Lens driving device, camera, and electronic device

Abstract

The present application relates to a lens driving device, a camera and an electronic device. The lens driving device comprises a fixed part, a focusing movable part with a lens seat, an anti-shake movable part of an anti-shake support, a focusing support part connecting the fixed part and the movable part and allowing the focusing movable part to move along the optical axis direction of the lens relative to the anti-shake support, an anti-shake support part allowing the movable part of the anti-shake support to move along the vertical direction of the optical axis relative to the fixed part, and a driving part. The driving part comprises a magnet fixed on the fixed part, a focusing coil fixed on the lens seat, and an anti-shake coil fixed on the anti-shake support. The winding axis of the focusing coil substantially coincides with the optical axis and is located in front of or behind the magnet. The lens driving device of the present application can make the driving coil work stably in the magnetic field generated by the peripheral driving magnet, and is not easily affected by the magnetic field of the adjacent camera and the magnetic field or electric wave of the nearby metal device. That is, the magnetic interference between adjacent cameras is reduced.

Description

Technical Field

[0001] This invention relates to cameras, and more specifically, to camera lens drive mechanisms, cameras, and electronic devices. Background Technology

[0002] The camera capabilities of current electronic devices are becoming increasingly powerful, with more and more cameras being configured. For example, some mobile phones include four cameras: a main camera, an ultra-wide-angle camera, a telephoto camera, and a depth-sensing camera. These multiple cameras are typically placed close together. Traditional camera motors (lens drive mechanisms) use a moving magnet design. For instance, in a spring-linear spring type OIS (Optical Image Stabilization) motor, the magnet is fixed to a magnet bracket on the movable part; in a ball bearing type OIS motor, the magnet is fixed to the lens mount, while the drive coil is fixed to the fixed part. This structure makes it easy for the motors of adjacent cameras to generate mutual magnetic interference and is also susceptible to interference from nearby metal devices, such as microphones and radio frequency communication devices, leading to unstable operation. Summary of the Invention

[0003] The purpose of this invention is to provide a static magnetic lens drive device, camera, and electronic device that can reduce magnetic interference between adjacent cameras.

[0004] A lens driving device includes a fixed part; a movable part including a lens holder for fixing a lens; a support part connecting the fixed part and the movable part and allowing the movable part to move relative to the fixed part along the optical axis of the lens; and a driving part for driving the movable part to move relative to the fixed part. The driving part includes a magnet fixed to the fixed part and a focusing coil fixed to the lens holder. The subject is defined as being located directly in front of the lens driving device, and the winding axis of the focusing coil is substantially coincident with the optical axis and located in front of or behind the magnet. Because the driving magnet is located in the fixed part, and the focusing coil is fixed to the lens holder of the movable part, the driving coil can operate stably within the magnetic field generated by the peripheral driving magnet, making it less susceptible to interference from the magnetic fields of adjacent cameras and nearby metal devices or electromagnetic waves. This reduces magnetic interference between adjacent cameras and results in more stable operation.

[0005] In one embodiment, a protrusion extending outwards is formed on the lens mount, and an annular plate surrounding the lens mount is fixed on the protrusion. The optical axis is perpendicular to the plate, and the focusing coil is formed on the plate. The presence of the protrusion facilitates the fixing of the focusing coil, making its position more stable and less prone to deformation or displacement due to collisions or impacts.

[0006] In one embodiment, a capacitor and two conductive lines are embedded within the lens mount. One end of each of the two conductive lines is electrically connected to both ends of the focusing coil, and the other end is electrically connected to the support portion. The capacitor is also electrically connected to the support portion. The support portion includes a first leaf spring, which comprises four independent and electrically insulated plates, two of which are electrically connected to the two conductive lines, and the other plate is electrically connected to the capacitor. Using a capacitor as the position sensing element simplifies the wiring layout, makes it easier to implement, occupies less space, and facilitates product miniaturization.

[0007] In one embodiment, the movable part further includes an image stabilization bracket surrounding the outer periphery of the lens mount; the driving part further includes a plurality of image stabilization coils fixed on the image stabilization bracket; the plurality of image stabilization coils and the magnet are positioned opposite each other in a direction perpendicular to the optical axis, their winding axes are all perpendicular to the optical axis, and they are located in front of or behind the focusing coil. Since the driving magnet is located in the fixed part, and the image stabilization coils are fixed inside the magnet, the driving coils can operate stably within the magnetic field generated by the peripheral driving magnet, and are less susceptible to interference from the magnetic fields of adjacent cameras and the magnetic fields or electromagnetic waves of nearby metal devices. This reduces magnetic interference between adjacent cameras, resulting in more stable operation.

[0008] In one implementation, a second capacitor element is embedded within the image stabilization bracket. The support portion includes a first leaf spring, which comprises four independent and electrically insulated plates, one of which is electrically connected to the second capacitor element. The power supply circuit is simple, and the capacitor element does not require separate internal space within the lens drive device, facilitating miniaturization.

[0009] In one implementation, when the number of magnets is n, the focusing coil includes n first sides that are spaced apart from the corresponding magnets in a direction parallel to the optical axis, and n second sides that connect adjacent first sides. When viewed parallel to the optical axis, the angle between the routing direction of the portion of the second side opposite to the image stabilization coil and the routing direction of the corresponding image stabilization coil is 45°-90°. This prevents mutual magnetic interference between the focusing coil and the image stabilization coil.

[0010] In one embodiment, the support portion includes a second leaf spring and at least eight linear springs. The second leaf spring includes a fixed portion connected to the anti-shake bracket, a fixed portion connected to the linear springs, and an elastic portion connecting the two fixed portions. At least a portion of the second leaf spring and the at least eight linear springs serve as conductive paths for the plurality of anti-shake coils. By using the second leaf spring and linear springs as conductive paths, the internal wiring of the motor is simplified, reducing the likelihood of circuit failures.

[0011] In one embodiment, the lens driving device further includes multiple second magnets fixed to the fixing part. The second magnets are located behind or in front of the focusing coil and are positioned opposite the focusing coil in a direction parallel to the optical axis. The two sets of magnets cooperate to increase the driving force of the motor, enabling the motor to drive larger lenses.

[0012] The present invention also provides a camera that includes the lens driving device described above.

[0013] The present invention also provides an electronic device comprising a camera as described above.

[0014] In this invention, the driving magnet for the lens drive device is disposed in the fixed part, while the focusing coil is fixed to the movable part, the lens mount, and the image stabilization bracket. This allows the driving coil to operate stably within the magnetic field generated by the peripheral driving magnet, making it less susceptible to interference from the magnetic fields of adjacent cameras and nearby metal devices or electromagnetic waves. This reduces magnetic interference between adjacent cameras, resulting in more stable operation. Furthermore, by positioning the focusing coil in front of or behind the magnet, the tilt angle of the lens mount can be reduced when the movable part moves perpendicular to the optical axis, thus also reducing the overall footprint of multiple cameras. Attached Figure Description

[0015] Figure 1 This is an exploded view of the lens driving device in Embodiment 1.

[0016] Figure 2 for Figure 1 A three-dimensional view of part of the structure of the lens drive device.

[0017] Figure 3 for Figure 3 A side view of a portion of the structure of the lens drive mechanism.

[0018] Figure 4 for Figure 3 A three-dimensional view of the focusing coil of the lens drive mechanism.

[0019] Figure 5 for Figure 1 Rear view of a portion of the structure of the lens drive mechanism.

[0020] Figure 6 This is a perspective view of the front leaf spring of the lens driving device in Embodiment 1.

[0021] Figure 7 This is a perspective view of the lens mount of the lens driving device in Embodiment 1.

[0022] Figure 8 This is a perspective view of the lens mount and the embedded components of the image stabilization bracket of the lens driving device in Embodiment 1.

[0023] Figure 9 This is an exploded view of the lens driving device in Embodiment 2.

[0024] Figure 10 This is a perspective view of the drive unit of the lens drive device in Embodiment 2.

[0025] Figure 11 for Figure 10 Side view of the drive unit. Detailed Implementation

[0026] The lens driving device, camera, and electronic device of the present invention will be described in further detail below with reference to specific embodiments and accompanying drawings.

[0027] The electronic device of the present invention is an electronic device with a camera, such as, but not limited to, mobile phones, tablet computers, laptops, smartwatches, fitness trackers, etc. The camera may have both focusing and image stabilization functions, or only focusing function. The camera has a lens, a lens driving device, and an image sensor module. The lens driving device drives the lens to move, achieving automatic focusing and / or image stabilization, so that the image sensor module can output clear images or videos.

[0028] For ease of description, a spatial rectangular coordinate system XYZ is defined. The optical axis of the lens of the lens driving device of the present invention is parallel to the Z-axis of the coordinate system. The object being photographed is defined as being in front of the lens driving device, that is, in front of the Z-axis direction (+Z direction). In the components mentioned below, the end / surface located in the +Z direction is referred to as the front end / front surface of the component, and the end / surface located in the -Z direction is referred to as the rear end / rear surface of the component, etc.

[0029] Example 1:

[0030] Please refer to Figure 1 As shown in Embodiment 1, the lens driving device of the present invention is a VCM (Voice Coil Motor) type motor with OIS function, which mainly includes a lens mount 10, an image stabilization bracket 20, a support part 30, a fixing part 40, and a driving part 50.

[0031] The lens mount 10 and the image stabilization bracket 20 are movable parts of the lens drive mechanism. The lens mount 10 is used to fix the lens (not shown) and the focusing coil 51 of the drive unit 50 (see figure). Figures 5-7The image stabilization bracket 20 has a through hole in its middle for accommodating the lens. The image stabilization coil 52 of the drive unit 50 is fixed in place, and a through hole in its middle allows the lens mount 10 to pass through. That is, the lens mount 10 is located inside the image stabilization bracket 20, and the image stabilization bracket 20 is fitted around the outer periphery of the lens mount 10. The fixing part 40 is the housing of the lens drive device, which includes an upper shell 41 and a base 42. The upper shell 41 is fastened to the base 42 to form a housing that accommodates the lens mount 10, the image stabilization bracket 20, the support part 30, and the drive unit 50. Both the upper shell 41 and the base 42 have light-transmitting holes.

[0032] The drive unit 50 is used to drive the lens mount 10 to move relative to the image stabilization bracket 20 along the optical axis of the lens to achieve autofocus; it is also used to drive the image stabilization bracket 20 to move relative to the fixed part in a direction perpendicular to the optical axis to achieve optical image stabilization. In addition to the focusing coil 51 and the image stabilization coil 52 mentioned above, the drive unit 50 also includes multiple magnets 53 uniformly or symmetrically fixed inside the housing, in this embodiment, on the inner wall of the upper housing 41. The focusing coil 51 is wound around the optical axis on the outer periphery of the lens mount 10 and located behind the magnets 53 (in the -Z axis direction). That is, the focusing coil 51 and the magnets 53 are positioned opposite each other in a direction parallel to the Z-axis (optical axis), and their winding axes are substantially coincident with the optical axis.

[0033] The number of magnets 53 can be the same as or less than the number of image stabilization coils 52, and they can be in a one-to-one or one-to-many configuration. In a direction perpendicular to the optical axis, the image stabilization coils 52 and magnets 53 are positioned opposite each other with a gap. The winding axis of the image stabilization coils 52 is perpendicular to the optical axis and is closer to the front of the optical axis (+Z axis direction) than the focusing coil 51. In this embodiment, the magnets 53 are cuboids, and their outer surfaces are all plated with a conductive metal layer. In this embodiment, the number of magnets 53 and image stabilization coils 52 is 4. Opposite groups of image stabilization coils 52 are connected in series. The magnetic poles of the multiple magnets 53 facing the image stabilization coils 52 have the same polarity. To facilitate the assembly and fixation of the image stabilization coils 52, all image stabilization coils 52 are fixed on a flexible circuit board 521, and conductive lines can be embedded within the image stabilization bracket 20. The flexible circuit board 521 is soldered to pads exposed on the surface of the image stabilization bracket 20.

[0034] Please also refer to Figure 2 and Figure 3During operation, when focusing is required, the focusing coil 51 is energized. The energized focusing coil 51 is located within the magnetic field of the four magnets 53. According to Lawrence's principle, the force on the focusing coil 51 is parallel to the optical axis, thus causing the lens mount 10 to move relative to the fixed part 40 along the optical axis. When image stabilization is needed, a corresponding current is applied to the two sets of image stabilization coils 52. According to Lawrence's principle, the force on the image stabilization coils 52 is perpendicular to the optical axis, thus causing the image stabilization bracket 20 to move relative to the fixed part 40 in a direction perpendicular to the optical axis.

[0035] To achieve precise control of focusing and image stabilization functions, the lens drive device in this embodiment further includes a detection component for detecting the positions of the lens mount 10 and the image stabilization bracket 20. The first detection component for detecting the position of the lens mount 10 relative to the image stabilization bracket 20 includes a metal component (as a capacitor element) made of conductive material embedded within the lens mount 10, see... Figure 8 The metal component 61 includes a metal sheet 611 whose plane is substantially parallel to the optical axis (Z-axis) and a conductive line 612 extending from the metal sheet 611. The end of the conductive line may be exposed from the upper end or outer wall of the lens mount 10, or electrically connected to a pad on the upper end or outer wall of the lens mount 10. The first detection assembly also includes a metal component 62 (as a second capacitor element) made of conductive material embedded in the image stabilization bracket 20. The metal component 62 has a similar structure to the metal component 61, including a metal sheet 621 whose plane is substantially parallel to the optical axis (Z-axis) and a conductive line 622 extending from the metal sheet 621. The end of the conductive line may be exposed from the upper end or outer wall of the image stabilization bracket 20, or electrically connected to a pad on the upper end or outer wall of the image stabilization bracket 20. When the two metal components 61 and 62 are energized, they form a capacitor, and the capacitance between them changes when the lens mount 10 moves relative to the image stabilization bracket 20. However, regardless of whether the coil is energized or not, at least a portion of the metal sheets 611 and 612 will overlap in the direction perpendicular to the optical axis, and as the lens mount 10 moves (in the process of autofocus), the area of ​​overlap between the two should change regularly.

[0036] Thus, the drive unit 50 can calculate the corresponding capacitance value based on the output signal of the first detection component, and drive the lens mount 10 to move a certain distance along the optical axis of the lens according to the capacitance value, thereby achieving closed-loop control and more precise control. The lens mount 10 and the image stabilization bracket 20 are made of non-conductive material, preferably plastic. The metal components 61 and 62 can be embedded in the lens mount 10 and the image stabilization bracket 20 by injection molding, which is easy to industrialize. Moreover, the metal components 61 and 62 are metal sheets, which can be made very thin and light, and can achieve position detection without increasing the radial size of the lens drive device, making it easy to miniaturize.

[0037] In addition, two conductive lines 63 are embedded in the lens holder 10. One end of each conductive line 63 is electrically connected to both ends of the focusing coil 51, and the other end can be exposed from the upper end or outer wall of the lens holder 10, or electrically connected to the solder pads on the upper end or outer wall of the lens holder 10.

[0038] To prevent interference between the focusing coil 51 and the image stabilization coil 52, the focusing coil 51 should avoid being directly opposite the image stabilization coil 52 in the direction of the optical axis. Even if they need to be directly opposite each other, their wiring directions (the same as the current direction when energized) should be perpendicular to each other or at an angle of 45°-90°. Thus, the focusing coil 51 should be located away from the lens mount 10. To fix and support the focusing coil 51, a boss 11 extending outwards is formed on the lens mount 10. A ring-shaped plate 12, surrounding the lens mount and perpendicular to the optical axis, is fixed on the boss 11. The focusing coil 51 is formed on the plate 12. In this embodiment, the plate 12 is a circuit board. The focusing coil 51 can be a hollow coil formed on the circuit board 12 by etching, or a hollow coil pre-wound with copper wire and then soldered onto the circuit board 12. Figure 4 As shown, when the number of magnets is n (4 in this embodiment), the focusing coil 51 includes n first sides 511 that are spaced apart from the corresponding magnets in a direction parallel to the optical axis, and n second sides 512 that connect adjacent first sides 511. When viewed in a direction parallel to the optical axis, the angle between the routing direction of the portion of the second side 512 that is directly opposite to the image stabilization coil 52 and the routing direction of the corresponding image stabilization coil 52 is 45°-90° (90° in this embodiment, so that the image stabilization and focusing coils have minimal mutual influence).

[0039] The second detection component for detecting the position of the image stabilization bracket 20 relative to the fixed part 40 includes an integrated circuit 64 disposed inside or next to the image stabilization coil 52, such as a drive circuit integrating a Hall element, magnetoresistive element, or magnetocapacitive element. When the image stabilization bracket 20 moves, the integrated circuit 64 is located at different positions in the magnetic field generated by the opposing magnet 53, thereby determining the specific position of the image stabilization bracket 20 by detecting the magnetic field strength. This enables closed-loop control of image stabilization, resulting in more precise control. Only one magnetic field detection element is needed for each group of image stabilization coils.

[0040] The two sets of image stabilization coils 52 utilize two integrated circuits 64 with integrated position sensing elements. Each integrated circuit 64 includes an access voltage pin VCC, a common connection pin VSS, a data pin SDA, and a control pin SCL. By making the access voltage pin VCC and the common connection pin VSS of the two integrated circuits 64 collinear, and by making the data pin SDA and the control pin SCL anticollinear (thus, the control signals of the two sets of image stabilization coils 52 can be sent out intermittently, that is, at any given time, only one set of image stabilization coils is controlled), the power supply lines that originally required eight paths can be reduced to four paths. Therefore, the focusing and image stabilization circuit of this invention requires only eight power supply paths in total.

[0041] The support portion 30 connects the fixing portion 50, the lens mount 10, and the image stabilization bracket 20, and allows the lens mount 10 to move relative to the image stabilization bracket 20 along the optical axis, and allows the image stabilization bracket 20, carrying the lens mount 10, to move relative to the fixing portion 40 in a direction perpendicular to the optical axis. Furthermore, the support portion 30 also serves as the aforementioned eight power supply paths.

[0042] In this embodiment, the support portion 30 includes a first leaf spring 31, a second leaf spring 32, a third leaf spring 33, and a linear spring 34. The first leaf spring 31 and the second leaf spring 32 are made of conductive metal, such as copper leaf springs, while the third leaf spring 33 can be made of conductive or non-conductive material.

[0043] like Figure 1 As shown, the first leaf spring 31 includes four independent and electrically insulated leaf springs 311 and 312. Two leaf springs 311 are electrically connected to two conductive lines, respectively, and the other two leaf springs 312 are electrically connected to metal components 61 and 62, respectively. The four leaf springs 311 and 312 are evenly and centrally symmetrically arranged on the outer periphery of the optical axis. Taking leaf spring 311 as an example, as... Figure 6 As shown, each leaf spring 311 and 312 includes an inner connecting portion 313 for fixed connection with the front end face of the lens mount 10, a first outer connecting portion 314 for fixed connection with the front end face of the image stabilization bracket 20, an elastic portion 315 extending meandering between the inner connecting portion 313 and the first outer connecting portion 314, a second outer connecting portion 316 for connection with the linear spring 34, and an elastic portion 317 connecting the second outer connecting portion 316 and the first outer connecting portion 314.

[0044] There are also four second leaf springs 32, each including a fixing part 321 connected to the front end face of the image stabilization bracket 20, a fixing part 322 connected to the upper end of the linear spring 33, and an elastic part 323 connecting the two fixing parts. The four second leaf springs 32 are electrically connected to the integrated circuit 64 as four conductive paths.

[0045] The third leaf spring 33 does not serve as a conductive path, therefore a one-piece annular leaf spring is used. Its annular inner connecting portion 331 is fixed to the rear end of the lens mount 10. Multiple elastic portions 333 extend from its annular inner connecting portion, and the ends of the elastic portions 333 are connected to the outer connecting portion 332, which is fixed to the rear end of the image stabilization bracket 20. The elastic portions 333 are all connected in a meandering manner between the inner connecting portion 331 and the outer connecting portion 332.

[0046] The eight linear springs 34 are made of conductive metal and serve as conductive paths. The upper ends of four of them are fixed and electrically connected to the four leaf springs 311 and 312 of the first leaf spring, and the upper ends of the other four are fixed and electrically connected to the four leaf springs 32 of the second leaf spring. The lower ends of the eight linear springs 34 are fixedly connected to the base 42 of the fixing part 40. The eight linear springs 34 are arranged in pairs at the four corners of the fixing part.

[0047] The base 42 may also have an embedded conductive circuit for electrically connecting the eight linear springs 34 to the external circuit.

[0048] Thus, the lens drive mechanism of the camera in this embodiment adopts a static magnetic OIS structure. In the X and Y axes perpendicular to the optical axis, the dimensions of the lens drive mechanism are determined by the diameter / width of the lens mount (mainly the lens diameter), the thickness of the image stabilization bracket, the thickness of the magnet, and the clearance for the movement of the image stabilization bracket. In contrast, in the moving magnetic OIS structure, the dimensions of the lens drive mechanism in the X and Y axes perpendicular to the optical axis are determined by the diameter / width of the lens mount (mainly the lens diameter), the thickness of the focusing coil, the thickness of the magnet (magnet bracket), and the clearance for the movement of the magnet bracket. That is, for both OIS structures, the factors determining the dimensions in the X and Y axes are roughly equivalent. However, since the static magnetic OIS structure uses eight linear springs (while the moving magnetic OIS structure only requires four), it can support a relatively heavier movable part, and since a heavier magnet 53 is located in the fixed part 40, this structure can support larger lenses, resulting in better shooting performance.

[0049] When the lens drive mechanism only has a focusing function, that is, when the image stabilization bracket 20 and the image stabilization coil 52 are omitted, the size of the lens drive mechanism in the X and Y axes depends only on the lens diameter and the thickness of the magnet, without considering the thickness of the focusing coil, thus resulting in a smaller size. In this case, the linear spring 33 and the second leaf spring 32 are also omitted, and the outer connecting part of the first leaf spring can be connected to the fixing part.

[0050] In addition, the focusing coil 51 is located directly behind the magnet 53, so the shape of the part opposite to the magnet 53 can be fully matched, and the magnetic field generated by the magnet can be fully utilized. The magnet of the moving magnet type OIS structure is often square, while the focusing coil is often arc-shaped, so the driving force generated by the magnet of the same size will be stronger.

[0051] In the above embodiment, the focusing coil 51 is located behind the magnet 53 and the image stabilization coil 52. It is understood that in other embodiments, the focusing coil may be located in front of the magnet and the image stabilization coil (on the +Z axis side), in which case the working principle and structural advantages are the same as in Embodiment 1.

[0052] In the above embodiment, a boss extends outward from the lens holder to support the circuit board. It is understood that in other embodiments, this boss may be omitted. An annular groove may be formed on the lens holder, into which the circuit board may be inserted, or where the focusing coil may be stably fixed below the magnet.

[0053] In the above embodiments, the metal components 61 and 62, which are capacitor elements, and the conductive lines are embedded in the lens mount and the image stabilization bracket. It can be understood that they can also be fixed to the surface of the lens mount and the image stabilization bracket.

[0054] In the above embodiments, a structure of leaf spring combined with linear spring is used as the support. It is understood that in other embodiments, piezoelectric devices can be used to drive the linear spring.

[0055] Example 2:

[0056] Please refer to Figures 9-11 As shown, the lens driving device of Embodiment 2 is structurally similar to that of Embodiment 1. The main difference is that multiple second magnets 54 are fixed on the base 42. The second magnets 54 and the focusing coil 51 are positioned opposite each other in a direction parallel to the optical axis, that is, the focusing coil 51 is located directly in front of the second magnets 54 (on the +Z axis). This structure can increase the driving force of autofocus and improve the linearity of autofocus.

[0057] In Embodiment 2, the focusing coil 51 is located behind the magnet 53, while the second magnet 54 is fixed on the base 42, located behind the focusing coil 51. It can be understood that when the focusing coil 51 is located in front of the magnet 53, the second magnet 54 should be fixed to the inside of the top plate of the upper shell 41.

[0058] Example 3:

[0059] The lens driving device of Embodiment 3 differs from that of Embodiment 1 in that it only has a focusing function, thus omitting the image stabilization bracket 20, the image stabilization coil 52, the linear spring 33, and the second leaf spring 32. The outer connecting part of the first leaf spring can be connected to the fixing part.

[0060] The lens driving device of Embodiment 3 may also include a second magnet fixed to the inside of the top plate of the base or upper shell, thereby having a greater focusing driving force and improving the linearity of focusing.

[0061] In the description of this invention, it should be understood that terms such as "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0062] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0063] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0064] Although the description of the invention has been given in conjunction with the specific embodiments described above, it will be apparent to those skilled in the art that many substitutions, modifications, and variations can be made based on the foregoing. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.

Claims

1. A lens driving device, comprising: a fixed part; a movable part including a lens seat for fixing a lens and an anti-shake bracket surrounding the lens seat; a support part connecting the fixed part and the movable part and allowing the lens seat to move along an optical axis direction relative to the anti-shake bracket and allowing the anti-shake bracket to move along a direction perpendicular to the optical axis direction relative to the fixed part; and a driving part for driving the lens seat to move along the optical axis direction relative to the anti-shake bracket and for driving the anti-shake bracket to move along the direction perpendicular to the optical axis direction relative to the fixed part; characterized in that the driving part comprises: a plurality of magnets fixed on the fixed part; a focusing coil fixed on the lens seat; and a plurality of anti-shake coils fixed on the anti-shake bracket and spaced apart from the plurality of magnets in a direction perpendicular to the optical axis, and the winding axes of the anti-shake coils are perpendicular to the optical axis; wherein, defining that an object is located in front of the lens driving device, the winding axis of the focusing coil is substantially coincident with the optical axis and is located in one of the front and the back of the magnets and the anti-shake coils; when the number of the magnets is n, the focusing coil comprises n first edges each spaced apart from a corresponding magnet in a direction parallel to the optical axis, and n second edges connecting adjacent first edges; in the direction parallel to the optical axis, the angle between the wire direction of the part of the second edge opposite to the anti-shake coil and the wire direction of the corresponding anti-shake coil is 45°-90°, and the projection of the first edge on a plane perpendicular to the optical axis is located in the projection of the magnet.

2. The lens driving device according to claim 1, wherein A boss extending outwardly from the lens seat is formed, and a ring-shaped plate surrounding the lens seat is fixed on the boss, the optical axis is perpendicular to the plate, and the focusing coil is formed on the plate.

3. The lens driving apparatus according to claim 1 or 2, characterized by, A capacitor element and two conductive lines are embedded in the lens seat, one end of each of the two conductive lines is electrically connected to the two ends of the focusing coil, and the other end of each of the two conductive lines is electrically connected to the support part; the capacitor element is also electrically connected to the support part; the support part comprises a first leaf spring, the first leaf spring comprises four pieces that are independent and electrically insulated, two of which are electrically connected to the two conductive lines, and the other one is electrically connected to the capacitor element.

4. The lens driving device according to claim 1, wherein A second capacitor element is embedded in the anti-shake bracket, and the support part comprises a first leaf spring, the first leaf spring comprises four pieces that are independent and electrically insulated, one of which is electrically connected to the second capacitor element.

5. The lens driving device according to claim 1, wherein The support part comprises a second leaf spring and at least eight straight springs, the second leaf spring comprises a fixed part connected to the anti-shake bracket, a fixed part connected to the straight springs, and an elastic part connected between the two fixed parts; at least part of the second leaf spring and the at least eight straight springs serve as the conductive path of the plurality of anti-shake coils.

6. The lens driving apparatus according to claim 1, wherein A plurality of second magnets fixed on the fixed part are located behind or in front of the focusing coil and spaced apart from the focusing coil in a direction parallel to the optical axis.

7. A camera characterized by, The lens driving device according to any one of claims 1 to 6.

8. An electronic device, comprising: A camera comprising as claimed in claim 7.

Images