Camera module and electronic device

Abstract

The application provides a camera module and an electronic device, relates to the technical field of cameras, and can solve the problem that the camera module is prone to shaking under the action of external force. The camera module comprises a lens assembly, a first processor and a driving module; a magnetic assembly in the driving module is fixed on the periphery of a lens holder, and the magnetic assembly and the lens holder are located in a shell; a first circuit board is fixed on the outer side of the shell, an electromagnetic assembly is fixed on the side of the first circuit board facing the shell, and the first circuit board is electrically connected with the electromagnetic assembly and the first processor; the lens holder is used for fixing the lens assembly; if the first processor detects that the lens assembly switches the focusing mode, the first processor controls the input of the power-on current in the first direction or the second direction to the first circuit board, and under the action of the magnetic repulsion or magnetic attraction of the electromagnetic assembly, the magnetic assembly can drive the lens holder and the lens assembly to move in parallel between the bottom of the shell and the top of the shell by a first distance, and the first direction is opposite to the second direction.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of camera, and particularly relates to a camera module and electronic equipment. BACKGROUND

[0002] The camera module is an important component for realizing the photographing function of electronic equipment such as mobile phones, cameras and tablet computers. Generally, the camera module comprises a lens assembly, a driving module and an image sensor arranged in a shell. The driving module can drive the lens assembly to move, so as to adjust the distance between the lens assembly and the image sensor, change the image distance, and make the camera module obtain a clear image.

[0003] The driving module generally comprises an upper spring plate, a coil, a permanent magnet and a lower spring plate. The outer edges of the upper spring plate and the lower spring plate are fixed on the shell, the middle parts of the upper spring plate and the lower spring plate are connected with the lens assembly, and the coil is arranged at the periphery of the lens assembly. Through the interaction force generated between the coil and the permanent magnet under the electrified state and the elastic force of the upper and lower spring plates, the lens assembly can be controlled to move in a defined direction, so as to realize the automatic focusing function.

[0004] The upper spring plate and the lower spring plate in the driving module are both components with large elasticity. During the process of moving and photographing, the user will shake the electronic equipment, and the upper and lower spring plates will also vibrate, thereby affecting the accuracy of the automatic focusing of the camera module. SUMMARY

[0005] The application provides a camera module and electronic equipment, which solves the problem that the spring plate type driving module of the existing camera module is easy to vibrate under external force.

[0006] To achieve the above purpose, the application adopts the following technical scheme:

[0007] In a first aspect, the application provides a camera module, characterized in that the camera module comprises a lens assembly, a first processor and a driving module; the driving module comprises a shell, a lens holder, a magnetic assembly, a first circuit board and an electromagnetic assembly; the magnetic assembly is fixed on the periphery of the lens holder, and the magnetic assembly and the lens holder are located in a containing cavity of the shell; the first circuit board is fixed on the outer side of the shell away from the lens holder, and the electromagnetic assembly is fixed on the side of the first circuit board facing the shell, and the first circuit board is electrically connected with the electromagnetic assembly and the first processor respectively; the lens holder, the shell and the first circuit board are all hollow structures, and the hollow structures are used for fixing the lens assembly; if the first processor detects that the focusing mode of the lens assembly is switched from a first focusing mode to a second focusing mode, the first processor controls to input a power current in a first direction to the first circuit board, the magnetic assembly drives the lens holder and the lens assembly to move in parallel by a first distance in a direction away from the electromagnetic assembly from the bottom of the shell under the magnetic repulsion of the electromagnetic assembly, and then the top of the magnetic assembly abuts against the top of the shell; if the first processor detects that the focusing mode of the lens assembly is switched from the second focusing mode to the first focusing mode, the first processor controls to input a power current in a second direction to the first circuit board, the magnetic assembly drives the lens holder and the lens assembly to move in parallel by the first distance in a direction close to the electromagnetic assembly from the top of the shell under the magnetic attraction of the electromagnetic assembly, and then the bottom of the magnetic assembly abuts against the bottom of the shell, and the first direction is opposite to the second direction.

[0008] In the camera module provided in the embodiments of the application, the magnetic assembly and the lens holder fixedly connected with the magnetic assembly are located inside the shell, the electromagnetic assembly is fixed outside the shell, and when the first processor detects that the current focusing mode of the lens assembly is switched to the first focusing mode or the second focusing mode, the first processor can control to input a current in a direction corresponding to the current focusing mode to the first circuit board, so that the magnetic attraction and the magnetic repulsion are generated between the electromagnetic assembly and the magnetic assembly, the magnetic assembly drives the lens holder and the lens assembly to move in parallel in a direction close to the electromagnetic assembly to the bottom of the containing cavity under the magnetic attraction, or the magnetic assembly drives the lens holder and the lens assembly to move in parallel in a direction away from the electromagnetic assembly to the top of the containing cavity under the magnetic repulsion, so that the two-stage focusing function is realized, the containing cavity of the shell can limit the moving distance of the magnetic assembly and the lens holder, and the lens assembly moves in parallel under the magnetic force of the electromagnetic assembly and the magnetic assembly to realize focusing, and is not easy to shake under the influence of external force.

[0009] In a possible design, the first distance is a height difference between the containing cavity and the magnetic assembly; the first distance is expressed as:

[0010]

[0011] Wherein, L represents the first distance, f represents the focal length of the lens of the lens assembly, u1 represents the focusing distance when the lens assembly is in the second focusing mode, and u2 represents the focusing distance when the lens assembly is in the first focusing mode.

[0012] Based on the optional design, the difference between the image distance when the lens assembly is in the macro mode and the image distance when the lens assembly is in the tele mode is equal to the first distance of the parallel movement of the magnetic assembly and the lens holder in the accommodating cavity when the camera module switches the focusing mode, and the height difference between the accommodating cavity and the magnetic assembly determines the first distance of the movement of the magnetic assembly and the lens holder in the shell, therefore, according to the different focal lengths of the lenses in different lens assemblies, the first distance of the movement of the magnetic assembly and the lens holder in the accommodating cavity along the optical axis direction when the lens assembly switches the focusing mode can be determined based on the above formula, and then the height of the accommodating cavity of the shell is set according to the maximum movement distance and the height of the magnetic assembly, so that the shell with adaptive height is set for different lens assemblies.

[0013] In a possible design, the magnetic assembly includes at least two permanent magnets, and the at least two permanent magnets are symmetrically distributed around the periphery of the lens holder; the electromagnetic assembly includes at least two electromagnets, and the electromagnets correspond to the permanent magnets one by one; one magnetic pole end of the permanent magnet is arranged opposite to one end of the corresponding electromagnet.

[0014] Based on the optional design, the electromagnets in the electromagnetic assembly correspond to the permanent magnets in the magnetic assembly one by one, by simultaneously changing the direction of the input current in all the electromagnets in the magnetic assembly, the same interaction force can be generated between each electromagnet and the corresponding permanent magnet, so as to drive all the permanent magnets in the magnetic assembly to move along the optical axis direction of the lens assembly. In addition, the plurality of permanent magnets are symmetrically distributed around the periphery of the lens holder, so that the lens holder and the lens assembly can move smoothly along the optical axis direction, and the inclination of the lens holder and the lens assembly relative to the shell during the movement due to uneven force can be avoided.

[0015] In a possible design, the shell includes: an upper cover; the upper cover includes: an upper substrate and an extension part extending from the edge of the upper substrate to the direction of the first circuit board; the upper substrate is a hollow structure, and the material of the upper substrate is a soft magnetic material.

[0016] Based on the possible design, when the movable assembly moves to the top of the shell, the current in the coil of the electromagnet can be disconnected, and by the magnetic attraction force between one magnetic pole end of the permanent magnet facing away from the electromagnet and the upper substrate, the magnetic assembly and the lens holder can be fixed at the top of the accommodating cavity of the shell, so that the lens assembly can be kept in the second focusing mode, thereby saving electric energy.

[0017] In a possible design, the material of the extension part is a non-magnetic material.

[0018] Based on the possible design, when the upper cover is covered on the base, the extension part of the upper cover is located at the side end of the permanent magnet, and the extension part made of non-magnetic material can avoid affecting the magnetic interaction force between the permanent magnet and the electromagnet.

[0019] In a possible design, the shell further includes: a base, and an upper cover covered on the base and forming a containing cavity with the base; the base includes: a lower base plate and a surrounding edge extending from the edge of the lower base plate to the upper base plate; the lower base plate is a hollow structure, and the first circuit board is fixed to the side of the lower base plate away from the lens holder; and the outer side wall of the surrounding edge is provided with an avoiding slot for clamping the extension part.

[0020] Based on the optional design, when the upper cover is covered on the base, the extension part of the upper cover can be inserted into and clamped in the avoiding slot of the base, so as to improve the firmness of the upper cover and the base.

[0021] In a possible design, the lower base plate is provided with a through hole corresponding to each electromagnet; one end of the electromagnet is opposite to one magnetic pole end of the corresponding permanent magnet through the through hole, and the other magnetic pole end of the permanent magnet is opposite to the upper base plate.

[0022] Optionally, the electromagnet is located in the corresponding through hole.

[0023] Based on the possible design, one end of the electromagnet can be opposite to one magnetic pole end of the corresponding permanent magnet through the through hole on the lower base plate, when the movable assembly moves to the bottom of the shell, the current in the coil of the electromagnet can be disconnected, and the movable assembly can be fixed at the bottom of the containing cavity of the shell through the magnetic attraction of the magnetic core of the electromagnet by one magnetic pole end of the permanent magnet facing the electromagnet, so that the lens assembly is kept in the telephoto mode, thereby saving electric energy.

[0024] In a possible design, the edge of the lens holder is provided with a notch corresponding to at least two permanent magnets; and the permanent magnet is fixed in the corresponding notch.

[0025] Based on the possible design, the permanent magnet is fixed in the notch of the lens holder, which can increase the contact area between the permanent magnet and the lens holder, so that the connection between the permanent magnet and the lens holder is more stable, thereby enabling the permanent magnet to smoothly drive the lens holder to move.

[0026] Optionally, the first focusing mode is a telephoto mode, and the second focusing mode is a macro mode.

[0027] In a second aspect, the present application provides an electronic device comprising the camera module provided by the various possible designs of the first aspect.

[0028] In a third aspect, the present application provides another electronic device, comprising a lens assembly, a driving module and a second processor, the driving module being electrically connected with the second processor; the driving module comprises a shell, a lens holder, a magnetic assembly, a first circuit board and an electromagnetic assembly; the magnetic assembly is fixed on the periphery of the lens holder, and the magnetic assembly and the lens holder are located in the accommodating cavity of the shell; the first circuit board is fixed on the outer side of the shell away from the lens holder, the electromagnetic assembly is fixed on the side of the first circuit board facing the shell, and the first circuit board is electrically connected with the electromagnetic assembly; the lens holder, the shell and the first circuit board are all hollow structures, and the hollow structures are used for fixing the lens assembly; if the second processor detects that the focusing mode of the lens assembly is switched from a first focusing mode to a second focusing mode, the second processor controls to input a first direction of current to the first circuit board, the magnetic assembly drives the lens holder and the lens assembly to move in parallel by a first distance in a direction away from the magnetic assembly from the bottom of the shell under the magnetic repulsion of the electromagnetic assembly, and then the top of the magnetic assembly abuts against the top of the shell; if the second processor detects that the focusing mode of the lens assembly is switched from the second focusing mode to the first focusing mode, the second processor controls to input a second direction of current to the first circuit board, the magnetic assembly drives the lens holder and the lens assembly to move in parallel by the first distance in a direction close to the magnetic assembly from the top of the shell under the magnetic attraction of the electromagnetic assembly, and then the bottom of the magnetic assembly abuts against the bottom of the shell, the first direction being opposite to the second direction. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 FIG. 1 is a structural schematic diagram of an electronic device provided by an embodiment of the present application.

[0030] Figure 2 FIG. 2 is a whole structural schematic diagram of a camera module provided by an embodiment of the present application.

[0031] Figure 3 FIG. 3 is an exploded structural schematic diagram of a camera module provided by an embodiment of the present application.

[0032] Figure 4 FIG. 4 is a whole structural schematic diagram of a driving module provided by an embodiment of the present application.

[0033] Figure 5 FIG. 5 is an exploded structural schematic diagram of a driving module provided by an embodiment of the present application.

[0034] Figure 6 FIG. 6 is a whole structural schematic diagram of a driving module and a lens assembly provided by an embodiment of the present application.

[0035] Figure 7 FIG. 7 is a top view of FIG. 6. Figure 6

[0036] Figure 8 ​is a structural schematic view of a magnetic assembly and an electromagnetic assembly in a first relative position according to an embodiment of the present application.

[0037] Figure 9 is Figure 7 is an A-A sectional view of a lens assembly and a movable assembly in a bottom of a shell.

[0038] Figure 10 is a structural schematic view of a magnetic assembly and an electromagnetic assembly in a second relative position according to an embodiment of the present application.

[0039] Figure 11 is Figure 7 is an A-A sectional view of a lens assembly and a movable assembly in a top of a shell.

[0040] Figure 12 is a flowchart of a method for a second processor in an electronic device to control a camera module to implement a two-stage focusing function according to an embodiment of the present application.

[0041] Reference signs:

[0042] 100, drive module; 110, shell; 111, upper cover; 1111, upper substrate; 1112, extension; 112, base; 1121, lower substrate; 11211, through hole; 1122, surrounding edge; 11221, avoiding slot; 120, movable assembly; 121, lens support; 1211, notch; 122, magnetic assembly; 1221, permanent magnet; 130, accommodating cavity; 140, first circuit board; 150, electromagnetic assembly; 151, electromagnet; 1511, magnetic core; 1512, coil; 200, camera module; 210, lens assembly; 211, lens; 212, shell; 220, imaging assembly; 221, second circuit board; 2211, arranging slot; 222, image sensor; 230, connector; 240, bearing plate; 241, light passing hole; 250, optical filter; 260, first processor; 270, wire; 300, electronic device; 310, second processor; 320, power supply module.

[0043] 200, camera module; 210, lens assembly; 211, lens; 212, shell; 220, imaging assembly; 221, second circuit board; 2211, arranging slot; 222, image sensor; 230, connector; 240, bearing plate; 241, light passing hole; 250, optical filter; 260, first processor; 270, wire; 300, electronic device; 310, second processor; 320, power supply module.

[0044] 300, electronic device; 310, second processor; 320, power supply module. DETAILED DESCRIPTION

[0045] The camera module can be applied to electronic devices such as mobile phones, tablet computers, notebook computers, etc., so that these devices realize digital photographing and video shooting functions. The camera module is generally composed of a lens assembly, a drive module and an image sensor. The lens assembly is composed of various optical lenses. The drive module is used to drive the lens assembly to move relative to the image sensor, so as to adjust the distance between the lens assembly and the image sensor, change the focal length of the camera module, and thus realize various focusing modes such as telephoto, macro, etc.

[0046] A spring type driving module in the prior art comprises an elastic assembly, a lens holder and a permanent magnet arranged in a shell, the lens holder is peripherally sleeved with a coil, the permanent magnet can be arranged at the periphery of the lens holder at intervals, and the center of the lens holder is used for fixing a lens. The elastic assembly comprises upper and lower spring plates which are both annular structures, the outer ring portions of the upper and lower spring plates are both fixed on the shell, and the inner ring portion of the upper spring plate and the inner ring portion of the lower spring plate are connected with the top of the lens holder and the bottom of the lens holder respectively.

[0047] The principle of the driving module is as follows: the coil can generate a magnetic field when electrified, the interaction between the magnetic field and the permanent magnetic field of the permanent magnet can drive the coil to move, the lens holder and the lens assembly can be controlled to move along the optical axis direction of the camera module under the driving of the coil and through the elastic force of the upper and lower spring plates, the moving distance of the lens holder and the lens assembly can be controlled by adjusting the size of the current in the coil, so as to realize the automatic focusing function, and the lens holder and the lens assembly can be reset under the elastic force of the upper and lower spring plates after the coil is de-energized.

[0048] The area between the outer ring portion and the inner ring portion in the upper and lower spring plates of the existing driving module is a hollow structure composed of connecting ribs, the elasticity is large, and the upper and lower spring plates are easily affected by external force and vibrate, for example, the vibration of the electronic device caused by the arm shaking of the user during shooting or the movement of the user's body when moving to take a photo will affect the accuracy of the automatic focusing of the camera module.

[0049] Therefore, in view of the problem that the spring type driving module in the existing camera module is easily vibrated under the action of external force, the application provides a camera module and an electronic device, the lens holder and the magnetic assembly in the camera module are arranged inside the shell of the driving module, the magnetic assembly is arranged at the periphery of the lens holder, the center of the lens holder is used for fixing the lens assembly, the first circuit board is arranged outside the shell, and the electromagnetic assembly is arranged on the side of the shell facing the shell, one end of the electromagnetic assembly is opposite to the magnetic pole end of the magnetic assembly, the magnetic pole direction of the magnetic field generated by the electromagnetic assembly can be changed by changing the direction of the current in the electromagnetic assembly, the lens holder and the lens assembly can be driven to move in the shell along the optical axis direction of the camera module through the magnetic attraction and magnetic repulsion between the electromagnetic assembly and the magnetic assembly, and compared with the existing spring type driving module, the structure is more stable and is not easily vibrated.

[0050] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings for the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0051] In the description of the embodiments of the present application, the terms "first", "second" are only used for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features.

[0052] In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified and limited.

[0053] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For a person of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0054] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0055] In the description of the present application, it should be understood that the terms "in", "out", "side", "up", "bottom", "front", "back" and the like indicate the orientation or positional relationship only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0056] In the description of the present application, it should be noted that the term "and / or" merely describes an association relationship of associated objects, and can represent three relationships, for example, A and / or B, which can represent three cases of A alone, A and B together, and B alone.

[0057] It should also be noted that the same reference signs or the same components are denoted by the same reference signs in the embodiments of the present application. For the same components in the embodiments of the present application, only one of the components or parts may, for example, be labeled with a reference sign in the drawings, and it should be understood that the reference signs are applicable to other identical components or parts.

[0058] The driving module 100 provided by the embodiments of the present application is applied to the camera module 200 of the electronic device 300, wherein the electronic device 300 can be a mobile phone, a camera, a tablet computer, a wearable device, or the like, which has a photographing function. In an embodiment, referring to a structural schematic diagram of the electronic device 300 shown in FIG. 1, the electronic device 300 includes the camera module 200 provided by the embodiments of the present application and a second processor 310, and the second processor 310 is connected with the camera module 200. Figure 1

[0059] For example, the second processor 310 can include one or more processing units, for example, the second processor 310 can include an application processor (application processor, AP), a modem processor, a graphics processing unit (graphics processing unit, GPU), an image signal processor (image signal processor, ISP), a controller, a memory, a video codec, a digital signal processor (digital signal processor, DSP), a baseband processor, and / or a neural-network processing unit (neural-network processing unit, NPU), etc. Different processing units can be independent devices or can be integrated into one or more processors. The controller can be the nerve center and command center of the electronic device 300, and the controller can generate operation control signals according to instruction operation codes and timing signals to complete the control of instruction fetching and instruction execution.

[0060] Further, the electronic device 300 further includes a power supply module 320, the power supply module 320 is connected with the second processor 310 and the camera module 200, and is used to supply power for the camera module 200 and the second processor 310. The second processor 310 can control the power supply current direction and the power supply state of the power supply module 320 to the camera module 200, and the power supply state includes a power-off state and a power-on state. For example, the power supply module 320 can be a battery. ​

[0061] The second processor 310 in the electronic device 300 can detect a switching operation of a user on a focusing mode of the lens assembly 210 in the camera module 200, and after determining the current focusing mode according to the switching operation, sends a corresponding control instruction to the camera module 200, so that the camera module 200 implements a two-stage focusing function. The specific structure of the camera module 200 and the driving module 100 provided in the embodiments of the present application will be described below in combination with Figures 2 to 11 The specific structure of the camera module 200 and the driving module 100 provided in the embodiments of the present application will be described below in combination with

[0062] The structure diagram of the camera module 200 provided in the embodiments of the present application is shown in Figure 2 and Figure 3 The structure diagram of the camera module 200 provided in the embodiments of the present application is shown in Figure 2 is the overall structure diagram of the camera module 200 provided in the embodiments of the present application, Figure 3 is Figure 2 The explosion structure diagram of the camera module 200 is shown in. In a possible implementation manner, the camera module 200 provided in the present application includes a lens assembly 210, a driving module 100, and an imaging assembly 220.

[0063] The driving module 100 is a hollow structure, and the lens assembly 210 is arranged in the hollow structure of the driving module 100. The imaging assembly 220 is arranged on the outside of the driving module 100 in a stacked manner. The lens assembly 210 and the imaging assembly 220 are coaxial, and the lens assembly 210 and the imaging assembly 220 are arranged opposite to each other on the optical axis path of the camera module 200. The driving module 100 is used to adjust the relative distance between the lens assembly 210 and the imaging assembly 220, thereby adjusting the focal length of the driving module 100.

[0064] As shown in Figure 3 The lens assembly 210 in the camera module 200 includes a lens 211 and a shell 212. The lens 211 is a transparent optical component composed of one or more curved optical glasses. The material of the lens 211 can be a plastic lens or a glass lens. The shell 212 can be used to protect the optical components in the lens. The center of the shell 212 is provided with a through fixing hole. The lens 211 is fixedly arranged in the fixing hole, so that external light can be incident from one end of the fixing hole to the light incident end of the lens 211, and then emitted from the light emission end of the lens 211 to the other end of the fixing hole and out of the lens assembly 210.

[0065] For example, the lens 211 in the lens assembly 210 can be a long-focus lens or a short-focus lens.

[0066] In the embodiments of the present application, the imaging assembly 220 includes a second circuit board 221 and an image sensor 222. The second circuit board 221 is a substrate of the camera module 200, as shown in Figure 2 and Figure 3As shown, the second circuit board 221 is provided with a mounting groove 2211 on the side facing the lens assembly 210, and the image sensor 222 is arranged in the mounting groove 2211. The light receiving surface of the image sensor 222 is opposite to the lens assembly 210, and the image sensor 222 is coaxial with the lens assembly 210 and arranged opposite to the lens assembly 210 along the optical axis direction of the camera module 200, and the image sensor 222 can convert the received light signal incident through the lens assembly 210 into an electrical signal.

[0067] By way of example and not limitation, the second circuit board 221 can be composed of a printed circuit board (PCB) or a flexible printed circuit (FPC). The image sensor 222 includes a light sensing chip, which can be a charge coupled device (CCD) chip or a complementary metal oxide semiconductor (CMOS) chip.

[0068] The second circuit board 221 is also provided with a connector 230, which is electrically connected to the image sensor 222 through the second circuit board 221. When the camera module 200 is arranged in the electronic device 300, the connector 230 on the second circuit board 221 can be connected to the second processor 310 and the power supply module 320 in the electronic device 300, and the second circuit board 221 and the image sensor 222 of the camera module 200 can be powered through the connector 230, and information transmission between the second circuit board 221 and the image sensor 222 can be realized. Specifically, external light can enter the inside of the camera module 200 through the lens assembly 210, the image sensor 222 can convert the received light signal incident through the lens assembly 210 into an electrical signal, and the electrical signal into image information, and the image information can be transmitted to the main processor of the electronic device 300 through the second circuit board 221 and the connector 230 for processing.

[0069] For example, the connector 230 can be a USB data transmission controller. The connector 230 can realize USB data transmission mode, which can realize time-sharing transmission of data, and transmit different data in different time periods, so as to realize fast data transmission. At the same time, the USB transmission mode has fewer pins and large data transmission capacity, so as to realize miniaturization of the camera module 200 and improve the data transmission performance of the camera module 200.

[0070] Further, the camera module 200 further includes a bearing plate 240 and a filter 250. As shown in the figure, Figure 3As shown, the bearing plate 240 is arranged between the driving module 100 and the second circuit board 221. Specifically, the bearing plate 240 is fixedly arranged on the top of the second circuit board 221, the driving module 100 is fixedly arranged on the top of the bearing plate 240, the bearing plate 240 is provided with a light hole 241, the light hole 241 is in communication with the hollow structure of the driving module 100, and the filter 250 is fixedly arranged at the light hole 241, so that the filter 250 is arranged opposite to the lens assembly 210 and the image sensor 222 along the optical axis direction of the lens assembly 210.

[0071] Optionally, the light hole 241 arranged on the bearing plate 240 is a stepped hole, which includes a large hole, a stepped surface and a small hole, the large hole is in communication with the small hole, the large hole is located on the top of the small hole, the filter 250 is located in the large hole, and the bottom of the filter 250 is fixedly connected with the stepped surface. For example, the bottom of the filter 250 can be fixed on the stepped surface by an adhesive.

[0072] After the external light passes through the lens assembly 210 and is emitted, it is first incident to the filter 250. The filter 250 can filter out specific light, such as ultraviolet light and infrared light which are not easy to be observed by the human eye, thereby reducing stray light. The light filtered by the filter 250 can be incident to the image sensor 222. The filtering characteristics of the filter 250 also play a crucial role in the imaging effect of the camera module 200.

[0073] By way of example and not limitation, the filter 250 can be an infrared cut-off filter, a red filter, a blue filter or a green filter.

[0074] The structural diagram of the driving module 100 provided by the embodiment of the present application is shown in Figure 4 and Figure 5 As shown, Figure 4 the overall structural diagram of the driving module 100 provided by the embodiment of the present application, Figure 5 the exploded structural diagram of the driving module 100 provided by the embodiment of the present application. The driving module 100 includes a shell 110, a movable assembly 120, a first circuit board 140 and an electromagnetic assembly 150. The movable assembly 120 is movably arranged in the accommodating cavity 130 of the shell 110, the first circuit board 140 is fixed on the outer side of the shell 110, and the electromagnetic assembly 150 is arranged on the side of the first circuit board 140 facing the shell 110.

[0075] The movable component 120 includes a lens bracket 121 and a magnetic component 122. The magnetic component 122 is fixed to the periphery of the lens bracket 121, and one magnetic end of the magnetic component 122 is positioned opposite to one end of the electromagnetic component 150. The lens bracket 121, the housing 110, and the first circuit board 140 are all hollow structures. The lens component 210 passes through the hollow structures of the lens bracket 121, the housing 110, and the first circuit board 140, and is fixed within the hollow structure of the lens bracket 121.

[0076] The first circuit board 140 is electrically connected to the electromagnetic component 150. The direction of the magnetic poles of the electromagnetic component 150 can change with the change of the direction of the current input to the first circuit board 140 and the electromagnetic component 150. The magnetic force between the electromagnetic component 150 and the magnetic component 122 will also change accordingly. Through the magnetic force between the electromagnetic component 150 and the magnetic component 122, the magnetic component 122 can drive the lens bracket 121 to move along the optical axis of the lens assembly 210 within the receiving cavity 130. During the movement of the lens bracket 121, the lens assembly 210 also moves along the optical axis.

[0077] like Figure 5 As shown, the housing 110 of the drive module 100 includes a base 112 and a top cover 111. The top cover 111 includes an upper substrate 1111 and an extension 1112 disposed at the edge of the upper substrate 1111 and extending towards the base 112. The base 112 includes a lower substrate 1121 and a perimeter 1122 surrounding the edge of the lower substrate 1121 and extending towards the top cover 111. When the top cover 111 is placed on the base 112, it forms a receiving cavity 130 for the drive module 100, and the inner wall of the extension 1112 abuts against the outer wall of the perimeter 1122. Both the upper substrate 1111 and the lower substrate 1121 have a hollow structure at their centers that matches the shape of the lens assembly 210. For example, if the lens assembly 210 is cylindrical, the hollow structures of the upper substrate 1111 and the lower substrate 1121 are also circular.

[0078] It should be noted that, in the drive module 100 described in this application embodiment, the inner sidewall of each component is the side of each component facing the receiving cavity 130, and the outer sidewall of each component is the side of each component facing away from the receiving cavity 130.

[0079] Furthermore, at least two extensions 1112 can be evenly and spaced apart along the edge of the upper substrate 1111. A clearance groove 11221 corresponding to each extension 1112 is formed on the outer wall of the perimeter 1122. When the upper cover 111 is placed on the base 112, the extensions 1112 in the upper cover 111 can be inserted into the corresponding clearance grooves 11221 of the base 112, improving the firmness of the upper cover 111 on the base 112. For example, as shown...Figure 5 As shown, assuming that the upper substrate 1111 and the lower substrate 1121 are both square in shape, the perimeter 1122 can be distributed in a square shape. An extension 1112 is provided in each direction of the edge of the upper substrate 1111, and there is a certain interval between two adjacent extensions 1112.

[0080] like Figure 4 As shown, the lens holder 121 and the magnetic component 122 are disposed within the receiving cavity 130, and the lens holder 121 and the magnetic component 122 can move along the height direction of the receiving cavity 130. The height of the receiving cavity 130 is the distance between the inner sidewall of the upper substrate 1111 and the inner sidewall of the lower substrate 1121 when the upper cover 111 is closed on the base 112. The center of the lens holder 121 has a hollow structure that matches the shape and size of the outer shell 212 of the lens assembly 210. The lens assembly 210 can be inserted into the hollow structure of the upper cover 111, the lens holder 121, and the base 112, and the lens assembly 210 is fixedly connected to the lens holder 121.

[0081] By way of example and not limitation, the lens bracket 121 may be square, rectangular, circular, or other irregular in shape, and the hollow structure at the center of the lens bracket 121 may be a through hole of square, rectangular, circular, or other irregular shape. By way of example and not limitation, if the outer shell 212 of the lens assembly 210 is cylindrical, then the hollow structures located in the middle of the upper cover 111, the middle of the lens bracket 121, and the middle of the base 112 may all be circular through holes. In this embodiment of the application, no limitation is made on the shape of the outer shell 212 of the lens assembly 210, the shape of the lens bracket 121, and the shape of the hollow structures of the upper cover 111, the lens bracket 121, and the base 112.

[0082] In this embodiment, the height of the receiving cavity 130 is the distance between the inner wall of the upper substrate 1111 and the inner wall of the lower substrate 1121 when the upper cover 111 is covered on the base 112. Therefore, the height of the receiving cavity 130 is related to the height of the extension 1112 of the upper cover 111 and the height of the perimeter 1122 of the base 112.

[0083] In one example, see Figure 4The overall structure of the driving module 100 is shown, and the height of the accommodating cavity 130 depends on the height of the surrounding edge 1122. Specifically, the height of the extension part 1112 can be less than or equal to the height of the surrounding edge 1122. When the upper cover 111 is covered on the base 112, the top end of the surrounding edge 1122 abuts against the inner side wall of the upper substrate 1111, and the height of the accommodating cavity 130 of the shell 110 is equal to the height between the top end of the surrounding edge 1122 and the inner side wall of the lower substrate 1121. Further, in this example, the height of the avoiding slot 11221 formed on the outer side wall of the surrounding edge 1122 can be greater than the height of the surrounding edge 1122. When the extension part 1112 is clamped in the avoiding slot 11221 of the surrounding edge 1122, the end of the extension part 1112 away from the upper substrate 1111 has a certain gap between the first circuit board 140 arranged at the bottom of the lower substrate 1121. The height of the avoiding slot 11221 formed on the outer side wall of the surrounding edge 1122 can also be equal to the height of the surrounding edge 1122. When the extension part 1112 is clamped in the avoiding slot 11221 of the surrounding edge 1122, the end of the extension part 1112 away from the upper substrate 1111 abuts against the bottom of the avoiding slot 11221.

[0084] In other examples, the height of the accommodating cavity 130 depends on the height of the extension part 1112. Specifically, the height of the extension part 1112 can be greater than the height of the surrounding edge 1122. The height of the avoiding slot 11221 formed on the outer side wall of the surrounding edge 1122 is equal to the height of the surrounding edge 1122. When the upper cover 111 is covered on the base 112, the end of the extension part 1112 away from the upper substrate 1111 abuts against the first circuit board 140 arranged at the bottom of the lower substrate 1121, and the surrounding edge 1122 has a certain gap between the top end and the inner side wall of the upper substrate 1111. The height of the accommodating cavity 130 of the shell 110 is equal to the height between the inner side wall of the lower substrate 1121 and the inner side wall of the upper substrate 1111.

[0085] In one example, the lens assembly 210 and the lens holder 121 can be screwed together, for example, Figure 3 As shown, the outer side wall of the shell 212 in the lens assembly 210 and the inner ring side wall of the lens holder 121 are provided with threads, and the lens assembly 210 can be fixedly connected by threads. In another example, the lens assembly 210 and the lens holder 121 can also be fixedly connected by bonding, welding or other methods.

[0086] In the embodiments of the present application, the magnetic assembly 122 includes at least two permanent magnets 1221, and the permanent magnets 1221 in the magnetic assembly 122 are uniformly distributed on the periphery of the lens holder 121 and fixedly connected with the outer side wall of the lens holder 121. For example, the side wall of the permanent magnet 1221 and the outer side wall of the lens holder 121 can be fixedly connected by bonding.

[0087] Further, refer to Figure 3 An exploded structural schematic diagram of the camera module 200 is shown in FIG. 2B, and an exploded structural schematic diagram of the driving module 100 is shown in FIG. 3B. Figure 5 An exploded structural schematic diagram of the driving module 100 is shown in FIG. 3B, the lens holder 121 is provided with a notch 1211 corresponding to each of the plurality of permanent magnets 1221 in the magnetic assembly 122, the size and shape of the notch 1211 match the size and shape of the permanent magnet 1221, and the permanent magnet 1221 can be fixedly arranged in the notch 1211. The permanent magnet 1221 includes two magnetic pole ends, which are N level and S level respectively. One of the two magnetic pole ends is opposite to the upper substrate 1111 of the upper cover 111, and the other is opposite to the lower substrate 1121 of the base 112.

[0088] By way of example, and without limitation, refer to Figure 5 An exploded structural schematic diagram of the driving module 100 is shown in FIG. 3B. Assuming that the shape of the lens holder 121 is rectangular, and the magnetic assembly 122 includes four permanent magnets 1221, a notch 1211 can be formed at each corner of the lens holder 121, and each permanent magnet 1221 is fixed in the notch 1211, so that the outer side wall of the permanent magnet 1221 is flush with the outer side wall of the lens holder 121. The outer side wall of the permanent magnet 1221 is the side wall of the permanent magnet 1221 facing the surrounding edge 1122 of the base 112, and the outer side wall of the lens holder 121 is the side wall of the lens holder 121 facing the surrounding edge 1122 of the base 112.

[0089] In the camera module 200 provided by the embodiments of the present application, the first circuit board 140 in the driving module 100 is arranged between the base 112 and the bearing plate 240, and the first circuit board 140 is fixedly arranged on the side of the bearing plate 240 away from the second circuit board 221. The center of the first circuit board 140 is provided with a hollow structure, and the hollow structure of the first circuit board 140 is in communication with the hollow structures of the upper cover 111, the lens holder 121 and the base 112. The filter 250 arranged on the bearing plate 240 is opposite to the hollow structure of the first circuit board 140, so that external light can be incident on the filter 250 through the lens assembly 210 arranged in the hollow structure. The side of the first circuit board 140 facing the base 112 is provided with an electromagnetic assembly 150, and the electromagnetic assembly 150 includes a plurality of electromagnets 151. The electromagnet 151 in the electromagnetic assembly 150 corresponds to the permanent magnet 1221 in the magnetic assembly 122, and the top end of the electromagnet 151 is arranged opposite to the bottom end of the permanent magnet 1221.

[0090] The electromagnet 151 includes a magnetic core 1511 and a coil 1512 arranged at the periphery of the magnetic core 1511, one end of the magnetic core 1511 is fixedly connected with the first circuit board 140, and the other end is opposite to the bottom of the base 112. The coil 1512 of each electromagnet 151 in the electromagnetic assembly 150 is electrically connected with the first circuit board 140, and the first circuit board 140 can be electrically connected with the second circuit board 221. When the connector 230 on the second circuit board 221 is connected with the power supply module 320 of the electronic device 300, the first circuit board 140, the second circuit board 221 and the coil 1512 of each electromagnet 151 on the first circuit board 140 can be powered through the connector 230.

[0091] Further, referring to Figure 3 The first processor 260 can be further arranged on the second circuit board 221, and the first processor 260 can be connected with the first circuit board 140 through two wires 270, one of which is used as a current input wire, and the other is used as a current output wire. The two ports of the coil 1512 of the electromagnet 151 are in one-to-one correspondence with the two wires 270 through the first circuit board 140.

[0092] The first processor 260 can be connected with the second processor 310 in the electronic device 300 through the second circuit board 221 and the connector 230. The first processor 260 can detect whether the user switches the focusing mode in the lens assembly 210 through the second processor 310, and control the direction of the current output from the second circuit board 221 to the first circuit board 140 based on the switched focusing mode, thereby controlling the direction of the current of each electromagnet 151 on the first circuit board 140.

[0093] It should be noted that the coil 1512 of the electromagnet 151 can generate a magnetic field when powered on. By changing the direction of the current in the coil 1512, the direction of the magnetic pole of the magnetic field can be changed, and by changing the size of the current flowing through the coil 1512, the size of the magnetic field can be changed. One magnetic pole of the magnetic field generated by the electromagnet 151 when the coil 1512 is powered on is opposite to the magnetic pole end of the bottom of the permanent magnet 1221, so that the interaction force between the electromagnet 151 and the permanent magnet 1221 is generated. After the coil 1512 is powered off, the magnetic field of the electromagnet 151 disappears.

[0094] Specifically, if the first processor 260 detects that the focusing mode of the lens assembly 210 is switched from the first focusing mode to the second focusing mode, the first processor 260 controls the input of the energizing current in the first direction to the first circuit board 140, and the magnetic assembly 122 drives the lens holder 121 and the lens assembly 210 to move in parallel by a first distance from the bottom of the shell 110 to a direction away from the electromagnetic assembly 150 under the magnetic repulsion of the electromagnetic assembly 150, and then the top of the magnetic assembly 122 abuts against the top of the shell 110. If the first processor 260 detects that the focusing mode of the lens assembly 210 is switched from the second focusing mode to the first focusing mode, the first processor 260 controls the input of the energizing current in the second direction to the first circuit board 140, and the magnetic assembly 122 drives the lens holder 121 and the lens assembly 210 to move in parallel by a first distance from the top of the shell 110 to a direction close to the electromagnetic assembly 150 under the magnetic attraction of the electromagnetic assembly 150, and then the bottom of the magnetic assembly 122 abuts against the bottom of the shell 110. The first direction is opposite to the second direction.

[0095] For example, the first focusing mode can be a telephoto mode, and the second focusing mode can be a macro mode. When the lens assembly 210 is in the telephoto mode, the lens 211 of the lens assembly 210 is focused at infinity, and the distance between the lens 211 and the image sensor 222 in the camera module 200 is greater than the distance between the lens 211 and the image sensor 222 in the camera module 200 when the lens assembly 210 is in the macro mode.

[0096] By way of example and without limitation, the first processor 260 can include one or more processing units, such as: an application processor (AP), a modem processor, a graphics processing unit (GPU), an image signal processor (ISP), a controller, a memory, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural-network processing unit (NPU), etc. Different processing units can be independent devices or integrated in one or more processors. The controller in the first processor 260 can be the nerve center and command center of the camera module 200. The controller can generate operation control signals according to instruction operation codes and timing signals to complete the control of fetching and executing instructions.

[0097] In some possible designs, see Figure 5As shown in the exploded structural schematic diagram of the driving module 100, the lower base plate 1121 of the base 112 of the shell 110 is provided with a through hole 11211 corresponding to each electromagnet 151 in the electromagnetic assembly 150, and when the shell 110 is stacked on the first circuit board 140, the top surface of the first circuit board 140 facing the shell 110 can abut against the bottom surface of the lower base plate 1121, and the top end of each electromagnet 151 is opposite to the bottom end of the corresponding permanent magnet 1221 through the corresponding through hole 11211.

[0098] By way of example, and without limitation, as Figure 5 shown, the shapes of the lens holder 121, the shell 110 and the first circuit board 140 are all square, the magnetic assembly 122 includes four permanent magnets 1221, and the four permanent magnets 1221 are distributed at the four corners of the lens holder 121, then one through hole 11211 can be formed at each of the four corners of the lower base plate 1121 of the shell 110, and the electromagnetic assembly 150 includes four electromagnets 151, and the four electromagnets 151 are arranged on the first circuit board 140 in one-to-one correspondence with the positions of the four permanent magnets 1221.

[0099] In some embodiments, the electromagnet 151 can be embedded in the first circuit board 140, so that the top end of the magnetic core 1511 of the electromagnet 151 is at the same horizontal plane as the side of the first circuit board 140 facing the shell 110, and then the height of the permanent magnet 1221 can be greater than the height of the lens holder 121, so that when the movable assembly 120 moves to the bottom of the accommodating cavity 130 based on the magnetic attraction force between the magnetic assembly 122 and the electromagnetic assembly 150, the bottom of the lens holder 121 abuts against the inner side wall of the lower base plate 1121 of the base 112, and the magnetic pole end of the bottom of each permanent magnet 1221 can abut against the top end of the corresponding electromagnet 151 through the through hole 11211, so that each permanent magnet 1221 is in sufficient contact with the top end of the magnetic core 1511 of the corresponding electromagnet 151, which can improve the stability of the connection between the magnetic assembly 122 and the electromagnetic assembly 150, so as to keep the lens holder 121 and the lens assembly 210 at the telephoto position.

[0100] In some embodiments, as Figure 5 shown, the electromagnet 151 can be protruded on the side of the first circuit board 140 facing the shell 110, so that the electromagnet 151 can be inserted into the corresponding through hole 11211, so that when the movable assembly 120 moves to the bottom of the accommodating cavity 130 based on the magnetic attraction force between the magnetic assembly 122 and the electromagnetic assembly 150, the magnetic pole end of the bottom of each permanent magnet 1221 abuts against the top end of the electromagnet 151 inserted into the corresponding through hole 11211. Correspondingly, as Figure 5As shown, the height of each permanent magnet 1221 can be greater than the height of the lens holder 121, such that when the magnetic pole end at the bottom of the permanent magnet 1221 abuts against the top end of the electromagnet 151 passing through the corresponding through hole 11211, there is a gap between the bottom of the lens holder 121 and the inner side wall of the lower base plate 1121 of the base 112. The height of each permanent magnet 1221 can also be equal to the height of the lens holder 121, such that when the magnetic pole end at the bottom of the permanent magnet 1221 abuts against the top end of the electromagnet 151 passing through the corresponding through hole 11211, the bottom of the lens holder 121 abuts against the inner side wall of the lower base plate 1121 of the base 112.

[0101] Optionally, the heights of all the permanent magnets 1221 in the magnetic assembly 122 are equal, and the magnetic poles of the magnetic pole ends of all the permanent magnets 1221 facing the electromagnet 151 are the same, and the magnetic poles of the magnetic pole ends facing the upper base plate 1111 are also the same. The relative height between the permanent magnet 1221 and the lens holder 121 and the relative height between the electromagnet 151 and the first circuit board 140 are not limited in the embodiments of the present application.

[0102] It should be noted that in the lens assembly 210 provided by the embodiments of the present application, the current direction and the current size flowing through each electromagnet 151 in the electromagnetic assembly 150 are the same, such that when the electromagnetic assembly 150 is powered on, the interaction force between each electromagnet 151 and the corresponding permanent magnet 1221 is consistent, and all the permanent magnets 1221 in the magnetic assembly 122 are driven to move in the same direction at the same time.

[0103] In a possible design, the upper base plate 1111 of the upper cover 111 in the shell 110 can be made of a soft magnetic material, and the extension 1112 of the upper cover 111 and the base 112 are made of a non-magnetic material. If the magnetic repulsion force is generated between each electromagnet 151 in the electromagnetic assembly 150 and the corresponding permanent magnet 1221 when the electromagnetic assembly 150 is powered on, the magnetic assembly 122 drives the lens holder 121 and the lens assembly 210 to move away from the image sensor 222, and when the top of the permanent magnet 1221 abuts against the inner side wall of the upper base plate 1111, the power supply to the electromagnetic assembly 150 can be disconnected, and the magnetic attraction force between the magnetic pole end at the top of the permanent magnet 1221 and the upper base plate 1111 can keep the lens holder 121 and the lens assembly 210 at the close-up position, which can save power. In addition, the extension 1112 and the base 112 supported by the non-magnetic material can avoid affecting the interaction force between the magnetic assembly 122 and the electromagnetic assembly 150. In addition, there should be a gap between the side wall of the permanent magnet 1221 and the inner side wall of the surrounding edge 1122 of the base 112, which can avoid wear between the permanent magnet 1221 and the surrounding edge 1122 during the movement of the permanent magnet 1221 along the optical axis.

[0104] Exemplarily, the material of the upper substrate 1111 can be ferrosilicon alloy, soft magnetic ferrite or other soft magnetic material. The material of the extension 1112 and the base 112 can be plastic.

[0105] In another possible design, the material of the upper substrate 1111 and the extension 1112 of the upper cover 111 can be soft magnetic material. In order to avoid the interaction force between the magnetic assembly 122 and the extension 1112 made of soft magnetic material, affecting the parallel movement of the movable assembly 120 along the optical axis direction, the gap between the sidewall of the permanent magnet 1221 and the inner sidewall of the surrounding edge 1122 can be increased, so that each permanent magnet 1221 of the magnetic assembly 122 avoids generating magnetic attraction or repulsion between the extension 1112 located at the outer sidewall of the surrounding edge 1122, or each extension 1112 can be projected on the surrounding edge 1122 and the projection of the adjacent permanent magnet 1221 on the surrounding edge 1122 is not overlapped, so as to avoid the generation of magnetic attraction or repulsion when the part of the extension 1112 is opposite to the permanent magnet 1221.

[0106] In the camera module 200 provided by the embodiment of the present application, the lens assembly 210 and the lens holder 121 in the driving module 100 are movers, and the imaging assembly 220, the connector 230, the bearing plate 240, the filter 250, the first circuit board 140, the electromagnetic assembly 150 and the shell 110 in the driving module 100 are stators. By changing the current direction flowing through each electromagnet 151 in the electromagnetic assembly 150, the direction of the magnetic field can be changed, so that through the interaction force between each electromagnet 151 and each corresponding permanent magnet 1221, each permanent magnet 1221 drives the lens holder 121 and the lens assembly 210 fixed on the lens holder 121 to move simultaneously in the direction away from the permanent magnet 1221 or in the direction close to the permanent magnet 1221 inside the shell 110, thereby realizing the two-stage switching of the far and near focal length.

[0107] Specifically, when the focusing mode of the lens assembly 210 is switched from the macro mode to the tele mode, the first processor 260 inputs the energizing current in the first direction to the first circuit board 140, and the magnetic repulsion force is generated between the magnetic assembly 122 and the electromagnetic assembly 150, so that the magnetic assembly 122 drives the lens holder 121 and the lens assembly 210 to move in parallel by a first distance from the bottom of the shell 110 to the direction away from the electromagnetic assembly 150, and then the top of the magnetic assembly 122 abuts against the top of the shell 110, the movable assembly 120 is located at the top of the accommodating cavity 130, and the distance between the lens assembly 210 and the image sensor 222 is the farthest. When the focusing mode of the lens assembly 210 is switched from the macro mode to the tele mode, the first processor 260 inputs the energizing current in the second direction opposite to the first direction to the first circuit board 140, and the magnetic repulsion force is generated between the magnetic assembly 122 and the electromagnetic assembly 150, so that the magnetic assembly 122 drives the lens holder 121 and the lens assembly 210 to move in parallel by a first distance from the top of the shell 110 to the direction close to the electromagnetic assembly 150, and then the bottom of the magnetic assembly 122 abuts against the bottom of the shell 110, the movable assembly 120 is located at the bottom of the accommodating cavity 130, and the distance between the lens assembly 210 and the image sensor 222 is the closest.

[0108] Therefore, based on the focal length of the lens 211 in the lens assembly 210, it can be determined that the difference between the image distance when the lens assembly 210 is in the tele mode for shooting and the image distance when the lens assembly 210 is in the macro mode for shooting is equal to the first distance that the movable assembly 120 moves in parallel in the accommodating cavity 130 when the camera module 200 switches the focusing mode, and the height difference between the height of the accommodating cavity 130 in the shell 110 and the height of the movable assembly 120 determines the size of the first distance. If L represents the first distance that the movable assembly 120 moves in parallel in the accommodating cavity 130 of the shell when the camera module 200 switches the focusing mode, L can be represented by the following formula:

[0109]

[0110] wherein f represents the focal length of the lens 211 of the lens assembly 210, u1 represents the object distance when the lens assembly 210 is in the close focus position, and u2 represents the object distance when the lens assembly 210 is in the tele focus position. u1 is much smaller than u2.

[0111] It should be noted that the height of the movable assembly 120 can be the height of the one with the largest height in the lens holder 121 and the magnetic assembly 122. For example, the height of the magnetic assembly 122 can be greater than the height of the lens holder 121, and accordingly, the first distance L can be the height difference between the accommodating cavity 130 and the electromagnetic assembly 150. In the condition that the focal length f of the lens 211 in the lens assembly 210 is fixed, the height difference should be the difference between the image distance when the camera module 200 is in the macro mode and the image distance when the camera module 200 is in the tele mode, so according to the different focal length f of the lens 211 in different lens assemblies 210, the first distance of the movable assembly 120 moving along the optical axis direction in the accommodating cavity 130 when the lens assembly 210 switches the focusing mode can be determined based on the above formula, and then the height of the accommodating cavity 130 of the shell 110 is set according to the maximum moving distance and the height of the movable assembly 120, so that the shell 110 with the adaptive height can be set for different lens assemblies 210.

[0112] The driving module 100 provided in the application can move the movable assembly 120 in the accommodating cavity 130 of the shell 110 through the magnetic attraction or magnetic repulsion between the movable assembly 120 and the laminated electromagnetic assembly 150, and the magnetic assembly 122 and the lens holder 121 are not easy to shake under the influence of external force, thereby realizing the two-stage focusing function, without the need to reset the mover through the elastic force of the upper and lower springs, and the driving module 100 without the upper and lower springs is not easy to shake under the influence of external force, and the driving module 100 provided in the application has a more simple structure, which is conducive to reducing the size of the camera module 200 and is suitable for small-sized electronic equipment 300. In addition, after the electromagnetic assembly 150 is powered off, the lens assembly 210 can be kept in the macro mode through the magnetic attraction between the magnetic assembly 122 and the upper substrate 1111, and the lens assembly 210 can be kept in the tele mode through the magnetic attraction between the magnetic assembly 122 and the magnetic core 1511 in the electromagnetic assembly 150, thereby saving power.

[0113] Referring to Figure 1 When the camera module 200 provided in the above embodiments is arranged in the electronic equipment 300, the second processor 310 in the electronic equipment 300 can be connected with the first processor 260 in the camera module 200 through the connector 230 and the second circuit board 221 in the camera module 200. The power supply module 320 is connected with the second processor 310 and the connector 230 in the camera module 200, and is used for supplying power to the camera module 200 and the second processor 310.

[0114] In the embodiment of the present application, the second processor 310 in the electronic device 300 can detect the switching operation of the user on the focusing mode of the lens assembly 210 in the camera module 200, and determine the current focusing mode according to the switching operation, and then control the current direction of the power supply current flowing into the first circuit board 140 through the first processor 260, so as to control the current direction of the power supply current and the pole direction of all electromagnets 151 in the electromagnetic assembly 150 arranged on the first circuit board 140, so that the magnetic force between the electromagnet 151 and the corresponding permanent magnet 1221 is generated, the electromagnetic assembly 150 drives the lens holder 121 to move in parallel along the optical axis direction of the lens assembly 210 in the accommodating cavity 130 to the top of the shell 110 or to the bottom of the shell 110, and the two-section focusing function is realized.

[0115] The specific process of the second processor 310 in the electronic device 300 provided in the embodiment of the present application controlling the lens assembly 210 in the camera module 200 to realize the two-section focusing function will be exemplarily described below with reference to the assembly structure diagram of the driving module 100 and the lens assembly 210 shown in Figures 6 to 11 and the flowchart shown in Figure 12

[0116] As shown in the embodiment of the present application, the method for the second processor 310 in the electronic device 300 to control the camera module 200 to realize the two-section focusing function includes the following steps: Figure 12

[0117] S1201, the second processor 310 sends a control instruction to the first processor 260 in response to the focusing mode switching instruction of the user on the lens assembly 210 in the camera module 200.

[0118] In one embodiment, the second processor 310 can detect the triggering operation of the user on the focusing mode switching control key arranged on the electronic device 300, and generate a focusing mode switching instruction according to the detection of the focusing mode switching operation of the user on the lens assembly 210. Wherein, the focusing mode switching control key can be a click control key, and the triggering operation can be a click operation. In other embodiments, the focusing mode switching instruction of the user on the lens assembly 210 in the camera module 200 can be a voice control instruction.

[0119] The focusing mode of the lens assembly 210 includes a macro mode and a telephoto mode, the user can switch the lens assembly 210 from the macro mode to the telephoto mode, or from the telephoto mode to the macro mode, and the second processor 310 can send different control instructions to the first processor 260 according to different focusing mode switching instructions.

[0120] S1202, the first processor 260 controls the current direction of the power supply current of the first circuit board 140 of the camera module 200 according to the control instruction. ​​

[0121] Specifically, if the focus mode switching command is used to instruct the lens assembly 210 to switch from macro mode to telephoto mode, the second processor 310 can send a first command to the first processor 260. The first command instructs the first processor 260 to input a current in a first direction to the first circuit board 140 and the electromagnetic component 150, so that a magnetic attraction force is generated between the electromagnetic component 150 and the magnetic component 122. If the focus mode switching command is used to instruct the lens assembly 210 to switch from telephoto mode to macro mode, the second processor 310 can send a second command to the first processor 260. The second command instructs the first processor 260 to input a current in a second direction to the first circuit board 140 and the electromagnetic component 150. The first direction is opposite to the second direction, so that a magnetic repulsion force is generated between the electromagnetic component 150 and the magnetic component 122.

[0122] S1203, when the magnetic force generated between the electromagnetic component 150 and the magnetic component 122 of the camera module 200 changes with the change of the direction of the current, the magnetic component 122 drives the lens bracket 121 of the camera module 200 to move parallel to the optical axis of the lens component 210 within the receiving cavity 130 of the camera module 200.

[0123] Specifically, when the first processor 260 inputs a current in the first direction to the first circuit board 140 and the electromagnetic component 150, a magnetic attraction force is generated between the electromagnetic component 150 and the magnetic component 122. The magnetic component 122 can drive the lens bracket 121 and the lens assembly 210 to move parallel to the bottom of the housing 110 in a direction closer to the electromagnetic component 150. See also Figure 8 The I region shown and Figure 9 When shown Figure 7 A cross-sectional view AA is shown when the lens assembly 210 and the movable assembly 120 are located at the bottom of the housing 110. When the lens assembly 210 is in telephoto mode, the magnetic assembly 122 and the lens bracket 121 are located at the bottom of the receiving cavity 130 of the housing 110. The magnetic pole end at the bottom of each permanent magnet 1221 in the magnetic assembly 122 abuts against the top of the magnetic core 1511 of the corresponding electromagnet 151 through the through hole 11211. The distance between the lens assembly 210 and the image sensor 222 is minimized.

[0124] When the first processor 260 inputs a second-direction current to the first circuit board 140 and the electromagnetic component 150, a magnetic repulsion force is generated between the electromagnetic component 150 and the magnetic component 122. The magnetic component 122 can then drive the lens bracket 121 and the lens assembly 210 to move parallel to the top of the housing 110 in a direction away from the electromagnetic component 150. (See also...) Figure 10 The I region shown and Figure 11 When shown Figure 7FIG. 10 is a cross-sectional view of the A-A section of the middle lens assembly 210 and the movable assembly 120 when the lens assembly 210 is located at the top of the housing 110, and the magnetic assembly 122 and the lens holder 121 are located at the top of the accommodating cavity 130 of the housing 110, and the top end of each permanent magnet 1221 in the magnetic assembly 122 can abut against the inner sidewall of the upper base plate 1111 of the upper cover 111, and the distance between the lens assembly 210 and the imaging assembly 220 is the largest when the lens assembly 210 is in the macro mode.

[0125] Optionally, the first processor 260 can also control the length of the energizing current input to the first circuit board 140 and the first direction and the second direction of the electromagnetic assembly 150 according to the control instruction, so as to disconnect the energizing current input to the first circuit board 140 after the magnetic assembly 122, the lens holder 121 and the lens assembly 210 move to the top of the housing 110 and the bottom of the housing 110.

[0126] Specifically, when the magnetic assembly 122 and the lens holder 121 move to the top of the accommodating cavity 130 of the housing 110, the first circuit board 140 is powered off, and the magnetic assembly 122, the lens holder 121 and the lens assembly 210 can be fixed at the top of the accommodating cavity 130 of the housing 110 by the magnetic attraction between the top magnetic pole end of the permanent magnet 1221 and the upper base plate 1111 of the upper cover 111, so that the lens assembly 210 of the electronic device 300 remains in the macro mode.

[0127] When the magnetic assembly 122 and the lens holder 121 move to the bottom of the accommodating cavity 130 of the housing 110, the first circuit board 140 is powered off, and the magnetic assembly 122, the lens holder 121 and the lens assembly 210 can be fixed at the bottom of the accommodating cavity 130 of the housing 110 by the magnetic attraction between the bottom magnetic pole end of each permanent magnet 1221 in the magnetic assembly 122 and the magnetic core 1511 of the corresponding electromagnet 151, so that the lens assembly 210 of the electronic device 300 remains in the telephoto mode.

[0128] By way of example and not limitation, assuming that the magnetic pole end of the permanent magnet 1221 facing the upper cover 111 is N pole and the magnetic pole end facing the electromagnet 151 is S pole, the top end magnetic pole of the magnetic core 1511 after magnetization can be N pole after the coil 1512 of each electromagnet 151 in the electromagnetic assembly 150 inputs the current in the first direction, and the top end magnetic pole of the magnetic core 1511 after magnetization can be S pole after the coil 1512 of each electromagnet 151 in the electromagnetic assembly 150 inputs the current in the second direction. The specific process of switching the two photographing modes of the electronic device 300 provided by the embodiments of the present application will be described below with reference to Figures 6 to 11 The specific process of switching the two photographing modes of the electronic device 300 provided by the embodiments of the present application will be described below with reference to

[0129] As Figures 6 to 9As shown, if the lens assembly 210 is in telephoto mode in the initial state and no current is flowing through the electromagnet 151, the bottom end of each permanent magnet 1221 and the top end of the corresponding electromagnet 151 can abut against each other through magnetic attraction, thereby fixing the magnetic assembly 122 and the lens bracket 121 to the bottom of the housing 110 receiving cavity 130. See Figure 8 The I region shown and Figure 9 When shown Figure 7 A cross-sectional view AA is shown when the lens assembly 210 and the movable assembly 120 are located at the bottom of the housing 110. When the camera module 200 is in telephoto mode, the magnetic assembly 122 and the electromagnetic assembly 150 are in contact, the distance between the lens assembly 210 and the image sensor 222 is minimal, and the magnetic assembly 122, the lens bracket 121 and the lens assembly 210 are located at the bottom of the receiving cavity 130 of the housing 110.

[0130] If the user switches the focus mode of the lens assembly 210 from telephoto mode to macro mode, the second processor 310 of the electronic device 300 can send a second instruction to the first processor 260 in the camera module 200. According to the second instruction, the first processor 260 causes the coil 1512 of each electromagnet 151 in the electromagnetic assembly 150 to receive a current of the same magnitude and in the first direction. The top magnetic pole of the magnetized core 1511 is the S pole, which is the same as the magnetic pole of the permanent magnet 1221 facing the magnetic end of the electromagnet 151. At this time, a magnetic repulsion force is generated between each electromagnet 151 and the corresponding permanent magnet 1221. (See also...) Figure 10 In region I shown, all permanent magnets 1221 in the magnetic assembly 122 can move away from the electromagnet 151 under the action of magnetic repulsion, while driving the lens bracket 121 and lens assembly 210 to move parallel to the top of the receiving cavity 130 along the optical axis in a direction away from the base 112. The maximum moving distance of the magnetic assembly 122 and lens assembly 210 within the housing 110 is L.

[0131] See Figure 11 When shown Figure 7 The image shows a cross-sectional view (AA) of the lens assembly 210 and the movable assembly 120 located at the top of the housing 110. When the magnetic assembly 122 and the lens support 121 move to the top of the receiving cavity 130, the top of each permanent magnet 1221 in the magnetic assembly 122 can abut against the inner wall of the upper substrate 1111 of the upper cover 111. The lens assembly 210 is in macro mode, and the distance between the lens assembly 210 and the imaging assembly 220 is at its maximum. At this time, the input current to all permanent magnets 1221 in the magnetic assembly 122 can be simultaneously disconnected. Through the magnetic attraction between the magnetic pole ends at the top of the permanent magnets 1221 and the upper substrate 1111 of the upper cover 111, the magnetic assembly 122, the lens support 121, and the lens assembly 210 can be fixed at the top of the receiving cavity 130, keeping the lens assembly 210 in macro mode.

[0132] If the user switches the focus mode of the lens assembly 210 from macro mode back to telephoto mode, the second processor 310 of the electronic device 300 can send a first instruction to the first processor 260 in the camera module 200. According to the first instruction, the first processor 260 causes the coil 1512 of each electromagnet 151 in the electromagnetic assembly 150 to receive an energizing current of the same magnitude and in the second direction. The top magnetic poles of the magnetized magnetic core 1511 are all N poles and are opposite to the magnetic poles of the corresponding permanent magnet 1221 facing the magnetic end of the electromagnet 151. At this time, each electromagnet 151 is attracted to the corresponding permanent magnet 1221. The magnetic attraction between the electromagnet 151 and the corresponding permanent magnet 1221 can overcome the magnetic attraction between the top magnetic end of the permanent magnet 1221 and the upper substrate 1111, thereby driving the lens bracket 121 and the lens assembly 210 to move along the optical axis towards the bottom of the receiving cavity 130.

[0133] like Figure 8 and Figure 9 As shown, when the magnetic assembly 122 and lens bracket 121 move to the bottom of the receiving cavity 130, the magnetic end of the bottom of each permanent magnet 1221 abuts against the top of the magnetic core 1511 of the corresponding electromagnet 151, and the distance between the lens assembly 210 and the image sensor 222 is minimized. At this time, the input current to all permanent magnets 1221 in the magnetic assembly 122 can be simultaneously disconnected. Through the magnetic attraction between the magnetic end of the bottom of each permanent magnet 1221 in the magnetic assembly 122 and the magnetic core 1511 of the corresponding electromagnet 151, the magnetic assembly 122, the lens bracket 121, and the lens assembly 210 can be fixed at the top and bottom of the receiving cavity 130, so that the lens assembly 210 maintains the telephoto mode.

[0134] Based on the camera module 200 provided in the application embodiment, after the second processor 310 in the electronic device 300 detects that the user has switched the focus mode of the lens assembly 210, it can control the magnetic force between the magnetic component 122 and the electromagnetic component 150 in the drive module 100 by controlling the direction of the current input to the electromagnetic component 150 in the drive module 100. This causes the lens bracket 121 and the lens assembly 210 to move parallel to the bottom of the housing 110 after a first distance under the magnetic attraction force generated between the electromagnetic component 150 and the magnetic component 122, or to the top of the housing 110 after a first distance under the magnetic repulsion force generated between the electromagnetic component 150 and the magnetic component 122. In other words, by changing the current direction of the electromagnetic component 150, the mover in the camera module 200 can be driven to move along the optical axis of the lens assembly 210 in the receiving cavity 130 of the housing 110, thereby changing the distance between the lens assembly 210 and the image sensor 222, so that the electronic device 300 is in either a telephoto mode or a macro mode, realizing two-stage automatic focusing.

[0135] The above description is only specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by 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, characterized in that, The application relates to a lens module. The lens module comprises a lens assembly (210), a first processor (260) and a driving module (100). The driving module (100) comprises a shell (110), a lens support (121), a magnetic assembly (122), a first circuit board (140) and an electromagnetic assembly (150). The magnetic assembly (122) is fixed on the periphery of the lens support (121), and the magnetic assembly (122) and the lens support (121) are located in a containing cavity (130) of the shell (110). The first circuit board (140) is fixed on the outer side of the shell (110) away from the lens support (121), the electromagnetic assembly (150) is fixed on the side of the first circuit board (140) facing the shell (110), and the first circuit board (140) is electrically connected with the electromagnetic assembly (150) and the first processor (260) respectively. The lens support (121), the shell (110) and the first circuit board (140) are all hollow structures for fixing the lens assembly (210). If the first processor (260) detects that the focusing mode of the lens assembly (210) is switched from a first focusing mode to a second focusing mode, the first processor (260) controls the input of a first direction of current to the first circuit board (140), the magnetic assembly (122) drives the lens support (121) and the lens assembly (210) to move a first distance in parallel away from the electromagnetic assembly (150) from the bottom of the shell (110) under the magnetic repulsion of the electromagnetic assembly (150), and the top of the magnetic assembly (122) abuts against the top of the shell (110). If the first processor (260) detects that the focusing mode of the lens assembly (210) is switched from the second focusing mode to the first focusing mode, the first processor (260) controls the input of a second direction of current to the first circuit board (140), the magnetic assembly (122) drives the lens support (121) and the lens assembly (210) to move the first distance in parallel to the electromagnetic assembly (150) from the top of the shell (110) under the magnetic attraction of the electromagnetic assembly (150), and the bottom of the magnetic assembly (122) abuts against the bottom of the shell (110), the first direction being opposite to the second direction.

2. The camera module of claim 1, wherein, The first distance is the height difference between the containing cavity (130) and the magnetic assembly (122). The first distance is expressed as: wherein, denotes the first distance, denotes a focal length of a lens (211) of the lens assembly (210), denotes a focus distance of the lens assembly (210) when in the second focus mode, denotes a focus distance of the lens assembly (210) when in the first focus mode.

3. The camera module according to claim 1 or 2, wherein, The magnetic assembly (122) comprises at least two permanent magnets (1221) which are symmetrically distributed on the periphery of the lens support (121). The electromagnetic assembly (150) comprises at least two electromagnets (151) which correspond to the permanent magnets (1221) one by one. One magnetic pole end of the permanent magnet (1221) is arranged opposite to one end of the corresponding electromagnet (151).

4. The camera module of claim 3, wherein, The shell (110) comprises an upper cover (111); The upper cover (111) comprises an upper substrate (1111) and an extension (1112) extending from an edge of the upper substrate (1111) towards the first circuit board (140); The upper substrate (1111) is a hollow structure, and the material of the upper substrate (1111) is a soft magnetic material.

5. The camera module of claim 4, wherein, The material of the extension (1112) is a non-magnetic material.

6. The camera module of claim 4 or 5, wherein, The shell (110) further comprises a base (112), and the upper cover (111) covers the base (112) and forms the accommodating cavity (130) with the base (112); The base (112) comprises a lower substrate (1121) and a surrounding edge (1122) extending from an edge of the lower substrate (1121) towards the upper substrate (1111); The lower substrate (1121) is a hollow structure, and the first circuit board (140) is fixed to a side of the lower substrate (1121) away from the lens holder (121); An outer side wall of the surrounding edge (1122) is provided with an avoiding groove (11221) for clamping with the extension (1112).

7. The camera module of claim 6, wherein, The lower substrate (1121) is provided with a through hole (11211) corresponding to each electromagnet (151); One end of the electromagnet (151) is opposite to one magnetic pole end of the corresponding permanent magnet (1221) through the through hole (11211), and the other magnetic pole end of the permanent magnet (1221) is opposite to the upper substrate (1111).

8. The camera module of claim 7, wherein, The electromagnet (151) is located in the corresponding through hole (11211).

9. The camera module according to any one of claims 3 to 8, wherein, An edge of the lens holder (121) is provided with a notch (1211) corresponding to the at least two permanent magnets (1221) one by one; The permanent magnet (1221) is fixed at the corresponding notch (1211).

10. The camera module of claim 1, wherein, The first focusing mode is a telephoto mode, and the second focusing mode is a macro mode.

11. An electronic device, comprising: The camera module comprises: The camera module according to any one of claims 1 to 10.

12. An electronic device, comprising: The camera module comprises: A lens assembly (210), a driving module (100) and a second processor (310), wherein the driving module (100) is electrically connected to the second processor (310); The driving module (100) comprises a shell (110), a lens holder (121), a magnetic assembly (122), a first circuit board (140) and an electromagnetic assembly (150); The magnetic assembly (122) is fixed to the periphery of the lens holder (121), and the magnetic assembly (122) and the lens holder (121) are located in the accommodating cavity (130) of the shell (110); The first circuit board (140) is fixed on the outside of the shell (110) away from the lens holder (121), the electromagnetic assembly (150) is fixed on the side of the first circuit board (140) facing the shell (110), and the first circuit board (140) is electrically connected with the electromagnetic assembly (150); The lens holder (121), the shell (110) and the first circuit board (140) are all hollow structures, and the hollow structures are used for fixing the lens assembly (210); If the second processor (310) detects that the focusing mode of the lens assembly (210) is switched from the first focusing mode to the second focusing mode, the second processor (310) controls the input of the power-on current in the first direction to the first circuit board (140), the magnetic assembly (122) drives the lens holder (121) and the lens assembly (210) to move in parallel from the bottom of the shell (110) to the direction away from the electromagnetic assembly (150) by a first distance under the magnetic repulsion of the electromagnetic assembly (150), and the top of the magnetic assembly (122) abuts against the top of the shell (110); If the second processor (310) detects that the focusing mode of the lens assembly (210) is switched from the second focusing mode to the first focusing mode, the second processor (310) controls the input of the power-on current in the second direction to the first circuit board (140), the magnetic assembly (122) drives the lens holder (121) and the lens assembly (210) to move in parallel from the top of the shell (110) to the direction close to the electromagnetic assembly (150) by the first distance under the magnetic attraction of the electromagnetic assembly (150), and the bottom of the magnetic assembly (122) abuts against the bottom of the shell (110), and the first direction is opposite to the second direction.

Images