WO2019051650A1 - 一种摄像头模组及终端 - Google Patents

一种摄像头模组及终端 Download PDF

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Publication number
WO2019051650A1
WO2019051650A1 PCT/CN2017/101446 CN2017101446W WO2019051650A1 WO 2019051650 A1 WO2019051650 A1 WO 2019051650A1 CN 2017101446 W CN2017101446 W CN 2017101446W WO 2019051650 A1 WO2019051650 A1 WO 2019051650A1
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WO
WIPO (PCT)
Prior art keywords
lens
voice coil
coil motor
thread
groove
Prior art date
Application number
PCT/CN2017/101446
Other languages
English (en)
French (fr)
Inventor
刘方成
李邓峰
何瑛勇
韩阳
蒋磊
王建文
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 RU2020113062A priority Critical patent/RU2020113062A/ru
Priority to US16/642,309 priority patent/US11089189B2/en
Priority to CN201780065084.9A priority patent/CN109844601A/zh
Priority to CN202211552056.9A priority patent/CN116233572A/zh
Priority to KR1020207007508A priority patent/KR102468417B1/ko
Priority to ES17925176T priority patent/ES2947707T3/es
Priority to JP2020509070A priority patent/JP7111318B2/ja
Priority to AU2017431850A priority patent/AU2017431850B2/en
Priority to EP17925176.4A priority patent/EP3660567B1/en
Priority to PCT/CN2017/101446 priority patent/WO2019051650A1/zh
Publication of WO2019051650A1 publication Critical patent/WO2019051650A1/zh

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    • 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
    • G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
    • G02B7/102—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens controlled by a microcomputer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
    • 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
    • G02B7/025—Mountings, adjusting means, or light-tight connections, for optical elements for lenses using glue
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H04M1/0264—Details of the structure or mounting of specific components for a camera module assembly
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/51—Housings
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2250/00—Details of telephonic subscriber devices
    • H04M2250/52—Details of telephonic subscriber devices including functional features of a camera

Definitions

  • Embodiments of the present invention relate to a camera module and a terminal.
  • the screw-in-interlock structure shown in Fig. 1 can be used. This structure mainly depends on the between the voice coil motor and the lens. The threads cooperate with each other to form a preliminary bonding force, and then are fixed by dispensing from the upper end of the interfitting structure of the screw, so that the outer surface of the lens and the inner surface of the voice coil motor are fixed even if the lens and the voice coil motor are combined.
  • the shortcomings of the structure are also increasingly emerging, that is, the lens and the voice coil motor have poor bonding force due to insufficient bonding force.
  • the embodiment of the invention provides a camera module and a terminal, which can solve the problem that the module is poorly focused due to insufficient bonding force between the lens and the voice coil motor.
  • an embodiment of the present invention provides a camera module including a lens and a voice coil motor.
  • the lens is disposed in a voice coil motor, and the first part of the voice coil motor is attached to the first part of the lens outside.
  • the second portion of the inside of the ring motor is provided with a screw structure recessed with respect to the first portion of the inside of the voice coil motor, and the screw portion and the second portion of the outside of the lens form a groove portion, and the groove portion is filled with a colloid.
  • the first part of the inner side of the voice coil motor is the lower part of the inner side of the voice coil motor
  • the second part of the inner side of the voice coil motor is the upper part of the inner side of the voice coil motor
  • the first part of the outer side of the lens is the lower part of the outer side of the lens.
  • the second part of the outer side of the lens is the upper part of the outer side of the lens.
  • the screw on the inner surface of the voice coil motor acts as a glue overflow groove, that is, the bonding force between the lens and the voice coil motor mainly comes from the glue itself.
  • the colloid in the dispensing process, can penetrate into the overflow tank, which can effectively enhance the bonding force between the colloid and the voice coil motor, thereby solving the problem that the module is poorly focused due to insufficient bonding force between the lens and the voice coil motor. The problem.
  • the first portion of the inner side of the voice coil motor is the same as the second portion of the inner side of the voice coil motor at the inner side of the voice coil motor. That is to say, on the inner side of the voice coil motor, the first portion of the inner side of the voice coil motor and the second portion of the inner side of the voice coil motor are each half.
  • This makes it possible to make the assembly of the lens and the voice coil motor as firm as possible while ensuring a convenient combination between the voice coil motor and the lens.
  • such an aliquot design also saves colloid while ensuring assembly and imaging effects, which is a trade-off between assembly robustness and assembly cost.
  • the outer side of the lens is a screwless smooth structure.
  • At least one groove surrounding the outside of the lens is provided on the outer side of the lens, and the gel fills the groove.
  • the colloid can not only penetrate into the overflow tank provided on the voice coil motor, but also penetrate into the overflow tank provided on the lens, so that the colloid can form a bonding force with the voice coil motor and the lens, thereby increasing the bonding force.
  • the screw structure uses a single thread or a double thread, wherein the thread type and groove type of the single or double thread include a triangle, a rectangle, a trapezoid, a zigzag, and a tube thread. At least one of them.
  • the depth of the threads is greater than or equal to 0.2 mm and less than or equal to 0.5 mm. Among them, the deeper the thread, the better the fixing effect. On the contrary, the shallower the thread, the relatively poor fixing effect.
  • the number of thread turns of the thread structure is greater than or equal to one turn and less than or equal to five turns.
  • the number of thread circles is positively related to the amount of colloid consumed, and also positively related to the fixation effect, that is, the more the number of thread circles, the more gels are consumed, but the fixation effect is better.
  • the colloid is a thermoset adhesive.
  • the embodiment of the present invention provides a terminal, which comprises the camera module mentioned in the above first aspect or the possible design of any of the first aspects.
  • FIG. 3 is a cross-sectional view of a camera module according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of assembling a lens into a voice coil motor according to an embodiment of the present invention.
  • FIG. 5 is a cross-sectional view of another camera module according to an embodiment of the present invention.
  • FIG. 6 is a cross-sectional view of another camera module according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of an assembly jig according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of assembling a voice coil motor into an assembly fixture according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a matching structure after dispensing according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of another matching structure after dispensing according to an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
  • FIG. 3 is a cross-sectional view of a camera module according to an embodiment of the present invention.
  • the camera module includes a lens 1 and a voice coil motor 2. After the lens 1 is placed in the voice coil motor 2, the first portion 3 of the inner side surface of the voice coil motor 2 is fitted to the first portion 4 of the outer side surface of the lens 1.
  • the second portion 5 on the inner side of the voice coil motor 2 is provided with a threaded structure 6 recessed with respect to the first portion 3 of the inner side of the voice coil motor 2, the threaded structure 6 forming a groove with the second portion 7 of the outer side of the lens 1 8.
  • the side of the groove portion 8 adjacent to the voice coil motor 2 is a thread structure 6, and the side of the groove portion 8 near the lens 1 may be a screwless surface structure.
  • the glue can be dispensed from above the groove portion 8 so that the colloid is along the side wall of the groove portion 8 (ie, the screw structure 6 and the second portion 7 of the outer side surface of the lens 1) ) flows to the bottom portion 9 of the groove portion 8, thereby achieving colloid filling of the groove portion 8.
  • the first portion 3 of the inner side surface of the voice coil motor 2 is the lower portion of the inner side surface of the voice coil motor 2
  • the second portion 5 of the inner side surface of the voice coil motor 2 is the upper portion of the inner side surface of the voice coil motor 2
  • the first portion of the outer side surface of the lens 1 4 is a lower portion of the outer side surface of the lens 1
  • the second portion 7 of the outer side surface of the lens 1 is an upper portion of the outer side surface of the lens 1.
  • the position of the glue filling is the groove portion 8 formed by the screw structure 6 recessed by the voice coil motor 2 and the screwless surface structure of the lens 1, since there is no thread mutual The embedded structure, therefore, can effectively reduce the assembly difficulty in assembling the lens 1 and the voice coil motor 2.
  • the contact portion is only the first portion 4 of the outer side surface of the lens 1 and the first portion 3 of the inner side surface of the voice coil motor 2, thereby effectively utilizing the screwless surface The advantage of easy assembly in the structure.
  • the mating structure does not have the friction between the inner and outer threads caused by the interfitting structure of the screw, the debris generated by the twisting and pressing between the screw and the thread does not occur. Therefore, the risk of forming particles is low.
  • particle refers to debris or dust appearing in the imaging area, causing "black shadows, black spots" in the corresponding position of the image during imaging.
  • the contact surface is the first portion 4 of the outer side surface of the lens 1 and the first portion 3 of the inner side surface of the voice coil motor 2, and the fitting gap is small, which is advantageous for improving the positioning accuracy.
  • the thread structure 6 can be configured as a shallow screw structure, that is, a thread structure having a shallow thread depth, for example, the thread depth is set to 0.2 to 0.5 mm (mm),
  • the size of the mating structure in the X and Y directions can be effectively saved, thereby reducing the volume of the mating structure to improve the optical axis accuracy.
  • FIG. 4 a schematic diagram of assembling a lens into a voice coil motor according to an embodiment of the present invention is shown.
  • a colloid having a threaded structure 6 is formed along the outer surface of the second portion 7 of the outer side of the lens 1, that is, the lens 1 and the voice coil motor 2
  • the combination of glue is formed along the outer surface of the second portion 7 of the outer side of the lens 1, that is, the lens 1 and the voice coil motor 2
  • the colloid is matched with the groove portion 8, that is, the colloid is close to the voice coil motor.
  • the side of 2 is a screw structure that cures in colloid After that, the colloid is interlaced with the screw structure 5 of the voice coil motor 2, and the side of the colloid close to the lens 1 has a screw-free smooth surface structure and is attached to the lens 1.
  • the depth of the groove portion 8 with respect to the horizontal plane depends on the width of each thread.
  • the lens 1 and the voice coil motor 2 of the screw-embedded structure have screw threads, and it is precisely because of such a screw structure that the lens 1 and the voice coil motor 2 are closely matched, and the assembly difficulty and accuracy are increased. Lower, that is, the difference between the actual mounting position where the lens is mounted on the voice coil motor 2 and the theoretical design position is large.
  • the threaded interfitting structure provides most of the bonding force, and the bonding force provided by the colloid is only an auxiliary effect.
  • the lens 1 and the voice coil motor 2 having no screw surface structure have no thread, which means that the lens 1 and the voice coil motor 2 are matched by the dispensing of two smooth surfaces.
  • the gel provides a primary bond between the lens 1 and the voice coil motor 2.
  • the lens 1 is not provided with a screw, and only the screw on the inner surface of the voice coil motor 2 serves as a glue groove, which means that the bonding force between the lens 1 and the voice coil motor 2 is Mainly from the colloid itself. Moreover, in the dispensing process, the colloid can penetrate into the overflow tank to enhance the bonding force between the colloid and the voice coil motor 2.
  • a cross-sectional view of another camera module according to an embodiment of the present invention that is, a groove 10 is added to the second portion 7 outside the lens 1 based on the mating structure shown in FIG. .
  • the position where the groove 10 is disposed is not limited to the position as shown in FIG.
  • the groove 10 may be disposed at a position opposite to the screw structure 6, that is, the screw structure 6, the groove 10, and the first portion 4 outside the lens 1 together constitute the groove portion 8, or, as shown in the figure
  • the recess 10 can also be disposed at a position that does not have a relative positional relationship with the thread structure 6, i.e., the recess 10 is disposed at a position opposite to the first portion 3 inside the voice coil motor 2.
  • the recess 10 functions to increase the adhesive force between the solidified colloid and the exterior of the lens 1.
  • the first portion 4 of the groove 10 outside the lens 1 as shown in FIG. 6 is closely attached to the first portion 3 inside the voice coil motor 2, in the case where After the injection of the colloid, it is difficult to fill the groove 10 with the colloid, which means that the position of the groove 10 as shown in FIG. 6 can only improve the bonding between the colloid and the exterior of the lens 1 after curing. force. Therefore, as compared with the position where the groove 10 is provided as shown in FIG. 6, it is apparent that the position of the groove 10 as shown in FIG. 5 further increases the degree of firmness of assembly between the lens 1 and the voice coil motor 2.
  • the threads and grooves belong to two distinct configurations.
  • the thread refers to a spiral-shaped continuous protrusion or a concave portion having a specific section formed on the surface of the cylinder. If the thread only surrounds the cylindrical surface for one week, the starting position and the ending position of the thread may be staggered. The distance means that the track formed by only one thread around the cylindrical surface cannot be completely butted; and the groove refers to a continuous concave portion with a specific interface formed on the surface of the cylinder. If the groove only surrounds the cylindrical surface one week, the initial position and the end position of the groove will be completely abutted, that is, a circumferential groove is formed on the surface of the cylinder.
  • the upper surface 11 and the lower surface 12 of the groove 10 may be disposed as a plane parallel to the horizontal plane or a plane at an angle to the horizontal plane. Only one possible structure is shown in FIGS. 5 and 6. There is no limit here.
  • the colloid not only fills the thread structure 6, but also fills the groove 10.
  • the colloid itself can not only closely fit with the voice coil motor 2, but also because of the presence of the groove 10, the colloid and the lens 1 are closely adhered to each other, that is, the solidified colloid is respectively combined with the lens 1 and the voice coil motor 2
  • a threaded interfitting structure is formed therebetween to reinforce the colloid and lens 1, and the colloid and voice coil motor 2.
  • the camera module shown in FIG. 5 is more rigid because the second portion 7 outside the lens 1 is provided with the recess 10.
  • the number of the grooves 10 provided on the first portion 4 outside the lens 1 is not limited.
  • the recess 10 may be a recessed groove around the outer surface of the lens 1 or a plurality of discrete points around the outer surface of the lens 1 arranged in a certain step, that is, each of the independent grooves 10 may be Think of a depressed area, etc.
  • the groove 10 is on the second portion 7 outside the lens 1 shown in FIG. 5, or on the first portion 4 outside the lens 1 shown in FIG. 6, and may be disposed above and below the groove 10.
  • the adjacent at least one groove similar to or identical to the structure of the groove 10 is not limited herein.
  • the screw structure 6 may adopt a single screw or a double screw, if the lens 1 is externally provided with a plurality of grooves 10, and the plurality of grooves 10 are adjacent
  • the structure is similar to the structure of the threaded structure 6, and the structure can also be a single thread or a double thread, which is not limited herein.
  • the thread type of the screw structure 6 may be identical, completely different or partially identical, and the thread type of the screw structure 6 and the type of the groove 10 may be any of a triangle, a rectangle, a trapezoid, a zigzag, and a pipe thread.
  • One type can of course be other types, which is not limited herein.
  • the number of thread loops can be set according to the current demand for the fixing effect between the lens 1 and the voice coil motor 2, and can usually be set to 1 to 5 turns.
  • the number of thread circles is positively related to the amount of colloid consumed, and also positively related to the fixation effect, that is, the more the number of thread loops, the more gels are consumed, but the fixation effect will be better.
  • the fewer the number of thread loops the more the gel is saved, but the fixing effect is also relatively poor.
  • the thread depth of the thread structure 6 also affects the fixing effect. The deeper the thread, the better the fixing effect. On the contrary, the shallower the thread, the relatively poor fixing effect.
  • a circle of UV thermosetting glue or other thermosetting glue is placed at the junction of the lens 1 and the voice coil motor 2, and the colloid is solidified by heating and baking.
  • a snap structure is formed between the solidified colloid and the thread structure 6, so that the colloid can be closely adhered to the voice coil motor 2;
  • FIG. 5 and FIG. 6 as an example, A buckle structure is formed between the solidified colloid and the screw structure 6, and a buckle structure is formed between the solidified colloid and the groove 10, so that the colloid can be closely attached to the lens 1 and the voice coil motor 2 respectively. Hehe. That is to say, the colloid can make the bonding force in the vertical direction become higher.
  • the colloid on the side of the voice coil motor 2 is provided with a hiding area, which can greatly enhance the bonding force brought by the colloid, so that no assembly process is possible.
  • the torque matching is not only simple to assemble, but also there is no process particle formation due to the absence of the screwing and pressing between the screw and the screw in the assembly process; for Figure 5 and Figure 6, it is in Figure 3.
  • the colloid near the side of the lens 1 flows into the area of the glue disposed outside the lens 1 to further enhance the bonding force of the colloid.
  • the assembly jig 13 of the lens 1 and the voice coil motor 2 may have the structure as shown in FIG.
  • the type of the assembly jig 13 is not limited, and the groove 14 on the upper surface of the assembly jig 13 can be buckled with the support frame 15 at the lower portion of the voice coil motor 2, that is, the voice coil motor 2 can be fixed at In the assembly jig 13, as shown in FIG. 8, the cleaned voice coil motor 2 can be assembled into the assembly jig 13.
  • the cleaned lens 1 is assembled to the voice coil In the motor 2, the assembly jig 13 is used to limit the displacement of the voice coil motor 2 during assembly, that is, the limit, and the groove formed by the lens 1 and the voice coil motor 2 at the gap between the lens 1 and the voice coil motor 2 Part 8 dispenses and cures.
  • the process of dispensing and curing is realized on the basis of the mating structure shown in FIG. 5 .
  • FIG. 6 is similar to FIG. 5 and will not be described here. Among them, the shaded portion indicates the portion filled with the colloid.
  • the lens 1 in order to prevent the colloid from overflowing from the groove portion 8 and affecting the matching between the lens 1 and the voice coil motor 2, in the embodiment of the present invention, the lens 1 may be externally A groove is provided below the portion 4, and/or a groove is provided below the first portion 3 inside the voice coil motor 2 as a glue overflow groove.
  • the first portion 3 of the inner side surface of the voice coil motor 2 and the second portion 5 of the inner side surface of the voice coil motor 2 The proportion of the inner side of the voice coil motor 2 can be freely distributed. Therefore, in the embodiment of the present invention, the designer can consider the actual needs of the current camera module. Wherein, the higher the proportion of the second portion 5 of the inner side surface of the voice coil motor 2 is, the lower the ratio of the first portion 3 representing the inner side surface of the voice coil motor 2 is, and the contact area of the screw structure 6 with respect to the colloid is set.
  • the lower the ratio of the second portion 5 representing the inner side surface of the voice coil motor 2 the smaller the contact area of the screw structure 6 with respect to the colloid is, but the lens 1 and the voice coil motor 2 are closely fitted.
  • the contact area is larger, which ensures that the bonding area between the lens 1 and the voice coil motor 2 is increased as much as possible while assembling, and since the contact area of the screw structure 6 with respect to the colloid is relatively small, During the dispensing process, the space occupied by the groove portion 8 is small, and the colloid is saved.
  • the first portion 3 of the inner side of the voice coil motor 2 and the second portion 5 of the inner side of the voice coil motor 2 have the same proportion of the inner side of the voice coil motor 2, that is, inside the voice coil motor 2
  • the first portion 3 of the inner side surface of the voice coil motor 2 and the second portion 5 of the inner side surface of the voice coil motor 2 are each half.
  • the assembly of the lens 1 and the voice coil motor 2 can be made stronger as much as possible while ensuring a convenient combination between the voice coil motor 2 and the lens 1.
  • such an aliquot design also saves colloid while ensuring assembly and imaging effects, which is a trade-off between assembly robustness and assembly cost.
  • the embodiment of the present invention provides a terminal, which includes at least one camera module as shown in FIG. 3 to FIG. 6 , and the assembly manner of the camera module disposed in the terminal can refer to the above embodiment, and does not Narration.
  • the terminal may be provided with at least one camera module.
  • the camera module may be part of a front camera of the terminal and/or a part of a rear camera of the terminal. This is not limited.

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Abstract

本申请实施例提供一种摄像头模组及终端，能够解决因镜头与音圈马达之间因胶结合力不足而导致模组对焦不良的问题。该摄像头模组包括：镜头和音圈马达，镜头置于音圈马达内，音圈马达内部侧面的第一部分与镜头外部侧面的第一部分贴合；音圈马达内部侧面的第二部分设置有相对于音圈马达内部侧面的第一部分凹陷的螺牙结构，螺牙结构与镜头外部侧面的第二部分形成槽部，槽部填充有胶体。其中，音圈马达内部侧面的第一部分为音圈马达内部侧面的下部，音圈马达内部侧面的第二部分为音圈马达内部侧面的上部，镜头外部侧面的第一部分为镜头外部侧面的下部，镜头外部侧面的第二部分为镜头外部侧面的上部。本申请实施例适用于音圈马达与镜头之间的固定。

Description

一种摄像头模组及终端 技术领域
本发明实施例涉及一种摄像头模组及终端。
背景技术
为了使音圈马达(Voice Coil Motor，VCM)与镜头(Lens)更好地配合，可以采用如图1所示的螺牙互嵌式结构，这种结构主要依靠音圈马达和镜头之间的螺牙相互配合，形成初步结合力，之后从螺牙互嵌式结构的上端通过点胶固定，从而使镜头的外表面和音圈马达的内表面固定，即使镜头和音圈马达结合在一起。
但随着照相机/摄像机大光圈、光学防抖(Optical Image Stabilization，OIS)等新技术的兴起，上述螺牙互嵌式结构比较难以保证照相机/摄像机的对光轴精度，同时很难满足减少成像时画面出现“黑影、黑点”的需求，因此，发展出了无螺牙光面结构。如图2所示的无螺牙光面结构，该结构与预组装、自动校准(Auto Alignment，AA)设备相配合，有效解决了光轴精度问题，并且额外带来了照相机/摄像机X、Y方向上尺寸减小的收益(螺牙互嵌式结构因螺牙占用X、Y方向上的空间较多，会导致模组外形过大)，此外，“黑影、黑点”问题也得到了一定程度的改善。
然而，随着无螺牙光面结构的推广，该结构的不足也日益浮现，即镜头与音圈马达之间因胶结合力不足而导致模组对焦不良。
发明内容
本发明实施例提供一种摄像头模组及终端，能够解决因镜头与音圈马达之间因胶结合力不足而导致模组对焦不良的问题。
第一方面，本发明实施例提供一种摄像头模组，该摄像头模组包括镜头和音圈马达，镜头置于音圈马达内，音圈马达内部的第一部分与镜头外部的第一部分贴合，音圈马达内部的第二部分设置有相对于音圈马达内部的第一部分凹陷的螺牙结构，螺牙结构与镜头外部的第二部分构成槽部，槽部填充有胶体。其中，音圈马达内部侧面的第一部分为音圈马达内部侧面的下部，音圈马达内部侧面的第二部分为音圈马达内部侧面的上部，镜头外部侧面的第一部分为镜头外部侧面的下部，镜头外部侧面的第二部分为镜头外部侧面的上部。在本发明实施例中，音圈马达内面上的螺牙作为溢胶槽，即镜头与音圈马达之间的结合力主要来源于胶体本身。并且，在点胶过程中，胶体可以渗入溢胶槽，可以有效增强胶体与音圈马达之间的结合力，从而解决因镜头与音圈马达之间因胶结合力不足而导致模组对焦不良的问题。
在一种可能的设计中，音圈马达内部侧面的第一部分与音圈马达内部侧面的第二部分在音圈马达内部侧面的占比相同。也就意味着，在音圈马达的内部侧面，上述音圈马达内部侧面的第一部分与音圈马达内部侧面的第二部分各占一半。这样就可以在保证音圈马达与镜头之间方便组合的前提下，尽可能使镜头与音圈马达的组装更加牢固。同时，这样等分的设计方案也在保证组装及成像效果的同时，节省胶体，即权衡了组装牢固性与组装成本这两方面的需求。
在一种可能的设计中，镜头外部侧面为无螺牙光面结构。
在一种可能的设计中，在镜头外部侧面上设置有至少一条环绕镜头外部的凹槽，该胶体填满凹槽。。这样在点胶过程中，胶体不仅可以渗入音圈马达上设置的溢胶槽，还可以渗入镜头上设置的溢胶槽，从而使胶体分别与音圈马达、镜头之间形成结合力，进而增加音圈马达与镜头之间的胶结合力。
在一种可能的设计中，螺牙结构采用单螺牙或双螺牙，其中，单螺牙或双螺牙的螺纹类型和凹槽的类型包括三角形、矩形、梯形、锯齿形、管螺纹中的至少一项。
在一种可能的设计中，螺纹的深度大于或等于0.2毫米且小于或等于0.5毫米。其中，螺纹越深，则固定效果越好，相反，螺纹越浅，则固定效果相对较差
在一种可能的设计中，螺牙结构的螺牙圈数大于或等于1圈且小于或等于5圈。其中，螺牙圈数的多少与耗费的胶体的多少呈正相关，也与固定效果呈正相关，即螺牙圈数越多所耗费的胶体越多，但固定效果也会更好，相反，螺牙圈数越少越节省胶体，但固定效果也会相对较差。
在一种可能的设计中，胶体为热固胶。
第二方面，本发明实施例提供一种终端，该终端包括上述第一方面或第一方面任意一项可能的设计中所提到的摄像头模组。
附图说明
图1为背景技术提供的一种螺牙互嵌式结构；
图2为背景技术提供的一种无螺牙光面结构；
图3为本发明实施例提供的一种摄像头模组的剖面图；
图4为本发明实施例提供的一种将镜头组装到音圈马达中的示意图；
图5为本发明实施例提供的另一种摄像头模组的剖面图；
图6为本发明实施例提供的另一种摄像头模组的剖面图；
图7为本发明实施例提供的一种组装治具的结构示意图；
图8为本发明实施例提供的一种将音圈马达装配到组装治具中的结构示意图；
图9为本发明实施例提供的一种配合结构点胶后的结构示意图；
图10为本发明实施例提供的另一种配合结构点胶后的结构示意图；
图11为本发明实施例提供的一种终端的结构示意图。
附图标记说明：
1-镜头，
2-音圈马达，
3-音圈马达2内部的第一部分，
4-镜头1外部的第一部分，
5-音圈马达2内部的第二部分，
6-螺牙结构，
7-镜头1外部的第二部分，
8-槽部，
9-槽部8的底部，
10-镜头1外部的凹槽，
11-凹槽10的上表面，
12-凹槽10的下表面，
13-组装治具，
14-组装治具13的凹槽，
15-支撑架。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行描述。
如图3所示，为本发明实施例提供的一种摄像头模组的剖面图。该摄像头模组包括镜头1和音圈马达2。在将镜头1置于音圈马达2中后，音圈马达2内部侧面的第一部分3与镜头1外部侧面的第一部分4贴合。在音圈马达2内部侧面的第二部分5设置有相对于音圈马达2内部侧面的第一部分3凹陷的螺牙结构6，螺牙结构6与镜头1外部侧面的第二部分7形成槽部8。其中，槽部8靠近音圈马达2的侧面为螺牙结构6，槽部8靠近镜头1的侧面可以为无螺牙光面结构。在本发明实施例中，可以通过点胶的方式，从槽部8的上方进行点胶，使胶体沿着槽部8的侧壁(即螺牙结构6和镜头1外部侧面的第二部分7)流到槽部8的底部9，从而实现槽部8的胶体填充。
其中，音圈马达2内部侧面的第一部分3为音圈马达2内部侧面的下部，音圈马达2内部侧面的第二部分5为音圈马达2内部侧面的上部，镜头1外部侧面的第一部分4为镜头1外部侧面的下部，镜头1外部侧面的第二部分7为镜头1外部侧面的上部。
本发明实施例提供的摄像头模组，填胶的位置是由音圈马达2凹陷设置的螺牙结构6与镜头1的无螺牙光面结构所构成的槽部8，由于不存在螺牙互嵌式结构，因此，在组装镜头1和音圈马达2的过程中，能够有效降低组装难度。且镜头1与音圈马达2在组装过程中，会发生接触的位置仅为镜头1外部侧面的第一部分4与音圈马达2内部侧面的第一部分3，因此，有效利用了无螺牙光面结构所带来的方便组装的优势。另外，由于该配合结构不存在螺牙互嵌式结构所带来的内外螺牙之间的摩擦，也就不会出现因螺牙与螺牙之间相互扭合、挤压所产生的碎屑，因此，形成particle的风险较低。其中，particle指碎屑或者灰尘出现在成像区域内，造成成像时画面对应位置出现“黑影、黑点”。在镜头1与音圈马达2紧密贴合的情况下，接触面为镜头1外部侧面的第一部分4与音圈马达2内部侧面的第一部分3，贴合间隙小，有利于提高定位精度。并且，由于螺牙结构6的设置，可以确保点胶过程中，胶体充分填满螺牙结构6的每一个齿内，即齿内可以藏胶，从而增加镜头1与音圈马达2之间的粘接力。
需要说明的是，在本发明实施例中，螺牙结构6可以设置为浅螺牙结构，即螺纹深度较浅的螺牙结构，比如，螺纹深度被设置为0.2至0.5毫米(mm)，这样能够有效节省该配合结构对X、Y方向的尺寸，从而减小该配合结构的体积，以提高光轴精度。如图4所示，为本发明实施例提供的一种将镜头组装到音圈马达中的示意图。在将镜头1和音圈马达2组装好并完成点胶后，会沿着镜头1外部侧面的第二部分7的外表面形成一层具有螺牙结构6的胶体，即镜头1与音圈马达2的结合胶。也就意味着，在镜头1与音圈马达2之间所形成的环绕在镜头1外部的呈环形的槽部8中注满胶体后，该胶体与槽部8吻合，即胶体靠近音圈马达2的那一面呈螺牙结构，在胶体固化 后，该胶体与音圈马达2的螺牙结构5互嵌，而胶体靠近镜头1的那一面呈无螺牙光面结构，与镜头1贴合。
由于结合胶所呈现的形态依赖于镜头1与音圈马达2组装后所形成的槽部8的结构，而在每个螺牙的宽度一定的情况下，槽部8相对于水平面的深度又依赖于螺牙结构6的螺牙数量，因此，可以认为螺牙结构6所具有的螺牙数量越多，在点胶后所形成的胶体会因填充面积过大而使镜头1与音圈马达2之间固定的效果更好。
现有技术中螺牙互嵌式结构的镜头1和音圈马达2均有螺牙，也正是因为这样的螺牙结构使镜头1与音圈马达2之间匹配紧密，同时增加组装难度，精度较低，即在将镜头安装在音圈马达2上的实际安装位置与理论设计位置的差距较大。该螺牙互嵌式结构提供了大部分的结合力，而胶体所提供的结合力仅为辅助作用。现有技术中无螺牙光面结构的镜头1和音圈马达2均无螺牙，也就意味着，镜头1与音圈马达2之间是通过两个光面的点胶而配合的，由胶体为镜头1和音圈马达2之间提供主要的结合力。而在本发明实施例中，镜头1上未设置有螺牙，仅由音圈马达2内面上的螺牙作为溢胶槽，也就意味着，镜头1与音圈马达2之间的结合力主要来源于胶体本身。并且，在点胶过程中，胶体可以渗入溢胶槽，增强胶体与音圈马达2之间的结合力。
如图5所示，为本发明实施例提供的另一种摄像头模组的剖面图，即在图3所示的配合结构的基础上，在镜头1外部的第二部分7上增加凹槽10。需要说明的是，凹槽10的设置位置不仅限于如图5所示的位置。在本发明实施例中，凹槽10可以设置在与螺牙结构6相对的位置上，即螺牙结构6、凹槽10以及镜头1外部的第一部分4共同构成槽部8，或者，如图6所示，凹槽10还可以设置在与螺牙结构6不存在相对位置关系的位置上，即凹槽10设置在与音圈马达2内部的第一部分3相对的位置上。
其中，无论凹槽10位于如图5所示的位置，还是位于如图6所示的位置，凹槽10的作用均在于增加固化的胶体与镜头1外部之间的胶结合力。相比较于如图5所示的凹槽10的位置，如图6所示的凹槽10在镜头1外部的第一部分4与音圈马达2内部的第一部分3贴合非常紧密的情况，在注入胶体后，很难使凹槽10被胶体填满，也就意味着如图6所示的凹槽10的设置位置只能在一定程度上提升固化后胶体与镜头1外部之间的胶结合力。因此，相比较于如图6所示的设置凹槽10的位置，明显如图5所示的设置凹槽10的位置会更进一步增加镜头1与音圈马达2之间组装的牢固程度。
另外，在本发明实施例中，螺纹与凹槽属于两种截然不同的结构。其中，螺纹指的是在圆柱表面上制出的螺旋线形的具有特定截面的连续凸起或是凹陷部分，若该螺纹仅环绕圆柱表面一周，则该螺纹的起始位置和终止位置会错开一定距离，也就意味着，仅环绕圆柱表面一周的螺纹所形成的轨道是无法完全对接的；而凹槽则是指在圆柱表面上制出的一圈一圈的具有特定界面的连续凹陷部分，若该凹槽仅环绕圆柱表面一周，则该凹槽的起始位置和终止位置会完全对接，即在圆柱表面形成环绕一周的沟壑。
需要说明的是，凹槽10的上表面11和下表面12可以设置为与水平面平行的平面，或是与水平面呈一定角度的平面，图5、图6中仅示出一种可能的结构，在此不做限定。
以图5所示的结构为例，在从槽部8的上方进行点胶，使胶体沿着槽部8的侧壁 流到槽部8的底部9，从而实现槽部8的胶体填充的过程中，胶体不仅会填满螺牙结构6，还会填满凹槽10。这样胶体本身不仅能够与音圈马达2之间紧密贴合，同时也因为凹槽10的存在，使胶体与镜头1之间紧密贴合，即固化后的胶体分别与镜头1、音圈马达2之间形成螺牙互嵌式结构，从而加固胶体与镜头1，以及胶体与音圈马达2。相比较于图3所示的摄像头模组而言，图5所示的摄像头模组因镜头1外部的第二部分7设置有凹槽10而更坚固。
需要说明的是，在本发明实施例中，对于镜头1外部的第一部分4上所设置的凹槽10的数量不做限定。凹槽10可以为环绕镜头1外表面一周的一个凹陷的槽部，也可以为按照一定步长设置的环绕镜头1外表面一周的多个分散的点，即每一个独立的凹槽10可以被视为一个凹陷的区域等。当然，凹槽10为图5所示的在镜头1外部的第二部分7上，或是为图6所示的在镜头1外部的第一部分4上，还可以设置着与该凹槽10上下相邻的至少一个与凹槽10结构类似或是相同的凹槽，在此不做限定。
在本发明实施例提供的另一种可能的实现方式中，螺牙结构6可以采用单螺牙或双螺牙，若镜头1外部设置有多个凹槽10，且多个凹槽10相邻构成类似于螺牙结构6的结构，那么该结构也可以采用单螺牙或双螺牙，在此不做限定。螺牙结构6的每个螺纹的类型可以完全相同、完全不同或是部分相同，螺牙结构6的螺纹类型以及凹槽10的类型可以为三角形、矩形、梯形、锯齿形、管螺纹中的任意一种，当然也可以为其他的类型，在此不做限定。对于螺牙结构6而言，螺牙圈数可以根据当前对于镜头1与音圈马达2之间固定效果的需求来设置，通常可以设置为1至5圈。一般情况下，螺牙圈数的多少与耗费的胶体的多少呈正相关，也与固定效果呈正相关，即螺牙圈数越多所耗费的胶体越多，但固定效果也会更好，相反，螺牙圈数越少越节省胶体，但固定效果也会相对较差。螺牙结构6的螺纹深度也会影响固定效果，螺纹越深，则固定效果越好，相反，螺纹越浅，则固定效果相对较差。
在将镜头1和音圈马达2组装到位后，在镜头1与音圈马达2的结合处点一圈UV热固胶或是其他热固胶，通过加热烘烤后使胶体固化。以图3为例，使固化后的胶体与螺牙结构6之间形成卡扣结构，这样胶体就能够和音圈马达2之间紧密贴合；同样的，以图5、图6为例，使固化后的胶体与螺牙结构6之间形成卡扣结构，且使固化后的胶体与凹槽10之间形成卡扣结构，这样胶体就能够分别与镜头1、音圈马达2之间紧密贴合。也就意味着，胶体可以使垂直方向的结合力变高，对于图3而言，音圈马达2侧的胶体设置有藏胶区域，可以大大提升胶体带来的结合力，使组装过程中无扭力匹配，不仅组装简单，而且在组装过程中因不存在螺牙与螺牙之间相互扭合、挤压，也就无过程particle生成；对于图5、图6而言，则是在图3的基础上，使靠近镜头1侧的胶体流入设置在镜头1外部的藏胶区域中，可以进一步提升胶体带来的结合力。
在组装镜头1与音圈马达2的过程中，需要先将镜头1和音圈马达2的组装治具13置于组装设备上，其中，组装治具13可以为如图7所示的结构。在本发明实施例中，对于组装治具13的类型不做限定，组装治具13上表面的凹槽14能够与音圈马达2下部的支撑架15卡扣，即音圈马达2可以固定在组装治具13中，如图8所示，可以将清洗后的音圈马达2装配到组装治具13中。随后，将清洗后的镜头1装配到音圈 马达2内，使用组装治具13限制音圈马达2在组装过程中的位移，即限位，并在镜头1与音圈马达2的间隙处，即镜头1与音圈马达2所构成的槽部8中点胶并固化。如图8所示，为在图3所示的配合结构基础上实现点胶、固化的过程，如图9所示，为在图5所示的配合结构基础上实现点胶、固化的过程，需要说明的是，图6与图5类似，在此不赘述。其中，阴影部分表示被胶体填充的部分。
需要说明的是，在上述各实施例中，为了防止胶体从槽部8中溢出而影响镜头1与音圈马达2之间的匹配，在本发明实施例中，还可以在镜头1外部的第一部分4的下方设置凹槽，和/或在音圈马达2内部的第一部分3的下方设置凹槽，以作为溢胶槽。
此外，在实际组装镜头1与音圈马达2的过程中，考虑到在设计音圈马达2的过程中，音圈马达2内部侧面的第一部分3与音圈马达2内部侧面的第二部分5在音圈马达2内部侧面的占比是可以自由分配的，因此，在本发明实施例中，设计人员可以结合当前摄像头模组的实际需求进行考虑。其中，音圈马达2内部侧面的第二部分5的占比越高，则表示音圈马达2内部侧面的第一部分3的占比越低，设置的螺牙结构6相对于胶体的接触面积则越大，这样音圈马达2与固化后胶体之间的结合力越大，即音圈马达2与镜头1的固定效果越好；音圈马达2内部侧面的第一部分3的占比越高，则表示音圈马达2内部侧面的第二部分5的占比越低，虽然设置的螺牙结构6相对于胶体的接触面积会相对较小，但镜头1与音圈马达2之间紧密贴合的接触面积则越大，这样可以保证在组装方便的同时尽可能增加镜头1与音圈马达2之间的贴合面积，且因为螺牙结构6相对于胶体的接触面积相对较小，则在点胶过程中，因槽部8所占空间较小，而节省胶体。
在一种优选方案中，音圈马达2内部侧面的第一部分3与音圈马达2内部侧面的第二部分5在音圈马达2内部侧面的占比相同时，即在音圈马达2的内部侧面，上述音圈马达2内部侧面的第一部分3与音圈马达2内部侧面的第二部分5各占一半。这样就可以在保证音圈马达2与镜头1之间方便组合的前提下，尽可能使镜头1与音圈马达2的组装更加牢固。同时，这样等分的设计方案也在保证组装及成像效果的同时，节省胶体，即权衡了组装牢固性与组装成本这两方面的需求。
本发明实施例提供一种终端，该终端包括至少一个如图3至图6所示的任意摄像头模组，设置于该终端的摄像头模组的组装方式等可参照上述实施例，在此不做赘述。需要说明的是，如图11所示，终端可以设置有至少一个该摄像头模组，比如，该摄像头模组可以为终端的前置摄像头的一部分和/或该终端的后置摄像头的一部分，在此不做限定。
以上所述，仅为本发明的具体实施方式，但本发明实施例的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明实施例揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明实施例的保护范围之内。因此，本发明实施例的保护范围应以所述权利要求的保护范围为准。

Claims (14)

  1. 一种摄像头模组，其特征在于，所述摄像头模组包括镜头Lens和音圈马达VCM，所述镜头置于所述音圈马达内，
    所述音圈马达内部侧面的第一部分与所述镜头外部侧面的第一部分贴合；
    所述音圈马达内部侧面的第二部分设置有相对于所述音圈马达内部侧面的第一部分凹陷的螺牙结构，所述螺牙结构与所述镜头外部侧面的第二部分形成槽部，所述槽部填充有胶体；
    其中，所述音圈马达内部侧面的第一部分为所述音圈马达内部侧面的下部，所述音圈马达内部侧面的第二部分为所述音圈马达内部侧面的上部，所述镜头外部侧面的第一部分为所述镜头外部侧面的下部，所述镜头外部侧面的第二部分为所述镜头外部侧面的上部。
  2. 根据权利要求1所述的摄像头模组，其特征在于，所述音圈马达内部侧面的第一部分与所述音圈马达内部侧面的第二部分在所述音圈马达内部侧面的占比相同。
  3. 根据权利要求1或2所述的摄像头模组，其特征在于，所述镜头外部侧面为无螺牙光面结构。
  4. 根据权利要求1或2所述的摄像头模组，其特征在于，在所述镜头外部侧面上设置有至少一条环绕所述镜头外部的凹槽，所述胶体填满所述凹槽。
  5. 根据权利要求4所述的摄像头模组，其特征在于，所述螺牙结构采用单螺牙或双螺牙，其中，所述单螺牙或所述双螺牙的螺纹类型和所述凹槽的类型包括三角形、矩形、梯形、锯齿形、管螺纹中的至少一项。
  6. 根据权利要求5所述的摄像头模组，其特征在于，螺纹的深度大于或等于0.2毫米且小于或等于0.5毫米。
  7. 根据权利要求1至6中任意一项所述的摄像头模组，其特征在于，所述螺牙结构的螺牙圈数大于或等于1圈且小于或等于5圈。
  8. 一种终端，其特征在于，所述终端包括摄像头模组，所述摄像头模组包括镜头Lens和音圈马达VCM，所述镜头置于所述音圈马达内，
    所述音圈马达内部侧面的第一部分与所述镜头外部侧面的第一部分贴合；
    所述音圈马达内部侧面的第二部分设置有相对于所述音圈马达内部侧面的第一部分凹陷的螺牙结构，所述螺牙结构与所述镜头外部侧面的第二部分形成槽部，所述槽部填充有胶体；
    其中，所述音圈马达内部侧面的第一部分为所述音圈马达内部侧面的下部，所述音圈马达内部侧面的第二部分为所述音圈马达内部侧面的上部，所述镜头外部侧面的第一部分为所述镜头外部侧面的下部，所述镜头外部侧面的第二部分为所述镜头外部侧面的上部。
  9. 根据权利要求8所述的终端，其特征在于，所述音圈马达内部侧面的第一部分与所述音圈马达内部侧面的第二部分在所述音圈马达内部侧面的占比相同。
  10. 根据权利要求8或9所述的终端，其特征在于，所述镜头外部侧面为无螺牙光面结构。
  11. 根据权利要求8或9所述的终端，其特征在于，在所述镜头外部侧面上设置 有至少一条环绕所述镜头外部的凹槽，所述胶体填满所述凹槽。
  12. 根据权利要求11所述的终端，其特征在于，所述螺牙结构采用单螺牙或双螺牙，其中，所述单螺牙或所述双螺牙的螺纹类型和所述凹槽的类型包括三角形、矩形、梯形、锯齿形、管螺纹中的至少一项。
  13. 根据权利要求12所述的终端，其特征在于，螺纹的深度大于或等于0.2毫米且小于或等于0.5毫米。
  14. 根据权利要求8至13中任意一项所述的终端，其特征在于，所述螺牙结构的螺牙圈数大于或等于1圈且小于或等于5圈。
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