CN219285483U - Lens driving device - Google Patents

Abstract

The utility model belongs to the technical field of optical image equipment, and particularly relates to a lens driving device. A lens driving device comprises a shell, a base, a driving component and a carrier, wherein a hollow cavity is arranged between the shell and the base, the driving component is arranged in the hollow cavity, and the driving component comprises an OIS coil group, a magnet group and an AF coil; the OIS coil group is arranged on the base, and an AF coil is arranged on the outer side of the carrier; the lens driving apparatus further includes: the frame is arranged on the base and can do X-axis and Y-axis movement on the base, a magnet group is fixed on the frame, a carrier is sleeved in the frame, and the carrier can do Z-axis movement on the inner side of the frame; and the upper reed is positioned above the base, the frame and the carrier and is respectively connected with the base, the frame and the carrier. The utility model realizes better triaxial moving operation of the lens through the compact design of the shell, the base and the driving component, so that the axial thickness of the lens driving device is smaller, and the lens driving device is suitable for the light and thin design of electronic products.

Description

Lens driving device

Technical Field

The utility model belongs to the technical field of optical image equipment, and particularly relates to a lens driving device.

Background

With the development of technology, many electronic devices (such as smart phones or digital cameras) have photographing or video recording functions. The use of these electronic devices is becoming more and more popular and is evolving towards a convenient and light-weight design that provides more options for the user.

Some electronic devices with photographing or video recording function are provided with a lens driving device to drive an Optical component such as a lens to move, so as to achieve the functions of auto focus (auto focus) and Optical vibration prevention (Optical ImageStabilization, OIS). The light can be imaged through the optical assembly onto the photosensitive assembly.

The conventional lens driving device generally includes an OIS coil group for preventing lens shake, a magnet group, an AF coil and a carrier for mounting a lens, but there is generally a complex design of the lens driving device, particularly a matching design of the coil group and the magnet group, which is generally in a stacked state in an axial direction, so that the overall assembly is complex, and the thickness in the axial direction is thicker, which affects the overall thickness of an electronic product and is unfavorable for the light and thin design of the electronic product.

In addition, the lens driving device generally can only adopt an open-loop driving mode, and since the open-loop driving cannot sense the actual position, there is a risk that the control effect is deteriorated when the environmental and structural characteristics are changed. Therefore, how to realize the closed-loop driving is a key to the technology landing of the lens driving device.

Disclosure of Invention

The present utility model is directed to the above-mentioned problems, and an object of the present utility model is to provide a lens driving device.

The lens driving device comprises a shell, a base, a driving component and a carrier, wherein a hollow cavity is arranged between the shell and the base, the driving component is arranged in the hollow cavity, and the driving component comprises an OIS coil group, a magnet group and an AF coil;

the OIS coil group is arranged on the base, and the AF coil is arranged on the outer side of the carrier;

the lens driving apparatus further includes:

the frame is arranged on the base and can do X-axis and Y-axis movement on the base, a magnet group is fixed on the frame, the carrier is sleeved in the frame, and the carrier can do Z-axis movement on the inner side of the frame.

The upper reed is positioned above the base, the frame and the carrier and is respectively connected with the base, the frame and the carrier;

the four end angle positions of the base are provided with supporting bulges, a built-in circuit is arranged in the supporting bulges, the top ends of the supporting bulges are connected with the top ends of the frames through upper reeds, and the built-in circuit is connected with the AF coil through the upper reeds.

According to the utility model, through the compact design, under the action of the OIS coil group and the magnet group, the frame, the magnet group and the carrier can move in the X-axis and Y-axis directions in the hollow cavity, and under the action of the AF coil and the magnet group, the carrier can move in the Z-axis direction relative to the frame, and as the lens is arranged in the carrier, the triaxial moving operation of the lens is realized. And because the structural design of the upper reed makes it connect base, frame and carrier at the same time, under the elastic action of the upper reed, when the frame moves relative to X-axis, Y-axis or the carrier moves relative to Z-axis, the upper reed can play the auxiliary reset effect.

The four end angle positions of the base are provided with the supporting protrusions of the built-in circuit, all pin leads can be led out from the base, and a connection relationship is established between the upper reed and other modules or devices which are not arranged on the base, so that the overall layout of the lens driving device is reasonable and concise.

The lens driving apparatus further includes:

and a lower reed positioned between the bottom end of the frame and the bottom end of the carrier and respectively connected with the frame and the carrier. The lower reed can play an auxiliary resetting role after the carrier moves in the Z axis relative to the frame.

The shell and the base are buckled and connected to form the hollow cavity.

The inner side of the bottom end of the frame is provided with a magnet installation groove, and the magnets in the magnet group are fixed in the magnet installation groove.

The outer side surface of the magnet is provided with a conductive coating so as to achieve a better conductive effect.

The base is provided with a plurality of base ball grooves, the frame bottom is provided with corresponding frame ball grooves, one frame ball groove sets up corresponding one base ball groove top, frame ball groove with correspond be provided with the ball in the recess intracavity that forms between the base ball groove. After the design, the friction force between the frame and the base can be reduced when the frame moves along the X axis and the Y axis.

The four end corners of the base are internally buried with built-in adsorption iron sheets. A certain attractive force can be generated between the built-in adsorption iron sheet and the magnet, and the attractive force can enable the frame to be tightly attached to the base, so that the structure of the frame is more compact, meanwhile, the balls can be contacted with the ball grooves of the base and the ball grooves of the frame, and the using effect of the balls is guaranteed.

The frame is provided with a frame built-in metal structure, the frame built-in metal structure is connected with the magnet, and the magnet is connected with the upper reed through the frame built-in metal structure.

The built-in circuit includes a coil circuit including:

a plurality of OIS coil pins which are respectively connected with the OIS coils in the OIS coil group;

and the two AF coil pins respectively extend out of the two supporting bulges and are respectively connected with the AF coil through the upper reed.

The built-in circuit comprises a capacitance circuit, and the capacitance circuit comprises:

the electrode plates are arranged in the base, and one electrode plate is arranged corresponding to one magnet in the magnet group;

a common electrode pin arranged in the base and extending out of one of the supporting protrusions, and connected with the magnet through the upper reed and the built-in metal structure of the frame;

an AF electrode plate disposed on the carrier;

and an AF electrode electrifying pin which is arranged in the base and extends out of one supporting bulge and is connected with the AF electrode plate through the upper reed.

The AF electrode plate is buried in the carrier.

And a part of the upper reed is fixed on the side wall of the carrier after being bent to form the AF electrode plate.

The upper reed consists of four independent upper reed pieces, four upper reed pieces are arranged in a surrounding mode, a certain distance is reserved between every two adjacent upper reed pieces, each upper reed piece is connected with the base, the frame and the carrier respectively, and one upper reed piece is connected with a corresponding supporting bulge.

The OIS coils of the OIS coil sets may be wound on winding legs of the base.

The lens driving apparatus further includes:

the drive FPC board is arranged on the base, is positioned at the bottom ends of the frame and the magnet group, is internally provided with a plurality of electrode plates and OIS coils in the OIS coil group, and one electrode plate is arranged above the corresponding one OIS coil.

The beneficial effects are that: the utility model has the following advantages:

1. through the compact design of shell, base and drive assembly, under the better triaxial removal operation's of realization camera lens prerequisite for the axial thickness of camera lens drive arrangement is less, is applicable to among the frivolous design of electronic product.

2. The structural design of the upper reed can realize the resetting effect when the lens moves along the three axes, and can be used for establishing connection among a built-in circuit, a magnet, an AF coil and a plurality of electrode plates.

3. When the frame moves in the X axis and the Y axis, the friction force between the frame and the base can be reduced through a plurality of balls.

4. The built-in attractive force that can produce between absorption iron sheet and the magnetite for the frame is closely attached on the base, makes camera lens drive arrangement structure compacter, has guaranteed simultaneously that the ball can contact with base ball recess, frame ball recess, has guaranteed the result of use of ball.

5. The built-in circuit is positioned in the base, and all pin leads are led out from the base, so that the overall layout of the lens driving device is reasonable and concise. The coil circuit is used for supplying power to the OIS coil and the AF coil. The capacitive circuit can realize the effect of position sensors of an X axis, a Y axis and a Z axis, and the purpose of a closed-loop lens driving device is realized;

6. because the capacitor circuit is additionally arranged, the OIS coil may influence the capacitor circuit after being electrified, so that the position monitoring accuracy is reduced. Therefore, the structure that the base is directly wound with the OIS coil is replaced by the driving FPC board, and the internal structure of the driving FPC board is improved, so that the driving FPC board can be combined with a capacitor circuit to avoid the problems.

Drawings

FIG. 1 is an exploded view of one embodiment of the present utility model;

FIG. 2 is a further exploded view of FIG. 1;

FIG. 3 is another angular schematic view of FIG. 2;

FIG. 4 is a further exploded view of FIG. 2;

FIG. 5 is an exploded view of the energized structure between the various structures of FIG. 1;

FIG. 6 is a block diagram of the built-in circuit of FIG. 5;

FIG. 7 is a block diagram of the capacitive circuit of FIG. 6;

FIG. 8 is an exploded view of another embodiment of the present utility model;

FIG. 9 is a further exploded view of FIG. 8;

FIG. 10 is a further exploded view of FIG. 9;

fig. 11 is a front view of the driving FPC board of fig. 9;

fig. 12 is an internal layout view of the driving FPC board of fig. 11;

FIG. 13 is a cross-sectional view A-A of FIG. 11;

fig. 14 is a partial enlarged view of fig. 13.

Detailed Description

In order that the manner in which the utility model is practiced, as well as the features and objects and functions thereof, will be readily understood and appreciated, the utility model will be further described in connection with the accompanying drawings.

Example 1:

referring to fig. 1 to 7, the present utility model provides a lens driving apparatus including a housing 1, a base 2, a driving assembly, a carrier 4, a frame 5, an upper reed 6, and a lower reed 7, wherein the lower reed 7 is an optional structure. The drive assembly includes an OIS coil group having a plurality of OIS coils 31, a magnet group having a plurality of magnets 32, and an AF coil 33. A hollow cavity is formed between the shell 1 and the base 2, and the shell 1 and the base 2 are preferably connected through buckling to form the hollow cavity. The drive assembly is arranged in the hollow cavity, and the middle parts of the shell 1, the base 2 and the carrier 4 are axially provided with axially communicated lens through holes for accommodating lenses.

OIS coils 31 are arranged on the base 2, magnets 32 are fixed on the frame 5, the number of OIS coils 31 is the same as that of the magnets 32 and are arranged in one-to-one correspondence, AF coils 33 are arranged on the outer side of the carrier 4, the carrier 4 is sleeved in the frame 5, and the carrier 4 can move in the inner side of the frame 5 relative to the frame 5 in a Z-axis manner. The frame 5 is arranged on the base 2, the frame 5 can move on the base 2 in an X-axis and Y-axis, the upper reed 6 is positioned above the base 2, the frame 5 and the carrier 4, and the upper reed 6 is respectively connected with the base 2, the frame 5 and the carrier 4.

According to the utility model, through the compact design, under the action of the OIS coil 31 and the corresponding magnet 32, the frame 5, the magnet 32 and the carrier 4 can move in the X-axis and Y-axis directions in the hollow cavity, and under the action of the AF coil 33 and the magnet 32, the carrier 4 can move in the Z-axis direction relative to the frame 5, and as the lens is arranged in the carrier 4, the triaxial movement operation of the lens is realized. And because the structural design of the upper reed 6 enables the upper reed 6 to be connected with the base 2, the frame 5 and the carrier 4 at the same time, under the elastic action of the upper reed 6, the upper reed 6 can play an auxiliary resetting effect when the frame 5 moves in the X-axis and Y-axis directions relative to the base 2 or when the carrier 4 moves in the Z-axis directions relative to the frame 5.

Preferably, the lower reed 7 is located between the bottom end of the frame 5 and the bottom end of the carrier 4, and connects the frame 5 and the carrier 4, respectively. The lower reed 7 can play an auxiliary resetting role after the carrier 4 moves in the Z axis relative to the frame 5.

Preferably, referring to fig. 4, the lower reed 7 may include an integrally provided elastic ring and four bent lower chord wires disposed around the elastic ring, one end of each lower chord wire is integrally fixed with the elastic ring, and the other end of each lower chord wire is integrally connected with a lower frame fixing piece, where the lower frame fixing piece is used for being fixed with the bottom end of the frame 5. The four lower chord wires can be uniformly arranged around the elastic piece circular ring at an angle of 90 degrees. A lower carrier fixing piece is integrally arranged on the elastic piece ring between two adjacent lower chord wires, and the lower carrier fixing piece is fixed with the bottom end of the carrier 4.

Preferably, the OIS coils 31 in the OIS coil group are four, and the four OIS coils 31 are arranged along four edges of the base 2. More preferably, the OIS coil 31 may be wound around a winding leg of the base 2.

Preferably, the number of magnets 32 in the magnet group is four, and the four magnets 32 are arranged along four edges of the frame 5.

Preferably, a magnet mounting groove is formed in the inner side of the bottom end of the frame 5, and the magnet 32 is fixed in the magnet mounting groove.

Preferably, the outer side surface of the magnet 32 is provided with a conductive coating to achieve a better conductive effect.

Preferably, the four end angular positions of the base 2 are provided with supporting protrusions 21, built-in circuits are arranged in the supporting protrusions 21, the top ends of the supporting protrusions 21 are connected with the top ends of the frames 5 through upper reeds 6, and the built-in circuits are connected with AF coils 33 through the upper reeds 6.

Preferably, referring to fig. 5, the frame 5 has a frame-built-in metal structure 51, the frame-built-in metal structure 51 is connected to the magnet 32, and the magnet 32 is connected to the upper reed 6 through the frame-built-in metal structure 51. When the number of magnets 32 is four, the frame-built-in metal structure 51 is preferably an octagonal-like structure surrounded by straight edges and oblique edges which are connected in sequence. Each straight edge is connected to a respective one of the magnets 32.

Preferably, referring to fig. 2, a plurality of base ball grooves 22 are provided on the base 2, a corresponding frame ball groove 52 is provided at the bottom end of the frame 5, one frame ball groove 52 is provided above a corresponding one of the base ball grooves 22, and balls 81 are provided in groove cavities formed between the frame ball groove 52 and the corresponding base ball groove 22. After the design, the friction force between the frame 5 and the base 2 can be reduced when the frame 5 moves along the X axis and the Y axis.

Preferably, the base ball grooves 22 are provided at the bottom end sides of the four supporting protrusions 21 of the base 2, i.e., the balls 81 are provided at the four end corners of the base 2.

Preferably, referring to fig. 5, the four end corners of the base 2 are embedded with built-in adsorption iron pieces 82. A certain attractive force is generated between the built-in adsorption iron sheet 82 and the magnet 32, and the attractive force can enable the frame 5 to be tightly attached to the base 2, so that the structure is more compact, meanwhile, the balls 81 can be contacted with the base ball grooves 22 and the frame ball grooves 52, and the using effect of the balls 81 is guaranteed.

Preferably, referring to fig. 5, the built-in circuit includes a coil circuit including a number of OIS coil pins and two AF coil pins.

The number of OIS coil pins may be set according to the OIS coil number. More preferably, when the OIS coils are four, two OIS coils in the X-axis direction share two OIS coil X pins, which are OIS coil x+ pin 311 and OIS coil X-pin 312, respectively. Two OIS coils in the Y-axis direction share two OIS coil Y pins, which are OIS coil y+ pin 313 and OIS coil Y-pin 314, respectively. The layout of the OIS coil x+ pin 311, OIS coil X-pin 312, OIS coil y+ pin 313, OIS coil Y-pin 314 may be arranged according to the actual situation.

The two AF coil pins are AF coil+ pin 331 and AF coil-pin 332, respectively. The two AF coil pins respectively extend out of the two supporting protrusions 21, and when the AF coil pins are specifically arranged, the two AF coil pins can be oppositely arranged in the two diagonal supporting protrusions 21, and the top ends of the AF coil pins extend out of the supporting protrusions 21. The two AF coil pins are connected through the upper reed 6 and the AF coil 33, respectively. Since the AF coil 33 is not provided on the base 2 but on the outside of the carrier 4, the circuit connection relationship between the base 2 and the carrier 4 can be established by the upper reed 6 connected to them, respectively. When the AF coil pin is energized, the energization of the AF coil 33 is achieved via the upper reed 6.

Preferably, referring to fig. 5 to 7, the built-in circuit includes a capacitance circuit including a plurality of electrode pads 91, a common electrode pin 92, an AF electrode pad 93, and an AF electrode energizing pin 94.

A plurality of electrode pieces 91 are provided in the base 2, the number of the electrode pieces is the same as that of the magnets 32, and one electrode piece 91 is provided corresponding to one magnet 32. The electrode plates are preferably four, four electrode plates are surrounded, and the four electrode plates are respectively an X-axis electrode plate 911, an X-axis electrode plate 912, a Y-axis electrode plate 913 and a Y-axis electrode plate 914. The X-axis electrode pad 911 and the X-axis electrode pad 912 are disposed opposite to each other. The Y-axis electrode piece 913 and the Y-axis electrode piece 914 are disposed opposite to each other.

The common electrode pin 92 is disposed in the base 2, the common electrode pin 92 extends out of one supporting protrusion 21, and the common electrode pin 92 is connected to the magnet 32 through the upper reed 6 and the frame-built-in metal structure 51.

The AF electrode sheet 93 is provided on the carrier 4.

An AF electrode energizing pin 94 is provided in the base 2, the AF electrode energizing pin 94 extends out of the other supporting boss 21, and the AF electrode energizing pin 94 is connected with an AF electrode plate 93 through the upper reed 6.

When the built-in circuit is energized, the common electrode pin 92 is energized with a positive current, which flows through the upper reed 6 and the frame built-in metal structure 51 to contact the magnet. The single electrode slice corresponds to a single magnet, the electrode slice is connected with negative current, at the moment, a capacitance structure is formed between the electrode slice and the magnet, after the frame 5 drives the magnet to move along the X axis and the Y axis, the capacitance value of the capacitance can change, the moving position of the frame 5 can be judged according to the change, and the effect of the X axis and the Y axis position sensor is realized.

The top end of the AF electrode plate 93 is communicated with the AF electrode electrifying pin 94 after passing through the upper reed 6, at this time, a capacitance structure is also formed between the AF electrode plate 93 and one magnet, and the longitudinal moving position of the carrier 4 is judged according to the capacitance value, so that the effect of the Z-axis position sensor is realized.

So that the purpose of the closed-loop lens driving device is realized through the capacitor circuit.

Preferably, the supporting projections from which the common electrode pins 92 project and the supporting projections from which the AF electrode energizing pins 94 project are supporting projections at two opposite corners.

Preferably, the supporting protrusions from which the common electrode pin 92 extends, the supporting protrusions from which the AF electrode energizing pin 94 extends, and the two supporting protrusions from which the two AF coil pins extend are four mutually independent supporting protrusions, respectively, so as to avoid mutual interference.

Preferably, the AF electrode plate 93 may be buried in the carrier 4.

Preferably, the AF electrode plate 93 may be formed by bending a part of the upper reed 6 and fixing it to the side wall of the carrier 4.

Preferably, referring to fig. 4, the upper reed 6 is composed of four independent upper reed pieces 61, the four upper reed pieces 61 are surrounded, a certain distance is provided between two adjacent upper reed pieces 61, each upper reed piece 61 is respectively connected with the base 2, the frame 5 and the carrier 4, and one upper reed piece 61 is connected with a corresponding supporting protrusion 21.

The four independent sprung plates 61 are respectively applied to the connection of the common electrode pin 92 and the built-in metal structure 51 of the frame, the connection of the AF electrode energizing pin 94 and the AF electrode plate 93, the connection of the AF coil pin 331 and one end of the AF coil 33, and the connection of the AF coil pin 332 and the other end of the AF coil 33, so that the connection of the modules is mutually independent, and interference is avoided.

Preferably, referring to fig. 5, two opposite upper reed pieces 61 have the same structure, and two adjacent upper reed pieces 61 have different structures. Each sprung portion 61 is preferably integrally formed.

The upper spring supporting piece 61 of one structure is in a strip-like shape and comprises an upper base fixing piece, an upper first chord wire, an upper frame fixing piece, an upper second chord wire and an upper carrier fixing piece, wherein the upper base fixing piece, the upper first chord wire, the upper frame fixing piece, the upper second chord wire and the upper carrier fixing piece are sequentially connected and used for being connected with the supporting protrusions 21.

The upper spring supporting piece 61 of another structure is L-shaped, and comprises an upper base fixing piece, an upper first chord wire, an upper first frame fixing piece, an upper third chord wire, an upper second frame fixing piece, an upper second chord wire and an upper carrier fixing piece, wherein the upper base fixing piece, the upper first chord wire, the upper first frame fixing piece and the upper third chord wire are used for connecting the supporting protrusions 21, the upper second frame fixing piece and the upper carrier fixing piece are used for connecting the frames 5, and the upper carrier fixing piece is used for connecting the carriers 4, and the upper base fixing piece, the upper first chord wire, the upper first frame fixing piece and the upper third chord wire are sequentially connected from the short side to the long side. The upper third chord wire is used for transition of short sides and long sides, and the upper first frame fixing piece and the upper second frame fixing piece are respectively arranged on two adjacent sides of the frame 5.

Example 2:

referring to fig. 8 to 14, in comparison with embodiment 1, the present utility model provides a lens driving device, wherein a driving FPC board 95 is added, the driving FPC board 95 is disposed on the base 2, the driving FPC board 95 is disposed at the bottom ends of the frame 5 and the magnet 32, the driving FPC board 95 is internally provided with a plurality of electrode pads 91 and a plurality of OIS coils 31, and one electrode pad 91 is disposed above a corresponding OIS coil 31.

The OIS coil 31 in embodiment 1 is usually directly wound on the winding post of the base 2, the OIS coil 31 may be located between the electrode plate 91 disposed in the base and the magnet 32 after being energized, and the capacitive structure formed by the OIS coil 31 may be affected after being energized, which may reduce the accuracy of position monitoring. In this embodiment, the structure of directly winding the OIS coil 31 on the base 2 is replaced by using the driving FPC board 95, and the internal structure of the driving FPC board 95 is improved.

Other structures of this embodiment are the same as those of embodiment 1, and will not be described here again.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (10)

1. The lens driving device comprises a shell, a base, a driving component and a carrier, wherein a hollow cavity is arranged between the shell and the base, the driving component is arranged in the hollow cavity, and the driving component comprises an OIS coil group, a magnet group and an AF coil;

the OIS coil assembly is characterized in that the OIS coil assembly is arranged on the base, and the AF coil is arranged on the outer side of the carrier;

the lens driving apparatus further includes:

the frame is arranged on the base and can do X-axis and Y-axis movement on the base, a magnet group is fixed on the frame, the carrier is sleeved in the frame, and the carrier can do Z-axis movement on the inner side of the frame;

the upper reed is positioned above the base, the frame and the carrier and is respectively connected with the base, the frame and the carrier;

the four end angle positions of the base are provided with supporting bulges, a built-in circuit is arranged in the supporting bulges, the top ends of the supporting bulges are connected with the top ends of the frames through upper reeds, and the built-in circuit is connected with the AF coil through the upper reeds.

2. The lens driving apparatus according to claim 1, wherein the lens driving apparatus further comprises:

and a lower reed positioned between the bottom end of the frame and the bottom end of the carrier and respectively connected with the frame and the carrier.

3. The lens driving apparatus of claim 1, wherein a magnet mounting groove is provided inside a bottom end of the frame, and magnets in the magnet group are fixed in the magnet mounting groove.

4. The lens driving apparatus of claim 1, wherein a plurality of base ball grooves are provided on the base, a corresponding frame ball groove is provided at the bottom end of the frame, one of the frame ball grooves is provided above a corresponding one of the base ball grooves, and balls are provided in a groove cavity formed between the frame ball groove and the corresponding base ball groove.

5. The lens driving apparatus according to claim 1 or 4, wherein the four end corners of the chassis are embedded with built-in adsorption iron pieces.

6. The lens driving apparatus according to claim 1, wherein the frame has a frame-built-in metal structure, the frame-built-in metal structure being connected to the magnet, the magnet being connected to the upper reed through the frame-built-in metal structure.

7. The lens driving apparatus as claimed in claim 6, wherein the built-in circuit includes a coil circuit including:

a plurality of OIS coil pins which are respectively connected with the OIS coils in the OIS coil group;

and the two AF coil pins respectively extend out of the two supporting bulges and are respectively connected with the AF coil through the upper reed.

8. A lens driving apparatus according to claim 6 or 7, wherein the built-in circuit includes a capacitance circuit, the capacitance circuit including:

the electrode plates are arranged in the base, and one electrode plate is arranged corresponding to one magnet in the magnet group;

a common electrode pin arranged in the base and extending out of one of the supporting protrusions, and connected with the magnet through the upper reed and the built-in metal structure of the frame;

an AF electrode plate disposed on the carrier;

and an AF electrode electrifying pin which is arranged in the base and extends out of one supporting bulge and is connected with the AF electrode plate through the upper reed.

9. The lens driving apparatus of claim 8, wherein the upper reed is composed of four independent upper reed pieces, four upper reed pieces are surrounded, a certain distance is provided between two adjacent upper reed pieces, each upper reed piece is respectively connected with the base, the frame and the carrier, and one upper reed piece is connected with a corresponding supporting protrusion.

10. The lens driving apparatus of claim 8, wherein OIS coils of the OIS coil group are wound on a winding post of the base;

or alternatively, the first and second heat exchangers may be,

the lens driving apparatus further includes:

the drive FPC board is arranged on the base, is positioned at the bottom ends of the frame and the magnet group, is internally provided with a plurality of electrode plates and OIS coils in the OIS coil group, and one electrode plate is arranged above the corresponding one OIS coil.

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