CN113329159B

CN113329159B - Camera module and electronic equipment

Info

Publication number: CN113329159B
Application number: CN202110640177.8A
Authority: CN
Inventors: 代廷均; 张云波
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2021-06-08
Filing date: 2021-06-08
Publication date: 2023-04-07
Anticipated expiration: 2041-06-08
Also published as: CN113329159A

Abstract

The application discloses camera module and electronic equipment belongs to wireless communication technical field. The camera module comprises a lens bracket, a liquid lens, an annular assembly and a driving assembly; the lens bracket is provided with an accommodating cavity, and the liquid lens, the driving assembly and the annular assembly are accommodated in the accommodating cavity; the annular assembly is movably connected with the lens bracket and arranged around the liquid lens on a plane vertical to the light transmission direction of the liquid lens; the drive assembly is connected with the lens support, and the drive assembly is used for providing first drive power and second drive power for annular subassembly, wherein: under the condition of receiving a first driving force, the surrounding area of the annular assembly contracts to extrude the liquid lens to extend in the light transmission direction and generate curvature change; under the condition of receiving the second driving force, the annular assembly translates in a plane vertical to the light transmission direction of the liquid lens so as to drive the optical center position of the liquid lens to change.

Description

Camera module and electronic equipment

Technical Field

The application belongs to the technical field of wireless communication, and particularly relates to a camera module and electronic equipment.

Background

With the rapid development of wireless communication technology, electronic devices such as mobile phones and tablet computers are becoming more and more popular and becoming indispensable tools in people's daily life. The camera module is used as an important part of the electronic equipment, so that the electronic equipment can shoot photos or videos, and a user can record the drips generated by the user.

At present, in order to implement a zoom function and an anti-shake function of a camera module of an electronic device, a zoom driving component (such as a zoom motor) and an anti-shake component (such as a micro-pan-tilt) are generally respectively disposed in the camera module, that is, a lens is driven by the zoom driving component to move so as to adjust a focal length, and a shake amount of the lens is corrected by the anti-shake component. However, the zoom driving assembly and the anti-shake assembly generally occupy a large installation space, and the size of the camera module is large due to the arrangement of the zoom driving assembly and the anti-shake assembly.

Disclosure of Invention

The embodiment of the application aims to provide a camera module and electronic equipment, and the problem that the size of the existing camera module is large can be solved.

In a first aspect, an embodiment of the present application provides a camera module, which includes a lens holder, a liquid lens, an annular assembly, and a driving assembly;

the lens bracket is provided with an accommodating cavity, and the liquid lens, the driving assembly and the annular assembly are accommodated in the accommodating cavity;

the annular assembly is movably connected with the lens bracket and arranged around the liquid lens on a plane vertical to the light transmission direction of the liquid lens;

the drive assembly is connected with the lens support, and the drive assembly is used for providing a first drive force and a second drive force for the annular assembly, wherein:

under the condition of the first driving force, the surrounding area of the annular assembly contracts to press the liquid lens to stretch in the light ray transmission direction and generate curvature change;

under the condition of the second driving force, the annular assembly translates in a plane perpendicular to the light transmission direction of the liquid lens so as to drive the optical center position of the liquid lens to change.

In a second aspect, an embodiment of the present application provides an electronic device, including the camera module in the first aspect.

In the embodiment of the application, the driving assembly drives the annular assembly by the first driving force and the second driving force respectively, the annular assembly contracts in the surrounding area under the action of the first driving force, and the liquid lens is extruded and extends in the light ray transmission direction at the moment so as to change the curvature of the liquid lens and realize the adjustment of the focal length of the camera module to achieve the zooming function; and the annular component is translated in a plane vertical to the light transmission direction of the liquid lens under the action of a second driving force so as to drive the optical center of the liquid lens to change, so that the shake amount of the lens can be corrected when the camera shakes, and the anti-shake function is achieved. So, through the cooperation of drive assembly with annular assembly, can realize the zoom function and the anti-shake function of camera module to can reduce the occupation to the installation controlling part, promote the installation space utilization of camera module, and then effectively reduce the size of camera module.

Drawings

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

fig. 2 is a schematic structural diagram of a liquid lens provided in an embodiment of the present application;

fig. 3 is a schematic structural diagram of a lens holder provided in an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a ring assembly provided by an embodiment of the present application;

fig. 5 is one of the structural schematic diagrams of the cooperation of some components of the camera module according to the embodiment of the present application;

FIG. 6 is a second schematic structural view of a ring assembly according to an embodiment of the present disclosure;

FIG. 7 is an enlarged schematic view of region H of FIG. 4;

fig. 8 is a second schematic structural diagram illustrating a partial assembly of a camera module according to an embodiment of the present disclosure;

FIG. 9 is a schematic diagram of a ring assembly provided by an embodiment of the present application for performing an activity in a focusing function;

FIG. 10 is a schematic diagram of a focusing function of a ring assembly provided in an embodiment of the present application;

FIG. 11 is a force-bearing diagram of the ring assembly for implementing the anti-shake function according to the embodiment of the present disclosure;

FIG. 12 is a schematic diagram of a ring assembly for implementing an anti-shake function according to an embodiment of the present disclosure;

fig. 13 is a second force-bearing schematic diagram of the ring assembly according to the embodiment of the present invention for implementing the anti-shake function;

FIG. 14 is a third force-bearing schematic diagram of the ring assembly for implementing the anti-shake function according to the embodiment of the present application;

fig. 15 is a circuit configuration schematic of a driving circuit provided in an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present disclosure.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application are capable of operation in sequences other than those illustrated or described herein, and that the terms "first," "second," etc. are generally used in a generic sense and do not limit the number of terms, e.g., a first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

The following describes the camera module provided in the embodiments of the present application in detail through specific embodiments and application scenarios thereof with reference to the accompanying drawings.

Referring to fig. 1, which is an exploded schematic view of a camera module according to an embodiment of the present disclosure, as shown in fig. 1, the camera module includes a lens holder 10, a liquid lens 20, an annular assembly 30, and a driving assembly 40;

the lens holder 10 is provided with a containing cavity 100, and the liquid lens 20, the driving assembly 40 and the annular assembly 30 are all contained in the containing cavity 100;

the annular component 30 is movably connected with the lens holder 10, and on a plane perpendicular to the light transmission direction of the liquid lens 20, the annular component 30 is arranged around the liquid lens 20;

the driving assembly 40 is connected to the lens holder 10, and the driving assembly 40 is configured to provide a first driving force and a second driving force to the ring assembly 20, wherein:

under the condition of the first driving force, the surrounding area of the annular assembly 30 contracts to press the liquid lens 20 to extend in the light ray transmission direction and generate curvature change;

under the condition of the second driving force, the ring assembly 30 translates in a plane perpendicular to the light transmission direction of the liquid lens 20, so as to change the optical center position of the liquid lens 20.

Based on this, the driving assembly 40 drives the annular assembly 30 by the first driving force and the second driving force respectively, and the annular assembly 30 contracts around the area under the first driving force, at this time, the liquid lens 20 is squeezed and extends in the light transmission direction, so that the curvature of the liquid lens 20 changes, and the adjustment of the focal length of the camera module is realized to achieve the zoom function; and, the ring assembly 30 is translated in a plane perpendicular to the light transmission direction of the liquid lens 20 under the second driving force, so as to drive the optical center of the liquid lens 20 to change, thereby realizing the function of correcting the shake amount of the lens when the camera shakes, so as to achieve the anti-shake function. So, through drive assembly 40 and annular component 30's cooperation, can realize the zoom function and the anti-shake function of camera module to can reduce the occupation to the installation controlling part, promote the installation space utilization of camera module, and then effectively reduce the size of camera module.

It should be noted that, as shown in fig. 1, the camera module may further include a housing 40, the lens holder 10 is disposed in the housing 50, and the housing 50 is used to protect other components of the camera module; a protective glass 60 for preventing dust, foreign substances, etc. from entering the liquid lens 20 may be further included; a circuit module 70 for setting a driving circuit of the camera module, etc. may be further included.

In the embodiment of the present invention, the lens holder 10 is provided with a receiving cavity 100, and the liquid lens 20, the driving assembly 40 and the ring assembly 30 are all disposed in the receiving cavity 100.

The lens holder 100 may be any structure for supporting the liquid lens 20 and providing the driving assembly 40 and the ring assembly 30, and the shape and size of the accommodating cavity 100 provided in the lens holder 100 may be set according to actual needs, which is not limited herein.

In the embodiment of the present invention, the liquid lens 20 is disposed in the accommodating cavity 100, and the liquid lens 20 is used for transmitting external light to an image sensor of the camera module.

The liquid lens 20 is a flexible deformable lens, and specifically, the liquid lens 20 is made of a flexible material that can be changed in a telescopic manner, and has a light-permeable liquid inside, and when the liquid lens 20 is changed in a telescopic manner in a light transmission direction, a focal length of the camera module is changed.

In addition, the liquid lens 20 may be any shape that can transmit light to the image sensor, for example, the liquid lens 20 may be a cylindrical lens, and the like.

Alternatively, as shown in fig. 2, the liquid lens 20 may include a first lens body 21 and a second lens body 22, the first lens body 21 may be fixedly disposed in the accommodating cavity 100, the second lens body 22 is fixedly connected to the first lens body 21, and a diameter of the second lens body 22 is smaller than that of the first lens body 21, wherein the first lens body 21 is used for fixing the liquid lens 20 in the lens holder and providing a moving space for the second lens body 22, and the second lens body 22 is used for realizing focusing, anti-shake and imaging through deformation.

At this time, in order to enable the lens holder 10 to support the liquid lens 20, the first lens body 21 may be clamped in the lens holder 10, for example, a buckle and a bayonet which are matched with each other may be respectively arranged on an inner wall of the accommodating cavity 100 of the lens holder 10 and the first lens body 21, and the first lens body 21 is fixed in the lens holder by the matching of the buckle and the bayonet; alternatively, as shown in fig. 3, the lens holder 10 may include a first supporting layer 11, the first supporting layer 11 extends in the accommodating cavity 100 on a plane parallel to the plane perpendicular to the light transmission direction of the liquid lens, and the first supporting layer 11 supports the liquid lens 20, that is, the first supporting layer 11 supports the first lens 21, and the second lens 11 penetrates through the first supporting layer 11, so as to facilitate the mounting and dismounting of the liquid lens 20.

In the embodiment of the present invention, the annular element 30 is disposed in the accommodating cavity 100 and movably connected to the lens holder 10, and the annular element 30 is driven by the first driving force provided by the driving element 40 to contract in a surrounding area and extrude the liquid lens 20 to extend in a light transmission direction, so that the curvature of the liquid lens 20 changes; and, under the driving of the second driving force provided by the driving component 40, the liquid lens is translated in the plane perpendicular to the light transmission direction of the liquid lens, so as to drive the optical center of the liquid lens 20 to change.

The light transmission direction of the liquid lens 20 can be understood as the transmission direction of the light passing through the optical center of the liquid lens 20, and the direction of the light entering the liquid lens 20 after passing through the liquid lens 20 is the same as the direction of the light exiting the liquid lens 20. For example, as shown in fig. 2, the light propagation direction of the liquid lens 20 may be the propagation direction of the light 200, and the propagation direction of the light 200 may be parallel to the Z-axis direction of the spatial coordinate system.

For example, the ring assembly may be disposed around the second lens body 22 shown in fig. 2, the ring assembly 30 may be driven by the driving assembly 40 to contract in surrounding area, at this time, the inward pressing force applied by the ring assembly 30 to the second lens body 22 increases, so that the deformation of the second lens body 22 increases, and the second lens body 22 extends in the light transmission direction (i.e., in a direction parallel to the Z axis), so as to implement the zoom function; the ring assembly 30 can also be driven by the driving assembly 40 to move in a plane perpendicular to the light transmission direction (i.e. a plane parallel to the plane of the X axis and the Y axis), and at this time, the ring assembly 30 applies a pressing force to the second lens body 22, so that the whole second lens body 22 is torn to move in the plane perpendicular to the light transmission direction, and the optical center position of the second lens body 22 is changed, so that the anti-shake function can be realized when shake occurs.

In addition, the ring assembly 30 may be any ring structure capable of respectively contracting in surrounding area and translating in a plane perpendicular to the light transmission direction, and the shape and size thereof may be set according to actual needs.

In one embodiment, as shown in fig. 4, the ring assembly may include at least two ring portions 31, the at least two ring portions 31 are spaced around the liquid lens 20 on a plane perpendicular to a light transmission direction of the liquid lens 20, and the at least two ring portions 31 are movably connected to the lens holder 10 respectively.

Based on this, each annular portion 31 can move independently in the lens holder 10, and provides a pressing force to the liquid lens 20 during the movement, and by the cooperation of at least two annular portions 31, the liquid lens 20 can be stretched and moved in a plane perpendicular to the light transmission direction of the liquid lens.

In the embodiment of the present application, the number of the annular portions 31 may be set according to actual needs, and may be two, three, or more, and is not limited herein.

Specifically, the at least two annular portions 31 include N pairs of annular portions, each pair of annular portions includes two annular portions 31, the two annular portions 31 are symmetrically disposed around the liquid lens 20, and N is a positive integer.

Based on this, by providing the pair of annular portions formed by the two symmetrically disposed annular portions 31, the stress balance performance of the liquid lens 20 can be further improved, and the focusing accuracy and the anti-shake accuracy are further improved.

The number of the pairs of annular portions may also be set according to actual needs, specifically, N is equal to 2, that is, as shown in fig. 4, the annular assembly 30 is composed of 4 annular portions 31 arranged two by two symmetrically, so that not only focusing accuracy and anti-shake accuracy can be ensured, but also the structure of the annular assembly is simple.

In addition, the at least two annular portions 31 are disposed at intervals around the liquid lens 20, and the intervals between two of the at least two annular portions 31 may be different; or, the interval between any two of the at least two annular portions 31 may be the same, so that the pressing force applied to the liquid lens may be more balanced, and the focusing effect and the anti-shake effect may be improved.

It should be noted that, the ring assembly 30 is movably connected to the lens holder 10, and may be connected to the lens holder 10 through a sliding rail. For example, each of the ring portions 31 is movably connected to the lens holder 10, a slide rail corresponding to each of the ring portions 31 may be disposed in the lens holder 10, and the ring portions 31 are disposed on the slide rail and can move along the slide rail.

Alternatively, as shown in fig. 3 and 5, the lens holder 10 may include the first support layer 11 and the second support layer 12, where the first support layer 11 and the second support layer 12 are perpendicular to the light transmission direction of the liquid lens 20, and the first support layer 11 and the second support layer 12 are spaced apart from each other and extend into the accommodating cavity 100;

the first support layer 11 supports the liquid lens 20, and the ring assembly 30 is movably disposed in the sliding groove 13 formed by the second support layer 12 and the first support layer 11.

Based on this, the sliding grooves 13 are formed by the first supporting layer 11 and the second supporting layer 12 being arranged at intervals, so that not only the liquid lens 20 can be supported by the structure formed by the first supporting layer 11 and the second supporting layer 12, but also the ring assembly 30 can be movably arranged, and the structure of the lens holder 10 is simpler.

Further, in order to reduce the weight of the lens holder 10, the above-mentioned partial groove body of the sliding groove 13 may be hollowed, that is, as shown in fig. 3, partial groove bodies of the first supporting layer 11 and the second supporting layer 12 are respectively hollowed, so as to form a hollowed area 130 at the sliding groove 13.

Wherein, in the case that the ring assembly 30 includes a plurality of ring portions 31, the sliding groove 13 may be a communicating sliding groove whole; alternatively, the sliding groove 13 may include a plurality of sliding sub-grooves corresponding to the plurality of annular portions 31, and each annular portion 31 is disposed in the corresponding sliding sub-groove, so that each annular portion 31 can move in the corresponding sliding sub-groove.

It should be noted that each of the plurality of sliding sub-grooves is independently arranged, that is, any two sliding sub-grooves are not communicated with each other, and specifically, a partition may be arranged between any two sliding sub-grooves. Of course, part of the layers of the first supporting layer 11 and the second supporting layer 12 corresponding to each sliding sub-groove may be hollowed out, so as to further reduce the weight of the lens holder 10.

In another embodiment, as shown in fig. 6, the ring assembly 30 may be a ring-shaped whole body 33 provided with an opening 32, and the ring-shaped whole body 33 is movably connected with the lens holder 10, thereby making the structure of the ring assembly 30 simpler.

Because the annular whole body 33 is provided with the opening 32, when the annular whole body 33 is subjected to a larger driving force at a position close to the opening 32, the opening 32 becomes smaller, and the surrounding area of the annular whole body 33 is reduced, so that the liquid lens 20 is squeezed and the liquid lens 20 is extended; when the ring-shaped whole body 33 is subjected to a large driving force in any direction of the plane perpendicular to the light transmission direction of the liquid lens, the ring-shaped whole body 33 can move in the plane perpendicular to the light transmission direction of the liquid lens, so that the liquid lens 20 is squeezed to move the optical center position of the liquid lens 20.

The annular member 33 is movably connected to the lens holder 10, and the sliding groove 13 may be a communicating sliding groove member, and the annular member 33 is disposed in the sliding groove member and is driven by the driving unit 40 to move in the sliding groove member.

It should be noted that the annular body 33 may have a telescopic structure, and specifically, the annular body 33 may be a telescopic spring made of memory metal.

In the embodiment of the present invention, the side of the annular component 33 close to the liquid lens 20 may be parallel to the side of the liquid lens 20 close to the annular component 33.

Alternatively, as shown in fig. 7, the ring assembly 30 is provided with an inclined surface 34, and the inclined surface 34 is inclined toward the liquid lens 20.

Based on this, through setting up inclined plane 34, can make annular assembly 30 extrude liquid lens 20 more easily and take place deformation, and then promote the focusing ability and the anti-shake ability of camera module.

The position of the inclined plane 34 of the annular component may be near one end of the liquid lens 20 where the liquid lens 20 extends, and in a case that the liquid lens 20 does not extend, the non-inclined side of the annular component may be opposite to the side of the liquid lens 20 where the liquid lens 20 may extend, so that the liquid lens 20 may extend along the inclined plane 34. For example, in the case where the liquid lens 20 is not extended, the non-inclined side surface of the ring assembly 20 covers the cylindrical surface of the second lens body 22.

It should be noted that the ring assembly 30 can also be driven by the driving assembly 40 to perform a reverse motion, so as to contract the liquid lens 20 that is extruded to be elongated and return the optical center position to the position before the movement, which is not described herein again.

In this embodiment, the driving assembly 40 is disposed in the accommodating chamber 100 and connected to the lens holder 10, and the driving assembly 40 is configured to provide a first driving force and a second driving force to the annular assembly 30 respectively, so as to drive the annular assembly 30 to move in different manners.

The driving assembly 40 may be any assembly capable of providing the first driving force and the second driving force to the ring assembly 30.

For example, the driving assembly 40 may be a connecting member and a motor connected to the connecting member, the connecting member is connected to the ring assembly 30, and when the motor rotates in the forward direction, a first driving force is provided to the ring assembly 30 through the connecting member, so that the surrounding area of the ring assembly 30 is contracted; and when the motor rotates reversely, a second driving force is provided to the annular assembly 30 through the connecting piece so as to drive the annular assembly 30 to translate, and the like.

Specifically, the driving assembly 40 includes at least two driving members respectively connected to the lens holder 10 and spaced around the ring assembly 30 on a plane perpendicular to the light transmission direction of the liquid lens 20;

wherein, in a plane perpendicular to the light transmission direction of the liquid lens 20, different driving members are used to apply driving forces to the annular assembly 30 in different directions.

Based on this, through at least two driving pieces arranged around the annular assembly 30 at intervals, the annular assembly can be applied with driving forces in different directions, so that the change of the surrounding area and the position movement of the annular assembly are realized, and the structure of the driving assembly is simple.

As can be seen from the above, the annular assembly may include at least two annular portions 31, the at least two annular portions 31 are disposed around the liquid lens 20 at intervals, and each annular portion 31 is movably connected to the lens holder 10; at this time, the at least two driving members correspond to the at least two annular portions 31 one to one, and each driving member is used for applying a driving force to the annular portion 31 corresponding to the driving member, so that each driving member can independently drive the annular portion 31 corresponding to the driving member to move, and the movement of the annular assembly is more flexible.

In addition, the annular assembly may also be an annular whole 33 provided with an opening, and the annular whole 33 is movably connected with the lens holder 10; at this moment, the at least two driving pieces can be arranged around the annular whole body 33 at intervals, so that the deformation and the movement of the annular whole body 33 can be realized through the at least two driving pieces, and the arrangement mode of the camera module is increased.

It should be noted that each of the at least two driving members may be any member capable of applying a driving force to the annular assembly. In particular, each of the at least two driving members may be a motor connected to the annular assembly.

Alternatively, as shown in fig. 4, 5, 6 and 8, each driving member may include an electromagnetic driver 41 and a magnet 42, wherein the magnet 42 is disposed opposite to and spaced apart from the electromagnetic driver 41;

the magnets 35 of the at least two driving members are disposed around the annular assembly 30, and each of the magnets 35 is fixedly connected to one side of the annular assembly 30 far away from the liquid lens 20.

Based on this, through changing the magnetic force between electromagnetic drive 41 and the magnetite 42, realize that the magnetite drives the activity of annular component 30 to can reduce the connection between the different parts of camera module, make the assembly of camera module easily realize.

It should be noted that fig. 4, fig. 5, fig. 6 and fig. 8 provide two matching manners of the ring assembly 30 and the driving assembly 40, and in order to implement the zoom function and the anti-shake function for the camera module, the two manners are described in detail herein, and are specifically as follows:

in a first mode, as shown in fig. 4, 5 and 8, the annular assembly 30 comprises at least two annular portions 31; the driving assembly 40 includes two electromagnetic drivers 41 and at least two magnets 42 corresponding to the at least two electromagnetic drivers 41, the at least two magnets 42 are connected to the at least two annular portions 31 in a one-to-one correspondence, and each electromagnetic driver 41 is disposed at an interval from the corresponding magnet 42.

At this time, the process of implementing the focusing function is as follows:

in the natural state, no current is applied to the driving assembly 40, the ring assembly is in the telephoto state, the curvature of the lens is minimum, and the camera module is in the state of the farthest focal length.

When the camera module starts a focusing function, a current is applied to the at least two electromagnetic drivers 41, the current generates a magnetic field, the magnetic field acts on the magnets 42 corresponding to the electromagnetic drivers 41, the magnets 42 generate inward pressure to press the annular portions 31 connected with the magnets 42, each annular portion 31 on the annular assembly 30 contracts inward, and the surrounding area of the annular assembly 30 contracts, and the change is as shown in fig. 9 (the outer ring 91 represents the annular assembly before contraction, and the inner ring 92 represents the annular assembly after contraction).

The contraction of the ring assembly 30 compresses the liquid lens 20, changing the curvature of the liquid lens 20 and thus the focal length of the liquid lens 20. The liquid lens 20 is shown in fig. 10. Fig. 10 (a) shows a normal farthest focal length state, when the camera module starts focusing, the magnet 42 receives a magnetic field to extend the liquid lens 20 and change the curvature, and the focal length is shortened, as shown in fig. 10 (b). The larger the applied current is, the higher the contraction degree of the annular assembly 30 is, and the more the curvature of the lens is increased, the shorter the focal length of the lens becomes, thereby realizing the focusing function.

In addition, the process of implementing the anti-shake function is as follows:

the liquid lens 20 adopts the at least two electromagnetic drivers 41 to drive the annular assembly, and a schematic diagram thereof is shown in fig. 11. When a current passes through the electromagnetic actuator 41, the magnetic field generated interacts with the magnet 42 to force the ring assembly 30 to move, so that the optical center of the liquid lens 20 shifts to achieve the anti-shake purpose, as shown in fig. 12, fig. 12 (a) is an optical schematic diagram of the liquid lens 20 before shifting, and fig. 12 (b) is an optical schematic diagram of the liquid lens 20 after shifting.

Specifically, during shooting, as shown in fig. 13, if the camera module shakes clockwise in the Y-axis direction, the A, D electromagnetic driver 41 increases the driving current, and the corresponding magnets a and d generate a greater pressure than the magnets b and c. According to the vector resultant direction of the force, the annular assembly 30 can move forward along the X axis, and meanwhile, the optical center of the liquid lens is changed to move forward along the X axis, so that anti-shake compensation is realized;

as shown in fig. 14, when the camera module shakes counterclockwise in the Y-axis direction, the B, C electromagnetic driver 41 increases the driving current, the pressure generated by the corresponding magnets b and c is greater than the pressure generated by the magnets a and d, the ring assembly 30 moves in the negative direction along the X-axis, and the optical center of the liquid lens 20 also moves in the negative direction along the X-axis, so as to implement the anti-shake compensation.

When the object has X-axis shake, the compensation method is similar. Therefore, based on the above shake compensation principle, it is possible to realize anti-shake of the liquid lens 20 in any one direction of the XY plane.

In the second embodiment, as shown in fig. 6, the ring assembly 30 is a ring-shaped whole body 33 provided with the opening 32, and at least two magnets 42 of the driving assembly 40 are disposed around the ring-shaped whole body 33 and connected to the ring-shaped whole body 33.

In this manner, instead of the annular body, a retractable spring (i.e. the annular body 33) may be used, which is made of a memory metal. Magnets 42 are fitted around the ring-shaped whole body 33, and the ring-shaped whole body 33 can be moved in the XY plane by the magnetic force acting on the four magnets 42 a to d. The ring-shaped member 33 has a small opening 32, and the diameter of the ring-shaped member 33 changes when the magnets b and d are simultaneously applied. Meanwhile, the annular body 33 has a protruding fan structure around it for integral structural connection.

At this time, the force is applied to the annular whole body 33 by the magnets b and d, and the annular whole body 33 is deformed to press the lens, so that the curvature is changed, thereby realizing focusing. The focusing principle is similar to the first mode, and can be seen in fig. 12.

In addition, the liquid lens 20 adopts four electromagnetic drivers 41 to push the annular whole body 33. When current passes through the annular whole body 33, the generated magnetic field interacts with the magnet 42 to force the annular whole body 33 to move, so as to drive the liquid lens 20 to move, thereby achieving the anti-shake purpose. The principle of the anti-shake is similar to that in the first mode, and can be seen in fig. 14.

In addition, in the case that the annular assembly 30 is an annular whole body 33, the magnets 42 of the two driving members may be arranged at intervals around the annular whole body 33, and the intervals between the magnets 42 of any two different driving members may be different; alternatively, in the case where the ring assembly 30 includes the ring-shaped body 33 provided with the openings 32, the magnets 42 of the at least two driving members are disposed around the ring-shaped body 33 at equal intervals, thereby improving the force balance of the ring-shaped body 33.

As shown in fig. 15, the driving circuit of the camera module includes a System On Chip (SOC), a Micro Controller Unit (MCU), a gyroscope (Gyro), a laser sensor, a full bridge circuit, an electromagnetic driver 41, and a hall device.

The laser sensor transmits focusing information to the SOC, the SOC outputs a focusing instruction to the MCU, and meanwhile, the Gyro transmits shaking information to the MCU. The MCU converts the focusing information and the shaking information into current information, transmits the current information to the full bridge circuit, and outputs a current for driving the electromagnetic driver 41. According to the magnitude of the current, the electromagnetic driver 41 generates a corresponding magnetic field to change the position of the focusing ring. The hall device is used for detecting the distance between the electromagnetic driver 41 and the magnet 42 to determine the position of the lens, thereby completing the closed-loop control of the liquid lens.

Based on above-mentioned camera module, this application embodiment still provides an electronic equipment, electronic equipment includes above-mentioned camera module.

Since the body structure of the electronic device is well known to those skilled in the art, and the specific structure of the camera module is described in detail in the above embodiments, detailed descriptions of the specific structure of the electronic device are omitted here.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A camera module is characterized by comprising a lens bracket, a liquid lens, an annular assembly and a driving assembly;

the annular assembly is movably connected with the lens bracket and arranged around the liquid lens on a plane vertical to the light transmission direction of the liquid lens, wherein the annular assembly can shrink in surrounding area and translate in the plane vertical to the light transmission direction;

2. The camera module according to claim 1, wherein the ring assembly comprises at least two ring portions, the at least two ring portions are spaced around the liquid lens on a plane perpendicular to a light transmission direction of the liquid lens, and the at least two ring portions are movably connected to the lens holder respectively.

3. The camera module of claim 2, wherein the at least two rings comprise N pairs of rings, each pair of rings comprising two rings, and the two rings are symmetrically disposed around the liquid lens, wherein N is a positive integer.

4. The camera module according to claim 1, wherein the annular member is an annular member having an opening, and the annular member is movably connected to the lens holder.

5. The camera module according to claim 2 or 3, wherein the driving assembly comprises at least two driving members, the at least two driving members are respectively connected to the lens holder, and are spaced around the annular assembly on a plane perpendicular to a light transmission direction of the liquid lens;

and in a plane perpendicular to the light transmission direction of the liquid lens, different driving pieces are used for applying driving force to the annular assembly in different directions.

6. The camera module of claim 5, wherein each of the driving members includes an electromagnetic driver and a magnet, the magnet and the electromagnetic driver being disposed opposite and spaced apart from each other;

the magnetite of two at least driving pieces encircles the annular assembly interval sets up, and each magnetite fixed connection in the annular assembly is kept away from one side of liquid camera lens.

7. The camera module of claim 6, wherein the at least two magnets are coupled to the at least two ring portions in a one-to-one correspondence when the ring assembly includes the at least two ring portions.

8. The camera module of claim 6, wherein, in the case where the annular assembly comprises an annular unitary body provided with openings, the magnets of the at least two driving members are equally spaced around the annular unitary body.

9. The camera module of claim 1, wherein the annular member is provided with an inclined surface that is inclined toward a direction close to the liquid lens.

10. The camera module according to claim 1, wherein the lens holder includes a first supporting layer and a second supporting layer perpendicular to the light transmission direction, the first supporting layer and the second supporting layer are disposed at an interval, and the first supporting layer and the second supporting layer extend toward the accommodating cavity respectively;

the first supporting layer supports the liquid lens, and the annular assembly is movably arranged in a sliding groove formed by the second supporting layer and the first supporting layer.

11. An electronic device, characterized in that the electronic device comprises a camera module according to any one of claims 1 to 10.