Carrier driving device, multi-camera module and electronic equipment

Abstract

The utility model provides a carrier driving device, a multi-camera module and electronic equipment. The carrier driving device comprises a shell, a base, a movable frame, a carrier, an anti-shake driving assembly and a focusing driving assembly, the shell is provided with four side walls; the bottom ends of the side walls are connected with the base; the movable frame is located inside the shell; the carrier is located on the inner side of the movable frame and used for bearing the lens. The anti-shake driving assembly is arranged between the movable frame and the side wall; the anti-shake driving assembly is used for driving the moving frame in the horizontal direction; the focusing driving assembly is arranged between the movable frame and the carrier; the focusing driving assembly comprises a focusing coil, and the focusing coil is fixed on the carrier; a magnet-free area is arranged between the carrier and at least one side wall; at least one side edge of the carrier is positioned in the magnet-free area; a flexible circuit board is laid on the side edge in the magnet-free area. A Hall magnet is fixed to the movable frame, and the flexible circuit board is electrically connected with a Hall sensor. The device is used for reducing the magnetic interference of adjacent carrier driving devices so as to improve the action precision of carriers.

Description

Technical Field

[0001] This utility model relates to the field of camera modules, and more particularly to a carrier driving device, a multi-camera module, and an electronic device. Background Technology

[0002] In related technologies, to ensure sufficient driving force on the carrier, the carrier driving device usually surrounds the carrier with magnets. This can cause magnetic interference between the driving device and the adjacent carrier driving devices. Magnetic interference between camera modules can affect the movement accuracy of their respective carriers, resulting in a decrease in image quality.

[0003] Therefore, there is an urgent need for a carrier driving device, a multi-camera module, and electronic equipment to improve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a carrier driving device, a multi-camera module, and an electronic device. This device is used to reduce magnetic interference between adjacent carrier driving devices, thereby improving the motion accuracy of the carrier.

[0005] In a first aspect, this utility model provides a carrier driving device, comprising: a housing, a base, a movable frame, a carrier, an image stabilization driving component, and a focusing driving component; the housing has four side walls; the bottom end of each side wall is connected to the base; the movable frame is located inside the housing; the carrier is located inside the movable frame and is used to carry a lens; the image stabilization driving component is disposed between the movable frame and the side walls; the image stabilization driving component is used to drive the movable frame in a horizontal direction to perform image stabilization movement; the focusing driving component is disposed between the movable frame and the carrier; the focusing driving component is used to drive the carrier along the optical axis direction to perform focusing movement; the optical axis direction is perpendicular to the horizontal direction; the focusing driving component includes a focusing coil, the focusing... A focus coil is fixed to the carrier, and when energized, the focus coil generates a magnetic force to drive the carrier to focus relative to the moving frame. The image stabilization drive assembly and the focus drive assembly are located between the carrier and at most three sidewalls, so that there is a non-magnetic area between the carrier and at least one sidewall. The carrier includes four sides, at least one of which is located within the non-magnetic area. A flexible circuit board is laid on the side within the non-magnetic area. A Hall magnet is fixed to the moving frame, and a Hall sensor is electrically connected to the flexible circuit board. The Hall sensor is used to detect the position information of the carrier in the optical axis direction and feeds the position information back to the base through the flexible circuit board, so that the control unit connected to the base can control the current on the focus coil in a closed loop.

[0006] Optionally, the Hall sensor is located at the included angle between two adjacent sides of the carrier; the Hall magnet and the Hall sensor are arranged opposite each other, and a gap is provided between the Hall magnet and the Hall sensor.

[0007] Optionally, a conductive connector is embedded within the carrier; the conductive connector is electrically connected to the flexible circuit board, and the flexible circuit board is connected to the pads on the base.

[0008] Optionally, it also includes an upper spring assembly and a lower spring assembly; the upper spring assembly includes four sub-springs, each sub-spring having an inner section, a middle section, and an outer section; the outer section is fixedly connected to the base; the middle section is fixedly connected to the movable frame; the inner section is fixedly connected to the carrier; the lower spring assembly has an outer end and an inner end; the inner end is connected to the carrier; the outer end is connected to the movable frame; the upper spring assembly is used to provide motion anti-torsion for the movable frame.

[0009] Optionally, the image stabilization drive assembly includes image stabilization magnet groups located on up to three directional sides of the moving frame; wherein at least one of the image stabilization magnet groups is a Helbeck array magnet group.

[0010] Optionally, the image stabilization drive assembly includes a Helbeck array magnet group and two multi-stage magnets;

[0011] The two multi-level magnets are located at opposite ends of the movable frame; the multi-level magnets are configured as multi-level magnetized magnets or multi-level superimposed magnets.

[0012] Optionally, the anti-shake drive component includes two Hellbeck array magnet groups; the two Hellbeck array magnet groups are located at adjacent ends of the moving frame, respectively.

[0013] Optionally, the Helbeck array magnet group is formed by stacking a first magnet, a second magnet, and a third magnet, with the second magnet located between the first magnet and the third magnet; the magnetization direction of the first magnet is opposite to that of the third magnet; and the magnetization direction of the first magnet is perpendicular to that of the second magnet.

[0014] Optionally, the anti-shake drive assembly further includes an anti-shake coil connected to the base; the anti-shake coil and the anti-shake magnet group are arranged in a one-to-one correspondence; when the current loaded on the anti-shake coil changes, it is used to drive the anti-shake magnet group to move the moving frame in the horizontal direction.

[0015] Optionally, at least a portion of the movable frame is made of metal.

[0016] Secondly, the present invention provides a multi-camera module, including a first carrier driving device and a second carrier driving device arranged adjacent to each other; the first carrier driving device is the carrier driving device described in any one of the first aspects; the non-magnetic area in the first carrier driving device faces the second carrier driving device.

[0017] Thirdly, this utility model provides an electronic device, including a processing unit and at least one carrier driving device as described in the first aspect;

[0018] The processing unit is electrically connected to the carrier driving device and is used to control the operation of the carrier driving device, including image stabilization and autofocus functions.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows: by laying a flexible circuit board on the side in the non-magnetic area, the image stabilization drive component and the focus drive component are located between the carrier and at most three side walls, so that there is a non-magnetic area between the carrier and at least one side wall, the magnetic interference of the carrier drive device to the adjacent carrier drive device is minimized, the movement accuracy of each carrier is ensured, and the imaging quality is improved. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a carrier driving device in related technologies;

[0021] Figure 2 An exploded structural diagram of a carrier driving device provided by this utility model;

[0022] Figure 3 A schematic diagram of the assembly structure of a multi-level magnet, a focusing coil, a flexible circuit board and a carrier provided by this utility model;

[0023] Figure 4 A schematic diagram of the assembly structure of a focusing coil and a flexible circuit board provided by this utility model;

[0024] Figure 5 A schematic diagram of the electrical connection relationship of an electronic device provided by this utility model;

[0025] Figure 6 A schematic diagram of the installation structure of an upper spring assembly and a lower spring assembly provided by this utility model;

[0026] Figure 7 A schematic diagram of the installation structure of a metal frame and a shake-resistant drive assembly provided by this utility model;

[0027] Figure 8 A schematic diagram of the installation structure of a first sensor and a second sensor provided by this utility model;

[0028] Figure 9 This is a structural schematic diagram of a multi-camera module provided by this utility model;

[0029] Figure 10 This is a schematic diagram of the electrical connection relationship of an electronic device provided by this utility model.

[0030] Explanation of the reference numerals in the figure:

[0031] 1. Outer shell; 101. Magnetic sheet; 11. Side wall; 2. Base; 21. Support column; 22. Groove; 3. Moving frame; 31. Metal frame; 32. Recess; 4. Ball component;

[0032] 51. Helbeck array magnet group; 511. First magnet; 512. Second magnet; 513. Third magnet; 52. Multi-stage magnet; 521. Upper magnet section; 522. Lower magnet section; 531. First image stabilization coil; 532. Second image stabilization coil; 533. Third image stabilization coil; 54. Focusing coil; 6. Processing unit;

[0033] 7. Carrier; 71. Sub-spring; 711. Inner section; 712. Middle section; 713. Outer section; 72. Lower spring assembly; 721. Inner end; 722. Outer end; 73. Limiting part; 74. Conductive connector; 801. First sensor; 802. Second sensor; 811. Hall sensor; 812. Hall magnet;

[0034] 9. Non-magnetic area; 91. Flexible circuit board; 92. Winding post; 93. Pin; 94. Solder joint; 95. Notch. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Unless otherwise defined, the technical or scientific terms used herein should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "comprising" and similar expressions used herein mean that the element or object preceding the word covers the element or object listed following the word and its equivalents, but does not exclude other elements or objects.

[0036] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0037] In response to the problems existing in the current technology, such as Figure 2 As shown, the first embodiment provides a carrier driving device, including: a housing 1, a base 2, a moving frame 3, a carrier 7, an image stabilization driving component, and a focusing driving component; the housing 1 has four side walls 11; the bottom end of the side walls 11 is connected to the base 2; the moving frame 3 is located inside the housing 1; the carrier 7 is located inside the moving frame 3 and is used to carry a lens; the image stabilization driving component is disposed between the moving frame 3 and the side walls 11; the image stabilization driving component is used to drive the moving frame 3 in the horizontal direction to perform image stabilization movement; the focusing driving component is disposed between the moving frame 3 and the carrier 7; the focusing driving component is used to drive the carrier 7 along the optical axis direction to perform focusing movement; the optical axis direction is perpendicular to the horizontal direction; the image stabilization driving component and the focusing driving component are located between the carrier 7 and at least three side walls 11, so that there is a non-magnetic region 9 between the carrier 7 and at least one side wall 11.

[0038] In some specific embodiments, the focusing motion is set as the carrier 7 moving relative to the moving frame along the optical axis; the image stabilization motion is set as the carrier 7 and the moving frame moving together along the horizontal direction.

[0039] In other specific embodiments, the optical axis is along the Z direction, the X and Y directions are the horizontal directions, and the X, Y, and Z directions are perpendicular to each other.

[0040] In some specific embodiments, the four sidewalls 11 are all arranged parallel to the optical axis direction. In some examples, the four sidewalls 11 include a first wall, a second wall, a third wall, and a fourth wall connected end to end, with the first and third walls parallel to the X direction and the second and fourth walls parallel to the Y direction.

[0041] like Figure 3 As shown, in some embodiments, the carrier 7 includes four sides corresponding to the four sidewalls 11; at least one side is located within the non-magnetic region 9; and a flexible circuit board 91 is laid on the side within the non-magnetic region 9.

[0042] like Figure 4 As shown, in some specific embodiments, the flexible circuit board 91 is provided with a notch 95; the carrier 7 is connected with a protruding limiting part 73; the limiting part 73 cooperates with the notch 95 to limit the flexible circuit board 91 to the carrier 7.

[0043] In some embodiments, the focusing drive assembly includes a focusing coil 54 fixed to the carrier 7, the focusing coil 54 generating a magnetic force when energized to drive the carrier 7 to perform focusing motion relative to the moving frame.

[0044] In some specific embodiments, the focusing coil 54 is axially aligned with at least one image stabilization magnet group; when the current applied to the focusing coil 54 changes, it is used to drive the carrier 7 to move along the optical axis.

[0045] It is worth noting that in this embodiment, by aligning the focusing coil 54 axially with at least one image stabilization magnet group, the image stabilization drive assembly and the focusing drive assembly share the same image stabilization magnet group, which helps reduce the number of components, lowers assembly difficulty, and also facilitates the miniaturization of the carrier drive device.

[0046] In some examples, the winding axis of the focusing coil 54 is horizontal. There are two focusing coils 54, which can be connected in parallel or in series. The focusing coils 54 are located between the movable frame 3 and the multi-stage magnet 52.

[0047] In some specific embodiments, the flexible circuit board 91 is provided with solder joints 94, which are electrically connected to the focusing coil 54. In some examples, the number of solder joints 94 is set to 2, and the number of focusing coils 54 is set to 2; the two focusing coils 54 are electrically connected to the two solder joints 94 in a one-to-one correspondence.

[0048] In other specific embodiments, the carrier 7 is also connected to a winding post 92, and the end of the focusing coil 54 is wound around the winding post 92 to achieve positioning relative to the solder joint 94, which helps to reduce the stress on the solder joint 94 and improve the reliability of the electrical connection.

[0049] like Figure 5 As shown, in some embodiments, a conductive connector 74 is embedded in the carrier 7; the conductive connector 74 is electrically connected to the flexible circuit board 91, and the flexible circuit board 91 is connected to the pads on the base 2; a detection unit is also provided between the moving frame 3 and the carrier 7; the detection unit is connected to the flexible circuit board 91; the detection unit is used to detect the relative position between the carrier 7 and the moving frame 3.

[0050] In some specific embodiments, the conductive connector 74 is connected to the flexible circuit board 91 via pins 93. In some examples, the number of pins 93 is 4. In other examples, the number of pins 93 is 6.

[0051] In other embodiments, the detection unit includes a Hall sensor 811 and a Hall magnet 812; the Hall magnet 812 is fixed to the movable frame 3, and the Hall sensor 811 is electrically connected to the flexible circuit board 91; the Hall sensor 811 is used to detect the position information of the carrier 7 in the optical axis direction, and feeds the position information back to the base 2 through the flexible circuit board 91, so that the control unit connected to the base 2 can control the current on the focusing coil 54 in a closed loop.

[0052] In some specific embodiments, the Hall sensor 811 is located at the included angle of two adjacent sides of the carrier 7; the Hall magnet 812 and the Hall sensor 811 are arranged opposite to each other, and a gap is provided between the Hall magnet 812 and the Hall sensor 811.

[0053] In other specific embodiments, the included angle between two adjacent sides is chamfered to accommodate the Hall sensor 811.

[0054] like Figure 6 and Figure 2 As shown, in some embodiments, an upper spring assembly and a lower spring assembly 72 are also included; the upper spring assembly includes four sub-springs 71, each sub-spring 71 having an inner section 711, a middle section 712, and an outer section 713; the outer section 713 is fixedly connected to the base 2; the middle section 712 is fixedly connected to the movable frame 3; the inner section 711 is fixedly connected to the carrier 7; the lower spring assembly 72 has an outer end 722 and an inner end 721; the inner end 721 is connected to the carrier 7; the outer end 722 is connected to the movable frame 3; the upper spring assembly is used to provide motion anti-torsion for the movable frame 3.

[0055] In some specific embodiments, the distance from the inner segment 711 to the center of the carrier 7 is D1, the distance from the middle segment 712 to the center of the carrier 7 is D1, and the distance from the outer segment 713 to the center of the carrier 7 is D3, satisfying 0. <D1<D2<D3。

[0056] In other specific embodiments, the top of the base 2 is configured as a support column 21, the top of the support column 21 is connected to the outer segment 713, and the bottom of the support column 21 is connected to the outer end 722.

[0057] In some specific embodiments, the support column 21 has an embedded circuit for electrically connecting the outer section 713 of the sub-spring 71, and the inner section 711 of the sub-spring 71 is connected to the conductive connector 74 in the carrier 7. The current on the base 2 flows sequentially through the sub-spring 71, the conductive connector 74, the pin 93, and the flexible circuit board 91 to establish an electrical path from the base 2 to the flexible circuit board 91.

[0058] In some embodiments, the base 2 is further provided with a roller groove 22, and a ball member 4 is provided in the roller groove 22. The top end of the ball member 4 contacts the bottom end face of the movable frame 3. The ball member 4 is used to support the movable frame 3 and reduce the friction between the movable frame 3 and the base 2.

[0059] In some embodiments, at least a portion of the movable frame 3 is made of metal. In some specific embodiments, the movable frame 3 has an embedded metal frame 31 to improve structural reliability.

[0060] Specifically, the metal frame 31 covers the outside of the Helbeck array magnet group 51 and the multi-level magnet 52 to reinforce the installation of the magnets.

[0061] In some embodiments, the movable frame 3 has a groove for weight reduction so as to balance the center of gravity of the movable frame 3.

[0062] In some embodiments, the image stabilization drive assembly includes image stabilization magnet groups located on up to three directional sides of the moving frame 3; wherein at least one of the image stabilization magnet groups is a Helbeck array magnet group 51.

[0063] In some specific embodiments, the moving frame 3 has four horizontal sides. The image stabilization drive assembly includes image stabilization magnet assemblies located on three horizontal sides of the moving frame 3. In other specific embodiments, the image stabilization drive assembly includes image stabilization magnet assemblies located on two horizontal sides of the moving frame 3.

[0064] like Figure 7 and Figure 2 As shown, in some embodiments, the anti-shake drive component includes a Helbeck array magnet group 51 and two multi-level magnets 52; the two multi-level magnets 52 are respectively located at opposite ends of the moving frame 3; the multi-level magnets 52 are configured as multi-level magnetized magnets or multi-level superimposed magnets. The multi-level magnets 52 include an upper magnet portion 521 and a lower magnet portion 522.

[0065] It is worth noting that by employing the Hellbeck array magnet 51, this embodiment can achieve a greater magnetic field strength within a limited space, which is sufficient to overcome friction and improve the stability of the moving frame 3 in the horizontal direction. Thanks to the sufficiently dense magnetic field strength, the side of the moving frame 3 away from the Hellbeck array magnet 51 does not need to be equipped with a magnet, thereby avoiding magnetic interference on the side of the moving frame 3 without a magnet and improving the assembly compatibility of the carrier drive device.

[0066] In some specific embodiments, the upper magnet portion 521 and the lower magnet portion 522 of the multi-stage magnetized magnet are made from the same magnet. A non-magnetic region exists between the upper magnet portion 521 and the lower magnet portion 522. The multi-stage magnetized magnet in this embodiment is easy to assemble. The multi-stage magnetized magnet is manufactured by applying magnetic fields of different directions or intensities to different regions of the same magnet using a multi-stage magnetizing machine.

[0067] In other specific embodiments, the upper magnet portion 521 and the lower magnet portion 522 of the multi-level stacked magnet are different magnets. Since the upper magnet portion 521 and the lower magnet portion 522 of the multi-level stacked magnet in this embodiment are different magnets, this means they can be designed, manufactured, and adjusted independently. The magnetic field strength and distribution of each layer can be optimized according to specific needs to achieve optimal performance.

[0068] In some examples, the N pole of the upper magnet portion 521 faces the carrier 7, and the S pole of the lower magnet portion 522 faces the carrier 7. The upper magnet portion 521 and the lower magnet portion 522 are arranged along the optical axis.

[0069] In other examples, the Hellbeck array magnet group 51 is used to drive the moving frame 3 to move along the X direction. Two multi-stage magnets 52 are used to drive the moving frame 3 to move along the Y direction. In other examples, the Hellbeck array magnet group 51 is used to drive the moving frame 3 to move along the Y direction. Two multi-stage magnets 52 are used to drive the moving frame 3 to move along the X direction.

[0070] In some embodiments, the anti-shake drive assembly includes two Hellbeck array magnet groups 51; the two Hellbeck array magnet groups 51 are respectively located at adjacent ends of the moving frame 3.

[0071] In some examples, one of the Hellbeck array magnet groups 51 is used to drive the moving frame 3 to move along the X direction. Another Hellbeck array magnet group 51 is used to drive the moving frame 3 to move along the Y direction.

[0072] It is worth noting that by utilizing two Hellbeck array magnet groups 51 to achieve independent and efficient driving in both the X and Y directions, the stability and response speed of the moving frame are ensured. Since the two sides of the moving frame 3 furthest from the Hellbeck array magnets 51 do not require magnets, magnetic interference is avoided on the sides of the moving frame 3 without magnets, further improving the assembly compatibility of the carrier driving device.

[0073] In some specific embodiments, the Helbeck array magnet group 51 is formed by stacking a first magnet 511, a second magnet 512, and a third magnet 513, with the second magnet 512 located between the first magnet 511 and the third magnet 513; the magnetization direction of the first magnet 511 is opposite to the magnetization direction of the third magnet 513; and the magnetization direction of the first magnet 511 is perpendicular to the magnetization direction of the second magnet 512.

[0074] In some examples, the S pole of the first magnet 511 faces the base 2, the S pole of the second magnet 512 faces the carrier 7, and the N pole of the third magnet 513 faces the base 2.

[0075] In some embodiments, the anti-shake drive assembly further includes an anti-shake coil connected to the base 2; the anti-shake coil and the anti-shake magnet group are arranged in a one-to-one correspondence; when the current loaded on the anti-shake coil changes, it is used to drive the anti-shake magnet group to move the moving frame 3 in the horizontal direction.

[0076] In some specific embodiments, when the image stabilization drive assembly includes two Hellbeck array magnet groups 51, the number of image stabilization coils is 2, which are respectively disposed on the bottom side of the two Hellbeck array magnet groups 51.

[0077] In other specific embodiments, when the image stabilization drive assembly includes a Hellbeck array magnet group 51 and two multi-stage magnets 52, the number of image stabilization coils is three, specifically a first image stabilization coil 531, a second image stabilization coil 532, and a third image stabilization coil 533. The second image stabilization coil 532 is disposed on the bottom side of the Hellbeck array magnet group 51. The first image stabilization coil 531 and the third image stabilization coil 533 are respectively disposed on the bottom sides of the two multi-stage magnets 52.

[0078] It is worth noting that the winding axis of the stabilization coils is all along the optical axis. Through the cooperation of the stabilization coils and the stabilization magnet assembly, precise position control of the moving frame is achieved, ensuring a highly efficient stabilization effect.

[0079] like Figure 2 As shown, in some embodiments, a magnetic conductive sheet 101 is also included, which is attached to the base 2. The magnetic conductive sheet 101 interacts with the anti-shake magnet assembly to ensure that the moving frame 3 continuously rests against the top of the ball component 4. The moving frame 3 is provided with a clearance groove 304. When the moving frame 3 moves relative to the outer shell 1, the clearance groove 304 is used to avoid the magnetic conductive sheet 101. In this embodiment, by setting the magnetic conductive sheet 101 to interact with the driving magnet, the moving frame 3 continuously rests against the ball component 4, thus preventing the ball component 4 from detaching.

[0080] In some specific embodiments, the number of magnetic sheets 101 is the same as the number of anti-shake drive components.

[0081] Under the action of the magnetic conductive sheet 101, the resultant force provided by the anti-shake magnet assembly to the moving frame 3 passes through the center of the polygon formed by connecting the centers of at least three of the spherical components 4. This arrangement ensures that the moving frame 3 is stably supported on the spherical components 4 in all orientations and also helps to balance the force on the spherical components 4.

[0082] In some embodiments, an upper spring assembly and a lower spring assembly 72 are also included; the upper spring assembly has an inner end and an outer end; the outer end is fixed to the housing 1; the inner end is fixed to the movable frame 3; the lower spring assembly 72 includes at least two mutually separated lower spring plates; the lower spring plates have a first end and a second end; the first end is fixed to the housing 1; the second end is fixed to the movable frame 3; both the upper spring assembly and the lower spring assembly 72 are used to provide cushioning for the movable frame 3.

[0083] In some embodiments, the number of focusing coils 54 is 2; the two focusing coils 54 are connected in series or in parallel; the two focusing coils 54 are electrically connected to the second ends of different lower spring plates respectively.

[0084] When the two focusing coils 54 are connected in series, the first lower spring plate 721 and the second lower spring plate 722 are connected to the same circuit. When the two focusing coils 54 are connected in parallel, the first lower spring plate 721 and the second lower spring plate 722 are connected to different circuits.

[0085] The above embodiment enhances the total electromagnetic force by connecting two focusing coils 54 in series, making it suitable for applications requiring greater driving force. Connecting the two focusing coils 54 in parallel reduces the total resistance and increases the current, enabling faster generation of electromagnetic force, making it suitable for applications requiring rapid response. Whether connected in series or parallel, the two coils can operate synchronously or independently, improving system stability and flexibility.

[0086] like Figure 8 As shown, in some specific embodiments, a first sensor 801 and a second sensor 802 are mounted on the base. The first sensor 801 is electrically connected to a first stabilization coil 531 and is used to detect the position of the carrier 7 in the X direction based on the current applied to the first stabilization coil 531. The second sensor 802 is electrically connected to a second stabilization coil 532 and is used to detect the position of the carrier 7 in the Y direction based on the current applied to the second stabilization coil 532.

[0087] In some examples, the multi-camera module can be integrated into a smartphone camera, digital camera, surveillance camera, or industrial robot vision system.

[0088] This embodiment uses a first sensor 801, a second sensor 802, and a Hall sensor 811 to detect the position of the carrier in the X, Y, and Z directions, respectively, ensuring high-precision positioning and control. The real-time position information provided by the sensors allows the system to make dynamic adjustments, improving its adaptability and response speed. Multi-axis control and real-time feedback mechanisms ensure the stability of the carrier in all directions. By directly connecting the sensors to the corresponding image stabilization and focusing coils, the design of the control system is simplified, reducing complex wiring and interfaces.

[0089] like Figure 9 As shown, the second embodiment provides a multi-camera module, including a first carrier driving device and a second carrier driving device arranged adjacent to each other; the first carrier driving device is the carrier driving device described in any one of the above embodiments; the non-magnetic area 9 in the first carrier driving device faces the second carrier driving device.

[0090] In some embodiments, both the first carrier driving device and the second carrier driving device are configured as the carrier driving devices described in the above embodiments, with the non-magnetic region 9 of the first carrier driving device and the non-magnetic region 9 of the second carrier driving device being arranged opposite to each other and close to each other.

[0091] like Figure 10 As shown, the third embodiment provides an electronic device, including a processing unit 6 and at least one carrier driving device as described in any of the above embodiments; the processing unit 6 is electrically connected to the carrier driving device and is used to control the operation of the carrier driving device, including image stabilization and autofocus functions.

[0092] In some specific embodiments, the processing unit 6 is electrically connected to the image stabilization coil and the focusing coil 54. In other specific embodiments, the processing unit 6 is also electrically connected to the first sensor 801, the second sensor 802, and the Hall sensor 811. In some examples, the processing unit 6 is a processor.

[0093] The processor in this embodiment can be an integrated circuit chip. In implementation, the processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices. Besides image stabilization and focusing, the processor can also integrate other functions, such as image processing and video encoding, to further improve the overall performance of the device.

[0094] In some embodiments, multiple carrier drive devices work together to achieve precise image stabilization and autofocus over a wider range, ensuring uniform image stabilization across the entire imaging area. Independent adjustments can be made based on the specific conditions of different areas (such as object speed, lighting conditions, etc.) to improve local focus accuracy and image stabilization performance.

[0095] Multiple carrier drive units can support higher resolution holographic imaging systems, with each unit responsible for a small portion of the image area. This allows for precise image stabilization and focus adjustments for each small area, ensuring high resolution and sharpness of the entire holographic image. Multiple units can operate simultaneously or at preset time intervals, accelerating image acquisition and processing, making it suitable for high-speed holographic photography scenarios.

[0096] By deploying carrier-driven devices at different locations and angles, shooting and focusing can be performed from multiple perspectives. This enables multi-angle and multi-view holographic shooting, suitable for constructing 3D holographic models or panoramic holographic images.

[0097] In some examples, the electronic device is a smartphone, digital camera, security surveillance camera, medical imaging equipment, industrial robot vision system, virtual reality (VR) / augmented reality (AR) device, or drone camera.

[0098] Although the embodiments of this utility model have been described in detail above, it will be apparent to those skilled in the art that various modifications and variations can be made to these embodiments. However, it should be understood that such modifications and variations fall within the scope and spirit of this utility model as described in the claims. Moreover, the utility model described herein may have other embodiments and can be implemented or realized in various ways.

Claims

1. A carrier driving device, characterized in that, include: Housing, base, moving frame, carrier, image stabilization drive assembly, and focus drive assembly; The outer casing has four side walls; the bottom ends of the side walls are connected to the base; The movable frame is located inside the outer shell; the carrier is located inside the movable frame and is used to support the lens; The anti-shake drive component is disposed between the moving frame and the side wall; the anti-shake drive component is used to drive the moving frame in the horizontal direction to perform anti-shake movement; The focusing drive assembly is disposed between the moving frame and the carrier; the focusing drive assembly is used to drive the carrier along the optical axis direction to perform focusing motion; the optical axis direction is perpendicular to the horizontal direction; the focusing drive assembly includes a focusing coil, the focusing coil is fixed to the carrier, and the focusing coil generates a magnetic force when energized to drive the carrier to perform focusing motion relative to the moving frame; The image stabilization drive assembly and the focus drive assembly are located between the carrier and at most three sidewalls, so that there is a non-magnetic area between the carrier and at least one sidewall; the carrier includes four sides; wherein at least one side is located within the non-magnetic area; a flexible circuit board is laid on the side within the non-magnetic area; The movable frame is fixed with a Hall magnet, and the flexible circuit board is electrically connected to a Hall sensor. The Hall sensor is used to detect the position information of the carrier in the optical axis direction and feed the position information back to the base through the flexible circuit board, so that the control unit connected to the base can control the current on the focusing coil in a closed loop.

2. The apparatus according to claim 1, characterized in that, The Hall sensor is located at the included angle between two adjacent sides of the carrier; the Hall magnet and the Hall sensor are arranged opposite each other, and a gap is provided between the Hall magnet and the Hall sensor.

3. The apparatus according to claim 1, characterized in that, The carrier is embedded with a conductive connector; the conductive connector is electrically connected to the flexible circuit board, and the flexible circuit board is connected to the pads on the base.

4. The apparatus according to claim 1, characterized in that, It also includes an upper spring assembly and a lower spring assembly; The upper spring assembly includes four sub-springs, each sub-spring having an inner section, a middle section, and an outer section; the outer section is fixedly connected to the base; the middle section is fixedly connected to the movable frame; and the inner section is fixedly connected to the carrier. The lower spring assembly has an outer end and an inner end; the inner end is connected to the carrier; the outer end is connected to the movable frame. The upper spring assembly is used to provide motion anti-torsion for the movable frame.

5. The apparatus according to claim 1, characterized in that, The image stabilization drive assembly includes image stabilization magnet groups located on up to three directional sides of the moving frame; wherein at least one of the image stabilization magnet groups is a Helbeck array magnet group.

6. The apparatus according to claim 5, characterized in that, The image stabilization drive component includes a Heilbeck array magnet group and two multi-level magnets; The two multi-level magnets are located at opposite ends of the movable frame; the multi-level magnets are configured as multi-level magnetized magnets or multi-level superimposed magnets.

7. The apparatus according to claim 5, characterized in that, The image stabilization drive component includes two groups of Hellbeck array magnets; Two Helbeck array magnet groups are located at adjacent ends of the moving frame.

8. The apparatus according to any one of claims 5-7, characterized in that, The Helbeck array magnet group is formed by stacking a first magnet, a second magnet, and a third magnet, with the second magnet located between the first magnet and the third magnet; the magnetization direction of the first magnet is opposite to that of the third magnet; the magnetization direction of the first magnet is perpendicular to that of the second magnet.

9. The apparatus according to claim 5, characterized in that, The anti-shake drive assembly also includes an anti-shake coil connected to the base; the anti-shake coil and the anti-shake magnet group are arranged in a one-to-one correspondence; when the current loaded on the anti-shake coil changes, it is used to drive the anti-shake magnet group to move the moving frame in the horizontal direction.

10. The apparatus according to claim 1, characterized in that, At least a portion of the movable frame is made of metal.

11. A multi-camera module, characterized in that, It includes a first carrier driving device and a second carrier driving device arranged adjacent to each other; the first carrier driving device is the carrier driving device according to any one of claims 1 to 10; the non-magnetic region in the first carrier driving device faces the second carrier driving device.

12. An electronic device, characterized in that, Includes a processing unit and at least one carrier driving device according to any one of claims 1 to 10; The processing unit is electrically connected to the carrier driving device and is used to control the operation of the carrier driving device, including image stabilization and autofocus functions.

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