Electromagnetic driving lens device, camera and electronic equipment

Abstract

The utility model relates to an electromagnetic drive lens device, a camera and an electronic device, the electromagnetic drive lens device comprises a pedestal, a housing, a carrier for bearing a lens, an OIS suspension wire and an AF suspension wire for supporting the carrier, an OIS magnet and an OIS coil for driving the carrier, and an AF magnet and an AF coil for driving the carrier, and the OIS suspension wire and the AF suspension wire are perpendicular to each other. The utility model provides an electromagnetic driving lens device, which is different from the traditional design depending on a ball bearing in the past, the innovative scheme abandons an AF ball and an OIS ball, and adopts an OIS suspension wire and an AF suspension wire which are perpendicular to each other to serve as main driving force conduction media, so that the mechanism complexity is greatly simplified, and the transmission efficiency is improved. And sufficient space is reserved for a signal transmission line, so that effective layout of a 3-axis closed-loop control system line is facilitated, and double improvement of the feedback speed and the accuracy of the system is ensured.

Description

Technical Field

[0001] The utility model relates to the field of lens motors, and more specifically, to an electromagnetically driven lens device, a camera, and electronic equipment. Background Art

[0002] Against the backdrop of rapidly evolving optical imaging and autofocus technologies, traditional lens drive mechanisms face significant challenges. For a long time, these mechanisms relied on ball bearings as their core support and transmission components, using AF and OIS ball bearings to achieve precise positioning and flexible rotation. However, over time, it has become increasingly clear that this design, while once popular, harbors a series of significant challenges, most notably its high mechanical complexity and the difficulty of integrating a 3-axis closed-loop control system.

[0003] First, while ball bearings initially provided stable support, they exhibited significant limitations in practical applications. The excessive number of components resulted in a cumbersome overall structure, increasing assembly difficulty and cost while also limiting the device's miniaturization and lightweighting. More importantly, complex mechanisms often come with high failure rates and maintenance requirements, a significant drawback for modern mobile devices, which strive for ultimate portability and reliability.

[0004] Secondly, traditional designs lack forward-thinking considerations when it comes to signal routing. This makes existing wiring schemes particularly inadequate for the currently popular 3-axis closed-loop control systems. Closed-loop control relies on precise sensor feedback and real-time computation, requiring signal transmission lines to transmit information from all angles to the central processing unit with minimal delay and interference. However, the presence of ball bearings and the resulting mechanical limitations often force circuits to take tortuous routes, increasing the risk of signal attenuation and making system debugging and subsequent maintenance more difficult, severely impacting overall performance.

[0005] Furthermore, while the traditional four-sided magnet design theoretically appears to provide a uniform magnetic field distribution, in practice it is plagued by severe magnetic leakage. Magnetic leakage refers to the leakage of magnetic fields into unintended areas. This not only disrupts the normal operation of surrounding electronic equipment but also exacerbates electromagnetic interference between multi-motor systems. This effect is particularly pronounced within highly integrated devices like smartphones. Magnetic leakage limits the proper spacing between motors, hindering designers' efforts to achieve efficient spatial configuration within limited space, and negatively impacting overall device performance.

[0006] Finally, the combination of all these factors can lead to the annoying "moire" phenomenon under certain shooting conditions. Moire refers to the regular, streaky distortion that appears in the image when recording video or taking photos, caused by the interference between the light source frequency and the lens scan rate. While this issue isn't directly caused by the drive unit itself, it indirectly reflects insufficient overall system tuning and compatibility, reminding the industry to comprehensively examine and address potential risks in all aspects. Utility Model Content

[0007] In light of this, the present invention provides an electromagnetically driven lens device. Unlike traditional designs that rely on ball bearings, this innovative solution eliminates both AF and OIS ball bearings and instead employs perpendicularly arranged OIS suspension wires and AF suspension wires as the primary driving force transmission medium. This change not only greatly simplifies the complexity of the mechanism but also leaves ample space for signal transmission circuitry, facilitating the efficient routing of the 3-axis closed-loop control system, thereby ensuring a dual improvement in system feedback speed and accuracy.

[0008] The purpose of the utility model is achieved through the following technical solutions:

[0009] An electromagnetically driven lens device includes a base, a housing, a carrier for supporting the lens, an OIS suspension wire and an AF suspension wire supporting the carrier, an OIS magnet and an OIS coil for driving the carrier, and an AF magnet and an AF coil for driving the carrier. The OIS suspension wire and the AF suspension wire are perpendicular to each other.

[0010] What makes it unique is that it subverts the traditional architecture based on AF ball bearings and OIS ball bearings for a long time, and boldly uses OIS suspension wires and AF suspension wires set perpendicular to each other as the key media for transmitting power and guidance. This innovation not only reshapes the logic of lens motion control, but also releases unprecedented technological dividends in multiple dimensions.

[0011] Simplify the structure and reduce energy consumption

[0012] The decision to abandon ball bearings eliminates the inherent mechanical friction and wear risks of traditional designs. The OIS and AF suspension wires, with their exceptional rigidity and toughness, not only ensure precise three-dimensional positioning of the lens carrier, but also significantly reduce energy consumption and achieve higher energy efficiency due to their near-zero friction. This improvement is particularly crucial during continuous, high-intensity shooting, helping to extend battery life and improve overall device performance.

[0013] Improve accuracy and speed up feedback

[0014] The vertical arrangement of the OIS and AF suspension wires not only simplifies the internal structure but also opens up new paths for signal transmission line layout. Powered by a 3-axis closed-loop control system, this design allows signal lines to be routed directly to the core components over the shortest distances, significantly reducing latency between information processing and action execution. This means that whether it's the swift movement of macro close-ups or the rapid tracking of telephoto angles, the electromagnetically driven lens mechanism can react with lightning speed, capturing every precious moment and ensuring a new level of image clarity and stability.

[0015] Enhance flexibility and broaden application scenarios

[0016] Compared to the fixed ball bearings of traditional designs, OIS and AF suspensions offer unprecedented flexibility in the lens mechanism. This vertically staggered layout, reminiscent of interwoven vines in nature, allows for unlimited rotation and tilt of the lens carrier. This is particularly crucial for specialized photography environments like drone aerial photography and underwater exploration, easily navigating complex lighting conditions and unstable shooting platforms. This expands the creative boundaries of both professional and amateur photographers, inspiring boundless inspiration.

[0017] Preferably, there are four OIS suspension wires, and the four OIS suspension wires are connected to the four corner areas of the carrier.

[0018] The OIS suspension wire design employs four wires evenly distributed at the four corners of the support, forming a stable quadrilateral support structure. This layout strategy draws on the principle of stability in geometry: the inherent rigidity of a quadrilateral, which can resist distortion without losing its shape. Therefore, when the support is performing horizontal image stabilization, the four OIS wires create a strong restraining force, ensuring stability even under severe vibration. This avoids the potential swing deviation caused by single-point or asymmetric support, significantly improving image clarity and visual quality.

[0019] Preferably, there are four AF suspension wires, and the four OIS suspension wires are arranged in pairs and connected to two opposite sides of the carrier.

[0020] The AF suspension wires also utilize four wires, but unlike the OIS suspension wires, they are organized into two groups of two, connected in parallel to two pairs of sides of the carrier. This grouped suspension method is designed to maximize the sensitivity and accuracy of the autofocus function. By precisely controlling the force applied by the two groups of wires, fine displacement of the carrier is achieved, ensuring rapid switching from near to far shots in milliseconds. Importantly, grouped suspension also minimizes mutual interference between the individual wires, ensuring a prompt response to every focus command, greatly enhancing the user's shooting experience, especially when shooting macro shots in low-light environments or capturing high-speed motion.

[0021] Preferably, the carrier includes a first carrier and a second carrier that are independent of each other, one end of the OIS suspension wire is connected to the base and the other end is connected to the first carrier, and one end of the AF suspension wire is connected to the base and the other end is connected to the second carrier.

[0022] Another highlight of the design is that the carrier is divided into a first carrier and a second carrier, which are independent of each other and driven by the OIS suspension wire and the AF suspension wire respectively. In this way, the two key functions of OIS and AF can operate independently, avoiding the functional coupling effect that may occur during complex calculations, ensuring that each is focused and efficient in its specific task. For example, when OIS anti-shake operation is in progress, the first carrier can move freely without being affected by the AF suspension wire, and vice versa. This not only reduces the overall power consumption of the system, but also leaves more room for algorithm optimization, allowing the device to demonstrate better adaptability and imaging quality when facing various complex shooting environments.

[0023] Preferably, there are two OIS coils, which are perpendicular to each other and adjacent to the first side of the carrier. There are also two OIS magnets, which are respectively disposed adjacent to the two OIS coils. The AF magnet is disposed on the first side of the carrier, and the AF coil is disposed adjacent to the AF magnet.

[0024] The OIS coil and OIS magnet, as well as the AF magnet and AF coil, are all concentrated on one side, rather than distributed around the perimeter as is traditional. This innovative layout not only effectively reduces magnetic flux leakage but also significantly optimizes the spatial configuration of the multiple motors. Since magnets and coils are not mounted on the other three sides, magnetic field interference between adjacent components is eliminated, ensuring that each drive unit can maximize its performance in a pure environment, improving the responsiveness and control accuracy of the entire system. Furthermore, this centralized layout facilitates heat dissipation, reducing thermal stress on sensitive electronic components and ensuring long-term reliability.

[0025] Preferably, the two OIS magnets and the AF magnet are fixed to the second carrier, the two OIS coils are attached to the lower surface of the first carrier, and the AF coil is arranged on the side of the base.

[0026] The OIS and AF functions are supported by a first and second carrier, respectively. Two OIS magnets are fixed to the second carrier, while the OIS coil is tightly attached to the lower surface of the first carrier. The AF coil is located on the side of the base, adjacent to the AF magnet. This separate design reduces the interaction between the different functional modules through physical isolation, while also enabling synchronized and coordinated operation of the two systems through precise electromagnetic induction. Especially when shooting high dynamic range (HDR), the independent control and coordinated coordination of the two carriers ensures that the AF system can quickly and accurately focus even while OIS is engaged, providing users with a smooth and unobstructed shooting experience and delivering exceptional imaging results for both still and video capture.

[0027] Preferably, the OIS suspension wire is connected to the first carrier via a spring sheet.

[0028] The OIS suspension wire is connected to the primary carrier using a spring clip. This clip possesses excellent elasticity and resilience, allowing it to quickly recover after deformation due to external forces, ensuring stability and positioning accuracy during complex movements. Furthermore, the inclusion of the spring clip enhances the device's shock resistance, maintaining excellent filming quality and longevity even in extremely harsh shooting environments, such as outdoor sports and vehicle vibrations. This fully embodies the principles of humanistic care and durable design.

[0029] The utility model discloses a camera, comprising the electromagnetic driven lens device as described above.

[0030] The utility model discloses an electronic device, comprising the camera mentioned above.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] The unique feature of this new electromagnetically driven lens device is that it overturns the traditional architecture based on AF and OIS ball bearings. It boldly uses mutually perpendicular OIS suspension wires and AF suspension wires as the key medium for transmitting power and guidance. This innovation not only reshapes the logic of lens motion control, but also unleashes unprecedented technological benefits in multiple dimensions.

[0033] Simplify the structure and reduce energy consumption

[0034] The decision to abandon ball bearings eliminates the inherent mechanical friction and wear risks of traditional designs. The OIS and AF suspension wires, with their exceptional rigidity and toughness, not only ensure precise three-dimensional positioning of the lens carrier, but also significantly reduce energy consumption and achieve higher energy efficiency due to their near-zero friction. This improvement is particularly crucial during continuous, high-intensity shooting, helping to extend battery life and improve overall device performance.

[0035] Improve accuracy and speed up feedback

[0036] The vertical arrangement of the OIS and AF suspension wires not only simplifies the internal structure but also opens up new paths for signal transmission line layout. Powered by a 3-axis closed-loop control system, this design allows signal lines to be routed directly to the core components over the shortest distances, significantly reducing latency between information processing and action execution. This means that whether it's the swift movement of macro close-ups or the rapid tracking of telephoto angles, the electromagnetically driven lens mechanism can react with lightning speed, capturing every precious moment and ensuring a new level of image clarity and stability.

[0037] Enhance flexibility and broaden application scenarios

[0038] Compared to the fixed ball bearings of traditional designs, OIS and AF suspensions offer unprecedented flexibility in the lens mechanism. This vertically staggered layout, reminiscent of interwoven vines in nature, allows for unlimited rotation and tilt of the lens carrier. This is particularly crucial for specialized photography environments like drone aerial photography and underwater exploration, easily navigating complex lighting conditions and unstable shooting platforms. This expands the creative boundaries of both professional and amateur photographers, inspiring boundless inspiration. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0040] Figure 1 This is an exploded view of an electromagnetically driven lens device according to an embodiment of the present invention.

[0041] Figure 2 This is an exploded view of the electromagnetically driven lens device from another perspective according to an embodiment of the present invention.

[0042] Figure 3This is a partial structural diagram of an electromagnetically driven lens device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0044] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0045] It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in the subsequent figures. In the description of the embodiments of the present application, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", etc. is based on the orientation or position relationship shown in the drawings, or is the orientation or position relationship in which the product of the application is usually placed when in use, or is the orientation or position relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0046] It should be noted that, unless there is any conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0047] The technical solution in this application will be described below with reference to the accompanying drawings.

[0048] This embodiment provides an electromagnetically driven lens device, including a base 100, a housing 200, a carrier 300 for supporting the lens, an OIS suspension wire 400 and an AF suspension wire 500 supporting the carrier 300, an OIS magnet 600 and an OIS coil 700 for driving the carrier 300, and an AF magnet 800 and an AF coil 900 for driving the carrier 300. The OIS suspension wire 400 and the AF suspension wire 500 are perpendicular to each other.

[0049] Unlike traditional designs that rely on ball bearings, this innovative solution dispenses with both AF and OIS ball bearings, instead employing perpendicularly positioned OIS wires 400 and AF wires 500 as the primary driving force transmission medium. This change not only greatly simplifies the mechanical complexity but also leaves ample space for signal transmission lines, facilitating the efficient routing of the 3-axis closed-loop control system, thereby ensuring a dual improvement in system feedback speed and accuracy.

[0050] What makes it unique is that it subverts the traditional architecture based on AF ball bearings and OIS ball bearings for a long time, and boldly uses the OIS suspension wire 400 and AF suspension wire 500 set perpendicular to each other as the key media for transmitting power and guidance. This innovation not only reshapes the logic of lens motion control, but also unleashes unprecedented technological dividends in multiple dimensions.

[0051] Simplify the structure and reduce energy consumption

[0052] The decision to abandon ball bearings eliminates the inherent mechanical friction and wear risks of traditional designs. The OIS wire 400 and AF wire 500, with their exceptional rigidity and toughness, not only ensure precise three-dimensional positioning of the lens carrier 300, but also significantly reduce energy consumption and achieve higher energy efficiency due to their near-zero friction. This improvement is particularly crucial during continuous, high-intensity shooting, helping to extend battery life and improve overall device performance.

[0053] Improve accuracy and speed up feedback

[0054] The vertically arranged OIS wire 400 and AF wire 500 not only simplify the internal structure but also open up new paths for signal transmission line layout. Powered by a 3-axis closed-loop control system, this design allows signal lines to be directly connected to core components over the shortest distances, significantly reducing latency between information processing and action execution. This means that whether it's the swift changes of macro close-ups or the rapid tracking of telephoto angles, the electromagnetically driven lens mechanism can react with lightning speed to capture every precious moment, ensuring a new level of image clarity and stability.

[0055] Enhance flexibility and broaden application scenarios

[0056] Compared to the fixed ball bearings of traditional designs, the OIS suspension wire 400 and AF suspension wire 500 provide unprecedented flexibility in the lens assembly. This vertically staggered arrangement, reminiscent of interwoven vines in nature, allows for unlimited rotation and tilt of the lens carrier 300. This is particularly important for specialized photography environments such as drone aerial photography and underwater exploration, easily navigating complex lighting conditions and unstable shooting platforms. This expands the creative boundaries of both professional and amateur photographers, inspiring boundless inspiration.

[0057] In this embodiment, there are four OIS suspension wires 400 , and the four OIS suspension wires 400 are connected to the four corner regions of the carrier 300 .

[0058] The OIS suspension wires 400 are designed with four wires evenly distributed at the four corners of the carrier 300, forming a stable quadrilateral support structure. This layout strategy draws on the principle of stability in geometry: the inherent rigidity of a quadrilateral, which can resist distortion under external forces without losing its shape. Therefore, when the carrier 300 is performing horizontal image stabilization, the four OIS suspension wires 400 create a strong restraining force, ensuring that the carrier 300 remains stable even under severe vibration conditions. This avoids the swing deviation that can be caused by single-point or asymmetric support, significantly improving image clarity and visual quality.

[0059] In this embodiment, there are four AF suspension wires 500 , and the four OIS suspension wires 400 are grouped in pairs and connected to two opposite sides of the carrier 300 .

[0060] The AF wires 500 also utilize four wires, but unlike the OIS wires 400, they are organized into two groups of two, connected in parallel to two pairs of side surfaces of the carrier 300. This grouped suspension method is designed to maximize the sensitivity and accuracy of the autofocus function. By precisely controlling the force applied by the two groups of wires, the carrier 300 can be finely shifted, ensuring rapid switching from near to far shots in milliseconds. Importantly, grouped suspension also minimizes interference between the wires, ensuring a prompt response to every focus command, greatly enhancing the user's shooting experience, especially when shooting macro shots in low-light environments or capturing high-speed motion.

[0061] In this embodiment, the carrier 300 includes a first carrier 310 and a second carrier 320 that are independent of each other. One end of the OIS suspension wire 400 is connected to the base 100 and the other end is connected to the first carrier 310. One end of the AF suspension wire 500 is connected to the base 100 and the other end is connected to the second carrier 320.

[0062] Another highlight of the design is that the carrier 300 is divided into a first carrier 310 and a second carrier 320, which are independent of each other and driven by the OIS suspension wire 400 and the AF suspension wire 500 respectively. In this way, the two key functions of OIS and AF can operate independently, avoiding the functional coupling effect that may occur during complex calculations, ensuring that each function is focused and efficient in its specific tasks. For example, when performing OIS anti-shake operation, the first carrier 310 can move freely without being affected by the AF suspension wire 500, and vice versa. This not only reduces the overall power consumption of the system, but also leaves more room for algorithm optimization, allowing the device to demonstrate better adaptability and imaging quality when facing various complex shooting environments.

[0063] In this embodiment, there are two OIS coils 700, which are perpendicular to each other and located adjacent to the first side of the carrier 300. There are also two OIS magnets 600, each located adjacent to the two OIS coils 700. An AF magnet 800 is located on the first side of the carrier 300, and an AF coil 900 is located adjacent to the AF magnet 800.

[0064] The OIS coil 700 and OIS magnet 600, as well as the AF magnet 800 and AF coil 900, are all concentrated on one side, rather than distributed around the perimeter as is traditional. This innovative layout not only effectively reduces magnetic leakage but also significantly optimizes the spatial configuration between multiple motors. Since magnets and coils are not installed on the other three sides, magnetic field interference between adjacent components is avoided, ensuring that each drive unit can achieve maximum performance in a pure environment, improving the response speed and control accuracy of the entire system. Furthermore, the centralized layout facilitates heat dissipation, reducing the impact of thermal stress on sensitive electronic components and ensuring long-term reliability.

[0065] In this embodiment, two OIS magnets 600 and an AF magnet 800 are fixed to the second carrier 320 , two OIS coils 700 are attached to the lower surface of the first carrier 310 , and the AF coil 900 is disposed on the side of the base 100 .

[0066] The OIS and AF functions are supported by a first carrier 310 and a second carrier 320, respectively. Two OIS magnets 600 are fixed to the second carrier 320, while the OIS coil 700 is tightly attached to the lower surface of the first carrier 310. The AF coil 900 is located on the side of the base 100, adjacent to the AF magnet 800. This separate design reduces the mutual influence between the different functional modules through physical isolation, while also enabling synchronized and coordinated operation of the two systems through precise electromagnetic induction. Especially when shooting high dynamic range (HDR), the independent control and coordinated coordination of the dual carriers 300 ensures that the AF system can quickly and accurately focus even while the lens is engaged in OIS, providing users with a smooth and unobstructed shooting experience and delivering excellent imaging results for both still and video capture.

[0067] In this embodiment, the OIS suspension wire 400 is connected to the first carrier 310 via a spring piece 410 .

[0068] The OIS suspension wire 400 and the first carrier 310 are connected by a spring clip 410. This clip 410 possesses excellent elasticity and resilience, allowing it to quickly recover after deformation due to external forces, ensuring the stability and positioning accuracy of the carrier 300 during complex movements. Furthermore, the inclusion of this clip 410 enhances the device's shock resistance, maintaining excellent filming quality and longevity even in extremely harsh shooting environments, such as outdoor sports and vehicle vibrations. This fully embodies the principles of humanistic care and durable design.

[0069] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electromagnetically driven lens device, characterized in that: It includes a base, a shell, a carrier for supporting the lens, an OIS suspension wire and an AF suspension wire supporting the carrier, an OIS magnet and an OIS coil for driving the carrier, and an AF magnet and an AF coil for driving the carrier. The OIS suspension wire and the AF suspension wire are perpendicular to each other.

2. The electromagnetically driven lens device according to claim 1, wherein: There are four OIS suspension wires, and the four OIS suspension wires are connected to the four corner areas of the carrier.

3. The electromagnetically driven lens device according to claim 1, wherein: There are four AF suspension wires, and the four OIS suspension wires are arranged in pairs and connected to two opposite sides of the carrier.

4. The electromagnetically driven lens device according to claim 1, wherein: The carrier includes a first carrier and a second carrier that are independent of each other. One end of the OIS suspension wire is connected to the base and the other end is connected to the first carrier. One end of the AF suspension wire is connected to the base and the other end is connected to the second carrier.

5. The electromagnetically driven lens device according to claim 4, wherein: There are two OIS coils, which are perpendicular to each other and close to the first side of the carrier. There are also two OIS magnets, which are respectively arranged close to the two OIS coils.

6. The electromagnetically driven lens device according to claim 5, wherein: The AF magnet is disposed on a first side of the carrier, and the AF coil is disposed adjacent to the AF magnet.

7. The electromagnetically driven lens device according to claim 5, wherein: The two OIS magnets and the AF magnet are fixed to the second carrier, the two OIS coils are attached to the lower surface of the first carrier, and the AF coil is arranged on the side of the base.

8. The electromagnetically driven lens device according to claim 4, wherein: The OIS suspension wire is connected to the first carrier via a spring piece.

9. A camera, characterized in that: The invention comprises the electromagnetically driven lens device according to any one of claims 1 to 8.

10. An electronic device, characterized in that: Comprising the camera as claimed in claim 9.

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