CN213581538U

CN213581538U - lens drive

Info

Publication number: CN213581538U
Application number: CN202021249400.3U
Authority: CN
Inventors: 史卫领; 郭顺; 王洪兴
Original assignee: Chengrui Optics Changzhou Co Ltd
Current assignee: Chengrui Optics Changzhou Co Ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-06-29
Anticipated expiration: 2030-06-30
Also published as: WO2022000538A1

Abstract

The utility model discloses a lens driving device. The lens driving device comprises a casing with an accommodating space; and a lens barrel, wherein the lens barrel is arranged in the accommodating space and is rotatably connected with the casing. A lens assembly is housed in the lens barrel; a first drive assembly that drives the lens barrel to rotate in a direction perpendicular to the optical axis of the lens assembly, the first drive assembly is arranged on the housing and the lens barrel and a second drive assembly that drives the lens barrel to rotate around the optical axis of the lens assembly, the second drive assembly is disposed between the housing and the lens barrel, and the second drive assembly It includes a second driving coil and a second magnetic member arranged oppositely, one of the second driving coil and the second magnetic member is connected to the housing, and the other is connected to the lens barrel; wherein, the second The numbers of the magnetic parts and the second driving coils disposed opposite to the second magnetic parts are not equal.

Description

Lens driving device

[ technical field ] A method for producing a semiconductor device

The utility model relates to a drive technical field of camera lens module especially relates to a camera lens drive arrangement.

[ background of the invention ]

Recently, with the development of high performance and miniaturization of electronic products, camera modules have been commonly applied to mobile devices such as cellular phones, notebook computers, and tablet PCs. In general, an image pickup module includes a lens, an auto-focusing device for adjusting a focus by moving an optical system with respect to an optical axis, an image sensor (e.g., COMS and CCD) for converting an optical signal into an electrical signal, and the like.

When a user takes an Image or a video, if the user shakes his or her body or hand, the Image may be blurred, and therefore, the imaging module generally further includes an Optical Image Stabilization (OIS) device.

However, the conventional optical anti-shake apparatus can only achieve anti-shake in a certain direction of the lens, and the anti-shake effect is not good, so how to achieve a better anti-shake design of the lens is a popular subject of research by those skilled in the art.

[ Utility model ] content

The utility model aims at disclosing a lens driving device.

The utility model discloses an aim at adopts following technical scheme to realize, provides a camera lens drive arrangement, camera lens drive arrangement includes:

a housing having an accommodating space;

the lens barrel is arranged in the accommodating space and is rotationally connected with the shell, and a lens assembly is accommodated in the lens barrel;

the first driving assembly drives the lens barrel to rotate around a direction perpendicular to the optical axis of the lens assembly, and the first driving assembly is arranged between the shell and the lens barrel; and

the second driving assembly is arranged between the shell and the lens barrel and comprises a second driving coil and a second magnetic part which are oppositely arranged, one of the second driving coil and the second magnetic part is connected with the shell, and the other one of the second driving coil and the second magnetic part is connected with the lens barrel;

the second magnetic pieces and the second driving coils arranged opposite to the second magnetic pieces are not equal in number.

Preferably, the second driving coil includes at least one, each of the second driving coils corresponds to at least two of the second magnetic members, and in at least two of the second magnetic members corresponding to the same second driving coil, the magnetizing directions of adjacent second magnetic members are opposite.

Preferably, the second magnetic member includes at least one, each of the second magnetic members corresponds to at least two of the second driving coils, and in at least two of the second driving coils corresponding to the same second magnetic member, the directions of currents applied to adjacent second driving coils are opposite.

Preferably, the lens barrel includes an outer side wall spaced apart from the housing, the lens driving device includes at least two second driving assemblies, and the at least two second driving assemblies are wound around the outer side wall and spaced apart from and disposed adjacent to the second driving assemblies; and the adjacent second magnetic pieces are arranged at intervals.

Preferably, the second driving coil and the second magnetic member of each second driving assembly are located on a plane parallel to the outer sidewall, and the second driving coil and the second magnetic member of each second driving assembly are opposite and spaced apart from each other.

Preferably, the shell comprises a bottom plate, side plates surrounding the bottom plate and a cover plate connected with the side plates and arranged at intervals with the bottom plate;

the lens barrel comprises a bottom plate, side plates and a cover plate, wherein the bottom plate, the side plates and the cover plate are enclosed into an accommodating space, an opening communicated with the accommodating space is formed in the cover plate, and the lens barrel is accommodated in the accommodating space and is rotationally connected with the bottom plate.

Preferably, the bottom plate is provided with a first fulcrum portion, and one side of the lens barrel, which is far away from the opening, is provided with a second fulcrum portion rotatably connected with the first fulcrum portion.

Preferably, either one of the first fulcrum portion and the second fulcrum portion is a spherical protrusion, and the other one is a groove fitted with the spherical protrusion.

Preferably, the first driving assembly includes a first driving coil and a first magnetic member, which are oppositely disposed, one of the first driving coil and the first magnetic member is connected to the housing, the other one of the first driving coil and the first magnetic member is connected to the lens barrel, and the first driving assembly and the second driving assembly are disposed at an interval along the optical axis direction of the lens assembly.

Preferably, the first driving assemblies include at least two, and at least two of the first driving assemblies are wound on the outer side wall and are arranged adjacent to the first driving assemblies at intervals.

Preferably, the plane on which the first driving coil and the first magnetic member of each first driving assembly are located is parallel to the outer side wall, and the first driving coil and the first magnetic member of each first driving assembly are arranged oppositely and at intervals.

Preferably, the lens driving device further includes an elastic assembly elastically supporting the lens barrel, and the elastic assembly includes a first connecting portion connected to the lens barrel, a second connecting portion connected to the housing, and an elastic member disposed between and elastically connecting the first connecting portion and the second connecting portion.

Compared with the prior art, the utility model provides a camera lens drive arrangement has following advantage:

the first driving assembly and the second driving assembly are arranged and are arranged between the shell and the lens barrel, so that the lens barrel can be driven to rotate around the direction vertical to the optical axis of the lens assembly by the first driving assembly; and the second driving component is utilized to drive the lens barrel to rotate around the optical axis of the lens component, so that the anti-shake of the lens component in multiple directions such as the pitching direction, the deflection direction and the rolling direction is realized, and the anti-shake effect is better.

[ description of the drawings ]

Fig. 1 is a schematic perspective view of a lens driving device according to a first embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a lens driving device along the A-A direction;

FIG. 3 is an exploded view of a lens driving device;

FIG. 4 is a schematic structural diagram of an elastic component of the lens driving apparatus;

FIG. 5 is a schematic view of a first driving assembly of the lens driving apparatus and a lens barrel;

FIG. 6 is a schematic view of the structure of the lens barrel deflecting in one direction under the driving action of the first driving assembly;

FIG. 7 is a schematic view of the lens barrel being driven by the first driving assembly to deflect in another direction;

fig. 8 is a schematic view illustrating a first viewing angle structure of the lens driving apparatus in which a second driving assembly is engaged with a lens barrel;

fig. 9 is a schematic view of a second view structure of the lens driving apparatus with a second driving assembly engaged with the lens barrel;

FIG. 10 is a schematic view of the structure of the lens barrel rolling in one direction under the driving action of the second driving assembly;

FIG. 11 is a schematic view of the structure of the lens barrel rolling in the other direction under the driving action of the second driving assembly;

fig. 12 is an exploded schematic view of a lens driving device according to a second embodiment of the present invention;

fig. 13 is a schematic structural view illustrating a second driving assembly of the lens driving apparatus according to the second embodiment in cooperation with a lens barrel;

FIG. 14 is a schematic structural view showing the barrel rolling in one direction under the driving action of the second driving assembly;

fig. 15 is a schematic structural diagram of the lens barrel rolling in the other direction under the driving action of the second driving assembly.

[ detailed description ] embodiments

The present invention will be further described with reference to the accompanying drawings and embodiments.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

It will also be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Example one

Referring to fig. 1 to 11, a lens driving device 10 includes a housing 11 having an accommodating space 115, a lens barrel 12 accommodated in the accommodating space 115 and rotatably connected to the housing 11, and a first driving assembly 14 and a second driving assembly 15 disposed between the lens barrel 12 and the housing 11. The housing 11 includes a bottom plate 111, side plates 112 surrounding the bottom plate 111, and a cover plate 113 connected to the side plates 112 and spaced apart from the bottom plate 111. The bottom plate 111, the side plate 112 and the cover plate 113 enclose an accommodating space 115, an opening 1131 communicating with the accommodating space 115 is formed in the cover plate 113, so that the lens assembly installed in the lens barrel 12 can obtain image information of an object to be photographed through the opening 1131, and the lens barrel 12 is accommodated in the accommodating space 115 and is rotatably connected with the bottom plate 111.

The lens barrel 12 is used for accommodating lens components, and the lens barrel 12 includes an outer sidewall 121 spaced apart from the housing 11. The first drive assembly 14 and the second drive assembly 15 are spaced apart in a direction parallel to the optical axis of the lens assembly. The first driving assembly 14 is used for driving the lens barrel 12 to rotate around a direction perpendicular to the optical axis of the lens assembly, that is, the lens barrel 12 rotates in a plane where the optical axis of the lens assembly is located, so as to realize the shake correction in the yaw and pitch directions. The second driving assembly 15 is used for driving the lens barrel 12 to rotate around the optical axis of the lens assembly, that is, the lens barrel 12 rotates in a plane perpendicular to the plane of the optical axis of the lens assembly, so as to correct the shake in the rolling direction.

The side plate 112 of the housing 11 is provided with a through hole 17 communicating with the accommodating space 115 formed by the housing 11. The electrical connector 16 is disposed through the through hole 17 and connects the first driving assembly 14 and the second driving assembly 15 with an external control circuit, so that the external control circuit can drive and control the first driving assembly 14 and the second driving assembly 15, and the electrical connector 16 may be a wire or a flexible circuit board.

Specifically, the second driving assembly 15 includes a second driving coil 152 and a second magnetic member 151 that are oppositely disposed. As shown in fig. 2 to 3, when one of the second driving coil 152 and the second magnetic member 151 is connected to the housing 11, the other of the second driving coil 152 and the second magnetic member 151 is connected to the lens barrel 12, and the second driving assembly 15 is connected between the housing 11 and the lens barrel 12, one of the second driving coil 152 and the second magnetic member 151 may be connected to the side plate 112 of the housing 11, and the other may be connected to the outer side wall 121 of the lens barrel 12. The second magnetic member 151 is a magnet, magnetic steel, or permanent magnet.

The second magnetic elements 151 and the second driving coils 152 disposed opposite to the second magnetic elements 151 are not equal in number, that is, one second driving coil 152 is disposed corresponding to at least two second magnetic elements 151, or one second magnetic element 151 is disposed corresponding to at least two second driving coils 152.

The second driving coil 152 is energized and interacts with the second magnetic member 151 in the magnetic field of the second magnetic member 151 to drive the lens barrel 12 to rotate around the optical axis of the lens assembly relative to the housing 11, thereby preventing the lens assembly from shaking in the rolling direction.

In this embodiment, the second driving coils 152 include at least one, and each second driving coil 152 corresponds to at least two second magnetic members 151; among the at least two second magnetic members 151 corresponding to the same second driving coil 152, the magnetizing directions of the adjacent second magnetic members 151 are opposite. In this embodiment, the second magnetic member 151 is fixed to the lens barrel 12, the second driving coil 152 is fixed to the housing 11, the number of the second driving coils 152 is 1, and the number of the corresponding second magnetic members 151 is two, but the present invention is not limited to the case where the second magnetic member 151 can be fixed only to the lens barrel 12, and the number of the second driving coils 152 can be fixed only to the housing 11, and the number of the second driving coils 152 is limited to 1 and 2.

In some embodiments, the lens driving device 10 includes at least two second driving assemblies 15, and the at least two second driving assemblies 15 are disposed around the outer sidewall 121 and are spaced apart from each other adjacent to the second driving assemblies 15. Preferably, the lens barrel 12 is a prism-shaped structure, the number of the second driving assemblies 15 is four, the four second driving assemblies 15 are circumferentially arranged on four adjacent outer side walls 121 of the lens barrel 12, a plane on which the second driving coil 152 and the second magnetic member 151 of each second driving assembly 15 are located is parallel to the corresponding outer side wall 121, and the second driving coil 152 and the second magnetic member 151 of each second driving assembly 15 are oppositely arranged at intervals.

As shown in fig. 8-11, the second driving coil 152 is connected to the electrical connection member 16, when an external control circuit drives a signal to the second driving coil 152 through the electrical connection member 16, the second driving coil 151 generates a magnetic field and generates a magnetic force between the second driving coil 151 and the second magnetic member 151, so that the second driving coil 152 and the second magnetic member 151 interact with each other, the second magnetic member 151 is magnetized in a direction in which the second magnetic member 151 and the second driving coil 152 are opposite to each other, and the lens barrel 12 is driven to rotate around an optical axis of the lens assembly with respect to the housing 11 by taking a rotation connection position with the housing 11 as a fulcrum, thereby achieving anti-shake of the lens assembly in a rolling direction.

In this embodiment, the interaction between one second driving coil 152 of one set of second driving assemblies 15 and two corresponding second magnetic members 151 is taken as an example for explanation.

As shown in fig. 9-10, the magnetizing directions of the adjacent second magnetic members 151 are opposite, and two ends of the same second driving coil 152 correspond to the magnetizing directions of the second magnetic members 151 in different directions, and the magnetizing directions of the magnetic steels shown in fig. 9 are taken as an example to briefly explain the principle of the rolling direction anti-shake implementation of the present invention, and certainly the magnetizing directions of the adjacent magnetic steels are not limited to the magnetizing directions shown in fig. 9.

When the second driving coil 152 is powered on, the second driving coil 152 is subjected to a force F in the magnetic field, however, the second driving coil 152 is fixed on the housing 11, a foreign object is fixed through the housing 11 to provide a fixed support, the second magnetic member 151 is fixed on the lens barrel 12, and the lens barrel 12 is rotatably connected with the housing 11. The second magnetic member 151 will be subjected to an opposite force F1 opposite to the direction of the force F, so as to drive the lens barrel 12 to rotate clockwise around the optical axis, i.e. to drive the lens barrel 12 to rotate clockwise in a plane perpendicular to the plane of the optical axis of the lens assembly, so as to achieve the rolling direction shake correction. The external object providing the fixed support may be an electronic device such as a mobile phone, a notebook, a tablet, and the like, which is not limited herein.

As shown in fig. 11, it can be seen from the same principle that after the current in the second driving coil 152 is reversed, the second driving assembly 15 can drive the lens barrel 12 to rotate counterclockwise around the optical axis, that is, the lens barrel 12 is driven to rotate counterclockwise in a plane perpendicular to the plane of the optical axis of the lens assembly, so as to achieve the anti-shake of the lens assembly in the rolling direction.

Referring to fig. 2-3, in the present embodiment, the first driving assembly 14 includes a first driving coil 142 and a first magnetic element 141, which are oppositely disposed. One of the first driving coil 142 and the first magnetic member 141 is attached to the housing 11, and the other of the first driving coil 142 and the first magnetic member 141 is attached to the lens barrel 12. When the first driving assembly 14 is connected between the housing 11 and the lens barrel 12, one of the first driving coil 142 and the first magnetic member 141 may be connected to the side plate 112 of the housing 11, and the other may be connected to the outer side wall 121 of the lens barrel 12. The first magnetic member 141 is a magnet, magnetic steel or permanent magnet. In this embodiment, the first magnetic member 141 is fixed to the lens barrel 12, and the first driving coil 142 is fixed to the housing 11, but the first magnetic member 141 and the first driving coil 142 may be fixed to the lens barrel 12 and the housing 11, respectively.

The first driving coil 142 is connected to the electrical connector 16, and when an external control circuit drives a signal to the first driving coil 142 through the electrical connector 16, the first driving coil 142 generates a magnetic field, so that the first driving coil 142 and the first magnetic element 141 interact with each other, that is, the first magnetic element 141 and the first driving coil 142 attract or repel each other in the magnetic field generated by the first driving coil 142, so as to drive the lens barrel 12 to rotate around a direction perpendicular to the optical axis of the lens assembly, thereby achieving anti-shake of the lens assembly in the pitch direction and the yaw direction.

As shown in fig. 3, in some embodiments, the number of the first driving assemblies 14 includes at least two, and at least two first driving assemblies 14 are disposed around the outer sidewall 121 and are spaced apart from each other adjacent to the first driving assemblies 14.

Preferably, the lens barrel 12 is a prism-shaped structure, the number of the first driving assemblies 14 is four, the four first driving assemblies 14 are circumferentially arranged on four adjacent outer side walls 121 of the lens barrel 12, a plane on which the first driving coil 142 and the first magnetic member 141 of each first driving assembly 14 are located is parallel to the corresponding outer side wall 121, and the first driving coil 142 and the first magnetic member 141 of each first driving assembly 14 are opposite and spaced.

As shown in fig. 5-7, the optical axis of the lens assembly is L, when the first driving coil 142 is powered on, a magnetic field is generated, and a magnetic force is generated between the first driving coil 141, that is, the first driving coil 142 and the first driving coil 141 attract or repel each other in the magnetic field generated by the first driving coil 142, so that the lens barrel 12 rotates relative to the housing 11 around the rotational connection point with the housing 11 as a fulcrum in a direction perpendicular to the optical axis L of the lens assembly, thereby achieving anti-shake of the lens assembly in the pitch direction and the yaw direction.

In the present embodiment, as shown in fig. 2 to 3, the lens barrel 12 and the base plate 111 may be rotatably connected in such a manner that the base plate 111 is provided with a first fulcrum portion 1111, the side of the lens barrel 12 away from the opening 1131 is provided with a second fulcrum portion 122 rotatably connected to the first fulcrum portion 1111, the lens barrel 12 is supported in the optical axis direction by the first fulcrum portion 1111 and the second fulcrum portion 122, and the first fulcrum portion 1111 and the second fulcrum portion 122 are rotatably connected, so that the rotational force applied when the lens barrel 12 rotates with the rotational connection portion with the housing 11 as a fulcrum is more stable, and the accuracy of the rotation is more excellent.

Any one of the first fulcrum portion 1111 and the second fulcrum portion 122 is a spherical protrusion, and the other one is a groove matched with the spherical protrusion.

As shown in fig. 2, in the present embodiment, the second fulcrum portion 122 is a spherical protrusion, the first fulcrum portion 1111 is a groove 1112 matched with the spherical protrusion, specifically, the first fulcrum portion 1111 includes a protrusion 1113 protruding and extending from the bottom plate 111 toward the lens barrel 12, and a surface of the protrusion 1113 on a side close to the lens barrel 12 is recessed away from the lens barrel 12 to form the groove 1112.

Referring to fig. 2-3, in some embodiments, the lens driving apparatus 10 further includes an elastic component 13 elastically supporting the lens barrel 12. The elastic member 13 is disposed between the housing 11 and the lens barrel 12 and elastically connects the housing 11 and the lens barrel 12. The elastic member 13 simultaneously provides restoring forces for the movement of the lens barrel 12 in pitch, yaw and roll directions.

Specifically, the elastic assembly 13 includes a first connection portion 131 connected to the lens barrel 12, a second connection portion 132 connected to the housing 11, and an elastic member 133 disposed between the first connection portion 131 and the second connection portion 132 and elastically connecting the first connection portion 131 and the second connection portion 132.

Preferably, the first connecting portion 131 is connected to the outer sidewall 121 of the lens barrel 12, and the second connecting portion 132 is connected to the side plate 112 of the housing 11.

Referring to fig. 4, the first connecting portion 131 includes a plurality of first connecting members 1311, each of the first connecting members 1311 includes a first end 1312 and a second end 1313 opposite to each other, the first end 1312 of each of the first connecting members 1311 is connected to the second end 1313 of the adjacent first connecting member 1311, and the first connecting members 1311 are connected to form the first connecting portion 131.

The second connecting portion 132 includes a plurality of second connecting members 1321, the second connecting member 1321 includes a third end 1322 and a fourth end 1323, which are oppositely disposed, the third end 1322 of the second connecting member 1321 is disposed corresponding to the first end 1312 of the first connecting member 1311, and the fourth end 1323 of the second connecting member 1321 is disposed corresponding to the second end 1313 of the first connecting member 1311.

The third end 1322 of each second connecting element 1321 is connected to the fourth end 1323 of the adjacent second connecting element 1321, and a plurality of second connecting elements 1321 are connected to form the second connecting portion 132.

The elastic members 133 are plural, and each elastic member 133 elastically connects the second end 1313 of one first connector 1311 and the third end 1322 of one second connector 1321, thereby forming the elastic assembly 13.

Example two

Referring to fig. 12 to 15, a difference between the lens driving device 20 disclosed in the present embodiment and the lens driving device 10 disclosed in the first embodiment is that one second magnetic member 251 of the second magnetic assembly 25 of the lens driving device 20 of the present embodiment is disposed corresponding to at least two second driving coils 252.

Specifically, the second magnetic members 251 include at least one, each second magnetic member 251 corresponds to at least two second driving coils 252, and in at least two second driving coils 252 corresponding to the same second magnetic member 251, the current directions of the adjacent second driving coils 252 are opposite.

In this embodiment, the interaction between one second magnetic member 251 of one set of second driving assemblies 25 and two corresponding second driving coils 252 is taken as an example for explanation.

As shown in fig. 14, when the adjacent two second driving coils 252 are energized with currents in opposite directions, for example, a clockwise current is energized to one of the second driving coils 252, and a counterclockwise current is energized to the other adjacent second driving coil 152, both ends of the two second driving coils 252 close to the second magnetic member 251 are subjected to a force F in a magnetic field, because the second driving coils 252 are fixed on the housing 21 and fixed on a foreign object through the housing 21 to provide a fixed support, the second magnetic member 251 is fixed on the lens barrel 22, and the lens barrel 22 is rotationally connected to the housing 21, the second magnetic member 251 is subjected to a reverse force F1 in a direction opposite to the force F, so as to drive the lens barrel 22 to rotate clockwise around the optical axis, that is, the lens barrel 22 is driven to rotate clockwise in a plane perpendicular to the plane of the optical axis of the lens assembly to achieve shake correction in a rolling direction. The external object providing the fixed support may be an electronic device such as a mobile phone, a notebook, a tablet, and the like, which is not limited herein.

As shown in fig. 15, it can be known from the same principle that when the currents applied to the adjacent second driving coils 252 are reversed simultaneously, the second driving assembly 25 can drive the lens barrel 22 to rotate counterclockwise around the optical axis, that is, the lens barrel 22 is driven to rotate counterclockwise in a plane perpendicular to the plane of the optical axis of the lens assembly, so as to achieve the anti-shake of the lens assembly in the rolling direction. In the lens driving device 20 disclosed in this embodiment, specific structures of the housing 21, the lens barrel 22, the elastic component 23, the first magnetic component 24, the second magnetic component 25, the electrical connector 26, and other components and connection relationships among the components may refer to the lens driving device 10 disclosed in the first embodiment, which are not described herein again.

through arranging the first driving assembly and the second driving assembly and arranging the first driving assembly and the second driving assembly between the shell and the lens barrel, the lens barrel can be driven to rotate around the direction perpendicular to the optical axis of the lens assembly by the first driving assembly, and the shake correction in the pitching direction and the yawing direction of the lens barrel is realized. And the second driving component is utilized to drive the lens barrel to rotate around the optical axis of the lens component, so that the shake correction in the rolling direction of the lens barrel is realized, the anti-shake of the lens component in multiple directions such as the pitching direction, the deflection direction and the rolling direction is realized, and the anti-shake effect is better.

The above embodiments of the present invention are only described, and it should be noted that, for those skilled in the art, modifications can be made without departing from the inventive concept, but these all fall into the protection scope of the present invention.

Claims

1. A lens driving device, wherein the lens driving device comprises:

a housing with an accommodating space;

a lens barrel, the lens barrel is arranged in the accommodating space and is rotatably connected with the housing, and the lens barrel accommodates a lens assembly;

a first drive assembly that drives the lens barrel to rotate in a direction perpendicular to the optical axis of the lens assembly, the first drive assembly is disposed between the housing and the lens barrel; and

a second drive assembly that drives the lens barrel to rotate around the optical axis of the lens assembly, the second drive assembly is disposed between the housing and the lens barrel, and the second drive assembly includes a pair of oppositely disposed a second driving coil and a second magnetic member, one of the second driving coil and the second magnetic member is connected to the housing, and the other is connected to the lens barrel;

Wherein, the number of the second magnetic member and the second driving coils disposed opposite to the second magnetic member is not equal.

2 . The lens driving device according to claim 1 , wherein the second driving coil comprises at least one, and each of the second driving coils corresponds to at least two of the second magnetic elements, and is associated with the second magnetic element. 3 . In at least two of the second magnetic elements corresponding to the same second driving coil, the magnetization directions of the adjacent second magnetic elements are opposite.

3 . The lens driving device according to claim 1 , wherein the second magnetic element comprises at least one, and each of the second magnetic elements corresponds to at least two of the second driving coils and is associated with the second driving coil. 4 . In at least two of the second driving coils corresponding to the same second magnetic member, the currents of the adjacent second driving coils are energized in opposite directions.

4. The lens driving device according to claim 2 or 3, wherein the lens barrel comprises an outer sidewall spaced apart from the housing, and the lens driving device comprises at least two second driving assemblies , at least two of the second driving components are arranged around the outer side wall and are arranged adjacent to the second driving components at intervals; adjacent to the second magnetic components are arranged at intervals.

5 . The lens driving device according to claim 4 , wherein the plane on which the second driving coil and the second magnetic member of each of the second driving components are located is parallel to the outer side wall. 6 . , the second driving coil and the second magnetic member of each of the second driving components are arranged opposite and spaced apart.

6 . The lens driving device according to claim 5 , wherein the housing comprises a bottom plate, a side plate surrounding the bottom plate, and a cover connected to the side plate and spaced from the bottom plate. 7 . plate;

The accommodating space is surrounded by the bottom plate, the side plate and the cover plate, the cover plate is provided with an opening communicating with the accommodating space, and the lens barrel is accommodated in the accommodating space. It is placed in the space and is rotatably connected with the bottom plate.

7 . The lens driving device according to claim 6 , wherein the bottom plate is provided with a first fulcrum portion, and a side of the lens barrel away from the opening is provided with a first fulcrum portion rotatably connected to the first fulcrum portion. 8 . Two fulcrum department.

8 . The lens driving device according to claim 7 , wherein any one of the first fulcrum portion and the second fulcrum portion is a spherical protrusion, and the other one is matched with the spherical protrusion. 9 . groove.

9 . The lens driving device according to claim 4 , wherein the first driving assembly comprises a first driving coil and a first magnetic member disposed opposite to each other, the first driving coil and the first magnetic member One of them is connected to the housing, and the other is connected to the lens barrel, and the first drive assembly and the second drive assembly are spaced apart along the optical axis direction of the lens assembly.

10 . The lens driving device according to claim 9 , wherein the first driving component comprises at least two, and at least two of the first driving components are wound around the outer side wall and are adjacent to the first driving component. 11 . A drive assembly is spaced apart.

11 . The lens driving device according to claim 10 , wherein the plane on which the first driving coil and the first magnetic member of each of the first driving components are located is parallel to the outer side wall. 12 . , the first driving coil of each of the first driving components and the first magnetic member are arranged opposite and spaced apart.

12 . The lens driving device according to claim 1 , wherein the lens driving device further comprises an elastic component for elastically supporting the lens barrel, and the elastic component includes a first connecting portion connected with the lens barrel. 13 . , a second connecting part connected with the casing, and an elastic piece arranged between the first connecting part and the second connecting part and elastically connecting the first connecting part and the second connecting part.