CN117560557B - Anti-shake motor of anti-magnetic interference and camera module - Google Patents
Anti-shake motor of anti-magnetic interference and camera module Download PDFInfo
- Publication number
- CN117560557B CN117560557B CN202410039200.1A CN202410039200A CN117560557B CN 117560557 B CN117560557 B CN 117560557B CN 202410039200 A CN202410039200 A CN 202410039200A CN 117560557 B CN117560557 B CN 117560557B
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- shake
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- 230000003068 static effect Effects 0.000 claims abstract description 5
- 238000003466 welding Methods 0.000 claims description 6
- 239000000872 buffer Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 5
- 230000003287 optical effect Effects 0.000 abstract description 3
- 230000005389 magnetism Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
- H04N23/682—Vibration or motion blur correction
- H04N23/685—Vibration or motion blur correction performed by mechanical compensation
- H04N23/687—Vibration or motion blur correction performed by mechanical compensation by shifting the lens or sensor position
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Adjustment Of Camera Lenses (AREA)
Abstract
The invention relates to the technical field of optical anti-shake, in particular to an anti-shake motor and an anti-shake module with magnetic interference, which comprise a base, a focusing assembly and an anti-shake assembly, wherein the focusing assembly and the anti-shake assembly are arranged in the base, an AF static magnetic type framework is adopted on an AF driving layer, namely an AF coil is fixed on an AF frame as a moving part, a magnet is fixed on the base as a fixed part, and the magnetic interference among the anti-shake motors or the influence of peripheral metal components on the motors in a plurality of camera modules is avoided, so that the anti-shake effect is further improved.
Description
Technical Field
The invention relates to the technical field of optical anti-shake, in particular to an anti-shake motor with anti-magnetic interference and a camera module.
Background
Along with the progress of technology, the shooting functions of cameras of the existing electronic devices are more and more powerful, and the number of cameras configured is more and more, for example, some mobile phones comprise four cameras, namely a main camera, an ultra-wide-angle camera, a long-focus camera and a micro-distance camera. In order to avoid the problem of blurring of images caused by shaking, at least one of the existing mobile phone cameras is an OIS anti-shaking camera, and the principle is that a lens driving device is arranged around an optical lens to correct deviation caused by shaking and improve the quality of photographed images.
Conventional camera motors (lens driving devices) are of moving-magnet type, in which magnets of the motor are fixed to a magnet holder of a movable part, and driving coils are fixed to a lens holder, a base, or a housing. Although the moving magnet motor can achieve the purpose of anti-shake, the problem that the anti-shake effect of the whole camera is affected by magnetic interference generated between the motors or between the motors and peripheral components is caused by magnetic interference generated between magnets on the movable part and other peripheral motors or metal components, so that the movable part deviates from the original set value, and therefore, how to avoid the magnetic interference is very important.
It should be noted that the information disclosed in this background section is only for the purpose of increasing the understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.
Disclosure of Invention
In order to solve the above-mentioned problems in the background art, the present invention provides an anti-shake motor with anti-magnetic interference, which includes: the focusing device comprises a base, a focusing assembly and an anti-shake assembly, wherein the focusing assembly and the anti-shake assembly are arranged in the base, and the focusing assembly is of a static magnetic type architecture;
the focusing assembly comprises an AF movable part and two AF magnets, the AF movable part comprises an AF frame, two AF coils and an AF soft board, the AF frame is movably arranged in the base, the two AF coils are fixed on the outer side of the periphery of the AF frame, the AF soft board is arranged on the AF frame, the AF soft board is electrically connected with the two AF coils, the two AF magnets are fixed on the periphery of the base, the setting positions of the AF soft board correspond to the two AF coils, and the two AF coils and the two AF magnets are subjected to relative motion after being electrified to drive the AF frame to move;
the anti-shake assembly comprises an OIS soft board, two OIS coils and an OIS movable part, wherein the OIS soft board is attached to the base, the tail end of the OIS soft board extends downwards out of the base to form a pin, the two OIS coils are fixed on the base, and the two OIS coils are electrically connected with the OIS soft board;
the OIS movable part comprises a lens seat, a cover plate and two OIS magnets, wherein the lens seat is arranged in the AF frame, the cover plate is arranged on the lens seat, the two OIS magnets are fixed at positions corresponding to the two OIS coils on the outer side of the periphery of the lens seat, and when the two OIS coils are electrified, the two OIS coils and the two OIS magnets perform relative movement to drive the lens seat to move.
Further, the focusing assembly further comprises at least two AF guide posts, wherein the two AF guide posts are arranged on the opposite angles of the periphery of the AF frame, the two AF guide posts are movably connected with the AF frame, and the two AF guide posts penetrate through the AF frame to be connected with the base.
Further, extension parts are arranged at two ends of the AF soft board, welding parts are formed by extending the tail ends of the extension parts, and the AF soft board is connected to the base through the welding parts.
Further, the focusing assembly further comprises a cover plate, the cover plate is arranged on the AF frame, and a plurality of buffering pieces are arranged on the cover plate.
Further, the AF soft board is electrically connected with the OIS soft board through the welding part.
Further, the OIS movable portion further comprises an OIS ball bearing seat and a plurality of balls, the OIS ball bearing seat is arranged between the mirror seat and the AF frame, ball portions are arranged at four corners of the OIS ball bearing seat, ball grooves for accommodating the balls are formed in the upper surface and the lower surface of the ball portions, the positions, corresponding to the ball portions, of the lower section of the mirror seat are provided with the ball grooves, the positions, corresponding to the ball portions, of the AF frame are provided with the ball grooves, and the OIS ball bearing seat is movably connected with the mirror seat and the AF frame through the balls.
Further, the plurality of balls protrude from the notch when placed in the ball groove.
Further, the number of OIS balls is 8.
Further, the anti-shake motor with magnetic interference resistance further comprises an outer cover, and the outer cover covers the base.
The invention also provides a camera module, which is characterized in that: an anti-shake motor comprising at least one anti-magnetic interference as claimed in any one of the preceding claims.
Based on the above, compared with the prior art, the anti-shake motor with anti-magnetic interference provided by the invention adopts an AF static magnetic framework on an AF driving layer, namely an AF coil is fixed on an AF frame as a moving part, and a magnet is fixed on a base as a fixed part, so that magnetic interference among the anti-shake motors in a plurality of camera modules or the influence of peripheral metal components on the motors is avoided, and the anti-shake effect is further improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description. The objects and other advantages of the invention may be realized and obtained by means of the instrumentalities particularly pointed out in the specification and the like.
Drawings
For a clearer description of embodiments of the invention or of the solutions of the prior art, a brief description will be given below of the drawings that are needed in the description of the embodiments or of the prior art, it being obvious that the drawings in the description below are some embodiments of the invention, from which other drawings can be obtained, without the aid of inventive labour, for a person skilled in the art; in the following description, the positional relationship described in the drawings is based on the orientation of the components shown in the drawings unless otherwise specified.
FIG. 1 is a schematic diagram of an anti-shake motor with anti-magnetic interference according to an embodiment of the invention;
FIG. 2 is a schematic diagram of an explosion structure of an anti-shake motor with magnetic interference resistance according to an embodiment of the invention;
fig. 3 is a schematic view of an AF movable part according to an embodiment of the present invention;
FIG. 4 is a schematic view of an AF soft board provided in an embodiment of the present invention;
FIG. 5 is a schematic diagram of an anti-shake assembly according to an embodiment of the invention;
FIG. 6 is a schematic diagram of an OIS ball bearing structure according to an embodiment of the present invention;
the marks in the figure:
100-base; 200-focusing assembly; 300-an anti-shake assembly; 400-outer cover; 500-Z axis position sensor IC chip; a 600-X axis position sensor IC chip; 700-Y axis position sensor IC chip; 210-AF movable part; 220-AF magnet; 230-AF guide post; 240-weld; 250-cover plate; 260-cushioning member; 310-OIS soft board; 320-OIS coil; 330-OIS movable section; 340-pins; 211-AF frame; 212-AF coils; 213-AF soft board; 331-a lens base; 332-OIS magnet; 333-OIS ball bearing; 334-balls; 335-ball portions; 2131—extensions.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention; the technical features designed in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other; all other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center," "lateral," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or components referred to must have a specific orientation or be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more. In addition, the term "comprising" and any variations thereof are meant to be "at least inclusive".
To achieve at least one of the advantages and other advantages, an embodiment of the present invention provides an anti-shake motor that is resistant to magnetic interference. As shown in fig. 1 and 2, the anti-shake motor of the anti-magnetic interference includes: a base 100, a focusing assembly 200, and an anti-shake assembly 300. The whole base 100 is a U-shaped frame with a periphery provided with coils or magnets, the focusing assembly 200 and the anti-shake assembly 300 are arranged in the base 100, and the anti-shake assembly 300 is arranged in the focusing assembly.
Referring to fig. 3 in conjunction with fig. 2, as shown in the drawing, the focusing assembly 200 includes an AF movable part 210 and two AF magnets 220, the AF movable part 210 including an AF frame 211, two AF coils 212, and an AF soft plate 213. The AF frame 211 is provided in the base 100, and the AF frame 211 is movable in the Z-axis direction in the base 100. Two coil grooves are formed in two adjacent peripheral edges of the outer side of the AF frame 211, and two AF coils 212 are attached to the coil grooves. An AF flexible board 213 is attached to the AF frame 211, and the AF flexible board 213 has a power supply line and a signal line therein, and the AF flexible board 213 is electrically connected to the two AF coils 212. Two AF magnets 220 are fixed on the periphery of the base 100 at positions corresponding to the two AF coils 212. Preferably, two AF coils 212 are arranged in series with each other to balance the magnetic field and increase the magnetic field strength.
In practice, by disposing the AF coil 212 on the AF frame 211 while the AF magnet 220 is fixed on the periphery of the base 100, magnetism is not generated when the AF coil 212 is not turned on in a normal state. When anti-shake operation is needed, the AF coil 212 is conducted to generate magnetism, and the magnetism generated by the characteristics of the coil is very small and almost negligible with the magnetism interference between other motors or metal components on the periphery, so that the problem of magnetic interference is fundamentally reduced, and the anti-shake effect is improved.
The focusing assembly 200 further includes at least two AF guide posts 230, the two AF guide posts 230 are oppositely disposed on opposite corners of the periphery of the AF frame 211, the two AF guide posts 230 penetrate through the AF frame 211 and are slidably connected with the AF frame 211, and bottom ends of the AF guide posts 230 are propped against the base 100.
In particular, when the AF flexible board 213 transmits power and signals to the AF coils 212, the two AF coils 212 are turned on and generate magnetism to interact with the AF magnet 220, so that the AF coils 212 push the AF frame 211 to move along the AF guide post 230, and the focusing assembly 200 performs focusing action along the Z axis as a whole. The AF guide post 230 provides a long-distance stable guiding stroke for the AF frame 211, so that the whole lens has the function of super-close shooting.
Preferably, a Z-axis position sensor IC chip 500 is provided inside the AF coil 212, the Z-axis position sensor IC chip 500 being attached to the AF soft board 213, the Z-axis position sensor IC chip 500 being electrically connected to the AF soft board 213 for detecting and controlling the focusing action of the AF frame 211.
In some preferred embodiments, as shown in fig. 4, extension portions 2131 are provided at both ends of the AF soft plate 213, and the end portions of the extension portions 2131 extend to form soldering portions 240, and the soldering portions 240 are connected to the base 100, so as to connect power lines and signal lines of components such as the AF coil 212 and the Z-axis position sensor IC chip 500 to the base 100.
In particular, when the AF flexible board 213 transmits power and signals to the AF coils 212, the two AF coils 212 are turned on and generate magnetism to interact with the AF magnet 220, so that the AF coils 212 push the AF frame 211 to move along the AF guide post 230, and the focusing assembly 200 performs focusing action along the Z axis as a whole. At this time, the extension 2131 deforms to ensure that the power lines and the signal lines of the components such as the AF coil 212 and the Z-axis position sensor IC chip 500 can normally communicate with the base 100.
In some preferred embodiments, the focusing assembly 200 further includes a cover plate 250, the cover plate 250 being disposed on the AF frame 211, and a plurality of buffers 260 being disposed on the cover plate 250. In particular, the cover plate 250 is fixed to the AF frame 211, and the buffer 260 can provide a buffering force for focusing movement of the AF frame 211 along the Z axis, so as to prevent hard impact between the AF frame 211 and the cover plate 260.
Referring to fig. 5 in conjunction with fig. 2, as shown in the drawing, the anti-shake assembly 300 includes an OIS flexible board 310, two OIS coils 320 and an OIS movable portion 330, the OIS flexible board 310 is attached to the base 100, and the ends of the OIS flexible board extend downward out of the base 100 to form pins 340, the two OIS coils 320 are connected in series and adjacent to each other and fixed on the periphery of the base 100 away from the two AF magnets 220, and the two OIS coils 320 are electrically connected with the OIS flexible board 310.
The OIS movable portion 330 includes a lens holder 331 and two OIS magnets 332, the lens holder 331 is disposed in the AF frame 211, a magnet groove is disposed at a position corresponding to the two OIS coils 320 on the outer side of the periphery of the lens holder 331, and the two OIS magnets 332 are fixed in the magnet groove. Preferably, the two OIS magnets 332 are monopolar magnets.
In some preferred embodiments, the OIS movable portion 330 further includes OIS ball bearings 333 and a plurality of balls 334, as shown in fig. 5, the OIS ball bearings 333 are disposed between the lens holder 331 and the AF frame 211. The OIS ball housing 333 has ball portions 335 provided at four corners thereof, and ball grooves for accommodating the balls 334 are provided on both upper and lower surfaces of the ball portions 335. Preferably, the balls 334 protrude from the ball grooves when the plurality of balls 334 are placed in the ball grooves.
Ball grooves are formed in the lower ends of the four corners of the lens base 331 corresponding to the ball portions 335, and ball grooves are formed in the AF frame 211 corresponding to the ball portions 335. In particular, a plurality of balls 334 are placed in the ball grooves on the upper and lower surfaces of the ball portion 335, the balls 334 protrude from the ball grooves when placed in the ball grooves, and the balls 334 are respectively connected with the ball grooves at the lower ends of the four corners of the lens holder 331 and the ball grooves in the AF frame 211 in a rolling manner, wherein one layer of balls 334 moves along the X axis through the ball grooves, and the other layer of balls 334 moves along the Y axis through the ball grooves.
When the OIS coil 320 is turned on to generate magnetism, the OIS magnet 332 interacts with the magnetic pole, so that the OIS magnet 332 pushes the lens base 331 to perform anti-shake motion in the X-axis and Y-axis directions through the upper and lower double-layer balls of the OIS ball bearing 333, thereby achieving the anti-shake purpose. Preferably, there are 8 balls 334.
In some preferred embodiments, an X-axis position sensor IC chip 600 and a Y-axis position sensor IC chip 700 are respectively disposed inside the two OIS coils 320, the X-axis position sensor IC chip 600 and the Y-axis position sensor IC chip 700 are attached to the OIS flexible board 310, and the X-axis position sensor IC chip 600 and the Y-axis position sensor IC chip 700 are respectively electrically connected to the OIS flexible board 310 for detecting and controlling an X-axis movement stroke and a Y-axis movement stroke of the mirror base 331, respectively.
In some preferred embodiments, the anti-shake motor that resists magnetic interference further includes an outer cover 400. In practice, the outer cover 400 is covered on the base 100.
In summary, compared with the prior art, the anti-shake motor with anti-magnetic interference provided by the invention adopts the AF static magnetic structure on the AF driving layer, namely, the AF coil is fixed on the AF frame as a moving part, and the magnet is fixed on the base as a fixed part, so that the magnetic interference among the anti-shake motors in a plurality of camera modules or the influence of peripheral metal components on the motors is avoided, and the anti-shake effect is further improved.
In addition, it should be understood by those skilled in the art that although many problems exist in the prior art, each embodiment or technical solution of the present invention may be modified in only one or several respects, without having to solve all technical problems listed in the prior art or the background art at the same time. Those skilled in the art will understand that nothing in one claim should be taken as a limitation on that claim.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (2)
1. An anti-shake motor of anti-magnetic interference, its characterized in that: the anti-shake focusing device comprises a base, a focusing assembly and an anti-shake assembly, wherein the focusing assembly and the anti-shake assembly are arranged in the base, and the focusing assembly is of a static magnetic type architecture;
the focusing assembly comprises an AF movable part and two AF magnets, the AF movable part comprises an AF frame, two AF coils and an AF soft board, the AF frame is movably arranged in the base, the two AF coils are fixed on the outer side of the periphery of the AF frame, the AF soft board is arranged on the AF frame, the AF soft board is electrically connected with the two AF coils, the two AF magnets are fixed on the periphery of the base, the setting positions of the AF soft board correspond to the two AF coils, and the two AF coils and the two AF magnets are subjected to relative motion after being electrified to drive the AF frame to move;
the anti-shake assembly comprises an OIS soft board, two OIS coils and an OIS movable part, wherein the OIS soft board is attached to the base, the tail end of the OIS soft board extends downwards out of the base to form a pin, the two OIS coils are fixed on the base, and the two OIS coils are electrically connected with the OIS soft board;
the OIS movable part comprises a lens seat and two OIS magnets, the lens seat is arranged in the AF frame, and the two OIS magnets are fixed at positions corresponding to the two OIS coils outside the periphery of the lens seat;
the OIS movable part further comprises an OIS ball bearing seat and a plurality of balls, the OIS ball bearing seat is arranged between the mirror seat and the AF frame, ball parts are arranged at four corners of the OIS ball bearing seat, ball grooves for accommodating the balls are formed in the upper surface and the lower surface of each ball part, the positions, corresponding to the ball parts, of the lower section of the mirror seat are provided with ball grooves, the positions, corresponding to the ball parts, of the AF frame are provided with ball grooves, a plurality of balls protrude out of the notch when being placed in the ball grooves, the OIS ball bearing seat is movably connected with the mirror seat and the AF frame through the balls, the number of the OIS balls is 8, and after two OIS coils are electrified, the two OIS coils and the two OIS magnets relatively move to drive the mirror seat to move;
the focusing assembly further comprises at least two AF guide posts, wherein the two AF guide posts are arranged on the opposite corners of the periphery of the AF frame, the two AF guide posts are movably connected with the AF frame, and the two AF guide posts penetrate through the AF frame and are connected with the base;
extension parts are arranged at two ends of the AF soft board, the tail ends of the extension parts extend to form welding parts, and the AF soft board is connected to the base through the welding parts;
the focusing assembly further comprises a cover plate, the cover plate is arranged on the AF frame, and a plurality of buffer pieces are arranged on the cover plate;
the AF soft board is electrically connected with the OIS soft board through the welding part;
the anti-shake motor with magnetic interference resistance further comprises an outer cover, and the outer cover is covered on the base.
2. A camera module, its characterized in that: an anti-shake motor comprising at least one anti-magnetic interference according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410039200.1A CN117560557B (en) | 2024-01-11 | 2024-01-11 | Anti-shake motor of anti-magnetic interference and camera module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410039200.1A CN117560557B (en) | 2024-01-11 | 2024-01-11 | Anti-shake motor of anti-magnetic interference and camera module |
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| Publication Number | Publication Date |
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| CN117560557A CN117560557A (en) | 2024-02-13 |
| CN117560557B true CN117560557B (en) | 2024-04-05 |
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| CN202410039200.1A Active CN117560557B (en) | 2024-01-11 | 2024-01-11 | Anti-shake motor of anti-magnetic interference and camera module |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118068508A (en) * | 2024-04-22 | 2024-05-24 | 厦门市众惠微电子有限公司 | Two-axis optical actuating module based on roller and camera module |
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| Publication number | Publication date |
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| CN117560557A (en) | 2024-02-13 |
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