A long-stroke periscope lens and lens module

Abstract

This utility model relates to the field of optical image stabilization technology, and particularly to a long-stroke periscope lens and lens module, which includes a base, a lens, a prism assembly, and a guide assembly. The base has a first end and a second end opposite to each other. The lens is movably mounted on the base and close to the first end. A drive assembly is provided on one side wall of the lens. The prism assembly is movably mounted on the base and is located on the side of the lens facing the second end. The guide assembly includes a first guide member and a second guide member. The first guide member is mounted on the base and movably connected to the bottom of the lens. The second guide member is movably mounted on the side wall of the lens opposite to the drive assembly and is connected to the base. By mounting the second guide member on the side wall opposite to the drive assembly, when the lens moves to focus, the second guide member can counteract the lateral thrust generated by the lens due to the influence of the magnetic field, ensuring the accuracy and stability of the lens during long-stroke focusing.

Description

Technical Field

[0001] This utility model relates to the field of optical image stabilization technology, and in particular to a long-stroke periscope lens and lens module. Background Technology

[0002] With the advancement of technology, people's demand for the camera function of portable electronic devices (such as tablets, smartphones, etc.) is still growing rapidly. For example, in order to achieve both long-distance and close-range zoom shooting functions, periscope lenses are required to have a long stroke to realize zoom.

[0003] Existing long-stroke periscope lenses have a long total lens travel. When the lens is in motion, or at the starting and ending positions, it may be affected by magnetic fields, which may generate a large lateral thrust. This may lead to lens shake, derailment, or even tipping over, affecting the shooting experience and image quality.

[0004] It should be noted that the information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model, and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] To address the issues of potential shaking, derailment, or tilting in existing long-stroke periscope lenses, this invention provides a long-stroke periscope lens comprising a base, a lens, a prism assembly, and a guide assembly.

[0006] The base has a first end and a second end opposite to each other. The lens is movably disposed on the base and close to the first end. A driving assembly is provided on one side wall of the lens. The prism assembly is movably disposed on the base and is located on the side of the lens facing the second end.

[0007] The guiding assembly includes a first guide member and a second guide member. The first guide member is disposed on the base and movably connected to the bottom of the lens. The second guide member is movably disposed on the lens and located on a side wall opposite to the driving assembly. The second guide member is connected to the base.

[0008] Furthermore, the long-stroke periscope lens also includes a second magnet, and a magnetic guide plate is provided on the base, with the second magnet disposed on the bottom of the lens facing the magnetic guide plate.

[0009] Furthermore, the number of the second magnets can be two or more.

[0010] Furthermore, the long-stroke periscope lens also includes a drive plate attached to the base.

[0011] Furthermore, the driving assembly includes a first magnet and a first coil. The first magnet is disposed on one side wall of the lens, and the first coil is disposed on the driving plate. The position of the first coil corresponds to that of the first magnet, and the first coil is electrically connected to the driving plate.

[0012] Furthermore, the prism assembly includes a prism base, a prism, a ball bearing, and a spring. The prism base is movably mounted on the base, and the prism is mounted on the prism base. The prism base has a ball bearing groove on its end face away from the prism. The ball bearing is movably mounted in the ball bearing groove and protrudes from the ball bearing groove, and is movably connected to the base. The spring is located on the side of the prism base away from the prism, and its two ends are respectively connected to the prism base and the base.

[0013] Furthermore, a third magnet and a fourth magnet are respectively provided on both sides and the bottom of the prism holder, and a second coil and a third coil are provided on the drive plate corresponding to the positions of the third magnet and the fourth magnet.

[0014] Furthermore, the long-stroke periscope lens also includes several buffer components, which are disposed on the base.

[0015] Furthermore, the long-stroke periscope lens also includes a top cover that fits onto the base.

[0016] Furthermore, this utility model also provides a lens module comprising any of the above-mentioned long-stroke periscope lenses.

[0017] Based on the above, the present invention provides a long-stroke periscope lens and lens module. Compared with the prior art, it uses a first guide and a second guide as the lens guide, and sets the second guide on the side wall opposite the lens and the drive assembly. When the lens moves to focus, the second guide can counteract the lateral thrust generated by the lens due to the influence of the magnetic field, avoiding problems such as lens shaking, derailment or even tilting, ensuring the accuracy and stability of the lens during long-stroke focusing, and improving the shooting experience and image quality. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Unless otherwise specified, the positional relationships shown in the drawings in the following description are based on the direction in which the components are drawn in the figures.

[0019] Figure 1 An exploded view of a long-stroke periscope lens according to an embodiment of the present invention;

[0020] Figure 2 An exploded view of the lens and the second magnet provided in an embodiment of the present invention;

[0021] Figure 3 A cross-sectional structural diagram of a lens and guide assembly provided in an embodiment of the present invention;

[0022] Figure 4 A force diagram of a lens and guide assembly provided in an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of a drive board provided in an embodiment of the present invention;

[0024] Figure 6 An exploded view of the prism assembly provided in one embodiment of the present invention;

[0025] Figure 7 A cross-sectional structural diagram of the lens and guide assembly provided in the second embodiment of this utility model;

[0026] Figure 8 for Figure 7 A magnified schematic diagram of the structure at point N.

[0027] Figure label:

[0028] Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They 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, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Additionally, the term "comprising" and any variations thereof mean "at least comprising."

[0031] Please see Figure 1 , Figure 1 This is an exploded structural diagram of a long-stroke periscope lens provided in one embodiment of the present invention.

[0032] To address the technical problems of potential shaking, derailment, or tilting in existing long-stroke periscope lenses, or to achieve at least one or more of the aforementioned advantages, this utility model provides a long-stroke periscope lens in one embodiment. As shown in the figure, the long-stroke periscope lens includes a base 10, a lens 20, a prism assembly 30, and a guide assembly 40.

[0033] The base 10 provides a basic mounting space and foundation for the lens 20, prism assembly 30, and guide assembly 40. The base 10 can be injection molded from materials such as plastic. In a specific implementation, the base 10 has a first end 11 and a second end 12. The first end 11 has an opening to facilitate light emission for imaging.

[0034] The lens 20 is movably mounted on the base 10 and close to the first end 11. The lens 20 can move relative to the base 10 along the Z-axis, thereby achieving the purpose of adjusting the focal length and zooming. Preferably, the movement stroke of the lens 20 can be 7mm, enabling this long-stroke periscope lens to simultaneously possess the functions of long-distance zoom shooting and close-distance zoom shooting.

[0035] A drive assembly 50 is provided on one side wall of the lens 20. The drive assembly 50 can controllably drive the lens 20 to move along the Z-axis, thereby achieving the purpose of adjusting the focal length and zooming.

[0036] The prism assembly 30 is movably mounted on the base 10, and is located on the side of the lens 20 facing the second end 12. Specifically, the prism assembly 30 and the lens 20 are on the same optical axis. The prism assembly 30 can fold the incident light rays before they enter the lens 20, and then exit through the opening at the first end 11 to form an image, thereby achieving the purpose of folding the optical axis and increasing the zoom magnification.

[0037] The guiding assembly 40 includes a first guide member 41 and a second guide member 42. The first guide member 41 and the second guide member 42 are respectively disposed between the base 10 and the lens 20. When the driving assembly 50 drives the lens 20 to move along the Z-axis, the first guide member 41 and the second guide member 42 can provide guiding capability for the lens 20, so that the lens 20 moves accurately, smoothly and smoothly along the Z-axis, thereby achieving the purpose of adjusting the focal length and zooming.

[0038] Preferably, the first guide member 41 and the second guide member 42 can be metal guide rods with smooth surfaces. Of course, the first guide member 41 and the second guide member 42 can also be made of other existing materials, as long as they can provide a smooth and stable guide for the lens 20, all of which are within the scope of protection of this application.

[0039] Taking the illustration as an example, the first guide member 41 is movably disposed on the base 10 and movably connected to the bottom of the lens 20. In a specific implementation, the base 10 has a first guide groove 13 arranged along the Z-axis on the side near the drive assembly 50, and the first guide member 41 is movably disposed in the first guide groove 13. The lens 20 has a first guide mating groove 21 at the position corresponding to the first guide groove 13. The first guide member 41 is slidably connected to the first guide mating groove 21.

[0040] The second guide member 42 is disposed on the lens 20 and located on the side wall opposite to the drive assembly 50, that is, the second guide member 42 and the drive assembly 50 are disposed on the two side walls of the lens 20 opposite to each other. In a specific implementation, the inner side wall of the base 10 has a second guide groove 14 disposed along the Z-axis, and the second guide member 42 is movably disposed in the second guide groove 14. The lens 20 has a second guide mating groove 22 at a position corresponding to the second guide groove 14. The second guide member 42 is slidably connected to the second guide mating groove 22.

[0041] When the drive assembly 50 is controlled and the drive lens 20 moves along the Z-axis, the first guide 41 and the second guide 42 are slidably connected to the lens 20 to provide guidance for the lens 20, so that the lens 20 moves accurately, smoothly and smoothly along the Z-axis to achieve the purpose of adjusting the focal length and zooming.

[0042] Please combine Figure 1 See Figures 2-4Because the lens 20 has a long stroke, the drive assembly 50 often uses a bipolar magnet, which causes the lens 20 to generate a lateral thrust in the X-axis direction due to the magnetic field of the drive assembly 50 during its movement. Or lateral thrust in the negative X-axis direction .

[0043] At this time, the second guide member 42 is positioned on the opposite side wall of the drive assembly 50, which can provide limiting and torque. Used to counteract lateral thrust To avoid lateral thrust on lens 20 The impact of this can lead to problems such as shaking, derailment, and even rollover.

[0044] By placing the second guide member 42 on the side wall opposite to the drive assembly 50, the second guide member 42 can counteract the lateral thrust of the lens 20 caused by the magnetic field during the focusing process of the lens 20. This avoids problems such as lens 20 shaking or derailment, ensures the accuracy and stability of lens 20 during long-stroke focusing, and improves the shooting experience and image quality.

[0045] Building upon the above, the long-stroke periscope lens further includes a second magnet 60. A magnetic guide plate 70 is provided on the base 10, and the second magnet 60 is disposed on the bottom of the lens 20 facing the magnetic guide plate 70. Preferably, the number of second magnets 60 is two or more. This embodiment uses two magnets as an example for illustration.

[0046] Taking the diagram as an example, when lens 20 is subjected to a lateral thrust... When affected by the presence of the first guide member 41, the lateral thrust It is easy to generate a rotational torque with the first guide member 41 as the center. This leads to lens 20 moving along the torque. The direction of the lens was reversed, which eventually caused the lens 20 to flip over.

[0047] To counteract the torque A magnetic plate 70 is provided on the base 10, and two second magnets 60 are provided at the bottom of the lens 20. Magnetic attraction is generated between the second magnets 60 and the magnetic plate 70. and To generate torque This prevents the lens 20 from tipping over. Simultaneously, the second magnet 60 reduces the force on the second guide member 42, preventing excessive force that could cause pits in the second guide groove 14 or the second guide mating groove 22.

[0048] Of course, it is understandable that the size of the magnetic plate 70 should be able to cover the range of motion of the lens 20, so that no matter how the lens 20 moves, a stable magnetic attraction force can be generated between the second magnet 60 and the magnetic plate 70. and .

[0049] In some preferred embodiments, please refer to Figure 1 See Figure 5 The long-stroke periscope lens also includes a driver board 80. The driver board 80 is attached to the base 10. The driver board 80 can be a flexible circuit board or a PCB board with embedded power and signal lines.

[0050] In a specific implementation, the drive assembly 50 includes a first magnet 51 and a first coil 52. The first magnet 51 is disposed on one side wall of the lens 20. Specifically, the first magnet 51 is disposed on the side wall of the lens 20 opposite to the second guide member 42. The first coil 52 is disposed on the drive plate 80, and the position of the first coil 52 corresponds to that of the first magnet 51. The first coil 52 is electrically connected to the drive plate 80.

[0051] When the drive board 80 controls the first coil 52 to be energized, it generates an Ampere force under the action of the magnetic field of the first magnet 51 to cut the magnetic field lines, thereby pushing the lens 20 to move relative to the base 10 along the Z-axis, so as to achieve the purpose of adjusting the focal length and zooming.

[0052] Understandably, in order to accurately monitor and control the movement of lens 20 in the Z-axis direction, a sensor IC (not shown) can be set on the first coil 52, which can accurately read and control the movement of lens 20 to improve the accuracy of zoom and avoid image blurring caused by poor zoom accuracy.

[0053] In some preferred embodiments, such as Figure 6 As shown, the prism assembly 30 includes a prism base 31, a prism 32, a ball bearing 33, and a spring 34. The prism base 31 is movably mounted on the base 10. The prism 32 is mounted on the prism base 31 and is on the same optical axis as the lens 20.

[0054] The prism holder 31 has a ball groove 35 on the end face away from the prism 32. The ball 33 is disposed in the ball groove 35 and protrudes from the ball groove 35 and is movably connected to the base 10. The spring 34 is located on the side of the prism holder 31 away from the prism 32, and the two ends of the spring 34 are respectively connected to the prism holder 31 and the base 10.

[0055] In practice, a third magnet 36 is provided on each side of the prism mount 31, and a second coil 81 is provided on the drive plate 80 at the position corresponding to the third magnet 36. The second coil 81 is electrically connected to the drive plate 80. When the second coil 81 is energized, it generates an Ampere force under the magnetic field of the third magnet 36, causing it to cut magnetic field lines. This, in turn, drives the prism mount 31 to rotate the prism 32 around the ball bearing 33 at a certain angle along the X-axis, thereby achieving image stabilization and improving image quality.

[0056] Furthermore, a fourth magnet 37 is provided at the bottom of the prism mount 31. A third coil 82 is provided on the drive plate 80 at the position corresponding to the fourth magnet 37. The third coil 82 is electrically connected to the drive plate 80. When the third coil 82 is energized, it generates an Ampere force under the magnetic field of the fourth magnet 37, causing it to cut magnetic field lines. This, in turn, drives the prism mount 31 to rotate the prism 32 around the ball bearing 33 at a certain angle along the Y-axis, thereby achieving image stabilization and improving image quality.

[0057] Similarly, in order to accurately monitor and control the rotation angles of prism mount 31 and prism 32 in the X-axis and / or Y-axis directions, sensor ICs (not shown) can be installed on the second coil 81 and the third coil 82. The sensor ICs can accurately read and control the rotation angles of prism mount 31 and prism 32 to improve the accuracy of image stabilization and avoid image blurring caused by poor image stabilization accuracy.

[0058] The second embodiment of this utility model also provides a long-stroke periscope lens, such as... Figure 7 As shown, the difference between the long-stroke periscope lens of this embodiment and the long-stroke periscope lens described in the first embodiment above is that:

[0059] The first guide component 41 and the second guide component 42 are integrally molded with the base 10. Specifically, the first guide component 41 and the second guide component 42 can be injection molded with the base 10 using materials such as plastic, which reduces the cost of parts and assembly processes while ensuring that the lens 20 will not shake, derail, or tip over.

[0060] Better, such as Figure 8 As shown, since the first guide member 41 and the second guide member 42 are integrally injection molded with the base 10, in order to facilitate demolding after injection molding and avoid damage to the second guide member 42 during the demolding process, the second guide member 42 has a demolding slope 90 on the side facing the bottom of the base 10. Preferably, the angle α of the demolding slope 90 is 0°-20°.

[0061] In some preferred embodiments, the long-stroke periscope lens further includes several buffers 100. The buffers 100 are disposed on the base 10. The buffers 100 can eliminate hard collisions between the lens 20, the prism assembly 30, and the base 10, avoiding the impact of noise and vibration caused by the collisions on zoom, focus, and image stabilization functions, thereby improving image quality.

[0062] In some preferred embodiments, the long-stroke periscope lens also includes a top cover 110. The top cover 110 covers the base 10.

[0063] In some preferred embodiments, the present invention also provides a lens module comprising any of the above-mentioned long-stroke periscope lenses.

[0064] In summary, the long-stroke periscope lens and lens module provided by this utility model, compared with the prior art, uses a first guide and a second guide as the lens guide, and sets the second guide on the side wall opposite the lens and the driving component. When the lens moves to focus, the second guide can counteract the lateral thrust generated by the lens due to the influence of the magnetic field, avoiding the problems of lens shaking, derailment or even tilting, ensuring the accuracy and stability of the lens during long-stroke focusing, and improving the shooting experience and image quality.

[0065] Although this document frequently uses terms such as guide components and guide parts, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

[0066] Furthermore, those skilled in the art should understand that although many problems exist in the prior art, each embodiment or technical solution of this utility model can be improved in only one or a few aspects, without necessarily solving all the technical problems listed in the prior art or background art simultaneously. Those skilled in the art should understand that any content not mentioned in a claim should not be construed as a limitation on that claim.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A long-stroke periscopic lens characterized by: include A base having opposing first and second ends; A lens, which is movably mounted on the base and close to the first end, has a driving assembly on one side wall of the lens; A prism assembly, movably mounted on the base, the prism assembly being located on the side of the lens facing the second end; A guiding assembly includes a first guide member and a second guide member. The first guide member is disposed on the base and movably connected to the bottom of the lens. The second guide member is movably disposed on the lens and located on a side wall opposite to the driving assembly. The second guide member is connected to the base.

2. The long-stroke periscopic lens according to claim 1, characterized in that: The long-stroke periscope lens also includes a second magnet, and a magnetic guide plate is provided on the base. The second magnet is disposed on the bottom of the lens on the side facing the magnetic guide plate.

3. The long-stroke periscopic lens according to claim 2, characterized in that: The number of the second magnet can be two or more.

4. The long-stroke periscopic lens according to claim 1, characterized in that: The long-stroke periscope lens also includes a drive board attached to the base.

5. The long-stroke periscopic lens according to claim 4, characterized in that: The driving assembly includes a first magnet and a first coil. The first magnet is disposed on one side wall of the lens, and the first coil is disposed on the driving plate. The first coil is positioned corresponding to the first magnet, and the first coil is electrically connected to the driving plate.

6. The long-stroke periscopic lens according to claim 4, characterized in that: The prism assembly includes a prism base, a prism, a ball bearing, and a spring. The prism base is movably mounted on the base, and the prism is mounted on the prism base. The prism base has a ball bearing groove on its end face away from the prism. The ball bearing is movably mounted in the ball bearing groove and protrudes from the ball bearing groove, and is movably connected to the base. The spring bearing is located on the side of the prism base away from the prism, and its two ends are respectively connected to the prism base and the base.

7. The long-stroke periscopic lens according to claim 6, characterized in that: The prism base is provided with a third magnet and a fourth magnet on its two sides and bottom, respectively, and the drive plate is provided with a second coil and a third coil at the positions corresponding to the third magnet and the fourth magnet.

8. The long-stroke periscopic lens of claim 1, wherein: The long-stroke periscope lens also includes several buffer components, which are disposed on the base.

9. The long-stroke periscopic lens of claim 1, wherein: The long-stroke periscope lens also includes a top cover that fits onto the base.

10. A lens module, characterized by: It includes a long-stroke periscope lens as described in any one of claims 1-9.

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