WO2023221334A1 - 光学元件驱动装置、摄像装置及移动终端 - Google Patents

光学元件驱动装置、摄像装置及移动终端 Download PDF

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Publication number
WO2023221334A1
WO2023221334A1 PCT/CN2022/116403 CN2022116403W WO2023221334A1 WO 2023221334 A1 WO2023221334 A1 WO 2023221334A1 CN 2022116403 W CN2022116403 W CN 2022116403W WO 2023221334 A1 WO2023221334 A1 WO 2023221334A1
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WIPO (PCT)
Prior art keywords
base
optical element
rod body
driving device
element driving
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Application number
PCT/CN2022/116403
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English (en)
French (fr)
Inventor
王建华
张晓良
孔令宏
Original Assignee
上海信迈电子科技有限公司
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Publication of WO2023221334A1 publication Critical patent/WO2023221334A1/zh

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Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00Mountings, adjusting means, or light-tight connections, for optical elements
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/023Mountings, adjusting means, or light-tight connections, for optical elements for lenses permitting adjustment
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G02B7/09Mountings, 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
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B30/00Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles

Definitions

  • the present invention relates to the field of imaging devices, and specifically, to an optical element driving device, a imaging device and a mobile terminal.
  • Video cameras or still cameras usually use lenses with adjustable focus or autofocus, and the adjustment process involves changing the position of the lens or image sensor.
  • a drive motor is usually used to drive the movement of the lens and image sensor.
  • VCM Voice Coil Motor
  • a voice coil motor is a system composed of coils and magnets. The energized coil will experience electromagnetic force in the magnetic field. Due to the electromagnetic force, the winding carrier is driven to move linearly along the direction of the optical axis of the lens (i.e., the Z axis). The winding carrier eventually stays between the annular coil and the driving magnet to generate The position point when the resultant force of the electromagnetic force and the elastic force of the upper spring and the lower spring reaches a balanced state.
  • the voice coil motor has the advantages of mature technology, low cost, and low noise, as the camera requirements of camera devices increase, the voice coil motor has problems such as magnetic interference, insufficient thrust, and unstable structure and performance.
  • dual-camera motors have been developed and used in various mid-to-high-end mobile phones, but there are certain difficulties and difficulties in the actual application process.
  • there is a certain degree of magnetic interference between the two dual-camera motors which affects the effect of the dual-camera motors. Normally functioning, the voice coil motor cannot avoid this defect.
  • the main purpose of the present invention is to provide an optical element driving device, a camera device and a mobile terminal to solve the problem of poor performance of the driving device of the camera device in the prior art.
  • an optical element driving device including: a housing; a base, the housing cover is disposed on the base and forms an accommodation space with the base; and a bearing base, which is movable.
  • a ball is provided inside the accommodation space, and the side of the base facing the bearing seat is provided with a ball.
  • the bearing seat is in movable contact with the ball;
  • the base is driven and connected; the driving assembly is driven and connected with the lever assembly; when the driving assembly is powered on, at least part of the driving assembly moves relative to the base and drives the lever assembly to rotate relative to the base to drive the bearing base to slide relative to the balls and relative to the Z Shaft deflection.
  • the lever assembly includes at least two groups of rods, each group of rods includes two rods arranged symmetrically about the center of the bearing seat, the rods are drivingly connected to the bearing seat, and the two ends of the rods are respectively the connecting end and the movable end.
  • the connection of the rods The end is movably connected to the base so that the rod body can rotate relative to the base.
  • the two rods in each group are correspondingly arranged on a set of mutually parallel sides of the base; and/or among the two adjacent rods in different groups, the movable end of one rod is close to the connecting end of the other rod. connection settings.
  • one of the side walls of the rod body corresponding to the bearing seat in the length direction of the rod body has a driving protrusion, and the other has a driving groove.
  • the extending direction of the driving groove is the same as the length direction of the rod body, and the driving protrusion extends into the driving groove. groove, when the rod body rotates relative to the base, the driving protrusion moves along the driving groove.
  • the rod body has a driving groove
  • the bearing seat has a driving protrusion
  • the side wall of the bearing seat corresponding to the rod body has a mounting groove extending along the length direction of the rod body or a plurality of mounting holes spaced apart along the length direction of the rod body, and the driving protrusion
  • the raised end is fixedly arranged in the installation groove or detachably arranged on any one of the plurality of installation holes.
  • the lever assembly also includes a plurality of rotating shafts, the rotating shafts correspond to the rod body one-to-one, and the connecting end of the rod body is movably connected to the base through the rotating shaft.
  • the driving component includes: a first wire, the first wire is a plurality of FPC boards, at least a part of the FPC boards is arranged in the accommodation space, the first end of the first wire is connected to the connecting end of the rod body, and the first wire is The second end extends toward the length direction of the rod body and is connected to the FPC board.
  • the optical element driving device further includes a plurality of chucks, and different first wires are connected to the FPC board through different chucks.
  • FPC boards there are multiple FPC boards, and different FPC boards correspond to different rod bodies respectively.
  • the FPC board includes a first connection section, a second connection section and a third connection section.
  • the second connection section and the third connection section are respectively connected to the first connection section, and the second connection section is away from one end of the first connection section.
  • one end of the third connecting section away from the first connecting section has a claw, the claw is connected to the connecting end of the rod body, and the first wire is connected to the rod body through the claw.
  • one end of the third connecting section away from the first connecting section is a deformable end formed by bending.
  • the base is provided with a mounting column corresponding to the connecting end and the movable end of the rod body.
  • the connecting end of the rod body is movably connected to the mounting column.
  • the chuck is arranged on the mounting column corresponding to the movable end of the rod body, and the two opposite mounting columns of the same mounting column are The adjacent side surfaces respectively correspond to the connecting ends and movable ends of different rod bodies.
  • the optical element driving device further includes a pressing piece, which is arranged on a side of the carrying base away from the base and connected to the mounting column to provide a restoring force for the carrying base to move toward the base.
  • the optical element driving device further includes a mounting base, the mounting base is disposed between the base and the bearing base, and the mounting base has a receiving groove for placing the ball, the ball is disposed on the base through the mounting base, and at least a part of the ball Located in the accommodation groove, at least another part of the ball protrudes from the accommodation groove.
  • the accommodating groove is located in the center of the mounting base.
  • a camera device includes the above-mentioned optical element driving device.
  • a mobile terminal includes the above-mentioned camera device.
  • the optical element driving device in this application includes a housing, a base, a bearing base, a lever assembly, and a driving assembly.
  • the outer housing is covered on the base and forms an accommodation space with the base; the bearing base is movable.
  • Balls are provided inside the accommodation space, and the side of the base facing the bearing seat is provided with balls, and the bearing seat is in movable contact with the balls; at least part of the lever assembly is rotatably disposed on the base, and the lever assembly is drivingly connected to the bearing seat;
  • the driving assembly is drivingly connected to the lever assembly; when the driving assembly is powered on, at least part of the driving assembly moves relative to the base and drives the lever assembly to rotate relative to the base to drive the bearing base to slide relative to the balls and deflect relative to the Z-axis.
  • the optical elements in the camera module are installed on the bearing base. Since the lever assembly is rotatably disposed on the base and the lever assembly is drivingly connected to the bearing base, when the lever When the component rotates relative to the base, it can drive the bearing seat to roll relative to the balls and deflect relative to the Z-axis, thereby changing the tilt direction and angle of the bearing seat, thereby achieving the lens module's tilt-shift anti-shake correction. Moreover, in this application, since the driving component is drivingly connected to the lever assembly, the driving component can drive the lever assembly to move relative to the base after the driving component is powered on.
  • the driving coil and driving magnet parts of the original voice coil motor are replaced by the lever assembly and the driving assembly of the optical element driving device.
  • the structure of the optical element driving device in the present application is simpler than that of the existing voice coil motor.
  • the optical element driving device in this application has no magnetic circuit design problems, and the average thrust during the entire stroke is greater than that of the electromagnetic method, so it is more efficient than the existing voice coil motor.
  • the optical element driving device in the present application effectively solves the problem of poor performance of the driving device of the imaging device in the prior art.
  • Figure 1 shows a schematic structural diagram of an optical element driving device according to a specific embodiment of the present invention
  • Figure 2 shows an exploded view of the optical element driving device in Figure 1;
  • Figure 3 shows a schematic diagram of the internal structure of the optical element driving device in Figure 1;
  • Figure 4 shows a schematic diagram of the positional relationship between the balls and the mounting base of the optical element driving device in Figure 1;
  • Figure 5 shows a schematic diagram of the positional relationship between the lever assembly, the driving assembly and the bearing base of the optical element driving device in Figure 1;
  • FIG. 6 shows a schematic diagram of the positional relationship between the bearing seat, the ball and the mounting seat of the optical element driving device in FIG. 1 .
  • the directional words used such as “up, down, top, bottom” usually refer to the direction shown in the drawings, or refer to the vertical or vertical position of the component itself. Vertically or in the direction of gravity; similarly, for ease of understanding and description, “inside and outside” refers to the inside and outside relative to the outline of each component itself, but the above directional terms are not used to limit the present invention.
  • the present application provides an optical element driving device, a camera device and a mobile terminal.
  • the mobile terminal in this application has a camera device, and the camera device in this application has the following optical element driving device.
  • the optical element driving device in this application includes a housing 10 , a base 20 , a bearing seat 30 , a lever assembly 40 and a driving assembly 50 .
  • the shell 10 is covered on the base 20 and forms an accommodation space between the base 20 and the base 20; the bearing seat 30 is movably arranged inside the accommodation space, and the base 20 is provided with balls 90 on one side facing the bearing seat 30, and the bearing seat 30 and The balls 90 are in movable contact; at least part of the lever assembly 40 is rotatably disposed on the base 20 , and the lever assembly 40 is drivingly connected to the bearing seat 30 ; the driving assembly 50 is drivingly connected to the lever assembly 40 ; when the driving assembly 50 is powered on , at least part of the driving assembly 50 moves relative to the base 20 and drives the lever assembly 40 to rotate relative to the base 20 to drive the bearing base 30 to slide relative to the ball 90 and deflect relative to the Z-axis.
  • the optical elements in the camera module are installed on the bearing base 30. Since the lever assembly 40 is rotatably disposed on the base 20 and the lever assembly 40 is drivingly connected to the bearing base 30 , so when the lever assembly 40 rotates relative to the base 20, it can drive the bearing seat 30 to slide relative to the top arc surface of the ball 90 and deflect relative to the Z-axis, thereby changing the tilt direction and angle of the bearing seat, thereby realizing the lens module. Tilt-shift anti-shake correction. Moreover, in this application, since the driving component 50 is drivingly connected to the lever assembly 40, the driving component 50 can drive the lever assembly 40 to move relative to the base 20 after the driving component 50 is powered on.
  • the driving coil and driving magnet parts of the original voice coil motor are replaced by the lever assembly 40 and the driving assembly 50 of the optical element driving device.
  • the structure of the optical element driving device in the present application is simpler than that of the existing voice coil motor.
  • the optical element driving device in this application has no magnetic circuit design problems, and the average thrust during the entire stroke is greater than that of the electromagnetic method, so it is more efficient than the existing voice coil motor.
  • the optical element driving device in the present application effectively solves the problem of poor performance of the driving device of the imaging device in the prior art.
  • both the housing 10 and the base 20 have opening structures for avoiding the lens of the mobile terminal.
  • the lever assembly 40 includes at least two groups of rods 41.
  • Each group of rods 41 includes two rods 41 arranged symmetrically about the center of the bearing base 30.
  • the rods 41 are drivingly connected to the bearing base 30, and the rods 41 are drivingly connected to the bearing base 30.
  • the two ends of the rod 41 are a connecting end 411 and a movable end 412 respectively.
  • the connecting end 411 of the rod 41 is movably connected to the base 20 so that the rod 41 can rotate relative to the base 20 . That is to say, in this embodiment, the movement of the bearing base 30 is realized through the rotation of the four rods 41 .
  • the rotation angle of at least one of the four rods 41 is different from that of the other rods 41 to ensure that the bearing seat 30 can be changed. tilt direction and angle.
  • each group of two rods 41 is correspondingly arranged on a group of mutually parallel sides of the base 20 .
  • the movable end 412 of one rod 41 is arranged close to the connecting end 411 of the other rod 41. This arrangement can ensure that the internal structure of the optical element driving device is more precise. It is compact and can also ensure the stability of the bearing base 30 when moving relative to the base 20 .
  • the base 20 is generally quadrangular, with two groups of four rods 41 respectively disposed on two groups of opposite sides, and the two adjacent rods 41 are adjacent from end to end.
  • the base 20 can also be configured in other shapes according to actual usage requirements.
  • one of the side walls of the rod body 41 corresponding to the rod body 41 and the bearing seat 30 has a driving protrusion 60
  • the other has a driving groove 70
  • the extending direction of the driving groove 70 is in the same direction as the length direction of the rod body 41 .
  • the driving protrusion 60 extends into the driving groove 70 , and when the rod 41 rotates relative to the base 20 , the driving protrusion 60 moves along the driving groove 70 .
  • the rod body 41 has a driving groove 70
  • the bearing seat 30 has a driving protrusion 60
  • the side wall of the bearing seat 30 corresponding to the rod body 41 has a mounting groove or multiple mounting grooves extending along the length direction of the rod body 41.
  • the bearing base 30 has only one driving protrusion 60 on one side corresponding to each rod body 41, and after determining the mounting hole 31 where the driving protrusion 60 is located, the driving protrusion 60 does not It can then be removed from the mounting hole 31 to ensure the stability between the bearing seat 30 and the rod body 41 .
  • the purpose of providing multiple mounting holes 31 in this application is mainly to adjust the sensitivity of the rod body 41 in driving the bearing base 30. Therefore, after determining the mounting hole 31 where the driving protrusion 60 is located, it is The connection position of the driving protrusion 60 and the rod body 41 is determined, thereby determining the sensitivity of the rod body 41 in driving the bearing seat 30 .
  • the lever assembly 40 further includes a plurality of rotating shafts 42 , the rotating shafts 42 correspond to the rod body 41 one-to-one, and the connecting end 411 of the rod body 41 is movably connected to the base 20 through the rotating shafts 42 .
  • This arrangement can ensure that the rod body 41 can rotate relative to the base 20 more flexibly.
  • the driving assembly 50 includes: a plurality of first wires 51; an FPC board 53; at least a part of the FPC board 53 is disposed in the accommodation space; the first wires 51 are The first end is connected to the connecting end 411 of the rod body 41 , and the second end of the first wire 51 extends toward the length direction of the rod body 41 and is connected to the FPC board 53 .
  • the rod 41 rotates under the action of the first wire 51, and the direction of rotation is that the movable end 412 of the rod 41 moves in a direction close to the base 20, and by making different first
  • the different energization amounts of the wires can ensure that the rotation angles of different rods 41 are different, thereby changing the tilt direction and angle of the bearing base, thereby realizing the anti-shake correction of the lens module in a tilt-shift manner.
  • the first wire 51 when the first wire 51 is not energized, the first wire 51 can be arranged parallel to the rod body 41 .
  • the first wire 51 and the rod body 41 can also be arranged at an included angle.
  • the optical element driving device further includes a plurality of chucks 80 , and different first wires 51 are connected to the FPC board 53 through different chucks 80 .
  • the connection between the clamp 80 and the FPC board 53 is achieved by welding.
  • FPC boards 53 there are multiple FPC boards 53 , and different FPC boards 53 correspond to different rod bodies 41 respectively.
  • the FPC board 53 includes a first connecting section 531, a second connecting section 532, and a third connecting section 533.
  • the second connecting section 532 and the third connecting section 533 are respectively connected with the first connecting section 531.
  • the end of the second connecting section 532 away from the first connecting section 531 is connected to the chuck 80
  • the end of the third connecting section 533 away from the first connecting section 531 has a claw 534
  • the claw 534 is connected to the connecting end 411 of the rod 41
  • the first wire 51 is connected to the rod body 41 through the claw 534 .
  • one end of the third connecting section 533 away from the first connecting section 531 is a deformable end formed by bending.
  • the side wall of the base 20 has an escape groove 21 for avoiding the first connecting section 531 , and at least a part of the first connecting section 531 is disposed in the escape groove 21 .
  • This arrangement can ensure that the overall structure of the optical element driving device is more compact.
  • the base 20 is respectively provided with a mounting post 22 corresponding to the connecting end 411 and the movable end 412 of the rod body 41.
  • the connecting end 411 of the rod body 41 is movably connected to the mounting column 22.
  • the chuck 80 is installed at the corresponding movable end 412 of the rod body 41. on the pole 22, and two adjacent side surfaces of the same mounting pole 22 respectively correspond to the connecting end 411 and the movable end 412 of different rod bodies 41.
  • the bottom surface of the base 20 facing the bearing seat 30 is quadrangular, and a mounting column 22 is provided at each corner of the quadrilateral, and each two different mounting columns 22 correspond to one
  • the connecting end 411 and the movable end 412 of the rod body 41, and the mounting column 22 and the surface of the base 20 on which it is located are perpendicular to each other.
  • the optical element driving device further includes a pressing piece 100 .
  • the pressing piece 100 is disposed on the side of the carrying base 30 away from the base 20 and is connected to the mounting post 22 to provide the bearing base 30 with an orientation.
  • the restoring force of the movement of the base 20 when the first wire 51 is in a non-energized state, the pressing piece 100 can be used to provide a pre-tightening force for the bearing seat 30, so that the first wire 51 switches from the energized state to the de-energized state. Provide a restoring force for the bearing base 30 .
  • the optical element driving device further includes a mounting base 200.
  • the mounting base 200 is disposed between the base 20 and the carrying base 30.
  • the mounting base 200 has a receiving groove 300 for placing the ball 90.
  • the ball 90 is disposed through the mounting base 200.
  • On the base 20 at least a part of the ball 90 is located in the accommodating groove 300 , and at least another part of the ball 90 protrudes from the accommodating groove 300 .
  • the receiving groove 300 is located in the center of the mounting base 200 .
  • the accommodating groove 300 can also be directly provided on the base. That is to say, the mounting base may not be provided in this application.
  • the housing 10 is made of plastic material.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lens Barrels (AREA)

Abstract

一种光学元件驱动装置、摄像装置及移动终端。光学元件驱动装置包括:外壳(10);底座(20),外壳(10)罩设在底座(20)上并与底座(20)之间形成容置空间;承载座(30),承载座(30)活动设置在容置空间的内部,且底座(20)朝向承载座(30)的一侧设置有滚珠(90),承载座(30)与滚珠(90)活动接触;拨杆组件(40),拨杆组件(40)的至少一部分可转动地设置在底座(20)上,且拨杆组件(40)与承载座(30)驱动连接;驱动组件(50),驱动组件(50)与拨杆组件(40)驱动连接;当驱动组件(50)通电后,驱动组件(50)的至少一部分相对底座(20)运动,并带动拨杆组件(40)相对底座(20)转动,以驱动承载座(30)相对滚珠(90)滑动并相对Z轴偏斜。摄像装置的驱动装置使用性能高。

Description

光学元件驱动装置、摄像装置及移动终端 技术领域
本发明涉及摄像装置领域,具体而言,涉及一种光学元件驱动装置、摄像装置及移动终端。
摄像机或者照相机,通常会采用焦距可调或者自动对焦的镜头,而调节的过程则是改变镜头或图像传感器的位置,用于驱动镜头和图像传感器移动通常是用驱动马达。目前,手持式摄像装置—尤其是手机的摄像头的自动调焦基本全部使用音圈电机(Voice Coil Motor,VCM)来完成,音圈马达是一个由线圈和磁石组成的系统。通电后的线圈在磁场中会受到电磁力,由于电磁力的作用驱使绕线载体沿镜头光轴方向(即Z轴)作直线移动,绕线载体最终停留于环状线圈与驱动磁石之间产生的电磁力与上弹簧及下弹簧的弹性力的合力达到相均衡状态时的位置点。
虽然音圈电机具有技术成熟、成本低、噪音低等优点,但是随着摄像装置对摄像要求的增加,音圈电机在存在磁干扰、推力不足、结构及性能不稳定的问题。例如:双摄马达被开发应用于各种中高端手机中,但实际运用过程中存在一定的困扰难点,特别是两颗双摄马达彼此间存在一定程度的磁干扰现象,影响双摄马达效果的正常发挥,音圈马达无法避免该缺陷,同时,各种改进方案都容易造成马达结构复杂,组装工艺难度的提升;音圈马达中各个部品之间的电气性导通和连接组装均通过焊接、热铆、点胶等方式实现,同时线圈通电需要通过上/下弹簧连通,导致线圈通电的通路较长,由于音圈马达部品数较多,需要焊接、热铆、点胶处较多,当手机一旦在受到跌落撞击等外力时,马达由于外力震荡容易导致内部焊接点或点胶处拉扯脱落或弹簧变形等现象,最终马达内部的电气性能和组合结构受到破坏,影响马达正常性能的发挥,给拍摄效果带来不利后果。
因此,现有技术中存在摄像装置的驱动装置使用性能差的问题。
本发明的主要目的在于提供一种光学元件驱动装置、摄像装置及移动终端,以解决现有技术中摄像装置的驱动装置使用性能差的问题。
为了实现上述目的,根据本发明的一个方面,提供了一种光学元件驱动装置,包括:外壳;底座,外壳罩设在底座上并与底座之间形成容置空间;承载座,承载座活动设置在容置空间的内部,且底座朝向承载座的一侧设置有滚珠,承载座与滚珠活动接触;拨杆组件,拨杆组件的至少一部分可转动地设置在底座上,且拨杆组件与承载座驱动连接;驱动组件,驱动组件与拨杆组件驱动连接;当驱动组件通电后,驱动组件的至少一部分相对底座运动,并带动拨杆组件相对底座转动,以驱动承载座相对滚珠滑动并相对Z轴偏斜。
进一步地,拨杆组件包括至少两组杆体,每组杆体包括两个关于承载座中心对称设置的杆体,杆体与承载座驱动连接,且杆体的两端分别为连接端和活动端,杆体的连接端与底座活动连接,以使杆体能够相对底座转动。
进一步地,每组的两个杆体对应设置在底座的一组相互平行的侧边上;和/或不同组的相邻的两个杆体中,其中一个杆体的活动端相对连接端靠近另一个杆体的连接端设置。
进一步地,杆体的长度方向上和承载座对应杆体的侧壁中的一者具有驱动凸起,另一者具有驱动槽,驱动槽的延伸方向与杆体的长度方向相同,驱动凸起伸入驱动槽,当杆体相对底座转动时,驱动凸起沿驱动槽运动。
进一步地,杆体具有驱动槽,承载座具有驱动凸起,且承载座对应杆体的侧壁上具有沿杆体的长度方向延伸的安装槽或者多个沿杆体的长度方向间隔设置的安装孔,驱动凸起的一端固定设置在安装槽内或者可拆卸地设置在多个安装孔中的任意一个安装孔上。
进一步地,拨杆组件还包括多个旋转轴,旋转轴与杆体一一对应,且杆体的连接端通过旋转轴与底座活动连接。
进一步地,驱动组件包括:第一丝线,第一丝线为多个FPC板,FPC板的至少一部分设置在容置空间内,第一丝线的第一端与杆体的连接端连接,第一丝线的第二端朝向杆体的长度方向延伸并与FPC板连接。
进一步地,光学元件驱动装置还包括多个夹头,不同的第一丝线通过不同的夹头与FPC板连接。
进一步地,FPC板为多个,且不同的FPC板分别与不同的杆体对应。
进一步地,FPC板包括第一连接段、第二连接段和第三连接段,第二连接段和第三连接段分别与第一连接段连接,且第二连接段远离第一连接段的一端与夹头连接,第三连接段远离第一连接段的一端具有卡爪,卡爪与杆体的连接端连接,第一丝线通过卡爪与杆体连接。
进一步地,第三连接段远离第一连接段的一端是通过弯折形成的可变形端。
进一步地,底座对应杆体的连接端和活动端分别设置有安装柱,杆体的连接端与安装柱活动连接,夹头设置在杆体的活动端对应的安装柱上,且同一安装柱的两个相邻的侧面分别对应不同的杆体的连接端和活动端。
进一步地,光学元件驱动装置还包括压片,压片设置在承载座远离底座的一侧并与安装柱连接,以为承载座提供朝向底座运动的复位力。
进一步地,光学元件驱动装置还包括安装座,安装座设置在底座和承载座之间,且安装座具有用于放置滚珠的容置槽,滚珠通过安装座设置在底座上,且滚珠的至少一部分位于容置槽,滚珠的至少另一部分凸出与容置槽。
进一步地,容置槽位于安装座的中心。
根据本发明的另一方面,提供了一种摄像装置,摄像装置包括上述的光学元件驱动装置。
根据本发明的另一方面,提供了一种移动终端,移动终端包括上述的摄像装置。
应用本发明的技术方案,本申请中的光学元件驱动装置包括外壳、底座,承载座,拨杆组件,驱动组件,外壳罩设在底座上并与底座之间形成容置空间;承载座活动设置在容置空间的内部,且底座朝向承载座的一侧设置有滚珠,承载座与滚珠活动接触;拨杆组件的至少一部分可转动地设置在底座上,且拨杆组件与承载座驱动连接;驱动组件与拨杆组件驱动连接;当驱动组件通电后,驱动组件的至少一部分相对底座运动,并带动拨杆组件相对底座转动,以驱动承载座相对滚珠滑动并相对Z轴偏斜。
使用本申请中的光学元件驱动装置时,将摄像模组内的光学元件安装在承载座上,由于拨杆组件可转动地设置在底座上并且拨杆组件与承载座驱动连接,所以当拨杆组件相对底座座转动时,能够带动承载座相对滚珠滚动并相对Z轴偏斜,从而改变承载座的倾斜方向和角度,进而实现镜头模组的移轴方式防抖修正。并且,在本申请中由于驱动组件与拨杆组件驱动连接,所以在驱动组件通电后能够带动拨杆组件相对底座运动。也就是说,在本申请中,通过光学元件驱动装置的拨杆组件和驱动组件代替了原有的音圈马达中的驱动线圈和驱动磁石部分。并且,由于本申请中不再需要与驱动磁石和驱动线圈相配合的弹簧等结构,所以本申请中的光学元件驱动装置相对现有的音圈马达的结构更加简单。同时还不存在磁铁,所以不会产生对内或对外的磁干扰问题。并且,本申请中的光学元件驱动装置没有磁路设计问题,整个行程力度平均推力较电磁方式大,因此与现有的音圈马达相比更有效率。并且,没有音圈马达的上、下弹簧设计,跌落和滚筒等测试不会有弹簧变形、镍或异物脱落问题。因此,本申请中的光学元件驱动装置有效地解决了现有技术中摄像装置的驱动装置使用性能差的问题。
构成本申请的一部分的说明书附图用来提供对本发明的进一步理解,本发明的示意性实施例及其说明用于解释本发明,并不构成对本发明的不当限定。在附图中:
图1示出了根据本发明的一个具体实施例的光学元件驱动装置的结构示意图;
图2示出了图1中的光学元件驱动装置的爆炸图;
图3示出了图1中的光学元件驱动装置的内部结构示意图;
图4示出了图1中的光学元件驱动装置的滚珠和安装座之间的位置关系示意图;
图5示出了图1中的光学元件驱动装置的拨杆组件、驱动组件、承载座之间的位置关系示意图;
图6示出了图1中的光学元件驱动装置的承载座、滚珠以及安装座之间的位置关系示意图。
其中,上述附图包括以下附图标记:
10、外壳;20、底座;21、避让槽;22、安装柱;30、承载座;31、安装孔;40、拨杆组件;41、杆体;411、连接端;412、活动端;42、旋转轴;50、驱动组件;51、第一丝线;53、FPC板;531、第一连接段;532、第二连接段;533、第三连接段;534、卡爪;60、驱动凸起;70、驱动槽;80、夹头;90、滚珠;100、压片;200、安装座;300、容置槽;400、镜头。
需要说明的是,在不冲突的情况下,本申请中的实施例及实施例中的特征可以相互组合。下面将参考附图并结合实施例来详细说明本发明。
需要指出的是,除非另有指明,本申请使用的所有技术和科学术语具有与本申请所属技术领域的普通技术人员通常理解的相同含义。
在本发明中,在未作相反说明的情况下,使用的方位词如“上、下、顶、底”通常是针对附图所示的方向而言的,或者是针对部件本身在竖直、垂直或重力方向上而言的;同样地,为便于理解和描述,“内、外”是指相对于各部件本身的轮廓的内、外,但上述方位词并不用于限制本发明。
为了解决现有技术中摄像装置的驱动装置使用性能差的问题,本申请提供了一种光学元件驱动装置、摄像装置及移动终端。
需要指出的是,本申请中的移动终端具有摄像装置,并且,本申请中的摄像装置具有下述的光学元件驱动装置。
如图1至图6所示,本申请中的光学元件驱动装置包括外壳10、底座20、承载座30、拨杆组件40以及驱动组件50。外壳10罩设在底座20上并与底座20之间形成容置空间;承载座30活动设置在容置空间的内部,且底座20朝向承载座30的一侧设置有滚珠90,承载座30与滚珠90活动接触;拨杆组件40的至少一部分可转动地设置在底座20上,且拨杆组件40与承载座30驱动连接;驱动组件50与拨杆组件40驱动连接;当驱动组件50通电后,驱动组件50的至少一部分相对底座20运动,并带动拨杆组件40相对底座20转动,以驱动承载座30相对滚珠90滑动并相对Z轴偏斜。
使用本申请中的光学元件驱动装置时,将摄像模组内的光学元件安装在承载座30上,由于拨杆组件40可转动地设置在底座20上并且拨杆组件40与承载座30驱动连接,所以当拨杆组件40相对底座20座转动时,能够带动承载座30相对滚珠90顶部弧形面滑动并相对Z轴偏斜,从而改变承载座的倾斜方向和角度,进而实现镜头模组的移轴方式防抖修正。并且,在本申请中由于驱动组件50与拨杆组件40驱动连接,所以在驱动组件50通电后能够带动拨杆组件40相对底座20运动。也就是说,在本申请中,通过光学元件驱动装置的拨杆组件40和驱动组件50代替了原有的音圈马达中的驱动线圈和驱动磁石部分。并且,由于本申请中不再需要与驱动磁石和驱动线圈相配合的弹簧等结构,所以本申请中的光学元件驱动装置相对现有的音圈马达的结构更加简单。同时还不存在磁铁,所以不会产生对内或对外的磁干扰问题。并且,本申请中的光学元件驱动装置没有磁路设计问题,整个行程力度平均推力较电磁方式大,因此与现有的音圈马达相比更有效率。并且,没有音圈马达的上、下弹簧设计,跌落和滚筒等测试不会有弹簧变形、镍或异物脱落问题。因此,本申请中的光学元件驱动装置有效地解决了现有技术中摄像装置的驱动装置使用性能差的问题。
需要说明的是,上述中的光学元件一般指的是镜头或者图像传感器。在本申请中当光学元件是镜头400时,外壳10、底座20均具有用于避让移动终端的镜头的开口结构。
在本申请的一个具体实施例中,拨杆组件40包括至少两组杆体41,每组杆体41包括两个关于承载座30中心对称设置的杆体41,杆体41与承载座30驱动连接,且杆体41的两端分别为连接端411和活动端412,杆体41的连接端411与底座20活动连接,以使杆体41能够相对底座20转动。也就是说,在本实施例中承载座30的运动是通过四个杆体41的转动实现的。并且,需要说明的是,当通过四个杆体41带动承载座30相对底座20运动时,四个杆体41中的至少一个杆体41的转动角度与其他的杆体41不同,以保证能够改变承载座30的倾斜方向和角度。
可选地,每组的两个杆体41对应设置在底座20的一组相互平行的侧边上。并且,不同组的相邻的两个杆体41中,其中一个杆体41的活动端412相对连接端411靠近另一个杆体41的连接端411设置通过这样设置,能够保证光学元件驱动装置的内部结构更加紧凑,并且还能够保证承载座30在相对底座20运动时的稳定性。
也就是说,在本申请中底座20一般呈四边形,两组的四个杆体41分别设置在两组相对的侧边上,并且相邻的两个杆体41的首尾相邻。
当然,根据实际的使用需求也可以将底座20设置成其他形状的。
可选地,杆体41的长度方向上和承载座30对应杆体41的侧壁中的一者具有驱动凸起60,另一者具有驱动槽70,驱动槽70的延伸方向与杆体41的长度方向相同,驱动凸起60伸入驱动槽70,当杆体41相对底座20转动时,驱动凸起60沿驱动槽70运动。
可选地,杆体41具有驱动槽70,承载座30具有驱动凸起60,且承载座30对应杆体41的侧壁上具有沿杆体的长度方向延伸的安装槽或者多个沿杆体41的长度方向间隔设置的安装孔31,驱动凸起60的一端固定设置在安装槽内或者可拆卸地设置在多个安装孔31中的任意一个安装孔31上。也就是说,在本申请中承载座30承载光学元件的部分与驱动凸起60可以是呈分体设置的。
在本申请的一个具体实施例中,承载座30上对应每个杆体41的一侧均仅具有一个驱动凸起60,并且在确定驱动凸起60所在的安装孔31后,驱动凸起60不再能够从安装孔31上卸下,以保证承载座30与杆体41之间的稳定性。并且,需要说明的是,在本申请中设置多个安装孔31的目的主要是用来调节杆体41对承载座30驱动的灵敏度,因此在确定驱动凸起60所在的安装孔31后,也就确定了驱动凸起60与杆体41的连接位置,进而确定了杆体41驱动承载座30的灵敏度。
优选地,拨杆组件40还包括多个旋转轴42,旋转轴42与杆体41一一对应,且杆体41的连接端411通过旋转轴42与底座20活动连接。通过这样设置能够保证杆体41能够更加灵活地相对底座20转动。
在本申请的一个具体实施例中,驱动组件50包括:第一丝线51,第一丝线51为多个;FPC板53,FPC板53的至少一部分设置在容置空间内,第一丝线51的第一端与杆体41的连接端411连接,第一丝线51的第二端朝向杆体41的长度方向延伸并与FPC板53连接。通过这样设置,当第一丝线51通电时,杆体41在第一丝线51的作用下转动,并且转动的方向为杆体41的活动端412沿靠近底座20的方向运动,并且通过使不同的第一丝线的通电量不同,能够保证不同的杆体41的转动角度不同,从而实现改变承载座的倾斜方向和角度,进而实现镜头模组的移轴方式防抖修正。
并且,需要说明是,当第一丝线51未通电时,第一丝线51可以与杆体41平行设置。当然,第一丝线51和杆体41之间也可以呈夹角设置。
优选地,光学元件驱动装置还包括多个夹头80,不同的第一丝线51通过不同的夹头80与FPC板53连接。并且,在本申请的一个具体实施例中,夹头80与FPC板53之间是通过焊接的方式实现连接的。
具体地,FPC板53为多个,且不同的FPC板53分别与不同的杆体41对应。
在本申请的一个具体实施例中,FPC板53包括第一连接段531、第二连接段532和第三连接段533,第二连接段532和第三连接段533分别与第一连接段531连接,且第二连接段532远离第一连接段531的一端与夹头80连接,第三连接段533远离第一连接段531的一端具有卡爪534,卡爪534与杆体41的连接端411连接,第一丝线51通过卡爪534与杆体41连接。
优选地,第三连接段533远离第一连接段531的一端是通过弯折形成的可变形端。通过这样设置,当杆体41相对底座转动时,通过可变形端的形变,能够保证杆体41的转动更加顺畅。
优选地,底座20的侧壁具有用于避让第一连接段531的避让槽21,第一连接段531的至少一部分设置在避让槽21内。通过这样设置能够保证光学元件驱动装置的整体结构更加紧凑。
具体地,底座20对应杆体41的连接端411和活动端412分别设置有安装柱22,杆体41的连接端411与安装柱22活动连接,夹头80设置在杆体41的活动端412对应的安装柱22上,且同一安装柱22的两个相邻的侧面分别对应不同的杆体41的连接端411和活动端412。在本申请的一个具体实施例中,底座20朝向承载座30一侧的底面为四边形,并且四边形的每个角部处分别设置有一个安装柱22,每两个不同的安装柱22分别对应一个杆体41的连接端411和活动端412,并且安装柱22与其所在的底座20的面相互垂直。
在图1至图5所示的实施例中,光学元件驱动装置还包括压片100,压片100设置在承载座30远离底座20的一侧并与安装柱22连接,以为承载座30提供朝向底座20运动的复位力。需要说明的是,在本申请中,当第一丝线51处于未通电的状态时,可以通过压片100为承载座30提供预紧力,从而第一丝线51由通电状态切换至断电状态后为承载座30提供复位力。
具体地,光学元件驱动装置还包括安装座200,安装座200设置在底座20和承载座30之间,且安装座200具有用于放置滚珠90的容置槽300,滚珠90通过安装座200设置在底座20上,且滚珠90的至少一部分位于容置槽300,滚珠90的至少另一部分凸出与容置槽300。
优选地,容置槽300位于安装座200的中心。
当然,在本申请中容置槽300也可以直接设置在底座上。也就是说,在本申请中也可以不设置安装座。
可选地,外壳10由塑料材料制成。
从以上的描述中,可以看出,本发明上述的实施例实现了如下技术效果:
1、有效地解决了现有技术中摄像装置的驱动装置使用性能差的问题;
2、结构简单,性能稳定。
显然,上述所描述的实施例仅仅是本发明一部分的实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都应当属于本发明保护的范围。
需要注意的是,这里所使用的术语仅是为了描述具体实施方式,而非意图限制根据本申请的示例性实施方式。如在这里所使用的,除非上下文另外明确指出,否则单数形式也意图包括复数形式,此外,还应当理解的是,当在本说明书中使用术语“包含”和/或“包括”时,其指明存在特征、步骤、工作、器件、组件和/或它们的组合。
需要说明的是,本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象,而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换,以便这里描述的本申请的实施方式能够以除了在这里图示或描述的那些以外的顺序实施。
以上所述仅为本发明的优选实施例而已,并不用于限制本发明,对于本领域的技术人员来说,本发明可以有各种更改和变化。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。

Claims (17)

  1. 一种光学元件驱动装置,其特征在于,包括:
    外壳(10);
    底座(20),所述外壳(10)罩设在所述底座(20)上并与所述底座(20)之间形成容置空间;
    承载座(30),所述承载座(30)活动设置在所述容置空间的内部,且所述底座(20)朝向所述承载座(30)的一侧设置有滚珠(90),所述承载座(30)与所述滚珠(90)活动接触;
    拨杆组件(40),所述拨杆组件(40)的至少一部分可转动地设置在所述底座(20)上,且所述拨杆组件(40)与所述承载座(30)驱动连接;
    驱动组件(50),所述驱动组件(50)与所述拨杆组件(40)驱动连接;
    当所述驱动组件(50)通电后,所述驱动组件(50)的至少一部分相对所述底座(20)运动,并带动所述拨杆组件(40)相对所述底座(20)转动,以驱动所述承载座(30)相对所述滚珠(90)滑动并相对Z轴偏斜。
  2. 根据权利要求1所述的光学元件驱动装置,其特征在于,所述拨杆组件(40)包括至少两组杆体(41),每组所述杆体(41)包括两个关于所述承载座(30)中心对称设置的所述杆体(41),所述杆体(41)与所述承载座(30)驱动连接,且所述杆体(41)的两端分别为连接端(411)和活动端(412),所述杆体(41)的连接端(411)与所述底座(20)活动连接,以使所述杆体(41)能够相对所述底座(20)转动。
  3. 根据权利要求2所述的光学元件驱动装置,其特征在于,
    每组的两个所述杆体(41)对应设置在所述底座(20)的一组相互平行的侧边上;和/或
    不同组的相邻的两个所述杆体(41)中,其中一个所述杆体(41)的活动端(412)相对所述连接端(411)靠近另一个所述杆体(41)的所述连接端(411)设置。
  4. 根据权利要求2所述的光学元件驱动装置,其特征在于,所述杆体(41)的长度方向上和所述承载座(30)对应所述杆体(41)的侧壁中的一者具有驱动凸起(60),另一者具有驱动槽(70),所述驱动槽(70)的延伸方向与所述杆体(41)的长度方向相同,所述驱动凸起(60)伸入所述驱动槽(70),当所述杆体(41)相对所述底座(20)转动时,所述驱动凸起(60)沿所述驱动槽(70)运动。
  5. 根据权利要求4所述的光学元件驱动装置,其特征在于,所述杆体(41)具有所述驱动槽(70),所述承载座(30)具有所述驱动凸起(60),且所述承载座(30)对应所述杆体(41)的侧壁上具有沿所述杆体(41)的长度方向延伸的安装槽或者多个沿所述杆体(41)的长度方向间隔设置的安装孔(31),
    所述驱动凸起(60)的一端固定设置在所述安装槽内或者可拆卸地设置在多个所述安装孔(31)中的任意一个所述安装孔(31)上。
  6. 根据权利要求2所述的光学元件驱动装置,其特征在于,所述拨杆组件(40)还包括多个旋转轴(42),所述旋转轴(42)与所述杆体(41)一一对应,且所述杆体(41)的连接端(411)通过所述旋转轴(42)与所述底座(20)活动连接。
  7. 根据权利要求2至6中任一项所述的光学元件驱动装置,其特征在于,所述驱动组件(50)包括:
    第一丝线(51),所述第一丝线(51)为多个;
    FPC板(53),所述FPC板(53)的至少一部分设置在所述容置空间内,所述第一丝线(51)的第一端与所述杆体(41)的连接端(411)连接,所述第一丝线(51)的第二端朝向所述杆体(41)的长度方向延伸并与所述FPC板(53)连接。
  8. 根据权利要求7所述的光学元件驱动装置,其特征在于,所述光学元件驱动装置还包括多个夹头(80),不同的所述第一丝线(51)通过不同的所述夹头(80)与所述FPC板(53)连接。
  9. 根据权利要求8所述的光学元件驱动装置,其特征在于,所述FPC板(53)为多个,且不同的所述FPC板(53)分别与不同的所述杆体(41)对应。
  10. 根据权利要求9所述的光学元件驱动装置,其特征在于,所述FPC板(53)包括第一连接段(531)、第二连接段(532)和第三连接段(533),所述第二连接段(532)和所述第三连接段(533)分别与所述第一连接段(531)连接,且所述第二连接段(532)远离所述第一连接段(531)的一端与所述夹头(80)连接,所述第三连接段(533)远离所述第一连接段(531)的一端具有卡爪(534),所述卡爪(534)与所述杆体(41)的连接端(411)连接,所述第一丝线(51)通过所述卡爪(534)与所述杆体(41)连接。
  11. 根据权利要求10所述的光学元件驱动装置,其特征在于,所述第三连接段(533)远离所述第一连接段(531)的一端是通过弯折形成的可变形端。
  12. 根据权利要求8所述的光学元件驱动装置,其特征在于,所述底座(20)对应所述杆体(41)的连接端(411)和活动端(412)分别设置有安装柱(22),所述杆体(41)的连接端(411)与所述安装柱(22)活动连接,所述夹头(80)设置在所述杆体(41)的活动端(412)对应的所述安装柱(22)上,且同一所述安装柱(22)的两个相邻的侧面分别对应不同的所述杆体(41)的所述连接端(411)和所述活动端(412)。
  13. 根据权利要求12所述的光学元件驱动装置,其特征在于,所述光学元件驱动装置还包括压片(100),所述压片(100)设置在所述承载座(30)远离所述底座(20)的一侧并与所述安装柱(22)连接,以为所述承载座(30)提供朝向所述底座(20)运动的复位力。
  14. 根据权利要求12所述的光学元件驱动装置,其特征在于,所述光学元件驱动装置还包括安装座(200),所述安装座(200)设置在所述底座(20)和所述承载座(30)之间,且所述安装座(200)具有用于放置所述滚珠(90)的容置槽(300),所述滚珠(90)通过所述安装座(200)设置在所述底座(20)上,且所述滚珠(90)的至少一部分位于所述容置槽(300),所述滚珠(90)的至少另一部分凸出与所述容置槽(300)。
  15. 根据权利要求14所述的光学元件驱动装置,其特征在于,所述容置槽(300)位于所述安装座(200)的中心。
  16. 一种摄像装置,其特征在于,所述摄像装置包括权利要求1至15中任一项所述的光学元件驱动装置。
  17. 一种移动终端,其特征在于,所述移动终端包括权利要求16所述的摄像装置。
PCT/CN2022/116403 2022-05-16 2022-09-01 光学元件驱动装置、摄像装置及移动终端 WO2023221334A1 (zh)

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