Optical image stabilizing mechanism, camera assembly and electronic equipment

Abstract

The invention provides an optical image stabilizing mechanism which is used for reducing focusing drift of a rotor of a camera assembly relative to a stator, the optical image stabilizing mechanism comprises a first anti-vibration mechanism and a second anti-vibration mechanism, the first anti-vibration mechanism is arranged on the X axis of the rotor, and the second anti-vibration mechanism is arranged on the X axis of the rotor. The first anti-vibration mechanism comprises a first magnet set, a first coil set and a first electromagnetic sensing piece, the first magnet set is arranged on the first side of the rotor, the first coil set and the electromagnetic sensing piece are arranged on the first side of the stator, and the first magnet set directly faces the first electromagnetic sensing piece and the first coil set; the second anti-vibration mechanism is arranged on the Y axis of the rotor and comprises a second magnet set, a second coil set and a second electromagnetic sensing piece, the second magnet set is arranged on the second side of the rotor, the second coil set and the second electromagnetic sensing piece are arranged on the second side of the stator, and the second magnet set directly faces the second coil set and the second electromagnetic sensing piece. The invention further provides a camera assembly provided with the optical image stabilizing mechanism and electronic equipment.

Description

Technical Field

[0001] The present invention relates to the field of optical image stabilization devices, and in particular to an optical image stabilization mechanism, a camera assembly provided with the optical image stabilization mechanism, and an electronic device provided with the camera assembly. Background Art

[0002] Mobile terminals such as mobile phones or tablets are equipped with cameras. Some cameras use a dual-coil low-leakage design for X-axis and Y-axis anti-shake. In related technologies, optical image stabilization or digital image stabilization is generally used to prevent the camera's mover from flipping relative to the stator. The optical image stabilization offsets external vibrations by moving the built-in lens or sensing element to keep the picture stable. The position arrangement of the sensing element of the optical image stabilization in some technologies is placed horizontally in the coil. However, the horizontal placement of the sensing element inside the coil will cause deviation or instability in the autofocus system when trying to maintain focus, resulting in the focus not being able to accurately track when the position of the subject in the picture changes, thereby affecting the clarity of the image. Summary of the invention

[0003] The object of the present invention is to provide an optical image stabilization mechanism for reducing the drift of auto focus, a camera assembly provided with the optical image stabilization mechanism, and an electronic device provided with the camera assembly.

[0004] In order to solve the above technical problems, the present invention provides an optical image stabilization mechanism for reducing the focus drift of a mover of a camera assembly relative to a stator, the optical image stabilization mechanism comprising a first anti-vibration mechanism and a second anti-vibration mechanism, the first anti-vibration mechanism being arranged on the X-axis of the mover, the first anti-vibration mechanism comprising a first magnet group, a first coil group and a first electromagnetic sensing element, the first magnet group being arranged on a first side of the mover, the first coil group and the electromagnetic sensing element being arranged on a first side of the stator, the first magnet group being opposite to the first electromagnetic sensing element and the first coil group; the second anti-vibration mechanism being arranged on the Y-axis of the mover, the second anti-vibration mechanism comprising a second magnet group, a second coil group and a second electromagnetic sensing element, the second magnet group being arranged on a second side of the mover, the second coil group and the second electromagnetic sensing element being arranged on a second side of the stator, the second magnet group being opposite to the second coil group and the second electromagnetic sensing element.

[0005] The present invention also provides a camera assembly, which includes a stator, a mover arranged in the stator, a lens arranged on the mover, and an optical image stabilization mechanism; the optical image stabilization mechanism is used to reduce the focus drift of the mover of the camera assembly relative to the stator, and the optical image stabilization mechanism includes a first anti-vibration mechanism and a second anti-vibration mechanism, the first anti-vibration mechanism is arranged on the X-axis of the mover, the first anti-vibration mechanism includes a first magnet group, a first coil group and a first electromagnetic sensing element, the first magnet group is arranged on the first side of the mover, the first coil group and the electromagnetic sensing element are arranged on the first side of the stator, and the first magnet group is opposite to the first electromagnetic sensing element and the first coil group; the second anti-vibration mechanism is arranged on the Y-axis of the mover, the second anti-vibration mechanism includes a second magnet group, a second coil group and a second electromagnetic sensing element, the second magnet group is arranged on the second side of the mover, the second coil group and the second electromagnetic sensing element are arranged on the second side of the stator, and the second magnet group is opposite to the second coil group and the second electromagnetic sensing element.

[0006] The present invention also provides an electronic device, which includes a housing, a mainboard arranged in the housing, and a camera assembly, wherein the camera assembly includes a stator, a mover arranged in the stator, a lens arranged on the mover, and an optical image stabilization mechanism; the optical image stabilization mechanism is used to reduce the focus drift of the mover of the camera assembly relative to the stator, and the optical image stabilization mechanism includes a first anti-vibration mechanism and a second anti-vibration mechanism, the first anti-vibration mechanism is arranged on the X-axis of the mover, the first anti-vibration mechanism includes a first magnet group, a first coil group and a first electromagnetic sensing element, the first magnet group is arranged on a first side of the mover, and the second anti-vibration mechanism includes a first anti-vibration mechanism and a second anti-vibration mechanism. The first coil group and the electromagnetic sensing element are arranged on the first side of the stator, and the first magnet group is opposite to the first electromagnetic sensing element and the first coil group; the second vibration isolation mechanism is arranged on the Y-axis of the mover, and the second vibration isolation mechanism includes a second magnet group, a second coil group and a second electromagnetic sensing element, the second magnet group is arranged on the second side of the mover, the second coil group and the second electromagnetic sensing element are arranged on the second side of the stator, and the second magnet group is opposite to the second coil group and the second electromagnetic sensing element; the camera assembly is arranged in the housing, and the camera assembly is electrically connected to the mainboard.

[0007] The first magnet group of the camera assembly provided by the present invention is arranged on the first side of the mover, the second magnet group is arranged on the second side of the mover, the first coil assembly and the first electromagnetic sensing element are arranged on the first side of the stator, and the second coil assembly and the second electromagnetic sensing element are arranged on the second side of the stator; the first magnet group is opposite to the first coil assembly and the first electromagnetic sensing element, and the second magnet group is opposite to the second coil assembly and the second electromagnetic sensing element; the first anti-vibration mechanism and the second anti-vibration mechanism can reduce the rotation of the mover relative to the stator around the X-axis or Y-axis, so as to reduce the deviation or instability of the automatic focusing system of the camera assembly when trying to maintain the focus, so that when the position of the subject in the picture changes, the focus can be accurately tracked, thereby improving the clarity of the imaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings required for use in the implementation mode will be briefly introduced below. Obviously, the drawings described below are some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0009] Figure 1 is a schematic diagram of the three-dimensional structure of a camera assembly provided by the first embodiment of the present invention;

[0010] Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure decomposition of the camera assembly in FIG.

[0011] Figure 3 yes Figure 2 A further schematic diagram of the three-dimensional structure decomposition of the camera assembly in FIG.

[0012] Figure 4 yes Figure 2 A schematic diagram of a three-dimensional structure breakdown of an optical image stabilization mechanism of a camera assembly;

[0013] Figure 5 yes Figure 4 A schematic diagram of a further three-dimensional structural decomposition of the optical image stabilization mechanism;

[0014] Figure 6 yes Figure 4 A schematic diagram of a three-dimensional structure of the optical image stabilization mechanism from another perspective;

[0015] Figure 7 yes Figure 6 A schematic diagram of a further three-dimensional structural decomposition of the optical image stabilization mechanism;

[0016] Figure 8 yes Figure 2 A perspective cutaway view of an optical image stabilization mechanism and housing;

[0017] Fig. 9 yes Figure 2 A schematic diagram of the magnetic field line distribution of one of the stabilization mechanisms of the optical image stabilization mechanism;

[0018] Fig.10 yes Figure 2 A schematic diagram of magnetic field line distribution of another stabilizing mechanism of the optical image stabilizing mechanism;

[0019] Fig.11 yes Figure 2 A schematic structural diagram of one coil group of the optical image stabilization mechanism;

[0020] Fig.12 It is an analysis diagram of the drift phenomenon of the auto focus of the optical image stabilization mechanism in the prior art;

[0021] Fig.13 is an analysis diagram of the drift phenomenon of the autofocus of the optical image stabilization mechanism of the present application;

[0022] Fig.14 is a schematic diagram of the three-dimensional structure of an optical image stabilization mechanism provided by a second embodiment of the present invention;

[0023] Fig.15 is a schematic diagram of the three-dimensional structure of an optical image stabilization mechanism provided by a third embodiment of the present invention;

[0024] Fig.16 It is a schematic diagram of the three-dimensional structure of an electronic device provided by one embodiment of the present invention.

[0025] Explanation of main reference numerals: 100, camera assembly; 20, stator; 202, installation space; 21, cover body; 212, cover plate; 214, connecting tube; 216, connecting hole; 31, supporting ball; 33, connecting ball; 40, mover; 50, lens; 51, housing; 52, light hole; 60, optical image stabilization mechanism; 62, first anti-vibration mechanism; 620, first magnet group; 621, first electromagnetic sensor; 622, first magnet; 623, second electromagnetic sensor; 624, first isolation block; 625, first coil group; 6250, first rectangular coil; 6252, first inner cavity; 626, first positioning frame; 6261, first positioning sheet; 6263, first ear; 6265, first avoidance; 64, second anti-vibration mechanism; 640, second magnet group; 64 1. third electromagnetic sensor; 642. second magnet; 644. second isolation block; 645. second coil group; 6450. second rectangular coil; 6452. second inner cavity; 646. second positioning frame; 6461. second positioning piece; 6463. second ear; 6465. second avoidance; 65. third anti-vibration mechanism; 650. third magnet group; 652. third magnet; 654. third isolation block; 655. third coil group; 6552. third inner cavity; 656. fourth electromagnetic sensor; 657. third positioning frame; 6571. third positioning piece; 6573. third ear; 70. base; 71. seat; 73. circuit board; 75. image sensor; 76. flexible circuit board; 78. connector; 400. housing; 500. main board; 600. display screen. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In addition, the following descriptions of the various embodiments are made with reference to the attached drawings to illustrate specific embodiments that the present application may be implemented in. Directional terms mentioned in the present application, such as "upper", "lower", "front", "back", "left", "right", "inner", "outer", "side", etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the present application, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0028] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set on..." should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0029] See also Figures 1 to 3 The camera assembly 100 provided in the first embodiment of the present invention includes a stator 20, a cover body 21 mounted on the stator 20, a mover 40 disposed in the stator 20, a lens 50 disposed on the mover 40, and an optical image stabilization mechanism 60. The optical image stabilization mechanism 60 is disposed between the stator 20 and the mover 40. The optical image stabilization mechanism 60 is used to reduce the focus drift of the mover 40 relative to the stator 20, that is, to reduce the movement of the mover 40 relative to the mover 40 in the X-axis direction and the Y-axis direction. The optical image stabilization mechanism 60 includes a first anti-vibration mechanism 62, a second anti-vibration mechanism 64 and a third anti-vibration mechanism 65. The camera assembly 100 is placed on a plane surrounded by an X-axis and a Y-axis. The first anti-vibration mechanism 62 is arranged on the X-axis of the camera assembly 100, the second anti-vibration mechanism 64 is arranged on the Y-axis of the camera assembly 100, the third anti-vibration mechanism 65 and the second anti-vibration mechanism 64 are arranged on the Y-axis at intervals with each other, and the mover 40 is located between the second anti-vibration mechanism 64 and the third anti-vibration mechanism 65; the X-axis direction of the mover 40 is consistent with the X-axis direction of the camera assembly 100, and the Y-axis direction of the mover 40 is consistent with the Y-axis direction of the camera assembly 100. The first vibration-proof mechanism 62 includes a first magnet group 620, a first coil group 625 and a first electromagnetic sensor. The first magnet group 620 is arranged on a first side of the mover 40, the first coil group 625 and the first electromagnetic sensor are arranged on a first side of the stator 20, and the first magnet group 620 is opposite to the first electromagnetic sensor and the first coil group 625 in the X-axis direction. The second vibration-proof mechanism 64 includes a second magnet group 640, a second coil group 645 and a second electromagnetic sensor. The second magnet group 640 is arranged on a second side of the mover 40, and the second coil group 625 and the first electromagnetic sensor are arranged on a first side of the stator 20. The coil group 645 and the second electromagnetic sensor are arranged on the second side of the stator 20, and the second magnet group 640 faces the second coil group 645 and the second electromagnetic sensor in the Y-axis direction; the third vibration-proof mechanism 65 includes a third magnet group 650, a third coil group 655 and a third electromagnetic sensor, the third magnet group 650 is arranged on the third side of the mover 40, the third coil group 655 and the third electromagnetic sensor are arranged on the third side of the stator 20, and the third magnet group 650 faces the third coil group 655 and the third electromagnetic sensor in the Y-axis direction. The second side faces the third side in the Y-axis direction, and the first side is located between the second side and the third side.

[0030] The first magnet group 620 of the camera assembly 100 provided by the present invention is arranged on the first side of the mover 40, the second magnet group 640 is arranged on the second side of the mover 40, the first coil assembly 625 and the first electromagnetic sensing element are arranged on the first side of the stator 20, and the second coil assembly 645 and the second electromagnetic sensing element are arranged on the second side of the stator 20; the first magnet group 620 is opposite to the first coil assembly 625 and the first electromagnetic sensing element, and the second magnet group 640 is opposite to the second coil assembly 645 and the second electromagnetic sensing element; the first anti-vibration mechanism 62 and the second anti-vibration mechanism 64 can reduce the rotation of the mover 40 relative to the stator 20 around the X-axis or Y-axis, so as to reduce the deviation or instability of the automatic focusing system of the camera assembly 100 when trying to maintain the focus, so that when the position of the subject in the picture changes, the focus can be accurately tracked, thereby improving the clarity of the imaging.

[0031] like Figure 2 and Figure 3 As shown, the cover body 21 includes a cover plate 212 and a connecting tube 214 connected to the periphery of the cover plate 212. A connecting hole 216 is provided in the middle of the cover plate 212 along the optical axis L of the lens 50. The cover plate 212 and the connecting tube 214 enclose a receiving space. The connecting hole 216 communicates with the receiving space, and the stator 20 is accommodated in the receiving space. An installation space 202 is provided in the middle of the stator 20 along the optical axis L of the lens 50. The opposite ends of the installation space 202 pass through the top surface and the bottom surface of the stator 20 respectively, and the installation space 202 is directly opposite to and communicates with the connecting hole 216. In this embodiment, the cover plate 212 is rectangular, the connecting tube 214 is a rectangular tube, and the connecting hole 216 is a circular hole passing through the cover body 21. In other embodiments, the cover plate 212 may also be, but not limited to, a circular plate, a polygonal plate, or an elliptical plate, and the connecting tube 214 may also be, but not limited to, a circular tube, a polygonal tube, or an elliptical tube, and the like. It can be understood that the camera assembly 100 is placed on a plane surrounded by the X-axis and the Y-axis, and the optical axis L of the lens 50 is parallel to the Z-axis.

[0032] The camera assembly 100 further includes a base 70, a cover 21 and a stator 20 are disposed on the front of the base 70, and the lens 50 includes a housing 51 and a lens module disposed in the housing 51, and a light hole 52 is disposed on the front of the housing 51 along the optical axis L, and the axis of the lens module in the housing 51 is colinear with the optical axis L, and the housing 51 is accommodated in the installation space 202. The front side in the present invention refers to the side facing the object side of the camera assembly 100, and the back side refers to the side away from the object side of the camera assembly 100.

[0033] The base 70 includes a base body 71, a circuit board 73 disposed in the base body 71, and an image sensor 75 disposed on the front of the base body 71. The circuit board 73 is electrically connected to the image sensor 75. The circuit board 73 is provided with a driving chip, an output interface, etc. The circuit board 73 is connected to a connector 78 through a flexible circuit board 76. The connector 78 is used to connect to an external power output terminal. The camera assembly 100 also includes three support balls 31 and two rows of connecting balls 33. The three support balls 31 are respectively arranged at the middle triangle of the base body 71. Specifically, two of the support balls 31 are respectively located at the opposite ends of the first anti-vibration mechanism 62, and the other support ball 31 is located at one end of the second anti-vibration mechanism 64 away from the first anti-vibration mechanism 62. The three support balls 31 are used to support the mover 40. The two rows of connecting balls 33 are respectively arranged at the opposite ends of the third anti-vibration mechanism 65, and the two rows of connecting balls 33 are connected between the mover 40 and the stator 20.

[0034] like Figure 3-Figure 7 As shown, the first coil group 625 includes two first rectangular coils 6250 spaced apart from each other, the length direction of the first rectangular coils 6250 is parallel to the Y-axis direction, and the two first rectangular coils 6250 are arranged along their length direction, that is, the two first rectangular coils 6250 are spaced apart along the Y-axis direction, and the middle part of the first rectangular coil 6250 has a rectangular first inner cavity 6252, and the length direction of the first inner cavity 6252 is parallel to the length direction of the first rectangular coil 6250; the first electromagnetic sensor on the first vibration prevention mechanism 62 includes a first electromagnetic sensor 621 and a second electromagnetic sensor 623, the first electromagnetic sensor 621 is arranged between the two first rectangular coils 6250, and the second electromagnetic sensor 623 is arranged The inner cavity 2652 of one of the two first rectangular coils 6250; the second coil group 645 includes two second rectangular coils 6450 spaced apart from each other, the length direction of the second rectangular coil 6450 is parallel to the X-axis direction, and the two second rectangular coils 6450 are arranged along their length direction, that is, the two second rectangular coils 6450 are spaced apart along the X-axis direction; the middle part of the second rectangular coil 6450 has a rectangular second inner cavity 6452, the length direction of the second inner cavity 6452 is parallel to the length direction of the second rectangular coil 6450, and the second electromagnetic sensing element on the second vibration isolation mechanism 64 includes a third electromagnetic sensor 641, and the third electromagnetic sensor 641 is arranged between the two second rectangular coils 6450.

[0035] The third coil group 655 is a third rectangular coil, the length direction of the third rectangular coil is parallel to the X-axis direction, the middle part of the third rectangular coil has a rectangular third inner cavity 6552, the length direction of the third inner cavity 6552 is parallel to the length direction of the third rectangular coil. The third electromagnetic sensor includes two fourth electromagnetic sensors 656 spaced apart from each other, both of which are accommodated in the third inner cavity 6552, one of the fourth electromagnetic sensors 656 is close to the middle part of the third inner cavity 6552, and the other fourth electromagnetic sensor 656 is located at one end of the third inner cavity 6552. In this embodiment, the other fourth electromagnetic sensor 656 is located at one end of the third inner cavity 6552 away from the first anti-vibration mechanism 62.

[0036] In this embodiment, the first electromagnetic sensor 621 is disposed between the two first rectangular coils 6250 , the second electromagnetic sensor 623 is disposed in the first inner cavity 6252 of the first rectangular coil 6250 away from one end of the second vibration isolation mechanism 64 , and the third electromagnetic sensor 641 is disposed between the two second rectangular coils 6450 .

[0037] In other embodiments, the first electromagnetic sensor 621 is disposed between the two first rectangular coils 6250 , the second electromagnetic sensor 623 is disposed in the first inner cavity 6252 of the first rectangular coil 6250 near one end of the second anti-vibration mechanism 64 , and the third electromagnetic sensor 641 is disposed between the two second rectangular coils 6450 .

[0038] Optionally, the first electromagnetic sensor 621, the second electromagnetic sensor 623 and the third electromagnetic sensor 641 are all rectangular, the length direction of the first electromagnetic sensor 621 is perpendicular to the length direction of the first rectangular coil 6250, that is, the length direction of the first electromagnetic sensor 621 is parallel to the Z axis; the length direction of the second electromagnetic sensor 623 is parallel to the length direction of the first rectangular coil 6250, that is, the length direction of the second electromagnetic sensor 623 is parallel to the Y axis; the length direction of the third electromagnetic sensor 641 is perpendicular to the length direction of the second rectangular coil 6450, that is, the length direction of the third electromagnetic sensor 641 is parallel to the X axis. Optionally, the length of the first electromagnetic sensor 621 is equal to or less than the width of the first rectangular coil 6250, the length of the first electromagnetic sensor 621 is less than or equal to the length of the first inner cavity 6252, the width of the first electromagnetic sensor 621 is less than or equal to the width of the first inner cavity 6252, and the length of the third electromagnetic sensor 641 is less than or equal to the width of the second rectangular coil 6450. In this embodiment, the first electromagnetic sensor 621 , the second electromagnetic sensor 623 , and the third electromagnetic sensor 641 are all Hall sensors.

[0039] Optionally, the first magnet group 620 includes two first magnets 622 spaced apart from each other, the two first magnets 622 are arranged along the Y-axis direction, and the two first rectangular coils 6250 are respectively opposite to the two first magnets 622; the second magnet group 640 includes two second magnets 642 spaced apart from each other, the two second magnets 642 are arranged along the X-axis direction, and the two second rectangular coils 6450 are respectively opposite to the two second magnets 642. In this embodiment, the first magnet 622 is a rectangular magnet, the length direction of which is parallel to the Y-axis direction, and the two rectangular magnets are spaced apart along the length direction; the second magnet 642 is a rectangular magnet, the length direction of which is parallel to the X-axis direction, and the two rectangular magnets are spaced apart along the length direction.

[0040] The third magnet group 650 includes two third magnets 652 spaced apart from each other, the two third magnets 652 are arranged along the Z-axis direction, and the opposite sides of the third rectangular coil in the length direction are respectively opposite to the two third magnets 652. In this embodiment, the third magnet 652 is a rectangular magnet, the length direction of the third magnet 652 is parallel to the X-axis direction, and the two third magnets 652 are spaced apart along the width direction thereof.

[0041] Optionally, the polarity of one of the first magnets 622 facing the corresponding first rectangular coil 6250 is opposite to the polarity of another first magnet 622 facing the other first rectangular coil 6250; the polarity of one of the second magnets 642 facing the corresponding second rectangular coil 6450 is opposite to the polarity of another second magnet 642 facing the other second rectangular coil 6450; the polarity of one of the third magnets 652 facing the third rectangular coil is opposite to the polarity of another third magnet 652 facing the third rectangular coil. It can be understood that if one of the first magnets 622 faces the corresponding first rectangular coil 6250 as an N pole, the other first magnet 622 faces the other first rectangular coil 6250 as an S pole; if one of the second magnets 642 faces the corresponding second rectangular coil 6450 as an N pole, the other second magnet 642 faces the other second rectangular coil 6450 as an S pole; if one of the third magnets 652 faces the third rectangular coil as an N pole, the other third magnet 652 faces the third rectangular coil as an S pole.

[0042] In this embodiment, the first magnet 622 near one end of the second vibration-proof mechanism 64 has an S pole on the side facing the corresponding first rectangular coil 6250, and the other side of the first magnet 622 facing away from the first rectangular coil 6250 is an N pole; the first magnet 622 far from one end of the second vibration-proof mechanism 64 has an N pole on the side facing the corresponding first rectangular coil 6250, and the other side of the first magnet 622 facing away from the first rectangular coil 6250 is an S pole; the second magnet 642 near one end of the first vibration-proof mechanism 62 has an N pole on the side facing the corresponding second rectangular coil 6450, and the second magnet 642 has an N pole on the side facing the corresponding second rectangular coil 6450. The other side away from the second rectangular coil 6450 is the S pole; the side of the second magnet 642 away from one end of the first vibration isolation mechanism 62 facing the corresponding second rectangular coil 6450 is the S pole, and the other side of the second magnet 642 away from the second rectangular coil 6450 is the N pole; the side of the third magnet 652 close to the base 70 facing the third rectangular coil is the S pole, and the other side of the third magnet 652 away from the third rectangular coil is the N pole; the side of the third magnet 652 away from the base 70 facing the third rectangular coil is the N pole, and the side of the third magnet 652 away from the third rectangular coil is the S pole.

[0043] In other embodiments, the first magnet 622 near one end of the second vibration-proof mechanism 64 has an N-pole on the side facing the corresponding first rectangular coil 6250, and the other side of the first magnet 622 facing away from the first rectangular coil 6250 is an S-pole; the first magnet 622 far from one end of the second vibration-proof mechanism 64 has an S-pole on the side facing the corresponding first rectangular coil 6250, and the other side of the first magnet 622 facing away from the first rectangular coil 6250 is an N-pole; the second magnet 642 near one end of the first vibration-proof mechanism 62 has an S-pole on the side facing the corresponding second rectangular coil 6450, and the second magnet 64 The other side facing away from the second rectangular coil 6450 is an N pole; the side of the second magnet 642 far away from one end of the first vibration-proof mechanism 62 facing the corresponding second rectangular coil 6450 is an N pole, and the other side of the second magnet 642 facing away from the second rectangular coil 6450 is an S pole; the side of the third magnet 652 close to the base 70 facing the third rectangular coil is an N pole, and the other side of the third magnet 652 facing away from the third rectangular coil is an S pole; the side of the third magnet 652 far away from the base 70 facing the third rectangular coil is an S pole, and the side of the third magnet 652 facing away from the third rectangular coil is an N pole.

[0044] Optionally, the first magnet group 620 further includes a first isolation block 624, the first isolation block 624 is located between the two first magnets 622, and the first electromagnetic sensor 621 is directly opposite to the first isolation block 624; in this embodiment, the first isolation block 624 is a rectangular block, and the length direction of the first isolation block 624 is parallel to the width direction of the first magnet 622, that is, the length direction of the first isolation block 624 is parallel to the Z-axis direction. The second magnet group 640 further includes a second isolation block 644, the second isolation block 644 is located between the two second magnets 642, and the third electromagnetic sensor 641 is directly opposite to the second isolation block 644; in this embodiment, the second isolation block 644 is a rectangular block, and the length direction of the second isolation block 644 is parallel to the width direction of the second magnet 642, that is, the length direction of the second isolation block 644 is parallel to the Z-axis direction. The third magnet group 650 also includes a third isolation block 654, which is located between the two third magnets 652, and the two fourth electromagnetic sensors 656 are opposite to the third isolation block 654; in this embodiment, the third isolation block 654 is a rectangular block, and the length direction of the third isolation block 654 is parallel to the length direction of the third magnet 652, that is, the length direction of the third isolation block 654 is parallel to the X-axis direction.

[0045] Optionally, the first anti-vibration mechanism 62 further includes a first positioning frame 626 connected to the mover 40, and the two first magnets 622 are positioned in the first positioning frame 626; specifically, the first positioning frame 626 includes a rectangular first positioning piece 6261 and two first ears 6263, the first positioning piece 6261 is positioned in the mover 40, the two first ears 6263 are respectively connected to the opposite ends of one side of the first positioning piece 6261, the two first ears 6263 and the first positioning piece 6261 surround a first positioning space, and the first magnet group 620 is positioned in the first positioning space. A first avoidance opening 6265 is provided in the middle of one side of the first positioning piece 6261 on which the first ear 6263 is provided, and the first avoidance opening 6265 facilitates the first magnet group 620 to be installed or separated from the first positioning frame 626. The second anti-vibration mechanism 64 includes a second positioning frame 646 connected to the mover 40, and two second magnets 642 are positioned in the second positioning frame 646; specifically, the second positioning frame 646 includes a rectangular second positioning piece 6461 and two second ears 6463, the second positioning piece 6461 is positioned on the mover 40, and the two second ears 6463 are respectively connected to the opposite ends of one side of the second positioning piece 6461, and the two second ears 6463 and the second positioning piece 6461 surround a second positioning space, and the second magnet group 640 is positioned in the second positioning space. The second positioning piece 6461 is provided with a second avoidance opening 6465 in the middle of one side of the second ear 6463, and the second avoidance opening 6465 facilitates the installation or separation of the second magnet group 640 from the second positioning frame 646. The third anti-vibration mechanism 65 also includes a third positioning frame 657 connected to the mover 40, and two third magnets 652 are positioned in the third positioning frame 657; specifically, the third positioning frame 657 includes a rectangular third positioning piece 6571 and a third ear 6573, the third positioning piece 6571 is positioned on the mover 40, the third ear 6573 is connected to the middle part of one side of the third positioning piece 6571, the third positioning piece 6571 and the third ear 6573 enclose a third positioning space, and the third magnet group 650 is positioned in the third positioning space.

[0046] Optionally, the first electromagnetic sensor 621, the second electromagnetic sensor 623 and the first coil group 625 of the first vibration isolation mechanism 62 are positioned on the stator 20 through a first connecting member; the third electromagnetic sensor 641 and the second coil group 645 of the second vibration isolation mechanism 64 are positioned on the stator 20 through a second connecting member; the third coil group 655 and the two fourth electromagnetic sensors 656 of the third vibration isolation mechanism 65 are positioned on the stator 20 through a third connecting member 658.

[0047] like Figure 1-Figure 8As shown, when assembling the camera assembly 100, the first isolation block 624 is placed between the two first magnets 622, and the first isolation block 624 and the two first magnets 622 are positioned in the first positioning frame 626, and then the first positioning frame 626 is installed to the first side of the mover 40; the second isolation block 644 is placed between the two second magnets 642, and the second isolation block 644 and the two second magnets 642 are positioned in the second positioning frame 646, and then the second positioning frame 646 is installed to the second side of the mover 40; the third isolation block 654 is placed between the two third magnets 652, and the third isolation block 654 and the two third magnets 652 are positioned in the third positioning frame 657, and then the third positioning frame 657 is installed to the third side of the mover 40, and the third positioning frame 657 is opposite to the second positioning frame 646; the first electromagnetic The sensor 621 is placed between the two first rectangular coils 6250, the second electromagnetic sensor 623 is placed in the inner cavity 6252 of one of the first rectangular coils 6250, and the first electromagnetic sensor 621, the second electromagnetic sensor 623 and the two first rectangular coils 6250 are positioned on the first side of the stator 20 through the first connecting piece; the third electromagnetic sensor 641 is placed between the two second rectangular coils 6450, and the third electromagnetic sensor 641 and the two second rectangular coils 6450 are positioned on the second side of the stator 20 through the second connecting piece; the two fourth electromagnetic sensors 656 are respectively accommodated in the inner cavity of the third coil group 655, and the two fourth electromagnetic sensors and the third coil group 655 are positioned on the stator 20 through the third connecting piece 658, so that the second anti-vibration mechanism 64 is directly opposite to the third anti-vibration mechanism 65. The stator 20 and the cover body 21 are positioned on the front side of the base 70 so that the lens 50 is accommodated in the installation space 202 of the stator 20, so that the two first rectangular coils 6250 are respectively facing the two first magnets 622, the first electromagnetic sensor 621 is placed vertically and faces the first isolation block 624, the second electromagnetic sensor 623 is placed horizontally in the inner cavity 6252 of one of the first rectangular coils 6250, and the second electromagnetic sensor 623 faces one of the first magnets 622; the two second rectangular coils 6450 are respectively facing the two second magnets 642, and the third electromagnetic sensor 641 is placed vertically and faces the second isolation block 644.

[0048] like Figure 9-13As shown, the optical image stabilization mechanism 60 of the camera assembly 100 of the present application can enable the single-layer ball optical anti-vibration motor to suppress the lens 50 and the carrier of the lens 50 from rolling or tumbling on the plane surrounded by the X-axis and the Y-axis, and can obtain a lower autofocus drift and coil magnet electromagnetic interference level. Specifically, the first anti-vibration mechanism 62 and the second anti-vibration mechanism 64 both adopt a double rectangular coil low leakage magnetic design, the length direction of the first electromagnetic sensor 621 is parallel to the Z axis and is located between the two first rectangular coils 6250, the length direction of the third electromagnetic sensor 641 is parallel to the Z axis and is located between the two second rectangular coils 6450, and the length direction of the second electromagnetic sensor 623 is parallel to the Y axis and is placed in the inner cavity of one of the first rectangular coils 2650, or the length direction of the second electromagnetic sensor 623 is parallel to the X axis and is placed in the inner cavity of one of the second rectangular coils 6450, the first electromagnetic sensor 621 is used to detect the displacement of the first magnet group 620 in the Y axis direction, the second electromagnetic sensor 623 is used to detect the displacement of the first magnet group 620 in the X axis direction, and the third electromagnetic sensor 641 is used to detect the displacement of the second magnet group 640 in the X axis direction, and the algorithm is used to suppress the rotation of the lens relative to the base 70; Fig. 9 As shown, the first magnet group 620. It can be understood that in order to prevent the lens 50 from rotating relative to the base 70, the first electromagnetic sensor 621 of the first anti-vibration mechanism 62 senses the change in magnetic field strength to detect the displacement in the Y-axis direction, the second electromagnetic sensor 623 can sense the change in magnetic field strength to detect the displacement in the X-axis direction; the third electromagnetic sensor 641 can sense the change in magnetic field strength to detect the displacement in the X-axis direction, that is, the change in the distance between the mover 40 and the surfaces of the first electromagnetic sensor 621, the second electromagnetic sensor 623 and the third electromagnetic sensor 641 is detected accordingly. When the lens 50 rotates, the distances sensed by the first electromagnetic sensor 621, the second electromagnetic sensor 623 and the third electromagnetic sensor 641 are differentially guided. At this time, the algorithm can be controlled to make the first electromagnetic sensor 621 and the second electromagnetic sensor 623 consistent with the distances of the two first magnets 622 relative to the first electromagnetic sensor 621 and the second electromagnetic sensor 623 through closed-loop control, thereby correcting the rotation of the lens 50. Therefore, the electromagnetic sensor of the camera assembly 100 of the present application suppresses the rotation of the lens 50 and its carrier through an algorithm, and can obtain a lower autofocus drift and coil magnet electromagnetic interference level.

[0049] See also Fig.14The structure of the optical image stabilization mechanism 60a of the second embodiment of the present application is similar to that of the optical image stabilization mechanism 60 of the first embodiment, except that: the second electromagnetic sensor 623 in the second embodiment is arranged at a different position from that in the first embodiment; specifically, the first coil group 625 includes two first rectangular coils 6250 spaced apart from each other, the length direction of the first rectangular coils 6250 is parallel to the Y-axis direction, and the two first rectangular coils 6250 are spaced apart along the length direction thereof; the electromagnetic sensing element on the first anti-vibration mechanism 62 only includes the first electromagnetic sensor 6 21, the first electromagnetic sensor 621 is arranged between the two first rectangular coils 6250; the second coil group 645 includes two second rectangular coils 6450 spaced apart from each other, the length direction of the second rectangular coils 6450 is parallel to the X-axis direction, and the two second rectangular coils 6450 are arranged along the length direction thereof; the electromagnetic sensing element on the second vibration isolation mechanism 64 includes a second electromagnetic sensor 623 and a third electromagnetic sensor 641, the third electromagnetic sensor 641 is arranged between the two second rectangular coils 6450, and the second electromagnetic sensor 623 is arranged in the inner cavity 6452 of one of the two second rectangular coils 6450.

[0050] Optionally, the first electromagnetic sensor 621, the second electromagnetic sensor 623 and the third electromagnetic sensor 641 are all rectangular, the length direction of the first electromagnetic sensor 621 is perpendicular to the length direction of the first rectangular coil 6250, the second electromagnetic sensor 623 is accommodated in the inner cavity 6452 of the second rectangular coil 6450 close to the first vibration isolation mechanism 62, the length direction of the second electromagnetic sensor 623 is parallel to the length direction of the second rectangular coil 6450, and the length direction of the third electromagnetic sensor 641 is perpendicular to the length direction of the second rectangular coil 6450.

[0051] The role and function of the optical image stabilization mechanism 60 a in the second embodiment of the present application are the same as those of the optical image stabilization mechanism 60 in the first embodiment, and are not described in detail herein.

[0052] See also Fig.15The structure of the optical image stabilization mechanism 60b of the third embodiment of the present application is similar to that of the optical image stabilization mechanism 60 of the first embodiment, except that: the setting position of the second electromagnetic sensor 623 in the third embodiment is different from that of the second electromagnetic sensor 623 in the first embodiment; specifically, the first coil group 625 includes two first rectangular coils 6250 spaced apart from each other, the length direction of the first rectangular coils 6250 is parallel to the Y-axis direction, and the two first rectangular coils 6250 are arranged along the length direction thereof; the electromagnetic sensing element on the first anti-vibration mechanism 62 only includes the first electromagnetic sensor 621 The first electromagnetic sensor 621 is arranged between the two first rectangular coils 6250; the second coil group 645 includes two second rectangular coils 6450 spaced apart from each other, the length direction of the second rectangular coil 6450 is parallel to the X-axis direction, and the two second rectangular coils 6450 are arranged along their length direction; the electromagnetic sensing element on the second vibration isolation mechanism 64 includes a second electromagnetic sensor 623 and a third electromagnetic sensor 641, the third electromagnetic sensor 641 is arranged between the two second rectangular coils 6450, and the second electromagnetic sensor 623 is arranged in the inner cavity 6452 of the second rectangular coil 6450 away from the first vibration isolation mechanism 62.

[0053] Optionally, the first electromagnetic sensor 621, the second electromagnetic sensor 623 and the third electromagnetic sensor 641 are all rectangular, the length direction of the first electromagnetic sensor 621 is perpendicular to the length direction of the first rectangular coil 6250, the second electromagnetic sensor 623 is accommodated in the inner cavity 6452 of the second rectangular coil 6450 away from the first vibration isolation mechanism 62, the length direction of the second electromagnetic sensor 623 is parallel to the length direction of the second rectangular coil 6450, and the length direction of the third electromagnetic sensor 641 is perpendicular to the length direction of the second rectangular coil 6450.

[0054] The role and function of the optical image stabilization mechanism 60 b in the third embodiment of the present application are the same as those of the optical image stabilization mechanism 60 in the first embodiment, and are not described in detail herein.

[0055] See also Fig.16 The present invention also provides an electronic device, which includes a housing 400, a mainboard 500 disposed in the housing 400, a display screen 600 disposed on the front of the housing 400, and a camera assembly 100, wherein the camera assembly 100 is disposed in the housing 400, and the camera assembly 100 and the display screen 600 are electrically connected to the mainboard 500, respectively. In this embodiment, the electronic device is a mobile phone, and the camera assembly 100 is a front lens on the mobile phone. Since the automatic focus system of the camera assembly 100 reduces deviation or instability when trying to maintain focus, the focus of the electronic device in the photographic picture can be accurately tracked, thereby improving the clarity of the image. In other embodiments, the camera assembly 100 can also be a rear lens.

[0056] In other embodiments, the camera assembly 100 may also be, but is not limited to, any electronic device that requires a lens, such as a tablet computer, a display screen, a smart TV, an electronic watch, a smart bracelet, etc.

[0057] The above is an implementation of the embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the embodiment of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. An optical image stabilization mechanism for reducing focus drift of a mover relative to a stator of a camera assembly, characterized in that: The optical image stabilization mechanism comprises: a first anti-vibration mechanism, the first anti-vibration mechanism is arranged on the X-axis of the camera assembly, the first anti-vibration mechanism comprises a first magnet group, a first coil group and a first electromagnetic sensing element, the first magnet group is arranged on a first side of the mover, the first coil group and the electromagnetic sensing element are arranged on a first side of the stator, and the first magnet group is directly opposite to the first electromagnetic sensing element and the first coil group; and, A second anti-vibration mechanism, the second anti-vibration mechanism is arranged on the Y-axis of the camera assembly, the second anti-vibration mechanism includes a second magnet group, a second coil group and a second electromagnetic sensing element, the second magnet group is arranged on the second side of the mover, the second coil group and the second electromagnetic sensing element are arranged on the second side of the stator, and the second magnet group is opposite to the second coil group and the second electromagnetic sensing element.

2. The optical image stabilization mechanism according to claim 1, characterized in that: The first coil group includes two first rectangular coils spaced apart from each other, and the two first rectangular coils are arranged along their length direction; the first electromagnetic sensing element on the first vibration isolation mechanism includes a first electromagnetic sensor and a second electromagnetic sensor, the first electromagnetic sensor is arranged between the two first rectangular coils, and the second electromagnetic sensor is arranged in the inner cavity of one of the two first rectangular coils; the second coil group includes two second rectangular coils spaced apart from each other, and the two second rectangular coils are arranged along their length direction; the second electromagnetic sensing element on the second vibration isolation mechanism includes a third electromagnetic sensor, and the third electromagnetic sensor is arranged between the two second rectangular coils.

3. The optical image stabilization mechanism according to claim 2, characterized in that: The first electromagnetic sensor, the second electromagnetic sensor and the third electromagnetic sensor are all rectangular, the length direction of the first electromagnetic sensor is perpendicular to the length direction of the first rectangular coil, the length direction of the second electromagnetic sensor is parallel to the length direction of the first rectangular coil, and the length direction of the third electromagnetic sensor is perpendicular to the length direction of the second rectangular coil.

4. The optical image stabilization mechanism according to claim 2, characterized in that: The first magnet group includes two first magnets spaced apart from each other, the two first magnets are arranged along the Y-axis direction, and the two first rectangular coils are respectively facing the two first magnets; the second magnet group includes two second magnets spaced apart from each other, the two second magnets are arranged along the X-axis direction, and the two second rectangular coils are respectively facing the two second magnets.

5. The optical image stabilization mechanism according to claim 4, characterized in that: The polarity of one of the first magnets facing the corresponding first rectangular coil is opposite to the polarity of another of the first magnets facing the other first rectangular coil; the polarity of one of the second magnets facing the corresponding second rectangular coil is opposite to the polarity of another of the second magnets facing the other second rectangular coil.

6. The optical image stabilization mechanism according to claim 4, characterized in that: One of the first magnets faces the corresponding first rectangular coil as the N pole, and another of the first magnets faces the other first rectangular coil as the S pole; one of the second magnets faces the corresponding second rectangular coil as the N pole, and another of the second magnets faces the other second rectangular coil as the S pole.

7. The optical image stabilization mechanism according to claim 4, characterized in that: The first magnet group further includes a first isolation block, the first isolation block is located between the two first magnets, and the first electromagnetic sensor faces the first isolation block.

8. The optical image stabilization mechanism according to claim 4, characterized in that: The second magnet group further includes a second isolation block, the second isolation block is located between the two second magnets, and the third electromagnetic sensor faces the second isolation block.

9. The optical image stabilization mechanism according to claim 4, characterized in that: The first anti-vibration mechanism further includes a first positioning frame connected to the mover, and two first magnets are positioned in the first positioning frame; the second anti-vibration mechanism includes a second positioning frame connected to the mover, and two second magnets are positioned in the second positioning frame.

10. The optical image stabilization mechanism according to claim 2, characterized in that: The first electromagnetic sensor is used to detect the displacement of the first magnet group in the Y-axis direction, the second electromagnetic sensor is used to detect the displacement of the first magnet group in the X-axis direction, and the third electromagnetic sensor is used to detect the displacement of the second magnet group in the X-axis direction.

11. The optical image stabilization mechanism according to claim 1, characterized in that: The first coil group includes two first rectangular coils spaced apart from each other, and the two first rectangular coils are arranged along the length direction thereof; the electromagnetic sensing element on the first vibration isolation mechanism includes a first electromagnetic sensor, and the first electromagnetic sensor is arranged between the two first rectangular coils; the second coil group includes two second rectangular coils spaced apart from each other, and the two second rectangular coils are arranged along the length direction thereof; the electromagnetic sensing element on the second vibration isolation mechanism includes a second electromagnetic sensor and a third electromagnetic sensor, and the third electromagnetic sensor is arranged between the two second rectangular coils, and the second electromagnetic sensor is arranged in the inner cavity of one of the two second rectangular coils.

12. The optical image stabilization mechanism according to claim 11, characterized in that: The first electromagnetic sensor, the second electromagnetic sensor and the third electromagnetic sensor are all rectangular, the length direction of the first electromagnetic sensor is perpendicular to the length direction of the first rectangular coil, the second electromagnetic sensor is accommodated in the inner cavity of the second rectangular coil close to the first vibration isolation mechanism, the length direction of the second electromagnetic sensor is parallel to the length direction of the second rectangular coil, and the length direction of the third electromagnetic sensor is perpendicular to the length direction of the second rectangular coil.

13. The optical image stabilization mechanism according to claim 11, characterized in that: The first electromagnetic sensor, the second electromagnetic sensor and the third electromagnetic sensor are all rectangular, the length direction of the first electromagnetic sensor is perpendicular to the length direction of the first rectangular coil, the second electromagnetic sensor is accommodated in the inner cavity of the second rectangular coil away from the first vibration isolation mechanism, the length direction of the second electromagnetic sensor is parallel to the length direction of the second rectangular coil, and the length direction of the third electromagnetic sensor is perpendicular to the length direction of the second rectangular coil.

14. A camera assembly, characterized in that: The camera assembly includes a stator, a mover arranged in the stator, a lens arranged on the mover, and an optical image stabilization mechanism as described in any one of claims 1 to 13, wherein the optical image stabilization mechanism is arranged between the stator and the mover.

15. An electronic device, characterized in that: It comprises a housing, a mainboard arranged in the housing and a camera assembly as claimed in claim 14, wherein the camera assembly is arranged in the housing and is electrically connected to the mainboard.

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