CN116762350A - Camera module and terminal equipment - Google Patents
Camera module and terminal equipment Download PDFInfo
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- CN116762350A CN116762350A CN202280009173.2A CN202280009173A CN116762350A CN 116762350 A CN116762350 A CN 116762350A CN 202280009173 A CN202280009173 A CN 202280009173A CN 116762350 A CN116762350 A CN 116762350A
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- lens
- magnet
- lens carrier
- electromagnetic damping
- motor
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Classifications
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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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
- H02K33/02—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
-
- 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
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Lens Barrels (AREA)
Abstract
The invention discloses a camera module and terminal equipment. The image pickup module comprises an optical lens, a lens carrier for carrying the optical lens, a photosensitive component and a lens driving motor, wherein the photosensitive component is positioned on the image side of the optical lens along the optical axis of the optical lens. The lens driving motor includes a driving assembly and an electromagnetic damping assembly. The driving assembly comprises a first magnet component and an energizable coil, and is used for driving the lens carrier to move together with the optical lens carried by the lens carrier. The electromagnetic damping assembly includes a stator and a mover movable relative to the stator, the stator and mover configured to provide an electromagnetic damping force that resists movement of the lens carrier along with an optical lens carried thereby by the lens carrier by relative movement to each other. The lens carrier includes a coil mounting portion for fixing the energizable coil and a mover mounting portion for fixing the mover. According to the invention, the electrified coil and the mover are arranged on the lens carrier, so that the rapid and stable focusing can be realized under the condition of not increasing the driving load of the motor, and the damping effect is stable and is not influenced by external environment.
Description
The present invention relates to the field of optical imaging, and in particular, to a camera module and a terminal device having the camera module.
With the popularity of mobile electronic devices, technologies related to camera modules (for capturing images, such as video or images) applied to mobile electronic devices have been rapidly developed and advanced. In recent years, camera modules have been widely used in various fields such as medical treatment, security, industrial production, and the like. In order to meet the increasingly wide market demands, the characteristics of high pixels, high frame rate, quick focusing and the like of the camera module are all irreversible development trends of the existing camera module.
In the focusing process, the optical lens of the camera module moves under the drive of electromagnetic force, the code value of the clearest position is locked by comparing the brightness difference of two adjacent positions, and then the optical lens is pulled back to the position corresponding to the code value. At this point, the optical lens should rest in this position as quickly as possible. However, due to the mechanical structure limitation, small oscillation of the optical lens is unavoidable, and the increase of the focusing speed is limited.
In addition, as the photographing requirements of mobile terminal equipment such as mobile phones and the like are improved, the pixels of the optical lenses are higher, the size is larger, the quality is heavier, the requirements on the thrust of a motor are higher, and the focusing speed of a photographing module is higher. Therefore, it is particularly important to solve the problem of quick focusing.
Disclosure of Invention
Therefore, an object of the present invention is to provide an image pickup module and a terminal device having the same, which integrate an electromagnetic damping assembly in a motor, and can provide a damping force that impedes movement of a lens carrier by a cooperation of a mover and a stator of the electromagnetic damping assembly without increasing a driving load of the motor by mounting an energizing coil and the mover on the lens carrier, thereby achieving a rapid and stable focusing of the image pickup module with a stable damping effect and without being affected by an external environment.
In order to achieve the above object, a first aspect of the present invention provides an image pickup module including an optical lens, a lens carrier for carrying the optical lens, a photosensitive assembly located on an image side of the optical lens along an optical axis of the optical lens, and a lens driving motor, wherein the lens driving motor includes:
a driving assembly comprising a first magnet part and an energizable coil arranged opposite to the first magnet part for driving the lens carrier to move together with the optical lens carried by the lens carrier, and
an electromagnetic damping assembly comprising a stator and a mover movable relative to the stator, wherein the stator and the mover are configured to provide an electromagnetic damping force by relative movement to each other, which electromagnetic damping force resists movement of the lens carrier along with an optical lens carried thereby,
The lens carrier comprises a coil mounting part for fixing an energizable coil of the driving assembly and a rotor mounting part for fixing a rotor of the electromagnetic damping assembly. Therefore, the lens carrier is driven to move through the energizable coil, and then the mover of the electromagnetic damping assembly is driven to move relative to the stator of the electromagnetic damping assembly, so that damping force is provided.
In the present invention, electromagnetic damping means that when a conductor (mover) moves in a magnetic field (stator), an induced current subjects the conductor to an ampere force whose direction always hinders the movement of the conductor (lenz's law). The electromagnetic damping phenomenon is derived from the electromagnetic induction principle: when the closing conductor and the magnetic pole move relatively, electromagnetic resistance is generated between the closing conductor and the magnetic pole to block the relative movement, namely when the closing conductor and the magnet perform the movement of cutting the magnetic induction line, the closing conductor generates induced current due to the change of magnetic flux penetrated by the closing conductor, and the magnetic field generated by the current can block the relative movement of the closing conductor and the magnet. Thus, a mechanical damping-like effect can be exerted, and the moving part can be stopped quickly.
By energizing the energizable coil of the drive assembly, the lens carrier moves with the optical lens carried thereby under the cooperation of the energizable coil and the first magnet member. After the driving component stops driving, the lens carrier and the optical lens carried by the lens carrier still can continue to move under the action of inertia, and at the moment, the lens carrier and the optical lens carried by the lens carrier are stopped more rapidly due to the reverse damping force provided by the electromagnetic damping component, so that the rapid stability in the focusing process is realized.
In some embodiments of the invention, the mover is an electromagnetic damping conductor independent of the energizable coil, and the stator is a second magnet member. According to the invention, the electromagnetic damping component, particularly the electromagnetic damping conductor, is used as an independent damping structure, so that the electromagnetic damping component can be more flexibly and more variably applied to the camera module, and the stability in the motion structure of the camera module can be realized.
It is particularly advantageous if, unlike the feature that the conductors of the drive assembly need to be energized, the electromagnetic damping conductors according to the invention are configured as non-energized electromagnetic damping conductors, i.e. the electromagnetic damping assembly according to the invention does not require an access circuit nor a communication with the outside. As an independent component, the specific structure and the installation position of the electromagnetic damping component can be designed according to the damping direction and the damping force which are provided by the requirement. Thereby enabling further flexibility in the arrangement of the electromagnetic damping assembly.
In some embodiments of the present invention, the first magnet part of the driving assembly and the second magnet part of the electromagnetic damping assembly may be a common magnet part. That is, the drive assembly and the electromagnetic damping assembly share a magnet.
In some embodiments of the invention, the electromagnetic damping conductor may comprise at least one metal sheet. It is particularly preferred that the electromagnetic damping conductor may comprise at least one metal sheet with an intermediate opening. For the metal sheet with the middle opening, the generated damping force can be calculated more easily and accurately, i.e. the producible damping force can be determined more easily and accurately, wherein the physical magnitude of the damping force is smaller. Here, the at least one metal sheet may be adhered to the mover mounting portion. The mover can thereby be simply mounted on the lens carrier.
Of course, in other embodiments of the present invention, the mover may also be a second magnet member, and the stator may be an electromagnetic damping conductor independent of the energizable coil.
In some embodiments of the present invention, a side surface of the lens carrier is configured with a first groove as the mover mounting portion; and/or a side face of the lens carrier is configured with a second groove as the coil mounting portion, and the energizable coil surrounds the side face of the lens carrier in the second groove. Preferably, the mover of the electromagnetic damping assembly is fixedly mounted in the second recess and the energizable coil is fixedly mounted in the first recess, wherein the first recess and the second recess have different depths and are adjacent to each other, in particular connected to each other.
Alternatively, a side mover of the lens carrier is configured with a first convex portion as the mover mounting portion; and/or the side face of the lens carrier is configured with a second convex portion as the coil mounting portion.
Further, the mover of the electromagnetic damping assembly is configured as a metal sheet of at least one intermediate aperture, wherein the first protrusion is receivable in the intermediate aperture of the metal sheet.
In some embodiments of the present invention, the lens driving motor further includes a motor housing and a motor mount, wherein the motor mount and the motor housing are connected to each other, and a cavity is formed between the motor housing and the motor mount, in which the optical lens, the lens carrier, the photosensitive assembly, and the lens driving motor are accommodated.
In some embodiments of the invention, the stator of the electromagnetic damping assembly is fixedly mounted in the motor housing or the motor base. Further, the first magnet member is fixedly mounted in the motor housing or the motor base.
In some embodiments of the present invention, the motor housing has a plurality of corners, and one magnet of the first magnet member is fixedly installed inside each corner of the motor housing; alternatively, the motor base may have a plurality of corners, and one magnet of the first magnet member may be fixedly mounted inside each corner of the motor base.
In some embodiments of the invention, the first magnet part comprises at least two magnets.
In some embodiments of the present invention, the mover mounting portion is located below the coil mounting portion and is offset from the first magnet member along an optical axis direction of the optical lens.
In some embodiments of the invention, the lens carrier has a hollow for carrying the optical lens.
In some embodiments of the present invention, the lens driving motor further includes a first reed and a second reed mounted on both sides of the lens carrier, respectively, for elastically clamping the lens carrier in an optical axis direction. Therefore, the lens carrier is not contacted with the motor shell and the motor base when being driven by the driving component to move in the cavity, so that the moving range of the lens carrier is limited, and the lens carrier and the optical element in the lens carrier are prevented from being damaged due to collision to the shell or the base when the optical element driving mechanism moves or is impacted by external force.
Thus, according to the present invention, the lens carrier is movable in the cavity to reciprocate in the optical axis direction under the driving force provided by the driving assembly. The lens carrier is provided with gaps around the motor shell, and the lens carrier is connected with the first reed and the second reed. Because the electromagnetic damping component provides resistance to enable the lens carrier to stop rapidly, the frequency of reciprocating motion of the lens carrier can be reduced, the crosstalk phenomenon of the lens carrier in the reciprocating motion process is avoided, meanwhile, the reciprocating motion of the reed is reduced, and the service life of the reed is prolonged. Therefore, the camera module provided by the invention not only can realize quick and stable focusing and stable damping effect, but also can eliminate the defects that the existing damping material is easy to consume and is easily influenced by external environment, and can prolong the service life of the spring motor.
In some preferred embodiments of the invention, the first and second leaves comprise an inner frame and an outer frame, respectively, which are movable relative to each other, connected to each other by means of a spring wire, wherein the inner frames of the first and second leaves are connected to the lens carrier and the outer frames of the first and second leaves are connected to the motor housing and/or the motor base. This makes it possible to easily accommodate the lens carrier movably in the cavity, limiting the movement range of the lens carrier and improving the motor life.
In some embodiments of the invention, the inner frame of the first reed is connected to a first end of the lens carrier remote from the motor mount, and the inner frame of the second reed is connected to a second end of the lens carrier facing the motor mount; and the outer frame of the first reed is connected with the inner side of the motor shell, and the outer frame of the second reed is connected with the motor base.
In some preferred embodiments of the present invention, the second reed is made of an electrically conductive material having elasticity, and an inner frame of the second reed is electrically connected to the energizable coil and to an electrically conductive portion of the motor base that is connected to an electrical circuit. The energizable coil can thereby be powered by the second reed to effect actuation of the lens carrier.
In some embodiments of the invention, the stator of the electromagnetic damping assembly is disposed in a void formed between the magnets of the drive assembly and does not interact with the energizable coil of the drive assembly. In this case, it is particularly preferable that the stator is a second magnet member and the mover is an electromagnetic damping conductor. In particular, the plurality of magnets of the first magnet part and the plurality of magnets of the second magnet part are alternately arranged around the optical axis of the optical lens.
In some preferred embodiments of the present invention, the second magnet part may comprise at least three magnets, the at least three magnets of the second magnet part being arranged such that magnetic field lines of the second magnet part facing away from the first end of the electromagnetic damping conductor are compressed towards the middle of the second magnet part, whereas magnetic field lines of the second magnet part facing towards the second end of the electromagnetic damping conductor are expanded away from the middle of the second magnet part. By the second magnet part constructed in this way, magnetic lines of force passing through the electromagnetic damping conductor in a magnetic field generated by the second magnet part can be cut by the electromagnetic damping conductor at an angle closer to the vertical, and thus the magnetic field generated by the second magnet part can be more effectively utilized and a larger damping force can be provided. Under the condition that the required damping force is the same, the magnet structure has smaller volume, can reduce the installation space, and is convenient for flexible setting.
For example, the second magnet part may include a first magnet, a second magnet, and a third magnet that are sequentially arranged side by side, the second magnet being located between the first magnet and the third magnet. The connecting line of the two magnetic poles of the first magnet and the third magnet is basically perpendicular to the electromagnetic damping conductor, and the magnetic pole of the first magnet facing the electromagnetic damping conductor is opposite to the magnetic pole of the third magnet facing the electromagnetic damping conductor. The connecting line of the two magnetic poles of the second magnet is basically parallel to the electromagnetic damping conductor, the magnetic pole of the second magnet facing the first magnet is the same as the magnetic pole of the first magnet facing the electromagnetic damping conductor, and the magnetic pole of the second magnet facing the third magnet is the same as the magnetic pole of the third magnet facing the electromagnetic damping conductor. By the second magnet part constructed in this way, the magnetic force lines of the first end of the second magnet part facing away from the electromagnetic damping conductor are compressed towards the middle of the second magnet part, and the magnetic force lines of the second magnet part facing towards the second end of the electromagnetic damping conductor are expanded away from the middle of the second magnet part, so that the magnetic field generated by the second magnet part can be more effectively utilized and a larger damping force can be provided.
In some preferred embodiments of the present invention, the motor housing may be made of a magnetically permeable material for retaining and reinforcing magnetic force.
In some embodiments of the present invention, the camera module may further include a displacement sensor for detecting a movement displacement of the lens carrier with respect to the motor housing or the motor base. Therefore, the lens carrier can be driven in a closed-loop control mode, and an automatic focusing effect is achieved.
In some embodiments of the present invention, the image capturing module may further include a filter disposed between the photosensitive assembly and the optical lens.
In order to achieve the object of the present invention, a second aspect of the present invention provides a terminal device, which includes the camera module according to the first aspect of the present invention, and a display module, where the camera module is used to capture a target object, and the display module is used to display the target object captured by the camera module.
Features and advantages of the camera module provided according to the first aspect of the present invention are equally applicable to the terminal device provided according to the second aspect of the present invention.
FIG. 1 is a schematic diagram of one embodiment of an imaging module according to the present invention;
FIG. 2 is a partial perspective view of one embodiment of a lens drive motor of an imaging module according to the present invention;
FIG. 3 is a top view of one embodiment of a lens drive motor of an imaging module according to the present invention;
FIG. 4 is a cross-sectional view A-A of the lens driving motor of FIG. 3;
FIG. 5 is a graph of vibration attenuation for an undamped camera module and a camera module according to the present invention;
FIG. 6 is a schematic view of the magnetic fields of regularly arranged magnets;
FIG. 7 is a schematic view of an electromagnetic damping assembly having three magnets according to the present invention;
FIG. 8 is a schematic illustration of the magnetic field of the electromagnetic damping assembly according to FIG. 7;
FIG. 9 is a schematic view of a drive assembly having three magnets according to the present invention.
Embodiments of the present invention will now be described more fully hereinafter with reference to the accompanying drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. 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.
Throughout the specification, unless specifically indicated otherwise, the terms used herein should be understood as meaning as commonly used in the art. Accordingly, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the present specification will control.
It should be noted that, the term "first\second\third" related to the embodiment of the present invention is merely to distinguish similar objects, and does not represent a specific order for the objects, it is to be understood that "first\second\third" may interchange a specific order or sequence where allowed. It should be understood that the "first\second\third" differentiated objects may be interchanged where appropriate.
Traditional mechanical damping structures, such as flexible materials like damping gel, silicone rubber, foam, etc., provide damping by extrusion or friction to achieve a rapid and stable effect. However, conventional mechanical damping, such as damping gel, has the following disadvantages:
1) The damping effect is unstable, the expected damping effect is required to be achieved by adjusting and verifying different glue amounts, and the distribution state/solidification state of the damping glue, the gap change of the damping structure and the like have great influence on the damping effect; the damping effect difference between different products is larger, the quality stability is poor, and the requirement on the later-stage PID debugging is higher;
2) As the service life is prolonged, the mechanical damping property changes (aging) to influence the damping effect;
3) The mechanical damping is greatly influenced by external environments such as temperature and humidity, and the damping effect is changed after a high-temperature high-humidity test;
4) After falling or impact, the mechanical damping glue has the risk of breaking and separating, so that the motor is invalid and cannot be focused normally.
In order to overcome at least one of the above drawbacks of the prior art, the present invention first provides an image capturing module with a quick focusing function. The camera module comprises: the optical lens comprises an optical lens, a lens carrier for carrying the optical lens, a photosensitive assembly which is positioned on the image side of the optical lens along the optical axis of the optical lens, and a lens driving motor. The lens driving motor includes: a drive assembly comprising a first magnet member and an energizable coil disposed opposite the first magnet member for driving movement of the lens carrier with an optical lens carried thereby, and an electromagnetic damping assembly comprising a stator and a mover movable relative to the stator, wherein the stator and the mover are configured to provide an electromagnetic damping force by relative movement with respect to each other that resists movement of the lens carrier with an optical lens carried thereby, wherein the lens carrier comprises a coil mount for securing the energizable coil of the drive assembly and a mover mount for securing the mover of the electromagnetic damping assembly.
Some specific embodiments of the invention are described below with reference to the accompanying drawings.
In one embodiment, as shown in the exploded view of fig. 1, the camera module includes a photosensitive assembly (not shown) and a lens driving motor 1000, the lens driving motor 1000 including a motor housing 1100, a motor base 1200, an optical lens 1300, a lens carrier 1400, a driving assembly 1500, an electromagnetic damping assembly 1600, a first reed 1700, and a second reed 1800.
The photosensitive component is composed of a circuit board, a photosensitive chip and electronic components. The photosensitive assembly may also include a molding body that encapsulates the electronic component and that encapsulates a portion of the photosensitive area of the photosensitive chip.
In addition, the camera shooting module further comprises a light filtering component which is not shown and is arranged between the photosensitive component and the optical lens, the light filtering component comprises a light filter, the light filter is arranged on the lens base, and the lens base can be selectively arranged on any one of the circuit board, the molding body and the photosensitive chip non-photosensitive area through glue. The motor may be selectively attached to any one of the circuit board, the molded body, and the lens holder by an adhesive.
The motor housing 1100 and the motor base 1200 are connected to each other such that a cavity is formed between the motor housing 1100 and the motor base 1200, in which the optical lens 1300, the lens carrier 1400, the driving assembly 1500, the electromagnetic damping assembly 1600, the first reed 1700, and the second reed 1800 are accommodated. A lens carrier 1400 is movably accommodated in the cavity. The motor housing 1100 has supporting and protecting functions.
The motor base 1200 is manufactured by injection molding, for example, from plastic material. In addition, the motor base 1200 may be provided with metal pins electrically connected to an external circuit through an insert molding process.
In the embodiment shown in fig. 1, the motor housing 1100 and the motor base 1200 are configured in a quadrangular shape in a plan view in the optical axis direction, and the four corners of the motor base 1200 are respectively provided with the protruding portions 1210, and the motor housing 1100 and the protruding portions 1210 of the motor base 1200 are engaged with each other and fixed. In the case where magnets are fixedly installed near four corners of the motor housing 1100, the four protrusions 1210 do not collide with or overlap with the magnets installed on the motor housing.
Alternatively or additionally, the motor housing 1100 may be bonded to the motor base 1200 by bonding, welding, fusing, or the like to form the cavity.
Lens carrier 1400 is hollow in configuration to carry a lens assembly including optical lens 1300. The lens carrier and the lens component can be provided with mutually corresponding thread structures, so that the optical element is more stably fixed on the lens carrier. Of course, a threadless structure can be adopted, and the optical lens and the lens carrier can be adhered and fixed by using glue. Or a screw structure is combined with an adhesive to fix the optical lens and the lens carrier. Advantageously, the lens carrier is spaced apart from both the motor housing and the motor mount, i.e. the lens carrier is not in direct contact with the motor housing and the motor mount. The lens carrier 1400 is movable in the cavity, so as to drive the optical lens to reciprocate along the optical axis direction, thereby realizing the focusing function.
As shown in fig. 2 to 4, the driving assembly 1500 comprises a first magnet part 1510 and an energizable conductor, in particular an energizable coil 1520, arranged opposite to each other for driving a movement of the lens carrier 1400 together with an optical lens 1300 carried thereby in a predetermined direction, for example in the direction of an optical axis, in said cavity, said first magnet part 1510 comprising at least two magnets. The conductors, particularly coils, of the drive assembly 1500 need to be energized, for example, by introducing power leads or by wiring board leads of the camera module, in order to achieve the drive action. The magnets of the first magnet part 1510 are typically manufactured by powder sintering using neodymium iron boron permanent magnet materials to provide a fixed magnetic field. The coil is generally wound by self-adhesive enameled wires, and is used as an electrified conductor to bear force in a magnetic field provided by the magnet to generate thrust so as to push the optical lens to move. The motor housing, the magnets of the first magnet assembly, and the motor base are sequentially arranged along the optical axis, and the motor housing is positioned above the magnets and the motor base and can be bonded to the motor base by means of bonding, welding, or fusing to form the cavity.
As shown in fig. 2 to 4, the electromagnetic damping assembly 1600 includes a stator 1610 fixed in the cavity and a mover 1620 movable in the cavity relative to the stator 1610, the stator being disposed opposite the mover and configured to provide a damping force by relative movement with each other, the damping force preventing the lens carrier 1400 with the optical lens 1300 carried thereby from moving in the cavity in the predetermined direction, wherein the stator is a second magnet component and the mover is an electromagnetic damping conductor independent of the energizable coil, or the stator is an electromagnetic damping conductor independent of the energizable coil and the mover is a second magnet component. That is, by the second magnet member and the electromagnetic damping conductor being movable relative to each other, a damping force that impedes the relative movement can be provided based on lenz's law.
By providing a separate electromagnetic damping assembly, at least one of the following advantages can be achieved:
1) The electromagnetic damping can be quantized, namely the damping force can be calculated directly through calculation and simulation, so that the expected damping effect is achieved;
2) The damping effect is stable, the electromagnetic damping component consists of a conductor and a magnet, once the design or assembly is completed, the damping force is determined, the consistency is good, almost no difference exists between products, the quality stability is high, and the requirement on the later PID debugging is low;
3) The electromagnetic damping effect is hardly changed in the environment condition range of normal use of the motor without being influenced by external environment conditions, and the aging risk is avoided;
4) The electromagnetic damping component has the advantages that the electromagnetic damping component has no contact characteristic and high mechanical stability, and is not affected in the reliability condition that the motor can bear;
5) The electromagnetic damping component can effectively inhibit the vibration of the stator, obviously increase the damping coefficient of the system and reduce the resonance peak value;
6) The dynamic response of the system can be improved.
It is particularly advantageous here that the drive assembly requires energization for actuation, whereas the electromagnetic damping assembly does not require a communication circuit and can be mounted as a separate assembly on the motor, the direction of relative movement of the second magnet part of the electromagnetic damping assembly and the electromagnetic damping conductor being substantially parallel to the direction of relative movement of the first magnet part of the drive assembly and the energizable conductor. Due to Lenz's law, when the closed conductor and the magnet move to cut the magnetic induction line, the magnetic flux penetrated by the closed conductor changes, the closed conductor generates induced current, and the magnetic field generated by the induced current can obstruct the relative movement of the closed conductor and the magnet and provide a resistance, so the electromagnetic damping component is arranged according to the movement direction of the driving component, thereby providing a damping force in the relative direction for the driving component and realizing the function of quick stability.
Since the electromagnetic damping assembly is not electrically connected to the outside, the damping force provided by it exists objectively once it exists according to the setting, which is similar to a damping gel or damping material.
In one particular embodiment, the electromagnetic damping assembly 1600 achieves rapid stabilization of the lens carrier 1400 with the optical lens 1300 it carries as follows:
the driving assembly 1500 provides a required driving force to the lens carrier 1400, and the lens carrier 1400 moves from the displacement 0 in a direction parallel and opposite to the damping force provided by the electromagnetic damping assembly, i.e. the electromagnetic damping assembly 1600 provides a fixed resistance to the lens carrier 1400, while the electromagnetic damping assembly mainly plays a negative role;
after the driving assembly 1500 stops driving, the lens carrier 1400 and the optical lens 1300 carried by the lens carrier 1400 still continuously move in a predetermined direction due to the inertia effect, at this time, the damping force provided by the electromagnetic damping assembly 1600 provides a resistance to the inertial movement of the lens carrier, so that the friction force in the inertial displacement process of the lens carrier and the optical lens carried by the lens carrier is increased, the inertial displacement of the lens carrier and the optical lens carried by the lens carrier can be stopped more rapidly, the number of times of reciprocating movement of the lens carrier and the optical lens carried by the lens carrier due to inertia is reduced, and the time consumed until the lens carrier and the optical lens carried by the lens carrier are stopped is reduced, thereby realizing rapid stabilization in the focusing process.
As shown in fig. 5, S1 is a vibration damping curve without damping, S2 is a vibration damping curve with electromagnetic damping, and the amplitude of S2 is approximately zero at 1 second, which can save about 2.5 seconds. Because the electromagnetic damping component is independent relative to the driving component and forms damping force through electromagnetic field, the defects of easy abrasion, limited service time, unstable damping effect and the like of damping materials such as damping glue and the like are overcome.
In the embodiment shown in fig. 2 to 4, the lens carrier 1400 comprises a coil mounting portion for mounting the energizable coil 1520 and a mover 1620, in particular a mover mounting portion of an electromagnetic damping conductor, for fixedly mounting the electromagnetic damping assembly 1600, so that both the mover 1620 and the energizable coil 1520 of the electromagnetic damping assembly 1600 can be fixedly mounted in the lens carrier 1400. The stator 1610, and in particular the second magnet part of the electromagnetic damping assembly 1600, is fixedly mounted in the motor housing or motor base, for example by gluing inside the motor housing or inside the bottom of the motor base. The first magnet part 1510 is fixedly mounted in the motor housing or the motor base, for example, adhered to the inside of the motor housing or the inside bottom of the motor base by glue. Therefore, the lens carrier is driven to move through the energizable coil, and then the mover of the electromagnetic damping assembly is driven to move relative to the stator of the electromagnetic damping assembly, so that damping force is provided. In particular, the coil mounting portion and the mover mounting portion are provided on the lens carrier so as to be connected to each other.
In some embodiments, mover 1620 of the electromagnetic damping assembly is an electromagnetic damping conductor, preferably a sheet metal. The metal sheet of the electromagnetic damping assembly may be glued to the mover mounting portion. The volume of the metal sheet can be adjusted according to the rotor mounting part on the lens carrier, and the rotor mounting part can be arranged according to the gap on the lens carrier.
In some embodiments, the mover mounting portion may be a first groove, such as an irregular groove, opened at a side of the lens carrier, in which a metal sheet of the electromagnetic damping assembly may be received.
Further, the mover mounting portion and the coil mounting portion may be configured as a stepped structure on the lens carrier, particularly, a stepped structure on an outer peripheral surface of the lens carrier, as shown in fig. 4. The stepped structures of the mover mounting portion and the coil mounting portion may be adjacent to each other and have different heights in a direction transverse to the optical axis, in particular, in a direction perpendicular to the optical axis. As an example, in fig. 4, a mover 1620 (the second magnet part 1610 or the electromagnetic damping conductor) of the electromagnetic damping assembly 1600 is mounted at a higher step, for example, near the image side in the direction of the optical axis, and an energizable coil 1520 of the driving assembly 1500 is mounted at a lower step, for example, near the object side in the direction of the optical axis.
Alternatively, the mover mounting portion may also be a first protrusion portion opened at a side of the lens carrier, and the first protrusion portion may be accommodated in the metal sheet of the middle opening of the electromagnetic damping assembly.
In some embodiments, as shown in fig. 3 and 4, the energizable coil 1520 may be disposed in a coil mount around a side of the lens carrier, e.g., wrapped around the side of the lens carrier. For example, the coil mount may be a second groove open at the side of the lens carrier, in which the energizable coil 1520 surrounds the entire side of the lens carrier. The magnets of the drive assembly are arranged opposite the energizable coil, for example, bonded to the inner periphery of the motor base, for example, one magnet being bonded to each of the four corners of the motor base. The height of the magnet of the drive assembly in the direction of the optical axis is designed to be higher than the coil mounting part, so that the energizable coil mounted in the lens carrier around the side of the lens carrier always remains within the coverage area or the action range of the magnet of the drive assembly during the movement in the cavity (for example, the movement from bottom to top along the optical axis).
In some embodiments, the mover mounting portion and the coil mounting portion are grooves provided on a lens carrier side, particularly an outer circumferential side. For example, the mover mounting portion is a first groove, and the coil mounting portion is a second groove. Alternatively, the first groove may be a single groove or a set of grooves, and the second groove may be a single groove or a set of grooves. Optionally, the depth of the first groove is smaller than the depth of the second groove and the first groove and the second groove are connected to each other. Further, at least one retaining wall may be provided on the lens carrier side, which forms a partition wall between two adjacent grooves, for example a partition wall between a first groove and/or a second groove. In some embodiments, exactly one or two retaining walls may be provided for separating the first groove and/or the second groove. Alternatively, the retaining wall is in the form of a protrusion on the side of the lens carrier, so that the coil can be wound in the grooves on both sides of the retaining wall, and the coil or the magnet can be separated and fixed by the retaining wall.
In other embodiments, a combined mounting groove in the form of a continuous step may also be formed on the side of the lens carrier, which includes at least one retaining wall extending perpendicular to the optical axis direction and at least one step extending along the optical axis direction, wherein the at least one retaining wall extending perpendicular to the optical axis direction forms a corresponding step sidewall, as shown in fig. 4. Thus, the steps of the combined mounting groove may form the first groove and/or the second groove, respectively, wherein the at least one step may be used for winding the energizable coil and mounting the mover, and the at least one retaining wall may enable separation and fixation of the energizable coil from the mover. In this case, the coil mounting part and the mover mounting part may be disposed adjacent to each other. Optionally, the length of the step along the optical axis direction is smaller than the width of the corresponding retaining wall in the direction perpendicular to the optical axis, so as to achieve, for example, convenient and reliable fixing of the metal sheet or the magnet of the electromagnetic damping conductor.
In some embodiments, the metal sheet of the electromagnetic damping component is mounted in the mover mounting portion and opposite to the magnet of the driving component, where the electromagnetic damping component and the driving component share the magnet. The mover mounting portion may be disposed above or below the coil mounting portion. At this time, in order to ensure that the coil of the driving assembly and the electromagnetic damping metal sheet are always in the coverage range of the shared magnet in the process of moving from bottom to top in the cavity, the shared magnet needs to be increased in thickness, and the coil of the driving assembly and the electromagnetic damping metal sheet are ensured to be provided with sufficient magnetic force and magnetic force coverage range.
In an alternative embodiment, the electromagnetic damping assembly does not share a magnet with the drive assembly, i.e. the second magnet part and the first magnet part are completely independent from each other. The rotor mounting part is adjacent to the coil mounting part, and a magnet or a metal sheet of the electromagnetic damping assembly is mounted on the rotor mounting part and can be contacted with or not contacted with a coil of the coil mounting part. Here, for example, the mover mounting portion and the coil mounting portion may be configured as a stepped structure on the lens carrier, particularly, a stepped structure on the outer peripheral surface of the lens carrier, as shown in fig. 4. At this time, the magnet of the driving assembly can be positioned at four corners of the motor housing or the motor base and higher than the coil mounting part, so as to ensure that the coil is always within the coverage range of the magnet in the process of moving from bottom to top. The rotor installation part is located the coil installation part below, and is not on same horizontal plane with drive assembly's magnetite, avoids mutual interference. It is particularly preferred that the stator 1610 of the electromagnetic damping assembly, and in particular the second magnet member, is disposed in the void formed between the magnets 1510 of the drive assembly and does not interact with the energizable coil of the drive assembly, as shown in fig. 3.
In other embodiments, the coil mounting portion may also be a second protruding portion formed on a side surface of the lens carrier, and the coil does not completely surround the lens carrier on the second protruding portion. In this case, the magnets of the drive unit may be disposed opposite the coils, for example, adhered to four corners inside the motor case or four corners inside the motor case. The position of the magnet of the driving component is set in such a way that the coil can always be in the action coverage range of the magnet in the process of moving from bottom to top. The lens carrier is configured in a quadrangular shape in a plan view in an optical axis direction, and at least one mover mounting portion for mounting the mover of the electromagnetic damping assembly may be provided in any one of four corners of the lens carrier. And stator mounting portions for mounting the stator of the electromagnetic damping assembly may be provided in any of four corners of the motor housing in correspondence with the mover mounting portions.
In other embodiments, the coil of the driving assembly may be mounted on the end side of the lens carrier, and the magnet of the driving assembly is disposed above the lens carrier opposite to the coil, and the electromagnetic damping assembly is disposed in a gap between the magnets of the driving assembly, and does not interact with the coil of the driving assembly.
Of course, the coil of the drive assembly may also be wound directly on the side of the lens carrier.
As shown in fig. 1 and 2, a first reed 1700 and a second reed 1800 are respectively mounted on both sides of the lens carrier 1400 for elastically sandwiching the lens carrier. When the lens carrier moves in the cavity under the drive of the drive component, the movement range of the lens carrier is limited by the elastic clamping of the first reed and the second reed, so that the lens carrier is not contacted with the motor shell and the motor base in the movement process, and the lens carrier is prevented from being damaged by the lens carrier and the optical element in the lens carrier due to collision to the shell or the base when the optical element drive mechanism moves or is impacted by external force, thereby prolonging the service life of the motor. In addition, due to the damping force provided by the electromagnetic damping assembly 1600, the number of reciprocating movements of the reed is correspondingly reduced, and the service life of the spring motor is further prolonged.
In some embodiments, as shown in fig. 2, first reed 1700 includes inner frame 1710 and outer frame 1720 that are movable relative to each other connected to each other by wire 1730. The wire 1730 is used to connect the inner frame 1710 and the outer frame 1720 and provide a rebound force to enable the inner frame 1710 and the outer frame 1720 to return to the same plane. The inner frame 1710 of the first reed is fixedly connected (e.g., by glue bonding or heat staking) with the lens carrier 1400, e.g., with a first end (top surface) of the lens carrier 1400 remote from the motor mount 1200. The outer frame 1720 of the first reed is fixedly attached (e.g., by glue) to the motor housing 1100 and/or the motor base 1200, preferably at least to the inside of the motor housing 1100.
Also, as shown in fig. 2, second reed 1800 is for supporting lens carrier 1400 and includes inner frame 1810 and outer frame 1820 that are movable relative to each other connected to each other by wire springs 1830. The wire springs 1830 serve to connect the inner frame 1810 and the outer frame 1820 and provide a rebound force that enables the inner frame 1810 and the outer frame 1820 to return to the same plane. The inner frame 1810 of the second reed is fixedly connected (e.g., by glue bonding or heat staking) to the lens carrier 1400, e.g., to a second end (bottom surface) of the lens carrier 1400 facing the motor mount 1200. The outer frame 1820 of the second reed is fixedly attached (e.g., by glue) to the motor base 1200, e.g., by the boss 1220 of the motor base 1200.
The first and second leaves are resilient, e.g. made of a metal, typically a metal alloy, such as a copper alloy. Here, the inner frame of the second reed is electrically connected to the energizable coil 1520, for example, by solder, resistance welding, laser welding, and the like, and is electrically connected to the metal leg of the motor base. In other words, the inner frame of the second reed turns on the energizable coil 1520 with an external circuit, thereby supplying power to the energizable coil 1520 to achieve driving of the lens carrier.
In some preferred embodiments, the motor housing 1100 is made of magnetically permeable material, particularly a material having high magnetic permeability. For example, the motor housing 1100 is made of a ferromagnetic material, such as iron, nickel, cobalt, or alloys thereof, or the like. Still further, the motor housing 1100 has a plurality of, for example, four, protrusions extending in a direction parallel to the optical axis. Thereby facilitating the preservation and enhancement of magnetic force.
In some embodiments, the electromagnetic damping conductor may comprise at least one metal sheet. It is particularly preferred that the electromagnetic damping conductor may comprise at least one metal sheet with an intermediate opening, i.e. a coil-shaped hollow sheet or a hollow sheet of another shape. Of course, in other embodiments, the electromagnetic damping conductor may comprise a closed metal sheet, i.e., a non-hollow sheet, with which a better damping effect can be obtained. Since the resistance can be calculated according to a fixed calculation formula for the metal sheet having the intermediate cavity (similar to the coil shape), and the resistance is obtained in the form of integration for the metal sheet without the intermediate cavity, the magnitude of the damping force can be calculated better for the metal sheet having the intermediate hole, i.e., the metal sheet similar to the coil structure, and the required damping force can be determined more accurately from the design and calculation aspects.
In addition, the electromagnetic damping conductor is made of a metal or alloy material with high conductivity/low resistivity, such as copper/copper alloy, silver/silver alloy, etc.
Preferably, the electromagnetic damping component and the driving component can have a magnet and coil structure.
As shown in fig. 6, the magnetizing direction of the conventional magnet causes the magnetic induction lines to form a closed loop, and the circular magnetic induction lines are cut by the conductors in the magnetic field to generate current. Because the magnet forms a closed loop, the conductor arranged in parallel with the magnet is cut at an angle when cutting the magnetic induction line.
To improve the damping effect, in some particularly preferred embodiments, the second magnet part comprises at least three magnets, the at least three magnets of the second magnet part being arranged such that the magnetic field lines of the second magnet part 1610 facing away from the first end 100 of the electromagnetic damping conductor 1620 are compressed towards the middle of the second magnet part 1610, whereas the magnetic field lines of the second magnet part 1610 facing towards the second end 200 of the electromagnetic damping conductor 1620 are expanded away from the middle of the second magnet part 1610. By such an arrangement of magnets, the magnetic flux lines can be changed, thereby providing a more advantageous cutting angle for the coil/conductor, and further improving the damping effect.
In a specific embodiment, as shown in fig. 7 and 8, the second magnet component 1610 includes a first magnet 110, a second magnet 120, and a third magnet 130 that are sequentially side by side, with the second magnet 120 being located between the first magnet 110 and the third magnet 130. The connection line (i.e., magnetization direction) of the respective two poles of the first magnet 110 and the third magnet 130 is substantially perpendicular to the electromagnetic damping conductor 1620, e.g., a coil, while the connection line of the two poles (i.e., magnetization direction) of the second magnet 120 is substantially parallel to the electromagnetic damping conductor. The magnetic pole 111 (S pole) of the first magnet 110 facing the electromagnetic damping conductor 1620 is opposite to the magnetic pole 131 (N pole) of the third magnet 130 facing the electromagnetic damping conductor 1620, the magnetic pole 121 (S pole) of the second magnet 120 facing the first magnet 110 is identical to the magnetic pole 111 (S pole) of the first magnet 110 facing the electromagnetic damping conductor 1620, and the magnetic pole 122 (N pole) of the second magnet 120 facing the third magnet 130 is identical to the magnetic pole 131 (N pole) of the third magnet 130 facing the electromagnetic damping conductor 1620.
In the embodiment shown in fig. 7 and 8, the magnetizing directions (arrow directions in fig. 7 and 8) of the three magnets of the second magnet part 1610 are different from conventional ones, as shown in fig. 8, in such a way that the upper magnetic force lines are compressed/flattened and the lower magnetic force lines are expanded/stretched, i.e., the magnetic force lines of the first end 100 of the second magnet part 1610 facing away from the electromagnetic damping conductor 1620 are compressed toward the middle of the second magnet part 1610, and the magnetic force lines of the second magnet part 1610 facing toward the second end 200 of the electromagnetic damping conductor 1620 are expanded away from the middle of the second magnet part 1610. The arrangement of magnets can directionally strengthen a magnetic field on one side (the side 200 of the second magnet component 1610 facing the electromagnetic damping conductor 1620), and because the magnetic poles of the magnets on the side are identical and homopolar mutually exclusive, the magnetic induction lines irregularly move outwards and are distributed in a closed loop like a cuboid, so that the magnetic induction lines passing through the electromagnetic damping conductor, such as a coil, are cut by the electromagnetic damping conductor at an angle which is more nearly vertical, thereby effectively improving the magnetic field utilization rate of the electromagnetic damping conductor, improving the electromagnetic force and providing larger damping force.
In some embodiments, the drive assembly may also have an arrangement of more than three magnets similar to the electromagnetic damping assembly described above. That is, the first magnet part may comprise at least three magnets arranged such that magnetic lines of force of the first magnet part facing away from the first end of the energizable conductor are compressed towards the middle of the first magnet part, whereas magnetic lines of force of the first magnet part facing towards the second end of the energizable conductor are expanded away from the middle of the first magnet part. By applying the magnet structure to the driving assembly, the effect of improving the thrust of the motor can be achieved, and the motor can push the lens with larger weight.
In a specific example, as shown in fig. 9, the first magnet part 1510 includes a fourth magnet 140, a fifth magnet 150, and a sixth magnet 160 that are sequentially arranged side by side, and the fifth magnet 150 is located between the fourth magnet 140 and the sixth magnet 160. The connection of the respective two poles of the fourth and sixth magnets is substantially perpendicular to the energizable conductor 1520, while the connection of the two poles of the fifth magnet is substantially parallel to the energizable conductor 1520. The magnetic pole of the fourth magnet facing the energizable conductor 1520 is opposite to the magnetic pole of the sixth magnet facing the energizable conductor 1520, the magnetic pole of the fifth magnet facing the fourth magnet is the same as the magnetic pole of the fourth magnet facing the energizable conductor 1520, and the magnetic pole of the fifth magnet facing the sixth magnet is the same as the magnetic pole of the sixth magnet facing the energizable conductor 1520.
While reinforcing the magnetic field on one side (the side of the first magnet 1510 facing the energizable conductor 1520), the other side (the side of the first magnet 1510 facing away from the energizable conductor 1520) is different in magnetic poles, so that the tendency of the magnetic field on the other side is reduced, a certain magnetic leakage prevention effect is achieved, the influence on adjacent modules and electroacoustic devices is reduced, and a good electromagnetic shielding effect can be achieved by matching with an external magnetic conductive housing.
In addition, the camera module further comprises a displacement sensor, such as a Hall effect sensor or a TMR sensor, and the like, and is used for detecting the movement displacement of the lens carrier relative to the motor shell and the motor base, so that the lens carrier can be driven in a closed-loop control mode, and an automatic focusing effect is achieved. In the closed-loop control mode, a circuit board needs to be correspondingly added, the circuit board can be a flexible circuit board or a flexible-rigid composite board, and the like, and the electronic components are arranged on the circuit board and can comprise passive components such as a capacitor, a resistor, an inductor, and the like. The circuit board and the electronic component can be arranged on one side of the driving assembly. In other embodiments, the circuit board and the electronic components are disposed on the motor base.
The invention further provides terminal equipment, which comprises the camera shooting module and a display module, wherein the camera shooting module is used for shooting a target object, and the display module is used for displaying the target object shot by the camera shooting module.
The terminal device according to the invention may be a mobile terminal device, such as a mobile phone, tablet computer or the like.
The features or combinations of features mentioned above in the description, in the drawings and in the claims may be used in any combination with one another or individually, as long as they are significant and do not contradict one another within the scope of the invention. The advantages and features described for the camera module provided by the invention are applicable in a corresponding manner to the terminal device provided by the invention and vice versa.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent modifications made by the present invention and the accompanying drawings, or direct/indirect application in other related technical fields are included in the scope of the present invention.
Claims (26)
- The utility model provides a make a video recording module, its characterized in that, make a video recording the module including optical lens, be used for bearing the lens carrier of optical lens, along the optical axis of optical lens is located the sensitization subassembly and the lens driving motor of the image side of optical lens, wherein the lens driving motor includes:A driving assembly comprising a first magnet part and an energizable coil arranged opposite to the first magnet part for driving the lens carrier to move together with the optical lens carried by the lens carrier, andan electromagnetic damping assembly comprising a stator and a mover movable relative to the stator, wherein the stator and the mover are configured to provide an electromagnetic damping force by relative movement to each other, which electromagnetic damping force resists movement of the lens carrier along with an optical lens carried thereby,the lens carrier comprises a coil mounting part for fixing an energizable coil of the driving assembly and a rotor mounting part for fixing a rotor of the electromagnetic damping assembly.
- The camera module of claim 1, wherein the mover is an electromagnetically damped conductor independent of the energizable coil and the stator is a second magnet component.
- The camera module of claim 2, wherein the first magnet component of the drive assembly and the second magnet component of the electromagnetic damping assembly are a common magnet component.
- A camera module according to any one of claims 1 to 3, wherein the mover of the electromagnetic damping assembly is constructed as at least one metal sheet that is adhered to the mover mounting portion.
- The camera module of claim 1, wherein the mover is a second magnet member and the stator is an electromagnetic damping conductor independent of the energizable coil.
- The image pickup module according to any one of claims 1 to 5, wherein a side surface of the lens carrier is configured with a first groove as the mover mounting portion; and/or a side face of the lens carrier is configured with a second groove as the coil mounting portion, and the energizable coil surrounds the side face of the lens carrier in the second groove.
- The camera module of claim 6, wherein the first recess and the second recess have different depths and are connected to each other.
- The camera module according to any one of claims 1 to 7, wherein a side mover of the lens carrier is configured with a first boss as the mover mounting portion; and/or the side face of the lens carrier is configured with a second convex portion as the coil mounting portion.
- The camera module of claim 8, wherein the mover of the electromagnetic damping assembly is constructed as a metal sheet having at least one intermediate aperture, wherein the first boss is receivable in the intermediate aperture of the metal sheet.
- The image pickup module according to any one of claims 1 to 9, wherein the lens driving motor further comprises a motor housing and a motor mount, wherein the motor mount and the motor housing are connected to each other, and a cavity is formed between the motor housing and the motor mount, in which the optical lens, the lens carrier, the photosensitive assembly, and the lens driving motor are accommodated.
- The camera module of claim 10, wherein the stator of the electromagnetic damping assembly is fixedly mounted in the motor housing or the motor mount.
- The image capturing module according to claim 10 or 11, wherein the motor housing has a plurality of corners, and one magnet of the first magnet member is fixedly mounted inside each corner of the motor housing; or the motor base is provided with a plurality of corner parts, and one magnet of the first magnet component is fixedly installed on the inner side of each corner part of the motor base.
- The camera module of claim 12, wherein the first magnet assembly includes at least two magnets.
- The imaging module according to claim 12 or 13, wherein the mover mounting portion is located below the coil mounting portion and is offset from the first magnet member along an optical axis direction of the optical lens.
- The camera module of any one of claims 1 to 14, wherein the lens carrier has a hollow for carrying the optical lens.
- The image pickup module according to any one of claims 10 to 15, wherein the lens driving motor further comprises a first reed and a second reed mounted on both sides of the lens carrier, respectively, for elastically sandwiching the lens carrier in an optical axis direction.
- The camera module of claim 16, wherein the first and second leaves comprise inner and outer frames, respectively, that are movable relative to each other, connected to each other by a wire, wherein the inner frames of the first and second leaves are connected to the lens carrier and the outer frames of the first and second leaves are connected to the motor housing and/or the motor mount.
- The camera module of claim 17, wherein an inner frame of the first reed is connected to a first end of the lens carrier away from the motor mount, and an inner frame of the second reed is connected to a second end of the lens carrier facing the motor mount; andThe outer frame of the first reed is connected with the inner side of the motor shell, and the outer frame of the second reed is connected with the motor base.
- The camera module of claim 17 or 18, wherein the second reed is made of an electrically conductive material having elasticity, and an inner frame of the second reed is electrically connected to the energizable coil and to an electrically conductive portion of the motor base that is connected to an electrical circuit.
- The imaging module according to any one of claims 2 to 19, wherein the plurality of magnets of the first magnet part and the plurality of magnets of the second magnet part are alternately arranged around an optical axis of the optical lens.
- The camera module of any of claims 2 to 20, wherein the electromagnetic damping conductor is configured as an unpowered electromagnetic damping conductor.
- The imaging module of any of claims 2 to 21, wherein the electromagnetic damping assembly second magnet member includes at least three magnets, the at least three magnets of the second magnet member being arranged such that magnetic field lines of the second magnet member facing away from the first end of the electromagnetic damping conductor are compressed toward a middle of the second magnet member, and magnetic field lines of the second magnet member facing toward the second end of the electromagnetic damping conductor are expanded away from the middle of the second magnet member.
- The camera module of any one of claims 11 to 22, wherein the motor housing is made of magnetically permeable material.
- The camera module of any one of claims 1 to 23, further comprising a displacement sensor for detecting a movement displacement of the lens carrier relative to the motor housing or the motor mount.
- The imaging module of any of claims 1 to 24, further comprising a filter disposed between the photosensitive assembly and the optical lens.
- A terminal device, characterized in that the terminal device comprises:the camera module according to any one of claims 1 to 25, for capturing a target object;and the display module is used for displaying the target object shot by the shooting module.
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| CN2021100435376 | 2021-01-13 | ||
| CN202110043537.6A CN114765652B (en) | 2021-01-13 | 2021-01-13 | Camera module and terminal equipment |
| PCT/CN2022/070943 WO2022152069A1 (en) | 2021-01-13 | 2022-01-10 | Camera module and terminal device |
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| CN116762350A true CN116762350A (en) | 2023-09-15 |
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| CN202280009173.2A Pending CN116762350A (en) | 2021-01-13 | 2022-01-10 | Camera module and terminal equipment |
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| CN116074615B (en) * | 2023-03-07 | 2023-09-08 | 荣耀终端有限公司 | Camera control method and device and terminal equipment |
| CN117156250B (en) * | 2023-10-27 | 2024-04-09 | 荣耀终端有限公司 | Driving device, camera module and electronic equipment |
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| JPH11238235A (en) * | 1997-12-16 | 1999-08-31 | Akai Electric Co Ltd | Optical head actuator |
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| KR100616662B1 (en) * | 2005-01-13 | 2006-08-28 | 삼성전기주식회사 | Focal length adjustment apparatus having improved vibrational characteristic and impact resistance |
| CN1873513A (en) * | 2005-06-03 | 2006-12-06 | 华硕电脑股份有限公司 | Collision bumper for optical mechanical module, and movable lenses |
| CN101825759A (en) * | 2005-09-02 | 2010-09-08 | 日本电产三协株式会社 | Lens driving apparatus |
| CN103810925A (en) * | 2012-11-13 | 2014-05-21 | 郑州鑫雨诺信息技术有限公司 | Electronic magnetic moment tester |
| JP2014191073A (en) * | 2013-03-26 | 2014-10-06 | Asahi Kasei Electronics Co Ltd | Position detector |
| KR20160045382A (en) * | 2014-10-17 | 2016-04-27 | 엘지이노텍 주식회사 | Lens moving apparatus |
| KR101751132B1 (en) * | 2015-11-03 | 2017-06-26 | 삼성전기주식회사 | Camera module |
| CN105472219B (en) * | 2015-12-01 | 2019-11-29 | 宁波舜宇光电信息有限公司 | The electrical bracket and camera module of integrated driving coil and its application |
| CN107340668B (en) * | 2016-04-28 | 2019-11-19 | 台湾东电化股份有限公司 | Twin-lens photographic system |
| CN206411316U (en) * | 2016-12-29 | 2017-08-15 | 维沃移动通信有限公司 | A kind of camera module and mobile terminal |
| CN211236410U (en) * | 2019-12-19 | 2020-08-11 | 河南皓泽电子股份有限公司 | FPC double-camera driving motor |
| CN211531165U (en) * | 2020-03-09 | 2020-09-18 | 信利光电股份有限公司 | Automatic focusing camera module |
-
2021
- 2021-01-13 CN CN202110043537.6A patent/CN114765652B/en active Active
-
2022
- 2022-01-10 WO PCT/CN2022/070943 patent/WO2022152069A1/en active Application Filing
- 2022-01-10 CN CN202280009173.2A patent/CN116762350A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN114765652A (en) | 2022-07-19 |
| CN114765652B (en) | 2022-12-06 |
| WO2022152069A1 (en) | 2022-07-21 |
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