CN110673296B

CN110673296B - Camera unit, camera module and mobile terminal

Info

Publication number: CN110673296B
Application number: CN201910979456.XA
Authority: CN
Inventors: 李昕; 赵宏原; 蒋麟军; 邓斌; 李得亮
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2016-12-14
Filing date: 2017-06-30
Publication date: 2022-05-17
Anticipated expiration: 2037-06-30
Also published as: CN110784629A; CN108476283B; CN110784629B; CN108476283A; WO2018107725A1; CN110673296A

Abstract

The application discloses unit of making a video recording, the unit of making a video recording includes first optics packaging body, first magnetism spare, second magnetism spare, third magnetism spare, balancing weight and first coil, first magnetism spare the second magnetism spare the third magnetism spare reaches the balancing weight radially centers on in proper order first optics packaging body, first coil distributes first magnetism spare with between the first optics packaging body and the third magnetism spare with between the first optics packaging body, first magnetism spare with the third magnetism spare sets up relatively and is bipolar magnet that is being magnetized, the second magnetism spare is unipolar magnet that is magnetized, the balancing weight is located first optics packaging body with another of camera module between the unit of making a video recording, be used for balancing the weight of second magnetism spare. The application also discloses a camera module and a mobile terminal. The magnetic interference of the two camera units is reduced, and the distance is shortened.

Description

Camera unit, camera module and mobile terminal

This application is a divisional application of chinese patent application having application number 201780007863.3 and application date 2017, 6 and 30, which claims priority from chinese patent application having application number 201611153055.1 and application date 2016, 12 and 14, and is incorporated herein by reference in its entirety.

Technical Field

The application relates to the technical field of camera equipment, in particular to a camera unit, a camera module and a mobile terminal.

Background

With the popularization of intelligent mobile terminals such as mobile phones and tablet computers, the requirements for generating high-resolution, high-image-quality and high-definition photos are also put on the camera unit integrated on the mobile terminal. The automatic focusing and optical anti-shake technology well improves the photographing or shooting effect, can effectively reduce the possibility of taking fuzzy photos in a low-light environment, avoids the influence of hand shake of a user on the quality of the photos when the user takes the photos, and improves the photographing effect. The camera module comprises two camera units, and the two camera units respectively capture pictures and can greatly improve the quality of the pictures after image processing.

Among the prior art, the voice coil motor that is used for realizing automatic zooming and optics anti-shake among the camera unit relies on four single-polarity magnets (having two magnetic poles) to drive the motion of optical packaging body, voice coil motor is great to other magnetic device of mobile terminal and external magnetic substance interference, to the camera module, mutual magnetic interference between two camera units is great, in order to avoid the effect of the automatic zooming and optics anti-shake of influence camera unit, need to increase the interval of two camera units, so both increased camera module assembly process's the degree of difficulty, the space of complete machine environment has been wasted again, the unable adaptation of dimensional design under having led to complete machine state environment, be unfavorable for the minimized design of camera module.

Content of application

In view of this, the present application provides a camera unit, a camera module and a mobile terminal, which are used to solve the problem that in the prior art, in order to avoid affecting the automatic zooming and optical anti-shake effects of the camera unit, the distance between two camera units needs to be increased, which is not favorable for the minimized design of the camera module.

In a first aspect, an embodiment of the present application provides a camera unit applied to a camera module, the camera unit includes a first optical package, a first magnetic member, a second magnetic member, a third magnetic member, a weight block, and a first coil, the first magnetic member, the second magnetic member, the third magnetic member and the weight member sequentially radially surround the first optical package, the first coils are distributed between the first magnetic part and the first optical packaging body and between the third magnetic part and the first optical packaging body, the first magnetic part and the third magnetic part are oppositely arranged and are both bipolar magnetized magnets, the second magnetic part is a unipolar magnetized magnet, the balancing weight is located between the first optical packaging body and the other camera shooting unit of the camera module and used for balancing the weight of the second magnetic piece. The first magnetic part and the third magnetic part of the bipolar magnetizing magnet reduce the magnetic interference of the magnetic part with the optical anti-shake function on the other camera unit and the whole environment, reduce the distance between the two camera units, reduce the difficulty of the camera module assembly process, save the space of the whole environment and facilitate the minimized design of the camera module.

In one embodiment, the first magnetic member and the second magnetic member each include a first magnetic portion and a second magnetic portion having opposite magnetic orientations, the first magnetic portion and the second magnetic portion are disposed along an axial direction of the first optical package, the first magnetic portion of the first magnetic member has an opposite magnetic orientation to the first magnetic portion of the second magnetic member, and the second magnetic portion of the first magnetic member has an opposite magnetic orientation to the second magnetic portion of the second magnetic member. The first magnetic part and the second magnetic part with opposite magnetic orientations form a converged magnetic field and reduce magnetic leakage, the magnetic field formed by the first magnetic part and the third magnetic part is interacted with the first coil to realize an automatic focusing function, and the magnetic interference of the magnetic part for the automatic focusing function on another camera unit and the whole environment is prevented by the converged magnetic field of the first magnetic part and the third magnetic part.

In one embodiment, the first magnetic member and the second magnetic member further include a non-magnetic portion, and the first magnetic portion and the second magnetic portion are fixedly connected through the non-magnetic portion. The non-magnetic part plays a role in isolating the first magnetic part from the second magnetic part, so that the first magnetic part and the second magnetic part are separated by a certain distance, and mutual magnetic interference between magnetic fields formed by the first magnetic part and the second magnetic part is prevented.

In one embodiment, the first and second magnetic parts each comprise a first end facing the first optical package and a second end facing away from the first optical package, the first and second ends being poles of the first or second magnetic part. The first and second ends form a magnetic field interacting with the first coil so that a Lorentz force of the first coil inputting a current is in an optical axis direction.

Specifically, the first optical package includes a first sidewall and a third sidewall that are disposed opposite to each other, the first sidewall faces the first magnetic element, the third sidewall faces the third magnetic element, and the first coil is wound around the first sidewall and the third sidewall. The first coil drives the first optical packaging body to move under the action of Lorentz force, so that the aim of focusing is fulfilled.

In one embodiment, the camera unit further includes a second coil, the second coil is located on the same side of the first magnetic member, the second magnetic member, and the third magnetic member, and the second coil is configured to interact with a magnetic field generated by the first magnetic member, the second magnetic member, and the third magnetic member. When current is input into the second coil, Lorentz force is generated under the action of the first magnetic piece, the second magnetic piece and the third magnetic piece to compensate displacement caused by shaking of the second optical packaging body, so that optical anti-shaking action is achieved, and shooting effect is improved.

In one embodiment, the magnetic force of the second magnetic member is twice that of the first magnetic member, and the magnetic force of the first magnetic member is the same as that of the third magnetic member, so that the second coil can generate enough lorentz force after current is input, the optical anti-shake effect is improved, and the shooting effect is improved.

In one embodiment, the first magnetic member and the third magnetic member are symmetrical with respect to the center of the first optical package, so that an input current of the first coil is easily controlled during an auto-focusing operation, and a lorentz force for realizing an auto-focusing function is easily controlled.

In one embodiment, the second magnetic member and the weight member are symmetrical with respect to a center of the first optical package to make the weight of the image pickup unit uniform.

In a second aspect, an embodiment of the present application further provides a camera module, where the camera module includes a second optical package and the camera unit described in any one of the above, the second optical package and the first optical package are respectively located on two opposite sides of the weight block, the camera module further includes a third coil and a fourth magnetic component, the third coil is wound around the periphery of the second optical package to form a closed loop structure, the fourth magnetic component is distributed around the periphery of the third coil, and the fourth magnetic component is used to generate a magnetic field to achieve auto-focusing and optical anti-shake of the second optical package. The first magnetic part and the third magnetic part of the bipolar magnetizing magnet reduce the magnetic interference of the magnetic part with the optical anti-shake function on the other camera unit and the whole environment, reduce the distance between the two camera units, reduce the difficulty of the camera module assembly process, save the space of the whole environment and facilitate the minimized design of the camera module.

In one embodiment, the camera module further includes a fourth coil, the fourth coil is located on the same side of each of the fourth magnetic members, and the fourth coil is configured to interact with a magnetic field generated by each of the fourth magnetic members. Under the action of the magnetic field, the third coil generates Lorentz force to compensate displacement caused by shaking of the second optical packaging body so as to play a role in optical anti-shaking and improve the shooting effect.

In one embodiment, the fourth magnetic member is a single polarity magnetized magnet. The manufacturing process of the single-polarity magnetized magnet is simple and the cost is low.

In one embodiment, the magnetic poles of the fourth magnetic member are distributed at one end of the fourth magnetic member facing the second optical package and at one end of the fourth magnetic member facing away from the second optical package, and the polarities of the ends of the fourth magnetic members facing the second optical package are the same. So that the lorentz force of the third coil of the input current is in the direction of the optical axis and the lorentz force of the fourth coil of the input current is in the direction perpendicular to the optical axis.

In one embodiment, the smallest distance between the weight block and the fourth magnetic member is not greater than 1 mm. The difficulty of the camera module 30 assembling process is reduced, the space of the whole machine environment is saved, and the minimized design of the camera module 30 is facilitated.

In one embodiment, the number of the fourth magnetic members is four, the fourth magnetic members are arranged in an angular distribution manner, so that the magnetic field formed by the fourth magnetic members is distributed uniformly, the lorentz force generated by the third coil and the fourth coil under the action of the magnetic field is easy to control, and the effects of automatic focusing and optical anti-shake are improved.

In a third aspect, an embodiment of the present application further provides a mobile terminal, including the camera module described in any one of the above. The first magnetic part and the third magnetic part of the bipolar magnetizing magnet reduce the magnetic interference of the magnetic part with the optical anti-shake function on the other camera shooting unit and the whole environment, reduce the distance between the two camera shooting units, reduce the difficulty of the camera module assembly process, save the space of the whole environment and facilitate the minimized design of the camera module and the mobile terminal.

The beneficial effect of this application is as follows: the first magnetic part and the third magnetic part are bipolar magnetized magnets, so that the magnetic circuits of the first magnetic part and the third magnetic part are converged, magnetic leakage is reduced, magnetic interference of the magnetic part with an automatic focusing function on another camera shooting unit and the whole machine environment is prevented, the weight of the second magnetic part is balanced by the weight block relative to the second magnetic part, the weight block is nonmagnetic, the second magnetic part is far away from the other camera shooting unit, the magnetic interference of the magnetic part with an optical anti-shake function on the other camera shooting unit and the whole machine environment is reduced, the distance between the two camera shooting units is shortened, the difficulty of the camera module assembling process is reduced, the space of the whole machine environment is saved, and the minimized design of the camera module is facilitated.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present invention, the drawings required to be used in the embodiments or the background art of the present invention will be described below.

Fig. 1 and fig. 2 are schematic structural diagrams of an image capturing unit provided in an embodiment of the present application.

Fig. 3 is a schematic diagram of a coil distribution of an imaging unit according to an embodiment of the present application.

Fig. 4 is a schematic view of distribution of magnetic members of an image pickup unit according to an embodiment of the present application.

Fig. 5 is a schematic cross-sectional view of a first magnetic element according to an embodiment of the present disclosure.

Fig. 6 is a schematic cross-sectional view of a second magnetic element according to an embodiment of the present application.

Fig. 7 is a schematic diagram of an image capturing unit according to an embodiment of the present application.

Fig. 8 and 9 are schematic structural diagrams of a camera module according to an embodiment of the present application.

Fig. 10 is a schematic diagram of coil distribution of a camera module according to an embodiment of the present application.

Fig. 11 is a schematic view illustrating distribution of magnetic members of a camera module according to an embodiment of the present application.

Fig. 12 is a schematic structural diagram of a camera module according to the second embodiment of the present application.

Fig. 13 is a schematic diagram of a mobile terminal according to an embodiment of the present application.

Detailed Description

The embodiments of the present invention will be described below with reference to the drawings.

The camera unit that this application embodiment provided is applied to the camera module, and the camera module includes two at least camera units that are used for catching the image, and wherein, at least one camera unit is the camera unit that this application embodiment provided.

Referring to fig. 1 and fig. 2, an image capturing unit 10 according to an embodiment of the present disclosure includes a first optical package 100, a first magnetic member 200, a second magnetic member 220, a third magnetic member 240, and a weight block 260. The first magnetic member 200, the second magnetic member 220, the third magnetic member 240 and the weight block 260 sequentially and radially surround the first optical package 100, specifically, the first optical package 100 is a set of devices such as an optical lens, a camera lens and a lens holder, the first optical package 100 is used for shooting a static or dynamic image and transmitting image information to a main board of the mobile terminal for processing and other operations, and the image information may be a photo or a video. In one embodiment, the first optical package 100 has an optical axis along the shooting direction, and the first magnetic member 200, the second magnetic member 220, the third magnetic member 240 and the weight member 260 are symmetrically distributed around the optical axis. In this embodiment, as shown in fig. 1, the optical axis direction of the first optical package 100 is taken as the Z axis, and a plane perpendicular to the Z axis is taken as the XY plane.

The first magnetic member 200 and the third magnetic member 240 are bipolar magnetized magnets, which are disposed opposite to each other. The second magnetic member 220 is a single-polarity magnetized magnet, the weight block 260 has no magnetism, the weight block 260 is disposed opposite to the second magnetic member 220, in the camera module, the weight block 260 is located between the first optical package 100 and another camera unit 10 of the camera module, and the weight block 260 is used for balancing the weight of the second magnetic member 220.

With reference to fig. 2 and 3, fig. 2 is an isometric view of the image pickup unit 10 of fig. 1 with the first optical package 100 hidden, and fig. 3 is a schematic diagram of the coil distribution of the image pickup unit 10 in the XY plane. In this embodiment, the camera unit 10 further includes a first coil 320, the first coil 320 is located between the first magnetic member 200 and the first optical package 100, and between the third magnetic member 240 and the first optical package 100, and the first coil 320 is configured to interact with magnetic fields generated by the first magnetic member 200 and the third magnetic member 240. In this embodiment, the number of the first coils 320 is two, and the two first coils 320 are symmetrically distributed on two sides of the first optical package 100. In one embodiment, the first coil 320 is wound around the Y axis, so that the direction of the lorentz force generated by the first coil 320 when the current is input overlaps the Z axis. Specifically referring to fig. 7, fig. 7 is a schematic diagram of the operation of the image capturing unit 10 in the YZ plane, and the focusing process of the image capturing unit 10 is as follows: when a current is input into the first coil 320 in the magnetic field generated by the first magnetic member 200 and the third magnetic member 240, the first coil 320 generates a lorentz force in a positive direction or a negative direction of the Z axis (i.e., the optical axis) by the magnetic field of the first coil 320, and the first magnetic member 200 and the third magnetic member 240 are fixed in the Z axis direction with respect to the mobile terminal on which the imaging unit 10 is mounted, so that the lorentz force pushes the first coil 320 to move in the positive direction or the negative direction of the Z axis. In this embodiment, the first coil 320 is fixed on the first optical package 100, that is, the first coil 320 and the first optical package 100 form a whole and have the same degree of freedom, so that the lorentz force pushes the first optical package 100 to move along the optical axis, the first optical package 100 approaches or leaves an object to be photographed, and the positional relationship between the focal point of the first optical package 100 and the object to be photographed is adjusted, thereby implementing the focusing operation. In the present embodiment, with the magnetic field distribution shown in fig. 7, the lorentz force is positive along the Z axis according to the left-hand rule, and the magnitude and direction of the lorentz force are determined according to the magnetic field distribution and the magnitude and flow direction of the current in the first coil 320.

With reference to fig. 2, 4 and 5, fig. 4 is a schematic diagram of the distribution of the magnetic members of the imaging unit 10 in the XY plane, and fig. 5 is a schematic diagram of the cross section of the first magnetic member 200 in the YZ plane. The first magnetic member 200 and the third magnetic member 240, which are magnetized in a bipolar manner, have four magnetic poles, namely two pairs of N poles and S poles, the magnetic field formed by the first magnetic member 200 and the third magnetic member 240 is used for realizing the auto-focusing function of the camera unit 10, the magnetic paths of the first magnetic member 200 and the third magnetic member 240 are converged, and the magnetic flux leakage is reduced, so that the magnetic interference of the magnetic members used for the auto-focusing function on the other camera unit 10 and the environment of the whole camera unit is prevented. Specifically, the first magnetic member 200 and the third magnetic member 240 each include a first magnetic part 22 and a second magnetic part 24 with opposite magnetic orientations, the first magnetic part 22 and the second magnetic part 24 are distributed along the direction of the optical axis of the first optical package 100 (i.e., the Z-axis direction), the first magnetic part 22 of the first magnetic member 200 and the first magnetic part 22 of the third magnetic member 240 have opposite magnetic orientations, and the second magnetic part 24 of the first magnetic member 200 and the second magnetic part 24 of the second magnetic member 220 have opposite magnetic orientations. The specific meaning of opposite magnetic orientation is described below: referring to fig. 7, the direction of the arrows in the figure is magnetic orientation, and the magnetic field lines are directed from the S pole to the N pole inside the first magnetic part 22 or the second magnetic part 24. Outside the first magnetic part 22 or the second magnetic part 24, the magnetic field lines point from the N pole to the S pole. The internal magnetic orientation of the first magnetic part 22 of the first magnetic member 200 is a positive Y-axis direction, the external magnetic orientation is a negative Y-axis direction, the internal magnetic orientation of the first magnetic part 22 of the third magnetic member 240 is a negative Y-axis direction, and the external magnetic orientation is a positive Y-axis direction, so that the magnetic orientations of the first magnetic part 22 of the first magnetic member 200 and the first magnetic part 22 of the third magnetic member 240 are opposite; the second magnetic part 24 of the first magnetic member 200 has an internal magnetic orientation of a negative Y-axis and an external magnetic orientation of a positive Y-axis, and the second magnetic part 24 of the third magnetic member 240 has an internal magnetic orientation of a positive Y-axis and an external magnetic orientation of a negative Y-axis, so that the second magnetic part 24 of the first magnetic member 200 and the second magnetic part 24 of the second magnetic member 220 have opposite magnetic orientations.

In this embodiment, the magnetic orientations of the first magnetic part 22 and the second magnetic part 24 of the first magnetic member 200 are opposite, and the magnetic orientations of the first magnetic part 22 and the second magnetic part 24 of the third magnetic member 240 are opposite. Referring to fig. 5, taking the first magnetic member 200 as an example, the internal magnetic orientation of the first magnetic part 22 is a positive Y-axis direction, the external magnetic orientation is a negative Y-axis direction, the internal magnetic orientation of the second magnetic part 24 is a negative Y-axis direction, and the external magnetic orientation is a positive Y-axis direction, so that the magnetic orientations of the first magnetic part 22 and the second magnetic part 24 of the first magnetic member 200 are opposite. Referring to fig. 4, arrows in the drawing indicate magnetic orientations inside the first magnetic member 200, the second magnetic member 220 and the third magnetic member 240, and in the first magnetic member 200, two opposite arrows respectively indicate internal magnetic orientations of the first magnetic portion 22 and the second magnetic portion 24 of the first magnetic member 200, that is, the magnetic orientations of the first magnetic portion 22 and the second magnetic portion 24 of the first magnetic member 200 are opposite; in the third magnetic member 240, two opposite arrows respectively indicate the internal magnetic orientations of the first magnetic part 22 and the second magnetic part 24 of the third magnetic member 240, i.e., the magnetic orientations of the first magnetic part 22 and the second magnetic part 24 of the third magnetic member 240 are opposite. The first magnetic part 22 and the second magnetic part 24 with opposite magnetic orientations form a converged magnetic field to reduce magnetic leakage, the magnetic field formed by the first magnetic part 200 and the third magnetic part 240 interacts with the first coil 320 to realize the auto-focusing function, and the magnetic field converged by the first magnetic part 200 and the third magnetic part 240 prevents the magnetic interference of the magnetic part for the auto-focusing function on the other image pickup unit 10 and the environment of the whole machine.

Specifically, in the first magnetic member 200, the first magnetic part 22 and the second magnetic part 24 are distributed along the Z-axis direction, and the distance between the first magnetic part 22 and the first optical package 100 is the same as the distance between the second magnetic part 24 and the first optical package 100, so that the magnetic field generated by the first magnetic member 200 or the third magnetic member 240 is uniform. In one embodiment, the first magnetic part 22 and the second magnetic part 24 are made of ndfeb material by a bipolar magnetizing process.

In one embodiment, the first and second

magnetic members

200 and 220 further include a non-magnetic portion 26, and the first and second

magnetic portions

22 and 24 are fixedly connected by the non-magnetic portion 26. Specifically, the non-magnetic portion 26 is fixedly connected between the first magnetic portion 22 and the second magnetic portion 24 to form the first magnetic member 200 or the third magnetic member 240, and the non-magnetic portion 26 functions to isolate the first magnetic portion 22 from the second magnetic portion 24, so that the first magnetic portion 22 and the second magnetic portion 24 are separated by a certain distance, and mutual magnetic interference between magnetic fields formed by the first magnetic portion 22 and the second magnetic portion 24 is prevented.

In this embodiment, the first magnetic part 22 and the second magnetic part 24 each include a first end 20a facing the first optical package 100 and a second end 20b facing away from the first optical package 100, and the first end 20a and the second end 20b are magnetic poles of the first magnetic part 22 or the second magnetic part 24. Specifically, the magnetic poles include N-poles and S-poles, and the magnetic poles of the first magnetic part 22 and the second magnetic part 24 are distributed at both ends of the first magnetic part 200 and the third magnetic part 240 in the width direction, i.e., the first end 20a and the second end 20b in the Y-axis direction, to form a magnetic field interacting with the first coil 320, so that the lorentz force of the first coil 320 to which current is input is in the Z-axis direction.

Referring to fig. 2 and fig. 6, fig. 6 is a schematic cross-sectional view of the second magnetic member 220 in the XZ plane. The second magnetic member 220 magnetized in a single polarity has two magnetic poles, i.e., a pair of N pole and S pole, and the magnetic field formed by the second magnetic member 220, the first magnetic member 200, and the third magnetic member 240 is used to realize the optical anti-shake function of the image pickup unit 10. Specifically, the second magnetic member 220 includes a first side end 22a facing the first optical package 100 and a second side end 22b facing away from the first optical package 100, and the first side end 22a and the second side end 22b are magnetic poles of the second magnetic member 220. Specifically, the magnetic poles include N poles and S poles, and the first side end 22a and the second side end 22b are distributed at both ends of the second magnetic member 220 in the width direction, i.e., in the X-axis direction, to form a magnetic field interacting with the second coil 340, so that the lorentz force of the second coil 340 inputting current is in the X-axis direction.

The second magnetic member 220 is disposed at an end of the camera unit 10 away from another camera unit 10, so as to reduce magnetic interference of the second magnetic member 220 to another camera unit 10, thereby reducing magnetic interference of the magnetic member for optical anti-shake function to another camera unit 10 and the environment of the whole camera unit. Therefore, the camera unit 10 provided by the embodiment of the application reduces the distance between two camera units 10 in the camera module 30, reduces the difficulty of the assembly process of the camera module 30, saves the space of the whole machine environment, and is beneficial to the minimized design of the camera module 30.

In one embodiment, the first magnetic member 200, the second magnetic member 220, the third magnetic member 240 and the weight block 260 are all in a strip shape, and the length direction of the first magnetic member 200 and the length direction of the third magnetic member 240 are along the X-axis direction, and the length direction of the second magnetic member 220 and the length direction of the weight block 260 are along the Y-axis direction.

In one embodiment, the first optical package 100 includes a first sidewall 102 and a third sidewall 106 disposed opposite to each other, the first sidewall 102 faces the first magnetic element 200, the third sidewall 106 faces the third magnetic element 240, and the first coil 320 is wound around the first sidewall 102 and the third sidewall 106, so that the first coil 320 drives the first optical package 100 to move under the action of the lorentz force, thereby achieving the purpose of focusing.

With reference to fig. 2 and fig. 3, in the present embodiment, the image capturing unit 10 further includes a second coil 340, the second coil 340 is located on the same side of the first magnetic member 200, the second magnetic member 220, and the third magnetic member 240, and the second coil 340 is used for interacting with the magnetic fields generated by the first magnetic member 200, the second magnetic member 220, and the third magnetic member 240. Specifically, the number of the second coils 340 is three, and one second coil 340 is disposed on each of one side of the first magnetic member 200, one side of the second magnetic member 220, and one side of the third magnetic member 240. In one embodiment, the first optical anti-shake is folded around the Z axis so that the direction of the lorentz force generated by the second coil 340 when the current is input is overlapped with the X axis or the Y axis. Specifically, referring to fig. 7, taking the Y-axis direction as an example, the second coil 340 is located in the magnetic field generated by the first magnetic member 200 and the third magnetic member 240, when it is detected that the first optical package 100 is shaken and moves in the XY plane direction, the system inputs a current into the second coil 340, and under the action of the magnetic field, the first coil 320 generates a lorentz force along the positive direction or the negative direction of the Y-axis, thereby compensating the displacement caused by shaking of the first optical package 100 to perform the optical anti-shake action. In the present embodiment, the lorentz force is positive along the Y axis according to the left-hand rule under the magnetic field distribution shown in fig. 7, and in one embodiment, the magnitude and direction of the lorentz force are determined according to the magnetic field distribution and the magnitude and flow direction of the current in the second coil 340.

In this embodiment, the first optical package 100 further includes a second sidewall 104 and a fourth sidewall 108 connecting the first sidewall 102 and the third sidewall 106, and the second sidewall 104 is disposed opposite to the fourth sidewall 108. The second side wall 104 faces the second magnetic member 220, the second magnetic member 220 is a single-polarity magnetized magnet, that is, the second magnetic member 220 includes two magnetic poles, and the magnetic poles are distributed at one end of the second magnetic member 220 facing the second side wall 104 and one end of the second magnetic member 220 facing away from the second side wall 104, so that a magnetic field formed by the second magnetic member 220 passes through the second coil 340, and a lorentz force generated after a current is input to the second coil 340 is along the X-axis direction. The resultant force of the lorentz forces generated by the second coil 340 under the action of the first magnetic element 200, the second magnetic element 220 and the third magnetic element 240 compensates for the jitter displacement of the first optical package 100, thereby achieving the optical anti-jitter function. The fourth side wall 108 faces the weight block 260, the weight block 260 is used for balancing the weight of the second magnetic member 220, and the weight block 260 has no magnetism, so that magnetic interference to another camera unit 10 and the whole environment is reduced.

The first magnetic part 200 and the third magnetic part 240 are bipolar magnetized magnets, so that magnetic circuits of the first magnetic part 200 and the third magnetic part 240 are converged, magnetic flux leakage is reduced, magnetic interference of the magnetic part for the automatic focusing function on another camera unit 10 and the whole machine environment is prevented, the weight block 260 balances the weight of the second magnetic part 220 relative to the second magnetic part 220, the weight block 260 has no magnetism, the second magnetic part 220 is far away from the other camera unit 10, the magnetic interference of the magnetic part for the optical anti-shake function on the other camera unit 10 and the whole machine environment is reduced, the distance between the two camera units 10 is reduced, the difficulty of the camera module assembly process is reduced, the space of the whole machine environment is saved, and the minimized design of the camera module is facilitated.

In the camera unit 10 provided in the embodiment of the present application, the magnetic forces of the first magnetic element 200 and the third magnetic element 240 are equal, so that the lorentz forces generated by the first magnetic element 200, the second magnetic element 220, and the third magnetic element 240 on the second coil 340 are uniform, the resultant force of the lorentz forces can be adjusted by adjusting the input current, the optical anti-shake effect is improved, and the shooting effect is improved. In one embodiment, the magnetic force of the second magnetic member 220 is twice that of the first magnetic member 200, so as to ensure that the second coil 340 can generate sufficient lorentz force along the X-axis direction after inputting current. Since the second magnetic member 220 is located on a side of the first optical package 100 away from the other image capturing unit 10, even if the magnetic force of the second magnetic member 220 is increased, the magnetic interference to the other image capturing unit 10 and the environment of the whole device will not be significantly increased.

In the imaging unit 10 provided in the embodiment of the present application, the first magnetic member 200 and the third magnetic member 240 are symmetrical with respect to the center of the first optical package 100. In one embodiment, the distance between the first magnetic member 200 and the corresponding first coil 320 is the same as the distance between the third magnetic member 240 and the corresponding first coil 320, and the magnetic force between the first magnetic member 200 and the third magnetic member 240 is the same, so that the input current of the first coil 320 is easily controlled during the auto-focusing operation, and the lorentz force for realizing the auto-focusing function is easily controlled.

In the camera unit 10 provided in the embodiment of the present application, the second magnetic member 220 and the weight block 260 are symmetrical with respect to the center of the first optical package 100, and in one embodiment, the second magnetic member 220 and the weight block 260 have the same weight, so that the weight of the camera unit 10 is uniform.

The embodiment of the present application further provides a camera module 30, which includes at least two camera units 10. Referring to fig. 8 and 9, a camera module 30 according to an embodiment of the present disclosure includes a second optical package 400 and a camera unit 10 according to an embodiment of the present disclosure, the second optical package 400 and the first optical package 100 are respectively located at two opposite sides of the weight block 260, the camera module 30 further includes a plurality of fourth magnetic members 600 radially distributed around the second optical package 400, and the fourth magnetic members 600 are configured to generate a magnetic field to achieve auto-focusing and optical anti-shake of the second optical package 400. Specifically, the second optical package 400 is a set of devices such as an optical lens, a camera lens, and a lens holder, and the second optical package 400 is used for capturing an image and transmitting the image information to a main board of the mobile terminal for processing and the like. In an embodiment, the second optical package 400 includes an optical axis along the shooting direction, the fourth magnetic member 600 uses the optical axis as the center for distribution, the fourth magnetic member 600 realizes the auto-focusing and optical anti-shake functions of the second optical package 400, because the magnetic paths of the first magnetic member 200 and the third magnetic member 240 converge, the distance between the second magnetic member 220 and the fourth magnetic member 600 is far, the magnetic interference between the two camera units 10 is small, the distance between the two camera units 10 in the camera module 30 is reduced, the difficulty of the camera module 30 assembly process is reduced, the space of the whole environment is saved, and the minimized design of the camera module 30 is facilitated.

With reference to fig. 9 and 10, fig. 10 is a schematic diagram of the coil distribution of the camera module 30 in the XY plane. In this embodiment, the camera module 30 further includes a third coil 520, the third coil 520 is radially wound on the surface of the second optical package 400, and the third coil 520 is used for interacting with the magnetic field generated by the fourth magnetic element 600. Specifically, the second focusing coil is wrapped around the second optical package 400 with the Z axis as the center, so that the direction of the lorentz force generated by the third coil 520 when inputting current overlaps with the Z axis. The third coil 520 is located in the magnetic field generated by the fourth magnetic member 600, and when a current is input into the third coil 520, the third coil 520 generates a lorentz force in the positive or negative direction along the Z-axis under the action of the magnetic field, thereby pushing the second optical package 400 to perform a corresponding auto-focusing operation. In one embodiment, the magnitude and direction of the lorentz force is determined by the magnetic field distribution, the magnitude and direction of the current in third coil 520.

In this embodiment, the camera module 30 further includes a fourth coil 540, the fourth coil 540 is located on the same side of each fourth magnetic member 600, and the fourth coil 540 is configured to interact with the magnetic field generated by each fourth magnetic member 600. Specifically, the number of the fourth coils 540 is four, and one fourth coil 540 is disposed on one side of each fourth magnetic member 600. In one embodiment, the second optical anti-shake is folded around the Z axis so that the direction of the lorentz force generated by the fourth coil 540 when a current is input is overlapped with the X axis or the Y axis. Taking the Y-axis direction as an example, the fourth coil 540 is located in the magnetic field generated by the fourth magnetic member 600, and when a current is input into the fourth coil 540, the third coil 520 generates a lorentz force in the positive or negative direction of the Y-axis under the action of the magnetic field, thereby compensating for the displacement caused by the shake of the second optical package 400 and performing the optical anti-shake operation. In one embodiment, the magnitude and direction of the lorentz force are determined according to the magnetic field distribution, the magnitude and flow direction of the current in the fourth coil 540.

With reference to fig. 9 and fig. 11, fig. 11 is a schematic diagram of the distribution of the magnetic members of the camera module 30 in the XY plane. In this embodiment, the fourth magnetic member 600 is a single-pole magnetized magnet, specifically, the fourth magnetic member 600 includes two magnetic poles, i.e., a pair of N-pole and S-pole, and the arrow in fig. 11 indicates the magnetic orientation of the fourth magnetic member 600. The single-polarity magnetized magnet is low in manufacturing cost, the second optical package 400 realizes an auto-focusing function in the magnetic field formed by the fourth magnetic member 600 through the third coil 520, and the second optical package 400 realizes an optical anti-shake function in the magnetic field formed by the fourth magnetic member 600 through the fourth coil 540.

In this embodiment, the magnetic poles of the fourth magnetic element 600 are distributed at one end of the fourth magnetic element 600 facing the second optical package 400 and one end of the fourth magnetic element 600 facing away from the second optical package 400, and the polarities of the ends of the fourth magnetic elements 600 facing the second optical package 400 are the same. Specifically, the magnetic poles include N and S poles, and the fourth magnetic member 600 forms a magnetic field interacting with the third coil 520, thereby causing the lorentz force of the third coil 520 to be inputted with current to be in the Z-axis direction and causing the lorentz force of the fourth coil 540 to be inputted with current to be in the X-axis or Y-axis direction.

In one embodiment, as shown in fig. 11, the number of the fourth magnetic members 600 is four, and the fourth magnetic members 600 are arranged in an angular distribution manner, specifically, the cross section of the second optical package 400 is square, and the four fourth magnetic members 600 are respectively located at positions corresponding to four corners of the second optical package 400. The distribution of the angular magnets makes the magnetic field formed by the fourth magnetic element 600 uniform, and the lorentz forces generated by the third coil 520 and the fourth coil 540 under the action of the magnetic field are easy to control, thereby improving the effects of auto-focusing and optical anti-shake.

In the camera module 30 provided in the embodiment of the present application, the minimum distance between the weight block 260 and the fourth magnetic member 600 is not greater than 1 mm. Because the magnetic interference between two camera units 10 is less, the distance between the camera units 10 is not more than 1 mm, the difficulty of the camera module 30 assembling process is reduced, the space of the whole machine environment is saved, and the minimized design of the camera module 30 is facilitated.

Referring to fig. 12, a camera module 30 provided in the second embodiment of the present application includes two camera units 10 provided in the second embodiment of the present application, and the two camera units 10 are symmetrically distributed, and fig. 12 only shows an arrangement manner of magnetic members. The magnetic circuit convergence of the first magnetic part 200 and the third magnetic part 240 of each camera unit 10, reduce the magnetic leakage, the magnetic interference of the magnetic part for the automatic focusing function to another camera unit 10 and the whole machine environment is prevented, the weight 260 sets up the weight of the second magnetic part 220 relatively to the second magnetic part 220, the weight 260 has no magnetism, the second magnetic part 220 is far away from another camera unit 10, the magnetic interference of the magnetic part for the optical anti-shake function to another camera unit 10 and the whole machine environment is reduced, the distance between the two camera units 10 is reduced, the difficulty of the camera module 30 assembling process is reduced, the space of the whole machine environment is saved, and the minimized design of the camera module 30 is facilitated.

Referring to fig. 13, an embodiment of the present application further provides a mobile terminal 80 including the camera module 30 according to the embodiment of the present application. The camera module 30 is disposed on the mobile terminal 80 for capturing images and transmitting image information to the system motherboard for processing or displaying through the display panel. The mobile terminal 80 provided in the embodiment of the present application includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, and the like.

The magnetic circuit convergence of first magnetic part 200 and third magnetic part 240, reduce the magnetic leakage, the magnetic interference of the magnetic part that has been used for the auto-focus function to another camera unit 10 and complete machine environment has been prevented, the weight 260 sets up the weight that has balanced second magnetic part 220 relative to second magnetic part 220, weight 260 is nonmagnetic, another camera unit 10 has been kept away from to second magnetic part 220, the magnetic interference of the magnetic part that is used for optics anti-shake function to another camera unit 10 and complete machine environment has been reduced, reduce the interval of two camera units 10, the degree of difficulty of camera module 30 packaging technology has been reduced, the space of complete machine environment has been practiced thrift, be favorable to camera module 30's minimizing design. Furthermore, the magnetic paths of the first magnetic member 200 and the third magnetic member 240 converge to reduce the magnetic flux leakage, thereby reducing the magnetic interference of the dual camera module 30 with the peripheral components, for example, components such as a headphone and a speaker are provided around the dual camera module 30. Because the design of magnetic circuit convergence can reduce the distance between two camera modules 30 and the peripheral component, and do not influence respective work effect, consequently, this application can also promote mobile terminal space utilization for arrange between the component can be compacter.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present application, and these modifications or substitutions should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A camera module is characterized by comprising a first camera unit and a second camera unit;

the first camera shooting unit comprises a first optical packaging body, a first magnetic part, a second magnetic part, a third magnetic part, a balancing weight and a first coil, wherein the first magnetic part, the second magnetic part, the third magnetic part and the balancing weight sequentially and radially surround the first optical packaging body, the first coil is distributed between the first magnetic part and the first optical packaging body and between the third magnetic part and the first optical packaging body, the first magnetic part and the third magnetic part are oppositely arranged and respectively provided with four magnetic poles, the second magnetic part is provided with two magnetic poles, the balancing weight is positioned between the first optical packaging body and the second camera shooting unit and is used for balancing the weight of the second magnetic part, and the balancing weight is not provided with magnetism;

the second camera unit comprises a second optical packaging body, and the second optical packaging body and the first optical packaging body are respectively positioned at two opposite sides of the balancing weight.

2. The camera module according to claim 1, wherein the first magnetic member and the second magnetic member each include a first magnetic portion and a second magnetic portion having opposite magnetic orientations, the first magnetic portion and the second magnetic portion are disposed along an axial direction of the first optical package, the first magnetic portion of the first magnetic member has an opposite magnetic orientation to the first magnetic portion of the second magnetic member, and the second magnetic portion of the first magnetic member has an opposite magnetic orientation to the second magnetic portion of the third magnetic member.

3. The camera module according to claim 2, wherein the first magnetic member and the second magnetic member further comprise a non-magnetic portion, and the first magnetic portion and the second magnetic portion are fixedly connected through the non-magnetic portion.

4. The camera module of claim 3, wherein the first magnetic portion and the second magnetic portion each include a first end facing the first optical package and a second end facing away from the first optical package, the first end and the second end being poles of the first magnetic portion or the second magnetic portion.

5. The camera module according to claim 4, wherein the first optical package includes a first sidewall and a third sidewall opposite to each other, the first sidewall faces the first magnetic member, the third sidewall faces the third magnetic member, and the first coil is folded around the first sidewall and the third sidewall.

6. The camera module according to claim 5, wherein the first camera unit further comprises a second coil, the second coil is located on the same side of the first magnetic member, the second magnetic member, and the third magnetic member, and the second coil is configured to interact with a magnetic field generated by the first magnetic member, the second magnetic member, and the third magnetic member.

7. The camera module according to any one of claims 1 to 5, wherein the magnetic force of the second magnetic member is twice the magnetic force of the first magnetic member, and the magnetic force of the first magnetic member is the same as the magnetic force of the third magnetic member.

8. The camera module according to any one of claims 1 to 5, wherein the first magnetic member and the third magnetic member are symmetrical with respect to a center of the first optical package.

9. The camera module of any one of claims 1-5, wherein the second magnetic member and the weight member are symmetrical with respect to a center of the first optical package.

10. The camera module of any one of claims 1-5, wherein:

the second camera further comprises a third coil and fourth magnetic pieces, the third coil is wound on the periphery of the second optical packaging body to form a closed annular structure, the fourth magnetic pieces are distributed on the periphery of the third coil, the minimum distance between the balancing weight and the fourth magnetic pieces is not more than 1 millimeter, the number of the fourth magnetic pieces is four, and the fourth magnetic pieces are arranged in an angular distribution mode.

11. The camera module of claim 10, further comprising a fourth coil on a same side of each of said fourth magnetic members.

12. The camera module of claim 11, wherein each of the fourth magnetic members has two poles.

13. The camera module according to claim 12, wherein the magnetic poles of each of the fourth magnetic members are distributed at an end of each of the fourth magnetic members facing the second optical package and an end of each of the fourth magnetic members facing away from the second optical package, and the polarities of the ends of the fourth magnetic members facing the second optical package are the same.

14. An electronic device, comprising the camera module according to any one of claims 1 to 13.