 240, so that the elastic member 274 and the SMA wire 271 are spaced apart from each other, preventing the telescopic movement of the SMA wire 271 from interfering with the telescopic movement of the elastic member 274. The base 240 includes a second main body 240A and a protruding portion 240B, which can facilitate the elastic member 274 to be connected to both 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.

[0119] The second main body 240A may be a rectangular frame structure, and the number of the protrusions 240B may be two, which are respectively arranged on two diagonal corners of the second main body 240A, and the fixed terminals 2741A of the two elastic members 274 may be respectively connected to the two protrusions 240B.

[0120] In some embodiments, the two elastic members 274 may be a centrally symmetrical structure, or in other words, the two elastic members 274 may be centrally symmetrical about the optical axis of the camera module.

[0121] When the two elastic members 274 are of a centrally symmetrical structure, when the second bracket 220 moves relative to the base 240, the deformation of the elastic arms 2742 of the two elastic members 274 is the same, which can further balance and buffer the force on the second bracket 220, making the movement of the second bracket 220 on the XY plane smoother.

[0122] The number of elastic members 274 shown in the figure is two, and the number of the elastic members 274 can also be more. For example, the L-shaped elastic member 274 shown in the figure can be divided into two independent linear structures to form four elastic members, and the four elastic members are centrally symmetrical about the optical axis. For another example, an L-shaped elastic member can be respectively provided at the four corners of the second bracket 220.

[0123] When the second bracket 220 performs anti-shake motion relative to the base 240, there is friction between the second bracket 220 and the base 240, and the friction easily affects the imaging effect, for example, causing a slight jitter in the imaging picture. Furthermore, in some embodiments, the camera module may further include a ball 242, which may be disposed between the base 240 and the second bracket 220 to reduce the friction between the second bracket 220 and the base 240.

[0124] Fig.13 2 is a schematic diagram of the separation structure of the second bracket 220 and the base 240, and is the structure observed when looking at the second bracket 220 and the base 240 from the top of the second bracket 220, such as Fig.13 As shown, the camera module may further include a first groove 241 , and the ball bearing 242 may be disposed in the first groove 241 . When the second bracket 220 is disposed on the base 240 , the second bracket 220 may be supported on the ball bearing 242 .

[0125] The second bracket 220 is supported on the ball 242, and the contact between the second bracket 220 and the ball 242 is point contact. When the second bracket 220 moves relative to the base 240, the ball 242 can roll freely in the first groove 241, thereby reducing the friction between the second bracket 220 and the base 240.

[0126] The number of the first grooves 241 can be multiple, and the multiple first grooves 241 can be dispersed on the base 240. The multiple first grooves 241 can also be symmetrically distributed on the base 240. A plurality of balls 242 can be disposed in each first groove 241, and the sizes of the multiple balls 242 can be the same, so that the movement of the second bracket 220 is more stable.

[0127] A groove may also be provided on one side of the second bracket 220 close to the base 240. The position of the groove on the second bracket 220 may correspond to the position of the first groove 241. When the second bracket 220 is set on the base 240, the plurality of balls 242 may be accommodated in both the first groove 241 and the groove of the second bracket 220.

[0128] It should be understood that, as described above, the base 240 may include a second body portion 240A and a protrusion 240B, the first groove 241 may be disposed on the second body portion 240A, and the second bracket 220 may also be disposed on the second body portion 240A.

[0129] In some embodiments, the camera module may further include a third magnet 245 and a magnetic attraction member. The third magnet 245 may be disposed on the base 240, and the magnetic attraction member may be disposed on the second bracket 220. The third magnet 245 and the magnetic attraction member may attract each other (the magnetic attraction member is not shown in the figure, and the magnetic attraction member may be disposed opposite to the third magnet 245 along the optical axis). Under the magnetic attraction of the third magnet 245 and the magnetic attraction member, the second bracket 220 can be further ensured to move within a determined plane, thereby improving the stability of the movement of the second bracket 220.

[0130] Accordingly, the base 240 may be provided with a second groove 244, and the third magnet 245 may be provided in the second groove 244. For example, the third magnet 245 may be bonded in the second groove 244. Similarly, a groove may be provided on one side of the second bracket 220 close to the base 240, and the groove may be arranged opposite to the second groove 244, and the magnetic attraction member may be arranged in the groove.

[0131] The third magnet 245 and the magnetic member may also be interchanged. The third magnet 245 may be disposed on the second bracket 220 , and the magnetic member may be disposed on the base 240 . In this example, the magnetic member may be disposed in the second groove 244 .

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

[0133] Fig.14 is a schematic diagram of the separation structure of the substrate assembly 250, such as Fig.14As shown, the substrate assembly 250 may include a substrate 251, and the substrate 251 may include a printed circuit board (PCB), and the PCB may be used to provide electrical signals for the first drive mechanism 260 and the second drive mechanism 270 and other structures. The substrate assembly 250 may be electrically connected to the external circuit of the camera module through a first flexible printed circuit (FPC) to transmit electrical signals.

[0134] Exemplarily, a first connection line may be provided in the second bracket 220, the first connection line may be electrically connected to the coil 262, and the first connection line may be electrically connected to the substrate 251. The first connection line may be formed in the second bracket 220 by embedding metal by insert molding (IM). The first connection line may be connected to the substrate 251 through a second FPC, the second FPC may be provided between the second bracket 220 and the substrate 251, and may be provided at the periphery of the base 240.

[0135] The first connecting wire and the second FPC are used to electrically connect the coil 262 to the substrate 251, so as to power the coil 262 and drive the first bracket 230 to move along the optical axis relative to the second bracket 220. The first connecting wire is formed in the second bracket 220 by IM, and the structural strength of the second bracket 220 can also be improved.

[0136] Exemplarily, a second connection line may be provided in the base 240, and the second connection line may be electrically connected to the SMA line 271. When the second driving mechanism 270 includes a first claw 272 and / or a second claw 273, the second connection line may be electrically connected to the SMA line 271 through the claw, so as to energize the SMA line 271 to drive the second bracket 220 to move relative to the base 240 in a direction perpendicular to the optical axis. Similar to the first connection line, the second connection line may also be formed in the base 240 by IM. The second connection line may be electrically connected to the substrate 251 by a lead, or the second connection line may be electrically connected to the substrate 251 by the second FPC. The second connection line is buried in the base 240 by IM, and the structural strength of the base 240 may also be improved.

[0137] The second connecting line can also be electrically connected to 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 to 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 an electrical signal for the SMA wire 271. The elastic member 271 and the substrate 251 can also be electrically connected through the above-mentioned second FPC. The present application does not limit the specific electrical connection circuits in the camera module, but only needs to be able to provide electrical signals to the SMA wire 271 and enable the camera module to achieve AF movement, OIS movement, imaging and other operations.

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

[0139] Continue to see Fig.14 In order to enable the camera module to achieve imaging, the substrate assembly 250 may also include a filter 253 and an image sensor 255. The filter 253 and the image sensor 255 may be arranged on the substrate 251, and the filter 253 may be arranged on a side of the image sensor 255 close to the first lens 231.

[0140] The filter 253 can be used to improve the effective resolution and color reproduction of the image sensor 255. Exemplarily, the filter 253 can be an infrared filter, which can filter out infrared light in the ambient light and pass visible light. Alternatively, the filter 253 can be a dual-bandpass filter, which can select two bands in the ambient light to pass, such as visible light and infrared light, or visible light and ultraviolet light, or ultraviolet light and infrared light.

[0141] Exemplarily, the material of the filter 253 may be blue glass, which is a transparent glass material with a blue hue, and is formed by adding components such as cobalt oxide (CoO) or copper oxide (CuO) to the glass.

[0142] The filter 253 may be fixedly connected to the filter frame 254 and disposed on the substrate 251 through the filter frame 254 .

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

[0144] To protect the internal components of the camera module, continue to refer to Figure 2 or Figure 3 In the structure shown, the camera module may further include a housing 210 (case), and the housing 210 may be sleeved outside the second bracket 220 .

[0145] It should be understood that the embodiment of the present application divides the lens assembly into two lens groups, namely the first lens 231 and the second lens 221. The camera module may also include more lens groups, for example, three lens groups or four lens groups, to further reduce the height of the camera module. When the camera module includes more lens groups, the third lens and the fourth lens may be arranged on the side of the first lens 231 close to the base 240. The third lens and the fourth lens may be arranged in the second bracket 220 and may be arranged separately from the first lens 231, that is, the third lens and the fourth lens may perform OIS movement together with the first lens 231 and the second lens 221 without performing AF movement. Alternatively, the third lens and the fourth lens may also be arranged separately from the first lens 231 and the second lens 221, and the third lens and the fourth lens neither perform OIS movement nor AF movement. The third lens and the fourth lens may be used to change the optical performance of the module and improve the imaging quality.

[0146] An embodiment of the present application also provides an electronic device, which may include the camera module described in the above embodiment.

[0147] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A camera module, characterized in that: include: Base (240); a first lens (231) and a first bracket (230), wherein the first lens (231) is disposed in the first bracket (230) and connected to the first bracket (230), and the first lens (231) and the first bracket (230) are disposed on the same side of the base (240); a second lens (221) and a second bracket (220), wherein the second lens (221) and the first bracket (230) are arranged in the second bracket (220), and the second lens (221) is connected to the second bracket (220), and the second lens (221) is arranged on a side of the first bracket (230) away from the base (240); a first driving mechanism (260), the first driving mechanism (260) being connected to the first bracket (230) and the second bracket (220) respectively, and under the drive of the first driving mechanism (260), the first lens (231) moves relative to the second bracket (220) along the optical axis direction of the camera module; A second driving mechanism (270), wherein the second driving mechanism (270) comprises a shape memory alloy SMA wire (271), wherein the SMA wire (271) is respectively connected to the second bracket (220) and the base (240), and under the drive of the second driving mechanism (270), the first lens (231) and the second lens (221) move relative to the base (240) along a direction perpendicular to the optical axis.

2. The camera module according to claim 1, characterized in that: The camera module also includes a sliding rod (224), the sliding rod (224) being fixedly connected to the second bracket (220), and the axial direction of the sliding rod (224) being parallel to the optical axis direction; The first bracket (230) comprises a slide groove (234), the slide groove (234) extends along the optical axis direction, and at least a portion of the slide rod (224) is disposed in the slide groove (234).

3. The camera module according to claim 2, characterized in that: The camera module further comprises a first magnet (235), the first bracket (230) comprises a first slot (236), the first magnet (235) is arranged in the first slot (236), and the sliding rod (224) and the first magnet (235) attract each other.

4. The camera module according to claim 2, characterized in that: 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 bracket (230), and the other is arranged on the second bracket (220); the second magnet (261) and the coil (262) are arranged opposite to each other, so that under the interaction between the second magnet (261) and the coil (262), the first bracket (230) moves along the optical axis direction.

5. The camera module according to claim 4, characterized in that: The camera module includes a first magnet (235), the first bracket (230) includes a first slot (236), the first magnet (235) is arranged in the first slot (236), the sliding rod (224) and the first magnet (235) attract each other, and along the circumferential direction of the first bracket (230), the first magnet (235) and the second magnet (261) are respectively arranged on both sides of the sliding rod (224).

6. The camera module according to any one of claims 1 to 5, characterized in that: The SMA wire (271) is arranged on a side of the base (240) away from the first bracket (230); The second bracket (220) includes a first main body (220A) and a connecting portion (220B), wherein the connecting portion (220B) is arranged on a side of the first main body (220A) close to the base (240), and the SMA wire (271) is connected to the connecting portion (220B).

7. The camera module according to any one of claims 1 to 6, characterized in that: The second driving mechanism (270) further comprises a first claw (272), the SMA wire (271) is connected to the second bracket (220) via the first claw (272), and / or, The second driving mechanism (270) further comprises a second clamping claw (273), and the SMA wire (271) is connected to the base (240) via the second clamping claw (273).

8. The camera module according to any one of claims 1 to 7, characterized in that: The camera module also includes an elastic member (274), one end of the elastic member (274) is connected to the second bracket (220), and the other end is connected to the base (240); When the SMA wire (271) is in a contracted state, the elastic member (274) is in a stretched state.

9. The camera module according to claim 8, characterized in that: The elastic member (274) is arranged on a side of the second bracket (220) away from the base (240); The base (240) includes a second main body (240A) and a protruding portion (240B), wherein the protruding portion (240B) is arranged on a side of the second main body (240A) close to the second bracket (220), and the protruding portion (240B) is located on the periphery of the second bracket (220), and the elastic member (274) is connected to the protruding portion (240B).

10. The camera module according to claim 8 or 9, characterized in that: The elastic members (274) are multiple in number, and the multiple elastic members (274) are distributed in a centrally symmetrical structure with respect to the optical axis of the camera module.

11. The camera module according to any one of claims 1 to 10, characterized in that: A first groove (241) is provided on one side of the base (240) close to the second bracket (220), and the camera module further comprises a ball (242), wherein the ball (242) is provided in the first groove (241), and the second bracket (220) is supported on the ball (242).

12. The camera module according to any one of claims 1 to 11, characterized in that: The camera module also includes a third magnet (245) and a magnetic attraction component, one of the third magnet (245) and the magnetic attraction component is arranged on the base (240), and the other is arranged on the second bracket (220), and the third magnet (245) and the magnetic attraction component attract each other.

13. An electronic device, characterized in that: Comprising a camera module as described in any one of claims 1 to 12.

Images