Focusing structure and lens

Abstract

The invention discloses a focusing structure and a lens, and relates to the technical field of shooting equipment, and the focusing structure comprises a mounting frame body, a magnet assembly and two adjusting assemblies. Wherein the mounting frame body is provided with a mounting cavity extending in the vertical direction; a plurality of magnet assemblies are arranged, and the plurality of magnet assemblies are alternately mounted on the inner wall of the mounting cavity around the axis of the mounting cavity, so that a fixed magnetic field is formed in the mounting cavity; the two adjusting assemblies are each provided with a coil part and a lens installation part, the coil parts are arranged on the lens installation parts, and the lens installation parts are movably installed on the inner walls of the lens installation parts in the vertical direction. When the coil part is electrified, the fixed magnetic field and a magnetic field formed by the coil part interact with each other, so that the lens mounting piece is driven to move on the inner wall of the mounting cavity in the vertical direction; according to the invention, the driving effect of the focusing structure is better, the focusing reaction of the lens is more sensitive, and the internal structure adopts a nested installation mode, so that the whole structure is more compact, and the application prospect is better.

Description

Technical Field

[0001] This invention relates to the field of imaging equipment technology, and in particular to a focusing structure and lens. Background Technology

[0002] A zoom lens is a camera lens that can change its focal length within a certain range, thereby obtaining different widths of field of view, different sizes of images, and different ranges of scenery. Zoom lenses can change the shooting range by adjusting the focal length without changing the shooting distance, which is very beneficial for image composition.

[0003] Modern camera lenses are increasingly miniaturized to meet the needs of users when out and about. However, this miniaturization limits the internal space available for the lens's internal structure. Therefore, it's difficult to simultaneously achieve both structural compactness and the requirement for high-power zoom. Summary of the Invention

[0004] The main objective of this invention is to propose a focusing structure and lens that aims to solve the problem that traditional camera lens structures are difficult to simultaneously meet the requirements of miniaturization and high-drive-force zoom.

[0005] To achieve the above objectives, the present invention proposes a focusing structure for use in a lens structure, the focusing structure comprising: The mounting frame has a mounting cavity extending in the vertical direction; Multiple magnet assemblies are provided, and the multiple magnet assemblies are installed alternately on the inner wall of the mounting cavity around the axis of the mounting cavity to form a fixed magnetic field in the mounting cavity; Both adjustment components have a coil part and a lens mounting part. The coil part is disposed on the lens mounting part, and the lens mounting part is movably mounted on its inner wall in the vertical direction. When the coil is energized, the fixed magnetic field and the magnetic field formed by the coil interact to drive the lens mounting component to move vertically along the inner wall of the mounting cavity.

[0006] In one embodiment, the magnet assembly includes: A magnetic yoke is disposed on the inner wall of the mounting cavity, the magnetic yoke having a mounting hole extending in a vertical direction, and the two ends of the mounting hole in a first direction being through-holes; and, A magnet is disposed in the mounting hole to form a closed magnetic field together with the magnetic yoke, and the magnetic poles of the magnet are arranged radially corresponding to the mounting cavity; The coil portion passes through the mounting hole, and the winding direction of the coil is perpendicular to the extension direction of the mounting hole; The first direction is horizontal and perpendicular to the radial direction of the mounting cavity 11.

[0007] In one embodiment, the mounting hole has a first inner wall and a second inner wall disposed opposite to each other in the radial direction of the mounting cavity, the magnet is disposed on one of the first inner wall and the second inner wall to form a receiving area between the end of the magnet and the first inner wall or the second inner wall, and the coil portion is movably disposed in the receiving area in the vertical direction.

[0008] In one embodiment, the magnetic yoke includes a main body and a sealing portion; The main body is mounted on the inner wall of the mounting cavity, and the main body has a groove with an opening at the upper end; The sealing portion is installed at the opening of the groove portion to form the mounting hole portion.

[0009] In one embodiment, a guide assembly is provided between the lens mounting member and the inner wall of the mounting cavity, the guide assembly comprising: A guide portion is installed on the inner wall of the mounting cavity and extends vertically. A mounting protrusion is provided on the lens mounting component, and a slider portion is provided on one end of the mounting protrusion in the radial direction of the mounting cavity. A slot portion is provided on one end of the slider portion corresponding to the guide portion, and the guide portion is at least partially provided in the slot portion.

[0010] In one embodiment, the guide components are configured in at least two sets, and are respectively located at relative positions in the radial direction of the mounting cavity.

[0011] In one embodiment, the mounting frame is provided with a magnetic strip holder, and the magnetic strip holder is provided with a magnetic grid extending in a vertical direction; The slider section is provided with a magnetic induction element corresponding to the magnetic grating.

[0012] In one embodiment, the mounting frame and the magnet assembly are provided with corresponding threaded holes, and the magnet assembly is mounted on the inner wall of the mounting cavity by bolts engaging with the threaded holes; and / or, The magnet assembly is specifically configured to consist of six parts.

[0013] In one embodiment, one of the two adjustment components is a magnification adjustment element and the other is a compensation adjustment element.

[0014] The present invention also proposes a lens, the lens including a focusing structure, the focusing structure being used in a lens structure, the focusing structure comprising: The mounting frame has a mounting cavity extending in the vertical direction; Multiple magnet assemblies are provided, and the multiple magnet assemblies are installed alternately on the inner wall of the mounting cavity around the axis of the mounting cavity to form a fixed magnetic field in the mounting cavity; Both adjustment components have a coil part and a lens mounting part. The coil part is disposed on the lens mounting part, and the lens mounting part is movably mounted on its inner wall in the vertical direction. When the coil is energized, the fixed magnetic field and the magnetic field formed by the coil interact to drive the lens mounting component to move vertically along the inner wall of the mounting cavity.

[0015] The technical solution of this invention involves evenly spaced multiple magnet components on the inner peripheral wall of a fixed frame to form a fixed magnetic field with high driving efficiency. When the coil is energized, it provides a sufficiently large driving force, which is not only well-suited for heavy loads but also effectively improves the response speed of the adjustment component, thereby enhancing the overall performance of the lens assembly. Structurally, the positional relationship between the two coils minimizes the magnet length and magnetic circuit, further increasing the driving force. Simultaneously, the internal mounting structure of the fixed frame employs a nested mounting method. This method, while ensuring sufficient driving force, significantly improves the overall compactness of the zoom structure, facilitating lens miniaturization and making the entire structure suitable for thinner and lighter electronic products. Attached Figure Description

[0016] 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. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 A schematic diagram of an embodiment of the focusing structure provided by the present invention; Figure 2 for Figure 1 A schematic diagram of the internal structure of the central focusing structure mounting frame; Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 for Figure 2 A schematic diagram showing the positional relationship between the two adjustment components; Figure 5 for Figure 4 A schematic diagram of the structure of the adjustment component.

[0018] Explanation of icon numbers: 100. Focusing structure; 1. Mounting frame; 11. Mounting cavity; 12. Threaded hole; 13. Mounting groove; 14. Fixing groove; 2. Magnet assembly; 21. Magnetic yoke; 211. Main body; 212. Sealing part; 213. Mounting hole; 22. Magnet; 3. Adjustment assembly; 31. Coil part; 32. Lens mounting part; 321. Assembly hole; 322. Clearance groove; 4. Guide assembly; 41. Guide part; 42. Mounting protrusion; 421. Slider part; 4211. Slot part; 4212. Magnetic induction element; 422. Receiving groove; 5. Magnetic strip holder; 51. Magnetic grid.

[0019] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] 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 a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0022] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0023] A zoom lens is a camera lens that can change its focal length within a certain range, thereby obtaining different widths of field of view, different sizes of images, and different ranges of scenery. Zoom lenses can change the shooting range by adjusting the focal length without changing the shooting distance, which is very beneficial for image composition.

[0024] Modern camera lenses are increasingly miniaturized to meet the needs of users when out and about. However, this miniaturization limits the internal space available for the lens's internal structure. Therefore, it's difficult to simultaneously achieve both structural compactness and the requirement for high-power zoom.

[0025] This invention proposes a focusing structure 100.

[0026] Please see Figure 1 and Figure 2 In one embodiment of the present invention, the focusing structure 100 is used in a lens structure. The focusing structure 100 includes a mounting frame 1, a magnet assembly 2, and two adjustment assemblies 3. The mounting frame 1 has a mounting cavity 11 extending vertically. Multiple magnet assemblies 2 are arranged alternately on the inner wall of the mounting cavity 11 around its axis to form a fixed magnetic field within the mounting cavity 11. Each of the two adjustment assemblies 3 has a coil portion 31 and a lens mounting member 32. The coil portion 31 is disposed on the lens mounting member 32, and the lens mounting member 32 is movably mounted on its inner wall in a vertical direction. When the coil portion 31 is energized, the fixed magnetic field and the magnetic field formed by the coil portion 31 interact to drive the lens mounting member 32 to move vertically on the inner wall of the mounting cavity 11.

[0027] The vertical direction can be referenced. Figure 1 and Figure 2 As indicated by the label. In the technical solution of the present invention, the mounting frame 1 is the main mounting structure for the two adjustment components 3. The two ends of the mounting frame 1 are through structures, which can complete the reception and processing of light in the axial direction. Specifically, multiple magnet components 2 are installed at intervals around the axis of the mounting cavity 11 on the inner wall of the mounting cavity 11 so as to form a fixed magnetic field inside the mounting cavity 11. In order to ensure the uniformity of the magnetic field at the corresponding position of the mounting frame 1 as much as possible, it is preferable to arrange multiple magnet components 2 at equal intervals, thereby improving the stability of the adjustment component 3 when moving in the vertical direction. It should also be noted that in this embodiment, multiple magnet components 2 are set, which can provide a sufficiently large driving force after the coil part 31 is energized. This not only makes it well applicable to heavy loads, but also effectively improves the response speed of the adjustment component 3 when moving, thereby improving the overall performance of the lens assembly.

[0028] The adjustment component 3 specifically includes the coil portion 31 and the lens mounting component 32. The lens mounting component 32 has a mounting hole 321 at its center for mounting the lens structure. To ensure effective light propagation, the mounting hole 321 and the axis of the mounting cavity 11 are preferably coaxial. The coil portion 31 is wound around the lens mounting component 32. It should be noted that the winding direction of the coil portion 31 is perpendicular to the axial direction of the mounting cavity 11. Multiple magnet assemblies form a radial fixed magnetic field inside the mounting cavity 11. When the coil portion 31 is energized, it experiences a pure linear thrust along its axial direction within the radial magnetic field, thereby driving the entire lens mounting component 32 to move along the axial direction of the mounting cavity 11. It should be noted that the magnitude of the magnetic force generated by the energized coil is also related to the current and the number of coil turns, and needs to be set according to actual requirements during design.

[0029] It should also be noted that this embodiment includes two adjustment components 3, both of which can move along the axis of the mounting cavity 11 after being powered on. In the actual structure, the two adjustment components 3 are respectively configured to correspond to the magnification adjustment and the compensation focus effect. That is, one of the two adjustment components 3 is a magnification adjustment component, and the other is a compensation adjustment component. With this configuration, the entire focusing structure 100 simultaneously has the effects of magnification change and compensation focus. Furthermore, due to the use of multiple magnet components 2, the focus adjustment effect is faster, and the actual user experience is greatly improved.

[0030] Additionally, it should be noted that although both adjustment components 3 include the coil portion 31 and the lens mounting member 32, there are certain differences between the two adjustment components 3 in the specific arrangement of the coil portion 31. Specifically, as follows... Figure 2 , Figure 3 and Figure 5 As shown, the two lens mounting members 32 are arranged back-to-back within the mounting cavity 11. The coil portion 31 corresponding to the magnification adjustment member is located above its own lens mounting member 32, while the coil portion 31 corresponding to the compensation adjustment member is located at the middle position of the two lens mounting members 32. This mounting arrangement shortens the distance between the two coil portions 31, which helps to increase the length of the magnet 22, thereby increasing the driving force.

[0031] In some implementations, such as Figure 2 and Figure 3As shown, the magnet assembly 2 includes a yoke 21 and a magnet 22. The yoke 21 is disposed on the inner wall of the mounting cavity 11, and has a mounting hole 213 extending vertically, with both ends of the mounting hole 213 penetrating in a first direction. The magnet 22 is disposed within the mounting hole 213 to form a closed magnetic field together with the yoke 21, and the magnetic poles of the magnet 22 are radially aligned with the mounting cavity 11. A coil portion 31 is disposed within the mounting hole 213, and the winding direction of the coil is perpendicular to the extending direction of the mounting hole 213. The first direction is horizontal and perpendicular to the radial direction of the mounting cavity 11.

[0032] The aforementioned horizontal direction can be confirmed by the vertical direction and the radial direction of the mounting cavity, as detailed in the following reference. Figure 2 As shown. Each of the multiple magnetic yokes 21 has mounting holes 213 along a first direction. The magnet 22 is mounted on the inner wall of each mounting hole 213, thus forming a closed magnetic field together with the magnetic yokes 21. The magnetic yokes 21 provide a low-resistivity path for magnetic flux and simultaneously "capture" scattered magnetic field lines, thereby forming a complete and efficient magnetic circuit environment with the magnet 22. This significantly improves the motion sensitivity of the lens mount 32. Furthermore, as mentioned above, the winding direction of the coil 31 is perpendicular to the axial direction of the mounting cavity 11, and the coil 31 passes through multiple mounting holes 213. Therefore, when the coil 31 is energized, the magnetic field generated by the coil 31 interacts with the fixed magnetic field formed by the multiple magnet assemblies 2, thereby causing the coil 31 to move vertically within the multiple mounting holes 213. In the above structure, the coil and the yoke 21 are installed in an embedded manner. This installation method not only ensures the driving effect, but also occupies less space inside the mounting cavity 11, which is more conducive to the compact setting of the entire focusing structure 100.

[0033] When the coil section 31 is energized, it can move vertically within the mounting hole 213, and the magnet 22 is also mounted within the mounting hole 213. To ensure the movement of the coil section 31 within the mounting hole 213, a movement space for the coil section 31 is defined within the mounting hole 213 and on the side corresponding to the magnet 22. Specifically, in some embodiments, such as... Figure 2 and Figure 3As shown, the mounting hole 213 has a first inner wall and a second inner wall that are arranged opposite to each other in the radial direction of the mounting cavity 11. The magnet 22 is disposed on one of the first inner wall and the second inner wall to form an accommodating area between the end of the magnet 22 and the first inner wall or the second inner wall. The coil portion 31 is movably disposed in the accommodating area in the vertical direction.

[0034] In the specific structure, the accommodating region is located at one end of the magnet 22 corresponding to the axis of the mounting cavity 11. The accommodating region has a length extending along the vertical direction to provide movement space for the coil part 31 in the vertical direction.

[0035] The magnet 22 is installed in the mounting hole 213. A fixing structure that can be added between the magnet 22 and the inner wall of the mounting hole 213 is used to increase the installation stability of the magnet 22 in the mounting hole 213, thereby improving the stability of the fixed magnetic field in the entire mounting cavity 11.

[0036] Furthermore, as can be seen from the above structure, the coil portion 31 is partially inserted into the mounting holes 213 on the plurality of magnetic yoke portions 21. In actual structure, in order to ensure the integrity of the coil portion 31, its specific structure is generally a pre-wound structure, and in actual installation, it should be installed as a whole on the plurality of magnet assemblies 2.

[0037] Considering the operability and convenience of the coil section 31 installation process, in some embodiments, such as Figure 2 As shown, the magnetic yoke 21 includes a main body 211 and a sealing part 212; the main body 211 is mounted on the inner wall of the mounting cavity 11, and the main body 211 has a groove with an opening at the upper end; the sealing part 212 is mounted at the opening of the groove to form the mounting hole 213.

[0038] The main body 211 is specifically configured as a U-shaped structure, and the two ends of the groove in the first direction are as follows: Figure 2 and Figure 3 The main body 211 is arranged in a through-hole configuration, and an opening is formed at the upward end of the main body 211. Specifically, to install the coil part 31, it is placed downwards into the groove from the opening of the groove, thus completing the installation of the coil part 31 on the multiple main bodies 211. After the coil part 31 is installed, the sealing part 212 can be installed at the opening of the groove, thereby allowing the magnetic yoke part 21 to form a complete magnetic circuit guiding structure.

[0039] It is conceivable that the main body 211 and the sealing part 212 are preferably made of the same material to ensure the consistency of the physical properties of the entire magnetic yoke 21.

[0040] To further improve the installation and fixing effect of the sealing part 212 at the opening of the groove, an adapter protrusion is provided upward at the opening of the groove, and the sealing part 212 forms an adapter groove corresponding to the adapter protrusion. Specifically, when installing the sealing part 212, the adapter groove is engaged with the adapter protrusion, and then the sealing part 212 is placed over the end opening of the groove. Through the cooperation of the protrusion and groove structures, the sealing part 212 can be positioned and fixed on the main body 211, preventing offset during installation and ensuring the overall performance of the entire magnetic yoke 21 structure.

[0041] As described above, both adjustment components 3 are movably mounted within the mounting cavity 11 along its axial direction. To ensure stable movement of the two guide components 4 within the mounting cavity 11 and to minimize vibration and deflection, in some embodiments, such as... Figure 2 and Figure 3 As shown, a guide assembly 4 is provided between the lens mounting member 32 and the inner wall of the mounting cavity 11. The guide assembly 4 includes a guide portion 41 and a mounting protrusion 42. The guide portion 41 is mounted on the inner wall of the mounting cavity 11 and extends vertically. The mounting protrusion 42 is provided on the lens mounting member 32, and a slider portion 421 is provided on one end of the mounting protrusion 42 corresponding to the radial direction of the mounting cavity 11. The slider portion 421 is provided with a slot portion 4211 corresponding to one end of the guide portion 41. The guide portion 41 is at least partially disposed within the slot portion 4211.

[0042] like Figure 2 and Figure 3 As shown, the guide portion 41 is configured as a strip-shaped structure, which is installed on the inner wall of the mounting cavity 11, and its length extends vertically. To ensure the installation effect of the guide portion 41, a mounting groove 13 is formed on the inner wall of the mounting frame 1 in the vertical direction. The guide portion 41 is at least partially recessed and installed in the mounting groove 13, thereby ensuring the installation stability of the guide portion 41 on the inner wall of the mounting cavity 11. The guide portion 41 at least partially protrudes from the inner wall surface of the mounting cavity 11 to form a protruding structure that can guide and engage the slider. Specifically, during installation, the slider portion 421 is held vertically on the guide portion 41 to install the mounting protrusion 42 vertically onto the inner wall of the mounting cavity 11.

[0043] Furthermore, in the specific structure, the mounting protrusion 42 protrudes outward at least partially at one end corresponding to the axial direction of the mounting cavity 11, forming a receiving groove 422 between the mounting protrusion 42 and the lens mounting member 32. The coil portion 31 is at least partially disposed within the receiving groove 422. It is conceivable that the lens mounting member 32 and the mounting protrusion 42 can be integrally formed, and the receiving groove 422 allows the coil portion 31 and the lens mounting member 32 to form a good overall relationship. After the coil portion 31 is energized, it can generate a vertical magnetic field, and the interaction between the coil portion and the fixed magnetic field will drive the entire lens mounting member to move vertically.

[0044] The cooperation between the slider portion 421 and the guide portion 41 improves the stability of the lens mount 32 during vertical movement. To further enhance the movement of the lens mount 32 on the inner wall of the mounting cavity 11, in some embodiments, at least two sets of guide components 4 are provided, each positioned at a relative location in the radial direction of the mounting cavity 11.

[0045] By setting multiple sets of guide structures, the coaxiality of the lens mounting component 32 and the mounting cavity 11 can be guaranteed. While ensuring the movement stability of the lens mounting component 32, it also helps to improve the focusing effect of the entire focusing structure.

[0046] As described above, one of the two adjustment components 3 is for strain adjustment, and the other is for focus compensation. The above functions are achieved based on the lens mount 32 being vertically movable within the mounting cavity 11. To ensure the accuracy of the adjustment effect, the mounting frame 1 is provided with a corresponding structure for acquiring the real-time position of the two lens mounts 32 along the axial direction of the mounting cavity 11.

[0047] Specifically, in some embodiments, such as Figure 3 As shown, the mounting frame 1 is provided with a magnetic strip seat 5, and the magnetic strip seat 5 is provided with a magnetic grid 51 extending in the vertical direction; the slider part 421 is provided with a magnetic induction element 4212 corresponding to the magnetic grid 51.

[0048] The magnetic grating 51 is mounted vertically on the magnetic strip base 5. When the lens mounting component 32 moves vertically, the magnetic induction element 4212 moves in the direction of extension of the magnetic grating 51. One end of the magnetic induction element 4212 is positioned directly opposite the magnetic grating 51. When it moves vertically, it can read the changes in the magnetic field on the magnetic grating 51 and convert them into electrical signals. Through its periodic change parameters, the specific position of the lens mounting component 32 on the axis of the mounting cavity 11 can be obtained.

[0049] The mounting frame 1 has a fixing groove 14 extending vertically and penetrating both ends of the mounting cavity 11 radially. The magnetic strip holder 5 has a T-shaped structure, including a insertion part and a limiting part. The end of the insertion part away from the limiting part passes through the fixing groove 14 and is located within the mounting cavity 11. The magnetic grid 51 is mounted on the end face of the insertion part away from the limiting part. The limiting part is located outside the mounting cavity 11 and is mounted on the outer wall of the mounting frame 1. It is conceivable that the magnetic strip holder 5 can be fixedly connected to the mounting frame 1 by interference fit, adhesive bonding, or snap-fit. In actual design, the appropriate method can be selected based on the actual production conditions.

[0050] Specifically, six magnet assemblies 2 are configured, and the six magnet assemblies 2 are evenly spaced around the axis of the mounting cavity 11 and mounted on the inner wall of the mounting cavity 11. The magnet assemblies 2 are all fixed to the mounting frame 1 using a detachable mounting method.

[0051] Specifically, in some embodiments, such as Figure 2 As shown, the mounting frame 1 and the magnet assembly 2 are provided with corresponding threaded holes 12. The magnet assembly 2 is installed on the inner wall of the mounting cavity 11 by bolts and the threaded holes 12.

[0052] In the actual structure, each magnet assembly 2 is installed using two bolts. Specifically, the mounting frame 1 has two threaded holes 12 corresponding to each magnet assembly 2, arranged alternately in a vertical direction. The magnet assembly 2 also has two corresponding threaded holes 12. During installation, the magnet assembly 2 is aligned with its corresponding counterpart on the mounting frame 1, and then installed using the two bolts. This detachable installation method ensures the replaceability of the magnet assembly 2 and effectively improves the installation stability of the magnet assembly 2 on the mounting frame 1.

[0053] The present invention also proposes a lens, which includes a focusing structure 100. The specific structure of the focusing structure 100 is as described in the above embodiments. Since this lens adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0054] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A focusing structure for use in a lens structure, characterized in that, The focusing structure includes: The mounting frame has a mounting cavity extending in the vertical direction; Multiple magnet assemblies are provided, and the multiple magnet assemblies are installed alternately on the inner wall of the mounting cavity around the axis of the mounting cavity to form a fixed magnetic field in the mounting cavity; Both adjustment components have a coil part and a lens mounting part. The coil part is disposed on the lens mounting part, and the lens mounting part is movably mounted on its inner wall in the vertical direction. When the coil is energized, the fixed magnetic field and the magnetic field formed by the coil interact to drive the lens mounting component to move vertically along the inner wall of the mounting cavity.

2. The focusing structure as described in claim 1, characterized in that, The magnet assembly includes: A magnetic yoke is disposed on the inner wall of the mounting cavity, the magnetic yoke having a mounting hole extending in a vertical direction, and the two ends of the mounting hole in a first direction being through-holes; and, A magnet is disposed in the mounting hole to form a closed magnetic field together with the magnetic yoke, and the magnetic poles of the magnet are arranged radially corresponding to the mounting cavity; The coil portion passes through the mounting hole, and the winding direction of the coil is perpendicular to the extension direction of the mounting hole; The first direction is perpendicular to the radial direction of the mounting cavity.

3. The focusing structure as described in claim 2, characterized in that, The mounting hole has a first inner wall and a second inner wall that are arranged opposite to each other in the radial direction of the mounting cavity. The magnet is disposed on one of the first inner wall and the second inner wall to form a receiving area between the end of the magnet and the first inner wall or the second inner wall. The coil portion is movably disposed in the receiving area in the vertical direction.

4. The focusing structure as described in claim 2, characterized in that, The magnetic yoke includes a main body and a sealing part; The main body is mounted on the inner wall of the mounting cavity, and the main body has a groove with an opening at the upper end; The sealing portion is installed at the opening of the groove portion to form the mounting hole portion.

5. The focusing structure as described in claim 1, characterized in that, A guide assembly is provided between the lens mounting component and the inner wall of the mounting cavity, the guide assembly comprising: A guide portion is installed on the inner wall of the mounting cavity and extends vertically. A mounting protrusion is provided on the lens mounting component, and a slider portion is provided on one end of the mounting protrusion in the radial direction of the mounting cavity. A slot portion is provided on one end of the slider portion corresponding to the guide portion, and the guide portion is at least partially provided in the slot portion.

6. The focusing structure as described in claim 5, characterized in that, The guide components are configured in at least two sets, and are respectively located at relative positions in the radial direction of the mounting cavity.

7. The focusing structure as described in claim 5, characterized in that, The mounting frame is provided with a magnetic strip holder, and the magnetic strip holder is provided with a magnetic grid extending in the vertical direction; The slider section is provided with a magnetic induction element corresponding to the magnetic grating.

8. The focusing structure as described in claim 1, characterized in that, The mounting frame and the magnet assembly are provided with corresponding threaded holes. The magnet assembly is mounted on the inner wall of the mounting cavity by bolts engaging with the threaded holes; and / or The magnet assembly is specifically configured to consist of six parts.

9. The focusing structure as described in claim 1, characterized in that, One of the two adjustment components is a magnification adjustment element, and the other is a compensation adjustment element.

10. A lens, characterized in that, This includes the focusing structure described in any one of claims 1-9.

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