Optical image stabilization motor

Abstract

This invention belongs to the field of optical imaging equipment technology, specifically relating to an optical image stabilization motor, comprising: a base; a first movable frame, located on the base and configured to move relative to the base in a first direction and a second direction; and a carrier, located on the first movable frame and configured to rotate about a third direction, with an image sensor mounted at its top. The moving component for image stabilization in this invention is a chip, i.e., an image sensor. The image sensor is mounted on the carrier, and by moving the carrier with the fixed image sensor in the first direction, the second direction, and rotating it about a third direction, three-axis OIS (Optical Image Stabilization) operation is achieved, encompassing the first direction movement, the second direction movement, and the rotation about a third direction.

Description

Technical Field

[0001] This invention belongs to the field of optical imaging equipment technology, and specifically relates to an optical image stabilization motor. Background Technology

[0002] With the development of technology, many electronic devices today (such as smartphones or digital cameras) have the function of taking pictures or recording videos. The use of these electronic devices is becoming more and more common, and they are developing towards convenient and thinner designs to provide users with more choices.

[0003] In practical applications, to meet the shooting needs of diverse scenarios, lenses require frequent focusing and image stabilization operations. In existing technologies, the image sensor, typically positioned opposite the lens, remains stationary. A lens drive mechanism enables the lens to move along three axes relative to the image sensor. Specifically, the lens drive mechanism moves the lens along the optical axis to adjust the focal length, and also moves the lens perpendicular to the optical axis to prevent lens shake, thus achieving autofocus and image stabilization. In other words, existing lens drive mechanisms generally rely on a carrier and a lens connected to that carrier to move along three axes relative to the image sensor to achieve autofocus and image stabilization.

[0004] The aforementioned method of achieving optical zoom and optical image stabilization through the movement of the same component (carrier) is limited by factors such as the carrier's weight and size, making it difficult to effectively solve the optical image stabilization problem during shooting. Therefore, how to achieve stable optical image stabilization is a problem that urgently needs in-depth consideration by those skilled in the art. Summary of the Invention

[0005] The present invention addresses the above-mentioned technical problems by providing an optical image stabilization motor.

[0006] An optical image stabilization motor, the optical image stabilization motor comprising:

[0007] Base;

[0008] A first movable frame, located on the base and configured to move relative to the base along a first direction and a second direction;

[0009] A carrier, located on the first movable frame and configured to rotate about a third direction, with an image sensor mounted at its top.

[0010] Optionally, the optical image stabilization motor further includes a rotating circuit board, which is disposed on the outer peripheral sidewall of the carrier and located outside the first movable frame. A rotating coil is disposed on the inner wall of the rotating circuit board.

[0011] A rotating magnet is provided on the outer wall of the first movable frame. The rotating magnet is arranged opposite to the rotating coil. After the rotating coil is energized, the carrier can rotate around the first movable frame in a third direction.

[0012] Optionally, the rotating circuit board is an FPC board.

[0013] Optionally, the rotating circuit board is an arc-shaped circuit board, with one end connected to the outer periphery of the bottom of the carrier and the other end connected to the base and electrically connected to the base's built-in circuitry, or the other end of the rotating circuit board is used to electrically connect to an external circuit, so that the rotating circuit board is powered by the base's built-in circuitry or an external circuit.

[0014] Optionally, a plurality of friction-reducing components are provided between the bottom end of the carrier and the top end of the first movable frame.

[0015] Optionally, the friction-reducing component is a ball, roller, or hemispherical protrusion.

[0016] Optionally, at least one rotating ball receiving protrusion is provided on one side of the top of the first movable frame, and at least one rotating ball receiving groove is provided at the bottom of the carrier opposite to the rotating ball receiving protrusion. The rotating ball receiving protrusion is located in the rotating ball receiving groove and forms an enclosed space for receiving rotating balls. At least one rotating ball is provided in the enclosed space.

[0017] Optionally, a first rotating adsorption metal sheet is provided on the outside of the rotating circuit board, and the first rotating adsorption metal sheet is arranged opposite to the rotating magnet and adsorbs each other.

[0018] Optionally, at least one support ball is provided on the other side of the top of the first movable frame, and the top of the support ball contacts the bottom of the carrier.

[0019] Optionally, one or more second rotating adsorption metal sheets are provided inside the bottom end of the carrier, and the second rotating adsorption metal sheets are arranged opposite to and adsorbed by the translational magnets provided at the bottom end of the first movable frame.

[0020] Optionally, two rotating balls are provided between one side of the top of the first movable frame and the bottom of the carrier, and one supporting ball is provided between the other side of the top of the first movable frame and the bottom of the carrier. The line connecting the two rotating balls and the supporting ball forms a triangular structure, preferably an equilateral triangle structure.

[0021] Optionally, a rotation position sensor is provided on the inner wall of the rotating circuit board. The rotation position sensor is located inside the rotating coil and is powered by the rotating circuit board.

[0022] Optionally, the optical image stabilization motor further includes an image circuit board, which is a flexible structure and located outside the carrier and the rotating circuit board. The image sensor is mounted on the image circuit board and its bottom end is fixedly mounted on the carrier.

[0023] Optionally, the image circuit board is an FPC board.

[0024] Optionally, the image circuit board is connected to the base and electrically connected to the base's built-in wiring, or the image circuit board is used to electrically connect to external wiring, so that the image circuit board is powered by the base's built-in wiring or external wiring.

[0025] Optionally, the image circuit board is electrically connected to the rotating circuit board, and the image circuit board supplies power to the rotating circuit board.

[0026] Optionally, the image circuit board adopts an open annular structure, the image circuit board surrounds the outside of the carrier, and one end of the image circuit board has an inwardly extending circuit board extension at the top of the opening, the circuit board extension being fixed and electrically connected to the image circuit board.

[0027] Optionally, the top of the base is provided with two sets of translation coils, and the bottom of the first movable frame is provided with two sets of translation magnets. Each set of translation magnets and the corresponding translation coil are arranged vertically opposite each other. After the translation coil is energized, the first movable frame, together with the carrier and the image sensor, can perform translational movements in the first direction and the second direction relative to the base.

[0028] Optionally, the optical image stabilization motor further includes a second movable frame, which is located on the base, and the first movable frame is located on the second movable frame;

[0029] After a set of the translation coils are energized, the first movable frame, together with the carrier and the image sensor, can perform a translational movement in a first direction relative to the second movable frame.

[0030] After the other set of translation coils is energized, the second movable frame, together with the first movable frame, the carrier, and the image sensor, can perform a second-direction translational movement relative to the base.

[0031] Optionally, a plurality of friction-reducing components are provided between the bottom end of the first movable frame and the top end of the second movable frame.

[0032] Optionally, a plurality of friction-reducing components are provided between the bottom end of the second movable frame and the top end of the base.

[0033] Optionally, the bottom end of the first movable frame and the top end of the second movable frame are respectively provided with corresponding first ball grooves, and at least one first ball is provided in the first ball groove.

[0034] Optionally, the bottom end of the second movable frame and the top end of the base are respectively provided with corresponding second ball grooves, and at least one second ball is provided in the second ball groove.

[0035] Optionally, the second movable frame is provided with a clearance opening for avoiding the translation coil.

[0036] Optionally, the base is provided with two translational adsorption metal plates, each of which is arranged opposite to and adsorbs the corresponding translational magnet.

[0037] Optionally, the optical image stabilization motor further includes a translation circuit board, which is disposed on the base and has two sets of translation coils, which are powered by the translation circuit board.

[0038] Optionally, the translation circuit board is an FPC board.

[0039] Optionally, the translation circuit board is connected to the base and electrically connected to the base's built-in wiring, or the translation circuit board is used to electrically connect to external wiring, so that the translation circuit board is powered by the base's built-in wiring or external wiring.

[0040] Optionally, the translation circuit board is provided with two translation position sensors, each of which is located inside the corresponding translation coil, and the translation circuit board supplies power to the translation position sensors.

[0041] Optionally, the optical image stabilization motor further includes a housing, which is detachably connected to the base and forms a hollow cavity, wherein the first movable frame and the carrier are both disposed within the hollow cavity.

[0042] Beneficial effects: The present invention has at least one or more of the following advantages:

[0043] 1. The moving component for image stabilization in this invention is a chip, specifically an image sensor. The image sensor is mounted on a carrier, and by moving the carrier with the fixed image sensor in a first direction, a second direction, and rotating it around a third direction, three-axis OIS (Optical Image Stabilization) is achieved. Compared to existing technologies, this invention operates the OIS independently, relatively independent of the lens and zoom components, allowing for a wider range of motion and achieving superior OIS stabilization, resulting in better image quality. Furthermore, the moving image sensor is relatively lighter and requires less driving force.

[0044] 2. The present invention, through the design of a rotating circuit board, not only provides power to the rotating coil, but also, when using an arc-shaped FPC board, provides a reset effect after the carrier and image sensor are rotated.

[0045] 3. The present invention provides several friction-reducing components between the carrier and the first movable frame, between the first movable frame and the second movable frame, and between the second movable frame and the base, thereby reducing the friction between the relatively moving components and also providing a motion guiding effect.

[0046] 4. This invention achieves the monitoring of translational and rotational positions by setting corresponding position sensors inside each coil, so that each position sensor is positioned opposite to and cooperates with the corresponding magnet.

[0047] 5. By designing a graphic circuit board, the present invention, due to the flexible structure of the image circuit board, can not only maintain power supply when the image sensor moves, but also provide a reset effect after the image sensor is translated or rotated. Attached Figure Description

[0048] Figure 1 This is a schematic diagram of one structure of the present invention;

[0049] Figure 2 for Figure 1 AA section view;

[0050] Figure 3 for Figure 1 Exploded view;

[0051] Figure 4 for Figure 3 Further exploded view;

[0052] Figure 5 for Figure 3 Partial exploded view;

[0053] Figure 6 This is an exploded view showing the positional relationship between the base, the first movable frame, and the carrier of the present invention.

[0054] Figure 7 This is an exploded view showing the positional relationship between the carrier and the rotating circuit board of the present invention.

[0055] Figure 8 This is an exploded view showing the positional relationship between the base, the first movable frame, and the second movable frame of the present invention.

[0056] Figure 9 for Figure 8 Another angle view of the first movable frame;

[0057] Figure 10 This is an exploded view showing the positional relationship between the base and the second movable frame of the present invention.

[0058] Figure 11 for Figure 10 Another angle diagram of the second movable frame;

[0059] Figure 12 This is an exploded view showing the positional relationship between the base and the translation circuit board of this invention. Detailed Implementation

[0060] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so as to better understand the purpose, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are only for illustrating the essential spirit of the technical solution of the present invention.

[0061] In the following description, certain specific details are set forth for the purpose of illustrating various disclosed embodiments in order to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the art will recognize that the embodiments may be practiced without one or more of these specific details. In other instances, well-known apparatuses, structures, and techniques associated with this application may not have been shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0062] Throughout this specification, references to "an embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Therefore, the appearance of "in an embodiment" or "an embodiment" in various places throughout the specification does not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic may be combined in any manner in one or more embodiments.

[0063] In the following description, in order to clearly demonstrate the structure and operation of the present invention, a number of directional terms will be used. However, terms such as "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", and "down" should be understood as convenient terms and not as limiting terms.

[0064] In the following description, the first direction is defined as the X-axis, the second direction as the Y-axis, and the third direction as the Z-axis, which is the optical axis. The optical axis represents the direction of light propagation within an optical element; it is an abstract concept and does not refer to a physical axis.

[0065] Reference Figures 1 to 12 This invention provides an optical image stabilization motor, which includes a housing 10, a base 20, a first movable frame 30, and a carrier 40.

[0066] The outer shell 10 is an optional structure of the present invention. The outer shell 10 is detachably connected to the base 20 and forms a hollow cavity. Components such as the carrier 40 and the first movable frame 30 are all disposed within the hollow cavity. The outer shell 10 and the base 20 are preferably connected by a snap-fit ​​connection to form the hollow cavity.

[0067] The first movable frame 30 is located on the base 20, and the carrier 40 is located on the first movable frame 30. The top of the carrier 40 is used to mount the image sensor 50. The image sensor 50 is fixedly connected to the top of the carrier 40 and is located in the hollow cavity.

[0068] The first movable frame 30, together with the carrier 40 and the image sensor 50 thereon, can move relative to the base 20 along the X-axis and Y-axis. The carrier 40, together with the image sensor 50 thereon, can rotate relative to the first movable frame 30 around the Z-axis, thereby realizing three-axis OIS stabilization operation of X-axis translation, Y-axis translation, and rotation around the Z-axis.

[0069] The moving part of the present invention that achieves image stabilization is a chip, namely an image sensor 50. The image sensor 50 is mounted on a carrier 40, and the carrier 40 can move relative to the base 20, thereby driving the image sensor 50 to move. The image sensor 50 moves in the opposite direction to the incoming light to achieve the OIS image stabilization effect.

[0070] The optical image stabilization motor of this invention can be applied in an optical drive device, and can be used as part of the optical drive device to achieve image stabilization operation. The optical drive device may also include a zoom mechanism for realizing the zoom operation of the lens. The optical image stabilization motor and the zoom mechanism of this invention cooperate to achieve image stabilization and zoom functions.

[0071] In practical implementation, all components of the optical image stabilization motor of the present invention, except for the housing 10, are provided with light-avoiding openings extending along the Z-axis to avoid light. An image sensor 50 is positioned above the light-avoiding opening, receiving light entering from the lower light-avoiding opening. In this case, the zoom mechanism can be positioned below the base 20. Alternatively, a light-avoiding opening with internal and external communication can be provided on the housing 10, with the image sensor 50 located below the housing 10, receiving light entering from the top of the housing 10. In this case, the zoom mechanism can be positioned at the top of the housing 10.

[0072] In one embodiment, reference is made to Figure 4 , Figure 6 and Figure 7 The optical image stabilization motor also includes a rotating circuit board 60, which is disposed on the outer peripheral sidewall of the carrier 40. The rotating circuit board 60 is located outside the first movable frame 30, and a rotating coil 61 is disposed on the inner wall of the rotating circuit board 60. (See reference...) Figure 4 , Figure 6 , Figure 8 and Figure 9 A rotating magnet 31 is provided on the outer wall of the first movable frame 30. The rotating magnet 31 and the rotating coil 61 are arranged opposite each other. After the rotating coil 61 is energized, the carrier 40 can rotate relative to the first movable frame 30 around the Z-axis.

[0073] In specific implementation, since the rotating circuit board 60 is set on the outer peripheral side wall of the carrier 40, and a rotating coil clearance opening 41 with internal and external communication is provided on the side wall of the carrier, the rotating coil 61 passes through the rotating coil clearance opening 41 and is opposite to the rotating magnet 31 on its inner side. Through the rotating coil clearance opening 41, there is no obstruction between the rotating coil 61 and the rotating magnet 31.

[0074] In one embodiment, the rotating circuit board 60 is an FPC board.

[0075] In one embodiment, reference is made to Figure 7 The rotating circuit board 60 is an arc-shaped circuit board. One end of the rotating circuit board 60 is connected to the outer periphery of the bottom of the carrier 40, and the other end of the rotating circuit board 60 is connected to the base 20 and electrically connected to the built-in circuit inside the base 20. Alternatively, the other end of the rotating circuit board 60 can be electrically connected to an external circuit, so that the rotating circuit board 60 is powered by the built-in circuit inside the base or the external circuit.

[0076] In one embodiment, reference is made to Figure 6 and Figure 8 The first movable frame 30 adopts a ring-like structure. An arc-shaped cutout 32 is provided on the outer periphery of one side of the first movable frame 30. Movable frame baffles 33 are provided at both ends of the arc-shaped cutout 32. The rotating magnet 31 is located on the radial inner side of the arc-shaped cutout 32.

[0077] Reference Figure 6 and Figure 7 The carrier 40 adopts a ring-like structure. A section of arc-shaped limiting plate 42 is provided on the outer periphery of the bottom of the carrier 40. The rotating coil clearance opening 41 is provided on the arc-shaped limiting plate 42. The arc-shaped limiting plate 42 is located in the arc-shaped cutout 32. There is a preset distance between the two circumferential ends of the arc-shaped limiting plate 42 and the movable frame baffle 33. The preset distance is the rotation stroke of the carrier 40.

[0078] Through the above design, this embodiment enables the carrier 40 to rotate along the inner wall of the arc-shaped cutout 32 when the carrier 40 rotates, thus providing a guiding effect on the rotation of the carrier 40. In addition, the movable frame baffles 33 on both sides serve as the limit for the carrier 40, restricting the carrier 40 to rotate only within a preset rotation angle range.

[0079] In one embodiment, a plurality of friction-reducing components are provided between the bottom end of the carrier 40 and the top end of the first movable frame 30.

[0080] In one embodiment, the friction-reducing element is a ball, roller, or hemispherical protrusion.

[0081] In one embodiment, the friction-reducing element is a rotating ball bearing 71.

[0082] Reference Figure 6 and Figure 8 The first movable frame 30 has at least one rotating ball bearing receiving protrusion 34 on one side of its top. (See reference...) Figure 7 The bottom end of the carrier 40 is provided with at least one rotating ball receiving groove 44 opposite to the rotating ball receiving protrusion 34. The rotating ball receiving protrusion 34 is located in the rotating ball receiving groove 44 and forms an enclosed space for receiving the rotating ball 71. At least one rotating ball 71 is provided in the enclosed space.

[0083] In one embodiment, reference is made to Figure 6 and Figure 7 A first rotating adsorption metal sheet 72 is provided on the outer side of the rotating circuit board 60. The first rotating adsorption metal sheet 72 is preferably made of iron. The first rotating adsorption metal sheet 72 and the rotating magnet 31 are arranged opposite to each other and attract each other. An adsorption force is generated between the two, so that the inner wall of the rotating ball receiving groove 44 and the rotating ball 71 are in close contact. When the carrier 40 rotates relative to the first movable frame 30, the rotating ball 71 rolls in the enclosed space, reducing the friction when the carrier 40 rotates and maintaining the abutting rolling effect of the rotating ball 71.

[0084] In one embodiment, reference is made to Figure 8At least one support ball 73 is provided on the other side of the top of the first movable frame 30, and the top of the support ball 73 contacts the bottom of the carrier 40. The support ball 73 and the rotating ball 71 cooperate to provide stable support for the carrier 40.

[0085] In one embodiment, reference is made to Figure 7 One or more second rotating adsorption metal sheets 74 are provided inside the bottom end of the carrier 40. The second rotating adsorption metal sheets 74 are preferably made of iron. The second rotating adsorption metal sheets 74 are arranged opposite to and adsorbed by the translational magnet 35 provided at the bottom end of the first movable frame 30.

[0086] like Figure 7 As shown, two second rotating adsorption metal plates 74 are arranged circumferentially inside the bottom end of the carrier 40, corresponding to two sets of translational magnets 35 respectively. An adsorption force is generated between a single second rotating adsorption metal plate 74 and the corresponding set of translational magnets 35, so that the carrier 40 is stably placed on the top of the first movable frame 30 and performs a stable rotation, while preventing the rotating ball 71 from detaching from the top of the enclosed space.

[0087] In one embodiment, reference is made to Figure 8 Two rotating balls 71 are provided between one side of the top of the first movable frame 30 and the bottom of the carrier 40, and a supporting ball 73 is provided between the other side of the top of the first movable frame 30 and the bottom of the carrier 40. The line connecting the two rotating balls 71 and the supporting ball 73 is a triangular structure, preferably an equilateral triangle structure.

[0088] With the above design, a stable triangular relationship is established between one support ball 73 and two rotating balls 71, which can provide more stable support for the carrier 40.

[0089] In one embodiment, a rotation position sensor is provided on the inner wall of the rotating circuit board 60. The rotation position sensor is located inside the rotating coil 61 and is powered by the rotating circuit board 60. Since the rotation position sensor is located inside the rotating coil 61, it must be positioned opposite to the rotating magnet 31. Through the cooperation of the rotation position sensor and the corresponding rotating magnet 31, the rotational position of the carrier 40 around the Z-axis can be monitored.

[0090] In one embodiment, reference is made to Figure 4 and Figure 5 The optical image stabilization motor also includes an image circuit board 80, which is a flexible structure. The image circuit board 80 is located outside the carrier 40 and the rotating circuit board 60. The image sensor 50 is mounted on the image circuit board 80 and the bottom end of the image sensor 50 is fixedly mounted on the carrier 40.

[0091] In practice, the image sensor 50, along with its substrate, is mounted on the image circuit board 80. The image circuit board 80 can maintain power supply when the image sensor 50 is moved.

[0092] In one embodiment, the image circuit board 80 is an FPC board.

[0093] In one embodiment, the image circuit board 80 is connected to the base 20 and electrically connected to the base-built-in wiring within the base 20, or the image circuit board 80 is used to electrically connect to external wiring, so that the image circuit board 80 is powered by the base-built-in wiring or external wiring.

[0094] In one embodiment, the image circuit board 80 is electrically connected to the rotating circuit board 60, and the image circuit board 80 supplies power to the rotating circuit board 60.

[0095] In practice, the rotating circuit board 60 is an arc-shaped circuit board. One end of the rotating circuit board 60 is connected to the outer periphery of the bottom of the carrier 40, and the other end of the rotating circuit board 60 is electrically connected to the image circuit board 80.

[0096] In one embodiment, reference is made to Figure 5 The image circuit board 80 adopts an open ring structure. The image circuit board 80 surrounds the outside of the carrier 40. One end of the image circuit board 80 has an inwardly extending circuit board extension 81 at the top of the opening. The circuit board extension 81 is fixed and electrically connected to the image circuit board 80.

[0097] In a specific implementation, the carrier 40 is mounted on the first movable frame 30, and the image circuit board 80 surrounds the carrier 40 and the outside of the first movable frame 30. When the base 20 is provided with an upwardly protruding annular support 21, the first movable frame 30 is located on the annular support 21, and the image circuit board 80 surrounds the outside of the annular support 21.

[0098] In one embodiment, reference is made to Figure 4 , Figure 8 and Figure 10 Two sets of translation coils 22 are provided at the top of the base 20. (See reference...) Figure 9 The bottom of the first movable frame 30 is provided with two sets of translation magnets 35. Each set of translation magnets 35 is arranged vertically opposite to the corresponding translation coil 22. After the translation coil 22 is energized, the first movable frame 30, together with the carrier 40 and the image sensor 50, can perform translational movements in the X-axis and Y-axis directions relative to the base 20.

[0099] In practice, a groove can be provided at the bottom of the first movable frame 30 and a translation magnet 35 can be installed.

[0100] In one embodiment, reference is made to Figure 8 , Figures 10 to 11The optical image stabilization motor also includes a second movable frame 90, which is located in the hollow cavity and between the base 20 and the first movable frame 30. That is, the second movable frame 90 is located on the base 20 and the first movable frame 30 is located on the second movable frame 90.

[0101] After one set of translation coils 22 is energized, the first movable frame 30, together with the carrier 40 and the image sensor 50, can perform translational movement in the X-axis direction relative to the second movable frame 90. After the other set of translation coils 22 is energized, the second movable frame 90, together with the first movable frame 30, the carrier 40 and the image sensor 50, can perform translational movement in the Y-axis direction relative to the base 20.

[0102] In one embodiment, a plurality of friction-reducing components are provided between the bottom end of the first movable frame 30 and the top end of the second movable frame 90.

[0103] In one embodiment, a plurality of friction-reducing components are provided between the bottom end of the second movable frame 90 and the top end of the base 20.

[0104] In one embodiment, reference is made to Figure 9 The bottom end of the first movable frame 30 is provided with a first ball groove 36 on the side of the first movable frame, as shown in the figure. Figure 8 and Figure 10 The top of the second movable frame 90 is provided with a first ball groove 91 on the side of the second movable frame. The first ball groove 36 on the side of the first movable frame and the first ball groove 9 on the side of the second movable frame are arranged vertically opposite each other to form a ball groove in which at least one first ball 75 is provided.

[0105] When the first movable frame 30 performs X-axis translational movement, the first movable frame 30 moves relative to the second movable frame 90 in the X-axis direction, and the first ball 75 moves in the first ball groove to reduce the friction of the translational movement.

[0106] In specific implementation, three first ball bearings 75 are provided between the bottom end of the first movable frame 30 and the top end of the second movable frame 90. The line connecting the three first ball bearings 75 is a triangular structure, preferably a right-angled triangle structure, and more preferably an isosceles right-angled triangle structure.

[0107] In one embodiment, reference is made to Figure 11 The bottom end of the second movable frame 90 is provided with a second ball groove 92 on the side of the second movable frame, as shown in the reference. Figure 10 and Figure 12The base 20 has a second ball groove 23 on its top side, and a second ball groove 92 on the second movable frame side and the second ball groove 23 on the base side are arranged vertically opposite each other to form a ball groove in which at least one second ball 76 is disposed. When the first movable frame 30 moves in the Y-axis direction, the first movable frame 30 drives the second movable frame 90 to move together relative to the base 20 in the Y-axis direction, and the second ball 76 moves in the second ball groove to reduce the friction of the translational movement.

[0108] In one embodiment, reference is made to Figure 10 and Figure 11 The second movable frame 90 is provided with a translation coil avoidance opening 93 to avoid obstruction between the translation coil 22 and the translation magnet 35.

[0109] Of course, the shape of the second movable frame 90 can be modified so that it directly avoids the position of the translation coil 22.

[0110] In one embodiment, reference is made to Figure 12 The base 20 is provided with two translational adsorption metal plates 77, which are preferably made of iron. Each translational adsorption metal plate 77 is arranged opposite to and adsorbs onto the corresponding translational magnet 35.

[0111] In practical implementation, a groove can be set on the top of the base 20 and a translational adsorption metal sheet 77 can be installed. The translational adsorption metal sheet 77 and the translational magnet 35 generate an adsorption force, which makes the structure between the base 20, the first movable frame 30 and the second movable frame 90 more stable, and at the same time can prevent the first ball bearing 75 and the second ball bearing 76 from falling out of the groove.

[0112] In one embodiment, reference is made to Figure 10 and Figure 12 The optical image stabilization motor also includes a translation circuit board 24, which is mounted on the base 20. Two sets of translation coils 22 are mounted on the translation circuit board 24, and the translation circuit board 24 supplies power to the translation coils 22.

[0113] Of course, the translation circuit board 24 design can also be omitted, and the two sets of translation coils 22 can be directly mounted on the base 20, and the two sets of translation coils 22 can be powered directly by the built-in circuit of the base.

[0114] In specific implementation, if there are balls between the base 20 and the second movable frame 90, a ball clearance opening 25 is provided on the translation circuit board 24 to avoid the balls.

[0115] In one embodiment, the translation circuit board 24 is an FPC board.

[0116] In one embodiment, the translation circuit board 24 is connected to the base 20 and electrically connected to the base-built-in wiring within the base 20, or the translation circuit board 24 is used to electrically connect to external wiring, so that the translation circuit board 24 is powered by the base-built-in wiring or external wiring.

[0117] In one embodiment, two translation position sensors are provided on the translation circuit board 24. Each translation position sensor is located inside the corresponding translation coil 22, and the translation circuit board 24 supplies power to the translation position sensors.

[0118] Since the translation position sensor is located inside the translation coil 22, it must be positioned opposite to the translation magnet 35. Through the cooperation of the translation position sensor and the corresponding translation magnet 35, the translation position of the first movable frame 30 in the X-axis and Y-axis directions can be monitored.

[0119] In one embodiment, reference is made to Figure 6 , Figure 8 , Figure 10 and Figure 12 The base 20 adopts a ring structure, and a ring support 21 is provided on the base 20. The ring support 21 is preferably integrally formed with the base 20. The outer shell 10 is detachably connected to the base 20 on the outside of the ring support 21.

[0120] The annular support base 21 is provided with, from bottom to top, a translation circuit board 24, a second movable frame 90, a first movable frame 30, a carrier 40, and an image sensor 50. A second ball bearing 76 is provided between the annular support base 21 and the second movable frame 90. A translation adsorption metal sheet 77 is mounted on the annular support base 21.

[0121] In one embodiment, the annular support 21 is provided with three positioning blocks 26, namely a first positioning block, a second positioning block and a common positioning block. The first positioning block and the common positioning block are arranged at a preset distance along the first direction, that is, the X-axis direction, and the second positioning block and the common positioning block are arranged at a preset distance along the second direction, that is, the Y-axis direction, so that the line connecting the three positioning blocks 26 is an approximately right-angled triangle structure.

[0122] The second movable frame 90 is provided with three clearance openings, and three positioning blocks 26 pass through the three clearance openings respectively. The positioning blocks in the X-axis direction abut / contact with the clearance openings in the X-axis direction to limit the movement of the second movable frame 90 in the X-axis direction, preventing it from moving. The positioning blocks in the Y-axis direction are at a preset distance from the clearance openings in the Y-axis direction; this preset distance is the travel distance of both the second movable frame 90 and the first movable frame 30 in the Y-axis direction.

[0123] The first movable frame 30 is provided with two first movable frame clearance openings and a first movable frame clearance groove at its bottom end. A first positioning block and a second positioning block pass through the two first movable frame clearance openings, preferably with their tops flush. A common positioning block is inserted into the first movable frame clearance groove. Each positioning block is spaced at a preset distance from the first movable frame clearance opening and the first movable frame clearance groove in both the X-axis and Y-axis directions. This preset distance is the travel distance of the first movable frame 30 in the X-axis and Y-axis directions.

[0124] This embodiment, through the design of three positioning blocks 26, combined with the design of the first movable frame 30 and the second movable frame 90, restricts the position and travel distance in the X-axis and Y-axis directions. The positioning of the first movable frame 30 is facilitated by inserting a common positioning block into the clearance groove of the first movable frame.

[0125] Of course, the first movable frame clearance slot on the first movable frame 30 can also be changed to a first movable frame clearance opening design.

[0126] The preferred embodiments of the present invention have been described in detail above. However, it should be understood that after reading the above teachings, those skilled in the art can make various alterations or modifications to the present invention. These equivalent forms also fall within the scope defined by the appended claims.

Claims

1. An optical image stabilization motor, characterized in that, The optical image stabilization motor includes: Base; A first movable frame, located on the base and configured to move relative to the base along a first direction and a second direction; A carrier, located on the first movable frame and configured to rotate about a third direction, with an image sensor mounted at its top.

2. The optical image stabilization motor as described in claim 1, characterized in that, The optical image stabilization motor also includes a rotating circuit board, which is disposed on the outer peripheral sidewall of the carrier. The rotating circuit board is located outside the first movable frame, and a rotating coil is disposed on the inner wall of the rotating circuit board. A rotating magnet is provided on the outer wall of the first movable frame. The rotating magnet is arranged opposite to the rotating coil. After the rotating coil is energized, the carrier can rotate around the first movable frame in a third direction.

3. The optical image stabilization motor as described in claim 2, characterized in that, The rotating circuit board is made of FPC board; Preferably, the rotating circuit board is an arc-shaped circuit board, one end of which is connected to the outer periphery of the bottom of the carrier, and the other end of which is connected to the base and electrically connected to the base's built-in circuitry, or the other end of which is used to electrically connect to an external circuitry, so that the rotating circuit board is powered by the base's built-in circuitry or an external circuitry.

4. The optical image stabilization motor as described in claim 2, characterized in that, Several friction-reducing components are provided between the bottom end of the carrier and the top end of the first movable frame; Preferably, the friction-reducing component is a ball, roller, or hemispherical protrusion; More preferably, at least one rotating ball receiving protrusion is provided on one side of the top of the first movable frame, and at least one rotating ball receiving groove is provided at the bottom of the carrier opposite to the rotating ball receiving protrusion. The rotating ball receiving protrusion is located in the rotating ball receiving groove and forms an enclosed space for receiving rotating balls. At least one rotating ball is provided in the enclosed space. More preferably, a first rotating adsorption metal sheet is provided on the outer side of the rotating circuit board, and the first rotating adsorption metal sheet is disposed opposite to the rotating magnet and adsorbs each other; More preferably, at least one support ball is provided on the other side of the top of the first movable frame, and the top of the support ball contacts the bottom of the carrier; More preferably, one or more second rotating adsorption metal sheets are provided inside the bottom end of the carrier, and the second rotating adsorption metal sheets are arranged opposite to and adsorbed by the translational magnets provided at the bottom end of the first movable frame. More preferably, two rotating balls are provided between one side of the top of the first movable frame and the bottom of the carrier, and one supporting ball is provided between the other side of the top of the first movable frame and the bottom of the carrier. The line connecting the two rotating balls and the supporting ball forms a triangular structure, preferably an equilateral triangle structure.

5. The optical image stabilization motor as described in claim 2, characterized in that, A rotation position sensor is provided on the inner wall of the rotating circuit board. The rotation position sensor is located inside the rotating coil and is powered by the rotating circuit board.

6. The optical image stabilization motor as described in any one of claims 2 to 5, characterized in that, The optical image stabilization motor also includes an image circuit board, which is a flexible structure. The image circuit board is located outside the carrier and the rotating circuit board. The image sensor is mounted on the image circuit board and its bottom end is fixedly mounted on the carrier. Preferably, the image circuit board is an FPC board; Preferably, the image circuit board is connected to the base and electrically connected to the base's built-in wiring, or the image circuit board is used to be electrically connected to external wiring, so that the image circuit board is powered by the base's built-in wiring or external wiring. Preferably, the image circuit board is electrically connected to the rotating circuit board, and the rotating circuit board is powered by the image circuit board; Preferably, the image circuit board adopts an open annular structure, the image circuit board surrounds the outside of the carrier, and one end of the image circuit board has an inwardly extending circuit board extension, which is fixed and electrically connected to the image circuit board.

7. The optical image stabilization motor as described in any one of claims 1 to 5, characterized in that, Two sets of translation coils are provided at the top of the base, and two sets of translation magnets are provided at the bottom of the first movable frame. Each set of translation magnets and the corresponding translation coil are arranged vertically opposite each other. After the translation coil is energized, the first movable frame, together with the carrier and the image sensor, can perform translational movements in the first direction and the second direction relative to the base.

8. The optical image stabilization motor as described in claim 7, characterized in that, The optical image stabilization motor also includes a second movable frame, which is located on the base, and the first movable frame is located on the second movable frame; After a set of the translation coils are energized, the first movable frame, together with the carrier and the image sensor, can perform a translational movement in a first direction relative to the second movable frame. After the other set of translation coils is energized, the second movable frame, together with the first movable frame, the carrier and the image sensor, can perform a second-direction translational movement relative to the base. Preferably, a plurality of friction-reducing components are provided between the bottom end of the first movable frame and the top end of the second movable frame; and / or, a plurality of friction-reducing components are provided between the bottom end of the second movable frame and the top end of the base; Preferably, the friction-reducing component is a ball, roller, or hemispherical protrusion; More preferably, the bottom end of the first movable frame and the top end of the second movable frame are respectively provided with corresponding first ball grooves, and at least one first ball is provided in the first ball groove; More preferably, the bottom end of the second movable frame and the top end of the base are respectively provided with corresponding second ball grooves, and at least one second ball is provided in the second ball groove; Preferably, the second movable frame is provided with a clearance opening for avoiding the translation coil.

9. The optical image stabilization motor as described in claim 7, characterized in that, The base is provided with two translational adsorption metal plates, each of which is arranged opposite to and adsorbed by the corresponding translational magnet. And / or, the optical image stabilization motor further includes a translation circuit board, which is disposed on the base and has two sets of translation coils disposed on it, and the translation circuit board supplies power to the translation coils; Preferably, the translation circuit board is an FPC board; Preferably, the translation circuit board is connected to the base and electrically connected to the base's built-in wiring, or the translation circuit board is used to electrically connect to external wiring, so that the translation circuit board is powered by the base's built-in wiring or external wiring. Preferably, the translation circuit board is provided with two translation position sensors, each of which is located inside the corresponding translation coil, and the translation circuit board supplies power to the translation position sensors.

10. The optical image stabilization motor as described in any one of claims 1 to 5, characterized in that, The optical image stabilization motor also includes a housing, which is detachably connected to the base and forms a hollow cavity. The first movable frame and the carrier are both disposed in the hollow cavity.

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