Shake compensation device and imaging apparatus

Abstract

A shake compensation device and an imaging apparatus. The shake compensation device comprises: a stator portion (10); a mover portion (20), wherein the mover portion (20) has a first state and a second state; when the mover portion (20) is in the first state, the mover portion (20) remains at a first position relative to the stator portion (10), and when the mover portion (20) is in the second state, the mover portion (20) is located at a second position offset from the first position, the distance between the second position and the first position being the offset distance of the mover portion (20) relative to the stator portion (10); and a reset portion, which is configured to provide a centering force, the magnitude of the centering force being linearly related to the offset distance, allowing the mover portion (20) to switch from the second state to the first state.

Description

Shake compensation device and photographing apparatus TECHNICAL FIELD

[0001] The present disclosure relates to the field of photographing anti-shake technology, and in particular to a shake compensation device and a photographing apparatus. BACKGROUND

[0002] It is a major operation mode for users to hold a photographing apparatus to take images and videos. In the process of handheld photographing, the photographing apparatus is easily affected by the user's shaking, thereby resulting in that a clear image or video cannot be taken. For this reason, a shake compensation device is usually configured on the photographing apparatus in the prior art.

[0003] In the currently adopted shake compensation device, an imaging part is arranged on a moving part, and the moving part is driven by an actuating part to move the imaging part a certain distance relative to a fixed part along with the moving part, so as to compensate for the deviation of the imaging part caused by the user's shaking. In addition, the shake compensation device is also provided with a resetting part to provide a centering force for resetting the moving part and the imaging part.

[0004] However, the relationship between the centering force provided by the resetting part and the deviation distance of the moving part is usually nonlinear, which will affect the stability of the shake compensation device, thereby resulting in that the pictures and / or videos taken by the photographing apparatus are not clear enough.

[0005] SUMMARY

[0006] To solve at least one of the above and other aspects in the prior art, the present disclosure provides a shake compensation device and a photographing apparatus, the centering force provided by the resetting part and the deviation distance of the moving part are in linear relationship, so as to improve the stability of the shake compensation device, and facilitate the images and / or videos taken by the photographing apparatus to be clearer.

[0007] A first aspect of the present disclosure provides a shake compensation device, comprising: a fixed part; a moving part, the moving part having a first state and a second state, when the moving part is in the first state, the moving part is kept at a first position relative to the fixed part; when the moving part is in the second state, the moving part is located at a second position deviated from the first position, the interval between the second position and the first position is the deviation distance of the moving part relative to the fixed part; a resetting part, the resetting part is configured to provide a centering force, the size of the centering force and the deviation distance are in linear relationship, so as to switch the moving part from the second state to the first state.

[0008] A second aspect of the present disclosure provides a shooting device, comprising: a housing; a stator part arranged in the housing; a rotor part, the rotor part having a first state and a second state, when the rotor part is in the first state, the rotor part is kept at a first position relative to the stator part; when the rotor part is in the second state, the rotor part is located at a second position offset from the first position, the distance between the second position and the first position is an offset distance of the rotor part relative to the stator part; a reset part, the reset part is configured to provide a centering force, the size of the centering force is linearly related to the offset distance, so that the rotor part is switched from the second state to the first state; an imaging part arranged on the rotor part and moving with the rotor part relative to the stator part, the imaging part has an imaging end for imaging.

[0009] According to the technical scheme provided by the illustrative embodiment of the present disclosure, the centering force provided by the reset part to the rotor part is linearly related to the offset distance of the rotor part relative to the stator part. When the offset distance is small, the centering force provided by the reset part is small, which can effectively avoid excessive correction of the rotor part when it is reset from the second position to the first position due to excessive force. When the offset distance is large, the centering force provided by the reset part is large, which can shorten the response time required for the reset of the rotor part. In addition, when the rotor part is reset, the centering force decreases with the decrease of the offset distance, which can further prevent the excessive correction of the rotor part. In this way, the stability of the shake compensation device can be effectively improved, and the image and / or video captured by the shooting device can be clearer. BRIEF DESCRIPTION OF DRAWINGS

[0010] Fig. 1 is an exploded view of a shake compensation device according to an illustrative embodiment of the present disclosure;

[0011] Fig. 2 is a simulation curve diagram of the relationship between the centering force and the offset distance of the shake compensation device of the illustrative embodiment shown in Fig. 1;

[0012] Fig. 3 is a partial cross-sectional view of the shake compensation device of the illustrative embodiment shown in Fig. 1, showing an assembly diagram of the first stator assembly and the rotor part;

[0013] Fig. 4 is an exploded view of a second magnetic assembly of the shake compensation device of the illustrative embodiment shown in Fig. 1;

[0014] Fig. 5 is a partial cross-sectional view of the shake compensation device of the illustrative embodiment shown in Fig. 1, showing the self-locking part and the supporting part;

[0015] Fig. 6 is an exploded view of a shooting device according to an illustrative embodiment of the present disclosure.

[0016] In the drawings, the following signs have the following meanings: 10, stator portion; 11, first stator assembly; 12, second stator assembly; 121, first arm; 122, second arm; 20, rotor portion; 30, imaging portion; 40, limiting portion; 41, bolt; 42, second end; 43, cylindrical member; 44, first end; 50, first magnetic assembly; 51, first magnet; 52, second magnet; 53, yoke; 60, second magnetic assembly; 61, third magnet; 62, fourth magnet; 70, detection portion; 80, support portion; 81, first spacer; 82, second spacer; 83, ball; 90, self-locking portion; 100, optical assembly; 110, housing. DETAILED DESCRIPTION

[0017] For the purposes of the present disclosure, the technical solutions and advantages will be more clearly apparent, the following will be combined with specific embodiments, and referring to the drawings, the present disclosure is further described in detail.

[0018] The terms used herein are merely used to describe specific embodiments, and are not intended to limit the present disclosure. The terms "include", "comprise" and the like used herein indicate the presence of the described features, steps, operations and / or components, but do not exclude the presence or addition of one or more other features, steps, operations or components.

[0019] All terms used herein, including technical and scientific terms, have meanings generally understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein should be interpreted as having meanings consistent with the context of the present specification, and should not be interpreted in an idealized or overly formal manner.

[0020] In the case of using expressions similar to "at least one of A, B, and C, etc.", it should be generally interpreted that the meaning of the expression is at least one of the items A, B, and C, etc. For example, the system "having at least one of A, B, and C" should include but not be limited to a system having A alone, a system having B alone, a system having C alone, a system having both A and B, a system having both A and C, a system having both B and C, and / or a system having A, B, and C, etc. In the case of using expressions similar to "at least one of A, B, or C, etc.", it should be generally interpreted that the meaning of the expression is at least one of the items A, B, and C, etc. For example, the system "having at least one of A, B, or C" should include but not be limited to a system having A alone, a system having B alone, a system having C alone, a system having both A and B, a system having both A and C, a system having both B and C, and / or a system having A, B, and C, etc.

[0021] The present disclosure will be described in detail below with reference to the accompanying drawings. The features of the embodiments and implementation described below can be combined with each other as long as there is no conflict.

[0022] Embodiment 1

[0023] Referring to FIGS. 1-5, the present disclosure provides a shake compensation device, comprising a stator portion 10, a mover portion 20 and a reset portion. The mover portion 20 has a first state and a second state, when the mover portion 20 is in the first state, the mover portion 20 is kept at a first position relative to the stator portion 10; when the mover portion 20 is in the second state, the mover portion 20 is located at a second position offset from the first position, and the distance between the second position and the first position is the offset distance of the mover portion 20 relative to the stator portion 10. The reset portion is configured to provide a centering force, the magnitude of the centering force is linearly related to the offset distance, so that the mover portion 20 is switched from the second state to the first state.

[0024] Wherein, the linear relationship between the magnitude of the centering force and the offset distance means that as the offset distance increases, the centering force (i.e. the attractive force between the first magnet 51 and the second magnet 52) forms a positive correlation as a whole, and the centering force also increases approximately uniformly with the increase of the offset distance (or decreases uniformly with the decrease of the offset distance).

[0025] For example, referring to the simulation relationship curve shown in FIG. 2, the vertical axis Force_x represents the force value of the centering force, with the unit of mN (milli-Newton), and the horizontal axis ShiftX represents the offset distance of the mover portion relative to the stator portion in the X direction as shown in FIG. 1, with the unit of mm (millimeter).

[0026] The two fitting curves formed by the two simulation results are shown in FIG. 2. Referring to the two fitting curves, it can be seen that at the position of 0 millimeter offset distance, the force value of the centering force is 0. In the coordinate system formed with this point as the origin, as the offset distance increases in the positive direction (to the right of the origin) and the negative direction (to the left of the origin), the force value of the centering force also increases approximately uniformly, so that the two fitting curves form a relatively smooth linear trend.

[0027] In some illustrative embodiments, the stator portion 10 is configured to be fixedly connected (including but not limited to snap connection, bolt connection, adhesion and other arbitrary ways) with other devices outside (such as the shell 110 of the camera device described below). Further, the mover portion 20 is movably connected relative to the stator portion 10 within a certain range (i.e. within the range defined by the maximum offset distance). If the movement of the stator portion 10 exceeds the above range, it can be considered that the mover portion 20 moves with the stator portion 10 in a three-dimensional space (i.e. the space defined by the X direction, Y direction and Z direction as shown in FIG. 1).

[0028] Referring to FIG. 1, an exploded view of the stator portion 10, the mover portion 20 and the reset portion of the shake compensation device is shown. On this basis, further referring to FIG. 3, the assembly relationship of a part of the stator portion 10, the mover portion 20 and the reset portion is shown.

[0029] Referring to FIG. 3, a state (i.e., a first state) where the mover 20 is at a first position relative to the stator 10 is shown, in which the restoring force provided by the restoring portion to the mover 20 is considered to be 0; correspondingly, when the mover 20 is offset (not including the case where the mover is moved away from the stator along the Y direction shown in FIG. 1, which will be described further below) from the first position, the mover 20 is considered to be at a second position, in which the restoring portion is configured to provide a restoring force (i.e., the restoring force is greater than 0) to the mover 20, and the direction of the restoring force is to make the mover 20 approach the first position, so that the mover 20 is restored to the first position under the action of the restoring force.

[0030] In such an embodiment, when the mover 20 is at the second position, the restoring force provided by the restoring portion to the mover 20 has a substantially linear relationship with the offset distance, and when the offset distance is small, the restoring force provided by the restoring portion is small, which can effectively avoid excessive correction of the mover 20 from the second position to the first position due to excessive force; when the offset distance is large, the restoring force provided by the restoring portion is large, which can shorten the response time required for the mover 20 to be restored, and when the mover 20 is restored, the restoring force decreases with the decrease of the offset distance, thereby further preventing the mover 20 from being excessively corrected. In this way, the stability of the jitter compensation device can be effectively improved, and the image and / or video captured by the imaging device can be clearer.

[0031] In some illustrative embodiments, the mover 20 is translated from the first position to the second position and / or rotated in a plane.

[0032] In some illustrative embodiments, the restoring force is positively correlated with the offset distance.

[0033] Referring to FIG. 1, in some illustrative embodiments, the offset of the mover 20 at the second position relative to the stator 10 includes translation of the mover 20 in the X direction or the Y direction, and rotation formed by superposition of translation of the mover 20 in the X direction and the Y direction. On this basis, the size of the restoring force on the mover 20 at the second position also increases with the increase of the offset distance (i.e., the distance between the second position and the first position).

[0034] Referring to FIG. 1, in some illustrative embodiments, the jitter compensation device further includes an imaging portion 30 for imaging. The imaging portion 30 is arranged on the mover 20 and moves with the mover 20 relative to the stator 10.

[0035] In some illustrative embodiments, the imaging portion 30 includes a circuit board and an imaging sensor, and the imaging sensor is arranged on the circuit board. In detail, the imaging sensor is configured to capture an image, and the circuit board is configured to provide a control signal to the imaging sensor.

[0036] The imaging sensor includes, but is not limited to, a complementary metal-oxide-semiconductor (CMOS), a charge-coupled device (CCD), and any other sensor configured to capture light in the visible spectrum or outside the visible spectrum and form an image.

[0037] Referring to FIG. 1, in some illustrative embodiments, the imaging sensor has a mounting end and an imaging end. In detail, the imaging sensor is connected to the circuit board through the mounting end, and the imaging end is opposite to the mounting end to receive light. Further, the mover 20 is disposed on one side of the mounting end of the imaging sensor (e.g., the lower left side in FIG. 1) and does not block the imaging end of the imaging sensor.

[0038] Referring to FIG. 1, in some illustrative embodiments, the stator 10 includes a first stator assembly 11 and a second stator assembly 12. The first stator assembly 11 and the second stator assembly 12 are stacked and spaced apart in the stacking direction. The mover 20 is disposed between the first stator assembly 11 and the second stator assembly 12.

[0039] Referring to FIG. 1, in some illustrative embodiments, the first stator assembly 11 and the second stator assembly 12 are stacked and spaced apart in the Z direction as shown in FIG. 1. Further, the mover 20 is located in the gap formed by the first stator assembly 11 and the second stator assembly 12 and can slide relative to the stator 10 (i.e., the first stator assembly 11 and the second stator assembly 12) in the X direction and / or the Y direction as shown in FIG. 1.

[0040] In such an embodiment, the first stator assembly 11, the mover 20, and the second stator assembly 12 are assembled in a stacked manner, which not only makes the stator 10 and the mover 20 compact, but also limits the movement of the mover 20 in the Z direction.

[0041] In some illustrative embodiments, the reset portion includes, but is not limited to, a magnetic assembly (i.e., including at least two magnets, and the magnets have an attractive force or a repulsive force relative to each other) or an elastic member (i.e., within the elastic limit, the elastic deformation amount and the elastic force of the elastic member satisfy Hooke's law) to provide a centering force to reset the mover 20. The following embodiments are described in detail for the jitter compensation device using a magnetic assembly as the reset portion.

[0042] Referring to FIG. 3, the resetting portion includes a plurality of first magnetic assemblies 50. Each of the first magnetic assemblies 50 includes a first magnet 51 and a second magnet 52. The first magnet 51 is disposed on the stator portion 10, and the second magnet 52 is disposed on the mover portion 20. An attractive force between the first magnet 51 and the second magnet 52 serves as a centering force.

[0043] In some illustrative embodiments, the resetting portion includes at least two first magnetic assemblies 50, which are spaced apart.

[0044] In an illustrative embodiment, the plurality of first magnetic assemblies 50 are arranged symmetrically about the center of the imaging portion 30 and / or symmetrically about the center. In this way, the centering force provided by each of the first magnetic assemblies 50 is substantially the same.

[0045] In an illustrative embodiment, the first magnet 51 only provides an attractive force to the second magnet 52 that at least partially overlaps the first magnet 51. That is, the first magnet 51 in one of the first magnetic assemblies 50 is only attracted by the second magnet 52 in the same first magnetic assembly 50, and is not attracted by the second magnet 52 in another first magnetic assembly 50.

[0046] Referring to FIG. 3, the resetting portion includes, but is not limited to, two first magnetic assemblies 50, which are symmetrically (and symmetrically about the center) disposed on both sides of the imaging portion 30 (i.e., the center of the imaging portion, not shown in FIG. 3). In this way, the attractive forces generated between the magnets (i.e., the first magnet 51 and the second magnet 52) of the first magnetic assemblies 50 on both sides of the imaging portion 30 are substantially the same, thereby providing a substantially uniform centering force in various directions to the mover portion 20 (including the imaging portion 30) in the second position, to avoid the problem of inaccurate resetting of the mover portion 20 in a certain direction or certain directions due to uneven forces.

[0047] In other illustrative embodiments, the resetting portion includes three first magnetic assemblies 50, which are circumferentially spaced apart about the center of the mover portion 20 in the orthographic projection of the mover portion 20. Correspondingly, the three first magnetic assemblies 50 are symmetrically about the center of the imaging portion 30 in the orthographic projection along the imaging portion 30 (i.e., the projection along the Z direction as shown in FIG. 1). In this way, the centering force received by the mover portion 20 in various directions is further uniform. It should be understood that embodiments of the present disclosure are not limited thereto.

[0048] For example, the number of the first magnetic components 50 arranged around the center of the imaging portion 30 can be 4, 5, 6, 7 or any other number, but as the number of the first magnetic components 50 increases, the magnets in the adjacent first magnetic components are also arranged more densely, which can cause the first magnet 51 in a certain first magnetic component 50 to be attracted by the second magnet 52 in another first magnetic component 50, and also cause the volume occupied by the first magnetic components 50 in the shake compensation device to increase. Therefore, the specific number of the first magnetic components 50 should be designed as a whole to meet the requirements of the restoring force on the mover portion 20 (such as size, uniformity, mutual interference) and the volume occupied.

[0049] For another example, only one first magnetic component 50 can also be configured, and the magnets in the first magnetic component 50 can be configured as a ring, and the axis of the ring-shaped magnet coincides with the projection of the center of the imaging portion 30, so that each part of the ring-shaped magnet provides substantially the same restoring force to the mover portion 20 (including the imaging portion 30).

[0050] Referring to FIG. 3, the first magnet 51 is arranged on the first stator component 11 or the second stator component 12. The second magnet 52 is arranged on the side of the mover portion 20 facing the first magnet 51.

[0051] Referring to FIG. 3, in some illustrative embodiments, the first stator component 11 includes a first base, and the first magnet 51 is arranged on the mounting surface of the first base facing the mover portion 20. Correspondingly, the second magnet 25 should be arranged on the surface (such as the lower surface shown in FIG. 3) of the mover portion 20 facing the first stator component 11 (i.e., the first base).

[0052] Referring to FIGS. 1 and 3, in some illustrative embodiments, the first stator component 11 is a first base configured as a substantially rectangular sheet structure. Correspondingly, the second stator component 12 is configured as a substantially L-shaped sheet structure (i.e., having a first arm 121 and a second arm 122 orthogonal to each other), and in the projection along the Z direction as shown in FIG. 1, the projection of the second stator component 12 coincides with the projection of the first stator component 11, which can be complete coincidence (i.e., the projection of the second stator component 12 is completely located within the projection of the first stator component 11), or partial coincidence (i.e., a part of the projection of the second stator component 12 is located outside the projection of the first stator component 11, and the misaligned part of the second stator component 12 with the first stator component 11 can be used for assembling with other devices of the shake compensation device, or can be used as a mounting base for other devices, or can be designed for functionality, such as structural design, aesthetic design, weight reduction design, etc.).

[0053] On this basis, the shape of the mover portion 20 is configured in response to the structure of the first stator assembly 11 and the second stator assembly 12, and in the orthographic projection along the Z direction as shown in FIG. 1, the projection of the second stator assembly 12 and the mover portion 20 should partially coincide. Further, the imaging portion 30 is arranged at the portion where the projection of the mover portion 20 and the second stator assembly 12 do not coincide.

[0054] In such an embodiment, the first stator assembly 11 configured as a substantially rectangular sheet structure has a large area and can be fully utilized to mount the first magnet 51 to cooperate with the second magnet 52 on the mover portion 20 to provide a return force to reset the mover portion 20 (including the imaging portion 30) from the second position to the first position; the second stator assembly 12 configured as a substantially L-shaped sheet structure ingeniously utilizes the mounting position of the imaging portion 30 on the mover portion 20, which is arranged beside the imaging portion, which is advantageous to reduce the overall thickness of the shake compensation device, and the structure of the shake compensation device can be designed more compact. It should be understood that the embodiments of the present disclosure are not limited thereto.

[0055] For example, the first magnet 51 can also be arranged on the second stator assembly 12; correspondingly, the second magnet 52 is arranged on the surface of the mover portion 20 facing the second stator assembly 12.

[0056] Or as, a plurality of first magnetic assemblies 50 are arranged on the stator portion 10 and the mover portion 20, a part of the first magnets 51 are arranged on the first stator assembly 11, and another part of the first magnets 51 are arranged on the second stator assembly 12; correspondingly, the second magnets 52 are respectively arranged on the two surfaces of the mover portion 20 facing away from each other, and are arranged at positions where the second magnets 52 can generate an attractive force with the corresponding first magnets 51.

[0057] In some illustrative embodiments, the first magnet 51 and the second magnet 52 are permanent magnets.

[0058] In some illustrative embodiments, the first magnetic assembly 50 further comprises a magnetic yoke 53. The magnetic yoke 53 is arranged on the first magnet 51 or the second magnet 52.

[0059] In some illustrative embodiments, the first magnet 51 and the second magnet 52 are cylindrical and axially magnetized. Among them, the magnetic properties of the end portions of the first magnet 51 and the second magnet 52 facing each other are opposite.

[0060] Referring to FIG. 3, in some illustrative embodiments, the first magnet 51 and the second magnet 52 are both configured as a relatively flat (i.e., small thickness) cylinder. In detail, the first magnet 51 is disposed on the upper surface of the first stator assembly 51, the second magnet 52 is disposed on the lower surface of the mover portion 20, and is axially magnetized. For example, the upper end of the first magnet 51 can form an S pole, and the lower end forms an N pole; correspondingly, the upper end of the second magnet 52 also forms an S pole, and the lower end forms an N pole, so that the facing ends of the first magnet 51 and the second magnet 52 have an attractive force. The permanent magnet includes, but is not limited to, a ferrite magnet, an alnico magnet, a samarium-cobalt magnet, a ferritic boron magnet, and any other material that can maintain magnetism for a long time.

[0061] Further, the surface of the first magnet 51 facing the second magnet 52 (i.e., the upper surface) is also provided with a magnetic yoke, which includes but is not limited to being bonded to the first magnet 51.

[0062] Continuing to refer to FIG. 3, the middle portion of the first magnet 51 is provided with a through hole in the axial direction, thereby forming a ring-shaped cylindrical structure. In this way, the magnetic flux of the first magnet 51 can mainly flow along the closed path inside and outside the ring, so that the magnetic field of the first magnet 51 is more uniform.

[0063] In such an embodiment, the permanent magnet has a very uniform magnetic field region, and therefore, a highly uniform magnetic field distribution can be formed between the first magnet 51 and the second magnet 52. In this way, when the second magnet 52 moves with the mover portion 20 and is offset from the second magnet 52, the difference in attractive force due to uneven magnetic field distribution does not occur, so that the attractive force between the first magnet 51 and the second magnet 52 can be considered to be related only to the offset distance. Moreover, since the first magnet 51 and the second magnet 52 are configured as a cylinder, the magnetic field around the center of the cylinder is also uniform, so that when the mover portion 20 is offset in various directions, the attractive force received is also uniform. In addition, the permanent magnet can have magnetism for a long time inside the shake compensation device, and the magnetic field is stable and not easily disturbed by external circuit fluctuations, having high reliability.

[0064] On this basis, the magnetic yoke disposed on the first magnet 51 further improves the uniformity of the magnetic field generated by the first magnet 51. In addition, the magnetic yoke can also have the effect of reducing the leakage of the magnetic flux of the permanent magnet, which is beneficial to reducing the leakage of the magnetic flux and enhancing the magnetic field. It should be understood that the embodiments of the present disclosure are not limited thereto.

[0065] In other illustrative embodiments, at least one of the first magnet 51 and the second magnet 52 is an electromagnet.

[0066] For example, one of the first magnet 51 and the second magnet 52 is an electromagnet.

[0067] Or, the first magnet 51 and the second magnet 52 are both electromagnets.

[0068] On this basis, in order to realize that the first magnet 51 and the second magnet 52 form a uniform magnetic field, the shape of the electromagnet (such as the shape and / or number of turns of the coil) and the control of the electromagnet (such as current and voltage) can be designed, so that the electromagnet forms a relatively uniform magnetic field in the energized state.

[0069] In some illustrative embodiments, when the mover portion 20 is in the first state, in the orthographic projection of the mover portion 20, the projection of the second magnet 52 and the first magnet 51 coincide. When the mover portion 20 is in the second state, in the orthographic projection of the mover portion 20, the projection of the second magnet 52 and the first magnet 51 at least partially coincide.

[0070] In some illustrative embodiments, when the mover portion 20 is in the first state, the axes of the second magnet 52 and the first magnet 51 coincide. When the mover portion 20 is in the second state, the axes of the second magnet 52 and the first magnet 51 are offset.

[0071] In some illustrative embodiments, the diameter of the first magnet 51 is configured to be greater than the diameter of the second magnet (52).

[0072] Referring to FIG. 3, the diameter of the first magnet 51 is configured to be slightly larger than the diameter of the second magnet, and the specific difference includes but is not limited to being configured to 1 millimeter, 2 millimeters, 3 millimeters, 4 millimeters, 5 millimeters and other arbitrary values. In this way, when the mover portion 20 is in the first state, in the projection along the axial direction of the first magnet 51, the projection of the second magnet 52 can be completely located within the projection of the first magnet 51 (i.e. the projection of the second magnet 52 coincides with the projection of the first magnet 51), and the axes also coincide.

[0073] In such an embodiment, the diameter of the first magnet 51 is configured to be slightly larger than the diameter of the second magnet 52, which can make the magnetic field formed by the first magnet 51 better cover the second magnet 52, so that the magnetic field is more concentrated in the area between the two magnets (i.e. the first magnet 51 and the second magnet), and is conducive to forming a uniform magnetic field distribution, which is conducive to the mover portion 20 to be more stable in the first position, thereby avoiding the mover portion 20 to be too sensitive and frequently reset, and also conducive to improving the positioning accuracy of the mover portion 20 relative to the first position. It should be understood that the embodiments of the present disclosure are not limited thereto.

[0074] For example, in other illustrative embodiments, the diameter of the first magnet 51 can be configured to be less than or equal to the diameter of the second magnet 52.

[0075] Referring to FIG. 1, in some illustrative embodiments, when the mover 20 is in the second state, the first magnetic assembly 50 is configured to exert a centering force on the mover 20 along the first direction and / or the second direction.

[0076] Referring to FIG. 1, in some illustrative embodiments, the attractive force between the first magnet 51 and the second magnet 52 along the first direction and / or the second direction increases approximately linearly with the increase of the offset distance.

[0077] Referring to FIG. 1, in some illustrative embodiments, when the mover 20 is in the first state, the first magnet 51 and the second magnet 52 have an attractive force along the third direction. In one illustrative embodiment, when the mover 20 is in the first state, the first magnet 51 and the second magnet 52 only have an attractive force along the third direction.

[0078] In some illustrative embodiments, as shown in FIG. 1, based on the assembly manner of the mover 20 being stacked between the first stator assembly 11 and the second stator assembly 12, the displacement of the mover 20 in the third direction (i.e., the Z direction as shown in FIG. 1) is limited by the stator 10. That is, the mover 20 can only be offset along the first direction (i.e., the X direction as shown in FIG. 1), the second direction (i.e., the Y direction as shown in FIG. 1), and the direction in which the first direction and the second direction are superimposed.

[0079] On this basis, in response to the magnetism of the first magnet 51 and the second magnet 52, the mover 20 in the first position is only subjected to an attractive force along the third direction (i.e., the Z direction as shown in FIG. 1), so that the shake compensation device (or the photographing apparatus) remains in the first position when no shake occurs.

[0080] When the mover 20 is offset to the second position (i.e., in the second state), the component of the attractive force between the first magnet 51 and the second magnet 52 along the first direction and / or the second direction forms a centering force, and since the first magnet 51 and the second magnet 52 are both configured as a cylinder, the centering force on the mover 20 in the offset along the radial direction of the magnet (i.e., the first direction, the second direction, and the direction in which the first direction and the second direction are superimposed) has an approximately linear relationship with the offset distance.

[0081] Referring to FIG. 1 and FIG. 4, in some illustrative embodiments, the shake compensation device further comprises an actuating portion configured to provide an actuating force on the mover 20 to switch the mover 20 from the first state to the second state against the centering force.

[0082] Referring to FIGS. 1 and 4, in some illustrative embodiments, the actuating portion includes a plurality of second magnetic assemblies 60, each of which includes a third magnet 61 and a fourth magnet 62. The third magnet 61 is disposed on the stator portion 10, and the fourth magnet 62 is disposed on the mover portion 20.

[0083] In some illustrative embodiments, at least one of the third magnet 61 and the fourth magnet 62 is an electromagnet. Further, the third magnet 61 is a permanent magnet, and the fourth magnet 62 is an electromagnet.

[0084] Referring to FIGS. 1 and 4, each second magnetic assembly 60 includes, but is not limited to, two pairs of third magnets 61 and one fourth magnet 62. In detail, the two pairs of third magnets 61 are disposed in the mounting slots of the first stator assembly 11 and the second stator assembly 12, respectively, and in the orthographic projection (projection along the Z direction as shown in FIG. 1) of the stator portion 10, the projections of the two third magnets 61 in the same second magnetic assembly 60 at least partially overlap. Further, the fourth magnet 62 is disposed on the mover portion 20 and also corresponds to the two third magnets 61 in position.

[0085] In one illustrative embodiment, as shown in FIGS. 1 and 4, the third magnet 61 disposed on the stator portion 10 is a permanent magnet, which includes, but is not limited to, a cubic shape, and the two third magnets 61 in each pair are disposed at intervals. Further, the fourth magnet 62 on the mover portion 20 is an electromagnet. The electromagnet includes, but is not limited to, a coil, which can be formed in a racetrack shape by winding a plurality of turns of wire, and the long direction of the racetrack-shaped coil corresponds to the long direction of the third magnet 61. Correspondingly, a flexible circuit board is also disposed on the mover portion 20, which is connected to a control circuit (not shown in the figure) disposed on the mover portion 20 to supply power to the fourth magnet 62. The electromagnet 62 has magnetism in the conducting state (i.e., the state with current passing through) to be attracted or repelled by the third magnet 61.

[0086] In such an embodiment, after the fourth magnet 62 is powered on, the mover portion 20 is subjected to the attractive force or repulsive force provided by the third magnet 61, causing the mover portion to be offset to drive the imaging portion 30 to move synchronously in the first direction and / or the second direction, thereby compensating for the displacement caused by the jitter of the imaging portion 30 in other directions than the third direction. It should be understood that embodiments of the present disclosure are not limited thereto.

[0087] For example, in addition to the above-mentioned adjustment of the magnetic field strength of the fourth magnet 62 by changing the direction and magnitude of the current passing through the coil, the magnetic field strength of the fourth magnet 62 can also be adjusted by changing the voltage.

[0088] Referring to FIG. 4, in some illustrative embodiments, the shake compensation device includes at least two second magnetic assemblies 60. One of the second magnetic assemblies 60 is configured to apply an actuating force in the first direction to the mover 20, and the other second magnetic assembly 60 is configured to apply an actuating force in the second direction to the mover 20.

[0089] Continuing to refer to FIG. 4, in some illustrative embodiments, the shake compensation device includes, but is not limited to, three second magnetic assemblies 60. In detail, to adapt to the shape of the second stator assembly 12, two of the second magnetic assemblies 60 are arranged side by side on the first arm 121 (extending in the Y direction as shown in FIG. 1) of the L-shaped second stator assembly 12, and the other second magnetic assembly is arranged on the second arm 122 (extending in the X direction as shown in FIG. 1) of the L-shaped second stator assembly 12. The first arm 121 and the second arm 122 are configured to be substantially perpendicular, and the first arm 121 is longer than the second arm 122.

[0090] Based on the arrangement positions of the three second magnetic assemblies 60, the mover 20 (including the imaging portion 30) can be driven to move in the first direction (i.e., the X direction as shown in FIG. 1), the second direction (i.e., the Y direction as shown in FIG. 1), and the direction in which the first direction and the second direction are superimposed, respectively. Since the first direction and the second direction are orthogonal to each other, by reasonably controlling the currents of the fourth magnets 62 on the first arm 121 and the fourth magnets on the second arm 122, the movement of the imaging portion 30 in any direction other than the third direction can be achieved to compensate for the shake caused by the user. Further, the currents in the different fourth magnets 62 in the on state can be the same or different. Since the distance between the two fourth magnets 62 on the first arm 121 and the fourth magnet 62 on the second arm 122 is different, a certain distance difference is formed, which can cause the magnetic forces acting on the adjacent fourth magnets to form a torque, thereby enabling the adjacent fourth magnets 62 to move in opposite directions to enable the mover 20 (including the imaging portion 30) to rotate in the direction in which the first direction and the second direction are superimposed.

[0091] For example, when the shake direction coincides with the first direction or the second direction, one of the fourth magnets 62 on the first arm 121 or the second arm 122 can be controlled to be on, thereby causing the mover 20 to translate in the direction opposite to the shake direction in the first direction or the second direction.

[0092] For example, when the shaking direction is not coincident with the first direction and the second direction (i.e., forming an angle), the fourth magnet 62 on the first arm 121 and the second arm 122 can be controlled to be turned on, so as to decompose the shaking into two components along the first direction and the second direction, and control the fourth magnet 62 on the first arm 121 and the second arm 122 in the turned-on state to cause the mover 20 to translate in a direction opposite to the above-mentioned component direction, so as to compensate for the shaking caused by the two components. It should be understood that embodiments of the present disclosure are not limited thereto.

[0093] For example, the number of the second magnetic assemblies 60 can be set to 2, 4, 5, 6, 7, 8, 9, 10, and any other number.

[0094] For example, the number and length of the second magnetic assemblies 60 arranged along the first direction and / or the second direction can also be adaptively designed according to the offset distance. Among them, the more the number of the second magnetic assemblies 60 configured, the stronger the actuating force provided by the mover 20, and the better the compensation effect on the shaking, but it will also lead to a more dense second magnetic assembly 60. Therefore, the overall design of other parts of the shaking compensation device should also be considered to reserve the required installation space, circuit arrangement space, and magnetic circuit space.

[0095] Continuing to refer to FIG. 4, the shaking compensation device further comprises a detection portion 70. When the mover 20 is in the second state, the detection portion 70 is configured to detect the distance between the second position and the first position of the mover 20.

[0096] In some illustrative embodiments, as shown in FIG. 4, the detection portion 70 comprises at least two detection members. Among them, one detection member is configured to detect the position of the mover 20 along the first direction, and the other detection member is configured to detect the displacement of the mover 20 along the second direction.

[0097] Referring to FIG. 4, in some illustrative embodiments, the detection portion 70 comprises but is not limited to two detection members. In detail, one detection member is arranged in the fourth magnet 62 (i.e., coil) on the first arm 121, and the other detection member is arranged in the fourth magnet 62 (i.e., coil) on the second arm 122, so as to detect the magnetic field and the magnetic field intensity of the two fourth magnets 62 in different directions, respectively. Among them, the detection member comprises but is not limited to a Hall sensor.

[0098] In such an embodiment, since the third magnet 61 is a permanent magnet, it can be considered that the magnetic field provided thereby is stable and uniform. On this basis, the direction and distance of the displacement of the mover 20 are only related to the magnetic field and magnetic field strength of the fourth magnet 62 in the on state. Since the fourth magnet 62 is an electromagnet, the current and voltage inside it are known, and therefore, by measuring the magnetic field of the fourth magnet 62 by the detection member, the displacement of the mover 20 in the first direction and / or the second direction can be obtained by relevant calculation. It should be understood that the embodiments of the present disclosure are not limited thereto.

[0099] For example, the detection member can also be arranged at other positions of the mover 20, so as to be suitable for detecting the magnetic field of the fourth magnet 62.

[0100] For another example, the number of detection members can also be set to three or more (including but not limited to three, four, five, six, seven, eight or any other number). It should be noted that the detection members should be arranged at intervals, such as being arranged in the gap formed by the adjacent fourth magnets 62, so as to facilitate reducing the magnetic circuit influence between the detection members and the fourth magnets 62. Similar to the arranged fourth magnets 62, the more the number of detection members is set, the more conducive it is to accurately obtain the displacement distance of the mover 20, but it also occupies a larger space accordingly, and therefore, the design should be made from the whole of the jitter compensation device.

[0101] Referring to FIG. 5, in some illustrative embodiments, the jitter compensation device further comprises a support portion 80. The support portion 80 is arranged between the mover 20 and the stator 10. When the mover 20 is in the second state, the support portion 80 moves relative to the stator 10.

[0102] Referring to FIG. 5, in some illustrative embodiments, the support portion 80 comprises a first pad 81, a second pad 82 and a ball 83. The first pad 81 is arranged on the stator 10. The second pad 82 is arranged on the mover 20. The ball 83 is arranged between the first pad 81 and the second pad 82 in a rolling manner. At least one of the first pad 81 and the second pad 82 forms a containing groove, and the ball 83 is arranged in the containing groove in a rolling manner.

[0103] In some illustrative embodiments, as shown in FIG. 5, the first gasket 81 is arranged on the first stator assembly 11, and the second gasket 82 is arranged on the mover 20. In the orthographic projection of the mover 20 along the Z direction, the first gasket 81 and the second gasket 82 overlap. In detail, the second gasket 82 is provided with a receiving groove suitable for accommodating the rolling of the ball 83. The width of the receiving groove (e.g. the diameter of the receiving groove if the receiving groove is circular) is configured to be greater than the diameter of the ball, so that the ball 83 rolls in the space defined by the receiving groove, thereby reducing the friction between the mover 20 and the stator 10 during the offset process, to prevent the offset of the mover 20 from being not smooth or causing abnormal noise.

[0104] Further, the support portion 80 can be configured in multiple and arranged uniformly between the mover 20 and the stator 10. Since the first magnetic assembly 5 provides an attractive force along the third direction, the first gasket 81 and the second gasket 82 can be tightly pressed on the ball, so that the mover 20 and the first stator assembly 11 are always maintained at a suitable distance. In this way, the sliding friction between the mover 20 and the stator 10 except the support portion 80 can be effectively prevented, and the mover 20 and the first stator assembly 11 can be prevented from being separated along the Z direction as shown in FIG. 1. It should be understood that the embodiments of the present disclosure are not limited thereto.

[0105] For example, the support portion 80 can also be provided by an air cushion, a liquid floating pad, and a support block made of a material with a low friction coefficient (e.g. tetrafluoroethylene), to provide smaller sliding friction.

[0106] For another example, the shape of the first gasket 81 and / or the second gasket 82, and the shape of the receiving groove formed in the gasket can be designed according to actual needs, such as disc-shaped, oval-shaped, triangular-shaped, rectangular-shaped, other polygonal-shaped, and irregular-shaped structures.

[0107] Based on the embodiments with the above-mentioned support portion 80, and with reference to FIG. 5, in some illustrative embodiments, the jitter compensation device further comprises a self-locking portion 90. The self-locking portion 90 has a third state of pressing on the second gasket 82 and a fourth state of being separated from the second gasket 82. When the self-locking portion 90 is in the third state, the first gasket 81 and the second gasket 82 tightly press on the two opposite sides of the ball 83 to limit the rolling of the ball 83, so that the mover 20 is kept in the first state.

[0108] In some illustrative embodiments, as shown in FIG. 5, the self-locking portion 90 includes but is not limited to an electric push rod. In detail, the electric push rod is arranged on the second stator assembly 12, and the extension end of the electric push rod penetrates through the second stator assembly 12 and faces the support portion 80.

[0109] In the third state, the telescopic end is not in contact with (or in contact but not exerting pressure on) the second gasket 82, so that the mover 20 can be relatively offset from the stator 10; in the fourth state, the telescopic end is pressed against the support 80 (i.e. the second gasket 82), and the bottom of the second gasket 82 is deformed to the side of the first gasket 81 (downward as shown in FIG. 5) under the pressure, so that the frictional force on the ball 83 is increased until the ball 83 cannot roll between the first gasket 81 and the second gasket 82, thereby limiting the offset of the mover 20 relative to the stator 10, so that the mover is kept in the first position (i.e. the first state). In this way, the random offset of the mover 20 (including the imaging portion 30) caused by the failure of the actuation portion 60 of the anti-shake compensation device (such as the fourth magnet 62 being powered off) can be avoided.

[0110] Referring to FIG. 5, in some illustrative embodiments, the anti-shake compensation device includes a limiting portion 40. The limiting portion 40 has a limiting position, and when the mover 20 is in the second state and reaches the limiting position, the limiting portion 40 limits the further movement of the mover 20 relative to the stator 10.

[0111] Continuing to refer to FIG. 5, in some illustrative embodiments, the limiting portion 40 includes a plurality of limiting members, which are arranged on the stator 10 and spaced around the mover 20.

[0112] In some illustrative embodiments, as shown in FIG. 5, the limiting portion 40 includes a cylindrical member 43. In detail, the cylindrical member 43 includes a first end 44 (the lower end as shown in FIG. 5) embedded in the first stator assembly 11 and a second end 42 (the upper end as shown in FIG. 5) embedded in the second stator assembly 12. Further, the limiting portion 40 further includes a bolt 41 arranged on the second end 42, and the diameter of the larger end (the upper end as shown in FIG. 5) of the bolt 41 is larger than the diameter of the through hole formed by the second stator assembly 42, so that the larger end of the bolt 41 is pressed against the surface (the upper surface as shown in FIG. 5) of the second stator assembly 12 to connect the first stator assembly 11 and the second stator assembly 12, thereby forming the stator 10 as a whole.

[0113] In some illustrative embodiments, as shown in FIG. 5, the first end 41 and the second end 42 of the cylindrical member 43 are formed with outwardly protruding shoulder portions, so as to abut against the facing surfaces of the first stator assembly 11 and the second stator assembly 12 (i.e. the upper surface of the first stator assembly and the lower surface of the second stator assembly), so that the gap between the first stator assembly 11 and the second stator assembly 12 is constant. Further, the middle portion between the first end 41 and the second end 42 has a smaller diameter than the shoulder portions, and correspondingly, the mover portion 20 is further provided with a limiting hole which is adapted to the middle portion of the cylindrical member 43, and the limiting hole has a hole diameter which is larger than the outer diameter of the middle portion of the cylindrical member 43, so that the mover portion 20 can be offset within the space defined by the limiting hole. The maximum offset distance of the mover portion 20 along a direction is half of the difference between the inner diameter of the limiting hole and the diameter of the middle portion of the cylindrical member 43.

[0114] In some illustrative embodiments, the number of the limiting portions 40 includes but is not limited to 3, so that the maximum offset distance of the mover portion 20 relative to the stator portion 10 is limited by the plurality of limiting portions 40 collectively, so as to prevent the second magnet 52 on the mover portion 20 from being misaligned to a position where the linear relationship with the first magnet 51 is lost (e.g. the second magnet 52 is completely misaligned with the first magnet 51). It should be understood that the embodiments of the present disclosure are not limited thereto.

[0115] For example, the limiting portions 40 can include a plurality of different limiting members, each of which is adapted to limit the offset of the mover portion 20 relative to the stator portion 10 along different directions (i.e. the first direction and / or the second direction).

[0116] For another example, the number of the limiting portions 40 can be configured as 1, 2, 4, 5 or any other number.

[0117] Embodiment Two

[0118] Referring to FIGS. 1-6, the present disclosure further provides a photographing device, which includes a housing 110, a stator portion 10, a mover portion 20, a resetting portion and an imaging portion 30. The stator portion 10 is disposed in the housing 110. The mover portion 20 has a first state and a second state, when the mover portion 20 is in the first state, the mover portion 20 is kept at a first position relative to the stator portion 10; when the mover portion 20 is in the second state, the mover portion 20 is located at a second position which is offset from the first position, and the distance between the second position and the first position is an offset distance of the mover portion 20 relative to the stator portion 10. The resetting portion is configured to provide a centering force, and the magnitude of the centering force is linearly related to the offset distance, so as to switch the mover portion 20 from the second state to the first state. The imaging portion 30 is disposed on the mover portion 20 and moves with the mover portion 20 relative to the stator portion 10, and the imaging portion 30 has an imaging end which is configured to image.

[0119] Taking the camera as an example, the photographing device further comprises an optical assembly 100, which comprises but is not limited to a lens.

[0120] In some illustrative embodiments, the lens is connected (detachably or non-detachably) to the housing 110 through a clamping assembly (not shown in the figures). In detail, the lens comprises an optical lens and a viewfinder window, which should be arranged to face the imaging end of the imaging portion 30, so that light enters the viewfinder window through the optical lens of the lens and finally irradiates on the imaging end of the imaging portion 30.

[0121] In some illustrative embodiments, as shown in FIG. 1 and FIG. 6, the imaging portion 30 comprises a circuit board and an imaging sensor, and the sensor is arranged on the circuit board. In detail, the imaging sensor is configured to take pictures and / or videos, and the circuit board is configured to provide control signals to the imaging sensor. Among them, the imaging sensor comprises but is not limited to a complementary metal-oxide semiconductor (CMOS), a charge-coupled device (CCD), and any sensor configured to collect visible light or light spectrum other than visible light and form an image.

[0122] Referring to FIG. 1 and FIG. 6, in some illustrative embodiments, the imaging sensor has a mounting end and an imaging end. In detail, the imaging sensor is connected to the circuit board through the mounting end, and the imaging end is opposite to the mounting end to receive light. Further, the shake compensation device (including the mover portion 20) is arranged on the side of the imaging end (such as the lower left side shown in FIG. 1) and does not block the imaging end of the imaging sensor.

[0123] In such an embodiment, when the user uses the lens of the photographing device (i.e. the camera) to take pictures of the external target, the mover portion 20 is configured to compensate for the shake of the imaging portion 30 under the drive of the actuator portion 60 (i.e. the mover portion 20 is in the second position deviated from the first position, i.e. the second state). When the mover portion 20 is in the second state, the reset portion provides a return force to the mover portion 20, which has a substantially linear relationship with the offset distance. When the offset distance is small, the reset portion provides a small return force, which can more effectively avoid excessive correction of the mover portion 20 from the second position to the first position due to excessive force. When the offset distance is large, the reset portion provides a large return force, which can shorten the response time required for the reset of the mover portion 20, and when the mover portion 20 is reset, the return force decreases with the shortening of the offset distance, which can further prevent the excessive correction of the mover portion 20. In this way, the stability of the shake compensation device can be effectively improved, so that the images and / or videos taken by the photographing device are clearer.

[0124] It should also be noted that the directional terms mentioned in the embodiments, such as "upper", "lower", "front", "back", "left", "right", etc., are only with reference to the drawings and are not intended to limit the protection scope of the present disclosure. Throughout the drawings, the same elements are denoted by the same or similar reference numerals. When it may cause confusion to the understanding of the present disclosure, the conventional structures or configurations will be omitted.

[0125] The above describes the embodiments of the present disclosure. However, these embodiments are only for illustrative purposes, and are not intended to limit the scope of the present disclosure. Although each embodiment is described above separately, this does not mean that the measures in each embodiment cannot be used advantageously in combination. The scope of the present disclosure is defined by the appended claims and their equivalents. Without departing from the scope of the present disclosure, those skilled in the art can make various substitutions and modifications, which should all fall within the scope of the present disclosure.

Claims

1. A dither compensation apparatus, wherein, The application relates to a magnetic actuator comprising: a stator part; a mover part having a first state and a second state, when the mover part is in the first state, the mover part is kept in a first position relative to the stator part; when the mover part is in the second state, the mover part is in a second position offset from the first position, the distance between the second position and the first position is an offset distance of the mover part relative to the stator part; a resetting part configured to provide a centering force, the magnitude of the centering force is linearly related to the offset distance, so as to switch the mover part from the second state to the first state.

2. The jitter compensation apparatus of claim 1, wherein The magnitude of the centering force is positively related to the offset distance.

3. The jitter compensation apparatus of claim 1, wherein The mover part is translated from the first position and / or rotated in a plane to the second position.

4. The jitter compensation apparatus of claim 1, wherein The resetting part comprises a plurality of first magnetic assemblies, each of the first magnetic assemblies comprises a first magnet and a second magnet, the first magnet is arranged on the stator part, and the second magnet is arranged on the mover part. The attractive force between the first magnet and the second magnet serves as the centering force.

5. The jitter compensation apparatus of claim 4, wherein The stator part comprises a first stator assembly and a second stator assembly, the first stator assembly and the second stator assembly are arranged in a stacking manner and are arranged at intervals in the stacking direction. The mover part is arranged between the first stator assembly and the second stator assembly.

6. The jitter compensation apparatus of claim 5, wherein The first magnet is arranged on the first stator assembly or the second stator assembly. The second magnet is arranged on a side of the mover part facing the first magnet.

7. The jitter compensation apparatus of claim 6, wherein The first stator assembly comprises a first base, and the first magnet is arranged on a mounting surface of the first base facing the mover part.

8. The jitter compensation apparatus of claim 4, wherein The first magnet and the second magnet are permanent magnets.

9. The jitter compensation apparatus of claim 8, wherein The first magnet and the second magnet are cylindrical and are axially magnetized. The magnetic properties of the end portions of the first magnet and the second magnet facing each other are opposite.

10. The jitter compensation apparatus of claim 9, wherein When the mover part is in the first state, in the orthographic projection of the mover part, the projection of the second magnet and the first magnet coincide. When the mover part is in the second state, in the orthographic projection of the mover part, the projection of the second magnet and the first magnet at least partially coincide.

11. The jitter compensation apparatus of claim 9, wherein When the mover part is in the first state, the axes of the second magnet and the first magnet coincide.

12. The jitter compensation apparatus of claim 4, wherein, The diameter of the first magnet is configured to be greater than the diameter of the second magnet.

13. The jitter compensation apparatus of claim 4, wherein, The diameter of the first magnet is configured to be less than or equal to the diameter of the second magnet.

14. The jitter compensation apparatus of claim 4, wherein, The first magnetic assembly further comprises a magnetic yoke. The magnetic yoke is arranged on the first magnet or the second magnet.

15. The jitter compensation apparatus of claim 4, wherein, At least one of the first magnet and the second magnet is an electromagnet.

16. The jitter compensation apparatus according to any one of claims 4 to 15, wherein When the mover part is in the second state, the first magnetic assembly is configured to exert a centering force on the mover part in a first direction and / or a second direction.

17. The jitter compensation apparatus of claim 16, wherein, The attractive force between the first magnet and the second magnet in the first direction and / or the second direction is linearly increased with the increase of the offset distance.

18. The jitter compensation apparatus of claim 17, wherein, When the mover part is in the first state, the first magnet and the second magnet have an attractive force in a third direction.

19. The jitter compensation apparatus of claim 18, wherein, There is only attractive force between the first magnet and the second magnet along the third direction when the mover is in the first state.

20. The jitter compensation apparatus of claim 4, wherein, At least two first magnetic assemblies are included, and the at least two first magnetic assemblies are arranged at intervals.

21. The jitter compensation apparatus of claim 4, wherein, Three first magnetic assemblies are included, and in the orthographic projection of the mover, the projections of the three first magnetic assemblies are arranged at intervals around the middle part of the mover.

22. The jitter compensation apparatus of claim 20 or 21, wherein An imaging part is further included for imaging. The imaging part is arranged on the mover and moves with the mover relative to the stator.

23. The jitter compensation apparatus of claim 22 wherein, The first magnetic assemblies are arranged symmetrically about the center of the imaging part and / or symmetrically about the center.

24. The jitter compensation apparatus of claim 20 or 21, wherein The first magnet only provides attractive force to the second magnet which at least partially overlaps with the first magnet.

25. The jitter compensation apparatus of claim 16, wherein, An actuating part is further included, and the actuating part is configured to provide an actuating force to the mover to switch the mover from the first state to the second state against the centering force.

26. The jitter compensation apparatus of claim 25 wherein, The actuating part includes a plurality of second magnetic assemblies, and each second magnetic assembly includes a third magnet and a fourth magnet. The third magnet is arranged on the stator, and the fourth magnet is arranged on the mover.

27. The jitter compensation apparatus of claim 26 wherein, At least one of the third magnet and the fourth magnet is an electromagnet.

28. The jitter compensation apparatus of claim 27 wherein, The third magnet is a permanent magnet, and the fourth magnet is an electromagnet.

29. The dither compensation apparatus of any one of claims 26 to 28, wherein, At least two second magnetic assemblies are included. One of the second magnetic assemblies is configured to provide an actuating force to the mover along the first direction, and the other second magnetic assembly is configured to provide an actuating force to the mover along the second direction.

30. The jitter compensation apparatus of claim 1, wherein, A detecting part is further included, and the detecting part is configured to detect the distance between the first position and the second position of the mover when the mover is in the second state.

31. The jitter compensation apparatus of claim 30 wherein, The detecting part includes at least two detecting members. One of the detecting members is configured to detect the position of the mover along the first direction, and the other detecting member is configured to detect the displacement of the mover along the second direction.

32. The jitter compensation apparatus according to any one of claims 1 to 3, wherein A supporting part is further included, and the supporting part is arranged between the mover and the stator. The mover moves relative to the stator through the supporting part when the mover is in the second state.

33. The jitter compensation apparatus of claim 32 wherein, The supporting part includes: A first gasket arranged on the stator; A second gasket arranged on the mover; and A ball arranged between the first gasket and the second gasket in a rolling manner. At least one of the first gasket and the second gasket forms a receiving groove, and the ball is arranged in the receiving groove in a rolling manner.

34. The jitter compensation apparatus of claim 33 wherein, A self-locking part is further included, and the self-locking part has a third state in which the self-locking part is pressed against the second gasket and a fourth state in which the self-locking part is separated from the second gasket. When the self-locking part is in the third state, the first gasket and the second gasket are tightly pressed against the two opposite sides of the ball to limit the rolling of the ball, so that the mover is kept in the first state.

35. The jitter compensation apparatus according to any one of claims 1 to 3, wherein A limiting part is further included, and the limiting part has a limiting position. The limiting portion limits further movement of the mover portion relative to the stator portion when the mover portion is in the second state and reaches the limiting position.

36. The jitter compensation apparatus of claim 35 wherein, The limiting portion includes a plurality of limiting members arranged on the stator portion and spaced around the mover portion.

37. A photographing apparatus, comprising: Comprise: a housing; a stator portion arranged in the housing; a mover portion, the mover portion having a first state and a second state, when the mover portion is in the first state, the mover portion is kept in a first position relative to the stator portion; when the mover portion is in the second state, the mover portion is located in a second position offset from the first position, the distance between the second position and the first position is the offset distance of the mover portion relative to the stator portion; a reset portion configured to provide a centering force, the magnitude of the centering force being linearly related to the offset distance, so that the mover portion switches from the second state to the first state; an imaging portion arranged on the mover portion and moves with the mover portion relative to the stator portion, the imaging portion has an imaging end for imaging.

38. The photographing apparatus according to claim 37, wherein The magnitude of the centering force is positively related to the offset distance.

39. The photographing apparatus according to claim 37, wherein The mover portion is translated from the first position and / or rotated in a plane to the second position.

40. The photographing apparatus according to claim 37, wherein The reset portion includes a plurality of first magnetic assemblies, the first magnetic assembly includes a first magnet and a second magnet, the first magnet is arranged on the stator portion, and the second magnet is arranged on the mover portion. The attractive force between the first magnet and the second magnet serves as the centering force.

41. The photographing apparatus according to claim 40, wherein The stator portion includes a first stator assembly and a second stator assembly, the first stator assembly and the second stator assembly are arranged in a stacked manner and are spaced apart in the stacking direction; The mover portion is arranged between the first stator assembly and the second stator assembly.

42. The photographing apparatus according to claim 41, wherein The first magnet is arranged on the first stator assembly or the second stator assembly; The second magnet is arranged on the side of the mover portion facing the first magnet.

43. The photographing apparatus according to claim 42, wherein The first stator assembly includes a first base, and the first magnet is arranged on the mounting surface of the first base facing the mover portion.

44. The photographing apparatus of claim 40, wherein, The first magnet and the second magnet are permanent magnets.

45. The photographing apparatus according to claim 44, wherein, The first magnet and the second magnet are cylindrical and axially magnetized. The magnetic properties of the end portions of the first magnet and the second magnet facing each other are opposite.

46. The photographing apparatus according to claim 45, wherein In the orthographic projection of the mover portion when the mover portion is in the first state, the projections of the second magnet and the first magnet coincide; In the orthographic projection of the mover portion when the mover portion is in the second state, the projections of the second magnet and the first magnet at least partially coincide.

47. The photographing apparatus according to claim 45, wherein When the mover portion is in the first state, the axes of the second magnet and the first magnet coincide.

48. The photographing apparatus according to claim 40, wherein The diameter of the first magnet is configured to be greater than the diameter of the second magnet.

49. The photographing apparatus according to claim 40, wherein The diameter of the first magnet is configured to be less than or equal to the diameter of the second magnet.

50. The photographing apparatus of claim 40, wherein, The first magnetic assembly further includes a magnetic yoke; The magnetic yoke is arranged on the first magnet or the second magnet.

51. The photographing apparatus of claim 40, wherein, At least one of the first magnet and the second magnet is an electromagnet.

52. The photographing apparatus according to any one of claims 40 to 51, wherein The first magnetic assembly is configured to apply a centering force to the mover in a first direction and / or a second direction when the mover is in the second state.

53. The photographing apparatus according to claim 52, wherein The attraction force between the first magnet and the second magnet in the first direction and / or the second direction increases linearly with the increase of the offset distance.

54. The photographing apparatus according to claim 53, wherein The first magnet and the second magnet have an attraction force in a third direction when the mover is in the first state.

55. The photographing apparatus according to claim 54, wherein The first magnet and the second magnet only have an attraction force in the third direction when the mover is in the first state.

56. The photographing apparatus according to claim 40, wherein The first magnetic assembly includes at least two first magnetic assemblies, which are spaced apart.

57. The photographing apparatus according to claim 40, wherein The first magnetic assembly includes three first magnetic assemblies, and the projections of the three first magnetic assemblies are spaced apart around the middle of the mover in the orthographic projection of the mover.

58. The photographing apparatus according to claim 56 or 57, wherein The imaging portion is further included and is configured to image. The imaging portion is arranged on the mover and moves with the mover relative to the stator.

59. The photographing apparatus of claim 58, wherein, The first magnetic assembly is arranged symmetrically around the center of the imaging portion, so that the centering force provided by each first magnetic assembly is substantially the same.

60. The photographing apparatus according to claim 56 or 57, wherein The first magnet only provides an attraction force to the second magnet that at least partially overlaps with the first magnet.

61. The photographing apparatus according to claim 52, wherein The actuating portion is further included and is configured to provide an actuating force to the mover to switch the mover from the first state to the second state against the centering force.

62. The photographing apparatus according to claim 61, wherein The actuating portion includes a second magnetic assembly, and each second magnetic assembly includes a third magnet and a fourth magnet. The third magnet is arranged on the stator, and the fourth magnet is arranged on the mover.

63. The photographing apparatus of claim 62, wherein, At least one of the third magnet and the fourth magnet is an electromagnet.

64. The photographing apparatus of claim 63, wherein, The third magnet is a permanent magnet, and the fourth magnet is an electromagnet.

65. The photographing apparatus according to any one of claims 62 to 64, wherein The second magnetic assembly includes at least two second magnetic assemblies. One of the second magnetic assemblies is configured to provide an actuating force to the mover in the first direction, and the other second magnetic assembly is configured to provide an actuating force to the mover in the second direction.

66. The photographing apparatus of claim 52, wherein, The detection portion is further included and is configured to detect the distance between the first position and the second position of the mover when the mover is in the second state.

67. The photographing apparatus of claim 66, wherein, The detection portion includes at least two detection members. One of the detection members is configured to detect the position of the mover in the first direction, and the other detection member is configured to detect the displacement of the mover in the second direction.

68. The photographing apparatus according to any one of claims 37 to 39, wherein The supporting portion is further included and is arranged between the mover and the stator. The supporting portion moves relative to the stator when the mover is in the second state.

69. The photographing apparatus of claim 68, wherein, The supporting portion includes: A first gasket arranged on the stator; A second gasket arranged on the mover; and A ball arranged between the first gasket and the second gasket in a rolling manner. At least one of the first gasket and the second gasket forms a receiving groove, and the ball is arranged in the receiving groove in a rolling manner.

70. The photographing apparatus of claim 69, wherein, Further comprising a self-locking portion having a third state in which the self-locking portion is pressed against the second spacer and a fourth state in which the self-locking portion is separated from the second spacer; When the self-locking portion is in the third state, the first spacer and the second spacer are tightly pressed against two opposite sides of the ball to limit the rolling of the ball, so that the mover portion is kept in the first state.

71. The photographing apparatus according to any one of claims 37 to 39, wherein Further comprising a limiting portion having a limiting position; When the mover portion is in the second state and reaches the limiting position, the limiting portion limits the further movement of the mover portion relative to the stator portion.

72. The photographing apparatus of claim 71, wherein, The limiting portion comprises a plurality of limiting members, the limiting members are arranged on the stator portion and are arranged around the mover portion at intervals.

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