CN118330964A

CN118330964A - Anti-shake structure and image pickup apparatus

Info

Publication number: CN118330964A
Application number: CN202410413570.7A
Authority: CN
Inventors: 刘辉; 邱盛平; 王浩; 李昆; 吴恙
Original assignee: Union Optech Co Ltd
Current assignee: Union Optech Co Ltd
Priority date: 2024-04-08
Filing date: 2024-04-08
Publication date: 2024-07-12

Abstract

The invention discloses an anti-shake structure and image pickup equipment, which relate to the technical field of lens anti-shake, wherein the anti-shake structure comprises a bottom plate, a cover plate, a movable group, a driving mechanism and at least one tension spring, the driving mechanism comprises at least one magnetic driving component for driving the movable group to move transversely, and two other magnetic driving components which are arranged at intervals in the transverse direction and are used for driving the movable group to move longitudinally, so that shake can be corrected transversely and longitudinally by an optical compensation method, the anti-shake structure can also rotate to correct shake in the circumferential rotation direction, and the movable group can only move longitudinally and/or transversely or rotate by connecting an installation seat with the bottom plate or the cover plate through the at least one tension spring, so that the movable group is prevented from swinging in the axial direction of the lens, and the anti-shake structure can be applied to the optical anti-shake technology, can also be applied to the anti-shake technology of a sensor, can cover various application scenes, and can accurately compensate displacement deviation.

Description

Anti-shake structure and image pickup apparatus

Technical Field

The invention relates to the technical field of lens anti-shake, in particular to an anti-shake structure and image pickup equipment.

Background

In the fields of digital cameras, in-vehicle lenses, monitoring lenses, and the like, vibration is often generated in optical devices. The shake of the lens can cause the shake of the picture, and a clear image cannot be captured. For cameras, anti-shake at photographing is classified into optical anti-shake and electronic anti-shake, which is a technique of counteracting image blur caused by camera shake by adjusting the position of a lens or a sensor. Optical anti-shake systems typically use mechanical devices or moving elements around the camera lens or sensor that adjust the position of the lens or sensor in real time as the camera shakes to maintain image stability. Sensor anti-shake is a technique that uses information inside an image sensor to detect camera shake or motion and counteracts image shake by adjusting pixel positions on the sensor. Sensor anti-shake does not involve physical movement of the lens or sensor, but relies on image processing algorithms to process image data to achieve image stabilization. The specific principle is that the gyroscope in the lens detects the micro movement of the camera, then the information is transmitted to the processor, the processor calculates the amount to be compensated, the optical compensation method is adopted to correct the shake, the lens moves reversely to compensate the amount of the shake, the light path is changed, and the imaged picture is consistent with the picture before the shake.

Disclosure of Invention

The invention mainly aims to provide an anti-shake structure and image pickup equipment, and aims to provide an anti-shake structure which can cover various application scenes and can accurately compensate displacement deviation.

In order to achieve the above object, the present invention provides an anti-shake structure, which includes:

A bottom plate;

The cover plate is arranged on one side of the bottom plate;

The movable group is movably arranged between the bottom plate and the cover plate and comprises a mounting seat and a photosensitive chip mounted on the mounting seat; and

The driving mechanism comprises at least three magnetic driving assemblies, wherein one magnetic driving assembly is used for driving the movable group to move transversely, the other two magnetic driving assemblies are arranged at intervals transversely and are used for driving the movable group to move longitudinally, each magnetic driving assembly comprises two magnets which are respectively arranged on the bottom plate and the cover plate and are oppositely arranged, and driving coils which are arranged on the mounting seat and are positioned between the two magnets, and the three driving coils are arranged in parallel so as to be independently controlled; and

And one end of the tension spring is connected with the mounting seat, and the other end of the tension spring is connected with the bottom plate or the cover plate.

In one embodiment, the tension spring is arranged between the mounting seat and the bottom plate;

The anti-shake structure further comprises a plurality of rolling parts, and each rolling part is arranged between the mounting seat and the bottom plate in a cushioning mode.

In one embodiment, the mounting seat is provided with a mounting arm, the mounting arm extends towards one side far away from the bottom plate, and the mounting arm is provided with a first connecting part for connecting a shackle at one end of the tension spring;

the cover plate is provided with a yielding groove for the mounting arm to pass through;

The bottom plate is provided with a second connecting part for the shackle connection of the other end of the tension spring.

In an embodiment, the tension springs are provided in a plurality, and the tension springs are arranged at intervals along the circumference of the mounting seat.

In one embodiment, each driving coil comprises two side edges which are oppositely arranged;

Each magnet comprises two magnetic strips which are respectively and correspondingly arranged with two side edges of the driving coil so as to form a magnetic circuit gap between the two magnetic strips which are respectively arranged on the bottom plate and the cover plate and are oppositely arranged, and the two side edges of the driving coil are respectively arranged in the corresponding magnetic circuit gap.

In an embodiment, the anti-shake structure further includes a plurality of rolling parts, and each rolling part is arranged between the mounting seat and the bottom plate in a cushioning manner.

In one embodiment, the mounting seat is provided with a plurality of mounting holes in a penetrating manner, and each mounting hole is used for mounting the corresponding driving coil;

The anti-shake structure further comprises an electric control device, the electric control device comprises a position detection element and a photosensitive element soft row, the photosensitive element soft row is connected with the driving coil and the position detection element, and the position detection element is located in the area inside the inner ring of the driving coil so as to form the position detection device with the corresponding magnet.

In an embodiment, the anti-shake structure further includes a plurality of limit posts arranged at intervals along the circumferential direction of the bottom plate, and two ends of each limit post are respectively fixed with the bottom plate and the cover plate;

the installation seat is arranged on the inner sides of the plurality of limit posts, a plurality of notches are formed in the periphery of the installation seat, and the plurality of notches and the plurality of limit posts are respectively and correspondingly arranged, so that when the installation seat moves transversely or longitudinally, the plurality of limit posts can limit the movement of the installation seat.

In an embodiment, the anti-shake structure further includes a buffer sleeve sleeved on the limiting post.

In an embodiment, the material of the bottom plate and/or the cover plate is a magnetic material.

The present invention also provides an image pickup apparatus including the above-described anti-shake structure, the anti-shake structure including:

A bottom plate;

The cover plate is arranged on one side of the bottom plate;

the movable group is movably arranged between the bottom plate and the cover plate and comprises a mounting seat and a photosensitive chip mounted on the mounting seat;

According to the technical scheme, the movable group is arranged between the bottom plate and the cover plate, the movable group is movably arranged, the mounting seat drives the photosensitive chip to move when the movable group moves, in order to realize the movement of the movable group, three magnetic driving assemblies are arranged, one magnetic driving assembly is used for driving the movable group to move transversely, the other two magnetic driving assemblies are arranged at intervals transversely and are used for driving the movable group to move longitudinally, each magnetic driving assembly comprises two magnets which are arranged on the bottom plate and the cover plate in an opposite manner, and driving coils which are arranged on the mounting seat and are positioned between the two magnets, and the three driving coils are arranged in parallel so as to be independently controlled when the driving coils for driving the movable group to move transversely are electrified, realizing the compensation of the moving group in the transverse direction, when at least one driving coil for driving the moving group to move along the longitudinal direction is electrified, realizing the compensation of the moving group in the longitudinal direction, because two magnetic driving assemblies distributed at intervals in the transverse direction can drive the moving group to move along the longitudinal direction, the directions of driving forces generated by the two magnetic driving assemblies can be controlled to be the same or opposite by controlling the current directions of the two driving coils, when the directions of the driving forces generated by the two magnetic driving assemblies are the same, the moving group can be realized to move along the longitudinal direction, when the directions of the driving forces generated by the two magnetic driving assemblies are opposite, the moving group can be realized to rotate, the application can not only correct the shake in the transverse direction and the longitudinal direction by an optical compensation method, can also rotate in order to correct the shake in circumference direction of rotation, through will the mount pad pass through at least one the extension spring with the bottom plate or the apron is connected, makes the removal crowd can only rotate along vertical, horizontal or the plane that it is located, avoids the removal crowd then has the possibility of rocking in the axial of camera lens, anti-shake structure not only can be applied in optics anti-shake technique to can also be applied to sensor anti-shake technique, in order to provide one kind and cover multiple application scenario, and can accurate compensation displacement deviation's anti-shake structure.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of an anti-shake structure according to an embodiment of the present invention;

FIG. 2 is a perspective view of the anti-shake structure of FIG. 1 from another perspective;

FIG. 3 is a schematic perspective view of the base plate and magnets of FIG. 1;

FIG. 4 is a perspective view of the moving group and the driving coil of FIG. 1;

FIG. 5 is a schematic perspective view of the other view of FIG. 4;

FIG. 6 is a schematic perspective view of a flexible photosensitive element row of FIG. 1;

FIG. 7 is a schematic perspective view of the cover plate and magnet of FIG. 1;

Fig. 8 is a perspective view of the other view of fig. 7.

Reference numerals illustrate:

100. An anti-shake structure; 1. a bottom plate; 11. a second connecting portion; 2. a cover plate; 2a, a yielding groove; 3. moving the group; 31. a mounting base; 311. a mounting arm; 3111. a first connection portion; 31a, a containing groove; 31b, mounting holes; 31c, notch; 32. a photosensitive chip; 4. a magnetic drive assembly; 41. a magnet; 411. a magnetic stripe; 42. a driving coil; 421. a side edge; 5. a rolling part; 6. an electric control device; 61. a position detecting element; 62. soft row of photosensitive elements; 71. a limit column; 72. a buffer sleeve; 10. and a tension spring.

The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.

In the fields of digital cameras, in-vehicle lenses, monitoring lenses, and the like, vibration is often generated in optical devices. The shake of the lens can cause the shake of the picture, and a clear image cannot be captured. For the camera, the anti-shake during photographing is divided into optical anti-shake and electronic anti-shake, in principle, the micro-movement of the camera is detected through a gyroscope in a lens, then information is transmitted to a processor, the processor calculates the amount to be compensated, the amount of shake is corrected by adopting an optical compensation method, the amount of picture shake is more or less, and the lens moves reversely to compensate the amount of picture shake, so that the optical path is changed, and the imaged picture is consistent with the picture before shake. The anti-shake lens in the prior art has complex structure, lag reaction and large power consumption, and simultaneously causes the whole volume and the weight of the lens to be large, thus being not applicable to a complex and precise lens optical system.

In order to solve the above-mentioned problems, the present invention provides an anti-shake structure, and fig. 1 is a schematic perspective view of an embodiment of the anti-shake structure provided by the present invention; FIG. 2 is a perspective view of the anti-shake structure of FIG. 1 from another perspective; FIG. 3 is a schematic perspective view of the base plate and magnets of FIG. 1; FIG. 4 is a perspective view of the moving group and the driving coil of FIG. 1; FIG. 5 is a schematic perspective view of the other view of FIG. 4; FIG. 6 is a schematic perspective view of a flexible photosensitive element row of FIG. 1; FIG. 7 is a schematic perspective view of the cover plate and magnet of FIG. 1; fig. 8 is a perspective view of the other view of fig. 7.

Referring to fig. 3, 4 and 8, the anti-shake structure 100 includes a base plate 1, a cover plate 2, a moving group 3, a driving mechanism and at least one tension spring 10, wherein the cover plate 2 is disposed at one side of the base plate 1; the moving group 3 is movably arranged between the bottom plate 1 and the cover plate 2 and is arranged at intervals from the bottom plate 1 and the cover plate 2, and the moving group 3 comprises a mounting seat 31 and a photosensitive chip 32 mounted on the mounting seat 31; the driving mechanism comprises at least three magnetic driving components 4, wherein one magnetic driving component 4 is used for driving the movable group 3 to move transversely, the other two magnetic driving components 4 are arranged at intervals transversely and are used for driving the movable group 3 to move longitudinally, each magnetic driving component 4 comprises two magnets 41 which are respectively arranged on the base plate 1 and the cover plate 2 and are oppositely arranged, and driving coils 42 which are arranged on the mounting seat 31 and are positioned between the two magnets 41, the three driving coils 42 are arranged in parallel and can be controlled independently, one end of the tension spring 10 is connected with the mounting seat 31, and the other end of the tension spring 10 is connected with the base plate 1 or the cover plate 2.

It should be noted that, the driving mode of the magnetic driving assembly 4 is as follows: the driving coil 42 is disposed between two magnets 41 disposed opposite to each other, and the polarities of the two magnets 41 on the sides close to each other are opposite to each other, so that a magnetic field perpendicular to the driving coil 42 is generated, and according to the left hand rule, the left hand is placed in the magnetic field, so that the directions of the four fingers are consistent with the current direction in the wire, and the direction pointed by the thumb is the stress direction. Therefore, when the driving coil 42 is energized with current in different directions, the driving coil 42 can move in the lateral direction or the forward and reverse directions in the longitudinal direction, so as to drive the mounting seat 31 to drive the photosensitive chip 32 to adjust and move, thereby realizing compensation.

It will be appreciated that in the magnetic drive assembly 4 for driving the moving group 3 in a lateral direction, the drive coil 42 thereof has a straight wire extending in a longitudinal direction, and when the drive coil 42 is energized, an ampere force in a lateral direction can be generated according to the left hand rule; in the magnetic drive assembly 4 for driving the moving group 3 to move in the longitudinal direction, the drive coil 42 has a straight wire extending in the transverse direction, and when the drive coil 42 is energized, an ampere force in the longitudinal direction can be generated according to the left-hand rule.

Because two magnetic force driving components 4 which are distributed at intervals in the transverse direction can drive the moving group 3 to move longitudinally, the directions of the driving forces generated by the two magnetic force driving components 4 can be controlled to be the same or opposite by controlling the current directions of the two driving coils 42, when the directions of the driving forces generated by the two magnetic force driving components 4 are the same, the moving group 3 can move longitudinally, and when the directions of the driving forces generated by the two magnetic force driving components 4 are opposite, the moving group 3 can rotate.

It should be noted that the photosensitive chip 32 may be configured as a CMOS or a CCD. The "transverse" and "longitudinal" referred to in the present document are merely expressed as two directions disposed to intersect at about 90 °, and when the anti-shake structure 100 shown in the drawings is rotated by 90 °, the magnetic driving assembly 4 in the previous "transverse" may be described as the magnetic driving assembly 4 in the "longitudinal" direction, and thus, the layout form of the magnetic driving assembly 4 is not limited to the one described above.

In another embodiment, in order to realize the rotation of the moving group 3, two magnetic driving assemblies 4 that are all used for driving the moving group 3 to move along the transverse direction may be arranged at intervals in the longitudinal direction, and when two magnetic driving assemblies 4 generate a force in the opposite direction along the transverse direction after being electrified, the moving group 3 may be driven to rotate as well.

In yet another embodiment, the number of the magnetic driving assemblies 4 may be four, or even more, the four magnetic driving assemblies 4 may be two arranged at intervals in the lateral direction, two arranged at intervals in the longitudinal direction, and the two magnetic driving assemblies 4 arranged at intervals in the longitudinal direction or the lateral direction may be arranged side by side on the same straight line or may be staggered.

The two magnetic driving assemblies 4 for driving the moving group 3 to move along the transverse direction may be disposed on the same side, or may be separately disposed on two sides of the base plate 1 disposed opposite to each other in the transverse direction or the longitudinal direction, and of course, the number of the magnetic driving assemblies 4 is not limited to the above examples, and the arrangement of the magnetic driving assemblies 4 is not limited to the above examples, and other modifications are possible by those skilled in the art in light of the technical spirit of the present embodiment, so long as the functions and effects achieved by the present embodiment are the same as or similar to those achieved by the present embodiment, and all the modifications are covered in the protection scope of the present embodiment.

It should be noted that, since the moving group 3 is disposed between the cover plate 2 and the base plate 1, and driven by magnetic force, when there is a large gap between the mounting base 31 and the cover plate 2 or the base plate 1, the moving group 2 has a possibility of swinging in the axial direction of the lens, so as to affect the compensating distance and angle in the transverse direction and/or the longitudinal direction, and the mounting base 31 is connected to the base plate 1 or the cover plate 2 through at least one tension spring 10, so that the mounting base 31 can be rotated along the longitudinal direction, the transverse direction or the plane in which it is located by abutting against one side of the base plate 1 or abutting against one side of the cover plate 2.

It should be noted that, in the prior art, optical anti-shake is generally involved, and adverse effects caused by camera shake are offset by adjusting positions of lenses in a longitudinal direction and a transverse direction, so that the anti-shake structure involved in the prior art only involves adjustment in two dimensions.

In the technical scheme provided by the application, a moving group 3 is arranged between a bottom plate 1 and a cover plate 2, the moving group 3 is movably arranged, when the moving group 3 moves, the mounting seat 31 drives the photosensitive chip 32 to move, in order to realize the movement of the moving group 3, three magnetic driving components 4 are arranged, one magnetic driving component 4 is used for driving the moving group 3 to move transversely, the other two magnetic driving components 4 are arranged at intervals transversely and are used for driving the moving group 3 to move longitudinally, each magnetic driving component 4 comprises two magnets 41 which are arranged on the bottom plate 1 and the cover plate 2 in an opposite way, and driving coils 42 which are arranged on the mounting seat 31 and are arranged between the two magnets 41, and the three driving coils 42 are arranged in parallel so as to be independently controlled, when the driving coil 42 for driving the moving group 3 to move along the transverse direction is electrified, the compensation of the moving group 3 in the transverse direction is realized, when at least one driving coil 42 for driving the moving group 3 to move along the longitudinal direction is electrified, the compensation of the moving group 3 in the longitudinal direction is realized, because two magnetic driving assemblies 4 distributed at intervals in the transverse direction can drive the moving group 3 to move along the longitudinal direction, by controlling the current directions of the two driving coils 42, the directions of the driving forces generated by the two magnetic driving assemblies 4 can be controlled to be the same or opposite, when the directions of the driving forces generated by the two magnetic driving assemblies 4 are the same, the movement of the moving group 3 along the longitudinal direction can be realized, when the directions of the driving forces generated by the two magnetic driving assemblies 4 are opposite, the rotation of the moving group 3 can be realized, the application can correct shake in the transverse direction and the longitudinal direction by an optical compensation method, can also rotate to correct shake in the circumferential rotation direction, and can prevent the movable group 3 from having the possibility of swaying in the axial direction of a lens by connecting the mounting seat 31 with the bottom plate 1 or the cover plate 2 through at least one tension spring 10, wherein the movable group 3 can only rotate along the longitudinal direction, the transverse direction or the plane where the movable group 3 is positioned, and the anti-shake structure 100 can be applied to the optical anti-shake technology and can also be applied to the sensor anti-shake technology so as to provide the anti-shake structure 100 which can cover various application scenes and can accurately compensate displacement deviation.

Further, since the driving coil 42 is disposed between the two magnets 41, in order to avoid friction caused by direct contact between the driving coil 42 and the two magnets 41, a certain gap exists between the two magnets 41 of the driving coil 42, so that the driving coil 42 is disposed between the two magnets 41 in a floating manner, and there is a possibility of instability during movement, and in order to ensure stability of the movement of the moving group 3 on a plane while reducing friction as much as possible, in this embodiment, the tension spring 10 is disposed between the mounting seat 31 and the bottom plate 1; the anti-shake structure 100 further includes a plurality of rolling parts 5, and each rolling part 5 is arranged between the mounting seat 31 and the bottom plate 1 in a cushioning manner. Preferably, three rolling parts 5 are provided, and three rolling parts 5 form a plane, so that the mounting seat 31 can be stably supported on the bottom plate 1. The rolling portion 5 may be a ball, a roller, or the like. Preferably, a ball is provided.

In this embodiment, referring to fig. 5, a receiving groove 31a with an opening facing the bottom plate 1 is provided on a side of the mounting seat 31 facing the bottom plate 1, the rolling portion 5 may be accommodated in the receiving groove 31a, and at least a portion of the rolling portion 5 may protrude out of a notch of the receiving groove 31a, so that the rolling portion 5 may abut against the bottom plate 1.

In other embodiments, each rolling portion 5 may also be arranged between the mounting seat 31 and the cover plate 2. The above-mentioned effect of reducing friction as much as possible while ensuring the stability of the movement of the moving group 3 on the plane can be achieved.

Further, in order to facilitate the installation of the tension spring 10, in the present embodiment, the installation base 31 is provided with an installation arm 311, the installation arm 311 extends toward a side far from the bottom plate 1, and the installation arm 311 is provided with a first connection portion 3111 for hook-and-loop connection of one end of the tension spring 10; a relief groove 2a is formed in the cover plate 2, and the relief groove 2a is used for the mounting arm 311 to penetrate through; the bottom plate 1 is provided with a second connecting part 11 for hook and loop connection of the other end of the tension spring 10. In order to realize the light and thin anti-shake structure 100, which is beneficial to miniaturization and small volume of the lens, the distance between the base plate 1 and the mounting seat 31 is set smaller, in the application, the mounting arm 311 is arranged on the mounting seat 31, and the mounting arm 311 extends towards the side far away from the base plate 1, so that the first connecting portion 3111 for mounting the tension spring 10 is arranged far away from the base plate 1, the tension spring 10 can have a larger space for elastic deformation, and simultaneously, the hook rings at the two ends of the tension spring 10 can be more conveniently mounted and fixed.

Further, in this embodiment, the tension springs 10 are provided in plural, and plural tension springs 10 are disposed at intervals along the circumferential direction of the mounting base 31, so that plural tension springs 10 are provided, so that the mounting base 31 can be stressed more uniformly and stably.

In this embodiment, referring to fig. 3 and 4, each of the driving coils 42 includes two opposite side edges 421; each of the magnets 41 includes two magnetic strips 411 respectively corresponding to two side edges 421 of the driving coil 42, so as to form a magnetic path gap between the two magnetic strips 411 respectively disposed on the bottom plate 1 and the cover plate 2 and disposed opposite to each other, and the two side edges 421 of the driving coil 42 are respectively disposed in the corresponding magnetic path gaps. In this way, by providing four magnetic strips 411, two magnetic circuit gaps are formed, so that two side edges 421 of each driving coil 42 are simultaneously located in the magnetic fields of the two magnetic circuit gaps, thereby enhancing the driving force of the magnetic force driving each driving coil 42, and enabling the moving group 3 to quickly respond to realize compensation.

Specifically, in order to monitor the shake amount of the lens in real time, and to facilitate quick and accurate acquisition of the compensation amount, referring to fig. 4 to 6, in this embodiment, the mounting base 31 is penetrated with a plurality of mounting holes 31b, and each mounting hole 31b is provided for mounting a corresponding driving coil 42; the anti-shake structure 100 further includes an electric control device 6, where the electric control device 6 includes a position detecting element 61 and a soft photosensitive element row 62, the soft photosensitive element row 62 is connected to the driving coil 42 and the position detecting element 61, and the position detecting element 61 is located in an area inside an inner ring of the driving coil 42 to form a position detecting device with the corresponding magnet 41.

The position detecting element 61 is located in the magnetic field generated by the corresponding magnet 41, when the lens shakes, the moving group 3 moves relatively to the bottom plate 1 and the cover plate 2, the strength of the magnetic field around the position detecting element 61 in the magnetic field changes, corresponding voltage signals are generated by the magnetic field changes, and the relative displacement between objects can be calculated by signal processing and analysis of the output voltage signals. By this arrangement, the magnetic field generated by the magnet 41 can be directly used as the induction magnetic field of the position detecting element 61, and the structure is compact and the cost is low.

The position detecting element 61 may be a hall element, a TMR (tunneling magneto resistor), or the like, but other possible detecting elements may be used, and the position detecting element may be specifically determined according to the actual situation, which is not limited in the embodiment of the present specification.

In this embodiment, referring to fig. 3 and 4, the anti-shake structure 100 further includes a plurality of limiting posts 71 disposed at intervals along the circumferential direction of the base plate 1, and two ends of each of the limiting posts 71 are respectively fixed to the base plate 1 and the cover plate 2; the mounting seat 31 is disposed at the inner sides of the plurality of limiting columns 71, a plurality of notches 31c are disposed at the periphery of the mounting seat 31, and the plurality of notches 31c and the plurality of limiting columns 71 are disposed corresponding to each other, so that when the mounting seat 31 moves in the transverse direction or the longitudinal direction, the plurality of limiting columns 71 can limit the movement of the mounting seat 31. In this way, when the movement group 3 shakes severely, the plurality of limit posts 71 limit the travel of the movement group 3.

Further, in order to avoid the collision between the mounting seat 31 of the moving group 3 and the limiting post 71, a large impact force is generated, and in this embodiment, the anti-shake structure 100 further includes a buffer sleeve 72 sleeved on the limiting post 71. The cushion cover 72 may be a rubber cover, but may also be a foam cover, etc., and may be specifically determined according to practical situations, which is not limited in the embodiment of the present disclosure.

In this embodiment, the material of the bottom plate 1 and/or the cover plate 2 is magnetic; and/or each of the magnets 41 is bonded to the corresponding base plate 1 or cover plate 2. So arranged, the magnet 41 may be fixedly mounted on the base plate 1 or fixed on the cover plate 2 directly by magnetic attraction. The installation form and the procedure are simpler; meanwhile, the material of the bottom plate 1 and/or the cover plate 2 is magnetic, so that the magnetic field strength can be increased, and the driving coil 42 can generate driving force better in an induction way.

Of course, in order to make the magnets 41 be more stably fixed on the base plate 1 and/or the cover plate 2, each of the magnets 41 may be adhered to the corresponding base plate 1 or the cover plate 2 by dispensing.

The present invention also provides an image capturing apparatus, which may be a camera, a vehicle-mounted lens, etc., and includes the above-mentioned anti-shake structure 100, and further includes a lens barrel, a lens, etc., because the image capturing apparatus includes the above-mentioned anti-shake structure 100, the specific structure of the anti-shake structure 100 refers to the above-mentioned embodiments, and because the anti-shake structure 100 of the present image capturing apparatus adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, and will not be described in detail herein.

The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.

Claims

1. An anti-shake structure for a lens, the anti-shake structure comprising:

A bottom plate;

The cover plate is arranged on one side of the bottom plate;

2. The anti-shake structure of claim 1, wherein the tension spring is disposed between the mount and the base plate;

3. The anti-shake structure according to claim 2, wherein the mount is provided with a mount arm extending toward a side away from the base plate, the mount arm being provided with a first connecting portion for hook-and-loop connection of one end of the tension spring;

4. The anti-shake structure according to any one of claims 1 to 3, wherein a plurality of the tension springs are provided, and a plurality of the tension springs are arranged at intervals along a circumferential direction of the mount.

5. The anti-shake structure of claim 1, wherein each of the drive coils includes two sides disposed opposite to each other;

6. The anti-shake structure of claim 5, wherein the mounting base is provided with a plurality of mounting holes therethrough, each of the mounting holes being configured to mount a corresponding one of the driving coils;

7. The anti-shake structure of claim 1, further comprising a plurality of limit posts arranged at intervals along the circumferential direction of the base plate, wherein both ends of each limit post are respectively fixed with the base plate and the cover plate;

8. The anti-shake structure of claim 7 further comprising a buffer sleeve over the stopper post.

9. The anti-shake structure of claim 1, wherein the material of the base plate and/or the cover plate is a magnetic material; and/or the number of the groups of groups,

Each magnet is adhered to the corresponding base plate or cover plate.

10. An image pickup apparatus comprising the anti-shake structure according to any one of claims 1 to 9.