CN214544446U

CN214544446U - Driving device, camera module and electronic equipment

Info

Publication number: CN214544446U
Application number: CN202023313860.0U
Authority: CN
Inventors: 李广锁; 邹远征
Original assignee: Nanchang OFilm Optoelectronics Technology Co Ltd
Current assignee: Nanchang OFilm Tech Co Ltd; Nanchang OFilm Optoelectronics Technology Co Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-10-29
Anticipated expiration: 2030-12-31

Abstract

The application provides a drive arrangement, module and electronic equipment make a video recording. The drive device includes: a base; the plurality of drivers are arranged in the base and each driver comprises a moving part and a driving part, one end of each moving part is abutted to the corresponding driving part, the other end of each moving part stretches out of the base in a protruding mode, one end of each driving part is connected with the corresponding moving part, the other end of each driving part is fixed in the corresponding base, and the driving parts drive the corresponding moving parts to move along the direction of the optical axis. The driving part in the driving device can deform and drive the moving part to move along the optical axis direction when being powered on, so that the optical lens connected with the moving part is driven to move, the functions of optical anti-shake and automatic focusing can be realized, the displacement of the optical lens can be accurately controlled, the precision is high, and the imaging quality is good.

Description

Driving device, camera module and electronic equipment

Technical Field

The utility model relates to an optics anti-shake technical field especially relates to a drive arrangement, module and electronic equipment make a video recording.

Background

Auto Focus (AF) is to use the light reflection principle of a subject, image and receive reflected light on an image sensor after passing through a lens, obtain the object distance of the subject through computer processing, and automatically move the lens according to the object distance to finish focusing.

Optical Image Stabilization (OIS) is a method of detecting shake by a gyroscope and then translating or rotating the entire lens in the opposite direction by an OIS motor to compensate for image blur caused by shake of a terminal device during exposure.

For a conventional lens, it is common to drive the lens to move or rotate using different motor assemblies to achieve AF and OIS, respectively. In order to meet the demand of people for miniature zoom lenses, a novel optical element, namely a liquid lens, is provided, which dynamically adjusts the refractive index of the lens or changes the focal length by changing the surface shape of the lens and realizes optical anti-shake.

For a liquid lens, AF and OIS of the liquid lens can be simultaneously achieved by driving of the same motor assembly. In the process of implementing the present application, the inventor finds that at least the following problems exist in the prior art: the driving device of the liquid lens at present can not accurately control the displacement deformation of the liquid lens when carrying out automatic focusing and optical anti-shake, thereby being incapable of obtaining good automatic focusing and optical anti-shake effects.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide a driving device, an image pickup module and an electronic apparatus to solve the above problems.

An embodiment of the utility model provides a driving device, include:

a base;

the plurality of drivers are arranged in the base and each driver comprises a moving part and a driving part, one end of each moving part is abutted to the corresponding driving part, the other end of each moving part stretches out of the base in a protruding mode, one end of each driving part is connected with the corresponding moving part, the other end of each driving part is fixed in the corresponding base, and the driving parts drive the corresponding moving parts to move in the direction of the optical axis.

The driving part in the driving device can deform and drive the moving part to move along the optical axis direction when being powered on, so that the optical lens connected with the moving part is driven to move, the functions of optical anti-shake and automatic focusing can be realized, the displacement of the optical lens can be accurately controlled, the precision is high, and the imaging quality is good.

In some embodiments, the driver comprises a shape memory alloy.

So, can guarantee that the driving piece takes place deformation after the circular telegram to the drive moving piece moves along the optical axis direction.

In some embodiments, the base comprises:

a substrate;

a cover plate opposite to the substrate;

the side plates are enclosed between the base plate and the cover plate, and the driver is arranged in a space enclosed by the base plate, the cover plate and the side plates.

The base can accommodate the moving part and fix the driving part.

In some embodiments, the base has an accommodating hole, the accommodating hole penetrates through the base plate and the cover plate, a limiting groove is arranged on one side of the cover plate close to the accommodating hole, the limiting groove is matched with the profile of the moving element, and at least part of the moving element is arranged in the limiting groove.

Therefore, the movement of the moving part in the direction vertical to the optical axis can be limited, and the precision of optical anti-shake or automatic focusing is improved.

In some embodiments, the moving member is a hollow cylinder, and the driving member includes:

the first connecting part is connected in the base;

the second connecting part is arranged between the moving part and the substrate; and

the deformation portion is arranged inside the moving member, two ends of the deformation portion are connected with the first connecting portion and the second connecting portion respectively, the deformation portion deforms when the first connecting portion is powered on and drives the moving member to move along the direction of the optical axis, and the deformation portion is made of shape memory alloy.

So, can switch on deformation portion when circular telegram to first connecting portion to deformation portion takes place deformation and drives the motion of moving member.

In some embodiments, a containing groove is formed in one side of the moving member;

the first connecting part is provided with a first end and a second end which are opposite, the first end is arranged in the accommodating groove, and the second end extends out of the accommodating groove and is fixed in the base;

one end of the deformation part is connected to the first end of the first connecting part.

Thus, the first connecting part can be fixed, and the deformation part can be connected with the second connecting part.

In some embodiments, further comprising:

the circuit board is arranged in the accommodating hole and arranged around the inner side surfaces of the side plates, and the second end of the first connecting part is electrically connected with the circuit board; the position of the circuit board corresponding to the driving piece is provided with a supporting part, the second end of the first connecting part extends to the supporting part and the cover plate, the second end of the first connecting part is provided with a first side and a second side which are opposite, the first side is abutted against the cover plate, and the second side is abutted against the supporting part to realize electric connection.

So, the space that the circuit board occupy is less to make drive arrangement's volume less, and supporting part and apron can fix first connecting portion, still can switch on first connecting portion.

In some embodiments, further comprising:

and the elastic pieces are arranged at the positions of the substrate corresponding to the second connecting parts of the driver so as to elastically support the second connecting parts.

Therefore, the moving part can be ensured to return to the initial position after power failure.

In some embodiments, the substrate is provided with a protrusion at a position corresponding to the elastic member, and each of the elastic members includes:

the bearing part is abutted against the protruding part;

the recovery part is arranged on one side, close to the axis of the accommodating hole, of the bearing part in a suspended mode, and the second connecting part abuts against the recovery part; and

the fixing part is respectively connected with the bearing part and the restoring part.

Therefore, the restoring part can ensure that the moving part restores to the initial position after the power is cut off.

In some embodiments, further comprising:

and the position sensor is arranged in the accommodating hole and used for sensing the moving position of the moving member.

Therefore, the moving position of the moving part can be sensed, and the precision of optical anti-shake is improved.

The embodiment of the utility model provides a still provide a camera module, include:

a drive device as described above; and

the optical lens is arranged on one side of the driving device and connected with one end of the plurality of drivers, and the optical lens comprises a liquid lens.

The camera module comprises a driving device, a driving piece in the driving device can deform and drive the moving piece to move along the optical axis direction when being powered on, so that the optical lens connected with the moving piece is driven to move, the functions of optical anti-shake and automatic focusing can be realized, the displacement of the optical lens can be accurately controlled, the precision is high, and the imaging quality is good.

An embodiment of the utility model provides an electronic equipment is still provided, include:

a body; and

like the module of making a video recording above-mentioned, the module setting of making a video recording is in on the body.

Above-mentioned electronic equipment includes drive arrangement, but drive piece among the drive arrangement is when the circular telegram deformation and drive the moving member and move along the optical axis direction to drive the motion of the optical lens who is connected with the moving member, can realize optics anti-shake and auto focus's function, and can accurate control optical lens's displacement, the precision is higher, and imaging quality is better.

Drawings

Fig. 1 is a schematic perspective view of a camera module according to an embodiment of the present application.

Fig. 2 is an exploded schematic view of the camera module shown in fig. 1.

Fig. 3 is a schematic cross-sectional structure view of the camera module shown in fig. 1.

Fig. 4 is a schematic perspective structure diagram of an electronic device according to an embodiment of the present application.

Description of the main elements

Electronic device 300

Body 200

Camera module 100

Drive device 10

Base 12

Receiving hole 122

Substrate 124

Protrusion 1242

Cover plate 126

Limiting groove 1262

Side panel 128

Driver 14

Moving part 142

Clamping part 1422

Accommodating groove 1424

Driving member 144

First connection portion 1441

Second connecting part 1442

Deformation part 1443

First end 1444

Second end 1445

First side 1446

Second side 1447

Circuit board 16

Supporting part 162

Elastic member 18

Receiving part 182

Restoring portion 184

Fixed part 186

Optical lens 20

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "electrically connected" to another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "electrically connected" to another component, it can be connected by contact, e.g., by wires, or by contactless connection, e.g., by contactless coupling.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Referring to fig. 1, an embodiment of the present invention provides a camera module 100, which includes a driving device 10 and an optical lens 20 connected to each other.

Referring to fig. 2 and 3, the driving device 10 includes a base 12 and a plurality of drivers 14.

The base 12 has a receiving hole 122. The plurality of drivers 14 are disposed in the accommodating hole 122, each driver 14 includes a moving member 142 and a driving member 144, one end of the moving member 142 abuts against the base 12, the other end protrudes out of the base 12, one end of the driving member 144 is connected to the moving member 142, the other end is fixed in the base 12, and the driving member 144 drives the moving member 142 to move along the axial direction of the accommodating hole 122. Wherein the axial direction of the receiving hole 122 coincides with the optical axis direction.

The driving element 144 in the driving device 10 is deformable when being powered on and drives the moving element 142 to move along the axis of the accommodating hole 122, so as to drive the optical lens 20 connected to the moving element 142 to move, thereby achieving the functions of optical anti-shake and auto-focusing, and accurately controlling the displacement of the optical lens 20, and having higher precision and better imaging quality.

The base 12 includes a base plate 124, a cover plate 126, and a plurality of side plates 128.

The substrate 124 is substantially rectangular.

The cover plate 126 has the same shape as the base plate 124 and is disposed opposite to the base plate 124, and the receiving holes 122 respectively penetrate through the base plate 124 and the cover plate 126. A limiting groove 1262 is formed in one side of the cover plate 126 close to the receiving hole 122, the limiting groove 1262 is matched with the shape of the moving member 142, and at least part of the moving member 142 is disposed in the limiting groove 1262.

In this embodiment, a portion of the outer periphery of the moving member 142 is disposed in the stopper groove 1262. In other embodiments, the entire periphery of the moving member 142 is disposed within the retaining groove 1262. Therefore, the movement of the moving member 142 in the direction perpendicular to the axis of the receiving hole 122 can be limited, and the precision of optical anti-shake can be improved.

The plurality of side plates 128 are enclosed between the base plate 124 and the cover plate 126, and the space enclosed by the plurality of side plates 128 is communicated with the accommodating hole 122.

In the present embodiment, the plurality of side plates 128 and the cover plate 126 are of a unitary construction.

In the present embodiment, the number of the side plates 128 is four, and in this case, the shape surrounded by the base plate 124, the cover plate 126, and the plurality of side plates 128 is a rectangular parallelepiped. In other embodiments, the base plate 124, the cover plate 126 and the side plates 128 are formed in a cylindrical shape, but not limited thereto.

The plurality of drivers 14 can be independently controlled, for example, by individually inputting control instructions to the plurality of drivers 14, so that the plurality of drivers 14 can be independently controlled; the plurality of drivers 14 may also be controlled integrally, for example, by inputting the same command to the plurality of drivers 14 to control the plurality of drivers 14 to move synchronously; of course, the same command may be input to several drivers 14 of the plurality of drivers 14 to control the movement of the several drivers 14, that is, the plurality of drivers 14 may be independently controlled to move individually, the plurality of drivers 14 may be controlled to move together, or the plurality of drivers 14 may be divided into a plurality of groups, so that the plurality of groups of drivers 14 are independently controlled.

In this embodiment, the driving device 10 includes four drivers 14, and the four drivers 14 are respectively located on four sides of the driving device 10. In other embodiments, the drive device 10 may include other numbers of drivers 14, such as, but not limited to, five, six, or eight.

The moving member 142 is substantially cylindrical. The end of the moving member 142 protruding out of the base 12 is provided with a clamping portion 1422, the clamping portion 1422 is detachably connected to the optical lens 20, in this embodiment, the clamping portion 1422 is a hook.

It is understood that the clip portion 1422 may have other structures, and it is within the scope of the present application as long as the clip portion 1422 can be detachably connected to the optical lens 20. One side of the moving member 142 is provided with a receiving groove 1424, and the receiving groove 1424 penetrates through an end of the moving member 142 away from the clamping portion 1422.

The drive member 144 is made of a shape memory alloy. The driving member 144 includes a first connecting portion 1441, a second connecting portion 1442, and a deformation portion 1443.

The first connecting portion 1441 has a first end 1444 and a second end 1445 opposite to each other, the first end 1444 is disposed in the receiving groove 1424, and the second end 1445 extends out of the receiving groove 1424 and is fixed in the base 12.

Second connection part 1442 the second connection part 1442 is provided between the moving member 142 and the base plate 124.

The deformation portion 1443 is disposed in the receiving groove 1424, and two ends of the deformation portion 1443 are respectively connected to the first end 1444 of the first connection portion 1441 and the second connection portion 1442 of the second connection portion 1442, and the first connection portion 1441 can conduct the deformation portion 1443 when the power is turned on, so that the deformation portion 1443 deforms and drives the moving member 142 to move along the axis of the receiving hole 122. In this embodiment, the deformation unit 1443 has a thin cylindrical shape.

In some embodiments, the drive device 10 further includes a circuit board 16. The circuit board 16 is substantially a rectangular ring-shaped circuit board 16 disposed in the receiving hole 122 and surrounding the inner side surfaces of the side plates 128, the second end 1445 of the first connecting portion 1441 is electrically connected to the circuit board 16, and the circuit board 16 occupies a small space, so that the driving device 10 has a small volume.

The circuit board 16 is provided with a support portion 162 at a position corresponding to the driving member 144, wherein the support portion 162 is formed by extending a portion of a side of the circuit board 16 toward an axis of the receiving hole 122. The second end 1445 of the first connecting portion 1441 extends between the supporting portion 162 and the cover plate 126, the second end 1445 of the first connecting portion 1441 has a first side 1446 and a second side 1447 opposite to each other, the first side 1446 abuts against the cover plate 126, and the second side 1447 abuts against the supporting portion 162 to achieve electrical connection. In this way, the supporting portion 162 and the cover plate 126 can fix the first connection portion 1441 and also conduct the first connection portion 1441.

In some embodiments, the driving device 10 further includes a plurality of elastic members 18, and each elastic member 18 is disposed at a position of the base plate 124 corresponding to the second connection part 1442 of the driver 14 to elastically support the second connection part 1442.

Specifically, the substrate 124 is provided with a protrusion 1242 at a position corresponding to the elastic member 18, and the protrusion 1242 is substantially in the shape of a letter of Chinese character 'tu'. Each elastic member 18 includes a receiving portion 182, a restoring portion 184 and a fixing portion 186.

The receiving portion 182 abuts against the protruding portion 1242 and is adapted to the shape of the protruding portion 1242.

The restoring portion 184 has a substantially rectangular shape. The restoring portion 184 is disposed in the receiving portion 182 on a side close to the axis of the receiving hole 122, and the second connecting portion 1442 abuts against the restoring portion 184.

The fixing portion 186 connects the receiving portion 182 and the restoring portion 184 respectively. Thus, the restoring portion 184 can ensure that the moving member 142 is restored to the initial position after the power is turned off.

In some embodiments, the driving device 10 further includes a plurality of position sensors (not shown) disposed in the receiving hole 122 and corresponding to the plurality of moving members 142 one to one for sensing the moving position of the moving members 142. Therefore, the moving position of the moving member 142 can be sensed, and the precision of optical anti-shake is improved.

The optical lens 20 is disposed at one side of the driving device 10 and connected to one end of the plurality of drivers 14, and the optical lens 20 includes a liquid lens and/or an electrochromic lens.

The liquid lens changes the wettability of the conductive liquid and the contact surface thereof by electrifying the conductive liquid in the liquid lens, so that the contact angle of the liquid surface is changed, the light path is changed, and the zooming is realized.

The electrochromic lens is made of electrochromic materials, and after the electrochromic lens is electrified, the color of the electrochromic lens can be changed, so that the size of the aperture can be changed, the light inlet quantity can be changed, the photographic requirements under different environments can be met, and the application range of the lens is also enlarged.

The optical lens 20 in the present embodiment includes a liquid lens. It is to be understood that the optical lens 20 further includes a common lens, wherein the common lens is a common optical lens distinguished from the liquid lens and the electrochromic lens.

When the camera module 100 is not in operation, the elastic element 18 elastically supports the moving element 142 of the driver 14 and the optical lens 20;

when the camera module 100 works, the first connecting portion 1441 can conduct the deformation portion 1443 after being powered on, so that the deformation portion 1443 deforms to drive the moving member 142 to move towards a direction close to an object along the axis of the accommodating hole 122, and accordingly, the liquid lens can be powered on as required to enable conductive liquid inside the liquid lens to be powered on, wettability of the conductive liquid and a contact surface of the conductive liquid is changed, a contact angle of the liquid surface is changed, a light path is changed, and zooming is achieved;

when the camera module 100 finishes working, the power supply to the first connection portion 1441 is stopped, and the restoring portion of the elastic element 18 can drive the moving element 142 to restore to the initial position.

The camera module 100 includes the driving device 10, the driving element 144 in the driving device 10 is deformable when being powered on and drives the moving element 142 to move along the axis direction of the accommodating hole 122, so as to drive the optical lens 20 connected with the moving element 142 to move, and thus the functions of optical anti-shake and automatic focusing can be realized, and the displacement of the optical lens 20 can be precisely controlled, the precision is high, and the imaging quality is good.

Referring to fig. 4, an embodiment of the present invention further provides an electronic apparatus 300, which includes a main body 200 and a camera module 100, wherein the camera module 100 is disposed on the main body 200.

The electronic device 300 includes, but is not limited to, imaging-enabled electronic devices such as smart phones, tablet computers, notebook computers, electronic book readers, Portable Multimedia Players (PMPs), portable phones, video phones, digital still cameras, mobile medical devices, wearable devices, and the like.

The electronic device 300 includes the driving device 10, the driving element 144 in the driving device 10 is deformable when being powered on and drives the moving element 142 to move along the axis direction of the accommodating hole 122, so as to drive the optical lens 20 connected to the moving element 142 to move, and thus the optical anti-shake and auto-focusing functions can be realized, and the displacement of the optical lens 20 can be precisely controlled, so that the precision is high, and the imaging quality is good.

The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit the same, and although the present invention has been described in detail with reference to the above preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present invention. Those skilled in the art can also make other changes and the like in the spirit of the present invention, and the design of the present invention can be used as long as the technical effects of the present invention are not deviated. Such variations are intended to be included within the scope of the invention as claimed.

Claims

1. A drive device, comprising:

a base;

the plurality of drivers are arranged in the base and each driver comprises a moving part and a driving part, one end of each moving part is abutted to the corresponding driving part, the other end of each moving part stretches out of the base in a protruding mode, one end of each driving part is connected with the corresponding moving part, the other end of each driving part is fixed in the corresponding base, and the driving parts drive the corresponding moving parts to move along the direction of the optical axis.

2. The drive of claim 1, wherein the drive member comprises a shape memory alloy.

3. The drive of claim 1, wherein the base comprises:

a substrate;

the cover plate is arranged opposite to the substrate;

4. The driving apparatus as claimed in claim 3, wherein the base has a receiving hole, the receiving hole penetrates through the base plate and the cover plate, a side of the cover plate close to the receiving hole is provided with a limiting groove, the limiting groove is adapted to an outer shape of the moving member, and at least a portion of the moving member is disposed in the limiting groove.

5. The drive of claim 4, wherein the moving member is hollow cylindrical, and the driving member comprises:

the first connecting part is connected in the base;

6. The driving apparatus as claimed in claim 5, wherein a receiving groove is formed at one side of the moving member;

7. The drive of claim 6, further comprising:

8. The drive of claim 5, further comprising:

9. The driving apparatus as claimed in claim 8, wherein said base plate is provided with a protrusion at a position corresponding to said elastic member, each of said elastic members comprising:

the bearing part is abutted against the protruding part;

10. The drive of claim 4, further comprising:

11. The utility model provides a module of making a video recording which characterized in that includes:

a drive arrangement according to any one of claims 1 to 10; and

12. An electronic device, comprising:

a body; and

the camera module of claim 11, wherein the camera module is disposed on the body.