Lens driving device

Abstract

The utility model belongs to the technical field of optical imaging equipment, and particularly relates to a lens driving device, which comprises a base, a prism carrier, a lens carrier, a prism driving mechanism and a zoom driving mechanism, and a cross shaft is arranged between the prism carrier and the base; the cross shaft comprises a nodding shaft extending in the second direction and a shaking shaft extending in the first direction. A reed is further arranged between the prism carrier and the base, a reed limiting part is arranged on one side of the reed, and the reed limiting part is located on the outer side of one end of the nodding shaft and abuts against the nodding shaft. According to the utility model, the reed is arranged between the bottom end of the prism carrier and the base, so that the stability of the connection structure between the prism carrier and the base is improved, and the reset effect is improved. According to the utility model, the reed limiting part is abutted against one end of the nodding shaft, so that the position of the nodding shaft is limited through the elastic thrust, and the relative sliding action between the nodding shaft and the prism carrier is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of optical imaging equipment, and in particular relates to a lens driving device. Background Art

[0002] With the development of technology, many electronic devices (such as smart phones or digital cameras) now have the function of taking photos or recording videos. These electronic devices are becoming more and more popular and are developing in the direction of convenient and lightweight designs to provide users with more choices.

[0003] Lens drive devices are used in lightweight designs because they significantly reduce the thickness and weight of the device. The structure of a lens drive device typically consists of two parts: a lens and a prism. The prism is located at the front end, and an imaging chip is located at the rear end of the lens. Light is reflected by the prism, redirecting it to the lens, where it is zoomed and then transferred to the imaging chip.

[0004] Specifically, the prism part can usually nod and shake on the base to change the angle of light. These actions require the prism magnet and the prism coil that matches it to be realized. How to achieve stable nodding and shaking actions of the prism part is a problem that needs to be solved at present. Utility Model Content

[0005] The present invention aims to solve the above-mentioned technical problems and provides a lens driving device.

[0006] A lens driving device comprises a base, a prism carrier, a lens carrier, a prism driving mechanism and a zoom driving mechanism, wherein the lens carrier and the prism carrier are arranged in the base along a first direction, and a cross axis is provided between the prism carrier and the base;

[0007] The zoom driving mechanism drives the lens carrier to move along a first direction, and the prism driving mechanism drives the prism carrier to move around the first direction and a second direction perpendicular to the first direction with the cross axis as a fulcrum;

[0008] The cross axis includes a nodding axis extending along the second direction and a shaking axis extending along the first direction;

[0009] A reed is further provided between the prism carrier and the base. A reed limiting portion is provided on one side of the reed. The reed limiting portion is located outside one end of the nodding shaft and abuts against the nodding shaft.

[0010] Optionally, a reed support portion is further provided on one side of the reed, and the reed support portion is located outside the reed limiting portion, and the outer side of the reed support portion abuts against the inner wall of the base.

[0011] Optionally, the spring limiting portion and the spring supporting portion are both vertical sheet structures.

[0012] Optionally, the lower portion of the reed limiting portion is bent toward one side of the reed supporting portion, and the bottom end of the reed limiting portion is connected to the reed;

[0013] The lower portion of the spring support portion is bent toward one side of the spring limiting portion, and the bottom end of the spring support portion is connected to the spring.

[0014] Optionally, the spring limiting portion includes a connecting portion connected to the spring and an abutting portion abutting against the nodding shaft, and the bottom end of the abutting portion is connected to the connecting portion.

[0015] Optionally, the abutting portion is a T-shaped structure, the bottom end of the vertical section of the abutting portion is connected to the connecting portion, and the horizontal section of the abutting portion abuts against the nodding shaft.

[0016] Optionally, the connecting portion includes two U-shaped outer connecting portions and an inner connecting portion, the inner connecting portion is located in the middle groove of the outer connecting portion, and the top ends of the inner connecting portion are connected to the top ends of the middle groove of the outer connecting portion;

[0017] The bottom end of the abutting portion extends into the middle groove of the inner connecting portion and is connected to the bottom end of the middle groove of the inner connecting portion.

[0018] Optionally, one or more limiting portion through grooves are dug on the spring limiting portion.

[0019] Optionally, the reed is a rectangular frame-like structure, and the reed limiting portion is arranged on the short side of the reed.

[0020] Optionally, the spring sheet includes several prism carrier connecting parts for connecting to the bottom surface of the prism carrier, and several base connecting parts connected to the inner bottom surface of the base. The prism carrier connecting parts and the base connecting parts are spaced apart and connected to each other by elastic spring wires. The several prism carrier connecting parts, the several base connecting parts and the several elastic spring wires form the spring sheet with a rectangular frame structure.

[0021] Optionally, the elastic spring wire is an I-shaped bending structure or a plurality of U-shaped bending structures connected in series.

[0022] Optionally, when the elastic spring wire is a plurality of U-shaped bending structures connected in series, the lengths of the U-shaped bending structures are the same or different.

[0023] Optionally, a nodding shaft mounting groove and a shaking shaft mounting groove are provided at the bottom end of the prism carrier, a nodding shaft is mounted in the nodding shaft mounting groove, a shaking shaft is mounted in the shaking shaft mounting groove, and the shaking shaft is a magnetic shaking shaft;

[0024] A positioning magnet installation groove is provided at the rear end of the prism carrier, and a positioning magnet is installed in the positioning magnet installation groove. The positioning magnet is arranged opposite to one end of the shaking head shaft and is attracted to each other.

[0025] Optionally, a nodding shaft mounting groove and a shaking shaft mounting groove are provided at the bottom end of the prism carrier, a nodding shaft is mounted in the nodding shaft mounting groove, and a shaking shaft is mounted in the shaking shaft mounting groove;

[0026] The inner wall of the nodding shaft installation groove is provided with one or more convex point structures.

[0027] Optionally, support grooves are provided on both sides of the prism carrier, and a cross shaft mounting groove is provided at the bottom end of the prism carrier, and the cross shaft is mounted in the cross shaft mounting groove;

[0028] Both ends of the nodding shaft are arranged on support platforms on both sides of the base, and one of the support platforms extends into a corresponding one of the support grooves to support the nodding shaft.

[0029] Optionally, the prism driving mechanism includes a nodding coil arranged at the bottom inner portion of the base, a shaking coil arranged on the side wall of the base, a nodding magnet arranged at the bottom end of the prism carrier, and a shaking magnet arranged on the side wall of the prism carrier, the nodding coil and the nodding magnet are arranged opposite to each other, and the shaking coil and the shaking magnet are arranged opposite to each other;

[0030] The nodding coil and the shaking magnet are powered by a circuit board arranged on the outside of the base.

[0031] Optionally, the circuit board is an FPC board.

[0032] Optionally, a shaking head magnet installation groove is provided on one side of the prism carrier, the shaking head magnet is installed in the shaking head magnet installation groove, and a supporting groove is provided near the middle position of one side of the prism carrier and on the opposite side;

[0033] Of the two support platforms on the base, one is located at the side as a first support platform, and the other is located near the middle as a second support platform, so as to extend into the two support grooves respectively;

[0034] The spring limiting portion extends to a position between the support groove where the second support platform is located and the shaking head magnet installation groove.

[0035] Optionally, the base is provided with a light outlet that is connected inside and outside, the light outlet is located at the front end of the lens carrier, a plug-in board slot is provided on the inner side of the light outlet, the plug-in board slot is plugged into the plug-in board, and the plug-in board is provided with an avoidance hole. The avoidance holes on different plug-in boards have different sizes, and the size of the light outlet of the base is adjusted by replacing the plug-in board.

[0036] Beneficial effects: The present invention has at least one or more of the following advantages:

[0037] 1. The utility model provides a spring between the bottom end of the prism carrier and the base to increase the stability of the connection structure between the prism carrier and the base and improve the reset effect.

[0038] 2. The utility model uses a spring limiter to abut against one end of the nodding shaft to limit the position of the nodding shaft through elastic thrust, thereby preventing relative sliding between the nodding shaft and the prism carrier.

[0039] The utility model increases the supporting effect of the spring limiting portion by abutting the spring supporting portion against the inner wall of the base, so that the spring limiting portion has better elastic potential energy and structural strength.

[0040] 3. In order to limit the position of the shaking head shaft, the utility model uses a positioning magnet to adsorb one end of the magnetic shaking head shaft to avoid relative sliding between the shaking head shaft and the prism carrier.

[0041] In order to limit the position of the shaking head axis, the utility model arranges a convex structure on the inner wall of the nodding shaft installation groove. The convex structure can reduce the gap between the inner wall of the nodding shaft installation groove and the nodding shaft, making it difficult for the nodding shaft to move in the nodding shaft installation groove, thereby ensuring that the shaking head axis will not slide relative to the prism carrier, and also avoiding relative sliding between the shaking head axis and the prism carrier.

[0042] 4. When the utility model sets a shaking head magnet on one side of the prism carrier, it affects the design position of the support groove that accommodates the second support platform. Therefore, the utility model sets the second support platform that should be set on the side wall of one side of the base close to the middle. Correspondingly, a support groove for accommodating the second support platform is set near the middle of the side wall of the prism carrier. The cross axis at the bottom end of the prism carrier is mounted on the two support platforms, and the shaking head magnet mounting groove for mounting the shaking head magnet is set on the outside of the support groove for accommodating the second support platform. This design will not affect the installation operation of the shaking head magnet.

[0043] 5. The utility model sets a plug-in plate at the front end of the lens carrier to be plugged into the base. The plug-in plate with different apertures can be replaced as needed. By replacing the plug-in plate, the size of the light outlet of the base can be adjusted to change the angle range of the emitted light. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 A structural diagram of the utility model;

[0045] Figure 2 for Figure 1 AA section view;

[0046] Figure 3 for Figure 1 BB cross-sectional view;

[0047] Figure 4 for Figure 1 Exploded diagram;

[0048] Figure 5 for Figure 4 Further exploded diagram of;

[0049] Figure 6 for Figure 5 Schematic diagram of the prism carrier and lens carrier from another angle;

[0050] Figure 7 This is a structural diagram of a prism carrier of the utility model;

[0051] Figure 8 for Figure 7 Schematic diagram from another angle;

[0052] Figure 9 for Figure 8 Schematic diagram of some structures in ;

[0053] Figure 10 for Figure 9 Schematic diagram of some structures in ;

[0054] Figure 11 This is another structural schematic diagram of the prism carrier of the present utility model;

[0055] Figure 12 for Figure 11 Partial structural diagram;

[0056] Figure 13 This is a structural diagram of the reed of the utility model;

[0057] Figure 14 This is another structural schematic diagram of the reed of the utility model;

[0058] Figure 15 for Figure 5 Another angle diagram of the middle base;

[0059] Figure 16 This is a diagram showing the positional relationship between the base and the reed of the present utility model;

[0060] Figure 17This is a diagram showing the positional relationship between the base, the cross shaft, and the spring of the utility model. DETAILED DESCRIPTION

[0061] The following will be combined with the accompanying drawings to describe the preferred embodiments of the present invention in detail so that the purpose, features and advantages of the present invention can be more clearly understood. It should be understood that the embodiments shown in the accompanying drawings are not intended to limit the scope of the present invention, but are only intended to illustrate the essential spirit of the technical solution of the present invention.

[0062] In the following description, for the purpose of illustrating the various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the relevant art will recognize that the embodiments may be practiced without one or more of these specific details. In other cases, well-known devices, structures, and techniques associated with this application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0063] Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any manner in one or more embodiments.

[0064] In the following description, in order to clearly demonstrate the structure and working mode of the present invention, many directional words will be used for description, but words such as "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", and "down" should be understood as convenient terms and should not be understood as restrictive terms.

[0065] In the following description, the first direction is defined as the direction along the optical axis of the zoom lens, the second direction is defined as the direction perpendicular to the first direction and parallel to the lower surface of the base, and the third direction is defined as the direction perpendicular to the first and second directions. That is, the third direction is the direction of the plumb line when the base is normally placed. In other words, when a coordinate system is established with the third direction as the Z-axis and the first direction as the X-axis, the second direction is the Y-axis.

[0066] Reference Figures 1 to 17 An embodiment of the present invention provides a lens driving device, which includes a base 10, a prism carrier 20, a lens carrier 30, a prism driving mechanism and a zoom driving mechanism.

[0067] The lens carrier 30 and the prism carrier 20 are arranged in the base 10 along the first direction. Specifically, a prism carrier accommodating cavity and a lens carrier accommodating cavity may be provided in the base 10 along the first direction. The prism carrier 20 is used to install the prism and is arranged in the prism carrier accommodating cavity, and the lens carrier 30 is used to install the zoom lens and is arranged in the lens carrier accommodating cavity.

[0068] A cross shaft 60 is provided between the prism carrier 20 and the base 10 . The prism carrier 20 nods and shakes its head with the cross shaft 60 as a fulcrum, making the movement of the prism carrier 20 easier and reducing the movement resistance of the prism carrier 20 .

[0069] The zoom drive mechanism drives the lens carrier 30 in a first direction to achieve zooming. The prism drive mechanism drives the prism carrier 20 to move about the cross axis 60 in the first direction and in a second direction perpendicular to the first direction to achieve optical image stabilization. The prism carrier 20 drives the prism to perform nodding and shaking movements, which can redirect the light passing through it. The prism carrier 20 can move the prism to change the direction of the light. The nodding movement refers to the movement of the prism carrier 20 in the second direction, while the shaking movement refers to the movement of the prism carrier 20 in the first direction.

[0070] The cross axis 60 includes a nodding axis 61 extending along the second direction and a shaking axis 62 extending along the first direction. A spring 70 is also provided between the prism carrier 20 and the base 10. Figure 13 and Figure 14 A spring limiting portion 71 is provided on one side of the spring 70 . The spring limiting portion 71 is located outside one end of the nodding shaft 61 and abuts against the nodding shaft 61 .

[0071] The present invention provides a spring 70 between the bottom end of the prism carrier 20 and the base 10 to enhance the structural stability of the connection between the prism carrier 20 and the base 10 and improve the resetting effect. The spring stopper 71 abuts one end of the nodding shaft 61, thereby limiting the position of the nodding shaft 61 through elastic thrust, preventing relative sliding between the nodding shaft 61 and the prism carrier 20.

[0072] In one embodiment, referring to Figure 3 、 Figure 13 and Figure 14 A reed support portion 72 is further provided on one side of the reed 70 . The reed support portion 72 is located outside the reed limiting portion 71 , and the outer side of the reed support portion 72 abuts against the inner wall of the base 10 .

[0073] In the present invention, the spring support portion 72 abuts against the inner wall of the base 10 , thereby increasing the supporting effect on the spring limiting portion 71 , and making the spring limiting portion 71 have better elastic potential energy and structural strength.

[0074] In one embodiment, referring to Figure 13 and Figure 14 The spring limiting portion 71 and the spring supporting portion 72 are both vertical sheet structures.

[0075] In one embodiment, the lower portion of the reed stopper 71 is bent toward the reed support portion 72, and the bottom end of the reed stopper 71 is connected to the reed 70. The reed stopper 71 and the reed 70 are preferably integrally connected.

[0076] The lower portion of the spring support portion 72 is bent toward one side of the spring limiting portion 71, and the bottom end of the spring support portion 72 is connected to the spring 70. The spring support portion 72 and the spring 70 are preferably connected as one piece.

[0077] In one embodiment, referring to Figure 13 The spring limiting portion 71 includes a connecting portion connected to the spring and a contact portion contacting the nodding shaft, and the bottom end of the contact portion is connected to the connecting portion.

[0078] In one embodiment, the abutting portion is a T-shaped structure, the bottom end of the vertical section of the abutting portion is connected to the connecting portion, and the horizontal section of the abutting portion abuts against the nodding shaft.

[0079] In one embodiment, the connecting portion includes two U-shaped outer connecting portions and an inner connecting portion. The inner connecting portion is located within the middle groove of the outer connecting portion, and the top ends of the inner connecting portion are connected to the top ends of the inner groove of the outer connecting portion. The bottom end of the abutting portion extends into the middle groove of the inner connecting portion and connects to the bottom end of the middle groove of the inner connecting portion.

[0080] In one embodiment, referring to Figure 14 One or more limiting portion through grooves are dug on the limiting portion of the spring.

[0081] In one embodiment, referring to Figure 13 and Figure 14 The reed 70 is a rectangular frame structure, and the reed limiting portion 71 is arranged on the short side of the reed 70.

[0082] When the reed support portion 72 is present, the reed support portion 72 is also provided on the short side of the reed 70 .

[0083] In one embodiment, the spring 70 includes a plurality of prism carrier connection portions 73 for connecting to the bottom surface of the prism carrier 20 and a plurality of base connection portions 74 connected to the inner bottom surface of the base 10. The prism carrier connection portions 73 and the base connection portions 74 are spaced apart and connected to each other by an elastic spring wire 75. The plurality of prism carrier connection portions 73, the plurality of base connection portions 74 and the plurality of elastic spring wires 75 form a spring 70 with a rectangular frame structure.

[0084] Specifically, the two long rectangular sheet-like base connecting portions 74 form the short sides of the rectangular frame-like structure. The long sides of the rectangular frame-like structure are: the two circular sheet-like prism carrier connecting portions 73 are each connected to a short rectangular sheet-like base connecting portion 74 via two elastic spring wires 75, and the two circular sheet-like prism carrier connecting portions 73 are each connected to the adjacent long rectangular sheet-like base connecting portion 74 via another elastic spring wire 75.

[0085] A connecting hole may be provided on the base connecting portion 74 having a short rectangular sheet structure, and a connecting column may be provided on the base, with the connecting hole being plugged into the connecting column.

[0086] In one embodiment, referring to Figure 13 The elastic spring wire 75 is a cross-shaped bending structure.

[0087] In one embodiment, referring to Figure 14 The elastic spring wire 75 is a plurality of U-shaped bending structures connected in series.

[0088] When the elastic spring wire 75 is a plurality of U-shaped bending structures connected in series, the lengths of the various U-shaped bending structures are the same or different.

[0089] In one embodiment, referring to Figure 9 and Figure 10 The bottom end of the prism carrier 20 is provided with a nodding shaft mounting groove 21 and a shaking shaft mounting groove 22. The nodding shaft mounting groove 21 and the shaking shaft mounting groove 22 are perpendicular to each other and connected. The shaking shaft mounting groove 22 is located below the middle of the nodding shaft mounting groove 21. A nodding shaft 61 is installed in the nodding shaft mounting groove 21, and a shaking shaft 62 is installed in the shaking shaft mounting groove 22. The shaking shaft 62 adopts a magnetic shaking shaft 62.

[0090] Reference Figure 9 and Figure 10 A positioning magnet mounting groove 23 is provided at the rear end of the prism carrier 20, and a positioning magnet 63 is installed in the positioning magnet mounting groove 23. The positioning magnet 63 is arranged opposite to one end of the shaking head shaft 62 and adsorbs each other.

[0091] In order to limit the position of the wobbling shaft 62 , the present invention uses a positioning magnet 63 to adsorb one end of the magnetic wobbling shaft 62 to prevent relative sliding between the wobbling shaft 62 and the prism carrier 20 .

[0092] In one embodiment, referring to Figure 11 and Figure 12The bottom end of the prism carrier 20 is provided with a nodding shaft mounting groove 21 and a shaking shaft mounting groove 22. The nodding shaft mounting groove 21 and the shaking shaft mounting groove 22 are perpendicular to each other and connected. The shaking shaft mounting groove 22 is located below the middle of the nodding shaft mounting groove 21. A nodding shaft 61 is installed in the nodding shaft mounting groove 21, and a shaking shaft 62 is installed in the shaking shaft mounting groove 22. The shaking shaft 62 adopts a magnetic shaking shaft 62.

[0093] One or more convex structures 24 are provided on the inner wall of the nodding shaft installation groove 21 .

[0094] In order to limit the position of the shaking head shaft 62, the utility model sets a convex structure 24 on the inner wall of the nodding shaft mounting groove 21. The convex structure 24 can reduce the gap between the inner wall of the nodding shaft mounting groove 21 and the nodding shaft 61, making it difficult for the nodding shaft 61 to move in the nodding shaft mounting groove 21, thereby ensuring that the shaking head shaft 62 will not slide relative to the prism carrier 20, and also avoiding relative sliding between the shaking head shaft 62 and the prism carrier 20.

[0095] In one embodiment, referring to Figures 9 to 12 The prism carrier 20 is provided with support grooves 25 on both sides, and a cross-axis mounting groove is provided at the bottom end of the prism carrier 20, in which the cross-axis is installed. The cross-axis mounting groove has a nodding axis mounting groove 21 and a shaking axis mounting groove 22. The nodding axis mounting groove 21 and the shaking axis mounting groove 22 are perpendicular to each other and connected. The shaking axis mounting groove 22 is located below the middle of the nodding axis mounting groove 21. A nodding axis 61 is installed in the nodding axis mounting groove 21, and a shaking axis 62 is installed in the shaking axis mounting groove 22.

[0096] Reference Figure 15 The two ends of the nodding shaft 61 are arranged on the support platforms 11 on both sides of the base 10. After the prism carrier 20 is installed with the base 10, one support platform 11 extends into a corresponding support groove 25 and supports the nodding shaft 61.

[0097] In one embodiment, referring to Figures 2 to 7 The prism driving mechanism includes a nodding coil 41 arranged at the bottom of the base 10, a shaking coil 42 arranged on the side wall of the base 10, a nodding magnet 43 arranged at the bottom end of the prism carrier 20, and a shaking magnet 44 arranged on the side wall of the prism carrier 20. The nodding coil 41 and the nodding magnet 43 are arranged opposite to each other, and the two cooperate to realize the nodding action of the prism carrier 20. The shaking coil 42 and the shaking magnet 44 are arranged opposite to each other, and the two cooperate to realize the shaking action of the prism carrier 20.

[0098] The nodding coil 41 and the shaking magnet 44 are powered by a circuit board 12 disposed outside the base 10 .

[0099] Specifically, the nodding coil 41 and the shaking coil 42 can be connected to the circuit board 12. A coil avoidance hole can be set at the bottom of the base 10 to accommodate the nodding coil 41. Another coil avoidance hole can be set on the side wall of the base 10 to accommodate the shaking coil 42.

[0100] In one embodiment, the circuit board 12 is an FPC board.

[0101] In one embodiment, referring to Figures 9 to 12 A shaking magnet mounting groove 26 is provided on one side of the prism carrier 20, and the shaking magnet 44 is installed in the shaking magnet mounting groove 26. A supporting groove 25 is provided near the middle position on one side of the prism carrier 20 and on the opposite side.

[0102] Preferably, a nodding magnet mounting groove 27 is provided at the bottom end of the prism carrier 20, and the nodding magnet 43 is installed in the nodding magnet mounting groove 27, and the nodding magnet mounting groove 27 is located below the cross-axis mounting groove.

[0103] Reference Figures 15 to 17 Of the two supporting platforms 11 on the base 10, one is located on the side as a first supporting platform 11a, and the other is located near the middle as a second supporting platform 11b. The first supporting platform 11a extends into the supporting groove 25a, and the second supporting platform 11b extends into the supporting groove 25b.

[0104] Reference Figure 8 The spring limiting portion 71 extends into the position between the supporting groove 25b and the shaking head magnet installation groove 26.

[0105] When the present invention sets the shaking magnet 44 on one side of the prism carrier 20, it affects the design position of the support groove 25 that accommodates the second support platform 11b. Therefore, the present invention sets the second support platform 11b, which should be set on the side wall of one side of the base, closer to the middle. Correspondingly, a support groove 25b is set near the middle of the side wall of the prism carrier 20. The cross axis 60 at the bottom end of the prism carrier 20 is mounted on the two support platforms 11, and the shaking magnet mounting groove 26 for mounting the shaking magnet 44 is set on the outside of the support groove 25b. This design will not affect the installation operation of the shaking magnet 44.

[0106] In one embodiment, referring to Figure 5 and Figure 17 The base 10 is provided with a light outlet 13 that is connected inside and outside. The light outlet 13 is located at the front end of the lens carrier 30. A plug-in slot is provided on the inner side of the light outlet 13. The plug-in slot is plugged into the plug-in board 80. The plug-in board 80 is provided with an avoidance hole 81. The avoidance holes 81 on different plug-in boards 80 have different sizes. The size of the light outlet 13 of the base 10 can be adjusted by replacing the plug-in board 80.

[0107] In one embodiment, the zoom drive mechanism includes a zoom coil 45 arranged on the side wall of the base 10 and a zoom magnet 46 arranged on the side wall of the lens carrier 30. The zoom coil 45 and the zoom magnet 46 are arranged opposite to each other, and through the cooperation of the two, the lens carrier 30 is driven to move along the optical axis direction of the zoom lens.

[0108] The zoom coil 45 is powered by a circuit board 12 disposed outside the base 10 .

[0109] Specifically, the zoom coil 45 can be connected to the circuit board 12. A coil avoidance hole can be provided on the side wall of the base 10 to accommodate the zoom coil 45.

[0110] In one embodiment, one or more ball grooves 91 are provided on both sides of the bottom of the base 10 and the bottom of the lens carrier 30. Balls 9 are installed in the ball grooves 91. The upper and lower ends of the balls 9 on one side contact the upper and lower ball grooves 91 on the same side, respectively. The balls 9 provide rolling support for the lens carrier 30.

[0111] The number of ball grooves 91 on both sides of the bottom end of the base 10 and the bottom end of the lens carrier 30 and the number of balls 9 in the ball grooves 91 are not limited and can be determined according to actual conditions.

[0112] In one embodiment, the ball groove 91 is a V-shaped groove, an arc groove, or a plane groove.

[0113] In one embodiment, the lens drive device further includes a housing 50, which is detachably connected to the base 10, defining a housing cavity therebetween. The prism carrier 20, the lens carrier 30, the prism drive mechanism, and the zoom drive mechanism are disposed within the housing cavity. A light inlet may be provided on the housing 50, positioned relative to the prism on the prism carrier 20.

[0114] In one embodiment, referring to Figure 4 and Figure 5 A cover plate 31 is detachably provided on the top of the lens carrier 30, and the cover plate 31 is used to fix the lens.

[0115] While the preferred embodiments of the present invention have been described in detail above, it should be understood that after reading the above teachings of the present invention, those skilled in the art may make various changes or modifications to the present invention. Such equivalent forms also fall within the scope of the claims appended hereto.

Claims

1. A lens driving device, comprising a base, a prism carrier, a lens carrier, a prism driving mechanism, and a zoom driving mechanism, wherein the lens carrier and the prism carrier are disposed within the base along a first direction, and a cross axis is disposed between the prism carrier and the base; The zoom driving mechanism drives the lens carrier to move along a first direction, and the prism driving mechanism drives the prism carrier to move around the first direction and a second direction perpendicular to the first direction with the cross axis as a fulcrum; It is characterized by: The cross axis includes a nodding axis extending along the second direction and a shaking axis extending along the first direction; A reed is further provided between the prism carrier and the base. A reed limiting portion is provided on one side of the reed. The reed limiting portion is located outside one end of the nodding shaft and abuts against the nodding shaft.

2. The lens driving device according to claim 1, wherein: A reed support portion is further provided on one side of the reed, and the reed support portion is located outside the reed limiting portion, and the outer side of the reed support portion abuts against the inner wall of the base.

3. The lens driving device according to claim 2, wherein: The spring limiting portion and the spring supporting portion are both vertical sheet structures; And / or, the lower portion of the reed limiting portion is bent toward one side of the reed supporting portion, and the bottom end of the reed limiting portion is connected to the reed; And / or, the lower portion of the reed support portion is bent toward one side of the reed limiting portion, and the bottom end of the reed support portion is connected to the reed; And / or, the reed limiting portion includes a connecting portion connected to the reed and an abutting portion abutting against the nodding shaft, the bottom end of the abutting portion is connected to the connecting portion, or one or more limiting portion through grooves are dug on the reed limiting portion.

4. The lens driving device according to claim 3, wherein: When the spring limiting portion includes a connecting portion and an abutting portion, the abutting portion is a T-shaped structure, the bottom end of the vertical section of the abutting portion is connected to the connecting portion, and the horizontal section of the abutting portion abuts against the nodding shaft; The connecting portion includes two U-shaped outer connecting portions and an inner connecting portion, wherein the inner connecting portion is located in the middle groove of the outer connecting portion, and the top ends of the inner connecting portion are connected to the top ends of the middle groove of the outer connecting portion; The bottom end of the abutting portion extends into the middle groove of the inner connecting portion and is connected to the bottom end of the middle groove of the inner connecting portion.

5. The lens driving device according to claim 1, wherein: The reed is a rectangular frame structure, and the reed limiting portion is arranged on the short side of the reed; And / or, the spring sheet includes several prism carrier connecting parts for connecting to the bottom surface of the prism carrier, and several base connecting parts connected to the inner bottom surface of the base, the prism carrier connecting parts and the base connecting parts are arranged at intervals and connected to each other by elastic spring wires, and the several prism carrier connecting parts, the several base connecting parts and the several elastic spring wires form the spring sheet with a rectangular frame structure.

6. The lens driving device according to claim 5, wherein: The elastic spring wire is a U-shaped bending structure or a series of U-shaped bending structures; When the elastic spring wire is a plurality of U-shaped bending structures connected in series, the lengths of the U-shaped bending structures are the same or different.

7. The lens driving device according to any one of claims 1 to 6, wherein: The bottom end of the prism carrier is provided with a nodding shaft installation groove and a shaking shaft installation groove, the nodding shaft installation groove is provided with a nodding shaft, the shaking shaft installation groove is provided with a shaking shaft, and the shaking shaft adopts a magnetic shaking shaft; The rear end of the prism carrier is provided with a positioning magnet installation groove, in which a positioning magnet is installed. The positioning magnet is arranged opposite to one end of the shaking head shaft and is attracted to each other. Or, the bottom end of the prism carrier is provided with a nodding shaft installation groove and a shaking shaft installation groove, the nodding shaft installation groove is provided with a nodding shaft, and the shaking shaft installation groove is provided with a shaking shaft; The inner wall of the nodding shaft installation groove is provided with one or more convex point structures.

8. The lens driving device according to any one of claims 1 to 6, wherein: Support grooves are provided on both sides of the prism carrier, and a cross shaft mounting groove is provided at the bottom end of the prism carrier, and the cross shaft is installed in the cross shaft mounting groove; Both ends of the nodding shaft are arranged on support platforms on both sides of the base, and one of the support platforms extends into a corresponding one of the support grooves to support the nodding shaft; And / or, the prism driving mechanism includes a nodding coil arranged at the bottom inner portion of the base, a shaking coil arranged on the side wall of the base, a nodding magnet arranged at the bottom end of the prism carrier, and a shaking magnet arranged on the side wall of the prism carrier, the nodding coil and the nodding magnet are arranged opposite to each other, and the shaking coil and the shaking magnet are arranged opposite to each other; The nodding coil and the shaking magnet are powered by a circuit board arranged on the outside of the base.

9. The lens driving device according to claim 8, wherein: The circuit board is an FPC board; And / or, a shaking head magnet installation groove is provided on one side of the prism carrier, the shaking head magnet is installed in the shaking head magnet installation groove, and a supporting groove is provided near the middle position of one side of the prism carrier and on the opposite side; Of the two support platforms on the base, one is located at the side as a first support platform, and the other is located near the middle as a second support platform, so as to extend into the two support grooves respectively; The spring limiting portion extends to a position between the support groove where the second support platform is located and the shaking head magnet installation groove.

10. The lens driving device according to claim 1, wherein: The base is provided with a light outlet that is connected inside and outside, and the light outlet is located at the front end of the lens carrier. A plug-in board slot is provided on the inner side of the light outlet, and the plug-in board is plugged into the plug-in board slot. The plug-in board is provided with an avoidance hole. The avoidance holes on different plug-in boards have different sizes. The size of the light outlet of the base can be adjusted by replacing the plug-in board.

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