CN112596193B

CN112596193B - Driver and camera module

Info

Publication number: CN112596193B
Application number: CN202010769333.6A
Authority: CN
Inventors: 董怿
Original assignee: Beijing Kelifor Technology Co ltd
Current assignee: Beijing Kelifor Technology Co ltd
Priority date: 2020-08-03
Filing date: 2020-08-03
Publication date: 2022-03-25
Anticipated expiration: 2040-08-03
Also published as: CN112596193A

Abstract

The present disclosure relates to a driver and a camera module, wherein the driver includes: the lens driving device comprises a base, a first carrier movably arranged on the base and used for mounting a first lens, a first driving mechanism used for driving the first carrier to reciprocate along the direction of an optical axis, a second carrier movably arranged on the first carrier and used for mounting a second lens, and a second driving mechanism used for driving the second carrier to reciprocate on the first carrier along the direction of the optical axis. Through the technical scheme, the coarse adjustment and the fine adjustment are combined, the automatic focusing and zooming processes can be rapidly completed, and meanwhile, the imaging quality is improved. Moreover, the technical scheme enables the second driving mechanism to be integrated on the first carrier, and compared with the second driving mechanism which is independent of the first carrier in the related art, the whole occupied volume of the driver can be reduced, so that the miniaturization of the camera module is realized.

Description

Driver and camera module

Technical Field

The present disclosure relates to the field of optical element technology, and more particularly, to an actuator and an image pickup module having the actuator.

Background

An optical system is a system for imaging or optical information processing, and can be applied to various fields, for example, a camera of a mobile phone, a camera or a projection device. In an optical system, a driver is usually used to drive a lens to realize the functions of auto-focusing and zooming. In the related art, in the automatic focusing and zooming process, a plurality of lenses can only be driven by respective independent driving devices, however, in this way, the focusing and zooming processes are not easily synchronized, and the definition and speed of the focusing and zooming processes are affected. In addition, a driving device is provided for each lens, which tends to make the camera module have a larger volume.

Disclosure of Invention

A first object of the present disclosure is to provide a driver capable of achieving miniaturization of a camera module while improving autofocus and zoom efficiency and improving imaging quality.

To achieve the above object, the present disclosure provides a driver including:

a base;

the first carrier is movably arranged on the base and used for mounting a first lens;

the first driving mechanism is used for driving the first carrier to reciprocate along the direction of the optical axis;

the second carrier is movably arranged on the first carrier and used for mounting a second lens; and

and the second driving mechanism is used for driving the second carrier to reciprocate on the first carrier along the direction of the optical axis so as to adjust the distance between the first lens and the second lens.

Optionally, the driver further includes two first guide rods extending along the optical axis direction and penetrating through the first carrier, and a first slide and a second slide through which the two first guide rods respectively penetrate are provided on the first carrier, so that the first carrier can slide along the first guide rods;

the first runner is configured to: the cross section of the first guide rod is provided with a V-shaped part tangent to two positions of the first guide rod; the second chute is configured to: the cross section of the first slide way is provided with a straight part tangent to one position of the first guide rod, and the first slide way and the second slide way are abutted against the corresponding first guide rod from the same side.

Optionally, the first slideway is a first through hole or a first slot arranged along the extending direction of the first guide rod; the second slide is a second through hole or a second groove arranged along the extending direction of the first guide rod.

Optionally, the first guide rod is made of a magnetic conductive material, and the first carrier is provided with at least one first magnet for attracting the first guide rod to the first slideway and the second slideway.

Optionally, the first driving mechanism includes a first motor disposed on one of the base and the first carrier, a screw driven to rotate by the first motor, and a U-shaped clamping structure disposed on the other of the base and the first carrier and configured to cooperate with the screw to generate a relative movement, and the U-shaped clamping structure is configured to have an elastic force capable of abutting against the screw.

Optionally, the U-shaped clamping structure comprises two first clamping pieces extending from the base or the first carrier to two sides of the screw, and the first clamping pieces are formed as side walls of the U-shaped clamping structure.

Optionally, the U-shaped clamping structure comprises a straight piece extending from the base or the first carrier, and two second clamping pieces extending from the straight piece to both sides of the screw, the second clamping pieces forming side walls of the U-shaped clamping structure.

Optionally, the U-shaped clamping structure includes a bent piece extending from the base or the first carrier, and two third clamping pieces extending from an end of the bent piece to two sides of the screw, and the third clamping pieces are formed as side walls of the U-shaped clamping structure.

Optionally, the first driving mechanism includes a magnetic yoke disposed on one of the base and the first carrier, a second magnet disposed on the magnetic yoke, and a first coil disposed on the other of the base and the first carrier, the magnetic yoke includes a circumferential closed space, the second magnet is disposed on an inner wall of a first side of the circumferential closed space, and the first coil is configured to be wound around the first side or a second side opposite to the first side and capable of moving relative to the magnetic yoke.

Alternatively, the yoke is configured as a zigzag structure formed by an outer peripheral portion and a connecting portion to form two of the circumferentially closed regions, the first coil is wound around the connecting portion, and the second magnet is provided in each of the circumferentially closed regions.

Optionally, the two second magnets are respectively disposed at two sides of the connecting portion, and the first coil is wound around the peripheries of the two second magnets.

Optionally, the two second magnets are respectively disposed on a side of each of the circumferential sealing areas opposite to the connecting portion.

Optionally, the yoke is configured as a rectangle to form the circumferentially closed space, the second magnet is disposed at a side of the rectangle, and the first coil is wound around an outer periphery of the second magnet.

Alternatively, the yoke is configured in a rectangular shape to form the circumferentially closed space, the second magnet is disposed on one side of the rectangular shape, and the first coil is wound around one side of the rectangular shape opposite to the second magnet.

Optionally, the first driving mechanism comprises a second motor arranged on one of the base and the first carrier and a gear driven by the second motor to rotate, and a rack arranged on the other of the base and the first carrier and matched with the gear to generate relative movement.

Optionally, the second drive mechanism comprises a second coil mounted on one of the first and second carriers, and a third magnet mounted on the other of the first and second carriers cooperating with the second coil to produce relative movement.

Optionally, the actuator further comprises a plurality of balls disposed between the first and second carriers, and a guide groove extending in the optical axis direction for accommodating the balls is provided on one of the first and second carriers.

Optionally, the driver further includes two second guide rods extending along the optical axis direction and penetrating through the second carrier, and a third slideway and a fourth slideway through which the two second guide rods respectively penetrate are provided on the second carrier, so that the second carrier can slide along the second guide rods;

the third slide configured to: the cross section of the second slide rail has a V-shaped part tangent to the second guide rod, and the fourth slide rail is configured to: the cross section of the first slide way and the cross section of the second slide way are provided with straight parts tangent to the first position of the second guide rod, and the third slide way and the fourth slide way are abutted against the corresponding second guide rod from the same side.

Optionally, a reed is disposed between the first carrier and the second carrier.

Optionally, the first carrier and the second carrier are disposed on the same side of the first lens and the second lens along the optical axis direction; or the first carrier and the second carrier are respectively arranged on two sides of the first lens and the second lens along the optical axis direction.

Optionally, the driver further comprises:

the third carrier is arranged on the second carrier and used for mounting a third lens; and

and the third driving mechanism is used for driving the third carrier to move on the second carrier along the direction of the optical axis.

Optionally, a plurality of the second carriers and a plurality of second driving mechanisms corresponding to the second carriers are disposed on the first carrier.

Alternatively, the second drive mechanism may be assembled or integrally provided on the first carrier.

Optionally, the driver includes two fixing portions disposed oppositely, and a signal transmission member disposed between the two fixing portions in a bending manner, wherein two ends of the signal transmission member are respectively connected to the corresponding fixing portions, and the first carrier is connected to a middle portion of the signal transmission member and configured to be capable of dragging the middle portion of the signal transmission member so that the signal transmission member abuts against or separates from the fixing portions in a vertical direction.

Optionally, the signal transmission member is configured as an M-shaped structure formed by a first signal transmission section and a second signal transmission section, the first signal transmission section and the second signal transmission section are respectively U-shaped, and the first carrier is connected at a junction of the first signal transmission section and the second signal transmission section.

Optionally, the signal transmission member is of a U-shaped structure, a first end of the signal transmission member is connected to the second fixing portion, and the first carrier is connected to a second end of the signal transmission member; the driver also comprises a stopper arranged between the signal transmission piece and the first fixing part and used for separating the signal transmission piece from the first fixing part, and the stopper is connected to the second end of the signal transmission piece so that the first carrier can drive the signal transmission piece and the stopper to move simultaneously.

A second objective of the present disclosure is to provide a camera module including the above driver.

Through the technical scheme, because the second carrier is arranged on the first carrier, when the first carrier is driven by the first driving mechanism to move, the first lens and the second lens can be driven to move along the direction of the optical axis simultaneously, the rough adjustment of the automatic focusing and zooming process is realized, the second carrier arranged on the first carrier can also move independently under the driving of the second driving mechanism, so that the second lens is driven to continue to move along the direction of the optical axis, the distance between the first lens and the second lens is changed, and the fine adjustment of the automatic focusing and zooming process is realized on the basis of the rough adjustment. Through the combination of the coarse adjustment and the fine adjustment, the driver disclosed by the invention can quickly complete the automatic focusing and zooming processes, and the imaging quality is improved. Moreover, the technical scheme enables the second driving mechanism to be integrated on the first carrier, and compared with the second driving mechanism which is independent of the first carrier in the related art, the whole occupied volume of the driver can be reduced, so that the miniaturization of the camera module is realized.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

fig. 1 is a schematic view of a camera module according to an exemplary embodiment of the present disclosure;

fig. 2 is a schematic view of a camera module according to another exemplary embodiment of the present disclosure;

fig. 3 is a schematic view of a camera module according to another exemplary embodiment of the present disclosure;

FIG. 4 is a schematic view of a first guide assembly provided in an exemplary embodiment of the present disclosure;

FIG. 5 is an elevation view of the first guide assembly of FIG. 4;

FIG. 6 is a schematic view of a first guide assembly provided in another exemplary embodiment of the present disclosure;

FIG. 7 is an elevation view of the first guide assembly of FIG. 6;

FIG. 8 is a bottom view of a first guide assembly provided in an exemplary embodiment of the present disclosure;

FIG. 9 is a schematic illustration of a first drive mechanism provided in an exemplary embodiment of the present disclosure;

FIG. 10 is a schematic illustration of a first drive mechanism provided in another exemplary embodiment of the present disclosure;

FIG. 11 is a schematic view of a first drive mechanism provided in another exemplary embodiment of the present disclosure;

FIG. 12 is a schematic view of a first drive mechanism provided in another exemplary embodiment of the present disclosure;

FIG. 13 is a schematic view of a first drive mechanism provided in another exemplary embodiment of the present disclosure;

fig. 14 is a magnetic flux distribution diagram of the first drive mechanism shown in fig. 13;

FIG. 15 is a schematic view of a first drive mechanism provided in another exemplary embodiment of the present disclosure;

fig. 16 is a magnetic flux distribution diagram of the first drive mechanism shown in fig. 15;

FIG. 17 is a schematic illustration of a first drive mechanism provided in another exemplary embodiment of the present disclosure;

fig. 18 is a magnetic flux distribution diagram of the first drive mechanism shown in fig. 17;

FIG. 19 is a schematic illustration of a first drive mechanism provided in another exemplary embodiment of the present disclosure;

fig. 20 is a magnetic flux distribution diagram of the first drive mechanism shown in fig. 19;

FIG. 21 is a schematic view of a first drive mechanism provided in another exemplary embodiment of the present disclosure;

fig. 22 is a magnetic flux distribution diagram of the first drive mechanism shown in fig. 21;

FIG. 23 is a schematic illustration of a first drive mechanism provided in another exemplary embodiment of the present disclosure;

fig. 24 is a magnetic flux distribution diagram of the first drive mechanism shown in fig. 23;

FIG. 25 is a schematic illustration of a first drive mechanism provided in another exemplary embodiment of the present disclosure;

fig. 26 is a magnetic flux distribution diagram of the first drive mechanism shown in fig. 25;

FIG. 27 is a schematic illustration of a first drive mechanism provided in another exemplary embodiment of the present disclosure;

fig. 28 is a magnetic flux distribution diagram of the first drive mechanism shown in fig. 27;

FIG. 29 is a schematic view of a first drive mechanism provided in another exemplary embodiment of the present disclosure;

FIG. 30 is a schematic illustration of a second drive mechanism provided in an exemplary embodiment of the present disclosure;

FIG. 31 is a schematic illustration of a second drive mechanism provided in another exemplary embodiment of the present disclosure;

FIG. 32 is a schematic illustration of a second drive mechanism provided in another exemplary embodiment of the present disclosure;

FIG. 33 is a schematic illustration of a second drive mechanism provided in another exemplary embodiment of the present disclosure;

FIG. 34 is a schematic view of a second guide assembly provided in an exemplary embodiment of the present disclosure;

FIG. 35 is a top view of a drive provided by an exemplary embodiment of the present disclosure;

FIG. 36 is a front view of the actuator shown in FIG. 35;

FIG. 37 is a top view of a drive provided by another exemplary embodiment of the present disclosure;

FIG. 38 is a front view of the actuator shown in FIG. 37;

FIG. 39 is a schematic view of an electrical signal transmission assembly provided by an exemplary embodiment of the present disclosure in a first state;

FIG. 40 is a schematic view of the electrical signal transmission assembly of FIG. 39 in a second state;

FIG. 41 is a schematic view of an electrical signal transmission assembly provided in another exemplary embodiment of the present disclosure in a first state;

fig. 42 is a schematic view of the electrical signal transmission assembly of fig. 41 in a second state.

Description of the reference numerals

1-a first carrier; 11-a first slideway; 12-a second slide; 13-a first magnet; 14-a sensor; 15-a first support; 16-a second support; 2-a second carrier; 21-a third slide; 22-a fourth slide; 3-a base; 31-guide rod fixing seat; 41-a first motor; 42-screw rod; a 43-U shaped clamping structure; 431-a first clamp; 432-a straight piece; 433-a second clamp; 434-bending piece; 435-a third clamp; 44-a magnetic yoke; 441-a first side edge; 442-a second side edge; 45-a second magnet; 46-a first coil; 47-a second motor; 48-gear; 49-rack; 51-a second coil; 52-third Magnetitum; 53-a ball bearing; 54-a guide groove; 6-a first guide bar; 7-a second guide bar; 81-a stationary portion; 811-a first fixed part; 812-a second stationary portion; 82-a signal transmission member; 821-a first signal transmission segment; 822-a second signal transmission segment; 9-a housing; 100-a first lens; 200 second lens.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, the use of directional terms such as "inner and outer" is intended with respect to the proper contours of the respective parts, unless otherwise specified. In addition, the terms "first, second, and the like" used in the embodiments of the present disclosure are for distinguishing one element from another, and have no order or importance. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated.

As shown in fig. 1 to 3, the present disclosure provides a camera module including a lens group and a driver for driving the lens group to move in an optical axis direction. The automatic focusing and zooming are realized by adjusting the relative distance among a plurality of lenses in the lens group. The upper part of the camera module is covered with a shell 8 for protecting the driver. The driver comprises: the optical lens driving device comprises a base 3, a first carrier 1 movably arranged on the base 3 and used for mounting a first lens 100, a first driving mechanism used for driving the first carrier 1 to reciprocate along the optical axis direction, a second carrier 2 movably arranged on the first carrier 1 and used for mounting a second lens 200, and a second driving mechanism used for driving the second carrier 2 to reciprocate along the optical axis direction on the first carrier 1. That is, compared to the related art actuator having no connection relationship between carriers, the present disclosure enables the second carrier 2 disposed on the first carrier 1 to move simultaneously during the first carrier 1 is driven by the first driving mechanism to move, and enables the second carrier 2 to move independently on the first carrier 1 under the drive of the second driving mechanism, so as to further adjust the distance between the first lens 100 and the second lens 200.

Through the technical scheme, the second carrier 2 is arranged on the first carrier 1, so that when the first carrier 1 is driven by the first driving mechanism to move, the first lens 100 and the second lens 200 can be driven to move along the optical axis direction simultaneously, the rough adjustment of the automatic focusing and zooming processes is realized, the second carrier 2 arranged on the first carrier 1 can also move independently under the driving of the second driving mechanism, so that the second lens 200 is driven to continue to move along the optical axis direction, the relative distance between the first lens 100 and the second lens 200 is changed, and the fine adjustment of the focusing and zooming processes is realized on the basis of the rough adjustment. This combination of coarse and fine adjustments allows the actuator of the present disclosure to quickly complete the auto-focus and zoom process. In addition, the first carrier 1 and the second carrier 2 are integrally moved firstly, and then the second carrier 2 is driven to move independently, so that the control strategy is simpler. In addition, the technical scheme enables the second driving mechanism to be integrated on the first carrier 1, and compared with the prior art that the second driving mechanism independent of the first carrier 1 only occupies the space of the camera module, the camera module is miniaturized.

In order to improve the stability of the movement of the lens during the auto-focusing process and improve the imaging quality thereof, further referring to fig. 4 to 8, the actuator may further include a first guide assembly including two first guide rods 6 extending in the optical axis direction and penetrating through the first carrier 1, so that the first carrier 1 can be supported by the first guide rods 6 and slide along the extending direction of the first guide rods 6. The base 3 is provided with a guide bar fixing seat 31 for fixing both ends of the first guide bar 6. The first carrier 1 is provided with a first slideway 11 and a second slideway 12 for the two guide rods 6 to pass through respectively. Wherein the first slideway 11 is configured such that its cross section has a V-shaped portion tangent to the first guide bar 6 at two points, the second slideway 12 is configured such that it has a straight portion tangent to the first guide bar 6 at one point, and the first slideway 11 and the second slideway 12 abut against the respective guide bar 1 from the same side.

During the auto-focusing and zooming processes, the first carrier 1 can drive the first lens 100 and the second lens 200 to slide together along the extending direction (i.e. the optical axis direction) of the first guide bar 6 all the time. The cross section of the first slideway 11 for the first guide rod 6 to pass through on the first carrier 1 has a V-shaped portion tangent to the first guide rod 6 at two positions, so as to radially limit the first carrier 1 and avoid shaking in the sliding process. The second slideway 12 has a straight portion tangent to the first guide bar 6, so that the two first guide bars 6 can jointly support the first carrier 1, and the stability of the first guide bar 6 to support the first carrier 1 is improved. The situation that the optical axes of the first lens 100 and the second lens 200 deflect in the process of moving along with the first carrier 1 is avoided by arranging the first guide assembly, and the imaging quality is further improved.

The first slideway 11 may be a first through hole or a first slot provided along the extending direction of the first guide bar 6. For example, in fig. 4 and 5, the first runner 11 is shown as a first through hole, and in fig. 6 and 7, the first runner 11 is shown as a first slot. Likewise, the second slideway 12 may be a second through hole or a second slot provided along the extension direction of the first guide bar 6. For example, in fig. 4 and 5, the second runner 12 is shown as a second through hole. In fig. 6 and 7, the second runner 12 is shown as a second slot. The first slide 11 and the second slide 12 may also adopt a mixed arrangement of through holes and slots, for example, the first slide 11 is a first through hole, and the second slide 12 is a second slot, or the first slide 11 is a first slot, and the second slide 12 is a second through hole.

The first guide bar 6 is made of a magnetically conductive material, and the first carrier 1 is provided with at least one first magnet 13 for attracting the first guide bar 6 to the first slide 11 and the second slide 12. Referring to fig. 8 in particular, the first magnet 13 can make the first guide bar 6 tightly attached to the first carrier 1, so as to further improve the stability of the lens moving along with the first carrier 1 and improve the imaging quality. In the embodiment of the present disclosure, the first magnet 13 may be disposed only at one end of the first carrier 1, and the first magnet 13 may span across two first guide bars 6 to provide magnetic attraction to the two first guide bars 6 at the same time, and in other embodiments, the first magnet 13 may be disposed at both ends of the first carrier 1 and may span across two first guide bars 6, respectively, so as to provide stronger magnetic attraction. Or, be provided with first magnetite 13 respectively in the four corners of first carrier 1, the position of each first magnetite 13 only corresponds a first guide bar 6, can provide enough magnetic attraction like this, reduces the volume of monolithic first magnetite 13, alleviates the holistic weight of the module of making a video recording.

As an embodiment for realizing the first driving mechanism, as shown in fig. 1, the first driving mechanism may include a first motor 41 disposed on one of the base 3 and the first carrier 1, a screw rod 42 driven to rotate by the first motor 41, and a U-shaped clamping structure 43 disposed on the other of the base 3 and the first carrier 1 for cooperating with the screw rod 42 to generate relative movement, wherein the U-shaped clamping structure 43 is configured to have an elastic force capable of abutting against the screw rod 42. It should be noted that the U-shaped holding structure 43 has a thread matching with the screw rod 3, and the size of the U-shaped holding structure 5 may be slightly smaller than the outer diameter of the screw rod 3 to clamp the screw rod 42 and can expand under the elastic action to cooperate with the screw rod 42 to generate relative movement. For convenience of description, the screw 42 and the first motor 41 are installed on the base 3, and the U-shaped clamping structure 43 is disposed on the first carrier 1, which is only for illustration and not for limiting the disclosure.

When the screw 42 rotates, the U-shaped clamping structure 43 engaged with the screw 42 converts the rotation of the screw 42 into a linear motion, so as to generate a relative displacement with the screw 42, so that the first carrier 1 drives the lens to move relative to the base 3. Here, the U-shaped clamping structure 43 is configured to have the elastic force of the clamping screw 42, so that the U-shaped clamping structure 43 can always stabilize the clamping screw 42, thereby ensuring the moving stability of the first carrier 1 and improving the imaging quality of the camera module. In addition, when the lens is impacted by the outside to generate a larger acceleration, the U-shaped clamping structure 43 can slide with the screw rod 42 due to the elasticity, so that the threads of the U-shaped clamping structure 43 and the threads of the screw rod 42 are staggered, the irreversible damage to the driver caused by overlarge impact force can be avoided, and the reliability of the camera module is improved.

In one embodiment, as shown in fig. 9 and 10, the U-shaped clamping structure 43 includes two first clamping members 431 extending from the base 3 or the first carrier 1 to both sides of the screw 42, and the first clamping members 431 are formed as sidewalls of the U-shaped clamping structure 43. The first clamping member 431 has elasticity, and when the first carrier 1 is moved or the screw 42 is rotated and shaken, the first clamping member 431 is elastically deformed, so that the first carrier 1 can be smoothly moved.

Referring to fig. 10, the first guide bar 6 may be attached to the upper walls of the first and

second chutes

11 and 12 in an initial state, and the first carrier 1 may be kept attached to the position by the elastic action of the first clamping member 431, so as to stabilize the first carrier 1 and improve the image quality. When the first guide bar 6 is magnetically attached to the left side wall of the first carrier 1 in the drawing direction of fig. 9 by the first magnet 13, the first clamping member 431 is clamped at the upper and lower sides (referring to the upper and lower sides in the drawing direction of fig. 9 and 10) of the screw rod 42, so that the first carrier 1 can be kept attached to the left side of the first guide bar 6 by the elastic action of the first clamping member 431, and the first carrier 1 can be ensured to move smoothly along the first guide bar 6.

In a second embodiment, referring to fig. 11, the U-shaped clamping structure 43 comprises a straight member 432 extending from the base 3 or the first carrier 1, and two second clamping members 433 extending from the straight member 432 to both sides of the screw 42, the second clamping members 433 being formed as side walls of the U-shaped clamping structure 43. Here, the second clamping member 433 clamps both left and right sides (i.e., left and right sides in the drawing direction of fig. 11) of the screw rod 42, so that the first carrier 1 can be smoothly moved, and referring to fig. 11, the second clamping member 433 can hold the first carrier 1 at the position, for example, by magnetically attracting the first guide bar 6 to the left sides of the first and

second slides

11 and 12 by the first magnet 13. The straight member 432 may also have elasticity, so that the straight member 432 and the second clamping member 433 can stabilize the shaking from different directions.

In a third embodiment, referring to fig. 12, the U-shaped clamping structure 43 comprises a bending piece 434 extending from the base 3 or the first carrier 1, and two third clamping pieces 435 extending from the end of the bending piece 434 to both sides of the screw 42, and the third clamping pieces 435 are formed as side walls of the U-shaped clamping structure 43. This embodiment is the same as the second embodiment described above in that the third clamping members 435 clamp both right and left sides of the screw 42, making it possible to smoothly move the first carrier 1. Different from the above embodiment, there is designed the bending piece 434, two elastic deformation regions except the clamping piece can be added through the bending piece 434, that is, the horizontal arm and the vertical arm of the bending piece 434 can also generate elastic deformation, so as to adapt to the shaking from the screw 42 in different directions, avoid the first carrier 1 from shaking in all directions, and enhance the stabilizing effect on the first carrier 1, where the horizontal arm and the vertical arm are relative to the drawing direction of fig. 12, and the left-right direction and the up-down direction of the drawing are horizontal and vertical. In a similar way, when setting up first magnetite 13, first magnetite 13 and U type clamping structure 43 combined action make first carrier 1 more stable with the laminating of first guide bar 6.

As shown in fig. 1, in the embodiment of the present disclosure, a sensor 14 for detecting the position of the first carrier 1 may be further disposed on the base 3 or the first carrier 1. The initial position of the screw 42 is recorded according to the initial position information of the first carrier 1 detected by the sensor 14, and then the first motor 41 is controlled to drive the screw 42 to rotate by an appropriate number of turns or angle according to the distance that the first lens 100 needs to move, so as to drive the first carrier 1 to move by a corresponding distance, and when the first carrier 1 moves to the required distance, the first motor 41 stops driving the screw 42. The sensor 14 may be a hall sensor or a photoelectric sensor, or may be another type of position sensor.

As another embodiment for realizing the first drive mechanism, as shown in fig. 2, the first drive mechanism may include a yoke 44 provided on one of the base 3 and the first carrier 1, a second magnet 45 provided on the yoke 44, and a first coil 46 provided on the other of the base 3 and the first carrier 1, the yoke 44 including a circumferentially closed space, the second magnet 45 being provided on an inner wall of a first side 441 of the circumferentially closed space, the first coil 46 being configured to be wound around the first side 441 or a second side 442 opposite to the first side 441 and to be capable of relative movement with the yoke 44.

The yoke 44 having the circumferentially closed region may restrain the distribution of the magnetic lines of force of the second magnet 45, concentrating the magnetic flux so that the magnetic line path of the second magnet 45 forms a closed loop. During the movement of the first coil 46 relative to the yoke 44, the first coil 46 is wound around the yoke 44 at all times, so that the magnetic lines of force of the second magnet 45 are distributed uniformly at various positions within the stroke of the first carrier 1, whereby the lens movement in the camera module having a large stroke can be facilitated.

In the disclosed embodiment, as shown in fig. 13 and 15, the magnetic yoke 44 may be configured in a rectangular shape to form a circumferentially closed space, and the magnetic flux path of the second magnet 45 passes through the rectangular magnetic yoke 44 to form a closed magnetic path, so that the magnetic flux of the second magnet 45 is uniformly distributed. In one embodiment, the second magnet 45 is disposed on the side of the rectangle, the first coil 46 is wound around the outer circumference of the second magnet 45, that is, as shown in fig. 13, the second magnet 45 and the first coil 46 are both disposed on the first side 441, and fig. 14 is a magnetic line distribution diagram of the second magnet 45 in the first drive mechanism shown in fig. 13. In another embodiment, the second magnet 45 may be disposed on one side of a rectangle, the first coil 46 may be wound around the side of the rectangle opposite to the second magnet 45, that is, as shown in fig. 15, the second magnet 45 may be disposed on the first side 441, the first coil 46 may be wound around the second side 442, and the magnetic force line distribution diagram of the second magnet 45 in the first driving mechanism shown in fig. 15 may be as shown in fig. 16.

In the embodiment of the present disclosure, as shown in fig. 17 and 19, the yoke 44 may be further configured as a zigzag structure formed by an outer peripheral portion and a connecting portion to form two circumferentially closed regions, the first coil 46 is wound around the connecting portion, the second magnet 45 is respectively disposed in each circumferentially closed region, magnetic lines of force of the two second magnets 45 respectively pass through a corresponding one of the circumferentially closed regions to form a closed magnetic path, so that magnetic lines of force of each second magnet 45 are uniformly distributed in the corresponding circumferentially closed region, wherein, in order to ensure stability of the driving mechanism, a structural size of the two circumferentially closed regions and a structural size of the two second magnets 45 may be respectively the same. Can increase the magnetic force that can drive the camera lens motion through setting up two circumference enclosed regions and two second magnetite 45, when this first actuating mechanism is arranged in the camera module group of bulky camera lens, can provide sufficient drive power for the camera lens.

In one embodiment, two second magnets 45 are respectively disposed on the opposite side of each of the circumferentially closed regions from the connecting portion, that is, as shown in fig. 17, two second magnets 45 are respectively disposed on the first sides 441 of the two circumferentially closed regions, the two circumferentially closed regions share the same second side 442 as the connecting portion, and the magnetic force line distribution pattern of the second magnets 45 in the first drive mechanism shown in fig. 17 can be shown in fig. 18. In another embodiment, two second magnets 45 may be respectively disposed at two sides of the connecting portion, where the two sides refer to opposite sides of the connecting portion, and the first coil 46 is wound around the outer circumference of the two second magnets 45, that is, as shown in fig. 19, the first coil 46 and the two second magnets 45 are both disposed on one second side 442 shared between two circumferentially closed regions, wherein fig. 20 shows the magnetic force line distribution pattern of the second magnets 45 in the first driving mechanism of fig. 19.

In other embodiments, in the yoke 44 of the zigzag structure, one second magnet 45 may be disposed on a connecting portion between one of the circumferentially enclosed regions, and the other second magnet 45 may be disposed on the opposite side of the other circumferentially enclosed region from the connecting portion. Fig. 21, 23, 25 and 27 may also be referred to for the arrangement of the second magnet 45 in the yoke 44 of the zigzag structure in the embodiment of the present disclosure, where fig. 22 shows the magnetic flux distribution diagram of the second magnet 45 in fig. 21, fig. 24 shows the magnetic flux distribution diagram of the second magnet 45 in fig. 23, fig. 26 shows the magnetic flux distribution diagram of the second magnet 45 in fig. 25, and fig. 28 shows the magnetic flux distribution diagram of the second magnet 45 in fig. 27. Here, an example in which two second magnets 45 are provided in one circumferential enclosing section is shown in fig. 23, 25, and 27, whereby the electromagnetic force can be increased.

As shown in fig. 2, in the embodiment of the present disclosure, a sensor 140 for detecting the position of the first carrier 1 may be further disposed on the base 3 or the first carrier 1, and the first driving mechanism is controlled to drive the first carrier 1 to move by a required distance according to the position information of the first carrier 1 detected by the sensor 14. The sensor 14 may be a hall sensor, a photoelectric sensor, a magnetic grating sensor, or other types of position sensors. The magnetic grating sensor may be a combination of a magnetic grating and one of a TMR (Tunnel Magneto Resistance), a GMR (Giant Magneto Resistance), and a multi-hall sensor.

As still another embodiment for realizing the first driving mechanism, as shown in fig. 3 and 29, the first driving mechanism may include a second motor 47 provided on one of the base 3 and the first carrier 1 and a gear 48 driven to rotate by the second motor 47, and a rack 49 provided on the other of the base 3 and the first carrier 1 and cooperating with the gear 48 to generate relative movement. When the second motor 47 drives the gear 48 to rotate, the rack 49 is fixed on the base 3, so that the rotation of the gear 48 can be converted into linear motion, the gear 48 and the rack 48 generate relative displacement, and the first carrier 1 drives the lens to move relative to the base 3.

As still another embodiment for realizing the first driving mechanism, a piezoelectric linear motor having a piezoelectric vibrator and a resonator plate may be used as the first driving mechanism.

As one embodiment of implementing the second driving mechanism, as shown in fig. 30 to 34, the second driving mechanism may include a second coil 51 mounted on one of the first carrier 1 and the second carrier 2, and a third magnet 52 mounted on the other of the first carrier 1 and the second carrier 2 to cooperate with the second coil 51 to generate a relative movement. After being electrified, the second coil 51 can generate electromagnetic induction with the third magnet 52 to drive the third magnet 52 and further drive the second carrier 2 to move. For convenience of description, the second coil 51 is mounted on the first carrier 1, and the third magnet 52 is mounted on the second carrier 2, which are only exemplary and not intended to limit the disclosure.

In order to improve the stability of the movement of the lens group during the automatic focusing process and improve the imaging quality of the lens group, the driver may further comprise a second guide assembly. According to an embodiment of the present disclosure, as shown in fig. 30 to 32, the second guide assembly may include a plurality of balls 53 disposed between the first carrier 1 and the second carrier 2, and a guide groove 54 extending in the optical axis direction for receiving the balls 53 is provided on one of the first carrier 1 and the second carrier 2. The balls 53 can support the second carrier 2 all the time during the movement of the second carrier 2 relative to the first carrier 1, so that the second carrier 2 can slide smoothly. Further, since the guide groove 54 extends in the optical axis direction, the movement locus of the ball 53 is restricted in the guide groove 54, and thus, it can play a role of guiding during the movement of the second carrier 2.

According to another embodiment of the second guide assembly of the present disclosure, as shown in fig. 33 and 34, the driver further includes two second guide rods 7 extending in the optical axis direction and penetrating through the second carrier 2, and the second carrier 2 is provided with a third slide 21 and a fourth slide 22 through which the two second guide rods 7 respectively penetrate, so that the second carrier 2 can slide along the second guide rods 7. In addition to the third and fourth runners 21, 22 being configured in such a way that holes or slots are made in the carriers as in the first guide assembly described above, it is also possible to form, on the first carrier 1, first and

second supports

15, 16 for supporting the second guide bar 7, respectively, in such a way that, when the first and

second carriers

1, 2 are configured as sheet metal parts, respectively, the first support 15 is formed with a V-shaped slot, the second support 16 is flat and straight, and the supports together with the plate-shaped second carrier 2 form the first and second runners 21, 22 through which the second guide bar 7 passes.

Like the first guiding assembly, the third slide 21 can also be configured to have a V-shaped cross section tangent to the second guiding rod 7 to radially limit the first carrier 1 and avoid wobbling during sliding. The fourth slideway 22 is configured such that the cross section has a straight portion tangent to the second guide bar 7, so that the two first guide bars 6 can jointly support the first carrier 1, and the stability of the first guide bars 6 for supporting the first carrier 1 is improved. The situation that the optical axis of the second lens 200 deflects in the process of moving along with the second carrier 2 can be avoided by arranging the second guide assembly, and the imaging quality is improved.

In the present disclosure, a reed (not shown in the figure) may be further disposed between the first carrier 1 and the second carrier 2. When the spring force generated by the spring is balanced with the electromagnetic force generated by the second coil 51 and the third magnet 52, the second carrier 2 is kept stationary. The input current of the second coil 51 is adjusted to drive the stroke of the second carrier 2 to change. The range of stroke variation actually required for the second carrier 2 can be achieved by selecting springs with different spring constants, the greater the stroke (spring deformation) the greater the pressure.

As other embodiments for implementing the second driving mechanism, the second driving mechanism may also employ a piezoelectric linear motor having a piezoelectric vibrator and a resonance piece, and an SMA linear motor having a memory metal feature. It should be understood that the second guide assembly described above as applied to the second drive mechanism having the second coil 51 and the third magnet 52 can be applied to both piezoelectric linear motors and SMA linear motors as well.

According to an embodiment of the present disclosure, as shown in fig. 35 and 36, the first and

second carriers

1 and 2 may be disposed on the same side of the first and

second lenses

100 and 200 in the optical axis direction, or, as shown in fig. 37 and 38, the first and

second carriers

1 and 2 may be disposed on both sides of the first and

second lenses

100 and 200 in the optical axis direction, respectively. Through above-mentioned technical scheme for this driver that opens can be according to the holistic overall arrangement of the module of making a video recording and select first actuating mechanism and second actuating mechanism's relative position in a flexible way, make full use of make a video recording the space of module.

In one embodiment of the present disclosure, the actuator may further include a third carrier (not shown) and a third actuator. Wherein the third carrier is arranged on the second carrier 2 for mounting a third lens, and the third driving mechanism is used for driving the third carrier to move on the second carrier 2 along the direction of the optical axis. It should be noted that the present disclosure does not limit the number of lenses to 3, but a fourth carrier for mounting a fourth lens may be continuously provided on the third carrier, and so on, according to actual needs, so that a plurality of lenses can be driven to move in the optical axis direction. In other embodiments of the present disclosure, a plurality of second carriers 2 and a plurality of second driving mechanisms corresponding to the second carriers 2 may be provided on the first carrier 1. I.e. having a plurality of second carriers 2, which plurality of second carriers 2 are each arranged on the first carrier 1, rather than being arranged one above the other. The skilled person can select between the above two ways for mounting a plurality of carriers according to actual needs, or mix the two ways, and the two ways are not limited herein.

Alternatively, the second drive mechanism may be assembled or integrally provided on the first carrier 1. For example, the second drive mechanism may comprise a fixed base for mounting on the first carrier 1, on which the second drive mechanism is assemblably mounted. Alternatively, the second driving mechanism and the first carrier 1 are integrally formed, that is, the second driving mechanism and the first carrier 1 are not detachable.

As an embodiment for realizing communication and power supply of the driver, as shown in fig. 39 to 42, the driver includes two fixing portions 81 disposed opposite to each other, and a signal transmission member 82 disposed between the two fixing portions 81 in a bending manner, wherein two ends of the signal transmission member 82 are respectively connected to the corresponding fixing portions 81, the first carrier 1 is connected to a middle portion of the signal transmission member 82, and is configured to drag the middle portion of the signal transmission member 82 so that the signal transmission member 82 abuts against or is separated from the fixing portions 81 in a vertical direction. In the embodiment shown in fig. 1 to 3, the fixing portion 81 may be the chassis 3 or the housing 9 of the camera module. The signal transmission member 82 may be an FPC.

When the first carrier 1 moves from the first state shown in fig. 39 to the second state shown in fig. 40, it carries the middle portion of the signal transmission member 82 to the right in the direction of the drawing. In this process, since the two ends of the signal transmission member 82 are respectively connected to the corresponding fixed portions 81, the relative movement between the signal transmission member and the fixed portions 81 is not a translational manner capable of generating friction, but gradually departs from the fixed portions 81 in a vertical direction, specifically, in an up-down direction in the drawing plane direction. Similarly, specifically, when the first carrier 1 moves from the second state shown in fig. 40 to the first state shown in fig. 39, it carries the middle portion of the signal transmission member 82 to the left in the direction of the drawing, and the signal transmission member 82 gradually abuts against the fixing portion 81 in the vertical direction without generating friction.

The two ends of the signal transmission member 82 are respectively connected with the corresponding fixing portions 81, and the first carrier 1 drags the middle of the signal transmission member 82 to make the signal transmission member 82 abut against or separate from the fixing portions 81 in the vertical direction, so that the signal transmission member 82 does not generate friction with the fixing portions 81 in the moving process, and failure risks such as abrasion of the signal transmission member 82, short circuit, breakage and the like are avoided.

With continued reference to fig. 39 and 40, according to one embodiment of the present disclosure, signal transmission member 82 assumes a substantially M-shaped configuration during movement in accordance with the movement described above. Specifically, the signal transmission member 82 is configured as an M-shaped structure formed by a first signal transmission section 21 and a second signal transmission section 22, wherein the first signal transmission section 821 and the second signal transmission section 822 are respectively U-shaped, the first carrier 1 is connected to the intersection of the first signal transmission section 821 and the second signal transmission section 822, and the first carrier 1 simultaneously drives the first signal transmission section 821 and the second signal transmission section 822 to move, so that the first signal transmission section 821 and the second signal transmission section 822 respectively contact or separate from the fixing portion 81 along the vertical direction, and friction with the fixing portion 81 is avoided.

In accordance with another embodiment of the present disclosure, with continued reference to fig. 41 and 42, the signal transmission member 82 assumes a generally U-shaped configuration during movement in accordance with the movement described above. Specifically, the first end of the signal transmission member 82 is connected to the second fixing portion 812, and the first carrier 1 is connected to the second end of the signal transmission member 82. The driver further comprises a stopper 83 arranged between the signal transmission member 82 and the first fixing portion 811 for spacing the signal transmission member 82 from the first fixing portion 811, the stopper 83 being connected to the second end of the signal transmission member 82 such that the first carrier 1 simultaneously carries along the signal transmission member 82 and the stopper 83 in movement.

When the first carrier 1 moves from the first state shown in fig. 41 to the second state shown in fig. 42, it carries the second end of the signal transmission member 82 to the right in the direction of the drawing. In the process, since the first end of the signal transmission member 82 is connected to the second fixing portion 812, the relative movement between the signal transmission member and the second fixing portion 812 is not a translational manner capable of generating friction, but gradually departs from the second fixing portion 812 in the vertical direction, specifically in the up-down direction of the drawing plane direction, and in the process, since the second end of the signal transmission member 82 is connected to the stopper 83, the relative movement between the signal transmission member and the stopper 83 is not a translational manner capable of generating friction, but gradually abuts against the stopper 83 in the vertical direction, specifically in the up-down direction of the drawing plane direction, so that the signal transmission member 82 does not directly contact with the second fixing portion 812 to generate friction. Similarly, when the first carrier 1 moves from the second state shown in fig. 42 to the first state shown in fig. 41, it drives the second end of the signal transmission member 82 to the left side in the direction of the figure, the first end of the signal transmission member 82 gradually abuts against the second fixing portion 812 in the vertical direction without friction, and the second end of the signal transmission member 82 gradually separates from the stopper 83 in the vertical direction without friction.

Since the signal transmission member 82 and the first fixing portion 811 are separated by the stopper 83, when the first carrier 1 drives the signal transmission member 82 to move, the signal transmission member 82 and the stopper 83 move simultaneously, so that the signal transmission member 82 and the first fixing portion 811 do not generate a contact surface friction phenomenon, and the failure risks of abrasion of the signal transmission member 82, short circuit, fracture and the like are avoided.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, various possible combinations will not be separately described in this disclosure.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. A driver, comprising

A base (3);

a first carrier (1) movably arranged on the base (3) for mounting a first lens (100);

the first driving mechanism is used for driving the first carrier (1) to move in a reciprocating mode along the direction of an optical axis and comprises a first motor (41) arranged on one of the base (3) and the first carrier (1), a screw rod (42) driven by the first motor (41) to rotate, and a U-shaped clamping structure (43) which is arranged on the other one of the base (3) and the first carrier (1) and is used for being matched with the screw rod (42) to generate relative movement, and the U-shaped clamping structure (43) is configured to have elastic force capable of abutting against the screw rod (42);

a second carrier (2) movably disposed on the first carrier (1) for mounting a second lens (200); and

a second driving mechanism for driving the second carrier (2) to reciprocate on the first carrier (1) in the direction of the optical axis to adjust the distance between the first lens (100) and the second lens (200), the second driving mechanism including a second coil (51) mounted on one of the first carrier (1) and the second carrier (2), and a third magnet (52) mounted on the other of the first carrier (1) and the second carrier (2) to cooperate with the second coil (51) to generate a relative movement.

2. The drive according to claim 1, characterized in that the drive further comprises two first guide rods (6) extending in the direction of the optical axis and penetrating through the first carrier (1), the first carrier (1) being provided with a first slideway (11) and a second slideway (12) for the two first guide rods (6) to penetrate through respectively, such that the first carrier (1) can slide along the first guide rods (6);

the first slideway (11) is configured to: the cross section of the first guide rod is provided with a V-shaped part tangent to the two positions of the first guide rod (6); the second slideway (12) is configured to: the cross section has a straight portion tangent to the first guide bar (6), the first slideway (11) and the second slideway (12) abutting against the respective first guide bar (6) from the same side.

3. The drive according to claim 2, characterized in that the first slideway (11) is a first through hole or a first slot provided along the extension direction of the first guide rod (6); the second slide way (12) is a second through hole or a second groove arranged along the extending direction of the first guide rod (6).

4. An actuator according to claim 2, wherein the first guide bar (6) is made of magnetically conductive material, and the first carrier (1) is provided with at least one first magnet (13) for attracting the first guide bar (6) to tangency with the first slideway (11) and the second slideway (12).

5. An actuator according to claim 1, wherein the U-shaped clamping structure (43) comprises two first clamping members (431) extending from the base (3) or the first carrier (1) to both sides of the screw (42), the first clamping members (431) being formed as side walls of the U-shaped clamping structure (43).

6. An actuator according to claim 1, wherein the U-shaped clamping structure (43) comprises a straight piece (432) extending from the base (3) or the first carrier (1), and two second clamping pieces (433) extending from the straight piece (432) to both sides of the screw (42), the second clamping pieces (433) being formed as side walls of the U-shaped clamping structure (43).

7. An actuator according to claim 1, characterized in that the U-shaped clamping structure (43) comprises a bend (434) extending from the base (3) or the first carrier (1), and two third clamping members (435) extending from the ends of the bend (434) to both sides of the screw (42), the third clamping members (435) being formed as side walls of the U-shaped clamping structure (43).

8. An actuator according to claim 1, further comprising a plurality of balls (53) disposed between the first carrier (1) and the second carrier (2), a guide groove (54) extending in the optical axis direction for accommodating the balls (53) being provided on one of the first carrier (1) and the second carrier (2).

9. The drive according to claim 1, characterized in that the drive further comprises two second guide rods (7) extending in the direction of the optical axis and penetrating through the second carrier (2), and the second carrier (2) is provided with a third slideway (21) and a fourth slideway (22) for the two second guide rods (7) to penetrate through respectively, so that the second carrier (2) can slide along the second guide rods (7);

the third slideway (21) is configured to: the cross section has a V-shaped portion tangent to the second guide bar (7), the fourth slideway (22) being configured: the cross section of the second guide rod (7) is provided with a tangent straight part, and the third slide way (21) and the fourth slide way (22) are abutted against the corresponding second guide rod (7) from the same side.

10. An actuator according to claim 1, wherein a reed is arranged between the first carrier (1) and the second carrier (2).

11. An actuator according to claim 1, wherein the first carrier (1) and the second carrier (2) are disposed on the same side of the first lens (100) and the second lens (200) in the optical axis direction; or, the first carrier (1) and the second carrier (2) are respectively disposed on both sides of the first lens (100) and the second lens (200) in an optical axis direction.

12. The driver of claim 1, further comprising:

the third carrier is arranged on the second carrier (2) and is used for mounting a third lens; and

a third drive mechanism for driving the third carrier to move on the second carrier (2) in the direction of the optical axis.

13. An actuator according to claim 1, wherein a plurality of the second carriers (2) and a plurality of second drive mechanisms corresponding to the second carriers (2) are provided on the first carrier (1).

14. An actuator according to claim 1, wherein the second drive mechanism is assemblable or integrally provided on the first carrier (1).

15. The driver according to claim 1, characterized in that the driver comprises two fixing portions (81) arranged oppositely and a signal transmission member (82) arranged between the two fixing portions (81) in a bending manner, wherein two ends of the signal transmission member (82) are respectively connected with the corresponding fixing portions (81), the first carrier (1) is connected to the middle of the signal transmission member (82) and is configured to drag the middle of the signal transmission member (82) to enable the signal transmission member (82) to abut against or separate from the fixing portions (81) along a vertical direction.

16. A driver according to claim 15, wherein the signal transmission member (82) is configured as an M-shaped structure formed by a first signal transmission segment (821) and a second signal transmission segment (822), the first signal transmission segment (821) and the second signal transmission segment (822) being respectively U-shaped, the first carrier (1) being connected at an intersection of the first signal transmission segment (821) and the second signal transmission segment (822).

17. An actuator according to claim 15, wherein the signal transmission member (82) is of a U-shaped configuration, a first end of the signal transmission member (82) being connected to the second fixing portion (812), the first carrier (1) being connected to a second end of the signal transmission member (82); the driver further comprises a stopper (83) arranged between the signal transmission member (82) and the first fixing part (811) and used for separating the signal transmission member (82) from the first fixing part (811), wherein the stopper (83) is connected to the second end of the signal transmission member (82) so that the first carrier (1) can drive the signal transmission member (82) and the stopper (83) to move simultaneously.

18. A driver, comprising

A base (3);

a first driving mechanism for driving the first carrier (1) to reciprocate in a direction of an optical axis, the first driving mechanism including a yoke (44) provided on one of the base (3) and the first carrier (1), a second magnet (45) provided on the yoke (44), and a first coil (46) provided on the other of the base (3) and the first carrier (1), the yoke (44) including a circumferential sealing section, the second magnet (45) being provided on an inner wall of a first side (441) of the circumferential sealing section, the first coil (46) being configured to be wound around the first side (441) or a second side (442) opposite to the first side (441) and capable of producing a relative movement with the yoke (44);

19. An actuator according to claim 18, further comprising two first guide rods (6) extending in the direction of the optical axis and penetrating through the first carrier (1), wherein the first carrier (1) is provided with a first slideway (11) and a second slideway (12) for the two first guide rods (6) to penetrate through respectively, so that the first carrier (1) can slide along the first guide rods (6);

20. The drive according to claim 19, characterized in that the first slideway (11) is a first through hole or a first slot provided along the extension direction of the first guide rod (6); the second slide way (12) is a second through hole or a second groove arranged along the extending direction of the first guide rod (6).

21. An actuator according to claim 19, wherein the first guide bar (6) is made of magnetically conductive material, and wherein the first carrier (1) is provided with at least one first magnet (13) for attracting the first guide bar (6) to tangency with the first slideway (11) and the second slideway (12).

22. The actuator according to claim 18, wherein said yoke (44) is constructed in a zigzag structure formed by an outer peripheral portion and a connecting portion to form two said circumferentially closed spaces, said first coil (46) being wound around said connecting portion, said second magnet (45) being provided in each of said circumferentially closed spaces, respectively.

23. The driver according to claim 22, wherein the yoke (44) is configured in a rectangular shape to form the circumferentially enclosed space, the second magnet (45) is disposed at a side of the rectangular shape, and the first coil (46) is wound to an outer periphery of the second magnet (45).

24. The driver according to claim 22, wherein the yoke (44) is configured in a rectangular shape to form the circumferentially enclosed space, the second magnet (45) is disposed on one side of the rectangular shape, and the first coil (46) is wound around the side of the rectangular shape opposite to the second magnet (45).

25. The driver according to claim 18, wherein the yoke (44) is configured in a rectangular shape to form the circumferentially enclosed space, the second magnet (45) is disposed at a side of the rectangular shape, and the first coil (46) is wound to an outer periphery of the second magnet (45).

26. The driver according to claim 18, wherein the yoke (44) is configured in a rectangular shape to form the circumferentially enclosed space, the second magnet (45) is disposed on one side of the rectangular shape, and the first coil (46) is wound around the side of the rectangular shape opposite to the second magnet (45).

27. An actuator according to claim 18, further comprising a plurality of balls (53) arranged between the first carrier (1) and the second carrier (2), a guide groove (54) extending in the optical axis direction for accommodating the balls (53) being provided on one of the first carrier (1) and the second carrier (2).

28. The drive according to claim 18, characterized in that the drive further comprises two second guide rods (7) extending in the direction of the optical axis and penetrating through the second carrier (2), and the second carrier (2) is provided with a third slideway (21) and a fourth slideway (22) for the two second guide rods (7) to penetrate through respectively, so that the second carrier (2) can slide along the second guide rods (7);

29. An actuator according to claim 18, wherein a reed is arranged between the first carrier (1) and the second carrier (2).

30. An actuator according to claim 18, wherein the first carrier (1) and the second carrier (2) are disposed on the same side of the first lens (100) and the second lens (200) in the optical axis direction; or, the first carrier (1) and the second carrier (2) are respectively disposed on both sides of the first lens (100) and the second lens (200) in an optical axis direction.

31. The driver of claim 18, further comprising:

32. An actuator according to claim 18, wherein a plurality of the second carriers (2) and a plurality of second drive mechanisms corresponding to the second carriers (2) are provided on the first carrier (1).

33. An actuator according to claim 18, wherein the second drive mechanism is assemblable or integrally provided on the first carrier (1).

34. The driver according to claim 18, wherein the driver comprises two fixing portions (81) arranged oppositely and a signal transmission member (82) arranged between the two fixing portions (81) in a bending manner, wherein two ends of the signal transmission member (82) are respectively connected with the corresponding fixing portions (81), and the first carrier (1) is connected to the middle of the signal transmission member (82) and is configured to drag the middle of the signal transmission member (82) to enable the signal transmission member (82) to abut against or separate from the fixing portions (81) along a vertical direction.

35. A driver according to claim 34, wherein the signal transmission member (82) is configured as an M-shaped structure formed by a first signal transmission segment (821) and a second signal transmission segment (822), the first signal transmission segment (821) and the second signal transmission segment (822) being respectively U-shaped, the first carrier (1) being connected at an intersection of the first signal transmission segment (821) and the second signal transmission segment (822).

36. An actuator according to claim 34, wherein the signal transmission member (82) is of a U-shaped configuration, a first end of the signal transmission member (82) being connected to the second fixing portion (812), the first carrier (1) being connected to a second end of the signal transmission member (82); the driver further comprises a stopper (83) arranged between the signal transmission member (82) and the first fixing part (811) and used for separating the signal transmission member (82) from the first fixing part (811), wherein the stopper (83) is connected to the second end of the signal transmission member (82) so that the first carrier (1) can drive the signal transmission member (82) and the stopper (83) to move simultaneously.

37. A driver, comprising

A base (3);

a first driving mechanism for driving the first carrier (1) to reciprocate along the direction of the optical axis, the first driving mechanism comprising a second motor (47) arranged on one of the base (3) and the first carrier (1) and a gear (48) driven by the second motor (47) to rotate, and a rack (49) arranged on the other of the base (3) and the first carrier (1) and matched with the gear (48) to generate relative movement;

38. An actuator according to claim 37, further comprising two first guide rods (6) extending in the direction of the optical axis and penetrating through the first carrier (1), wherein the first carrier (1) is provided with a first slideway (11) and a second slideway (12) for the two first guide rods (6) to penetrate through respectively, so that the first carrier (1) can slide along the first guide rods (6);

39. The drive according to claim 38, characterized in that said first slideway (11) is a first through hole or a first slot provided along the extension direction of said first guide rod (6); the second slide way (12) is a second through hole or a second groove arranged along the extending direction of the first guide rod (6).

40. An actuator according to claim 38, wherein the first guide bar (6) is made of magnetically conductive material, and wherein the first carrier (1) is provided with at least one first magnet (13) for attracting the first guide bar (6) to tangency with the first slideway (11) and the second slideway (12).

41. An actuator according to claim 37, further comprising a plurality of balls (53) arranged between the first carrier (1) and the second carrier (2), a guide groove (54) extending in the optical axis direction for accommodating the balls (53) being provided on one of the first carrier (1) and the second carrier (2).

42. The drive according to claim 37, characterized in that it further comprises two second guide rods (7) extending in the direction of the optical axis and passing through the second carrier (2), the second carrier (2) being provided with a third slideway (21) and a fourth slideway (22) for passing the two second guide rods (7), respectively, such that the second carrier (2) can slide along the second guide rods (7);

43. An actuator according to claim 37, wherein a reed is arranged between the first carrier (1) and the second carrier (2).

44. An actuator according to claim 37, wherein the first carrier (1) and the second carrier (2) are disposed on the same side of the first lens (100) and the second lens (200) in the optical axis direction; or, the first carrier (1) and the second carrier (2) are respectively disposed on both sides of the first lens (100) and the second lens (200) in an optical axis direction.

45. The driver of claim 37, further comprising:

46. An actuator according to claim 37, wherein a plurality of the second carriers (2) and a plurality of second drive mechanisms corresponding to the second carriers (2) are provided on the first carrier (1).

47. An actuator according to claim 37, wherein the second drive mechanism is assemblable or integrally provided on the first carrier (1).

48. The driver according to claim 37, wherein the driver comprises two fixing portions (81) arranged oppositely and a signal transmission member (82) arranged between the two fixing portions (81) in a bending manner, wherein two ends of the signal transmission member (82) are respectively connected with the corresponding fixing portions (81), and the first carrier (1) is connected to the middle of the signal transmission member (82) and is configured to drag the middle of the signal transmission member (82) to enable the signal transmission member (82) to abut against or separate from the fixing portions (81) along a vertical direction.

49. A driver according to claim 48, wherein the signal transmission member (82) is configured as an M-shaped structure formed by a first signal transmission segment (821) and a second signal transmission segment (822), the first signal transmission segment (821) and the second signal transmission segment (822) being respectively U-shaped, the first carrier (1) being connected at the intersection of the first signal transmission segment (821) and the second signal transmission segment (822).

50. An actuator according to claim 48, wherein the signal conduit member (82) is of a U-shaped configuration, a first end of the signal conduit member (82) being connected to the second fixed portion (812), and the first carrier (1) being connected to a second end of the signal conduit member (82); the driver further comprises a stopper (83) arranged between the signal transmission member (82) and the first fixing part (811) and used for separating the signal transmission member (82) from the first fixing part (811), wherein the stopper (83) is connected to the second end of the signal transmission member (82) so that the first carrier (1) can drive the signal transmission member (82) and the stopper (83) to move simultaneously.

51. A camera module comprising a driver according to any one of claims 1 to 50.