WO2021047595A1 - 镜头模组 - Google Patents

镜头模组 Download PDF

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Publication number
WO2021047595A1
WO2021047595A1 PCT/CN2020/114520 CN2020114520W WO2021047595A1 WO 2021047595 A1 WO2021047595 A1 WO 2021047595A1 CN 2020114520 W CN2020114520 W CN 2020114520W WO 2021047595 A1 WO2021047595 A1 WO 2021047595A1
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WO
WIPO (PCT)
Prior art keywords
lens
circuit board
wire
memory alloy
shape memory
Prior art date
Application number
PCT/CN2020/114520
Other languages
English (en)
French (fr)
Inventor
李刚
张晋
李林珍
卢继亮
Original Assignee
常州市瑞泰光电有限公司
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Filing date
Publication date
Application filed by 常州市瑞泰光电有限公司 filed Critical 常州市瑞泰光电有限公司
Publication of WO2021047595A1 publication Critical patent/WO2021047595A1/zh

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Classifications

    • 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
    • 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
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/64—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image
    • G02B27/646—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image compensating for small deviations, e.g. due to vibration or shake
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
    • F03G7/06—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like
    • 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
    • G02B7/08—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted to co-operate with a remote control mechanism
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
    • H04N23/682—Vibration or motion blur correction
    • H04N23/685—Vibration or motion blur correction performed by mechanical compensation
    • H04N23/687—Vibration or motion blur correction performed by mechanical compensation by shifting the lens or sensor position

Definitions

  • the invention relates to the field of lens optical anti-shake, in particular to a lens module.
  • SMA shape memory alloy
  • One end of the shape memory alloy brake device in the prior art is connected between the movable device and the supporting device through various crimping elements.
  • both ends of the same SMA brake wire are fixed on two different parts (movable platform, support block), which will increase the difficulty of product assembly, especially when applied to the camera optical system , It is also not conducive to line layout and overall miniaturization.
  • the purpose of the present invention is to provide a lens module, which can further realize miniaturization on the basis of reducing the difficulty of product assembly.
  • the lens module includes a frame, a first circuit board mounted to the frame, a lens mount for mounting a lens, a support device for supporting the lens mount on the first circuit board, and a support device connected to the first circuit board And a driving device between the lens holder;
  • the frame is ring-shaped and arranged around the outer periphery of the lens holder, the driving device is used to drive the lens holder to move relative to the frame in a direction perpendicular to the optical axis of the lens ;
  • the frame includes a first side wall arranged oppositely and a second side wall connected between the first side walls and arranged oppositely, the first side wall and the second side wall enclose a ring shape;
  • the driving device includes a shape memory alloy wire having two ends connected to the frame and a driving end located between the two ends. One of the ends is fixed to the first side wall, and the other is The end is fixed to the adjacent second side wall; the driving end is supported on the lens mount.
  • first side wall and the second side wall are provided with wire binding clips, the wire binding clips are sandwiched between the frame and the first circuit board, and the shape memory alloy wire The ends of are respectively fixed by the wire binding clips and are electrically connected to the first circuit board through the wire binding clips.
  • the memory alloy wire includes at least two, and they are symmetrically arranged on the outer periphery of the lens holder, the lens holder is provided with a wire hook portion corresponding to the drive end, and the drive end is matched with the wire hook portion. Pick up.
  • the frame and the lens mount are both square, and the hook line portion is formed at a corner of the lens mount close to the first circuit board.
  • the supporting device includes at least two suspension wires extending along the optical axis direction; a support portion is formed on a side of the lens mount away from the first circuit board, and one end of each suspension wire is connected to the The first circuit board is fixed, the other end is fixed to the supporting part, the suspension wires are symmetrically arranged on the outer periphery of the lens mount and the lens mount is suspended in the frame.
  • the lens mount is square, and the suspension wires are correspondingly arranged at four corners of the lens mount.
  • the four suspension wires are all perpendicular to the first circuit board.
  • the lens holder includes a lens holder for mounting a lens and a base for supporting the lens holder, and the lens holder is movably connected to the base in the direction of the optical axis; the support part And the hook line portions are respectively formed at opposite ends of the base; the lens module further includes an automatic focusing mechanism, and the automatic focusing mechanism includes a second circuit board, a wire, and a focusing shape memory alloy wire
  • the second circuit board is arranged on the base and perpendicular to the first circuit board, and the base is provided with two conductive support portions on a side close to the second circuit board,
  • the first circuit board and the second circuit board are electrically connected by the two conductive support portions and the suspension wires close to the two conductive support portions; the first circuit board and the A signal control wire is also electrically connected between the second circuit board, the wire is arranged on the side of the first circuit board away from the base, and the focus shape memory alloy wire is connected to the second circuit board. Electric connection.
  • a recess is provided on the side of the frame facing the first circuit board at a position corresponding to the wire binding clip, and the wire binding clip is fixed in the corresponding recess.
  • the wire hook portion is provided with a wire groove, and the driving end of the shape memory alloy wire is accommodated in the wire groove.
  • each of the shape memory alloy wires is L-shaped.
  • the included angle formed by each of the shape memory alloy wires is greater than 90 degrees and less than 110 degrees.
  • a baffle is formed on the side of the base away from the first circuit board to extend toward the lens holder, and the side of the lens holder away from the first circuit board is provided with a receiving groove along the optical axis direction, so An elastic member is accommodated in the receiving groove, one end of the elastic member is received and fixed in the receiving groove, and the other end extends to the outside of the lens holder and abuts against the baffle.
  • the focusing shape memory alloy wire has a "V" shape
  • the focusing shape memory alloy wire includes two fixed ends connected to the support portion and a V-shaped drive end located between the two fixed ends.
  • the lens holder is provided with a driving protrusion, the driving protrusion includes a V-shaped end, and the V-shaped driving end of the focusing shape memory alloy wire is in mating contact with the V-shaped end of the lens holder.
  • a ball assembly is provided between the lens holder and the base to guide the lens holder to slide relative to the base along the optical axis of the lens.
  • the present invention has the beneficial effect that for imaging systems of the same size, the hook line parts are located on the four corners of the lens mount, compared to the hook line parts located in the middle of the four sides of the lens mount. In other words, it can make the size of the lens mount smaller, which is more conducive to miniaturization.
  • the two ends of the shape memory alloy wire are connected to the same circuit board, which can make the production and assembly more convenient, and it is also more conducive to the wiring design of the circuit.
  • Figure 1 is an exploded view of the lens module of the present invention
  • Figure 2 is a perspective view of the lens module of the present invention with the housing removed after assembly;
  • Figure 3 is a schematic diagram of Figure 2 with the frame removed;
  • Fig. 4 is a schematic diagram of Fig. 2 from another perspective
  • Figure 5 is a schematic diagram of Figure 4 with the frame and substrate removed;
  • Fig. 6 is a schematic diagram of Fig. 5 from another perspective
  • FIG. 7 is a schematic diagram of another perspective after the substrate and the base are removed in FIG. 3;
  • FIG. 8 is a schematic diagram of FIG. 7 from another perspective
  • Figure 9 is a cross-sectional view of Figure 3 after removing the substrate and the suspension wire;
  • Figure 10 is a top view of Figure 9;
  • FIG. 11 is a schematic diagram of another view from which the first conductive metal sheet is removed in FIG. 7; FIG.
  • Figure 12 is an exploded view of Figure 10 with the base removed.
  • the lens module includes a frame 2, a first circuit board 3 mounted to the frame 2, a lens mount 6 for mounting a lens, a support device for supporting the lens mount 6 on the first circuit board 3, and A driving device connected between the first circuit board 3 and the lens mount 6;
  • the frame 2 is ring-shaped and is provided on the outer periphery of the lens mount.
  • the driving device is used to drive the lens mount 6 relative to the frame 2 to move in a direction perpendicular to the optical axis of the lens.
  • the frame 2 includes opposite first side walls 22a and opposite second side walls 22b connected between the first side walls 22a.
  • the first side walls 22a and the second side walls 22b form a ring shape; referring to FIG.
  • the driving device includes a shape memory alloy wire 41.
  • the shape memory alloy wire 41 has two ends 411 connected to the frame 2 and a driving end 412 located between the two ends; one end 411 is fixed to the first side wall 22a, and the other end 411 It is fixed to the adjacent second side wall 22b; the driving end is supported on the lens mount 6.
  • the first side wall 22a and the second side wall 22b are provided with a wire binding clip 23, which is sandwiched between the frame 2 and the first circuit board 3, and the ends of the shape memory alloy wire 41 are respectively bound by The wire clamp 23 is fixed and electrically connected to the first circuit board 3 via the wire binding clamp 23.
  • the shape memory alloy wires 41 include at least two and are symmetrically arranged on the outer periphery of the lens holder 6.
  • the lens holder 6 is provided with a wire hook portion 63 corresponding to the driving end, and the driving end and the wire hook portion 63 are matched and sleeved.
  • the frame 2 and the lens mount 6 are both square, and the hook line portion 63 is formed at the corner of the lens mount 6 on the side close to the first circuit board 3.
  • FIG. 1 also shows a substrate 8 located below the first circuit board 3 and a housing 9 for covering the frame 2 and the lens mount 6.
  • the shape memory alloy wire 41 is substantially L-shaped, and it also includes two extension sections 413 connected between the driving end 412 and the two ends 411.
  • the two extension sections 413 form an angle. More than 90 degrees and less than 110 degrees, preferably, the included angle is between 90 and 100 degrees.
  • the supporting device includes at least two suspension wires 51 extending along the optical axis direction; a support portion 76 is formed on the side of the lens mount 6 away from the first circuit board 3, and each suspension wire 51 One end is fixed to the first circuit board 3, and the other end is fixed to the supporting part 76.
  • the suspension wire 51 is symmetrically arranged on the outer periphery of the lens mount 6 and the lens mount 6 is suspended in the frame 2.
  • the lens mount 6 has a square shape, and the suspension wires 51 are correspondingly arranged at the four corners of the lens mount 6.
  • the four suspension wires 51 are all perpendicular to the first circuit board 3.
  • the suspension wire 51 has a certain degree of rigidity and elasticity to play a supporting role and provide a restoring force to the lens mount 6.
  • the material of the suspension wire 51 may preferably be a copper alloy.
  • the hook line portion 63 is located in the lens holder On the four bottom corners of the lens mount 6, compared to the hook line 63 in other places of the lens mount 6, especially in the middle of the four sides of the lens mount 6, it can make the size of the lens mount 6 smaller
  • the size of the lens mount 6 in FIG. 10 is conducive to miniaturization.
  • both ends of the shape memory alloy wire 41 are connected to the first circuit board 3, which is more conducive to circuit routing, and only one layer of circuit board is needed to realize the power supply and control of the anti-shake system. .
  • the lens holder 6 includes a lens holder 61 for mounting the lens and a base 62 for supporting the lens holder 61; the lens holder 61 is opposite to the base in the optical axis direction.
  • the seat 62 is movably connected; the supporting portion 76 and the hooking portion 63 are respectively formed at opposite ends of the base 62.
  • the lens module also includes an automatic focusing mechanism, which includes a second circuit board 71, a wire 72, and a focusing shape memory alloy wire 73;
  • the second circuit board 71 is set on the base 62 And perpendicular to the first circuit board 3, the two support portions 76 on the side of the base 62 close to the second circuit board 71 are conductive, and two conductive support portions pass between the first circuit board 3 and the second circuit board 71 76 and the suspension wires 51 close to the two conductive support portions 76 are electrically connected;
  • the signal control wire 72 is also electrically connected between the first circuit board 3 and the second circuit board 71, and the wire 72 is arranged on the first circuit board 3 away from the base.
  • the focusing shape memory alloy wire 73 is electrically connected to the second circuit board 71.
  • the focusing shape memory alloy wire 73 is electrically connected to the second circuit board 71 through a conductive metal sheet.
  • the conductive metal sheet includes a first conductive metal sheet 74 located on one side of the lens holder 61, and a second conductive metal sheet 74 disposed opposite to the first conductive metal sheet 74 and located on the other side of the lens holder 61.
  • the metal sheet 75, the first conductive metal sheet 74 and the second conductive metal sheet 75 are electrically connected between the focusing shape memory alloy wire 73 and the second circuit board 71, respectively.
  • the second end of the first conductive metal sheet 74 is connected to the second circuit board 71.
  • the end of the two conductive metal sheets 75 away from the second circuit board 71 extends to the side of the lens holder 61 away from the first circuit board 3, and the focusing shape memory alloy wire 73 includes the first conductive metal sheet 74 and the second conductive metal sheet 74, respectively.
  • the two ends connected to the metal sheet 75 and the driving end connected to the lens holder 61 are arranged on the side of the lens barrel holder 61 close to the first circuit board 3.
  • the side of the frame 2 facing the first circuit board 3 is provided with a recess 21 at a position corresponding to the wire binding clip 23, and the wire binding clip 23 is fixed in the corresponding recess 21.
  • each side wall 22 of the frame 2 is provided with two recesses 21 at intervals, and a binding clip 23 is installed in each recess 21.
  • the frame 2 and the lens mount 6 are both square, the frame 2 further includes four corners connected between adjacent side walls 22, and the four corners of the lens mount 6 face the four corners of the frame 2 respectively. That is, the diagonal of the square frame 2 is collinear with the diagonal of the square lens mount 6.
  • the wire hook portion 63 is provided with a wire groove 631, and the driving end of the shape memory alloy wire 41 is accommodated in the wire groove 631.
  • the wire groove 631 is opened on the outer side of the wire hook portion 63 (that is, the side away from the center of the lens mount 6, that is, the side facing the frame 2 ).
  • a baffle 621 is formed on the side of the base 62 away from the first circuit board 3 toward the lens holder 61, and the side of the lens holder 61 away from the first circuit board 3 is along the optical axis.
  • a receiving groove 613 is opened in the direction, and an elastic member 611 is accommodated in the receiving groove 613.
  • One end of the elastic member 611 is received and fixed in the receiving groove 613, and the other end extends to the outside of the lens holder 61 and abuts against the baffle 621.
  • the elastic member 611 For the spring.
  • the focusing shape memory alloy wire 73 is in the shape of a "V".
  • the focusing shape memory alloy wire 73 includes two fixed ends connected to the supporting portion 76 and a V-shaped end located between the two fixed ends.
  • the focusing shape memory alloy wire 73 The V-shaped drive end of the lens holder 61 is in mating contact with the V-shaped end of the lens holder 61.
  • a ball assembly 612 is provided between the lens holder 61 and the base 62 to guide the lens holder 61 to slide relative to the base 62 along the optical axis of the lens.
  • the movement of the lens mount 6 in a plane perpendicular to the optical axis of the lens in the present invention is as follows:
  • the four shape memory alloy wires 41 are represented by shape memory alloy wires 41a, shape memory alloy wires 41b, shape memory alloy wires 41c, and shape memory alloy wires 41d;
  • the shape memory alloy wire 41b When the lens holder 6 needs to move in the ⁇ direction, referring to FIG. 10, only the shape memory alloy wire 41b needs to be energized and contracted, and the shape memory alloy wire 41b will generate a force in the ⁇ direction, thereby driving the lens holder 6 to move in the ⁇ direction .
  • the shape memory alloy wire 41a when the lens holder 6 needs to move in the ⁇ direction, the shape memory alloy wire 41a only needs to be energized and contracted, and the shape memory alloy wire 41a will generate a force in the ⁇ direction to drive the lens holder 6 to move in the ⁇ direction.
  • the principle of the movement of the lens holder 6 toward the ⁇ and ⁇ directions is the same as above, and will not be repeated here.
  • the ⁇ / ⁇ / ⁇ / ⁇ directions are respectively the direction from which the centers of the driving ends of the four shape memory alloy wires 41 face the center of the lens holder 6
  • the ⁇ / ⁇ / ⁇ / ⁇ direction is consistent with the diagonal direction of the square.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
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  • General Engineering & Computer Science (AREA)
  • Lens Barrels (AREA)

Abstract

镜头模组，包括框架（2）、安装至框架（2）的第一电路板（3）、用于安装镜头的镜头座（6）、支撑镜头座（6）于第一电路板（3）的支撑装置以及连接于第一电路板（3）和镜头座（6）之间的驱动装置；框架（2）呈环形且绕设在镜头座（6）外周，驱动装置用于驱动镜头座（6）相对于框架（2）沿垂直于光轴方向运动；框架（2）包括相对设置的第一侧壁（22a）以及连接在第一侧壁（22a）之间且相对设置的第二侧壁（22b），第一侧壁（22a）与第二侧壁（22b）围成环形；驱动装置包括形状记忆合金线（41），形状记忆合金线（41）具有连接至框架（2）的两末端（411）以及位于两末端（411）之间的驱动端，一个末端（411）与第一侧壁（22a）固定，另一末端（411）固定至相邻第二侧壁（22b）；驱动端（412）支撑于镜头座（6）。镜头模组在降低产品装配难度的基础上实现微型化。

Description

镜头模组 技术领域
本发明涉及镜头光学防抖领域，尤其涉及一种镜头模组。
 背景技术
目前，在光学防抖的领域中，基于形状记忆合金（SMA）线的致动装置越来越多的被采用。
 技术问题
现有技术中的形状记忆合金制动装置一端通过各个压接元件连接到可移动装置与支撑装置之间。上述的设置方式中，同一条SMA制动器导线的两端是分别固定在两个不同的零件（可移动平台、支撑块）上的，这样会增加产品装配的难度，尤其在应用在摄像光学系统时，也不利于线路排布和整体小型化。
 技术解决方案
为了克服现有技术的不足，本发明的目的在于提供一种镜头模组，其能在降低产品装配难度的基础上，进一步地实现微型化。
本发明的目的采用如下技术方案实现：
镜头模组，包括框架、安装至所述框架的第一电路板、用于安装镜头的镜头座、支撑所述镜头座于所述第一电路板的支撑装置以及连接于所述第一电路板和镜头座之间的驱动装置；所述框架呈环形且绕设在所述镜头座外周，所述驱动装置用于驱动所述镜头座相对所述框架沿垂直于所述镜头的光轴方向运动；
所述框架包括相对设置的第一侧壁以及连接在所述第一侧壁之间且相对设置的第二侧壁，所述第一侧壁与所述第二侧壁围成环形；所述驱动装置包括形状记忆合金线，所述形状记忆合金线具有连接至所述框架的两末端以及位于两末端之间的驱动端，其中一个所述末端与所述第一侧壁固定，另一所述末端固定至相邻所述第二侧壁；所述驱动端支撑于所述镜头座。
进一步地，所述第一侧壁及所述第二侧壁上设置有绑线夹，所述绑线夹夹设于所述框架与所述第一电路板之间，所述形状记忆合金线的末端分别由所述绑线夹固定、并经所述绑线夹电连接至所述第一电路板。
进一步地，所述记忆合金线包括至少两条，且对称设置在所述镜头座外周，所述镜头座对应所述驱动端设置有勾线部，所述驱动端与所述勾线部配合套接。
进一步地，所述框架及所述镜头座均为方形，所述勾线部形成于所述镜头座靠近所述第一电路板一侧的角部。
进一步地，所述支撑装置包括沿所述光轴方向延伸的至少两根悬丝；所述镜头座远离所述第一电路板的一侧形成有支撑部，每一所述悬丝一端与所述第一电路板固定、另一端与所述支撑部固定，所述悬丝对称设置在所述镜头座外周并将所述镜头座悬置于所述框架内。
进一步地，所述镜头座为方形，所述悬丝对应设置于所述镜头座的四个角。
进一步地，四根所述悬丝均与所述第一电路板垂直。
进一步地，所述镜头座包括用于安装镜头的镜头支架和用于支撑所述镜头支架的基座，所述镜头支架在所述光轴方向相对所述基座可移动连接；所述支撑部及所述勾线部分别形成于所述基座的相对两端；所述镜头模组还包括自动调焦机构，所述自动调焦机构包括第二电路板、导线以及调焦形状记忆合金线；所述第二电路板设置在所述基座上且垂直于所述第一电路板，所述基座靠近所述第二电路板的一侧上设置有两个导电的所述支撑部，所述第一电路板与所述第二电路板之间通过两个导电的所述支撑部以及靠近两个导电的所述支撑部的所述悬丝电连接；所述第一电路板和所述第二电路板之间还电连接有信号控制导线，所述导线设置于所述第一电路板背离所述基座的一侧，所述调焦形状记忆合金线与所述第二电路板电连接。
进一步地，所述框架朝向所述第一电路板的一面对应绑线夹的位置上设置有凹陷，所述绑线夹固定于相应的所述凹陷内。
进一步地，所述勾线部开设有线槽，所述形状记忆合金线的驱动端容纳在所述线槽内。
进一步地，每一所述形状记忆合金线呈L型。
进一步地，每一所述形状记忆合金线形成的夹角大于90度小于110度。
进一步地，所述基座远离所述第一电路板的一侧朝所述镜头支架方向延伸形成有挡板，镜头支架远离所述第一电路板的一侧沿光轴方向开设收容槽，所述收容槽内收容有弹性件，所述弹性件一端收容固定于所述收容槽、另一端延伸至所述镜头支架外并与所述挡板抵接。
进一步地，所述调焦形状记忆合金线呈“V”字形，所述调焦形状记忆合金线包括连接至所述支撑部的两固定端和位于两固定端之间的V型驱动端，所述镜头支架上设置有驱动凸部，所述驱动凸部包括V型端部，所述调焦形状记忆合金线的V型驱动端与所述镜头支架的V型端部配合接触。
进一步地，所述镜头支架和所述基座之间设有引导所述镜头支架沿镜头的光轴方向相对所述基座滑动的滚珠组件。
 有益效果
相比现有技术，本发明的有益效果在于：对于同样大小的成像系统来说，勾线部位于镜头座的四个角部上，相比于勾线部位于镜头座的四条边的中部而言，其可以让镜头座的尺寸做得更小，从而更利于微型化。而形状记忆合金线的两末端均连接在同一电路板上，可以使得其在生产装配时更加方便，也更利于电路的走线设计。
 附图说明
图1为本发明镜头模组的爆炸图；
图2为本发明镜头模组组装后去除外壳的立体图；
图3为图2去除框架的示意图；
图4为图2另一视角的示意图；
图5为图4去除框架以及基板的示意图；
图6为图5另一视角的示意图；
图7为图3中去除基板以及基座后另一视角的示意图；
图8为图7另一视角的示意图；
图9为图3中去除基板以及悬丝后的剖视图；
图10为图9的俯视图；
图11为图7中去除第一导电金属片的另一视角的示意图；
图12为图10中去除基座后的爆炸图。
图中：2、框架；21、凹陷；22a、第一侧壁；22b、第二侧壁；23、绑线夹；3、第一电路板；41、形状记忆合金线；411、末端；412、驱动端；413、延伸段；51、悬丝；6、镜头座；61、镜头支架；611、弹性件；612、滚珠组件；613、收容槽；62、基座；621、挡板；63、勾线部；631、线槽；71、第二电路板；72、导线；73、调焦形状记忆合金线；74、第一导电金属片；75、第二导电金属片；76、支撑部；8、基板；9、外壳。
 本发明的实施方式
为了便于理解本发明，下面将参照相关附图对本发明进行更全面的描述。附图中给出了本发明的较佳的实施例。但是，本发明可以用许多不同的形式来实现，并不限于本文所描述的实施例。相反地，提供这些实施例的目的是使对本发明的公开内容的理解更加透彻全面。
需要说明的是，当元件被称为“固定于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。本文所使用的术语“垂直的”、“水平的”、“左”、“右”以及类似的表述只是为了说明的目的。
除非另有定义，本文所使用的所有的技术和科学术语与属于本发明的技术领域的技术人员通常理解的含义相同。本文中在本发明的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本发明。本文所使用的术语“及/或”包括一个或多个相关的所列项目的任意的和所有的组合。
如图1-6所示，该镜头模组包括框架2、安装至框架2的第一电路板3、用于安装镜头的镜头座6、支撑镜头座6于第一电路板3的支撑装置以及连接于第一电路板3和镜头座6之间的驱动装置；框架2呈环形且饶设在镜头座外周，驱动装置用于驱动镜头座6相对框架2沿垂直于镜头的光轴方向运动。框架2包括相对设置的第一侧壁22a以及连接在第一侧壁22a之间且相对设置的第二侧壁22b，第一侧壁22a与第二侧壁22b围成环形；参照图12，驱动装置包括形状记忆合金线41，形状记忆合金线41具有连接至框架2的两末端411以及位于两末端之间的驱动端412；其中一个末端411与第一侧壁22a固定，另一末端411固定至相邻第二侧壁22b；驱动端支撑于镜头座6。具体地，第一侧壁22a及第二侧壁22b上设置有绑线夹23，绑线夹23夹设于框架2与第一电路板3之间，形状记忆合金线41的末端分别由绑线夹23固定、并经绑线夹23电连接至第一电路板3。形状记忆合金线41包括至少两条，且对称设置在镜头座6外周，请参阅图9，镜头座6对应驱动端设置有勾线部63，驱动端与勾线部63配合套接。在本实施例中，框架2及镜头座6均为方形，勾线部63形成于镜头座6靠近第一电路板3一侧的角部。需要说明的是，在图1中还示出了位于第一电路板3下方的基板8以及用于罩盖框架2和镜头座6的外壳9。
请参阅图12，优选地，形状记忆合金线41基本呈L型，其还包括连接于驱动端412与两末端411之间的两延伸段413，两延伸段413之间形成夹角，夹角大于90度小于110度，优选地，夹角位于90~100度之间。
请参阅图3，在本实施例中，支撑装置包括沿光轴方向延伸的至少两根悬丝51；镜头座6远离第一电路板3的一侧形成有支撑部76，每一悬丝51一端与第一电路板3固定、另一端与支撑部76固定，悬丝51对称设置在镜头座6外周并将镜头座6悬置于框架2内。优选地，镜头座6为方形，悬丝51对应设置于镜头座6的四个角。优选地，四根悬丝51均与第一电路板3垂直。悬丝51具有一定刚性与弹性，以起到支撑作用以及给镜头座6提供回复力，悬丝51的材料可以优选为铜合金。
在本发明中，对于同样大小的成像系统来说（同样大小的成像系统意味着在镜头座6内开设的圆形孔直径一样，也即镜头的外径一样），勾线部63位于镜头座6的四个底角部上，相比于勾线部63位于镜头座6的其他地方，特别是位于镜头座6的四条边的中部而言，其可以让镜头座6的尺寸做得更小，对于同样大小的成像系统，图10中的镜头座6的尺寸有利于微型化。此外，在本发明中，形状记忆合金线41的两末端均连接在第一电路板3上，从而可以更利于电路走线，只需要一层电路板即可实现对防抖系统的供电与控制。
作为优选地实施方式，请参阅图2、图7以及图9，镜头座6包括用于安装镜头的镜头支架61和用于支撑镜头支架61的基座62；镜头支架61在光轴方向相对基座62可移动连接；支撑部76及勾线部63分别形成于基座62的相对两端。请参阅图3-6，镜头模组还包括自动调焦机构，自动调焦机构包括第二电路板71、导线72以及调焦形状记忆合金线73；第二电路板71设置在基座62上且垂直于第一电路板3，基座62靠近第二电路板71的一侧上的两个支撑部76导电，第一电路板3与第二电路板71之间通过两个导电的支撑部76以及靠近两个导电的支撑部76的悬丝51电连接；第一电路板3和第二电路板71之间还电连接有信号控制导线72，导线72设置于第一电路板3背离基座62的一侧，调焦形状记忆合金线73与第二电路板71电连接。通过这样的设置方式，无需占用额外的平面空间，从而能减少镜头模组的尺寸，进一步利于微型化。
具体地，调焦形状记忆合金线73是通过导电金属片与第二电路板71电连接的。具体地，请参阅图7-8，导电金属片包括位于镜头支架61一侧的第一导电金属片74，以及与第一导电金属片74相对设置且位于镜头支架61另一侧的第二导电金属片75，第一导电金属片74与第二导电金属片75均分别电连接在调焦形状记忆合金线73与第二电路板71之间，第一导电金属片74的第二端与第二导电金属片75远离第二电路板71的一端延伸至镜头支架61远离所述第一电路板3的一侧，调焦形状记忆合金线73包括分别与第一导电金属片74以及第二导电金属片75相连的两末端，以及与镜头支架61连接的驱动端，所述驱动端设置于所述镜筒支架61靠近所述第一电路板3的一侧。调焦形状记忆合金线73通电时可以带动镜头支架61沿镜头的光轴方向运动，从而实现调焦功能。
优选地，请参阅图1，框架2朝向第一电路板3的一面对应绑线夹23的位置上设置有凹陷21 ，绑线夹23固定于相应的凹陷21内。优选地，框架2的每一侧壁22间隔设置有两个凹陷21，每一凹陷21内安装一绑线夹23。
优选地，框架2以及镜头座6均呈正方形，框架2还包括四个连接于相邻侧壁22之间的角部，镜头座6的四个角部分别朝向框架2的四个角部。即正方形的框架2的对角线与正方形的镜头座6的对角线共线。
优选地，请参阅图9，勾线部63开设有线槽631，形状记忆合金线41的驱动端容纳在线槽631内。线槽631开设于勾线部63的外侧（即远离镜头座6中心的一侧，也即朝向框架2的一侧）。通过这样的设置方式，可以保证本发明镜头模组的可靠性。
优选地，请参阅图3以及图11，基座62远离第一电路板3的一侧朝镜头支架61方向延伸形成有挡板621，镜头支架61远离第一电路板3的一侧沿光轴方向开设有收容槽613，收容槽613内收容有弹性件611，弹性件611一端收容固定于收容槽613、另一端延伸至镜头支架61外并与挡板621抵接，具体地，弹性件611为弹簧。调焦形状记忆合金线73呈“V”字形，调焦形状记忆合金线73包括连接至支撑部76的两固定端和位于两固定端之间的V型端部，调焦形状记忆合金线73的V型驱动端与镜头支架61的V型端部配合接触。具体地，镜头支架61和基座62之间设有引导镜头支架61沿镜头的光轴方向相对基座62滑动的滚珠组件612。
本发明中镜头座6在垂直于镜头光轴的平面内的运动方式如下：
为了便于描述，在图10中将四根形状记忆合金线41分别用：形状记忆合金线41a、形状记忆合金线41b、形状记忆合金线41c以及形状记忆合金线41d表示；
当镜头座6需要朝Y方向运动时，参照图10，只需要将形状记忆合金线41a以及形状记忆合金线41b通电收缩，形状记忆合金线41a与形状记忆合金线41b便会产生一个朝Y方向的合力，从而驱动镜头座6朝Y方向运动。同理，当镜头座6需要朝-Y方向运动时，只需要将形状记忆合金线41c以及形状记忆合金线41d通电收缩，形状记忆合金线41c与形状记忆合金线41d便会产生一个朝-Y方向的合力，从而驱动镜头座6朝-Y方向运动。镜头座6朝向X与-X方向的运动原理与上述相同，此处不再赘述，X/-X/Y/-Y方向分别平行于框架2的四侧壁22。
当镜头座6需要朝α方向运动时，参照图10，只需要将形状记忆合金线41b通电收缩，形状记忆合金线41b便会产生一个朝α方向的力，从而驱动镜头座6朝α方向运动。同理，当镜头座6需要朝β方向运动时，只需要将形状记忆合金线41a通电收缩，形状记忆合金线41a便会产生一个朝β方向的力，从而驱动镜头座6朝β方向运动。镜头座6朝向γ与δ方向的运动原理与上述相同，此处不再赘述，α/β/γ/δ方向分别为四根形状记忆合金线41的驱动端的中心朝向镜头座6的中心的方向，当镜头座6为正方形时，α/β/γ/δ方向与正方形的对角线方向一致。
以上仅为本发明的实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (15)

  1. 镜头模组，其特征在于，包括：框架、安装至所述框架的第一电路板、用于安装镜头的镜头座、支撑所述镜头座于所述第一电路板的支撑装置以及连接于所述第一电路板和镜头座之间的驱动装置；所述框架呈环形且绕设在所述镜头座外周，所述驱动装置用于驱动所述镜头座相对所述框架沿垂直于所述镜头的光轴方向运动；
    所述框架包括相对设置的第一侧壁以及连接在所述第一侧壁之间且相对设置的第二侧壁，所述第一侧壁与所述第二侧壁围成环形；所述驱动装置包括形状记忆合金线，所述形状记忆合金线具有连接至所述框架的两末端以及位于两末端之间的驱动端，其中一个所述末端与所述第一侧壁固定，另一所述末端固定至相邻所述第二侧壁；所述驱动端支撑于所述镜头座。
  2. 如权利要求1所述的镜头模组，其特征在于，所述第一侧壁及所述第二侧壁上设置有绑线夹，所述绑线夹夹设于所述框架与所述第一电路板之间，所述形状记忆合金线的末端分别由所述绑线夹固定、并经所述绑线夹电连接至所述第一电路板。
  3. 如权利要求2所述的镜头模组，其特征在于，所述记忆合金线包括至少两条，且对称设置在所述镜头座外周，所述镜头座对应所述驱动端设置有勾线部，所述驱动端与所述勾线部配合套接。
  4. 如权利要求3所述的镜头模组，其特征在于，所述框架及所述镜头座均为方形，所述勾线部形成于所述镜头座靠近所述第一电路板一侧的角部。
  5. 如权利要求3所述的镜头模组，其特征在于，所述支撑装置包括沿所述光轴方向延伸的至少两根悬丝；所述镜头座远离所述第一电路板的一侧形成有支撑部，每一所述悬丝一端与所述第一电路板固定、另一端与所述支撑部固定，所述悬丝对称设置在所述镜头座外周并将所述镜头座悬置于所述框架内。
  6. 如权利要求5所述的镜头模组，其特征在于，所述镜头座为方形，所述悬丝对应设置于所述镜头座的四个角。
  7. 如权利要求6所述的镜头模组，其特征在于，四根所述悬丝均与所述第一电路板垂直。
  8. 如权利要求5所述的镜头模组，其特征在于，所述镜头座包括用于安装镜头的镜头支架和用于支撑所述镜头支架的基座，所述镜头支架在所述光轴方向相对所述基座可移动连接；所述支撑部及所述勾线部分别形成于所述基座的相对两端；所述镜头模组还包括自动调焦机构，所述自动调焦机构包括第二电路板、导线以及调焦形状记忆合金线；所述第二电路板设置在所述基座上且垂直于所述第一电路板，所述基座靠近所述第二电路板的一侧上设置有两个导电的所述支撑部，所述第一电路板与所述第二电路板之间通过两个导电的所述支撑部以及靠近两个导电的所述支撑部的所述悬丝电连接；所述第一电路板和所述第二电路板之间还电连接有信号控制导线，所述导线设置于所述第一电路板背离所述基座的一侧，所述调焦形状记忆合金线与所述第二电路板电连接。
  9. 如权利要求8所述的镜头模组，其特征在于，所述框架朝向所述第一电路板的一面对应绑线夹的位置上设置有凹陷，所述绑线夹固定于相应的所述凹陷内。
  10. 如权利要求3所述的镜头模组，其特征在于，所述勾线部开设有线槽，所述形状记忆合金线的驱动端容纳在所述线槽内。
  11. 如权利要求1-10任一项所述的镜头模组，其特征在于，每一所述形状记忆合金线呈L型。
  12. 如权利要求11所述的镜头模组，其特征在于，每一所述形状记忆合金线形成的夹角大于90度小于110度。
  13. 如权利要求8所述的镜头模组，其特征在于，所述基座远离所述第一电路板的一侧朝所述镜头支架方向延伸形成有挡板，镜头支架远离所述第一电路板的一侧沿光轴方向开设收容槽，所述收容槽内收容有弹性件，所述弹性件一端收容固定于所述收容槽、另一端延伸至所述镜头支架外并与所述挡板抵接。
  14. 如权利要求13所述的镜头模组，其特征在于，所述调焦形状记忆合金线呈“V”字形，所述调焦形状记忆合金线包括连接至所述支撑部的两固定端和位于两固定端之间的V型驱动端，所述镜头支架上设置有驱动凸部，所述驱动凸部包括V型端部，所述调焦形状记忆合金线的V型驱动端与所述镜头支架的V型端部配合接触。
  15. 如权利要求14所述的镜头模组，其特征在于，所述镜头支架和所述基座之间设有引导所述镜头支架沿镜头的光轴方向相对所述基座滑动的滚珠组件。
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