CN113014821A - Camera module, electronic equipment and camera module shake compensation method - Google Patents
Camera module, electronic equipment and camera module shake compensation method Download PDFInfo
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- CN113014821A CN113014821A CN202110305407.5A CN202110305407A CN113014821A CN 113014821 A CN113014821 A CN 113014821A CN 202110305407 A CN202110305407 A CN 202110305407A CN 113014821 A CN113014821 A CN 113014821A
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- moving part
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- 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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- 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
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- 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
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
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- Signal Processing (AREA)
- Adjustment Of Camera Lenses (AREA)
- Studio Devices (AREA)
Abstract
The application discloses module, electronic equipment and the shake compensation method of module of making a video recording, the module of making a video recording includes: the first side of the base is provided with a first matching part; the anti-shake moving part is arranged on the first side of the base, a second matching part matched with the first matching part is arranged on the first side of the anti-shake moving part, the second matching part is movably connected with the first matching part, and an installation cavity is arranged in the anti-shake moving part; the lens assembly is arranged in the mounting cavity and synchronously moves with the anti-shake moving part; the magnetic part is arranged on one of the base and the anti-shake moving part; and the electromagnetic coil is arranged on the other one of the base and the anti-shake moving part. This application is through setting up first cooperation portion on the base, and the anti-shake moving part is mobile on first cooperation portion to through the magnetic force change between control anti-shake moving part and the base, the drive anti-shake moving part moves about on the base, realizes the compensation to the shake amount of lens subassembly.
Description
Technical Field
The application belongs to the technical field of electronic equipment, and particularly relates to a camera module, electronic equipment and a camera module shake compensation method.
Background
When a mobile phone user holds the smart phone to take a picture or take a video, the shake of the hand can cause the slight inclination of the camera, the inclination causes the change of the observation angle of the lens, the image is always in an unstable state along with the shake of the hand, and the shooting quality is reduced. Although the anti-shake function has basically been increased on current cell-phone camera, but current anti-shake scope is little, and the anti-shake angle is not nimble enough and for a long time use the back, and frictional force can increase gradually between suspension and the frame, can reduce anti-shake reaction rate, can't satisfy user's user demand.
Disclosure of Invention
The embodiment of the application aims to provide a camera module, an electronic device and a shake compensation method of the camera module, and the technical problems that in the prior art, the anti-shake range is small and the reaction is inflexible can be solved.
In order to solve the technical problem, the present application is implemented as follows:
the first aspect of the present application provides a camera module, including: the first side of the base is provided with a first matching part; the anti-shake moving part is arranged on the first side of the base, a second matching part matched with the first matching part is arranged on the first side of the anti-shake moving part, the second matching part is movably connected with the first matching part, and an installation cavity is arranged in the anti-shake moving part; the lens assembly is arranged in the mounting cavity and synchronously moves with the anti-shake moving part; the magnetic part is arranged on one of the base and the anti-shake moving part; the electromagnetic coil is arranged on the other one of the base and the anti-shake moving part, the position of the electromagnetic coil corresponds to that of the magnetic part, and the electromagnetic coil drives the anti-shake moving part to move relative to the base in a power-on state so as to perform motion compensation on the lens assembly.
In a second aspect of the present application, a shake compensation method applied to the camera module described in the above embodiments is provided, including:
acquiring jitter information when the lens assembly jitters;
calculating jitter compensation quantity according to the jitter information;
calculating current parameters led into each electromagnetic coil according to the jitter compensation quantity;
and transmitting the current corresponding to each calculated current parameter to the corresponding electromagnetic coil, so that a magnetic action is generated between the electromagnetic coil and the corresponding magnetic part, and the anti-shake movable part is driven to move relative to the base so as to perform motion compensation on the lens assembly.
In a third aspect of the present application, there is provided an electronic apparatus including the camera module described in any one of the above.
In this application embodiment, through being provided with first cooperation portion on the first side of base, be provided with the second cooperation portion with first cooperation portion complex on the anti-shake moving part, the anti-shake moving part can move about on the base. The movement of the anti-shake moving part on the base is adjusted by controlling the magnetic force change between the anti-shake moving part and the base, so that the shooting angle of the lens assembly is adjusted. Along with the slow change of magnetic force between base and the anti-shake moving part, correct the shake amount that the lens subassembly produced, can realize carrying out the anti-shake to the shooting overall process. The camera module of this application can realize arbitrary angle anti-shake, and utensil anti-shake effect is better and the shooting quality is higher.
Drawings
Fig. 1 is a schematic structural diagram of a camera module according to an embodiment of the invention;
FIG. 2 is a diagram illustrating a dithering structure of a camera module according to an embodiment of the present invention;
FIG. 3 is an exploded view of a camera module according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a lens assembly of a camera module according to an embodiment of the invention;
fig. 5 is a schematic structural view of an anti-shake movable member of a camera module according to an embodiment of the invention;
fig. 6 is a top view of the anti-shake movable member of the camera module according to the embodiment of the invention;
fig. 7 is a schematic structural diagram of a circular table of the camera module according to the embodiment of the invention;
FIG. 8 is a top view of a base of a camera module according to an embodiment of the present invention;
fig. 9 is a flowchart of a shake compensation method of a camera module according to an embodiment of the present invention.
Reference numerals:
a camera module 100;
a base 10; a convex ball 11; an electromagnetic coil 12;
an anti-shake moving member 20; an anti-shake movable piece body 21; a mounting cavity 211; a magnetic member 212;
a lens assembly 30;
a circular table 40; a ball groove 401;
a bracket 50; housing cavity 501.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The features of the terms first and second in the description and in the claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specified. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The following describes the image capturing module 100 according to the embodiment of the present application in detail through specific embodiments and application scenarios thereof with reference to the accompanying drawings.
As shown in fig. 1 to 8, the camera module 100 according to the embodiment of the invention includes a base 10, an anti-shake movable member 20, a lens assembly 30, a magnetic member 212, and an electromagnetic coil 12.
Specifically, the first mating portion is disposed on the first side of the base 10, and the anti-shake movable element 20 is disposed on the first side of the base 10. The first side of the anti-shake moving member 20 is provided with a second matching portion matching with the first matching portion, and the second matching portion is movably connected with the first matching portion. The anti-shake movable element 20 is provided with a mounting cavity 211, the lens assembly 30 is disposed in the mounting cavity 211, and the lens assembly 30 and the anti-shake movable element 20 move synchronously. The magnetic member 212 is disposed on one of the base 10 and the anti-shake moving member 20, the electromagnetic coil 12 is disposed on the other of the base 10 and the anti-shake moving member 20, and the position of the electromagnetic coil 12 corresponds to the position of the magnetic member 212. The electromagnetic coil 12, when energized, drives the anti-shake movable element 20 to move relative to the base 10 to compensate for movement of the lens assembly 30.
In other words, the camera module 100 according to the embodiment of the invention mainly comprises the base 10, the anti-shake moving element 20, the lens assembly 30, the magnetic element 212 and the electromagnetic coil 12. Referring to fig. 1 and 2, the base 10 is capable of supporting the anti-shake moving part 20 and the lens assembly 30, the anti-shake moving part 20 being disposed on a first side of the base 10. As shown in fig. 5, a mounting cavity 211 with an opening at one end is defined in the anti-shake moving part 20, the lens assembly 30 can be mounted into the mounting cavity 211 from the opening of the anti-shake moving part 20, and a shooting angle of the lens assembly 30 corresponds to the opening of the anti-shake moving part 20, and light can penetrate through the opening of the anti-shake moving part 20 and irradiate on the lens assembly 30 (as shown in fig. 1 and 4), so as to realize a shooting function of the lens assembly 30.
As shown in fig. 3, a first side of the anti-shake moveable member 20 is coupled to a first side of the base 10. The first side of the base 10 is provided with a first matching portion, and the first side of the anti-shake movable member 20 is provided with a second matching portion. The second matching portion is movably connected with the first matching portion, so that the anti-shake movable member 20 can move on the base 10 at any angle. When the anti-shake moving part 20 moves on the base 10, the lens assembly 30 can move synchronously with the anti-shake moving part 20.
On the anti-shake movable member 20 and the base 10, one of them is provided with an electromagnetic coil 12 (see fig. 8), and the other is provided with a magnetic member 212. The position of the electromagnetic coil 12 corresponds to the position of the magnetic member 212, and the position of the electromagnetic coil 12 and the magnetic member 212 are arranged in a floating manner under the action of electromagnetic force. When the electromagnetic coil 12 is energized, the magnetic field is changed by controlling the magnitude and direction of the current applied to the electromagnetic coil 12, and the corresponding magnetic member 212 is acted on by the magnetic force. After an acting force is generated between the anti-shake moving element 20 and the base 10, the anti-shake moving element 20 can be driven to move on the base 10, so that the anti-shake at any angle of the camera module 100 is realized.
When the mobile phone is used for taking a picture, the mobile phone can shake differently. Different acting forces can be generated between the anti-shake movable piece 20 and the base 10 by passing different current magnitudes and directions to the electromagnetic coil 12, and the anti-shake movable piece 20 can correspondingly rotate on the base 10. The anti-shake moving member 20 moves the lens assembly 30 synchronously to compensate for different amounts of shake generated by the lens assembly 30.
The magnetic force is slowly changed, and the lens assembly 30 can move stably along with the slow change of the magnetic force, so that the anti-shake of the lens assembly 30 in the whole shooting process is realized. The magnetic force between the base 10 and the anti-shake movable piece 20 has a hysteresis effect. When the current to the solenoid 12 returns to the initial value, the magnetic force applied to the anti-shake moving part 20 does not decrease directly to the initial value, but decreases slowly and gradually to the initial value. Further, the anti-shaking of the whole shooting process is ensured.
Thus, according to the image pickup module 100 of the embodiment of the present invention, the anti-shake movable element 20 can move on the base 10 by providing the first engagement portion on the first side of the base 10 and providing the second engagement portion on the anti-shake movable element 20 to engage with the first engagement portion. The magnetic force between the anti-shake moving member 20 and the base 10 is controlled to change, so that the anti-shake moving member 20 is adjusted to move on the base 10 in a corresponding direction, and the shooting angle of the lens assembly 30 is adjusted. Along with the slow change of the magnetic force between the base 10 and the anti-shake moving part 20, the shake amount generated by the lens assembly 30 is corrected, so that the anti-shake operation of the whole shooting process can be realized. The camera module 100 has the advantages of being good in anti-shake effect and high in shooting quality.
According to an embodiment of the present invention, the first engaging portion is a convex ball 11 protruding toward the anti-shake moving part 20 along the first side of the base 10, the second engaging portion is a ball groove 401 engaged with the convex ball 11, and the convex ball 11 is inserted into the ball groove 401 and is movable relative to the ball groove 401.
That is, as shown in fig. 3, 7 and 8, the first fitting portion may be provided as a convex ball 11, the convex ball 11 being provided on the first side of the base 10. The primary side of the base 10 is a side facing the anti-shake movable member 20, and a ball groove 401 (see fig. 7) is provided on the first side of the anti-shake movable member 20. The convex ball 11 can be inserted into the ball groove 401, and the anti-shake movable element 20 can rotate on the base 10 through 360 degrees of any degree of freedom in all directions through the convex ball 11. The anti-shake moving part 20 rotates on the convex ball 11, so that the shake quantity of the lens module is corrected, the anti-shake effect is improved, and the shooting quality is enhanced. By adopting a structure in which the convex balls 11 and the ball grooves 401 are matched, large-angle anti-shaking (anti-shaking of nearly +/-45 degrees) can be performed. Meanwhile, the friction force between the convex ball 11 and the ball groove 401 is small, so that the anti-shake moving part 20 can rotate on the base 10 more flexibly, and the anti-shake reaction speed is improved. Therefore, the spherical rolling design is adopted, the +/-45-degree anti-shaking can be realized, and the anti-shaking effect is improved. The base 10 and the anti-shake moving part 20 are arranged in a split manner, so that the problem of reaction delay caused by increase of moving resistance after long-term use can be avoided, the use quality is effectively guaranteed, and the use experience of a user is improved.
Optionally, the anti-shake moving part 20 includes an anti-shake moving part body 21 and a circular truncated cone 40. Be equipped with installation cavity 211 in the anti-shake moving part body 21, the first side of anti-shake moving part body 21 is close to base 10. The first side of the circular truncated cone 40 is connected with the first side of the anti-shake moving part body 21, the second side of the circular truncated cone 40 is provided with a ball groove 401, and the anti-shake moving part body 21 and the circular truncated cone 40 move synchronously.
That is, referring to fig. 2, 5 and 7, the anti-shake moving part body 21 is connected to the base 10 through the circular truncated cone 40, a mounting cavity 211 is defined in the anti-shake moving part body 21, and the lens assembly 30 is mounted in the mounting cavity 211. The circular truncated cone 40 can rotate on the convex ball 11 to drive the anti-shake moving part body 21 to rotate, and after the lens assembly 30 synchronously rotates, the shake amount of the lens assembly 30 is compensated.
According to an embodiment of the present invention, the anti-shake moving part body 21 is hemispherical, the first side of the anti-shake moving part body 21 is a plane, the circular truncated cone 40 is coaxially disposed with the anti-shake moving part body 21, and the spherical groove 401 is disposed at a central position of the circular truncated cone 40.
Specifically, as shown in fig. 5 and 6, an installation cavity 211 with an open upper end is defined inside the anti-shake moving element body 21, and the outer peripheral surface of the anti-shake moving element body 21 is an arc surface. Through setting up anti-shake moving part body 21 to one end open-ended hemisphere, can reduce the volume, and be convenient for install. The circular truncated cone 40 is formed in an axially symmetric shape as a whole and is disposed coaxially with the anti-shake movable element body 21. The ball groove 401 is located at the center of the circular truncated cone 40, so that when the circular truncated cone 40 is placed on the base 10, the connection between the convex ball 11 and the ball groove 401 is more stable, and the anti-shake moving part body 21 cannot deflect due to the asymmetry of the structure of the circular truncated cone 40.
Optionally, the electromagnetic coil 12 is disposed on the first side of the base 10 and located at the periphery of the first matching portion, and the magnetic element 212 is disposed on the first side of the anti-shake movable element 20 and located at the periphery of the second matching portion. The electromagnetic coil 12 is provided at the outer periphery of the first fitting portion without contacting the first fitting portion. The magnetic member 212 is disposed at the outer periphery of the second fitting portion and does not contact the second fitting portion. The anti-shake movable element 20 is connected to the base 10 via a first mating portion and a second mating portion, and the magnetic element 212 is suspended from the electromagnetic coil 12.
Preferably, as shown in fig. 5, 6 and 8, the number of the electromagnetic coils 12 is at least two, the at least two electromagnetic coils 12 are arranged on the base 10 at intervals along the circumferential direction of the first matching portion, the number of the magnetic members 212 is at least two, and the at least two magnetic members 212 are arranged at intervals on the first side of the anti-shake movable member 20 and are respectively arranged in one-to-one correspondence with the plurality of electromagnetic coils 12.
That is, the number of the electromagnetic coil 12 and the magnetic member 212 is at least two, and the number of the electromagnetic coil 12 and the magnetic member 212 may be plural. By providing a plurality of electromagnetic coils 12 (see fig. 8) on the base 10 in the circumferential direction of the first fitting portion, the plurality of electromagnetic coils 12 are provided at intervals. The distance of interval can be the same between a plurality of solenoid 12, through the periphery with a plurality of solenoid 12 even encircles at first cooperation portion, is convenient for control the turned angle of anti-shake moving part 20. A plurality of magnetic members 212 (see fig. 5) corresponding to the plurality of electromagnetic coils 12 one to one are disposed on the first side of the anti-shake movable member 20, and the plurality of magnetic members 212 are disposed at intervals in the circumferential direction of the second fitting portion. Each electromagnetic coil 12 corresponds to one magnetic element 212, and when the electromagnetic coils 12 located at different positions are energized, the corresponding magnetic elements 212 are acted by magnetic force, and the anti-shake movable element 20 can perform corresponding activities to compensate the shake amount of the lens assembly 30. Optionally, the plurality of electromagnetic coils 12 and the magnetic member 212 may be magnetically attracted in a star shape on the base 10 and the anti-shake moving member 20, respectively, so as to achieve anti-shake with any degree of freedom.
In some embodiments of the invention, the electromagnetic coil 12 is embedded in the base 10, the electromagnetic coil 12 does not extend beyond the first side of the base 10, the magnetic member 212 is embedded in the anti-shake movable member 20, and the electromagnetic coil 12 and the magnetic member 212 are spaced apart from each other. The electromagnetic coil 12 is not in contact with the anti-shake movable element 20 at the position where the magnetic element 212 is provided on the base 10. The magnetic member 212 and the electromagnetic coil 12 are suspended so that the anti-shake movable member 20 can perform corresponding activities after a magnetic force is generated between the anti-shake movable member 20 and the base 10.
According to an embodiment of the present invention, the magnetic member 212 may employ a permanent magnet. The weight of each magnetic member 212 is different. By providing magnetic members 212 of different weights, each magnetic member 212 can have a different magnetic force, facilitating adjustment of the position of the anti-shake moving member 20.
According to an embodiment of the present invention, as shown in fig. 1 to 3, the camera module 100 further includes a bracket 50, the bracket 50 is provided with a receiving cavity 501 penetrating in a thickness direction thereof, and the bracket 50 is arranged spaced apart from the base 10. The second side of the anti-shake moving part 20 is movably disposed in the accommodating cavity 501, the outer wall surface of the anti-shake moving part 20 is spherical, and the accommodating cavity 501 corresponds to the outer wall surface of the anti-shake moving part 20 in shape.
That is, as shown in fig. 3, the camera module 100 further includes a bracket 50, the bracket 50 may be a cylinder or other polyhedron, and the bracket 50 may be fixed on the battery cover or the middle frame by injection molding, punching, milling, or the like. The support 50 defines an accommodating cavity 501 (see fig. 2) with an upper opening and a lower opening therein, the support 50 is sleeved on the periphery of the anti-shake movable element 20, and the support 50 is not in contact with the base 10. The inner wall surface of the bracket 50 and the outer wall surface of the anti-shake movable element 20 have the same shape, and are both spherical, and the anti-shake movable element 20 can roll in the bracket 50. Through establish support 50 on the periphery of anti-shake moving part 20, play support and spacing effect to anti-shake moving part 20, can not take place the skew because of anti-shake moving part 20 when carrying out the rotation on base 10.
It should be noted that the camera module 100 according to the present application realizes anti-shake with an arbitrary degree of freedom by using a double spherical surface rolling. Wherein, the double spherical surfaces roll, firstly, the anti-shake movable element 20 can rotate on the base 10 through the cooperation of the convex ball 11 and the ball groove 401. Secondly, through the arrangement of the accommodating cavity 501 in the bracket 50, the anti-shake movable element 20 can rotate in the accommodating cavity 501 in the bracket 50. The anti-shake moving part 20 is spherical, and the base 10 is provided with the convex ball 11, so that double-spherical rolling is realized. The anti-shake design of this application not only can be used to mobile terminal's camera anti-shake, can also be applied to on-vehicle anti-shake to and the buffering in fields such as robot, take precautions against earthquakes etc..
In summary, according to the camera module 100 of the embodiment of the present invention, the base 10 and the anti-shake moving element 20 are separately arranged, and a double-spherical rolling design is adopted, so that the problems of resistance increase, reaction delay, and the like of the anti-shake moving element 20 caused by long-term use can be effectively avoided. The lens assembly 30 can be anti-shake by nearly + -45 degrees by the design of the convex balls 11 and the ball grooves 401. The utility model provides a module 100 of making a video recording has that the anti-shake effect is better, the anti-shake scope is big and the higher advantage of shooting quality. Moreover, the camera module 100 of the present application has low manufacturing cost, small size and high realizability, and is favorable for realizing the light and thin design of the whole machine.
The following describes in detail a shake compensation method for an image capturing module according to an embodiment of the present application with reference to the accompanying drawings.
The shake compensation method of the camera module according to the embodiment of the invention comprises the following steps:
s1, acquiring the shake information when the lens assembly 30 shakes.
S2, a shake compensation amount is calculated based on the shake information.
And S3, calculating current parameters of each electromagnetic coil 12 according to the jitter compensation amount.
And S4, transmitting the current corresponding to each calculated current parameter to the corresponding electromagnetic coil 12, so as to generate a magnetic force action between the electromagnetic coil 12 and the corresponding magnetic element 212, and driving the anti-shake movable element 20 to move relative to the base 10, so as to perform motion compensation on the lens assembly 30.
Specifically, as shown in fig. 9, according to the shake compensation method of the embodiment of the present invention, first, when the lens assembly 30 shakes, the electronic device can acquire shake information when the lens assembly 30 shakes. The electronic apparatus can calculate the shake compensation amount from the shake information generated when the lens assembly 30 shakes.
The amount of jitter compensation is then converted to current parameters to each solenoid 12, including current magnitude and current direction.
Finally, according to the calculated current parameters, the electronic device passes the current parameters of each electromagnetic coil 12 to the corresponding electromagnetic coil 12. After the current with the corresponding current parameter is introduced into the electromagnetic coil 12, the corresponding magnetic field changes, so that a magnetic force action is generated between the electromagnetic coil 12 and the corresponding magnetic member 212. The anti-shake movable element 20 moves relative to the base 10 under the action of magnetic force, and the anti-shake movable element 20 drives the lens assembly 30 to move synchronously, so as to correct the position of the lens assembly 30.
It should be noted that the specific anti-shake process of the present application is:
taking an electronic device as an example of a mobile phone, a camera module 100 and a control chip are built in a PCB of the mobile phone. The control chip comprises a gyroscope chip, an anti-shake processing chip, a power management chip and the like. When the mobile phone is in a non-shooting state, the anti-shake movable piece 20 is in a non-powered state. The outer wall surface of the anti-shake moving element body 21 contacts the inner wall surface of the bracket 50, the convex ball 11 contacts the ball groove 401, and the bracket 50 and the convex ball 11 support and fix the anti-shake moving element 20.
When the photographing function of the mobile phone is turned on, the power management chip supplies current to the electromagnetic coil 12 and causes the magnetic field to change. The magnetic member 212 drives the anti-shake moving member 20 to move under the action of magnetic force, so that the shooting angle of the camera is parallel to the ground. Meanwhile, the gyroscope can acquire shaking information of the lens assembly 30 during shaking in real time and feed the shaking information back to the anti-shaking processing chip, and the anti-shaking processing chip calculates shaking compensation amount according to the shaking information. The anti-shake processing chip may calculate the shake compensation amount as a current having a corresponding current parameter to each solenoid 12 and transmit it to the power management chip. The power management chip transmits a current having a corresponding current parameter to the corresponding electromagnetic coil 12. The current parameters comprise the magnitude and direction of the current, and the jitter information can be latitudinal and longitudinal displacement, elevation, rotation angle and the like.
The electromagnetic coil 12 generates a magnetic field change under the action of the current, and the magnetic member 212 corresponding to the electromagnetic coil 12 drives the anti-shake movable member 20 and the lens assembly 30 to move under the action of the magnetic force so as to correct the position of the lens assembly 30. When current passes through the electromagnetic coils 12, the current in each electromagnetic coil 12 is restored to the original state. Due to the influence of the hysteresis effect, when the current in each of the electromagnetic coils 12 is restored to the initial state, the magnetic force applied to the lens assembly 30 is not directly reduced to the initial state, but is gradually reduced to the initial value. When the magnetic force is slowly changed, the lens assembly 30 is slowly moved. Finally, when the magnetic force between the electromagnetic coil 12 and the magnetic member 212 disappears, the lens assembly 30 returns to the original position, so as to achieve the anti-shake of the camera module 100 in the whole process. The gyroscope acquires the shaking information of the lens assembly 30 during shaking in real time, and if the lens assembly 30 is detected to continue shaking after the magnetic force between the electromagnetic coil 12 and the magnetic piece 212 disappears, the shaking information is fed back to the anti-shaking processing chip again, and the shaking compensation amount is calculated again. If the lens assembly 30 is not detected to shake after the magnetic force between the electromagnetic coil 12 and the magnetic member 212 disappears, the photographing is completed.
In summary, according to the shake compensation method of the camera module in the embodiment of the present invention, the calculated current parameter is transmitted to the corresponding electromagnetic coil 12, so that the magnetic force between the anti-shake moving element 20 and the base 10 can be controlled to change, and the anti-shake moving element 20 is adjusted to move on the base 10 in the corresponding direction, thereby adjusting the shooting angle of the lens assembly 30. Along with the slow change of the magnetic force between the base 10 and the anti-shake moving part 20, the shake amount generated by the lens assembly 30 is corrected, so that the anti-shake of the whole shooting process can be realized. The shake compensation method can achieve a good anti-shake effect, and can avoid the problem of reaction delay caused by increase of moving resistance between the anti-shake moving part 20 and the base 10 after long-term use, so that the use quality is effectively guaranteed, and the use experience of a user is improved.
The invention further provides an electronic device, which comprises the camera module 100 in the embodiment. When the electronic device shakes during the photographing process, the gyroscope acquires shaking information of the lens assembly 30 during shaking, the shaking information is fed back to the anti-shaking processing chip, and the anti-shaking processing chip calculates shaking compensation amount according to the shaking information. The amount of jitter compensation is calculated as a parameter of the current to each solenoid 12 and communicated to the power management chip. The power management chip transmits the current parameters to the corresponding electromagnetic coils 12, and after the magnetic field changes, the corresponding magnetic members 212 are acted by the magnetic force to drive the anti-shake moving members 20 and the lens assembly 30 to move so as to correct the position of the lens assembly 30. The electronic equipment has the advantages of better anti-shake effect, large anti-shake range and higher shooting quality.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (11)
1. The utility model provides a module of making a video recording which characterized in that includes:
the first side of the base is provided with a first matching part;
the anti-shake moving part is arranged on the first side of the base, a second matching part matched with the first matching part is arranged on the first side of the anti-shake moving part, the second matching part is movably connected with the first matching part, and an installation cavity is arranged in the anti-shake moving part;
the lens assembly is arranged in the mounting cavity and synchronously moves with the anti-shake moving part;
the magnetic part is arranged on one of the base and the anti-shake moving part;
the electromagnetic coil is arranged on the other one of the base and the anti-shake moving part, the position of the electromagnetic coil corresponds to that of the magnetic part, and the electromagnetic coil drives the anti-shake moving part to move relative to the base in a power-on state so as to perform motion compensation on the lens assembly.
2. The camera module of claim 1, wherein the first engaging portion is a convex ball protruding toward the anti-shake movable member along the first side of the base, and the second engaging portion is a ball groove engaged with the convex ball, and the convex ball is inserted into the ball groove and is movable relative to the ball groove.
3. The camera module of claim 2, wherein the anti-shake movable member comprises:
the anti-shake moving part comprises an anti-shake moving part body, wherein the installation cavity is arranged in the anti-shake moving part body, and the first side of the anti-shake moving part body is close to the base;
the first side of the round platform is connected with the first side of the anti-shaking moving part body, the second side of the round platform is provided with the ball groove, and the anti-shaking moving part body and the round platform move synchronously.
4. The camera module according to claim 3, wherein the anti-shake movable element body is hemispherical, the first side of the anti-shake movable element body is a plane, the circular truncated cone is coaxial with the anti-shake movable element body, and the spherical groove is formed in a center of the circular truncated cone.
5. The camera module according to claim 1, wherein the electromagnetic coil is disposed on the first side of the base and located at an outer periphery of the first engaging portion, and the magnetic member is disposed on the first side of the anti-shake movable member and located at an outer periphery of the second engaging portion.
6. The camera module according to claim 5, wherein the number of the electromagnetic coils is at least two, at least two of the electromagnetic coils are arranged on the base at intervals along a circumferential direction of the first matching portion, the number of the magnetic members is at least two, and at least two of the magnetic members are arranged at intervals on the first side of the anti-shake movable member and are respectively arranged in one-to-one correspondence with the plurality of the electromagnetic coils.
7. The camera module of claim 6, wherein the electromagnetic coil is embedded in the base, the magnetic member is embedded in the anti-shake movable member, and the electromagnetic coil and the magnetic member are spaced apart from each other.
8. The camera module of claim 6, wherein each of the magnetic members has a different weight.
9. The camera module of claim 1, further comprising: the anti-shake movable piece comprises a base, a support and an anti-shake movable piece, wherein the support is provided with an accommodating cavity which is communicated along the thickness direction of the support, the support is spaced from the base, and the second side of the anti-shake movable piece is movably arranged in the accommodating cavity;
the outer wall surface of the anti-shake moving part is spherical, and the accommodating cavity corresponds to the outer wall surface of the anti-shake moving part in shape.
10. A shake compensation method applied to a camera module according to any one of claims 1 to 9, comprising:
acquiring jitter information when the lens assembly jitters;
calculating jitter compensation quantity according to the jitter information;
calculating current parameters led into each electromagnetic coil according to the jitter compensation quantity;
and transmitting the current corresponding to each calculated current parameter to the corresponding electromagnetic coil, so that a magnetic action is generated between the electromagnetic coil and the corresponding magnetic part, and the anti-shake movable part is driven to move relative to the base so as to perform motion compensation on the lens assembly.
11. An electronic device comprising the camera module of any one of claims 1-9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110305407.5A CN113014821A (en) | 2021-03-22 | 2021-03-22 | Camera module, electronic equipment and camera module shake compensation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110305407.5A CN113014821A (en) | 2021-03-22 | 2021-03-22 | Camera module, electronic equipment and camera module shake compensation method |
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| CN113014821A true CN113014821A (en) | 2021-06-22 |
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| CN202110305407.5A Pending CN113014821A (en) | 2021-03-22 | 2021-03-22 | Camera module, electronic equipment and camera module shake compensation method |
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| CN114945073A (en) * | 2022-05-27 | 2022-08-26 | 维沃移动通信有限公司 | Imaging device and electronic apparatus |
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