Lens assembly with liquid lens zoom anti-shake mechanism

Abstract

The invention discloses a lens assembly with a liquid lens zoom anti-shake mechanism. The lens assembly comprises the liquid lens zoom anti-shake mechanism, a plane lens assembly and a base. The liquid lens zoom anti-shake mechanism comprises a liquid lens body and a carrier used for bearing the liquid lens body, and a permanent magnet is fixed to the carrier. The FPC coil is matched with the permanent magnet; the FPC coil comprises a plurality of layers of FPCs and a plurality of coils etched on a copper layer in the FPC coil; the coil and the permanent magnet can generate Lorentz force to drive the carrier to move so as to drive the liquid lens to deform, so that the curvature is changed to realize zooming; and one part of the plurality of coils and the other part of the plurality of coils can respectively generate Lorentz forces with opposite directions with the permanent magnet, so that the carrier drives the dynamic lens body to incline, thereby realizing angle anti-shake. The size of the zoom anti-shake mechanism can be reduced, so that the structure of the whole lens assembly is more compact.

Description

Technical Field

[0001] This invention belongs to the field of optical lens technology, and particularly relates to a lens assembly with a liquid lens zoom and image stabilization mechanism. Background Technology

[0002] With the rapid development of camera technology, thinness and high performance have become the core development trends for camera motors. Current technologies typically employ a multi-lens combination structure, adjusting the distance between the lenses to achieve focusing or zooming. However, traditional multi-lens solutions are limited by the number of components and assembly structure, making it difficult to meet the increasingly stringent thinness and lightness requirements of terminal devices.

[0003] To overcome this limitation, the industry has adopted liquid lenses to replace traditional lens groups. Liquid lenses, with their unique physical properties, can deform under external pressure, thereby changing their curvature and achieving stepless zoom. When used in combination with a fixed lens, they can achieve focusing. Compared to traditional multi-lens structures, they represent a significant advancement in thinness and lightness.

[0004] However, in practical applications, liquid lenses require external pressure to deform in order to achieve zoom, and also require external force to tilt them for image stabilization. Existing technologies have many components in the drive device that provides external force, which not only increases the overall thickness and volume of the focusing and image stabilization structure, but also makes the assembly process complicated, hindering the further development of thinner and lighter camera motors. At the same time, the dispersed drive components may also affect the consistency and reliability of product performance, restricting the widespread application and performance improvement of liquid lens focusing structures in various terminal devices.

[0005] Chinese patent application CN117310853A discloses a three-axis liquid lens assembly and lens. The liquid lens assembly includes a liquid lens and an image stabilization zoom drive mechanism. The image stabilization zoom drive mechanism includes a magnetic ring fixed coaxially with the liquid lens, an AF coil located behind the liquid lens for interacting with the magnetic ring to drive the axial movement of the magnetic ring, and an OIS coil for interacting with the magnetic ring to drive the magnetic ring to tilt. The OIS coils are at least four arranged in a cross shape and symmetrically arranged along two mutually perpendicular diameters of the magnetic ring. Two oppositely arranged OIS coils form a group, and the OIS coils on both sides of the axis of symmetry in the same group have opposite magnetic fields when energized. The AF coils are several symmetrically arranged along the diameter of the magnetic ring, and all AF coils generate the same magnetic field when energized.

[0006] The aforementioned existing technologies use multiple coils in conjunction with permanent magnets to achieve focusing and image stabilization functions, resulting in a relatively complex structure that is difficult to miniaturize and make thinner. Summary of the Invention

[0007] The purpose of this invention is to provide a lens assembly with a liquid lens zoom stabilization mechanism, which partially solves or alleviates the above-mentioned shortcomings in the prior art, reduces the size of the zoom stabilization mechanism, and makes the structure of the entire lens assembly more compact.

[0008] To solve the aforementioned technical problems, the present invention specifically adopts the following technical solution: A first aspect of the present invention is to provide a lens assembly having a liquid lens zoom stabilization mechanism, including the liquid lens zoom stabilization mechanism and a planar lens assembly; and further including a base for supporting the liquid lens zoom stabilization mechanism and the planar lens assembly. The liquid lens zoom image stabilization mechanism includes a liquid lens body, a carrier for supporting the liquid lens body, and a permanent magnet fixed on the carrier; it also includes an FPC coil that cooperates with the permanent magnet, the FPC coil including multiple layers of FPC and multiple coils etched into the copper layer inside it; the coil and the permanent magnet can generate a Lorentz force, driving the carrier to displace and causing the liquid lens to deform, thereby changing the curvature to achieve zoom; and a portion of the multiple coils and another portion of the multiple coils can respectively generate a Lorentz force in opposite directions with the permanent magnet, causing the carrier to tilt dynamically with the lens body, thereby achieving angle image stabilization.

[0009] Furthermore, multiple coils are arranged in a ring and symmetrically; the permanent magnet is a single piece corresponding to the position of the coil; or, the permanent magnet is several pieces corresponding to the position and number of coils.

[0010] Furthermore, it also includes a Hall element for sensing the movement of the permanent magnet and a circuit board disposed below the FPC coil; the multilayer FPC has cutouts with positions corresponding to the Hall element.

[0011] Furthermore, the circuit board is connected to a reinforcing plate at its edge, and the pins of the circuit board are disposed on the reinforcing plate.

[0012] Furthermore, the carrier has a through hole, and the liquid lens body is snapped into the through hole; the carrier is provided with several bent portions for fixing the liquid lens body and the permanent magnet respectively.

[0013] Furthermore, the base includes a base platform and a clearance platform protruding from the base platform; the clearance platform is hollow to accommodate the planar lens assembly; the liquid lens zoom and image stabilization assembly is sleeved on the outside of the clearance platform, so that the liquid lens body is located at the end of the clearance platform, thereby facing the planar lens inside the clearance platform; the clearance platform is a metal fitting, and the base platform is a plastic part, and the two are integrally formed by insert injection molding.

[0014] Furthermore, the top surface of the base has several glue storage grooves around the clearance platform for glue injection and bonding with the FPC coil of the liquid lens zoom image stabilization assembly; the top surface of the base has several electronic component clearance grooves around the clearance platform to avoid interference with the electrical components on the FPC coil; and the edge of the top surface of the base has several welding clearance grooves to avoid interference with the solder balls on the FPC coil.

[0015] Furthermore, the base has limiting bosses at the four corners of its top surface to limit the movement of the FPC coil; the outer side wall of the limiting bosses has adhesive grooves for bonding with the outer shell.

[0016] Furthermore, the clearance platform includes a conical body and a fitting part connected to the body; the fitting part includes a base plate and a bent foot connected to the base plate.

[0017] Furthermore, the substrate has several elongated injection holes that are narrow on the outside and wide on the inside, and several round injection holes are formed inside the elongated injection holes. Beneficial effects

[0018] This invention utilizes a liquid lens to replace the existing multi-lens structure for focusing and image stabilization, while using an FPC coil to replace the existing ring coil. The FPC coil adopts a multi-layer FPC integrated design, which integrates the coil, electronic circuitry, IC, capacitor, HALL sensing element, etc. on a single flexible circuit board. It eliminates the need for a separate coil frame, soldered circuitry, and additional control modules, significantly reducing the number of parts and assembly gaps, avoiding wasted radial space, and reducing the overall thickness compared to the traditional separate structure. It is perfectly suited for terminal scenarios such as smartphones and wearable devices where lens size is critical.

[0019] Traditional focusing / image stabilization mechanisms rely on multiple independent optical lenses, adjusting the lens spacing through mechanical structures to achieve focusing. Additional image stabilization modules, such as suspended lens groups and ball bearing guides, are also required, resulting in numerous parts, large space requirements, and difficulty in reducing axial thickness. Liquid lenses achieve stepless zoom with a single unit, eliminating the need for traditional multi-lens groups and their associated lens holders and spacers, thus reducing the number of parts. Simultaneously, the elimination of assembly gaps between multiple lenses reduces axial thickness, laying the foundation for a thinner and lighter overall mechanism.

[0020] Traditional multi-lens focusing requires reserving space for the movement of the lens back and forth, and the image stabilization module requires additional space for suspension and swinging; while liquid lenses achieve zooming through their own deformation, requiring only a carrier to drive them to produce a small displacement, without the need for a large stroke space, reducing the space occupied in both the radial and axial directions, and adapting to the extremely compact layout of terminal devices.

[0021] The liquid lens is rigidly connected to the carrier. The zoom and image stabilization functions share the liquid lens, carrier, and permanent magnet structure, eliminating the need for separate focusing and image stabilization modules as in traditional mechanisms, thus avoiding the spatial overlap of the two modules.

[0022] Traditional toroidal coils are independent rigid components that require a separately designed frame for fixation and then soldering to the circuit board. They also require additional independent control components and wiring space. FPC coils use a flexible integrated structure to replace rigid, separate components, further reducing size through spatial layout and component integration.

[0023] This invention employs a plastic base and a non-magnetic metal insert to form a clearance platform. Through an insert injection molding process, combined with the design of the base plate and the bent foot, and the combination of the barb structure formed by the injection molding long hole with a narrow outer side and a wide inner side, and the multi-point riveting of the injection molding round hole, a mechanical locking system is constructed. The connection between metal and plastic is upgraded from surface bonding to deep interlocking, which improves the pull-out resistance and completely avoids problems such as axial separation and circumferential rotation.

[0024] The non-magnetic metal support platform provides rigid support, while the plastic base platform combines lightweight and plasticity. The two complement each other to ensure structural rigidity and reduce overall weight. The metal fittings are stamped to ensure high dimensional accuracy and good consistency, and the plastic base platform can be integrally molded to various functional slots without the need for additional connecting parts, further improving structural stability.

[0025] The integrated design of the base and clearance platform, with metal fittings embedded inside the plastic base, reuses space for functional structures without occupying additional assembly volume, resulting in a reduced thickness compared to traditional split bases. The plastic base reduces overall weight, and the non-magnetic metal fittings are made with a stamping process to reduce thickness. Key structures are integrated inside the substrate without adding extra dimensions, perfectly adapting to the installation needs of miniaturized devices such as mobile phones, drones, and miniature cameras.

[0026] The top surface of the base is equipped with electronic component clearance slots and solder clearance slots around the clearance platform, respectively avoiding protruding components and solder balls on the FPC coil, ensuring the FPC coil fits flat and avoids compression damage; the slots are arranged in separate zones, without interference, requiring no additional trimming or adjustment of components. The four corner limiting bosses form a rectangular positioning frame, quickly defining the assembly position of the FPC coil without additional calibration, improving consistency in mass production; the glue reservoir provides dedicated space for FPC bonding, and the glue dispensing groove is integrated into the outer wall of the limiting bosses, ensuring bonding strength and simplifying the assembly process. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. The elements or parts in the drawings are not necessarily drawn to scale. Obviously, the drawings described below are some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 An exploded view of a liquid lens zoom image stabilization mechanism; Figure 3 A 3D view of the liquid lens zoom image stabilization mechanism; Figure 4 A schematic diagram illustrating the focusing principle of a liquid lens zoom image stabilization mechanism; Figure 5 This is a schematic diagram illustrating the principle of image stabilization during zoom using a liquid lens; Figure 6 This is a schematic diagram illustrating the principle of image stabilization in another direction using a liquid lens zoom image stabilization mechanism. Figure 7 A perspective view of some other embodiments of the liquid lens zoom image stabilization mechanism; Figure 8 This is a schematic diagram of the carrier's structure; Figure 9 This is a schematic diagram of the structure of Example 1; Figure 10 This is a schematic diagram of the structure of the air-cushioning platform.

[0029] Summary of attached labeling and identification: 1-Liquid lens body, 2-Carrier, 3-Permanent magnet, 4-FPC coil, 5-Reinforcing plate, 6-Circuit board, 7-Housing shell, 8-Planar lens assembly, 9-Base; 21-Liquid lens positioning bending part, 22-Permanent magnet positioning bending part, 41-Multi-layer FPC, 42-Coil, 43-Hollow hole, 61-Pin, 62-Hall element, 91-Air clearance platform, 92-Base platform, 93-Glue storage tank, 94-Electronic component air clearance slot, 95-Welding air clearance slot, 96-Limiting boss, 97-Dispensing tank, 911-Body, 912-Substrate, 913-Bending foot, 914-Injection molding elongated hole, 915-Injection molding round hole. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention 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 the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0031] In this document, suffixes such as "module," "part," or "unit" used to denote elements are used only for the purpose of illustrative purposes and have no specific meaning in themselves. Therefore, "module," "part," or "unit" may be used interchangeably.

[0032] In this document, the terms "upper," "lower," "inner," "outer," "front," "rear," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and for 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 limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In this document, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] In this document, "and / or" includes any and all combinations of one or more of the listed related items.

[0035] In this article, "multiple" means two or more, that is, it includes two, three, four, five, etc. Example

[0036] like Figure 1 As shown, the present invention provides a lens assembly with a liquid lens zoom image stabilization mechanism, including a liquid lens zoom image stabilization mechanism, a planar lens assembly 8, and a base 9 provided in Embodiment 1 for supporting the liquid lens zoom image stabilization mechanism and the planar lens assembly 8.

[0037] like Figure 2 , Figure 3As shown, the liquid lens zoom image stabilization mechanism includes a liquid lens body 1, a carrier 2 for supporting the liquid lens body 1, and a permanent magnet 3 fixed on the carrier 2; it also includes an FPC coil 4 that cooperates with the permanent magnet 3. The FPC coil 4 includes multiple layers of FPC 41 and multiple coils 42 etched into its internal copper layer. The coils 42 and the permanent magnet 3 can generate a Lorentz force, driving the carrier 2 to displace and deform the liquid lens, thereby changing the curvature to achieve zoom; and a portion of the multiple coils 42 and another portion of the multiple coils 42 can respectively generate a Lorentz force in opposite directions with the permanent magnet 3, causing the carrier 2 to tilt dynamically with the lens body, thereby achieving angle image stabilization.

[0038] The liquid lens body 1 is filled with a special functional liquid, which has the physical property of changing curvature by deformation. Therefore, the focal length can be adjusted simply by changing its own shape, without the need for mechanical lens movement. Compared with traditional multi-lens combinations, this greatly simplifies the complexity of zoom structures.

[0039] like Figure 8 As shown, the carrier 2 serves as both a load-bearing and transmission component. First, it fixes the liquid lens body 1 to ensure its stable position and uniform force during movement. Second, it fixes the permanent magnet 3, forming a rigid connection between the permanent magnet 3 and the carrier 2 to ensure that electromagnetic power is efficiently transmitted to the liquid lens.

[0040] In this embodiment, the carrier 2 has a through hole, and the liquid lens body 1 is snapped into the through hole. The carrier 2 is provided with several bent portions for fixing the liquid lens body 1 and the permanent magnet 3. Specifically, 3-4 liquid lens positioning bent portions 21 are evenly distributed around the through hole, with the bending direction facing the liquid lens. After being embedded, they fit against the side of the lens's encapsulation shell, restricting the radial displacement of the lens and ensuring that the center of the lens is completely aligned with the center of the through hole of the carrier 2 and the core axis of the mechanism. The permanent magnet positioning bent portions 22 are distributed circumferentially along the lower surface of the carrier 2, with the bending direction facing the permanent magnet 3. They fit against the inner wall of the permanent magnet 3, restricting the radial and axial displacement of the permanent magnet 3 and ensuring that the permanent magnet 3 and the FPC coil 4 are precisely aligned.

[0041] The permanent magnet 3 provides a stable magnetic field environment. It is fixed on the carrier 2 and moves synchronously with the carrier 2. Through electromagnetic interaction with the FPC coil 4, it converts electromagnetic energy into mechanical displacement energy, providing power for zoom and image stabilization.

[0042] In the FPC coil 4, the coil 42 etched in the copper layer is not a separate component, but is directly arranged inside the multi-layer FPC 41. The FPC coil 4 not only integrates the coil 42 with the circuit, but also adapts to compact spaces through the flexibility of the FPC, while supporting independent control of multiple coils 42. The coil 42 is formed by etching a coil circuit into the copper layer inside the FPC during the molding process. When this circuit is energized, it can generate the function of a coil.

[0043] The FPC coil 4 adopts a multi-layer board structure, integrating the coil 42 circuit, conduction circuit, IC, capacitor and other components in a limited space, without the need for additional independent circuits and component mounting positions. In contrast, the traditional coil 42 requires separate space and additional space for circuit connections and component installation, resulting in a bulky overall structure. The integrated design of the FPC coil 4 significantly reduces the gap between components, directly supporting the further reduction in the thinness of the camera motor.

[0044] like Figure 2 As shown, in some embodiments, multiple coils 42 are arranged in a ring and symmetrically; the permanent magnet 3 is a single piece corresponding to the position of the coil 42.

[0045] Specifically, the distribution trajectory of coil 42 is a closed circle, and the center of the circle coincides with the central axis of the liquid lens and carrier 2. The number of coils 42 can be set according to the requirements, such as 3 sets as shown in the figure. The central angle between adjacent coils 42 is equal. For example, if there are 3 sets of coils 42, the adjacent spacing is 120° to ensure the balance of force.

[0046] like Figure 4 As shown, when the mechanism performs the zoom function, all coils 42 are synchronously energized, and the current direction is consistent. Since the coils 42 are arranged symmetrically in a ring and are in the uniform magnetic field of the entire permanent magnet 3, the Lorentz force generated by each coil 42 is equal in magnitude and in the same direction; after the Lorentz forces of multiple coils 42 are superimposed, they form a resultant force along the central axis of the carrier 2, which drives the carrier 2 to make linear displacement with the liquid lens body 1 without off-center loading or tilting, ensuring that the liquid lens body 1 is subjected to uniform external force, achieving symmetrical deformation, and avoiding focal length shift or lens damage caused by uneven force.

[0047] Angle stabilization refers to the process of detecting angular deviations such as pitch, roll, and yaw angles generated by the equipment during shooting, and then driving the liquid lens carrier to make corresponding angle adjustments to compensate for the optical path deviation caused by shaking, thereby ensuring that light is accurately projected onto the imaging sensor and ultimately achieving a clear image.

[0048] like Figure 5 , Figure 6As shown, when the mechanism performs the angle stabilization function, the coils 42 are independently energized. For example, two coils 42 form one group, and the other coil 42 forms another group, with the current in the two groups of coils 42 in opposite directions. After the reverse currents of the two groups of coils 42 interact with the magnetic field of the entire permanent magnet 3, they generate Lorentz forces in opposite directions, driving the carrier 2 to tilt precisely with the liquid lens body 1, thereby achieving high-precision image stabilization compensation to counteract tilting and shaking during shooting.

[0049] like Figure 7 As shown, in some other embodiments, multiple coils 42 are arranged in a ring and symmetrically; the permanent magnet 3 consists of several blocks corresponding to the position and number of coils 42.

[0050] The number of permanent magnets 3 is exactly equal to the number of coils 42, such that 3 coils 42 correspond to 3 permanent magnets 3, ensuring that each coil 42 has a dedicated permanent magnet 3 to generate electromagnetic power; each permanent magnet 3 is fixed on the carrier 2, and its installation position is aligned with the corresponding coil 42. Along the circumferential direction, the center of the permanent magnet 3 and the center of the coil 42 are on the same radial line; along the axial direction, the permanent magnet 3 coincides with the coil 42, ensuring that the coil 42 can be in the optimal magnetic field region of the corresponding permanent magnet 3, and achieving efficient coupling between the magnetic field and the coil 42.

[0051] When the mechanism performs the zoom function, all coils 42 are synchronously energized with current of the same direction and magnitude. Each coil 42 generates a one-to-one Lorentz force with its corresponding permanent magnet 3. Due to the annular symmetry of the coils 42 and the consistent position and magnetic field characteristics of the permanent magnet 3, all Lorentz forces are equal in magnitude and direction, thus forming a stable resultant force that drives the carrier 2 to perform linear displacement of the liquid lens body 1 without bias or tilt.

[0052] When the mechanism performs image stabilization, the coil 42 is also divided into two groups, with current flowing through the two groups of coils 42 in opposite directions: each group of coils 42 generates a reverse Lorentz force with its corresponding permanent magnet 3; the drive carrier 2 carries the liquid lens body 1 to tilt precisely according to the image stabilization requirements; since each permanent magnet 3 and its corresponding coil 42 have high coupling efficiency, the torque intensity can be precisely controlled by independently adjusting the current of each group of coils 42, thereby achieving fine adjustment of the tilt angle and effectively counteracting the shake shift during shooting.

[0053] In this embodiment, to improve integration, the multi-layer FPC 41 is a single unit, with multiple coils 42 integrated within it, and each coil 42 is powered independently. Besides the coils 42, other electrical components can be integrated onto the multi-layer FPC 41.

[0054] To enable closed-loop control of the FPC coil 4, a Hall element 62 is also included for sensing the movement of the permanent magnet 3. Its function is to accurately capture the motion parameters of the mechanism by sensing changes in the magnetic field of the permanent magnet 3, and to convert the mechanical motion into quantifiable electrical signals, providing real-time and accurate feedback for zoom and image stabilization functions. In some embodiments, the Hall element 62 is integrated onto the multilayer FPC 41 of the FPC coil 4.

[0055] It is understandable that the circuit board 6 used to mount electrical components such as the Hall element 62 can also be set separately. That is, it also includes the circuit board 6 set below the FPC coil 4; this circuit board 6 can also be made of FPC, and it can be connected to the multilayer FPC 41 of the FPC coil 4 by soldering to achieve integration.

[0056] If a separate circuit board 6 is used to mount the Hall element 62, then the multilayer FPC 41 has a cutout 43 corresponding to the position of the Hall element 62. By creating a precisely aligned cutout 43 on the multilayer FPC 41, the shielding and interference of the magnetic field by the thickness and material of the FPC itself are eliminated, ensuring that the magnetic field of the permanent magnet 3 can be efficiently and without attenuation conducted to the Hall element 62 on the circuit board 6 below, thus ensuring the accuracy of the detection signal of the Hall element 62.

[0057] In addition, the edge of the circuit board 6 is connected to a reinforcing plate 5, and the pins 61 of the circuit board 6 are disposed on the reinforcing plate 5. The reinforcing plate 5 makes it easier to bend the circuit board 6 and improves the flatness and strength of the bonding assembly between the circuit board 6 and the base.

[0058] like Figure 8 As shown, the base 9 of the present invention is used to support the liquid lens zoom and image stabilization mechanism and the planar lens assembly 8. Its specific structure includes a base 92 and a clearance platform 91 protruding from the base 92; the clearance platform 91 is hollow to accommodate the planar lens assembly; the liquid lens zoom and image stabilization assembly is sleeved on the outside of the clearance platform 91, such that the liquid lens body 911 is located at the end of the clearance platform 91, thus facing the planar lens inside the clearance platform 91; the clearance platform 91 is a metal insert, and the base 92 is a plastic part, both integrally formed by insert injection molding.

[0059] The base 9 provides an integrated support and optical path adaptation mounting foundation for the liquid lens zoom stabilization mechanism and the planar lens assembly 8. It ensures precise alignment of the optical paths of the liquid lens and the planar lens, adapts to the movement space requirements of the zoom stabilization mechanism, and also takes into account the industry trend of miniaturization and thinning of lens assemblies.

[0060] The base 92 is made of plastic, which has the advantages of convenient injection molding, controllable cost, and light weight. As the supporting base of the entire base 9, it provides a stable connection foundation for the air-cushioning platform 91, and is used to connect the lens assembly housing, FPC coil and other components. Its bottom surface can be designed as a flat structure to facilitate the assembly and fixation of the overall lens assembly with the equipment body.

[0061] The air-avoiding platform 91 has a hollow design, forming an internal space to accommodate the planar lens assembly. The dimensions of the space are precisely matched with the shape and thickness of the planar lens assembly, ensuring that the planar lens assembly is inserted without loosening or shifting. The external contour is adapted to the inner ring structure of the liquid lens zoom image stabilization assembly, meeting the requirements for mounting.

[0062] The base 92 and the clearance stage 91 are integrally molded using an insert injection molding method. The metal insert and the plastic part form a strong mechanical engagement, preventing loosening or separation during long-term use and adapting to the vibration environment of the lens assembly. The integrated molding reduces assembly deviations, resulting in higher relative positional accuracy between the clearance stage 91 and the base 92, ensuring that the alignment error between the liquid lens and the plane lens is controlled within the optically permissible range. The two require no additional connecting parts, significantly reducing the overall thickness and volume of the base 9.

[0063] In addition, the clearance platform 91 provides high-strength support as a metal fitting to resist mechanical stress during the installation and disassembly of the liquid lens assembly. At the same time, the clearance platform 91 is made of non-magnetic metal material and undergoes one of the following surface treatments: oxidation, electroplating, electrophoresis or sandblasting. Its non-magnetic properties avoid interfering with the magnetic field drive system, and the surface treatment can improve wear resistance and corrosion resistance.

[0064] The base 92, made of plastic, reduces the overall weight of the base 9, facilitating the lightweight design of the lens assembly. At the same time, the plastic is highly malleable and can be molded into other auxiliary structures in one piece according to assembly requirements, improving assembly convenience.

[0065] In some embodiments, the top surface of the base has several glue storage grooves 93 around the clearance platform 91 for injecting glue and bonding with the FPC coil of the liquid lens zoom image stabilization assembly.

[0066] The glue reservoir 93 is a structure that supports and reinforces the adhesive. By precisely arranging the glue reservoir 93 around the clearance platform 91 on the top surface of the base, a dedicated space is provided for the glue injection process, ensuring that the glue can fully fill the mating surface between the FPC coil and the base 9, forming a stable mechanical connection. This ensures the positional accuracy of the FPC coil during zoom and image stabilization, while also meeting the standardized assembly requirements in mass production.

[0067] The top surface of the base has several electronic component clearance slots 94 around the clearance platform 91 to avoid interference with the electrical components on the FPC coil.

[0068] The electronic component clearance slot 94 is a dedicated clearance space for the electronic components integrated on the FPC coil. Many of the electronic components integrated on the FPC coil, such as the driver IC and Hall effect sensors, are protruding structures. If directly mounted to the top surface of the base, physical interference would prevent the FPC coil from fitting flat, and could even damage the components. The electronic component clearance slot 94 avoids signal interference or structural stress concentration caused by rigid contact between the components and the base 9. It ensures that the FPC coil can be accurately and flatly mounted on the base 9, while providing independent and safe housing space for the electronic components, guaranteeing the stability of component function and the reliability of the assembly structure.

[0069] The top surface of the base has several welding clearance grooves 95 to avoid interference with the solder balls on the FPC coil.

[0070] The solder clearance groove 95 is a dedicated space to avoid solder balls when soldering FPC coils. During the soldering process of FPC coils, protruding solder balls are easily formed at the solder joints. If they are directly attached to the top surface or edge of the base, the rigid support of the solder balls will prevent the FPC coil from fitting flat against the base 9, and may even cause the FPC circuit layer to be deformed under pressure. The solder clearance groove 95 prevents the protruding solder balls from rubbing and squeezing against the edge of the base 9, which could cause the solder balls to fall off and cause a short circuit, or scratch the surface insulation layer of the FPC coil.

[0071] The base has four corners of a limiting boss 96 for limiting the FPC coil. The outer side wall of the limiting boss 96 has a dotted groove 97 for bonding with the outer shell 7.

[0072] The limiting boss 96 is the precise positioning reference structure for the FPC coil. After the FPC coil is sleeved on the outside of the clearance platform 91, it is prone to translation or rotation due to assembly deviations or equipment vibration, which will cause the relative position of the coil and the magnet to shift, affecting the uniformity of the Lorentz force drive. The rigid constraint formed by the four corner positioning is used to confine the FPC coil within the preset assembly area, ensuring the accuracy of its relative position with the clearance platform 91 and the magnet.

[0073] The adhesive dispensing groove 97 serves as a reinforcement structure for the bonding between the base 9 and the outer shell 7. The bonding surfaces of the base 9 and the outer shell 7 are flat, making it prone to adhesive loss and insufficient adhesion. Over long-term use, this can lead to loosening due to vibration and temperature changes. Furthermore, the limited space in miniaturized motors makes it difficult to install independent bonding structures, resulting in poor assembly stability of the outer shell 7. In this embodiment, the outer wall space of the limiting boss 96 provides a dedicated storage and adhesion area for the adhesive, thereby strengthening the bond between the base 9 and the outer shell 7.

[0074] like Figure 10 As shown, the clearance platform 91 in this embodiment includes a conical body 911 and a fitting part connected to the body 911; the fitting part includes a base plate 912 and a bent foot 913 connected to the base plate 912.

[0075] Specifically, four bent feet 913 are evenly distributed along the edge of the substrate 912, formed by stamping and bending, and are L-shaped with a bending angle of 90°~120°. The length is adjusted according to the thickness of the base 92. The free end of the bent foot 913 can be designed as arc-shaped or serrated to increase the mechanical engagement area with the plastic base 92. The bent feet 913 are perpendicular to the substrate 912 or slightly inclined outward to ensure that the plastic material can completely wrap the bent feet 913 during injection molding, forming a strong interlocking structure.

[0076] To further enhance the connection strength between the clearance platform 91 and the base, in this embodiment, the substrate 912 is provided with several elongated injection holes 914 that are narrow on the outside and wide on the inside, and several round injection holes 915 are provided on the inner side of the elongated injection holes 914.

[0077] The elongated hole has a tapered shape, narrower at the outer edge and wider at the inner edge. The wider bottom of the hole provides space for the hook head to form after curing, allowing the plastic to fit tightly into the metal hole wall after molding. After the plastic is fully filled into the elongated hole, it naturally conforms to the contour of the hole wall, which is narrower at the outer edge and wider at the inner edge. The plastic on the side of the hole mouth fits into the narrow opening to form a connecting neck, and the plastic on the side of the hole bottom fits into the wide cavity to form an enlarged hook head, presenting an overall shape of a hook that is thinner at the outer edge and thicker at the inner edge. At this point, the plastic inside the elongated hole fuses with the plastic on the surface of the substrate 912 and around the bent foot 913, constructing a continuous and stable connection system.

[0078] As the mold cools, the molten plastic gradually solidifies, and the outer, narrower, and inner, coarser structure inside the elongated hole forms a hard barb. The hook head, i.e., the bulging part at the bottom of the hole, tightly engages with the inner wall of the metal elongated hole. Furthermore, the clamping force generated by the cooling and shrinkage of the plastic makes the engagement between the barb and the metal substrate 912 even tighter. At the same time, the intermolecular forces between the plastic and the metal surface form an auxiliary adhesive, further filling the tiny gaps in the mechanical engagement and strengthening the connection effect.

[0079] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0080] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A lens assembly with a liquid lens zoom image stabilization mechanism, characterized in that: It includes a liquid lens zoom image stabilization mechanism and a planar lens assembly; it also includes a base for supporting the liquid lens zoom image stabilization mechanism and the planar lens assembly; The liquid lens zoom image stabilization mechanism includes a liquid lens body, a carrier for supporting the liquid lens body, and a permanent magnet fixed on the carrier; it also includes an FPC coil that cooperates with the permanent magnet, the FPC coil including multiple layers of FPC and multiple coils etched into the copper layer inside it; the coil and the permanent magnet can generate a Lorentz force, driving the carrier to displace and causing the liquid lens to deform, thereby changing the curvature to achieve zoom; and a portion of the multiple coils and another portion of the multiple coils can respectively generate a Lorentz force in opposite directions with the permanent magnet, causing the carrier to tilt dynamically with the lens body, thereby achieving angle image stabilization.

2. The lens assembly with a liquid lens zoom and image stabilization mechanism according to claim 1, characterized in that: Multiple coils are arranged in a ring and symmetrically; the permanent magnet is a single piece corresponding to the position of the coil; or, the permanent magnet is several pieces corresponding to the position and number of coils.

3. A lens assembly with a liquid lens zoom and image stabilization mechanism according to claim 1, characterized in that: It also includes a Hall element for sensing the movement of the permanent magnet and a circuit board located below the FPC coil; the multilayer FPC has cutouts corresponding to the positions of the Hall element.

4. A lens assembly with a liquid lens zoom image stabilization mechanism according to claim 3, characterized in that: The circuit board is connected to a reinforcing plate at its edge, and the pins of the circuit board are set on the reinforcing plate.

5. A lens assembly with a liquid lens zoom image stabilization mechanism according to claim 1, characterized in that: The carrier has a through hole, and the liquid lens body is snapped into the through hole; the carrier is provided with several bent parts for fixing the liquid lens body and the permanent magnet respectively.

6. A lens assembly with a liquid lens zoom image stabilization mechanism according to claim 1, characterized in that: The base includes a base platform and a clearance platform protruding from the base platform; the clearance platform is hollow to accommodate the planar lens assembly; the liquid lens zoom and image stabilization assembly is sleeved on the outside of the clearance platform, so that the liquid lens body is located at the end of the clearance platform, thereby facing the planar lens inside the clearance platform; the clearance platform is a metal fitting, and the base platform is a plastic part, and the two are integrally formed by insert injection molding.

7. A lens assembly with a liquid lens zoom image stabilization mechanism according to claim 6, characterized in that: The top surface of the base has several glue storage grooves around the clearance platform for glue injection and bonding with the FPC coil of the liquid lens zoom image stabilization assembly; the top surface of the base has several electronic component clearance grooves around the clearance platform to avoid interference with the electrical components on the FPC coil; the edge of the top surface of the base has several welding clearance grooves to avoid interference with the solder balls on the FPC coil.

8. A lens assembly with a liquid lens zoom image stabilization mechanism according to claim 6, characterized in that: The base has four corners on its top surface with limiting bosses for limiting the FPC coils; the outer side wall of the limiting bosses has a dotted groove for bonding with the outer shell.

9. A lens assembly with a liquid lens zoom image stabilization mechanism according to claim 6, characterized in that: The clearance platform includes a conical body and a fitting part connected to the body; the fitting part includes a base plate and a bent foot connected to the base plate.

10. A lens assembly with a liquid lens zoom image stabilization mechanism according to claim 6, characterized in that: The substrate has several elongated injection holes that are narrow on the outside and wide on the inside, and several round injection holes are formed inside the elongated injection holes.

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