Cross talk free shift axis image stabilizer

Abstract

The application discloses a shift-axis anti-shake device without crosstalk, and relates to the technical field of motors.The shift-axis anti-shake device without crosstalk is provided with first and second supporting members, and single-point supporting of a single hemisphere is replaced by line contact or multi-point contact and supporting, so that the first driving member drives the imaging assembly to rotate around the first supporting member, and the second driving member drives the imaging assembly to rotate around the second supporting member, thereby realizing independent anti-shake of each axis, no interference between rotation of the imaging assembly around the X and Y axes, no crosstalk, and good anti-shake effect.

Description

Technical Field

[0001] This invention relates to the field of motor technology, and in particular to a crosstalk-free axis shifting anti-shake device. Background Technology

[0002] With the continuous expansion of the digital camera and smartphone market, the application of camera image stabilization is also increasing. Camera image stabilization can effectively reduce image shake, improve image quality, and thus enhance the user experience. As people's requirements for image quality become higher and higher, the demand for camera image stabilization will continue to grow.

[0003] An existing optical image stabilization device with authorization announcement number CN212569369U changes the original drive coil and magnet drive to an electromagnet drive, that is, replaces the magnet with a soft magnetic sheet. While maintaining the original performance, its width and thickness are reduced. In addition, the cost of the optical image stabilization device is also reduced.

[0004] However, the device has certain problems in use. Its fulcrum structure is a single-point support of a hemispherical shape, and the image stabilization structure is all linked. Therefore, when the camera rotates around the hemispherical support point on one axis, it will cause the thrust output of the other axis to change, and the position of the coil and magnet of the other axis will change. The crosstalk is relatively serious, and the control and debugging are difficult, which will result in poor image stabilization effect. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, the present invention provides a crosstalk-free axis anti-shake device that can achieve independent anti-shake for each axis, with no crosstalk during rotation and good anti-shake effect.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a crosstalk-free tilt-shift image stabilization device, comprising a mounting base, wherein the mounting base is provided with an image stabilization structure, the image stabilization structure comprising a first image stabilization component and a second image stabilization component, wherein the second image stabilization component is provided with an imaging component, the first image stabilization component comprising a first driving component and a first supporting component, the first driving component driving the second image stabilization component and the imaging component to rotate around the first supporting component, the second image stabilization component comprising a second driving component and a second supporting component, wherein the second supporting component and the first supporting component are both parallel to the horizontal plane and their projections on the horizontal plane are perpendicular, and the second driving component driving the imaging component to rotate around the second supporting component.

[0007] Preferably, the imaging component is a mirror or a module.

[0008] Preferably, the first driving component includes a first magnet and a first coil. The bottom of the mounting base is provided with an FPC plate, and the top surface of the FPC plate is provided with a support plate. Several first coils passing through the support plate are symmetrically arranged on both sides of the top surface of the FPC plate. The first support member is in contact with the top surface of the support plate and is located between two first coils. The top of the first support member is connected to a middle plate. The bottom surface of the middle plate is provided with a first magnet. The first magnet is located above the first coil. The line connecting the two first magnets and the line connecting the two first coils are both perpendicular to the projection of the first support member on the top surface of the middle plate.

[0009] Preferably, the second driving component includes a second magnet and a second coil. A plurality of second magnets are symmetrically arranged on both sides of the top surface of the middle plate. The second support is in contact with the top surface of the middle plate and is located between two second magnets. A carrier is provided on the top of the second support, and a second coil is provided on the bottom surface of the carrier. The second coil is located above the second magnets. The line connecting two second magnets and the line connecting two second coils are both perpendicular to the projection of the second support on the top surface of the middle plate. The line connecting two first magnets and the line connecting two first coils are both perpendicular to the projection of the line connecting two second magnets and the line connecting two second coils on the top surface of the middle plate.

[0010] Preferably, the first support member and the support plate, as well as the second support member and the middle plate, are in line contact or multi-point contact.

[0011] Preferably, a number of elastic elements are provided between the support plate and the middle plate, as well as between the middle plate and the carrier.

[0012] Preferably, it also includes a winding plate, wherein a second groove is provided on the bottom surface of the carrier, the second coil is disposed on the winding plate, and the size of the groove opening is not less than the size of the winding plate.

[0013] Preferably, the top and bottom surfaces of the middle plate are provided with a plurality of first grooves, and the size of the groove opening is not less than the size of the first magnet and the second magnet.

[0014] Preferably, the four sidewall centers of the middle plate are respectively provided with a first limiting member and a second limiting member, the first limiting member limiting the rotation angle of the carrier, and the second limiting member limiting the rotation angle of the middle plate.

[0015] Preferably, the middle plate is made of a magnetically conductive material.

[0016] Compared with the prior art, the beneficial effects that this invention can achieve are:

[0017] This invention, by setting a first support member and a second support member, replaces the traditional single-point support of a single hemisphere with line contact or multi-point contact and support. This allows the first drive member to drive the imaging component to rotate around the first support member, and the second drive member to drive the imaging component to rotate around the second support member. This achieves independent image stabilization for each axis, and the imaging components do not interfere with each other or crosstalk when rotating around the X and Y axes, resulting in good image stabilization effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the anti-shake device structure in the first embodiment of the present invention;

[0019] Figure 2 For the present invention Figure 1 Explosion structure diagram;

[0020] Figure 3 This is a schematic diagram of the first support member, the middle plate, and the first groove structure in the first embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the second support member, carrier, and weight reduction groove structure in the first embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the first groove and the middle plate structure in the first embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the explosion structure of the anti-shake device in the second embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of the second support member, carrier, and weight reduction groove structure in the second embodiment of the present invention;

[0025] Figure 8 This is a schematic diagram of the block-shaped first support member, the middle plate, and the first groove structure in the second embodiment of the present invention;

[0026] Figure 9 This is a schematic diagram of the long plate-shaped first support member, the middle plate, and the first groove structure in the second embodiment of the present invention;

[0027] Figure 10 This is a schematic diagram of the structure when the imaging component is a module in the fourth embodiment of the present invention;

[0028] Figure 11 For the present invention Figure 10 Explosion structure diagram;

[0029] Figure 12 This is a schematic diagram of the installation of the first and second limiting members in the fifth embodiment of the present invention;

[0030] Figure 13 This is a schematic diagram of the rotation direction structure of the imaging component of the present invention;

[0031] The components are: 1. Mounting base; 21. Support plate; 22. First coil; 23. First magnet; 24. First support member; 31. Second magnet; 32. Carrier; 33. Second coil; 34. Second support member; 4. Imaging assembly; 5. Middle plate; 6. Elastic member; 7. Winding plate; 8. FPC board; 9. First groove; 10. Weight reduction groove; 11. Outer shell; 12. First limiting member; 13. Second limiting member. Detailed Implementation

[0032] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention is further described below in conjunction with specific embodiments. However, the following embodiments are merely preferred embodiments of this invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of this invention. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods. Unless otherwise specified, the materials and reagents used in the following embodiments can be obtained commercially.

[0033] like Figures 1-9 As shown, the present invention provides a crosstalk-free tilt-shift image stabilization device, including a mounting base 1, an image stabilization structure on the mounting base 1, the image stabilization structure including a first image stabilization component and a second image stabilization component, an imaging component 4 on the second image stabilization component, the imaging component 4 being a reflector or a module, the first image stabilization component including a first driving component and a first supporting component 24, the first driving component driving the second image stabilization component and the imaging component 4 to rotate around the first supporting component 24, the second image stabilization component including a second driving component and a second supporting component 34, the second supporting component 34 and the first supporting component 24 are both parallel to the horizontal plane and their projections on the horizontal plane are perpendicular, the second driving component driving the imaging component 4 to rotate around the second supporting component 34;

[0034] By setting a first support member 24 and a second support member 34, and replacing the traditional single-point support of a single hemisphere with line contact or multi-point contact and support, the first drive member can drive the imaging component 4 to rotate around the first support member 24 and the second drive member can drive the imaging component 4 to rotate around the second support member 34. This achieves independent image stabilization for each axis, and the imaging components 4 do not interfere with each other or crosstalk when rotating around the X and Y axes, resulting in good image stabilization effect.

[0035] In the first to third embodiments described below, the imaging component 4 is described as a reflector (when the imaging component 4 is a reflector, its outer periphery is set as a shell 11, which is not shown in the figure), and the imaging component 4 in the fourth and fifth embodiments is described as a module.

[0036] First Embodiment

[0037] The first support member 24 is located at the bottom of the middle plate 5, and the second support member 34 is located at the bottom of the carrier 32. At this time, the first support member 24 and the top surface of the support plate 21, and the second support member 34 and the top surface of the middle plate 5 are in line contact.

[0038] like Figures 1-5 As shown, the first driving component includes a first magnet 23 and a first coil 22. The bottom of the mounting base 1 is provided with an FPC plate 8, and the top surface of the FPC plate 8 is provided with a support plate 21. Several first coils 22 passing through the support plate 21 (a steel plate can be used here) are symmetrically arranged on both sides of the top surface of the FPC plate 8. The first coils 22 and the support plate 21 do not contact each other. The first support member 24 contacts the top surface of the support plate 21 and is located between two first coils 22. The top of the first support member 24 is connected to a middle plate 5. The bottom surface of the middle plate 5 is provided with a first magnet 23. The first magnet 23 is located above the first coil 22. The line connecting the two first magnets 23 and the line connecting the two first coils 22 are perpendicular to the projection of the first support member 24 on the top surface of the middle plate 5.

[0039] The second driving component includes a second magnet 31 and a second coil 33. Several second magnets 31 are symmetrically arranged on both sides of the top surface of the middle plate 5. The second support member 34 is in contact with the top surface of the middle plate 5 and is located between two second magnets 31. The top of the second support member 34 is provided with a carrier 32, and the bottom surface of the carrier 32 is provided with a second coil 33. The second coil 33 is located above the second magnets 31. The line connecting the two second magnets 31 and the line connecting the two second coils 33 are perpendicular to the projection of the second support member 34 on the top surface of the middle plate 5. The line connecting the two first magnets 23 and the line connecting the two first coils 22 are perpendicular to the projection of the line connecting the two second magnets 31 and the line connecting the two second coils 33 on the top surface of the middle plate 5.

[0040] like Figure 2 and Figure 6 As shown, several elastic elements 6 are provided between the support plate 21 and the middle plate 5, as well as between the middle plate 5 and the carrier 32. By providing elastic elements 6, the middle plate 5 and the carrier 32 are limited to a certain extent, thereby preventing the carrier 32 and the imaging component 4 from moving irregularly under the action of the first driving member and the second driving member when they rotate. Furthermore, when the first coil 22 and the second coil 33 are not energized, the carrier 32 and the imaging component 4 can be reset under the action of the elastic elements 6.

[0041] like Figure 3 and Figure 4 As shown, the first support member 24 and the support plate 21, as well as the second support member 34 and the middle plate 5, are in line contact. Here, we take the first support member 24 and the second support member 34 as arc-shaped support rods as an example for explanation. Preferably, the first support member 24 is located at the center of the bottom surface of the middle plate 5, and the second support member 34 is located at the center of the bottom surface of the carrier 32.

[0042] like Figure 1 , Figure 2 and Figure 13 As shown, when the imaging component 4 needs to rotate around the Y-axis for image stabilization, by energizing each of the first coils 22, according to Ampere's law (i.e., the right-hand rule), the first coils 22 located on both sides of the first support member 24 generate magnetic force. The magnetic force generated by one first coil 22 attracts the corresponding first magnet 23 above it, and the magnetic force generated by the other first coil 22 repels the corresponding first magnet 23 above it, thereby enabling the middle plate 5 (i.e., the second image stabilization component and the imaging component 4) to rotate around the Y-axis;

[0043] Similarly, when the imaging component 4 needs to rotate around the X-axis for image stabilization, by energizing each of the second coils 33, according to Ampere's law (i.e., the right-hand rule), the second coils 33 located on both sides of the bottom surface of the carrier 32 generate magnetic force. The magnetic force generated by one second coil 33 attracts the corresponding second magnet 31 below it, and the magnetic force generated by the other second coil 33 repels the corresponding second magnet 31 below it. At this time, the middle plate 5 will not rotate, and the resulting attractive and repulsive forces enable the carrier 32 and the imaging component 4 to rotate around the X-axis.

[0044] This allows the imaging component 4 to achieve independent image stabilization for each axis, and the imaging components 4 do not interfere with each other or crosstalk when rotating around the X and Y axes, resulting in good image stabilization.

[0045] Alternatively, the first support member 24 and the second support member 34 can be set into an inverted triangle or other shapes, or the first support member 24 can be in line contact with the top surface of the support plate 21 and the second support member 34 can be in line contact with the top surface of the middle plate 5. These will not be elaborated on here.

[0046] The assembly principle of the entire device is as follows: assemble the imaging component 4 and the carrier 32, then assemble the second coil 33 with the winding plate 7, and then assemble the winding plate 7 below the carrier 32 to form a semi-finished winding plate 7 (the circuit of the second coil 33 on the semi-finished winding plate 7 is guided to the elastic member 6 by two winding posts). Assemble the first magnet 23 and the second magnet 31 on the middle plate 5. Assemble the middle plate 5 with the mounting base 1 and the carrier 32 respectively through the elastic member 6 to form a bracket semi-finished product. Assemble the FPC board 8, the support plate 21 and the first coil 22 to form an FPC semi-finished product. Finally, assemble the bracket semi-finished product and the FPC semi-finished product to obtain the finished product.

[0047] Second Embodiment

[0048] The first support member 24 is located at the bottom of the middle plate 5, and the second support member 34 is located at the bottom of the carrier 32. The difference from the first embodiment is that: Figures 6-9 As shown, the first support member 24 and the top surface of the support plate 21, as well as the second support member 34 and the top surface of the middle plate 5, are in multi-point contact.

[0049] The first support member 24 and the second support member 34 here include a long plate and ball bearings or multiple linearly distributed blocks and ball bearings (when there are multiple blocks, the line connecting the blocks of the first support member 24 and the line connecting the blocks of the second support member 34 are perpendicular). Specifically, several bottom grooves are opened on the long plate and several ball bearings are set in the bottom grooves, or a bottom groove is opened at the bottom of each block and several ball bearings are set in the bottom grooves.

[0050] Alternatively, instead of setting up long plates or blocks, bottom grooves can be cut into the carrier 32 and the middle plate 5. The details will not be elaborated further.

[0051] The contact points of multiple balls on the support plate 21 and the middle plate 5 can be connected in a straight line. According to the first embodiment, under the driving action of the first driving member and the second driving member, the imaging component 4 can also achieve independent anti-shake for each axis, and the imaging component 4 does not interfere with each other when rotating around the X-axis and Y-axis, has no crosstalk, and has a good anti-shake effect.

[0052] Third Embodiment

[0053] Unlike the two embodiments above, the first support member 24 can be set on the top surface of the support plate 21 and the second support member 34 can be set on the top surface of the middle plate 5. In this case, the first support member 24 and the bottom surface of the middle plate 5, and the second support member 34 and the bottom surface of the carrier 32 are in line contact or multi-point contact (not shown in the figure).

[0054] The specific principle is the same as in the first embodiment, both under the driving action of the first driving member and the second driving member, which will not be elaborated on here. Therefore, the imaging component 4 can also achieve independent image stabilization for each axis, and the imaging component 4 can rotate around the X-axis and Y-axis without interfering with each other, without crosstalk, and with good image stabilization effect.

[0055] Fourth embodiment

[0056] like Figure 10 and Figure 11 As shown, the imaging component 4 is a module, and the module is surrounded by a shell 11. The first support member 24 and the second support member 34 are both ball bearings. Specifically, several bottom grooves can be opened on the middle plate 5 and the mounting base 1 to place the ball bearings. The specific principle is similar to the first to third embodiments mentioned above, and will not be elaborated here. The module is also provided with a bent PFC, which is connected to the FPC plate 8 below, and plays a role in conducting electricity and partially resetting.

[0057] Fifth embodiment

[0058] like Figure 12As shown, the four side walls of the middle plate 5 are respectively provided with a first limiting member 12 and a second limiting member 13 at their center positions. The first limiting member 12 limits the rotation angle of the carrier 32, and the second limiting member 13 limits the rotation angle of the middle plate 5. The first limiting member 12 and the second limiting member 13 can be separate components fixed to the middle plate 5, or they can be integrally formed with the middle plate 5.

[0059] The first limiting member 12 and the second limiting member 13 here are both limiting buckles and are both set as L-shaped plates. The horizontal end of the L-shaped first limiting member 12 is located above the carrier 32 and does not contact the top surface of the carrier 32. The horizontal end of the L-shaped second limiting member 13 is located below the mounting base 1 and does not contact the mounting base 1.

[0060] like Figure 3 , Figure 5 , Figure 8 and Figure 9 As shown, the top and bottom surfaces of the middle plate 5 are provided with several first grooves 9. The size of the groove opening of the first groove 9 is not less than the size of the first magnet 23 and the second magnet 31. The first groove 9 is used to accommodate the first magnet 23 and the second magnet 31, thereby reducing the overall volume and the weight of the entire device.

[0061] like Figure 2 and Figure 6 As shown, it also includes a winding plate 7. The bottom surface of the carrier 32 has a second groove. The size of the groove is not smaller than the size of the winding plate 7, so that the winding plate 7 and the second coil 33 can be placed in the second groove. The second coil 33 is placed on the winding plate 7. The purpose of the winding plate 7 is that the second coil 33 is directly wound on the winding plate 7 and then assembled with the carrier 32, which is more efficient. It is difficult to directly assemble the second coil 33 and the carrier 32. In particular, the first coil 22 can be placed on the winding plate 7 and then the winding plate 7 is fixed on the FPC board 8. The first coil 22 can also be placed directly on the FPC board 8. Since the FPC board 8 is a plane, it can be directly wound, so the first coil 22 does not need to use the winding plate 7.

[0062] In addition, special cases, such as Figure 4 and Figure 7 As shown, when the imaging component 4 is a reflector, a weight reduction groove 10 is provided on the carrier 32, which can reduce the weight of the carrier 32 and the entire motor.

[0063] like Figure 2 and Figure 6 As shown, the middle plate 5 is made of magnetic material. The magnetic material itself can shield the magnetic field, ensuring that the magnetic fields generated by the two axes during anti-shake will not interfere with each other. It can also attract magnets and is easy to assemble.

[0064] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shift-axis anti-shake device without crosstalk, comprising a mounting seat (1), wherein an anti-shake structure is arranged on the mounting seat (1), characterized in that, The anti-shake structure comprises a first anti-shake component and a second anti-shake component, the second anti-shake component is provided with an imaging assembly (4), the first anti-shake component comprises a first driving member and a first supporting member (24), the first driving member drives the second anti-shake component and the imaging assembly (4) to rotate around the first supporting member (24), the first driving member comprises a first magnet (23) and a first coil (22), the bottom of the mounting seat (1) is provided with an FPC board (8), the top surface of the FPC board (8) is provided with a supporting plate (21), the two sides of the top surface of the FPC board (8) are symmetrically provided with a plurality of first coils (22) penetrating through the supporting plate (21), the first supporting member (24) is in contact with the top surface of the supporting plate (21) and is located between the two first coils (22), the top of the first supporting member (24) is connected with a middle plate (5), the bottom surface of the middle plate (5) is provided with a first magnet (23), the first magnet (23) is located above the first coil (22), and the connecting lines between the two first magnets (23) and the connecting lines between the two first coils (22) are perpendicular to the projection of the first supporting member (24) on the top surface of the middle plate (5); The second anti-shake component comprises a second driving member and a second supporting member (34), the second supporting member (34) and the first supporting member (24) are parallel to a horizontal plane and perpendicular to the projection on the horizontal plane, the second driving member drives the imaging assembly (4) to rotate around the second supporting member (34), the second driving member comprises a second magnet (31) and a second coil (33), the top surface of the middle plate (5) is symmetrically provided with a plurality of second magnets (31), the second supporting member (34) is in contact with the top surface of the middle plate (5) and is located between the two second magnets (31), the top of the second supporting member (34) is provided with a carrier (32), the bottom surface of the carrier (32) is provided with a second coil (33), the second coil (33) is located above the second magnet (31), and the connecting lines between the two second magnets (31) and the connecting lines between the two second coils (33) are perpendicular to the projection of the second supporting member (34) on the top surface of the middle plate (5), and the connecting lines between the two first magnets (23) and the connecting lines between the two first coils (22) are perpendicular to the projection of the connecting lines between the two second magnets (31) and the connecting lines between the two second coils (33) on the top surface of the middle plate (5); The top surface and the bottom surface of the middle plate (5) are provided with a plurality of first grooves (9), and the size of the groove of the first groove (9) is not less than the size of the first magnet (23) and the second magnet (31).

2. The shift-and-stabilize device without cross talk according to claim 1, characterized in that: The imaging assembly (4) is a mirror or a module.

3. The shift-and-stabilize device without cross talk according to claim 1, characterized in that: The first supporting member (24) and the supporting plate (21) and the second supporting member (34) and the middle plate (5) are in linear contact or multi-point contact.

4. The shift-and-stabilize device without cross talk according to claim 1, characterized in that: A plurality of elastic members (6) are arranged between the supporting plate (21) and the middle plate (5) and between the middle plate (5) and the carrier (32).

5. The shift-and-stabilize device without cross talk according to claim 1, characterized in that: Also include the winding board (7), the carrier (32) bottom surface is provided with a second groove, the second coil (33) is arranged on the winding board (7), the size of the second groove is not less than the size of the winding board (7).

6. The shift-and-stabilize device without cross talk according to claim 1, characterized in that: The first limiting piece (12) limits the rotation angle of the carrier (32), and the second limiting piece (13) limits the rotation angle of the middle plate (5).

7. The shift-and-stabilize device without cross talk according to claim 1, characterized in that: The middle plate (5) is a magnetic conductive material.

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