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WO2018107725A1 - Unité de caméra, module de caméra, et terminal mobile - Google Patents

Unité de caméra, module de caméra, et terminal mobile Download PDF

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Publication number
WO2018107725A1
WO2018107725A1 PCT/CN2017/091077 CN2017091077W WO2018107725A1 WO 2018107725 A1 WO2018107725 A1 WO 2018107725A1 CN 2017091077 W CN2017091077 W CN 2017091077W WO 2018107725 A1 WO2018107725 A1 WO 2018107725A1
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WO
WIPO (PCT)
Prior art keywords
magnetic
magnetic member
optical package
coil
camera module
Prior art date
Application number
PCT/CN2017/091077
Other languages
English (en)
Chinese (zh)
Inventor
李昕
赵宏原
蒋麟军
邓斌
李得亮
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201780007863.3A priority Critical patent/CN108476283B/zh
Priority to CN201910979456.XA priority patent/CN110673296B/zh
Publication of WO2018107725A1 publication Critical patent/WO2018107725A1/fr

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G02B7/09—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/32—Means for focusing
    • G03B13/34—Power focusing
    • G03B13/36—Autofocus systems
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/90—Arrangement of cameras or camera modules, e.g. multiple cameras in TV studios or sports stadiums

Definitions

  • the present application relates to the technical field of imaging devices, and in particular, to an imaging unit, a camera module, and a mobile terminal.
  • the camera module includes two camera units, and the two camera units respectively capture the picture and after image processing, the picture quality can be greatly improved.
  • the voice coil motor for realizing automatic zoom and optical image stabilization in the camera unit relies on four unipolar magnets (having two magnetic poles) to drive the movement of the optical package, and the voice coil motor to the other of the mobile terminal
  • the magnetic device and the external magnetic material have large interference.
  • the mutual magnetic interference between the two camera units is large.
  • the spacing of the units not only increases the difficulty of the assembly process of the camera module, but also wastes the space of the whole machine environment, which leads to the inability to adapt the size design of the whole machine state environment, which is not conducive to the minimum design of the camera module.
  • the present application provides an image capturing unit, a camera module, and a mobile terminal, which are used to solve the effects of auto zooming and optical image stabilization of the camera unit in the prior art, and it is necessary to increase the two camera units.
  • the spacing is not conducive to the problem of minimizing the design of the camera module.
  • an embodiment of the present application provides a camera unit, which is applied to a camera module, where the camera module includes at least two camera units, and the camera unit includes a first optical package, a first magnetic component, and a second magnetic member, a third magnetic member, a weight, and a first coil, wherein the first magnetic member, the second magnetic member, the third magnetic member, and the weight are sequentially radially surrounding a first optical package, the first coil is distributed between the first magnetic member and the first optical package, and between the third magnetic member and the first optical package, the first a magnetic member and the third magnetic member are oppositely disposed and are both bipolar magnets, the second magnetic member is a unipolar magnetism, and the weight is located in the first optical package Between the other camera units of the camera module, the weight of the second magnetic member is balanced.
  • the first magnetic member and the third magnetic member of the bipolar magnetic magnet reduce the magnetic interference of the magnetic member for the optical image stabilization function on the other camera unit and the whole environment, and reduce the spacing between the two camera units, thereby reducing the spacing of the two camera units.
  • the difficulty of assembling the camera module saves the space of the whole machine environment and is beneficial to the minimization of the camera module.
  • the first magnetic member and the second magnetic member each include a first magnetic portion and a second magnetic portion that are opposite in magnetic orientation, and the first magnetic portion and the second magnetic portion
  • the axial arrangement of the first optical package, the first magnetic portion of the first magnetic member is opposite to the magnetic orientation of the first magnetic portion of the second magnetic member, the first magnetic member The second magnetic portion is opposite to the magnetic orientation of the second magnetic portion of the second magnetic member.
  • the first magnetic portion and the second magnetic portion having opposite magnetic orientations form a convergent magnetic field, reduce magnetic leakage, the first magnetic member and the third
  • the magnetic field formed by the magnetic member interacts with the first coil to realize an autofocus function, and the magnetic field converged by the first magnetic member and the third magnetic member prevents magnetic properties of the magnetic member for the autofocus function from being applied to the other camera unit and the entire environment. interference.
  • the first magnetic member and the second magnetic member further include a non-magnetic portion, and the first magnetic portion and the second magnetic portion are fixedly connected by the non-magnetic portion.
  • the first magnetic portion and the second magnetic portion each include a first end facing the first optical package and a second end facing away from the first optical package, The first end and the second end are magnetic poles of the first magnetic portion or the second magnetic portion.
  • the first optical package includes opposite first and third sidewalls, the first sidewall faces the first magnetic member, and the third sidewall faces the third a magnetic member, the first coil being wound around the first side wall and the third side wall.
  • the first coil drives the movement of the first optical package under the action of the Lorentz force to achieve the purpose of focusing, and the fixing method is simple and easy.
  • the image capturing unit further includes a second coil, and the second coil is located on a same side of the first magnetic member, the second magnetic member, and the third magnetic member, and the second The coil is for interacting with a magnetic field generated by the first magnetic member, the second magnetic member, and the third magnetic member.
  • the Lorentz force is generated by the first magnetic member, the second magnetic member and the third magnetic member to compensate for the displacement caused by the jitter of the second optical package to perform the optical anti-shake action. Improve the shooting effect.
  • the magnetic force of the second magnetic member is twice the magnetic force of the first magnetic member, and the magnetic force of the first magnetic member is the same as the magnetic force of the third magnetic member, so that the first The two coils can generate sufficient Lorentz force after inputting the current, improve the optical anti-shake effect, and improve the shooting effect.
  • the first magnetic member and the third magnetic member are symmetrical with respect to a center of the first optical package, so that when an autofocus operation is performed, an input current of the first coil is easily controlled to implement automatic
  • the Lorentz force of the focusing function is easy to control.
  • the second magnetic member and the weight are symmetric with respect to a center of the first optical package to make the weight of the imaging unit uniform.
  • the embodiment of the present application further provides a camera module, where the camera module includes a second optical package and the imaging unit according to any one of the above, the second optical package and the first The optical modules are respectively located on opposite sides of the weight, the camera module further includes a third coil and a fourth magnetic component, and the third coil is wound around the periphery of the second optical package to form a closed In the annular structure, the fourth magnetic member is distributed on the periphery of the third coil, and the fourth magnetic member is used to generate a magnetic field to realize auto focusing and optical image stabilization of the second optical package.
  • the first magnetic member and the third magnetic member of the bipolar magnetic magnet reduce the magnetic interference of the magnetic member for the optical image stabilization function on the other camera unit and the whole environment, and reduce the spacing between the two camera units, thereby reducing the spacing of the two camera units.
  • the difficulty of assembling the camera module saves the space of the whole machine environment and is beneficial to the minimization of the camera module.
  • the camera module further includes a fourth coil, the fourth coil is located on a same side of each of the fourth magnetic members, and the fourth coil is configured to be generated with each of the fourth magnetic members
  • the magnetic field interacts.
  • the third coil generates a Lorentz force to compensate the displacement caused by the jitter of the second optical package to act as an optical anti-shake, thereby improving the shooting effect.
  • the fourth magnetic member is a unipolar magnetism.
  • the unipolar magnetic magnet is simple in process and low in cost.
  • the magnetic poles of the fourth magnetic member are distributed at one end of the fourth magnetic member facing the second optical package and an end facing away from the optical package, and each of the fourth magnetic members The polarity of one end facing the second optical package is the same.
  • the Lorentz force of the third coil of the input current is along the optical axis direction, so that the Lorentz force of the fourth coil of the input current is perpendicular to the optical axis direction.
  • the minimum distance between the weight and the fourth magnetic member is no more than 1 mm. The difficulty in assembling the camera module 30 is reduced, the space of the whole machine environment is saved, and the minimum design of the camera module 30 is facilitated.
  • the number of the fourth magnetic members is four, and the fourth magnetic members are arranged in an angular distribution manner to make the magnetic field formed by the fourth magnetic member uniform, and the third coil and the fourth coil are The Lorentz force generated by the magnetic field is easy to control, and the effects of autofocus and optical image stabilization are improved.
  • the embodiment of the present application further provides a mobile terminal, including the camera module of any of the above.
  • the first magnetic member and the third magnetic member of the bipolar magnetic magnet reduce the magnetic interference of the magnetic member for the optical image stabilization function on the other camera unit and the whole environment, and reduce the spacing between the two camera units, thereby reducing the spacing of the two camera units.
  • the difficulty of assembling the camera module saves the space of the whole machine environment, and is beneficial to the minimization design of the camera module and the mobile terminal.
  • the beneficial effects of the present application are as follows: the first magnetic member and the third magnetic member are bipolar magnetic magnets, so that the magnetic paths of the first magnetic member and the third magnetic member converge, and the magnetic flux leakage is reduced, thereby preventing the autofocus function.
  • the magnetic component interferes magnetically with another camera unit and the environment of the whole machine.
  • the weight of the weight is balanced with respect to the weight of the second magnetic member, the weight of the weight is non-magnetic, and the second magnetic component is away from the other camera unit.
  • the magnetic interference of the magnetic component used for the optical image stabilization function on the other camera unit and the whole machine environment is reduced, the spacing between the two camera units is reduced, the difficulty of assembling the camera module is reduced, and the space of the whole machine environment is saved. Conducive to the minimum design of the camera module.
  • FIG. 1 and FIG. 2 are schematic diagrams showing the structure of an image capturing unit according to an embodiment of the present application.
  • FIG. 3 is a schematic diagram of a coil distribution of an image pickup unit according to an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a magnetic component distribution of an image pickup unit according to an embodiment of the present application.
  • FIG. 5 is a schematic cross-sectional view of a first magnetic member according to an embodiment of the present application.
  • FIG. 6 is a schematic cross-sectional view of a second magnetic member according to an embodiment of the present application.
  • FIG. 7 is a schematic diagram of an image capturing unit according to an embodiment of the present application.
  • FIG. 8 and FIG. 9 are schematic diagrams showing the structure of a camera module according to Embodiment 1 of the present application.
  • FIG. 10 is a schematic diagram of a coil distribution of a camera module according to Embodiment 1 of the present application.
  • FIG. 11 is a schematic diagram of a magnetic component distribution of a camera module according to Embodiment 1 of the present application.
  • FIG. 12 is a schematic structural diagram of a camera module according to Embodiment 2 of the present application.
  • FIG. 13 is a schematic diagram of a mobile terminal according to an embodiment of the present application.
  • the camera unit provided in the embodiment of the present application is applied to the camera module.
  • the camera module includes at least two camera units for capturing images, and at least one camera unit is the camera unit provided by the embodiment of the present application.
  • the camera unit 10 provided by the embodiment of the present application includes a first optical package 100 , a first magnetic member 200 , a second magnetic member 220 , a third magnetic member 240 , and a weight 260 .
  • the first magnetic member 200, the second magnetic member 220, the third magnetic member 240, and the weight 260 sequentially surround the first optical package 100 in a radial direction.
  • the first optical package 100 is an optical lens, an imaging lens, and a lens.
  • a collection of devices such as a bracket, the first optical package 100 is used to capture a static or dynamic image, and the image information is transmitted to a main board of the mobile terminal for processing, and the image information may be a photo or a video.
  • the first optical package 100 has an optical axis along the imaging direction, and the first magnetic member 200, the second magnetic member 220, the third magnetic member 240, and the weight 260 are symmetrically distributed around the optical axis.
  • the optical axis direction of the first optical package 100 is taken as the Z axis, and the plane perpendicular to the Z axis is the XY plane.
  • the first magnetic member 200 and the third magnetic member 240 are bipolar magnetism magnets disposed opposite to each other.
  • the second magnetic member 220 is a unipolar magnetism, the weight 260 is not magnetic, and the weight 260 is disposed opposite to the second magnetic member 220.
  • the weight 260 is located in the first optical package. Between 100 and another camera unit 10 of the camera module, a weight 260 is used to balance the weight of the second magnetic member 220.
  • FIG. 2 is a perspective view of the imaging unit 10 of FIG. 1 hiding the first optical package 100
  • FIG. 3 is a schematic diagram of the coil distribution of the imaging unit 10 in the XY plane.
  • the image capturing unit 10 further includes a first coil 320 between the first magnetic component 200 and the first optical package 100, and between the third magnetic component 240 and the first optical package 100.
  • the first coil 320 is used to interact with the magnetic fields generated by the first magnetic member 200 and the third magnetic member 240.
  • the number of the first coils 320 is two, and the two first coils 320 are symmetrically distributed on both sides of the first optical package 100.
  • the first coil 320 is wound about the Y-axis such that the direction of the Lorentz force generated by the first coil 320 when the current is input overlaps the Z-axis.
  • FIG. 7 is a working principle diagram of the imaging unit 10 in the YZ plane. The focusing process of the imaging unit 10 is as follows: when the first coil 320 is located in the magnetic field generated by the first magnetic member 200 and the third magnetic member 240. When the current is input, the first coil 320 generates a Lorentz force in the positive or negative direction along the Z axis (ie, the optical axis) under the action of the magnetic field, the first magnetic member 200 and the third magnetic member 240.
  • the mobile terminal to which the image pickup unit 10 is mounted is fixed in the Z-axis direction, so that the Lorentz force pushes the first coil 320 to move in the positive or negative direction of the Z-axis.
  • the first coil 320 is fixed on the first optical package 100, that is, the first coil 320 is integrally formed with the first optical package 100, and has the same degree of freedom, so that the Lorentz force pushes the first
  • the optical package 100 moves along the optical axis, and the first optical package 100 approaches or moves away from an object to be photographed, and adjusts the positional relationship between the focus of the first optical package 100 and an object to be photographed, thereby achieving a focusing operation.
  • the Lorentz force is along the positive direction of the Z-axis, and the magnitude and direction of the Lorentz force are based on the magnetic field distribution and the current in the first coil 320. Size and flow direction are determined.
  • FIG. 4 is a schematic diagram showing the distribution of the magnetic members of the imaging unit 10 in the XY plane
  • FIG. 5 is a schematic cross-sectional view of the first magnetic member 200 in the YZ plane.
  • the bipolar magnetized first magnetic member 200 and the third magnetic member 240 have four magnetic poles, that is, two pairs of N poles and S poles, and the magnetic fields formed by the first magnetic member 200 and the third magnetic member 240 are used to implement the image capturing unit.
  • the autofocus function of 10 the magnetic paths of the first magnetic member 200 and the third magnetic member 240 converge, reduce magnetic flux leakage, and prevent magnetic interference of the magnetic member for the autofocus function to the other camera unit 10 and the entire machine environment.
  • the first magnetic member 200 and the third magnetic member 240 each include a first magnetic portion 22 and a second magnetic portion 24 that are opposite in magnetic orientation, and the first magnetic portion 22 and the second magnetic portion 24 are along the first optical package 100.
  • the direction of the optical axis ie, the Z-axis direction
  • the first magnetic portion 22 is opposite to the magnetic orientation of the first magnetic portion 22 of the third magnetic member 240
  • the magnetic orientation of the second magnetic portion 24 of the first magnetic member 200 is opposite to that of the second magnetic portion 24 of the second magnetic member 220.
  • the specific meaning of the opposite magnetic orientation is as follows: In conjunction with FIG.
  • the direction of the arrow is magnetically oriented, and inside the first magnetic portion 22 or the second magnetic portion 24, the magnetic field lines are directed from the S pole to the N pole. Outside the first magnetic portion 22 or the second magnetic portion 24, the magnetic field lines are directed from the N pole to the S pole.
  • the magnetic orientation of the first magnetic portion 22 of the first magnetic member 200 is the positive direction of the Y-axis
  • the external magnetic orientation is the negative direction of the Y-axis
  • the magnetic orientation of the first magnetic portion 22 of the third magnetic member 240 is the negative direction of the Y-axis.
  • the magnetic orientation is the positive direction of the Y-axis such that the magnetic orientation of the first magnetic portion 22 of the first magnetic member 200 and the first magnetic portion 22 of the third magnetic member 240 are opposite; the magnetic property of the second magnetic portion 24 of the first magnetic member 200 is internal
  • the orientation is the negative direction of the Y-axis, and the external magnetic orientation is the positive direction of the Y-axis.
  • the magnetic orientation of the second magnetic portion 24 of the third magnetic member 240 is the positive direction of the Y-axis, and the external magnetic orientation is the negative direction of the Y-axis, so that the first magnetic member
  • the second magnetic portion 24 of 200 is opposite to the magnetic orientation of the second magnetic portion 24 of the second magnetic member 220.
  • the magnetic orientations of the first magnetic portion 22 and the second magnetic portion 24 of the first magnetic member 200 are opposite, and the magnetic orientations of the first magnetic portion 22 and the second magnetic portion 24 of the third magnetic member 240 are opposite.
  • the magnetic orientation of the first magnetic portion 22 is the positive direction of the Y axis
  • the external magnetic orientation is the negative direction of the Y axis
  • the magnetic orientation of the second magnetic portion 24 is the negative direction of the Y axis.
  • the external magnetic orientation is the positive direction of the Y-axis such that the magnetic orientations of the first magnetic portion 22 and the second magnetic portion 24 of the first magnetic member 200 are opposite.
  • the arrows indicate the magnetic orientation of the inside of the first magnetic member 200, the second magnetic member 220, and the third magnetic member 240.
  • two opposite arrows respectively indicate the first magnetic member 200.
  • the magnetic orientation of the first magnetic portion 22 and the second magnetic portion 24, that is, the magnetic orientation of the first magnetic portion 22 and the second magnetic portion 24 of the first magnetic member 200 are opposite;
  • the third magnetic member 240 two The opposite arrows respectively indicate the internal magnetic orientation of the first magnetic portion 22 and the second magnetic portion 24 of the third magnetic member 240, that is, the magnetic orientations of the first magnetic portion 22 and the second magnetic portion 24 of the third magnetic member 240 are opposite.
  • the first magnetic portion 22 and the second magnetic portion 24 having opposite magnetic orientations form a convergent magnetic field to reduce magnetic leakage, and the magnetic field formed by the first magnetic member 200 and the third magnetic member 240 interacts with the first coil 320 to realize an autofocus function. And the magnetic field converged by the first magnetic member 200 and the third magnetic member 240 prevents magnetic interference of the magnetic member for the autofocus function to the other camera unit 10 and the entire machine environment.
  • the first magnetic portion 22 and the second magnetic portion 24 are distributed along the Z-axis direction, the distance between the first magnetic portion 22 and the first optical package 100, and the second magnetic portion 24 and The distance of an optical package 100 is the same to make the magnetic field generated by the first magnetic member 200 or the third magnetic member 240 uniform.
  • the first magnetic portion 22 and the second magnetic portion 24 are formed of a neodymium iron boron material by a bipolar magnetization process.
  • the first magnetic member 200 and the second magnetic member 220 further include a non-magnetic portion 26, and the first magnetic portion 22 and the second magnetic portion 24 are fixedly connected by the non-magnetic portion 26.
  • the non-magnetic portion 26 is fixedly connected between the first magnetic portion 22 and the second magnetic portion 24 to form the first magnetic member 200 or the third magnetic member 240, and the non-magnetic portion 26 serves to isolate the first magnetic portion 22 from the first
  • the two magnetic portions 24 act to separate the first magnetic portion 22 from the second magnetic portion 24 by a predetermined distance, and prevent mutual magnetic interference between the magnetic fields formed by the first magnetic portion 22 and the second magnetic portion 24, respectively.
  • the first magnetic portion 22 and the second magnetic portion 24 each include a first end 20a facing the first optical package 100 and a second end 20b facing away from the first optical package 100, the first end 20a and The second end 20b is a magnetic pole of the first magnetic portion 22 or the second magnetic portion 24.
  • the magnetic pole includes an N pole and an S pole, and magnetic poles of the first magnetic portion 22 and the second magnetic portion 24 are distributed at both ends of the first magnetic member 200 and the third magnetic member 240 in the width direction, that is, along the Y-axis direction.
  • the first end 20a and the second end 20b form a magnetic field that interacts with the first coil 320 such that the Lorentz force of the first coil 320 of the input current is in the Z-axis direction.
  • FIG. 6 is a schematic cross-sectional view of the second magnetic member 220 in the XZ plane.
  • the unipolar magnetic second magnetic member 220 has two magnetic poles, that is, a pair of N poles and S poles, and the magnetic field formed by the second magnetic member 220 and the first magnetic member 200 and the third magnetic member 240 is used to implement the image capturing unit. 10 optical image stabilization.
  • the second magnetic member 220 includes a first side end 22a facing the first optical package 100 and a second side end 22b facing away from the first optical package 100.
  • the first side end 22a and the second side end 22b are The magnetic pole of the second magnetic member 220.
  • the magnetic pole includes an N pole and an S pole, and the first side end 22a and the second side end 22b are distributed at both ends of the second magnetic member 220 in the width direction, that is, along the X axis direction, to form an interaction with the second coil 340.
  • the magnetic field is such that the Lorentz force of the second coil 340 of the input current is along the X-axis direction.
  • the second magnetic member 220 is disposed at one end of the imaging unit 10 away from the other imaging unit 10, and reduces magnetic interference of the second magnetic member 220 to the other imaging unit 10, thereby reducing the magnetic component for the optical image stabilization function.
  • the first magnetic member 200, the second magnetic member 220, the third magnetic member 240, and the weight 260 are all elongated, and the longitudinal direction of the first magnetic member 200 and the third magnetic member 240 are along In the X-axis direction, the length direction of the second magnetic member 220 and the weight 260 is along the Y-axis direction.
  • the first optical package 100 includes a first sidewall 102 and a third sidewall 106 opposite to each other.
  • the first sidewall 102 faces the first magnetic member 200
  • the third sidewall 106 faces the third portion.
  • the magnetic component 240, the first coil 320 is wound around the first sidewall 102 and the third sidewall 106, so that the first coil 320 drives the first optical package 100 under the action of the Lorentz force to achieve focusing.
  • the purpose is that the fixing method is simple and easy.
  • the camera unit 10 further includes a second coil 340, and the second coil 340 is located on the same side of the first magnetic member 200, the second magnetic member 220, and the third magnetic member 240, and second.
  • the coil 340 is for interacting with the magnetic fields generated by the first magnetic member 200, the second magnetic member 220, and the third magnetic member 240.
  • the number of the second coils 340 is three, and one second coil 340 is disposed on one side of the first magnetic member 200, the second magnetic member 220, and the third magnetic member 240.
  • the first optical image stabilization is wound around the Z-axis such that the direction of the Lorentz force generated by the second coil 340 when the current is input overlaps the X-axis or the Y-axis.
  • the second coil 340 is located in the magnetic field generated by the first magnetic member 200 and the third magnetic member 240, and when the first optical package 100 is detected to be shaken and moved in the XY plane direction. At this time, the system inputs a current into the second coil 340.
  • the first coil 320 Under the action of the magnetic field, the first coil 320 generates a Lorentz force in the positive or negative direction along the Y-axis, thereby compensating for the jitter caused by the first optical package 100. Displacement to act as an optical anti-shake.
  • the Lorentz force under the magnetic field distribution shown in FIG. 7, according to the left-hand rule, is along the positive direction of the Y-axis.
  • the magnitude and direction of the Lorentz force are based on the magnetic field distribution. The magnitude and flow direction of the current in the second coil 340 is determined.
  • the first optical package 100 further includes a second sidewall 104 and a fourth sidewall 108 connecting the first sidewall 102 and the third sidewall 106, and the second sidewall 104 and the fourth sidewall 108 Relative settings.
  • the second side wall 104 faces the second magnetic member 220, and the second magnetic member 220 is a unipolar magnetism, that is, the second magnetic member 220 includes two magnetic poles, and the magnetic poles are distributed on the second magnetic member 220 facing the second One end of the side wall 104 and one end facing away from the second side wall 104, so that the magnetic field formed by the second magnetic member 220 passes through the second coil 340, and the Lorentz force generated by the second coil 340 after inputting current is in the X-axis direction.
  • the resultant force of the Lorentz force formed by the second coil 340 under the action of the first magnetic member 200, the second magnetic member 220 and the third magnetic member 240 compensates for the jitter displacement of the first optical package 100, thereby realizing the optical image stabilization function.
  • the fourth side wall 108 faces the counterweight
  • the weight 260 is used to balance the weight of the second magnetic member 220, and the weight 260 is non-magnetic, reducing magnetic interference with the other camera unit 10 and the overall environment.
  • the first magnetic member 200 and the third magnetic member 240 are bipolar magnets, which converge the magnetic paths of the first magnetic member 200 and the third magnetic member 240 to reduce magnetic leakage, and prevent magnetic components for the autofocus function.
  • the weight 260 is balanced with respect to the second magnetic member 220 to balance the weight of the second magnetic member 220, the weight 260 is non-magnetic, and the second magnetic member 220 is away from the other.
  • the camera unit 10 reduces the magnetic interference of the magnetic component for the optical image stabilization function on the other camera unit 10 and the whole environment, reduces the spacing of the two camera units 10, reduces the difficulty of assembling the camera module, and saves the operation.
  • the space of the whole machine environment is conducive to the minimization of the camera module.
  • the magnetic forces of the first magnetic member 200 and the third magnetic member 240 are equal, so that the first magnetic member 200, the second magnetic member 220, and the third magnetic member 240 generate the second coil.
  • the 340 produces a uniform Lorentz force, and is advantageous for adjusting the resultant force of the Lorentz force by adjusting the input current, thereby improving the optical anti-shake effect and improving the shooting effect.
  • the magnetic force of the second magnetic member 220 is twice that of the first magnetic member 200 to ensure that the second coil 340 can generate sufficient Lorentz force in the X-axis direction after inputting the current. Since the second magnetic member 220 is located on the side of the first optical package 100 away from the other imaging unit 10, even if the magnetic force of the second magnetic member 220 is increased, the other imaging unit 10 and the whole environment are not significantly improved. Magnetic interference.
  • the first magnetic member 200 and the third magnetic member 240 are symmetric with respect to the center of the first optical package 100.
  • the distance of the first magnetic component 200 from the corresponding first coil 320 is the same as the distance of the first coil 320 corresponding to the distance of the third magnetic component 240, and the magnetic force of the first magnetic component 200 and the third magnetic component 240 Similarly, when the autofocus operation is performed, the input current of the first coil 320 is easily controlled, and the Lorentz force for realizing the autofocus function is easily controlled.
  • the second magnetic member 220 and the weight 260 are symmetric with respect to the center of the first optical package 100. In one embodiment, the weight of the second magnetic member 220 and the weight 260 The same is to make the weight of the image pickup unit 10 uniform.
  • the embodiment of the present application further provides a camera module 30.
  • the camera module includes at least two camera units 10.
  • the camera module 30 of the first embodiment of the present invention includes a second optical package 400 and an imaging unit 10 , a second optical package 400 and a first optical package 100 .
  • the camera module 30 Located on opposite sides of the weight 260, the camera module 30 further includes a plurality of fourth magnetic members 600 radially distributed around the second optical package 400.
  • the fourth magnetic member 600 is used to generate a magnetic field to implement the second optical package.
  • the second optical package 400 is a collection of devices such as an optical lens, an imaging lens, and a lens holder.
  • the second optical package 400 is used to capture an image and transmit the image information to a main board of the mobile terminal for processing or the like.
  • the second optical package 400 includes an optical axis along a photographing direction, and the fourth magnetic member 600 is distributed around the optical axis.
  • the fourth magnetic member 600 realizes auto focus and optical protection of the second optical package 400.
  • the dithering function because the magnetic paths of the first magnetic member 200 and the third magnetic member 240 converge, the second magnetic member 220 is far away from the fourth magnetic member 600, and the magnetic interference between the two imaging units 10 is small, which is reduced.
  • the spacing of the two camera units 10 in the camera module 30 reduces the difficulty in assembling the camera module 30, saves space in the whole machine environment, and facilitates the minimization of the camera module 30.
  • FIG. 10 is a schematic diagram of a coil distribution of the camera module 30 in the XY plane.
  • the camera module 30 further includes a third coil 520.
  • the third coil 520 is radially wound on the surface of the second optical package 400, and the third coil 520 is used to interact with the magnetic field generated by the fourth magnetic member 600.
  • the second focus coil is wound around the Z axis On the second optical package 400, the direction of the Lorentz force generated by the third coil 520 when the current is input is overlapped with the Z axis.
  • the third coil 520 is located in the magnetic field generated by the fourth magnetic member 600.
  • the third coil 520 When the current is input into the third coil 520, the third coil 520 generates a Lorentz force in the positive or negative direction along the Z axis under the action of the magnetic field. , thereby pushing the second optical package 400 to perform a corresponding auto focus action.
  • the magnitude and direction of the Lorentz force is determined by the magnetic field distribution, the magnitude of the current in the third coil 520, and the direction of flow.
  • the camera module 30 further includes a fourth coil 540.
  • the fourth coil 540 is located on the same side of each of the fourth magnetic members 600, and the fourth coil 540 is configured to interact with the magnetic field generated by each of the fourth magnetic members 600.
  • the number of the fourth coils 540 is four, and one fourth coil 540 is disposed on one side of each of the fourth magnetic members 600.
  • the second optical image stabilization is wound around the Z-axis such that the direction of the Lorentz force generated by the fourth coil 540 when the current is input overlaps the X-axis or the Y-axis. Taking the Y-axis direction as an example, the fourth coil 540 is located in the magnetic field generated by the fourth magnetic member 600.
  • the third coil 520 When the current is input in the fourth coil 540, the third coil 520 generates a positive direction along the Y-axis or under the action of the magnetic field.
  • the Lorentz force in the negative direction compensates for the displacement caused by the jitter of the second optical package 400 to act as an optical anti-shake.
  • the magnitude and direction of the Lorentz force is determined by the magnetic field distribution, the magnitude and flow direction of the current in the fourth coil 540.
  • FIG. 11 is a schematic diagram showing the distribution of magnetic components of the camera module 30 in the XY plane.
  • the fourth magnetic member 600 is a unipolar magnetic magnet.
  • the fourth magnetic member 600 includes two magnetic poles, that is, a pair of N poles and S poles, and the arrow in FIG. 11 is the fourth magnetic member 600. Magnetic orientation.
  • the unipolar magnetism is made at a low cost
  • the second optical package 400 realizes an autofocus function in the magnetic field formed by the fourth magnetic member 600 through the third coil 520
  • the second optical package 400 passes through the fourth coil 540 at the fourth
  • the optical anti-shake function is realized in the magnetic field formed by the magnetic member 600.
  • the magnetic poles of the fourth magnetic member 600 are distributed at one end of the fourth magnetic member 600 facing the second optical package 400 and the end facing away from the optical package, and each of the fourth magnetic members 600 faces the second optical package.
  • the polarity of one end of 400 is the same.
  • the magnetic pole includes an N pole and an S pole, and the fourth magnetic member 600 forms a magnetic field that interacts with the third coil 520, so that the Lorentz force of the third coil 520 of the input current is along the Z-axis direction, so that the input current is The Lorentz force of the four coils 540 is along the X-axis or Y-axis direction.
  • the number of the fourth magnetic members 600 is four, and the fourth magnetic members 600 are arranged in an angular distribution.
  • the second optical package 400 has a square cross section.
  • the fourth magnetic members 600 are respectively located at positions corresponding to the four corners of the second optical package 400.
  • the distribution of the angular magnets makes the magnetic field formed by the fourth magnetic member 600 uniform, and the Lorentz force generated by the third coil 520 and the fourth coil 540 under the action of the magnetic field is easily controlled, thereby improving the effects of autofocus and optical anti-shake.
  • the minimum distance between the weight 260 and the fourth magnetic member 600 is not more than 1 mm. Since the magnetic interference between the two camera units 10 is small, the spacing of the camera unit 10 is not more than 1 mm, which reduces the difficulty in assembling the camera module 30, saves space in the whole environment, and is beneficial to the camera module 30. Minimized design.
  • the camera module 30 provided in the second embodiment of the present application includes two imaging units 10 provided by the embodiments of the present application, and the two imaging units 10 are symmetrically distributed, and FIG. 12 only shows the arrangement of the magnetic components. .
  • the magnetic paths of the first magnetic member 200 and the third magnetic member 240 of each imaging unit 10 converge to reduce magnetic flux leakage, thereby preventing magnetic interference of the magnetic member for the autofocus function on the other imaging unit 10 and the entire environment.
  • the weight 260 is balanced with respect to the second magnetic member 220 to balance the weight of the second magnetic member 220.
  • the weight 260 is non-magnetic, and the second magnetic member 220 is away from the other camera unit 10, thereby reducing the magnetic member for the optical image stabilization function.
  • the spacing of the unit 10 reduces the difficulty of assembling the camera module 30, saves space in the whole environment, and facilitates the minimization of the camera module 30.
  • the embodiment of the present application further provides a mobile terminal 80 , which includes the camera module 30 provided by the embodiment of the present application.
  • the camera module 30 is disposed on the mobile terminal 80 for capturing images and transmitting the image information to the system motherboard for processing or displaying through the display panel.
  • the mobile terminal 80 provided by the embodiment of the present application includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, and the like.
  • the magnetic paths of the first magnetic member 200 and the third magnetic member 240 converge to reduce magnetic flux leakage, preventing magnetic interference of the magnetic member for the autofocus function on the other imaging unit 10 and the whole environment, and the weight 260 is relatively
  • the two magnetic members 220 are arranged to balance the weight of the second magnetic member 220, the weight 260 is non-magnetic, and the second magnetic member 220 is away from the other camera unit 10, reducing the magnetic member for the optical image stabilization function to the other camera unit. 10 and the magnetic interference of the whole machine environment, the spacing of the two camera units 10 is reduced, the difficulty of assembling the camera module 30 is reduced, the space of the whole machine environment is saved, and the minimum design of the camera module 30 is facilitated.
  • the magnetic path convergence of the first magnetic member 200 and the third magnetic member 240 the magnetic flux leakage is reduced, and the magnetic interference of the dual camera module 30 to the peripheral components can also be reduced.
  • the earpiece or the speaker is disposed around the dual camera module 30. And other components. Due to the design of the magnetic circuit convergence, the distance between the dual camera module 30 and the peripheral components can be reduced without affecting the respective working effects. Therefore, the present application can also improve the space utilization ratio in the mobile terminal, so that the components are arranged between the components. The cloth can be more compact.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Adjustment Of Camera Lenses (AREA)
  • Studio Devices (AREA)
  • Lens Barrels (AREA)

Abstract

La présente invention concerne une unité de caméra, l'unité de caméra comprenant un premier corps d'emballage optique, un premier élément magnétique, un deuxième élément magnétique, un troisième élément magnétique, un contrepoids, et des premières bobines, le premier élément magnétique, le deuxième élément magnétique, le troisième élément magnétique et le contrepoids entourant de manière séquentielle radialement le premier corps d'emballage optique, les premières bobines étant réparties entre le premier élément magnétique et le premier corps d'emballage optique et entre le troisième élément magnétique et le premier corps d'emballage optique, le premier élément magnétique et le troisième élément magnétique étant disposés à l'opposé l'un de l'autre et les deux étant des aimants bipolaires, le deuxième élément magnétique étant un aimant unipolaire, et le contrepoids étant positionné entre le premier corps d'emballage optique et une autre unité de caméra d'un module de caméra, et étant utilisé pour équilibrer le poids du deuxième aimant. La présente invention concerne également un module de caméra et un terminal mobile. L'interférence magnétique et l'espacement entre deux unités de caméra sont tous deux réduits.
PCT/CN2017/091077 2016-12-14 2017-06-30 Unité de caméra, module de caméra, et terminal mobile WO2018107725A1 (fr)

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CN110784629B (zh) 2021-06-29
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CN110673296A (zh) 2020-01-10
CN110673296B (zh) 2022-05-17
CN108476283A (zh) 2018-08-31

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