Lens driving mechanism

Abstract

The utility model discloses a lens drive mechanism, including base, frame, first magnet group, second magnet group, carrier and elastic part. Base sets up first coil group and second coil group. The frame is equipped with the first installation groove, and the first installation groove is equipped with the first protrusion. First magnet group and first coil group cooperate to drive the frame to move along the first direction, and first magnet group includes three first magnets arranged along the radial, and the polarity of one of the two first magnets adjacent to each other is distributed along the optical axis direction, and the other is distributed along the radial, and the polarity of the two first magnets spaced apart and distributed along the optical axis direction is reversely arranged. The top surface of first magnet is equipped with first gap, and first gap and first protrusion are complementary matched. Second magnet group is connected with the frame and cooperates with second coil group to drive the frame to move along the second direction. The carrier is connected with the frame and can move along the optical axis direction, and the carrier is used for installing the lens. Elastic part is elastically connected with the frame and the carrier.

Description

Technical Field

[0001] This utility model relates to the field of optical element driving technology, and in particular to a lens driving mechanism. Background Technology

[0002] With the development of technology, many electronic devices today (such as smartphones) have the function of taking pictures or recording videos. Through the camera module set on the electronic device, users can operate the electronic device to extract all kinds of photos.

[0003] The design of modern electronic devices is constantly trending towards miniaturization, necessitating the continuous reduction in the size and structure of various components in camera modules to achieve this goal. Generally, the drive mechanism in a camera module may include a lens mount to support a lens, and the drive mechanism may have autofocus or optical image stabilization functions. However, while existing drive mechanisms can achieve the aforementioned photographic or video recording functions, they still cannot meet all requirements.

[0004] In some lens drive mechanisms, the carrier needs to have a large motion stroke, and the components inside the lens drive mechanism need to have higher stability. However, existing lens drive mechanisms cannot meet this requirement, so improvements are needed. Summary of the Invention

[0005] The purpose of this invention is to provide a lens driving mechanism to solve the problems of the prior art.

[0006] To solve the above-mentioned technical problems, the present invention provides a lens driving mechanism, comprising:

[0007] A base, wherein a first coil group and a second coil group are provided on the base;

[0008] A frame, which is movably connected to the base and is provided with a first mounting groove, the top wall of which is provided with a first protrusion;

[0009] A first magnet group is located above and cooperates with the first coil group to drive the frame to move in a first direction. The first magnet group includes at least three first magnets arranged radially. The polarity of one of two adjacent first magnets is distributed along the optical axis, and the other is distributed radially. The polarities of two first magnets that are spaced apart and whose polarities are distributed along the optical axis are opposite. At least one of the multiple first magnets has a first notch on its top surface, and the first notch is complementary to the first protrusion.

[0010] The second magnet group is connected to the frame and located above the second coil group, and cooperates with the second coil group to drive the frame to move in the second direction;

[0011] A carrier, which is connected to the frame and is configured to move along the optical axis, is used to mount a lens;

[0012] An elastic element is elastically connected to the frame and the carrier.

[0013] In one embodiment, the first magnet group includes three first magnets arranged radially, wherein the polarities of the two first magnets located on both sides are distributed along the optical axis.

[0014] In one embodiment, the bottom surface of the frame is provided with a second mounting groove, and the top wall of the second mounting groove is provided with a second protrusion;

[0015] The top surface of the second magnet assembly is provided with a second notch that complements and matches the second protrusion.

[0016] In one embodiment, the second magnet group includes at least three second magnets arranged radially, one of two adjacent second magnets having a polarity distributed along the optical axis and the other having a polarity distributed radially, and two second magnets spaced apart and having polarities distributed along the optical axis having opposite polarities; at least one of the plurality of second magnets has a second notch on its top surface.

[0017] In one embodiment, the bottom surface of the frame is provided with a third mounting groove;

[0018] The lens driving mechanism also includes:

[0019] A third magnet assembly, the third magnet assembly being located within the third mounting slot; and

[0020] The third coil group is connected to the carrier and cooperates with the third magnet group to drive the carrier to move along the optical axis.

[0021] In one embodiment, the top surface of the third magnet assembly is provided with a third notch;

[0022] The top wall of the third mounting groove is provided with a third protrusion, which is located within the third notch.

[0023] In one embodiment, the base includes:

[0024] A base plate, which is located on the bottom surface of the frame and is rotatably connected to the frame;

[0025] Built-in wiring, the built-in wiring being located within the base plate;

[0026] The first coil group and the second coil group are located on the base plate.

[0027] In one embodiment, the frame is rolledly connected to the base plate by a plurality of ball bearings;

[0028] The top surface of the base plate is provided with multiple grooves for mounting the balls;

[0029] The base also includes a plurality of abutment plates, at least a portion of which are located on the bottom wall of the plurality of grooves and abut against the plurality of balls.

[0030] In one embodiment, the plurality of abutment plates are integrally formed with the built-in circuitry.

[0031] In one embodiment, the top surface of the base plate is provided with four protrusions, and the top surface of each protrusion is provided with the groove;

[0032] The four balls are respectively located in the four grooves.

[0033] In one embodiment, the base further includes a plurality of adsorption plates located below the first coil group and the second coil group.

[0034] In one embodiment, a plurality of the adsorption plates are located above the built-in circuitry.

[0035] In one embodiment, the base further includes a plurality of support columns, which are connected to the top surface of the base plate;

[0036] A portion of the built-in wiring extends to the top surface of the support column and is electrically connected to the elastic element.

[0037] The elastic element is electrically connected to the third coil group.

[0038] In one embodiment, a guide post is provided between the carrier and the frame, and the guide post extends along the optical axis.

[0039] In one embodiment, the frame is provided with multiple adsorption plates, which are respectively attached to the sides of the first magnet group and the second magnet group.

[0040] In one embodiment, the carrier contains:

[0041] A circuit board, which is electrically connected to the third coil group;

[0042] A metal frame, which is electrically connected to the circuit board.

[0043] In one embodiment, the circuit board is located on one side of the third coil group;

[0044] The carrier has an internal metal plate located on the side of the circuit board opposite to the third coil group.

[0045] In one embodiment, the circuit board is electrically connected to the built-in wiring.

[0046] In one embodiment, the elastic element includes:

[0047] An upper spring, elastically connected to the top of the frame and the top of the carrier, and electrically connected to the built-in wiring and the circuit board; and

[0048] The lower spring is elastically connected to the bottom of the frame and the bottom of the carrier.

[0049] In one embodiment, the base further includes a plurality of sensors electrically connected to the built-in wiring for sensing the position of the frame.

[0050] In one embodiment, a sensor is also installed inside the carrier, and the sensor is electrically connected to the circuit board for sensing the position of the carrier. Attached Figure Description

[0051] Figure 1 and Figure 2 This is an exploded view of the lens driving mechanism according to one embodiment of the present invention.

[0052] Figure 3 yes Figure 1 A perspective view of the base in the illustrated embodiment.

[0053] Figure 4 This is an assembly diagram of the base's built-in circuitry, first adsorption plate, second adsorption plate, abutment plate, and first sensor, representing one embodiment of this utility model.

[0054] Figure 5 This is a perspective view of the first magnet group, the second magnet group, and the third magnet group according to an embodiment of this utility model.

[0055] Figure 6 and Figure 7 yes Figure 1 Assembly diagram of the frame and carrier in the illustrated embodiment.

[0056] Figure 8 yes Figure 1 Exploded view of the frame, first magnet group, second magnet group and third magnet group in the embodiment shown.

[0057] Figure 9 and Figure 10 They are Figure 1 Exploded view of the frame and carrier in the illustrated embodiment.

[0058] Figure 11 yes Figure 1 The exploded view of the frame, the metal frame within the carrier, the third coil group, the circuit board, the built-in metal plate, and the second sensor in the embodiment shown.

[0059] Figure 12 yes Figure 8 The illustrated embodiment shows an assembly diagram of multiple third adsorption plates, a first magnet group, a second magnet group, and a third magnet group.

[0060] Figure 13 yes Figure 11 The illustrated embodiment shows an assembly diagram of the metal frame, third coil group, circuit board, built-in metal plate, and second sensor within the carrier.

[0061] Figure 14 yes Figure 1 An assembly diagram of the lens drive mechanism of the embodiment shown.

[0062] Figure 15 yes Figure 14 A cross-sectional view of the lens drive mechanism along line AA in the embodiment shown.

[0063] Reference numerals: 100, Lens drive mechanism; 1, Base; 11, Base plate; 111, First side; 112, Second side; 12, Support column; 13, Boss; 131, Ball bearing; 132, Groove; 141, First coil group; 142, Second coil group; 15, Built-in circuitry; 16, First adsorption plate; 17, Second adsorption plate; 18, First sensor; 19, Abutment plate; 2, Frame; 21, First magnet group; 211, First mounting groove; 212, First protrusion; 213. 22. First notch; 22. Second magnet group; 221. Second mounting groove; 222. Second protrusion; 223. Second notch; 23. Third magnet group; 231. Third mounting groove; 232. Third protrusion; 233. Third notch; 24. Third adsorption plate; 25. Second guide groove; 3. Carrier; 31. Third coil group; 32. Guide post; 34. Metal frame; 35. Circuit board; 36. Built-in metal plate; 37. Second sensor; 38. First guide groove; 4. Upper spring; 5. Housing. Detailed Implementation

[0064] To make the objectives, technical solutions, and advantages of this utility model clearer, the various embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this utility model to facilitate a better understanding of this application. However, the technical solutions claimed in the claims of this application can be implemented even without these technical details and with various variations and modifications based on the following embodiments.

[0065] Unless the context requires otherwise, throughout the specification and claims, the word “comprising” and its variations, such as “including” and “having”, shall be understood to have an open, inclusive meaning, that is, to be interpreted as “including, but not limited to”.

[0066] The embodiments of this utility model will be described in detail below with reference to the accompanying drawings to provide a clearer understanding of the purpose, features, and advantages of this utility model. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of this utility model, but are merely illustrative of the essential spirit of the technical solution of this utility model.

[0067] Throughout this specification, references to "an embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Therefore, the appearance of "in an embodiment" or "an embodiment" in various places throughout the specification does not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic may be combined in any manner in one or more embodiments.

[0068] The singular forms “a” and “the” used in this specification and the appended claims include plural references unless otherwise expressly stated herein. It should be noted that the term “or” is generally used to mean “and / or” unless otherwise expressly stated herein.

[0069] In the following description, in order to clearly demonstrate the structure and working method of this utility model, a number of directional terms will be used. However, terms such as "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", and "down" should be understood as convenient terms and not as limiting terms.

[0070] This utility model relates to a lens driving mechanism 100, which includes a base 1, a frame 2, a carrier 3, an elastic element, a first magnet group 21, a second magnet group 22, a third magnet group 23, a first coil group 141, a second coil group 142, a third coil group 31, and a housing 5. The base 1 includes a base plate 11, built-in circuitry 15, four support columns 12, multiple sensors, four protrusions 13 located on the top surface of the base plate 11, multiple adsorption plates, and four abutment plates 19.

[0071] The base plate 11 is rectangular and has four sides. Two opposite sides are defined as the first side 111, and the other two opposite sides are defined as the second side 112. The width of the first side 111 is greater than the width of the second side 112. The wider first side 111 is used to support the first coil group 141 and the second coil group 142, while the narrower second side 112 is used to avoid other components that are adapted to the lens drive mechanism 100.

[0072] Four bosses 13 are located at the four corners of the base plate 11, and the top surface of each boss is provided with a groove 132. At least one ball bearing 131 is installed in each groove, and these balls bearing 131 are used to support the rolling of the frame 2.

[0073] The four support columns 12 are of equal height and are respectively connected to the four corners of the base plate 11.

[0074] The built-in circuit 15 is installed inside the base plate 11, and a portion of the connection end of the built-in circuit 15 extends into the support column 12 for electrical connection with the elastic element. The other portion of the connection end is located inside one of the second sides 112 for electrical connection with the first coil group 141 and the second coil group 142.

[0075] The two sensors are defined as first sensors 18. The two first sensors 18 are located on the first side 111 of the base plate 11 and are connected to the built-in circuit 15 to sense the position of the frame 2 along the first direction or the second direction.

[0076] The first coil group 141 and the second coil group 142 are located above the two second sides 112 of the base plate 11, respectively.

[0077] Four abutment plates 19 are located within the base plate 11 and are positioned on the bottom wall of the groove 132. The four abutment plates 19 are metal plates used to prevent the ball bearings 131 from abrading the base plate 11. Preferably, the four abutment plates 19 are integrally formed with the built-in wiring 15, which is bent to increase the stability of both the abutment plates 19 and the built-in wiring 15.

[0078] Of the multiple adsorption plates, a portion of the adsorption plates are located within the first side 111 and below the first coil group 141, used to adsorb the first coil group 141 and increase its stability; this portion of the adsorption plates is defined as the first adsorption plate 16. Another portion of the adsorption plates are located within another second side 112 and below the second coil group 142, used to adsorb the second coil group 142; this portion of the adsorption plates is defined as the second adsorption plate 17.

[0079] Multiple adsorption plates are metal plates and are not on the same plane as the built-in circuit 15. Specifically, multiple adsorption plates are on the same horizontal plane and located above the built-in circuit 15. In other words, the adsorption plates and the built-in circuit 15 are arranged in a double layer.

[0080] The frame 2 is located within four support columns 12 and is connected to the base plate 11 by four ball bearings 131. The frame 2 is a rectangular frame and has a first mounting groove 211, a second mounting groove 221 and a third mounting groove 231 on three adjacent sides, respectively.

[0081] The first magnet group 21 is installed in the first mounting slot 211 and located above the first coil group 141, and works with the first coil group 141 to drive the frame 2 to move in the first direction.

[0082] The second magnet group 22 is installed in the second mounting slot 221 and is located above the second coil group 142, cooperating with the second coil group 142 to drive the frame 2 to move in the second direction.

[0083] The third magnet group 23 is installed in the third mounting slot 231 and cooperates with the third coil group 31 of the carrier 3 to drive the carrier 3 to move along the optical axis.

[0084] As a preferred embodiment, the first magnet group 21 includes three first magnets, which extend along a first direction and are arranged along a second direction. Both the first and second directions are radial, and the optical axis direction is the vertical direction.

[0085] Of the three first magnets, in two adjacent first magnets, the polarity of one first magnet is distributed along the optical axis, and the polarity of the other is distributed radially. Two first magnets that are spaced apart and whose polarities are distributed along the optical axis have opposite polarities.

[0086] In other words, among two adjacent first magnets, one first magnet has its N pole at the top and its S pole at the bottom, while the other first magnet has its N pole on the radially inner side and its S pole on the outer side. Similarly, among the two outer first magnets, one first magnet has its N pole at the top and its S pole at the bottom, while the other first magnet has its N pole at the bottom and its S pole at the top. Of course, the polarities of the two first magnets can also be reversed.

[0087] This arrangement can enhance the magnetic flux of the first magnet group 21 through the first coil group 141. By placing the two sides of the second coil group 142 directly below the first magnet group 21 in the radial direction, the radial dimension of the second coil group 142 can be reduced.

[0088] Of course, as a preferred embodiment, the second magnet group 22 is also arranged in the same manner as the first magnet group 21. Specifically, the second magnet group 22 includes three second magnets arranged radially. In two adjacent second magnets, one magnet's polarity is distributed along the optical axis, and the other is distributed radially. Two second magnets spaced apart and with their polarities distributed along the optical axis have opposite polarities. This can increase the magnetic flux of the second magnet group 22 and the second coil group 142.

[0089] The first mounting groove 211, the second mounting groove 221 and the third mounting groove 231 are respectively formed by the bottom surface of the frame 2, and the top wall of the first mounting groove 211 is provided with a protruding first protrusion 212, which is close to both ends of the first mounting groove 211.

[0090] The top wall of the second mounting groove 221 is provided with a protruding second protrusion 222, which is close to both ends of the second mounting groove 221.

[0091] The top wall of the third mounting groove 231 is provided with a protruding third protrusion 232, which is close to both ends of the third mounting groove 231.

[0092] The three first magnets of the first magnet group 21 are bonded together, and one of the first magnets has a first notch 213 at both ends. The first notch 213 and the first protrusion 212 complement each other and fit perfectly at the first protrusion 212, thereby increasing the stability of the first magnet group 21.

[0093] The three second magnets of the second magnet group 22 are bonded together, and one of the second magnets has a second notch 223 at both ends. The second notch 223 and the second protrusion 222 complement each other and fit perfectly at the second protrusion 222, increasing the stability of the second magnet group 22.

[0094] The top of the third magnet group 23 is provided with a third notch 233. The third notch 233 is located at both ends of the third magnet group 23 and complements the third protrusion 232 of the third mounting groove 231, thereby increasing the stability of the third magnet group 23.

[0095] To increase the stability of the first magnet group 21, the second magnet group 22, and the third magnet group 23, three additional adsorption plates are installed inside the frame 2. These three adsorption plates are defined as the third adsorption plate 24. The three adsorption plates are respectively stacked on the top surface of the first magnet group 21, the top surface of the second magnet group 22, and the outside of the third magnet group 23.

[0096] The adsorption plate located in the first magnet group 21 has an L-shaped cross-section, and its two sides are respectively attached to the top surface or inner surface of the first magnet group 21. Of course, the adsorption plate of the second magnet group 22 can also be set to an L-shape.

[0097] During the injection molding process, it is generally necessary to reserve the first mounting groove 211 and the second mounting groove 221. However, since the top or bottom wall of the first mounting groove 211 and the second mounting groove 221 is not easy to form a flat plane, the L-shaped adsorption plate is embedded in the frame 2 and the first mounting groove 211 and the second mounting groove 221 are reserved in the L-shaped adsorption plate. The L-shaped adsorption plate is set as the top surface of the first mounting groove 211 or the second mounting groove 221, and the side is the side wall of the groove 132. This can ensure the flatness of the groove 132 so that it can fit tightly with the first magnet group 21 and the second magnet group 22, thereby improving the adsorption force of the adsorption plate and the first magnet group 21 and the second magnet group 22.

[0098] The carrier 3 is used to mount the lens. The carrier 3 is movably mounted inside the ring of the frame 2 and is rotatably connected to the frame 2 via guide posts 32. In this embodiment, the carrier 3 has a large stroke along the optical axis. The guide posts 32 can increase the stability of the carrier 3's movement. Moreover, compared to the suspension wire, the four support posts 12 of the base 1 can also improve the stability of the frame 2, ensuring that the carrier 3 can operate stably under a large stroke.

[0099] Specifically, the third coil group 31 is mounted on the outside of the carrier 3 and radially aligned with the third magnet group 23, and is used to cooperate with the third magnet group 23 to drive the carrier 3 to move along the optical axis. It should be understood that in other embodiments, the third coil group 31 may also be disposed on the frame 2, while the third magnet group 23 may be disposed on the carrier 3.

[0100] The carrier 3 has two first guide grooves 38 extending along the optical axis on the side where the third coil group 31 is installed, and the frame 2 has a second guide groove 25 on the radial inner side. The two second guide grooves 25 and the two first guide grooves 38 are aligned and form a space for installing the guide post 32.

[0101] In other words, the two guide posts 32 are respectively installed in the space formed by the matching of the two second guide grooves 25 and the two first guide grooves 38. The guide posts 32 extend vertically and can be rolled in this space. When the carrier 3 moves along the optical axis, it will touch the guide posts 32, generating rolling friction with the guide posts 32, reducing friction, and also preventing the carrier 3 from tilting, thus playing a guiding role.

[0102] The carrier 3 also includes a metal frame 34, a circuit board 35, and an internal metal plate 36, wherein the metal frame 34 is in a bent-needle shape. The metal frame 34 is electrically connected to the internal circuit 15 and the third coil group 31.

[0103] The circuit board 35 is attached to the inner side of the third coil group 31 and is equipped with another sensor, namely the second sensor 37. The second sensor 37 is electrically connected to the circuit board 35 and is located inside the loop of the third coil group 31, and can sense the position of the carrier 3. The circuit board 35 is electrically connected to the metal frame 34 and the third coil group 31.

[0104] The built-in metal plate 36 is attached to the inside of the circuit board 35 to attract the third coil group 31.

[0105] The elastic element is an upper spring plate 4, which is located at the top and bottom of the frame 2 and is elastically connected to the frame 2 and the carrier 3 respectively. After the carrier 3 moves, the upper spring plate 4 can drive the carrier 3 to reset.

[0106] The upper spring 4 is also electrically connected to the connection end of the built-in circuit 15 at the top of the support column 12, and electrically connected to the metal frame 34 inside the carrier 3. After the built-in circuit 15 is energized, it can supply power to the third coil group 31.

[0107] The outer shell 5 covers the frame 2 and the support column 12 and is fixedly connected to the base plate 11, serving a protective function.

[0108] A chip is also installed inside the carrier 3, which, when powered on, enables the monitoring of the movement position of the carrier 3 and the lens in the optical axis direction.

[0109] The carrier 3 and the frame 2 are connected by a rolling guide post 32. Even if the carrier 3 has a large stroke, the stability of the carrier 3's movement can be guaranteed. At the same time, the first capacitor is configured to accurately sense the position of the carrier 3.

[0110] The third adsorption plate 24 inside the frame 2 can ensure the stability of several magnet groups, and the built-in metal plate 36 inside the carrier 3 can also ensure the stability of the third coil group 31. Therefore, even if the carrier 3 has a large stroke, the stable operation of the entire lens drive mechanism 100 can be guaranteed.

[0111] The preferred embodiments of the present invention have been described in detail above, but it should be understood that, if necessary, aspects of the embodiments can be modified to utilize aspects, features, and concepts from various patents, applications, and publications to provide other embodiments.

[0112] In light of the detailed description above, these and other changes can be made to the embodiments. Generally, the terminology used in the claims should not be considered limited to the specific embodiments disclosed in the specification and claims, but should be understood to include all possible embodiments together with the full scope of equivalents enjoyed by these claims.

[0113] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A lens driving mechanism, characterized in that, include: A base, wherein a first coil group and a second coil group are provided on the base; A frame, which is movably connected to the base and is provided with a first mounting groove, the top wall of which is provided with a first protrusion; A first magnet group is located above and cooperates with the first coil group to drive the frame to move in a first direction. The first magnet group includes at least three first magnets arranged radially. The polarity of one of two adjacent first magnets is distributed along the optical axis, and the other is distributed radially. The polarities of two first magnets that are spaced apart and whose polarities are distributed along the optical axis are opposite. At least one of the multiple first magnets has a first notch on its top surface, and the first notch is complementary to the first protrusion. The second magnet group is connected to the frame and located above the second coil group, and cooperates with the second coil group to drive the frame to move in the second direction; A carrier, which is connected to the frame and is configured to move along the optical axis, is used to mount a lens; An elastic element is elastically connected to the frame and the carrier.

2. The lens driving mechanism according to claim 1, characterized in that, The first magnet group includes three first magnets arranged radially, wherein the polarities of the two first magnets located on both sides are distributed along the optical axis.

3. The lens driving mechanism according to claim 1, characterized in that, The bottom surface of the frame is provided with a second mounting groove, and the top wall of the second mounting groove is provided with a second protrusion; The top surface of the second magnet assembly is provided with a second notch that complements and matches the second protrusion.

4. The lens driving mechanism according to claim 3, characterized in that, The second magnet group includes at least three second magnets arranged radially, one of two adjacent second magnets having a polarity distributed along the optical axis and the other having a radial polarity, and two second magnets spaced apart and having polarities distributed along the optical axis having opposite polarities; at least one of the multiple second magnets has a second notch on its top surface.

5. The lens driving mechanism according to claim 1, characterized in that, The bottom surface of the frame is provided with a third mounting groove; The lens driving mechanism also includes: A third magnet assembly, the third magnet assembly being located within the third mounting slot; and The third coil group is connected to the carrier and cooperates with the third magnet group to drive the carrier to move along the optical axis.

6. The lens driving mechanism according to claim 5, characterized in that, The top surface of the third magnet group is provided with a third notch; The top wall of the third mounting groove is provided with a third protrusion, which is located within the third notch.

7. The lens driving mechanism according to claim 5, characterized in that, The base includes: A base plate, which is located on the bottom surface of the frame and is rotatably connected to the frame; Built-in wiring, the built-in wiring being located within the base plate; The first coil group and the second coil group are located on the base plate.

8. The lens driving mechanism according to claim 7, characterized in that, The frame is connected to the base plate by multiple ball bearings; The top surface of the base plate is provided with multiple grooves for mounting the balls; The base also includes a plurality of abutment plates, at least a portion of which are located on the bottom wall of the plurality of grooves and abut against the plurality of balls.

9. The lens driving mechanism according to claim 8, characterized in that, The plurality of abutment plates are integrally formed with the built-in circuitry.

10. The lens driving mechanism according to claim 8, characterized in that, The top surface of the base plate is provided with four protrusions, and the top surface of each protrusion is provided with the groove; The four balls are respectively located in the four grooves.

11. The lens driving mechanism according to claim 7, characterized in that, The base also includes multiple adsorption plates, which are located below the first coil group and the second coil group.

12. The lens driving mechanism according to claim 11, characterized in that, Multiple adsorption plates are located above the built-in circuitry.

13. The lens driving mechanism according to claim 7, characterized in that, The base also includes a plurality of support columns, which are connected to the top surface of the base plate; A portion of the built-in wiring extends to the top surface of the support column and is electrically connected to the elastic element. The elastic element is electrically connected to the third coil group.

14. The lens driving mechanism according to claim 5, characterized in that, A guide post is provided between the carrier and the frame, and the guide post extends along the optical axis.

15. The lens driving mechanism according to claim 1, characterized in that, The frame is provided with multiple adsorption plates, which are respectively attached to the sides of the first magnet group and the second magnet group.

16. The lens driving mechanism according to claim 7, characterized in that, The carrier contains: A circuit board, which is electrically connected to the third coil group; A metal frame, which is electrically connected to the circuit board.

17. The lens driving mechanism according to claim 16, characterized in that, The circuit board is located on one side of the third coil group; The carrier has an internal metal plate located on the side of the circuit board opposite to the third coil group.

18. The lens driving mechanism according to claim 16, characterized in that, The circuit board is electrically connected to the built-in circuitry.

19. The lens driving mechanism according to claim 18, characterized in that, The elastic element includes: An upper spring, elastically connected to the top of the frame and the top of the carrier, and electrically connected to the built-in wiring and the circuit board; and The lower spring is elastically connected to the bottom of the frame and the bottom of the carrier.

20. The lens driving mechanism according to claim 7, characterized in that, The base also includes multiple sensors that are electrically connected to the built-in wiring to sense the position of the frame.

21. The lens driving mechanism according to claim 17, characterized in that, The carrier is also equipped with a sensor, which is electrically connected to the circuit board and is used to sense the position of the carrier.

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