Lens drive device

Abstract

This utility model belongs to the field of optical imaging equipment technology, specifically relating to a lens driving device, including a base and a motor mechanism. The motor mechanism includes: a frame, mounted on the base, with an AF coil disposed on one side wall of the frame. The AF coil is positioned opposite to an AF magnet disposed on the side wall of the base, allowing the frame to move relative to the base in a third direction; an OIS coil plate, disposed within the frame, with an OIS coil disposed inside the OIS coil plate; and a carrier, disposed within the frame, with the OIS coil plate located between the carrier and the frame. An OIS magnet is disposed at the bottom of the carrier, with the OIS magnet positioned opposite to the OIS coil, allowing the carrier to move relative to the frame in a first direction and a second direction. This utility model, through an innovative positional design, ensures that the magnets used for AF zoom operation and image stabilization operation are independent and do not interfere with each other, guaranteeing the stability of autofocus and optical image stabilization control.

Description

Technical Field

[0001] This utility model belongs to the field of optical imaging equipment technology, and specifically relates to a lens driving device. Background Technology

[0002] With the development of technology, many electronic devices today (such as smartphones or digital cameras) have the function of taking pictures or recording videos. These electronic devices are equipped with lens drive mechanisms to drive the movement of optical components such as lenses, thereby achieving the functions of autofocus and optical image stabilization (OIS).

[0003] Existing lens drive mechanisms typically include an OIS coil mounted on the base, a magnet group mounted on the frame, and a zoom coil mounted on the carrier. The interaction between the OIS coil and the magnet group enables the frame and the carrier mounted on it to move relative to the base along the X and Y axes. The interaction between the zoom coil and the magnet group enables the carrier and the lens mounted on it to move relative to the frame along the Z axis, thus achieving three-axis lens movement. In this design, zoom and image stabilization operations share the same magnet group. If the magnets are too close together, their internal magnetic fields can interfere with each other, causing unintended displacement or shaking, reducing the stability of autofocus and optical image stabilization control. Utility Model Content

[0004] The present invention addresses the aforementioned technical problems by providing a lens driving device.

[0005] A lens driving device includes a base and a motor mechanism, the motor mechanism comprising:

[0006] A frame is mounted on the base. An AF coil is mounted on one side wall of the frame. The AF coil is positioned opposite to an AF magnet mounted on the side wall of the base, so that the frame can move relative to the base in a third direction.

[0007] OIS coil board, wherein the OIS coil board is disposed within the frame and an OIS coil is disposed inside the OIS coil board;

[0008] A carrier is disposed within the frame, an OIS coil plate is located between the carrier and the frame, and an OIS magnet is disposed at the bottom end of the carrier. The OIS magnet is disposed opposite to the OIS coil, so that the carrier can move relative to the frame in a first direction and a second direction.

[0009] Optionally, the first direction, the second direction, and the third direction are mutually perpendicular.

[0010] Optionally, there are two OIS magnets, which are respectively disposed on two adjacent sides at the bottom end of the carrier;

[0011] There are two OIS coils, and the two OIS coils are respectively arranged in two adjacent sides of the OIS coil plate.

[0012] Optionally, the OIS coil plate adopts an L-shaped coil plate structure.

[0013] Optionally, the motor mechanism further includes:

[0014] A circuit board is disposed within the frame and located between the carrier and the frame. The OIS coil board is disposed at the top of the circuit board. The circuit board is powered by the base-built-in circuitry within the base. The OIS coil is powered by the circuit board. The AF coil is powered by the circuit board via the frame-built-in circuitry within the frame.

[0015] Optionally, the circuit board is an FPC board.

[0016] Optionally, a power-conducting point is provided on one side of the base, and an elastic element is provided on one side of the circuit board, the elastic element being connected to the power-conducting point.

[0017] Optionally, a fixing protrusion is provided on one side of the frame, and a frame guide groove is provided on the outer side of the fixing protrusion;

[0018] A mounting protrusion is provided on one side of the base, and a base guide groove is provided on the inner wall of the mounting protrusion. A guide shaft is provided between the base guide groove and the frame guide groove.

[0019] Optionally, the AF coil is provided on the outer side of the fixed protrusion, and the frame guide groove is located on the side of the AF coil;

[0020] The AF magnet is fixedly mounted on the mounting protrusion, and the base guide groove is located on the side of the AF magnet.

[0021] Optionally, a built-in metal sheet is pre-embedded in the fixing protrusion, and the built-in metal sheet is arranged opposite to the AF magnet and attracts each other.

[0022] Optionally, the motor mechanism further includes:

[0023] A plurality of upper spring plates, one end of which is fixedly connected to the top of the carrier, and the other end of which is fixedly connected to the top of the frame or an electric rod provided on the frame. The carrier is suspended and supported within the frame by the upper spring plates or the upper spring plates and the electric rod.

[0024] Optionally, a friction-reducing mechanism is provided between the bottom end of the carrier and the frame to support the carrier within the frame. The friction-reducing mechanism is a ball bearing, roller, or lubricating material layer.

[0025] Optionally, the motor mechanism further includes:

[0026] A top housing is located above the carrier and is detachably connected to the frame. The top housing has a housing clearance opening on one side, and the AF coil is located inside the housing clearance opening, so that the AF coil is exposed in the top housing.

[0027] Optionally, the lens driving device further includes a position monitoring device, the position monitoring device comprising:

[0028] An AF sensing plate is disposed inside the base. The AF sensing plate forms an AF electrode plate slot with an opening at the top. The AF sensing plate is powered by a base-built circuit inside the base.

[0029] An AF electrode plate is disposed at the bottom of the frame. The AF electrode plate is powered by the circuit board through the frame's built-in metal. The bottom end of the AF electrode plate is inserted into the AF electrode plate slot.

[0030] Optionally, the lens driving device further includes a position monitoring device, the position monitoring device comprising:

[0031] The carrier has a built-in metal, which is disposed within the carrier, and an X-axis electrode plate and a Y-axis electrode plate are disposed at the bottom end of the built-in metal.

[0032] The circuit board has an X-axis sensing plate and a Y-axis sensing plate built into its two sides away from the OIS coil plate. The X-axis sensing plate is arranged opposite to the X-axis electrode plate, and the Y-axis sensing plate is arranged opposite to the Y-axis electrode plate.

[0033] Optionally, the metal embedded in the carrier is powered by the circuit board via the energizing rod and the upper spring, and the X-axis sensing plate and Y-axis sensing plate are powered by the circuit board.

[0034] Optionally, a control IC chip is provided at the bottom of the circuit board, and the control IC chip is respectively connected to the OIS coil, the X-axis sensing plate, and the Y-axis sensing plate.

[0035] Optionally, the lens driving device further includes:

[0036] The housing is located above the motor mechanism and is detachably connected to the base.

[0037] Beneficial effects: This utility model has at least one or more of the following advantages,

[0038] 1. This utility model abandons the traditional three-axis movement operation in terms of the setting position and driving relationship of the coil and magnet. This utility model sets the AF magnet on the base, sets the OIS magnet on the carrier, sets the AF coil on the frame, and sets the OIS coil on the OIS coil plate. Through the innovative position design, the magnets used for AF zoom operation and image stabilization operation are independent and do not interfere with each other, ensuring the stability of autofocus and optical image stabilization control.

[0039] In addition, since the AF magnet is set on the base and does not need to move during the AF operation, the overall weight of the frame is reduced when the AF operation is performed.

[0040] Secondly, since the OIS coil is set on the OIS coil board, there is no need to design for power supply on the carrier, which reduces the need for power supply design layout.

[0041] 2. The position monitoring device of this utility model adopts a capacitor structure instead of the traditional Hall sensor for detection. The capacitor structure has high accuracy and can ensure the stability of monitoring.

[0042] When using a capacitor structure for position monitoring, the capacitor structure of the carrier is powered through a circuit board via an energizing rod and an upper spring. The energizing rod and upper spring can support the carrier, making it suspended in the air to reduce friction during movement, and also power the built-in metal of the carrier. The structure is compact and reliable. Attached Figure Description

[0043] Figure 1 This is an exploded view of the structure of this utility model;

[0044] Figure 2 for Figure 1 Further exploded view;

[0045] Figure 3 This is an exploded view of one structure of the base of this utility model;

[0046] Figure 4 This is a schematic diagram of the internal circuit connection of the base of this utility model;

[0047] Figure 5 This is a schematic diagram of the motor mechanism of this utility model;

[0048] Figure 6 for Figure 5 Exploded view;

[0049] Figure 7 for Figure 6 Further exploded view;

[0050] Figure 8 for Figure 7 Further exploded view;

[0051] Figure 9 This is a schematic diagram of the structure of the carrier of this utility model;

[0052] Figure 10 This is a diagram showing the positional relationship between the interior of the carrier and the circuit boards of this utility model;

[0053] Figure 11 This is a schematic diagram of the internal structure of the frame of this utility model;

[0054] Figure 12 This is a top view of the structure of this utility model;

[0055] Figure 13 for Figure 12 AA sectional view. Detailed Implementation

[0056] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so as to better understand the purpose, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are only for illustrating the essential spirit of the technical solution of the present invention.

[0057] In the following description, certain specific details are set forth for the purpose of illustrating various disclosed embodiments in order to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the art will recognize that embodiments may be practiced without one or more of these specific details. In other instances, well-known apparatuses, structures, and techniques associated with this application may not have been shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0058] 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.

[0059] 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.

[0060] In the following description, the first direction is defined as the X-axis, the second direction as the Y-axis, and the third direction as the Z-axis, which is the optical axis. The optical axis represents the direction of light propagation within an optical element; it is an abstract concept and does not refer to a physical axis.

[0061] Reference Figures 1 to 13 This utility model provides a lens driving device, in which a lens through hole is provided in the middle along the optical axis (Z-axis direction). The lens driving device includes a base 10 and a motor mechanism, the motor mechanism including a frame 20, a carrier 30 and an OIS coil plate 40.

[0062] A motor mechanism is installed on the base 10, which is driven by electromagnetic force to move in the Z-axis direction. Specifically, the frame 20 is installed on the base 10, and an AF coil 51 is installed on one side wall of the frame 20. The AF coil 51 is positioned opposite to an AF magnet 52 installed on the side wall of the base 10. Under the combined action of the AF magnet 52 and the AF coil 51, the motor mechanism, including the frame 20 and the carrier 30, will move relative to the base 10 in the Z-axis direction.

[0063] The OIS coil plate 40 is disposed within the frame 20, and an OIS coil is disposed inside the OIS coil plate 40. The carrier 30 is disposed within the frame 20, and the OIS coil plate 40 is located between the carrier 30 and the frame 20. An OIS magnet 54 is disposed at the bottom of the carrier 30, and the OIS magnet 54 is disposed opposite to the OIS coil. The carrier 30 can move within the frame 20 in the X-axis and Y-axis directions through the cooperation of the OIS magnet 54 and the OIS coil.

[0064] The lens is mounted inside the carrier 30, and the three-axis image stabilization of the lens is achieved by the three-axis movement of the carrier 30.

[0065] This invention abandons the traditional three-axis movement operation where the coil and magnet are positioned and driven in a fixed manner. Instead, the AF magnet 52 is placed on the base 10, the OIS magnet 54 is placed on the carrier 30, the AF coil 51 is placed on the frame 20, and the OIS coil is placed on the OIS coil plate 40. Through this innovative positional design, the magnets used for AF zoom operation and image stabilization operation are independent and do not interfere with each other, ensuring the stability of autofocus and optical image stabilization control.

[0066] In addition, since the AF magnet 52 is set on the base 10 and does not need to be activated during the AF operation, the overall weight of the frame 20 is reduced when the AF operation is performed.

[0067] Secondly, since the OIS coil is set on the OIS coil board 40, there is no need to design for power supply on the carrier 30, which reduces the need for power supply design layout.

[0068] In one embodiment, the first direction, namely the X-axis direction, the second direction, namely the Y-axis direction, and the third direction, namely the Z-axis direction, are mutually perpendicular.

[0069] In one embodiment, reference is made to Figure 8 and Figure 9 There are two OIS magnets 54, which are respectively set on two adjacent sides at the bottom of the carrier 30.

[0070] Preferably, the carrier 30 has a rectangular structure with a lens mounting hole in the middle, and the two OIS magnets 54 are respectively set on the adjacent X-axis and Y-axis sides at the bottom of the carrier 30.

[0071] Preferably, the OIS magnets 54 are arranged in two groups, with each group positioned on one of two adjacent sides of the bottom end of the carrier 30. Each group of OIS magnets 54 consists of one or more OIS magnets 54 arranged side by side. In the OIS magnet group located on the X-axis side, one or more magnets are arranged side by side with their length along the X-axis and their length along the Y-axis; conversely, in the OIS magnet group located on the Y-axis side, one or more magnets are arranged side by side with their length along the Y-axis and their length along the X-axis.

[0072] In one embodiment, a groove is provided at the bottom end of the carrier 30, and an OIS magnet 54 is installed in the groove.

[0073] In one embodiment, reference is made to Figure 8 The OIS coil board 40 adopts an L-shaped coil board structure.

[0074] In one embodiment, reference is made to Figures 7 to 13 The motor mechanism also includes a circuit board 60.

[0075] The circuit board 60 is disposed within the frame 20 and located between the carrier 30 and the frame 20. The OIS coil board 40 is disposed on top of the circuit board 60. That is, from bottom to top, the components are the frame 20, the circuit board 60, the OIS coil board 40, and the carrier 30. The circuit board 60 is powered by the built-in circuit 11 within the base 10. The OIS coil is powered by the circuit board 60, and the AF coil 51 is powered by the circuit board 60 via the built-in circuit within the frame 20.

[0076] In one embodiment, the circuit board 60 is an FPC board.

[0077] In one embodiment, reference is made to Figure 2 and Figure 3 A power-on point 12 is provided on one side of the base 10, as shown in the reference. Figures 5 to 8 An elastic element 61 is provided on one side of the circuit board 60. The elastic element 61 is connected to the power point 12 to realize current transmission.

[0078] Of course, the elastic element 61 is a metal part, and preferably it is integrally formed with the circuit board 60. The design of the elastic element 61 ensures that the circuit is not disconnected when the frame 20 and the carrier 30 move longitudinally, so that the circuit board 60 remains powered.

[0079] In one embodiment, reference is made to Figures 5 to 8 A fixing protrusion 21 is provided on one side of the frame 20, and a frame guide groove 22 is provided on the outside of the fixing protrusion 21.

[0080] Reference Figures 2 to 3 A mounting protrusion 13 is provided on one side of the base 10, and a base guide groove 14 is provided on the inner wall of the mounting protrusion 13. The frame guide groove 22 and the base guide groove 14 are arranged opposite to each other, and a guide shaft 70 is provided between the frame guide groove 22 and the base guide groove 14. When the motor mechanism moves in the Z-axis direction, it is guided by the guide shaft 70.

[0081] Of course, a guiding device such as a ball bearing can also be provided between the frame guide groove 22 and the base guide groove 14.

[0082] In one embodiment, reference is made to Figures 5 to 8 An AF coil 51 is provided on the outside of the fixed protrusion 21, and two frame guide grooves 22 are located on both sides of the AF coil 51.

[0083] Reference Figures 2 to 3 An AF magnet 52 is fixedly mounted on the mounting protrusion 13, and two base guide grooves 14 are located on both sides of the AF magnet 52.

[0084] In one embodiment, reference is made to Figure 11An internal metal sheet 23 is embedded in the fixed protrusion 21. The internal metal sheet 23 is positioned opposite to the AF magnet 52 and attracts each other.

[0085] Because the built-in metal sheet 23 and the AF magnet 52 will generate an attraction force, the attraction force can bring the fixing protrusion 21 and the mounting protrusion 13 closer to each other, thus preventing the guide shaft 70 from disengaging from the frame guide groove 22 or the base guide groove 14.

[0086] In one embodiment, reference is made to Figures 6 to 8 The motor mechanism also includes several upper spring plates 80. One end of each upper spring plate 80 is fixedly connected to the top of the carrier 30. Several energized rods 81 are provided on the frame 20, and the other end of each upper spring plate 80 is fixedly connected to the top of the energized rod 81. The carrier 30 is suspended and supported within the frame 20 by the upper spring plates 80 and the energized rods 81. In this embodiment, the carrier 30 is supported by the upper spring plates 80 and the energized rods 81, and the carrier 30 is suspended in the air to reduce the friction when it moves.

[0087] The number of upper spring plates 80 can be determined according to the shape and specifications of the carrier 30 in the specific implementation. For example, when the carrier 30 is a rectangular structure, an upper spring plate 80 can be fixedly connected to each of the four corners of the carrier 30. At this time, the frame 20 can adopt a rectangular frame structure, and a power rod 81 can also be set at each of the four corners of the frame 20.

[0088] Of course, the power rod 81 may not be provided on the frame 20. The upper spring 80 is designed to be fixed at the top of the frame 20 and the top of the carrier 30 at the same time, so that it can play an auxiliary reset effect under the action of elasticity after the carrier 30 moves.

[0089] In addition to the support design using an electric rod 81 between the frame 20 and the carrier 30, other structural designs can be used instead. For example, a friction-reducing mechanism can be provided between the bottom of the carrier 30 and the frame 20. The friction-reducing mechanism supports the carrier 30 within the frame 20 to reduce friction. The friction-reducing mechanism includes, but is not limited to, balls, rollers, or a layer of lubricating material, etc., which can achieve the same technical effect as in this embodiment.

[0090] In one embodiment, reference is made to Figures 5 to 8 The motor mechanism also includes a top housing 90, which is located above the carrier 30. The top housing 90 is detachably connected to the frame 20. The top housing 90 has a housing clearance opening 91 on one side, and the AF coil 51 is located inside the housing clearance opening 91, so that the AF coil 51 is exposed in the top housing 90, which facilitates the driving action in the AF direction.

[0091] The top housing 90 is preferably fastened to the frame 20 to form a motor housing cavity. The carrier 30, OIS coil plate 40, AF coil 51, OIS magnet 54, circuit board 60, upper spring 80, and power rod 81 are all located inside the motor housing cavity, with the AF coil 51 exposed outside the motor housing cavity.

[0092] The design of the top housing 90 allows the motor mechanism to form a single, integrated structure. Of course, the motor can also function normally without the top housing 90.

[0093] In one embodiment, the lens driving device further includes a position monitoring device, which includes an AF sensing plate 55 and an AF electrode plate 56.

[0094] Reference Figures 2 to 4 An AF sensing plate 55 is disposed within the base 10, forming an AF electrode plate slot 551 with an opening at the top. The AF sensing plate 55 is powered by a base-built-in circuit 11 within the base 10. In a specific implementation, the AF sensing plate 55 can be configured as a U-shaped structure with the opening facing upwards to form the AF electrode plate slot 551, which is exposed outside the base 10.

[0095] Figures 5 to 8 as well as Figure 11 The AF electrode plate 56 is located at the bottom of the frame 20. The AF electrode plate 56 is powered by the circuit board 60 through the frame-in-frame metal 24 inside the frame 20. The bottom of the AF electrode plate 56 is inserted into the AF electrode plate slot 551.

[0096] After the AF electrode plate 56 is inserted into the AF electrode plate slot 551, it will be positioned opposite to the AF sensing plate 55. The AF electrode plate 56 and the AF sensing plate 55 form a capacitor structure. After the frame 20 moves along the Z-axis, the capacitance value of this capacitor structure will change. Based on this change, the Z-axis moving position of the frame 20 and the carrier 30 can be determined, thus achieving the effect of a Z-axis position sensor.

[0097] In one embodiment, a Z-axis control IC chip is provided in the base 10. The Z-axis control IC chip is connected to the AF sensing board 55 to receive the sensing capacitance value in the Z-axis direction, thereby realizing the position monitoring in the Z-axis direction.

[0098] The Z-axis control IC chip is also connected to the AF coil 51 via the circuit board 60 and the built-in circuitry of the frame, thereby controlling the energization state of the AF coil 51.

[0099] In one embodiment, the lens driving device further includes a position monitoring device, which includes a carrier-embedded metal 31, an X-axis electrode plate 57, a Y-axis electrode plate 58, an X-axis sensing plate 59, and a Y-axis sensing plate 510.

[0100] Reference Figure 10 The carrier-embedded metal 31 is disposed within the carrier 30, and an X-axis electrode plate 57 and a Y-axis electrode plate 58 are disposed at the bottom end of the carrier-embedded metal 31. Of course, the X-axis electrode plate 57 is disposed in the X-axis direction and its length direction is the X-axis direction, and the Y-axis electrode plate 58 is disposed in the Y-axis direction and its length direction is the Y-axis direction.

[0101] Reference Figure 10 The circuit board 60 has an X-axis sensing plate 59 and a Y-axis sensing plate 510 built into its two sides away from the OIS coil plate 40. The X-axis sensing plate 59 is arranged opposite to the X-axis electrode plate 57, and the Y-axis sensing plate 510 is arranged opposite to the Y-axis electrode plate 58.

[0102] The X-axis sensing plate 59 and the X-axis electrode plate 57 are arranged opposite each other to form an X-axis direction capacitance structure, and the Y-axis sensing plate 510 and the Y-axis electrode plate 58 are arranged opposite each other to form a Y-axis direction capacitance structure. When the carrier 30 and the built-in metal 31 move in the X-axis and Y-axis directions, the position of the carrier 30 in the X-axis and Y-axis directions can be monitored by the capacitance value between the X-axis sensing plate 59 and the X-axis electrode plate 57 and the capacitance value between the Y-axis sensing plate 510 and the Y-axis electrode plate 58.

[0103] like Figure 10 As shown, multiple X-axis electrode plates 57 can be provided, for example, three, arranged side-by-side along the X-axis. The lengths of the multiple X-axis electrode plates 57 can be the same or different. Multiple X-axis sensing plates 59 can be provided, for example, two, with two X-axis sensing plates 59 arranged side-by-side along the Y-axis. Similarly, multiple Y-axis electrode plates 58 can be provided, for example, three, arranged side-by-side along the Y-axis. The lengths of the multiple Y-axis electrode plates 58 can be the same or different. Multiple Y-axis sensing plates 510 can be provided, for example, two, with two Y-axis sensing plates 510 arranged side-by-side along the X-axis.

[0104] In one embodiment, the metal 31 built into the carrier is powered by the circuit board 60 via the power rod 81 and the upper spring 80, and the X-axis sensing plate 59 and the Y-axis sensing plate 510 are powered by the circuit board 60.

[0105] Since the circuit board 60 and the power-conducting rod 81 are fixed on the frame 20 respectively, the two can easily establish a current path. They can be directly connected or indirectly connected through the built-in circuit of the frame.

[0106] In one embodiment, reference is made to Figure 10 The bottom of the circuit board 60 is provided with a control IC chip 511, which is connected to the OIS coil, the X-axis sensing plate 59, and the Y-axis sensing plate 510 respectively.

[0107] The control IC chip 511 can control the power-on state of the OIS coil in the OIS coil board 50, and can also receive the sensing capacitance values ​​in the X-axis and Y-axis directions, thereby realizing position monitoring in the X-axis and Y-axis directions.

[0108] In one embodiment, reference is made to Figure 1 and Figure 2 , Figure 12 and Figure 13 The lens drive device also includes a housing 100, which is located above the motor mechanism and is detachably connected to the base 10.

[0109] The outer shell 100 is preferably fastened to the frame 20 to form a drive receiving cavity. The motor mechanism is disposed in the drive receiving cavity. The motor mechanism can move in the Z-axis direction in the drive receiving cavity. The carrier 30 in the motor mechanism can move relative to the frame 20 in the X-axis and Y-axis directions in the drive receiving cavity.

[0110] The design of the housing 100 allows the lens drive device to form an integral structure. In the design, the entire lens drive device can also function normally without the housing 100.

[0111] The preferred embodiments of this utility model have been described in detail above. However, it should be understood that after reading the above teachings, those skilled in the art can make various alterations or modifications to this utility model. These equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A lens driving device, characterized in that, The lens driving device includes a base and a motor mechanism, the motor mechanism including: A frame is mounted on the base. An AF coil is mounted on one side wall of the frame. The AF coil is positioned opposite to an AF magnet mounted on the side wall of the base, so that the frame can move relative to the base in a third direction. OIS coil board, wherein the OIS coil board is disposed within the frame and an OIS coil is disposed inside the OIS coil board; A carrier is disposed within the frame, an OIS coil plate is located between the carrier and the frame, and an OIS magnet is disposed at the bottom end of the carrier. The OIS magnet is disposed opposite to the OIS coil, so that the carrier can move relative to the frame in a first direction and a second direction.

2. The lens driving device as described in claim 1, characterized in that, The first direction, the second direction, and the third direction are all perpendicular to each other; And / or, there are two OIS magnets, which are respectively disposed on two adjacent sides of the bottom end of the carrier; there are two OIS coils, which are respectively disposed within two adjacent sides of the OIS coil plate; And / or, the OIS coil plate adopts an L-shaped coil plate structure.

3. The lens driving device as described in claim 1, characterized in that, The motor mechanism also includes: A circuit board is disposed within the frame and located between the carrier and the frame. The OIS coil board is disposed at the top of the circuit board. The circuit board is powered by the base-built-in circuitry within the base. The OIS coil is powered by the circuit board. The AF coil is powered by the circuit board via the frame-built-in circuitry within the frame.

4. The lens driving device as described in claim 3, characterized in that, The circuit board is an FPC board; And / or, a power-conducting point is provided on one side of the base, and an elastic element is provided on one side of the circuit board, the elastic element being connected to the power-conducting point.

5. The lens driving device as described in claim 1, characterized in that, A fixing protrusion is provided on one side of the frame, and a frame guide groove is provided on the outer side of the fixing protrusion; an installation protrusion is provided on one side of the base, and a base guide groove is provided on the inner wall of the installation protrusion, and a guide shaft is provided between the base guide groove and the frame guide groove.

6. The lens driving device as described in claim 5, characterized in that, The AF coil is provided on the outer side of the fixed protrusion, and the frame guide groove is located on the side of the AF coil; the AF magnet is fixedly provided on the mounting protrusion, and the base guide groove is located on the side of the AF magnet. And / or, a built-in metal sheet is pre-embedded in the fixed protrusion, and the built-in metal sheet is arranged opposite to the AF magnet and attracts each other.

7. The lens driving device as claimed in claim 1, characterized in that, The motor mechanism further includes: a plurality of upper spring plates, one end of which is fixedly connected to the top of the carrier, and the other end of which is fixedly connected to the top of the frame or an electric rod provided on the frame. The carrier is suspended and supported in the frame by the upper spring plates or the upper spring plates and the electric rod. And / or, a friction-reducing mechanism is provided between the bottom end of the carrier and the frame, and the carrier is supported in the frame by the friction-reducing mechanism, which is a ball, roller or lubricating material layer; And / or, the motor mechanism further includes: a top housing located above the carrier, the top housing being detachably connected to the frame, the top housing having a housing clearance opening on one side, and the AF coil being located inside the housing clearance opening, such that the AF coil is exposed in the top housing; And / or, the lens drive device further includes: a housing located above the motor mechanism, the housing being detachably connected to the base.

8. The lens driving device according to any one of claims 1 to 7, characterized in that, The lens driving device further includes a position monitoring device, which includes: An AF sensing plate is disposed inside the base. The AF sensing plate forms an AF electrode plate slot with an opening at the top. The AF sensing plate is powered by a base-built circuit inside the base. An AF electrode plate is disposed at the bottom end of the frame. The AF electrode plate is powered by the circuit board through the frame's built-in metal. The bottom end of the AF electrode plate is inserted into the AF electrode plate slot. And / or, the lens driving device further includes a position monitoring device, the position monitoring device comprising: The carrier has a built-in metal, which is disposed within the carrier, and an X-axis electrode plate and a Y-axis electrode plate are disposed at the bottom end of the built-in metal. The circuit board has an X-axis sensing plate and a Y-axis sensing plate built into its two sides away from the OIS coil plate. The X-axis sensing plate is arranged opposite to the X-axis electrode plate, and the Y-axis sensing plate is arranged opposite to the Y-axis electrode plate.

9. The lens driving device as described in claim 8, characterized in that, The motor mechanism also includes: A plurality of upper spring plates, one end of which is fixedly connected to the top of the carrier, and the other end of which is fixedly connected to an electric rod provided on the frame, thereby suspending and supporting the carrier within the frame through the upper spring plates and the electric rod; The metal embedded in the carrier is powered by the circuit board via the power rod and the upper spring plate, and the X-axis sensing plate and Y-axis sensing plate are powered by the circuit board.

10. The lens driving device as claimed in claim 8, characterized in that, A control IC chip is provided at the bottom of the circuit board, and the control IC chip is connected to the OIS coil, the X-axis sensing plate, and the Y-axis sensing plate respectively.

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