Long-focus driving device, camera and electronic equipment

Abstract

The utility model relates to a long-focus driving device, a camera and electronic equipment, and the long-focus driving device comprises a pedestal, a housing, a prism carrier, an OIS spring and an OIS ball bearing the prism carrier, an OIS magnet and an OIS coil used for driving the prism carrier, an AF carrier, an AF ball bearing the AF carrier, and an AF magnet and an AF coil used for driving the AF carrier. And the OIS spring is horizontally placed on the base and is in contact with the bottom of the prism carrier. According to the long-focus driving device provided by the utility model, the OIS spring is horizontally arranged at the bottom of the prism carrier, so that the prism carrier can be directly inserted into the base from the upper part without complicated overturning operation, the assembly steps are greatly simplified, and automatic assembly becomes possible. Due to the realization of automatic assembly, the production efficiency is improved, and manual intervention is greatly reduced, so that the error rate and the rework rate caused by human factors are reduced.

Description

Technical Field

[0001] The utility model relates to the field of lenses, and more particularly to a telephoto driving device, a camera and an electronic device. Background Art

[0002] In the existing periscope structure design, the elastic sheet is usually arranged on the side or at a 45-degree inclined position. This layout brings an obvious challenge when assembling the elastic sheet and the OIS (Optical Image Stabilizer) carrier: an inevitable flipping operation is required during the assembly process. This step not only increases the complexity of manual labor but also seriously hinders the realization of automated assembly. The difficulty of automated assembly mainly stems from the fact that the flipping action is difficult to be accurately simulated by a robotic arm or other automated equipment, which leads to a reduction in production efficiency and an increase in production costs. At the same time, it also increases the risk of product damage during the production process. Summary of the Utility Model

[0003] In view of this, the utility model provides a telephoto driving device, in which the OIS spring is horizontally arranged at the bottom of the prism carrier, so that the prism carrier can be directly inserted into the base from above without complex flipping operations, greatly simplifying the assembly steps and making automated assembly possible. The realization of automated assembly not only improves production efficiency but also significantly reduces manual intervention, thereby reducing the error rate and rework rate caused by human factors.

[0004] The purpose of the utility model is achieved by the following technical solutions:

[0005] A telephoto driving device includes a base, a housing, a prism carrier, an OIS spring and OIS balls for supporting the prism carrier, an OIS magnet and an OIS coil for driving the prism carrier, an AF carrier, AF balls for supporting the AF carrier, an AF magnet and an AF coil for driving the AF carrier. The OIS spring is horizontally placed on the base and contacts the bottom of the prism carrier.

[0006] In this design, the OIS spring is horizontally arranged at the bottom of the prism carrier, and this innovation in layout brings significant advantages to the assembly process of the entire device.

[0007] First of all, the horizontal arrangement of the OIS spring enables the prism carrier to be directly inserted into the base from above without complex flipping operations. This intuitive assembly method greatly simplifies the assembly steps and makes automated assembly possible. The realization of automated assembly not only improves production efficiency but also significantly reduces manual intervention, thereby reducing the error rate and rework rate caused by human factors.

[0008] Secondly, the advantages of this design are also reflected in its effective control of assembly costs. By reducing complex manual operations, enterprises can save a large amount of human resource costs. At the same time, due to the continuous and stable operation of automated equipment, the scale effect of production also reduces the manufacturing cost per unit product.

[0009] In addition, the horizontally placed OIS spring ensures the stability of the prism carrier during the entire driving process. It can provide uniform and continuous supporting force to ensure that the prism carrier maintains precise alignment when moving, which is crucial for ensuring imaging quality.

[0010] In summary, the design of this long-focus driving device not only optimizes the assembly process and improves production efficiency, but also effectively controls the overall production cost by reducing labor requirements and error rates. At the same time, its performance in ensuring product performance cannot be ignored, providing users with a clearer and more stable image experience. The implementation of this design will undoubtedly set a new benchmark in the field of optical equipment manufacturing.

[0011] Preferably, a hemispherical groove is dug at the center of the bottom of the prism carrier, and a part of the OIS ball is fitted with the hemispherical groove.

[0012] A hemispherical groove is dug at the center of the bottom of the prism carrier, and a part of the OIS ball is closely fitted with the hemispherical groove. The OIS ball can rotate relative to the hemispherical groove, thus maintaining the stability of the optical system and ensuring that the lens can capture clear and stable images in various environments.

[0013] Preferably, a hollow is provided in the middle of the OIS spring, and a part of the OIS ball passes through the hollow and contacts the base.

[0014] A hollow area is provided in the middle of the OIS spring. This design not only reduces the overall weight of the spring, but also provides necessary space for the movement of the OIS ball. A part of the OIS ball passes through this hollow and contacts the base, ensuring that the OIS ball can roll freely on the base without affecting the elastic effect of the spring, thereby achieving precise control of the position of the prism carrier. This precise control is crucial for maintaining the focusing accuracy and imaging quality of the optical system.

[0015] Preferably, the prism carrier is provided with an inclined surface, and a prism is mounted on the inclined surface.

[0016] The prism carrier is provided with an inclined surface, which is specially designed for installing the prism. The existence of the inclined surface not only facilitates the installation and fixation of the prism, but also through the angle design of the inclined surface, the refraction path of light can be effectively controlled, and the focusing effect of light can be optimized. This design helps to improve the imaging quality of the entire optical system. Especially in long focal length applications, it can significantly reduce distortion and chromatic aberration, providing a more real and delicate picture presentation.

[0017] Preferably, an OIS groove is dug on the side surface of the prism carrier, and the OIS magnet is embedded in the OIS groove.

[0018] An OIS groove is ingeniously dug on the side surface of the prism carrier, and this design detail reflects a high degree of attention to the performance of the optical image stabilization (OIS) system. The OIS magnet is precisely embedded in these OIS grooves, forming a stable connection between the magnet and the prism carrier.

[0019] Preferably, there are three OIS grooves, namely the first groove on the left side of the inclined surface, the second groove on the right side of the inclined surface, and the third groove on the back of the inclined surface.

[0020] The OIS grooves are divided into three, located on the left, right, and back of the inclined surface respectively. This distribution ensures that no matter in which direction the camera vibrates, there is a corresponding magnet that can respond in time to provide an equalized anti-shake torque. Such a three-way layout greatly enhances the effectiveness of optical image stabilization. Especially in handheld shooting or unstable environments, it can significantly improve the clarity and stability of the image.

[0021] Preferably, an AF groove is dug on the side surface of the AF carrier, and the AF magnet is embedded in the AF groove. There are two AF grooves, located on the left and right sides of the AF carrier respectively.

[0022] An AF groove is also dug on the side surface of the AF carrier, and the AF magnet is embedded in these grooves. This design provides a solid foundation for the efficient operation of the autofocus (AF) system. The two positions of the AF grooves are located on the left and right sides of the AF carrier respectively. Such a symmetrical layout helps to provide a balanced driving force during the autofocus process, ensuring that the lens can quickly and accurately adjust to the best focus position. The design of the bilateral AF grooves also has structural stability. It reduces the vibration and offset of the AF carrier during high-speed focusing, thereby improving the accuracy and repeatability of focusing. This is particularly important when capturing dynamic scenes or shooting in low light conditions, as it can ensure that a sharp and clear image is obtained every time the shutter is pressed.

[0023] Preferably, the ratio of the chord width to the thickness of the OIS spring is 0.5 - 0.4.

[0024] After placing the OIS spring at the bottom, the OIS nodding direction becomes rotation around the y-axis, and the shaking direction is rotation around the x-axis. The key design point of this OIS spring is to make the K in the y-axis direction large enough to support the weight of the Prism holder, while the torsional K in the y-axis direction is small enough that the magnetic force can rotate the movable part. Therefore, the OIS spring needs to be specially designed. The chord width of a conventional OIS spring needs to be greater than the thickness, while in this solution, the chord width needs to be less than the thickness, and the ratio of the chord width to the thickness is 0.5 - 0.4, so as to meet the performance requirements.

[0025] A camera, comprising the telephoto driving device as described above.

[0026] An electronic device, comprising the camera as described above.

[0027] The beneficial effects of the present utility model compared with the prior art are:

[0028] In the telephoto driving device of the present utility model, the OIS spring is horizontally arranged at the bottom of the prism carrier, and this innovation in layout brings significant advantages to the assembly process of the entire device.

[0029] First of all, the horizontal arrangement of the OIS spring enables the prism carrier to be directly inserted into the base from above without complex flipping operations. This intuitive assembly method greatly simplifies the assembly steps and makes automated assembly possible. The realization of automated assembly not only improves production efficiency but also significantly reduces manual intervention, thereby reducing the error rate and rework rate caused by human factors.

[0030] Secondly, the advantages of this design are also reflected in its effective control of assembly costs. Due to the reduction of complex manual operations, enterprises can save a large amount of human resource costs. At the same time, because automated equipment can work continuously and stably, the scale effect of production also reduces the manufacturing cost per unit product.

[0031] In addition, the horizontally placed OIS spring bar ensures the stability of the prism carrier during the entire driving process. It can provide uniform and continuous supporting force to ensure that the prism carrier maintains precise alignment when moving, which is crucial for ensuring imaging quality.

[0032] In summary, the design of this telephoto driving device not only optimizes the assembly process and improves production efficiency but also effectively controls the overall production cost by reducing labor requirements and error rates. At the same time, its performance in ensuring product performance cannot be ignored, providing users with a clearer and more stable image experience. The implementation of this design will undoubtedly set a new benchmark in the field of optical equipment manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present application and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0034] Figure 1 It is an exploded view of a long - focus driving device according to an embodiment of the present utility model.

[0035] Figure 2 It is an exploded view of a long - focus driving device from another perspective according to an embodiment of the present utility model.

[0036] Figure 3 It is an assembly schematic diagram of an OIS spring and a prism carrier according to an embodiment of the present utility model.

[0037] Figure 4 It is a schematic diagram of the rotation direction of an OIS spring according to an embodiment of the present utility model.

[0038] Figure 5 It is a diagram showing the relationship between the chord width and thickness of an OIS spring according to an embodiment of the present utility model. Detailed implementation manners

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some, rather than all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application to be protected, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present application.

[0041] It should be noted that similar reference numerals and letters denote similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of the embodiments of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", etc. is based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship in which the product of this application is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0042] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0043] The technical solutions in the present application will be described below with reference to the figures.

[0044] This embodiment provides a long-focus driving device, including a base 100, a housing 200, a prism carrier 300, an OIS spring 310 and OIS balls 320 for supporting the prism carrier 300, an OIS magnet 330 and an OIS coil 340 for driving the prism carrier 300, an AF carrier 400, AF balls 410 for supporting the AF carrier 400, an AF magnet 420 and an AF coil 430 for driving the AF carrier 400. The OIS spring 310 is horizontally placed on the base 100 and contacts the bottom of the prism carrier 300.

[0045] In this design, the OIS spring 310 is horizontally arranged at the bottom of the prism carrier 300, and this innovation in layout brings significant advantages to the assembly process of the entire device.

[0046] First of all, the horizontal arrangement of the OIS spring 310 enables the prism carrier 300 to be directly inserted into the base 100 from above without complex flipping operations. This intuitive assembly method greatly simplifies the assembly steps and makes automated assembly possible. The realization of automated assembly not only improves production efficiency but also significantly reduces manual intervention, thereby reducing the error rate and rework rate caused by human factors.

[0047] Secondly, the advantages of this design are also reflected in its effective control of assembly costs. Due to the reduction of complex manual operations, enterprises can save a large amount of human resource costs. At the same time, since automated equipment can work continuously and stably, the scale effect of production also reduces the manufacturing cost per unit product.

[0048] In addition, the horizontally placed OIS elastic strip ensures the stability of the prism carrier 300 during the entire driving process. It can provide uniform and continuous supporting force, ensuring that the prism carrier 300 maintains precise alignment when moving, which is crucial for ensuring imaging quality.

[0049] In summary, the design of this long-focus driving device not only optimizes the assembly process and improves production efficiency, but also effectively controls the overall production cost by reducing labor requirements and lowering error rates. At the same time, its performance in ensuring product performance cannot be ignored, providing users with a clearer and more stable image experience. The implementation of this design will undoubtedly set a new benchmark in the field of optical device manufacturing.

[0050] In this embodiment, a hemispherical groove 321 is dug at the center of the bottom of the prism carrier 300, and a part of the OIS ball 320 fits with the hemispherical groove 321.

[0051] A hemispherical groove is dug at the center of the bottom of the prism carrier 300, and a part of the OIS ball 320 fits tightly with the hemispherical groove. The OIS ball 320 can rotate relative to the hemispherical groove, thus maintaining the stability of the optical system and ensuring that the lens can capture clear and stable images in various environments.

[0052] In this embodiment, a hollow 311 is provided in the middle of the OIS spring 310, and a part of the OIS ball 320 passes through the hollow 311 and contacts the base 100.

[0053] A hollow 311 area is provided in the middle of the OIS spring 310. This design not only reduces the overall weight of the spring, but also provides necessary space for the movement of the OIS ball 320. A part of the OIS ball 320 passes through this hollow 311 and contacts the base 100, ensuring that the OIS ball 320 can roll freely on the base 100 without affecting the elastic effect of the spring, thereby achieving precise control of the position of the prism carrier 300. This precise control is crucial for maintaining the focusing accuracy and imaging quality of the optical system.

[0054] In this embodiment, the prism carrier 300 is provided with an inclined surface 350, and a prism 351 is installed on the inclined surface 350.

[0055] The prism carrier 300 is provided with an inclined surface 350, which is specifically designed for installing the prism. The existence of the inclined surface 350 not only facilitates the installation and fixation of the prism, but also effectively controls the refraction path of light and optimizes the focusing effect of light through the angle design of the inclined surface 350. This design helps to improve the imaging quality of the entire optical system. Especially in long-focus applications, it can significantly reduce distortion and chromatic aberration and provide a more real and delicate picture presentation.

[0056] In this embodiment, an OIS groove 331 is dug on the side surface of the prism carrier 300, and the OIS magnet 330 is embedded into the OIS groove 331.

[0057] An OIS groove 331 is ingeniously dug on the side surface of the prism carrier 300, and this design detail reflects a high degree of attention to the performance of the optical image stabilization (OIS) system. The OIS magnet 330 is precisely embedded into these OIS grooves 331, forming a firm connection between the magnet and the prism carrier 300.

[0058] In this embodiment, there are three OIS grooves 331, namely the first groove located on the left side of the inclined surface 350, the second groove located on the right side of the inclined surface 350, and the third groove located on the back of the inclined surface 350.

[0059] The OIS grooves 331 are divided into three, located on the left side, right side, and back of the inclined surface 350 respectively. This distribution ensures that no matter in which direction the camera vibrates, there is a corresponding magnet that can respond in time to provide a balanced anti-shake torque. Such a three-way layout greatly enhances the effectiveness of optical image stabilization, especially in handheld shooting or unstable environments, and can significantly improve the clarity and stability of images.

[0060] In this embodiment, an AF groove 421 is dug on the side surface of the AF carrier 400, and the AF magnet 420 is embedded into the AF groove 421. There are two AF grooves 421, located on the left and right sides of the AF carrier 400 respectively.

[0061] An AF groove 421 is also dug on the side surface of the AF carrier 400, and the AF magnet 420 is embedded into these grooves. This design provides a solid foundation for the efficient operation of the autofocus (AF) system. The two positions of the AF groove 421 are located on the left and right sides of the AF carrier 400 respectively. Such a symmetric layout helps to provide a balanced driving force during the autofocus process, ensuring that the lens can be quickly and accurately adjusted to the optimal focus position. The design of the bilateral AF groove 421 also has structural stability. It reduces the vibration and offset of the AF carrier 400 during the high-speed focusing process, thereby improving the focusing accuracy and repeatability. This is particularly important when capturing dynamic scenes or shooting under low light conditions, as it can ensure that a sharp and clear image is obtained every time the shutter is pressed.

[0062] In this embodiment, the ratio of the chord width to the thickness of the OIS spring 310 is 00.5 - 00.4.

[0063] After placing the OIS spring 310 at the bottom, the OIS shaking direction becomes rotation around the y-axis, and the nodding direction is rotation around the x-axis. The key design point of this OIS spring 310 is to make the K in the y-axis direction large enough to support the weight of the Prism holder. At the same time, the torsional K in the y-axis direction should be small, and the magnetic force is sufficient to rotate the movable part. Therefore, the OIS spring 310 needs to be specially designed. The chord width of the conventional OIS spring 310 needs to be greater than the thickness, while in this solution, the chord width needs to be less than the thickness, and the ratio of the chord width to the thickness is 00.5 - 00.4, so as to meet the performance requirements.

[0064] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A telephoto drive device, comprising a base, a housing, a prism carrier, an OIS spring and an OIS ball bearing the prism carrier, an OIS magnet and an OIS coil for driving the prism carrier, an AF carrier, an AF ball bearing the AF carrier, and an AF magnet and an AF coil for driving the AF carrier, wherein: The OIS spring is placed horizontally on the base and contacts the bottom of the prism carrier.

2. The telephoto driving device according to claim 1, characterized in that: A hemispherical groove is dug at the bottom center of the prism carrier, and a part of the OIS ball is fitted in the hemispherical groove.

3. The telephoto driving device according to claim 2, characterized in that: A hollow is provided in the middle of the OIS spring, and a portion of the OIS ball passes through the hollow and contacts the base.

4. The telephoto driving device according to claim 1, characterized in that: The prism carrier is provided with an inclined surface, and the prism is mounted on the inclined surface.

5. The telephoto driving device according to claim 4, characterized in that: An OIS groove is dug on the side of the prism carrier, and the OIS magnet is embedded in the OIS groove.

6. The telephoto driving device according to claim 5, characterized in that: There are three OIS grooves, namely a first groove located on the left side of the inclined surface, a second groove located on the right side of the inclined surface, and a third groove located on the back side of the inclined surface.

7. The telephoto driving device according to claim 1, characterized in that: An AF groove is dug on the side of the AF carrier, and the AF magnet is embedded in the AF groove. There are two AF grooves, which are respectively located on the left and right sides of the AF carrier.

8. The telephoto driving device according to claim 1, characterized in that: The ratio of the chord width to the thickness of the OIS spring is 0.5-0.

4.

9. A camera, characterized in that: It comprises a telephoto drive device as described in any one of claims 1-8.

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

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