WO2020103600A1 - 镜头模组 - Google Patents

镜头模组

Info

Publication number
WO2020103600A1
WO2020103600A1 PCT/CN2019/110478 CN2019110478W WO2020103600A1 WO 2020103600 A1 WO2020103600 A1 WO 2020103600A1 CN 2019110478 W CN2019110478 W CN 2019110478W WO 2020103600 A1 WO2020103600 A1 WO 2020103600A1
Authority
WO
WIPO (PCT)
Prior art keywords
lens
groove
peripheral portion
lens module
barrel
Prior art date
Application number
PCT/CN2019/110478
Other languages
English (en)
French (fr)
Inventor
许凌云
Original Assignee
瑞声通讯科技(常州)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 瑞声通讯科技(常州)有限公司 filed Critical 瑞声通讯科技(常州)有限公司
Publication of WO2020103600A1 publication Critical patent/WO2020103600A1/zh

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/003—Alignment of optical elements
    • 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
    • G02B7/022—Mountings, adjusting means, or light-tight connections, for optical elements for lenses lens and mount having complementary engagement means, e.g. screw/thread
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G02B13/003—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having two lenses

Definitions

  • the utility model relates to the field of optical imaging, in particular to a lens module used in the field of photographic camera products.
  • the related art lens module includes a lens barrel and a lens group.
  • the lens barrel has a containing space, the lens group is housed and fixed in the containing space, and the lens barrel surrounds the first barrel wall forming a light-through hole and A second tube wall extending from an edge of the first tube wall along the optical axis direction and extending toward the image side, the lens group includes at least one lens, the lens includes a body portion serving as an imaging area, and surrounding the body portion For the peripheral portion extending outward, the first cylinder wall cover is provided on the peripheral portion.
  • the first barrel wall is directly attached to the peripheral portion, which is very likely to cause assembly deformation, while increasing the size of the lens barrel and the lens barrel.
  • the difficulty in matching and forming the lens group will not be conducive to the optical performance and reliability of the lens module.
  • the purpose of the utility model is to provide a lens module with simple structure, convenient adjustment and good reliability.
  • the present invention provides a lens module, including a lens barrel, a lens group accommodated in the lens barrel, and a positioning block;
  • the lens barrel includes a first barrel wall enclosing a through hole and The edge of the first barrel wall is a second barrel wall that extends and bends toward the image side along the optical axis.
  • the lens group includes at least one first lens.
  • the first lens includes a main body portion serving as an imaging area and a surrounding lens.
  • a side of the first cylinder wall close to the first lens is recessed in a direction away from the peripheral portion to form a first groove
  • the object side is recessed toward the image side to form a second groove.
  • the orthographic projection of the first groove on the second groove coincides with the second groove, and the first groove and the second groove together form a receiving space; the positioning block is locked In the receiving space, the first cylinder wall is spaced from the peripheral portion.
  • the positioning block is a ball, and both the first groove and the second groove are arc-shaped structures.
  • the balls are arranged symmetrically along the circumferential direction of the peripheral portion.
  • the balls are arranged at equal intervals.
  • the first grooves include multiple and spaced apart from each other, the number of the second grooves is matched with the first grooves, and the first grooves and the second grooves that are oppositely arranged
  • the grooves collectively form one receiving space, and the ball includes a plurality of balls, and each ball is clamped in each receiving space.
  • the lens group further includes a second lens disposed on the image side of the first lens
  • the lens module further includes a light shielding sheet interposed between the first lens and the second lens.
  • the shading sheet is stamped and formed.
  • connection surface is in contact with the second cylinder wall.
  • the lens module of the present invention is provided with a groove structure on the inner side of the first cylinder wall and the side of the peripheral portion of the first lens near the object side, and the two groove structures are directly opposite
  • a positioning block is provided in the space formed by the two grooves, and the positioning block is locked in the accommodating space and makes the first cylinder wall and the peripheral portion spaced apart.
  • there is a certain gap between the first tube wall and the peripheral part which can reduce the assembly deformation and reduce the difficulty of matching and forming the lens tube and the lens group.
  • the lens module only increases
  • the positioning block is used for card setting, has a simple structure, and is convenient to adjust, and finally makes the optical performance and reliability of the lens module good.
  • FIG. 1 is a schematic structural view of a lens module of the utility model
  • FIG. 2 is an enlarged view of part A shown in FIG. 1.
  • the present invention provides a lens module 100, which includes a lens barrel 1, a first lens 2 and a second lens housed in the lens barrel 1 in order from the object side to the image side 3.
  • the light shielding sheet 4 and the ball 5 interposed between the first lens 2 and the second lens 3.
  • the lens barrel 1 includes a first barrel wall 12 enclosing a through-hole, and a second barrel wall 11 bent and extending toward the image side from the edge of the first barrel wall 12 along the optical axis direction.
  • the lens module 100 includes at least the first lens 2. In this embodiment, only two lenses are used as an example for description. It may include three or more lenses, the principles of which are the same and applicable to any lens module.
  • the first lens 2 includes a main body portion 21 serving as an imaging area and a peripheral portion 22 that extends outwardly around the main body portion 21.
  • the main body portion 21 has an arc-shaped structure, such as a spherical structure, an aspherical structure, etc., for imaging; and the peripheral portion 22 is used for bearing.
  • the second lens 3 includes a second body portion 31 serving as an imaging area and a second peripheral portion 32 extending outward from the second body portion 31.
  • the peripheral portion 22 is disposed opposite to the first cylindrical wall 12.
  • the peripheral portion 22 includes an object side surface 221 and an image side surface 222, and a connecting surface 223 connecting the object side surface 221 and the image side surface 222 .
  • the connecting surface 223 is in contact with the second cylindrical wall 11, that is, the peripheral portion 22 and the second cylindrical wall 11 are completely attached.
  • a side of the first cylindrical wall 12 close to the first lens 2 is recessed in a direction away from the peripheral portion 22 to form a first recess 121, and the object side surface 221 is recessed toward the image side surface 222 to form a second recess A groove 224, an orthographic projection of the first groove 121 on the second groove 224 coincides with the second groove 224, and the first groove 121 and the second groove 224 are enclosed together A storage space 10, in which a positioning block is stored.
  • the positioning block is a ball 5.
  • the ball 5 is locked in the accommodating space 10 such that the first cylindrical wall 12 is spaced from the peripheral portion 22.
  • the gap between the first barrel wall 12 and the peripheral portion 22 can reduce the difficulty of assembling and molding the lens barrel and the lens assembly, as well as reduce assembly deformation and improve assembly yield.
  • the positioning block may also be a roller or other structure, as long as it can be accommodated in the accommodating space 10 so that there is no mutual compression between the first cylindrical wall 12 and the peripheral portion 22.
  • first groove 121 and the second groove 224 surrounding the receiving space 10 are both arc-shaped structures, and the balls 5 are arranged symmetrically along the circumferential direction of the peripheral portion 22.
  • This rolling connection structure makes the overall stability of the lens module stronger.
  • the balls 5 are arranged at equal intervals. Further improve the overall stability of the lens module.
  • the first groove 121 may also include a plurality of and spaced apart from each other, the number of the second grooves 224 matches the first groove 121, and the first groove 121 and the opposite
  • the second groove 224 collectively encloses a receiving space 10
  • the ball 5 includes a plurality of balls, and each of the balls 5 is locked in each receiving space 10.
  • the lens module 100 further includes a light shielding sheet 4 interposed between the peripheral portion 22 and the second peripheral portion 32, the light shielding sheet 4 is used to improve stray light, so that the lens module The optical performance of 100 is better.
  • the shading sheet 4 is formed by stamping, which has high production efficiency, good product reproducibility, and stable quality.
  • the lens module of the present invention is provided with a groove structure on the inner side of the first cylinder wall and the side of the peripheral portion of the first lens near the object side, and the two groove structures are directly opposite
  • a positioning block is provided in the space formed by the two grooves, and the positioning block is locked in the accommodating space and makes the first cylinder wall and the peripheral portion spaced apart.
  • the lens module only increases the positioning
  • the block is used for card setting, the structure is simple, and it is convenient to adjust, and finally the lens module has good optical performance and reliability.

Landscapes

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

Abstract

一种镜头模组，包括镜头筒（1）、镜片组以及定位块（5），镜头筒（1）包括第一筒壁（12）及第二筒壁（11），镜片组包括至少一个第一镜片（2），第一镜片（2）包括主体部（21）和周边部（22），周边部（22）与第一筒壁（12）相对设置，周边部（22）包括相对设置的物侧面（221）与像侧面（222）、以及连接物侧面（221）与像侧面（222）的连接面（223），第一筒壁（12）靠近第一镜片（2）的一侧向远离周边部（22）方向凹陷形成有第一凹槽（121），物侧面（221）朝像侧面（222）凹陷形成第二凹槽（224），第一凹槽（121）在第二凹槽（224）的正投影与第二凹槽（224）重合，且第一凹槽（121）与第二凹槽（224）共同围成收容空间（10）；定位块（5）卡设于收容空间（10）内并使得第一筒壁（12）与周边部（22）滚动连接。与相关技术相比，这种镜头模组结构简单、调节方便且可靠性好。

Description

镜头模组 技术领域
本实用新型涉及一种光学成像领域，尤其涉及一种运用于拍照摄像产品领域的镜头模组。
 背景技术
随着科技的不断发展，电子设备不断地朝着智能化发展，除了数码相机外，便携式电子设备例如平板电脑、手机等也都配备了拍照摄像功能的镜头模组，以满足用户随时拍照的需要。
相关技术的镜头模组包括镜头筒以及镜片组，所述镜头筒内有容纳空间，所述镜片组收容固定于所述容纳空间内，所述镜头筒围成通光孔的第一筒壁及由所述第一筒壁的边缘沿光轴方向朝像侧弯折延伸的第二筒壁，所述镜片组包括至少一个镜片，所述镜片包括充当成像区的主体部和环绕所述主体部向外延伸的周边部，所述第一筒壁盖设于所述周边部。
 技术问题
然而，相关技术中，所述镜头筒与所述镜片组在组装过程中，所述第一筒壁与所述周边部直接贴合，极容易引起组装变形，同时加大了所述镜头筒与所述镜片组的配合、成型难度，这将不利于所述镜头模组的光学性能与可靠性。
因此，实有必要提供一种新的镜头模组解决上述问题。
 技术解决方案
本实用新型的目的在于提供一种结构简单、调节方便且可靠性好的镜头模组。
为达到上述目的，本实用新型提供一种镜头模组，包括镜头筒、收容于所述镜头筒内的镜片组以及定位块；所述镜头筒包括围成通光孔的第一筒壁及由所述第一筒壁的边缘沿光轴方向朝像侧弯折延伸的第二筒壁，所述镜片组包括至少一个第一镜片，所述第一镜片包括充当成像区的主体部和环绕所述主体部向外延伸的周边部，所述周边部与所述第一筒壁相对设置，所述周边部包括相对设置的物侧面与像侧面、以及连接所述物侧面与所述像侧面的连接面，所述第一筒壁靠近所述第一镜片的一侧向远离所述周边部方向凹陷形成有第一凹槽，所述物侧面朝所述像侧面凹陷形成第二凹槽，所述第一凹槽在所述第二凹槽的正投影与所述第二凹槽重合，且所述第一凹槽与所述第二凹槽共同围成收容空间；所述定位块卡设于所述收容空间内并使得所述第一筒壁与所述周边部间隔设置。
优选的，所述定位块为滚珠，所述第一凹槽及所述第二凹槽均为弧形结构。
优选的，所述滚珠沿所述周边部的周向对称设置。
优选的，所述滚珠等间距设置。
优选的，所述第一凹槽包括多个且相互间隔设置，所述第二凹槽的数量与所述第一凹槽匹配设置，相对设置的所述第一凹槽与所述第二凹槽共同围成一个所述收容空间，所述滚珠包括多个，且每个所述滚珠卡设于每一所述收容空间内。
优选的，所述镜片组还包括设置于所述第一镜片像侧的第二镜片，所述镜头模组还包括夹设于所述第一镜片和所述第二镜片之间的遮光片。
优选的，所述遮光片为冲压成型。
优选的，所述连接面与所述第二筒壁抵接。
 有益效果
与相关技术相比，本实用新型的镜头模组在第一筒壁的内侧与第一镜片的周边部靠近物侧的一侧均设有凹槽结构，两处所述凹槽结构正对设置，两处所述凹槽组成的空间内设有定位块，所述定位块卡设于所述收容空间内并使得所述第一筒壁与所述周边部间隔设置。该种结构下的镜头模组在组装过程中由于第一筒壁与周边部存在一定的间隙，可以减少组装变形以及降低镜头筒与镜片组的配合、成型难度，同时该镜头模组只增加了定位块用于卡设，结构简单，又方便调节，最终使镜头模组的光学性能及可靠性好。
 附图说明
为了更清楚地说明本实用新型实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本实用新型的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图，其中：
图1为本实用新型镜头模组的结构示意图；
图2为图1中A所示部分放大图。
 本发明的实施方式
下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本实用新型的一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，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它实施例，都属于本实用新型保护的范围。
请参图1-2所示，本实用新型提供了一种镜头模组100，包括镜头筒1、由物侧至像侧依次收容于所述镜头筒1内的第一镜片2、第二镜片3、夹设于所述第一镜片2与所述第二镜片3之间的遮光片4以及滚珠5。
所述镜头筒1包括围成通光孔的第一筒壁12及由所述第一筒壁12的边缘沿光轴方向朝像侧弯折延伸的第二筒壁11。
所述镜头模组100至少包括第一镜片2，本实施方式中，只是以两片镜片为例进行说明，其可包括三片或更多镜片，其原理都一样，适用于任意镜头模组。
所述第一镜片2包括充当成像区的主体部21以及环绕所述主体部21向外延伸的周边部22。
所述主体部21呈弧形结构，如球面结构，非球面结构等，用于成像；所述周边部22用于承靠。
同理，所述第二镜片3包括充当成像区的第二主体部31及由所述第二主体部31向外延伸的第二周边部32。
所述周边部22与所述第一筒壁12相对设置，所述周边部22包括相对设置的物侧面221与像侧面222、以及连接所述物侧面221与所述像侧面222的连接面223。
本实施方式中，所述连接面223与所述第二筒壁11抵接，即所述周边部22与所述第二筒壁11之间完全贴合。
所述第一筒壁12靠近所述第一镜片2的一侧向远离所述周边部22方向凹陷形成有第一凹槽121，所述物侧面221朝所述像侧面222凹陷形成第二凹槽224，所述第一凹槽121在所述第二凹槽224的正投影与所述第二凹槽224重合，且所述第一凹槽121与所述第二凹槽224共同围成收容空间10，收容空间10内收容有定位块。
所述定位块为滚珠5，所述滚珠5卡设于所述收容空间10内并使得所述第一筒壁12与所述周边部22间隔设置。第一筒壁12与周边部22之间留有间隙可以降低镜头筒与镜片组组装的配合、成型难度，还可以减少组装变形， 提高组装良率。定位块也可以是滚轴或者其他结构，其只要能收容在收容空间10内并使得第一筒壁12与周边部22之间不存在相互挤压即可。
具体的，围成所述收容空间10的所述第一凹槽121及所述第二凹槽224均为弧形结构，所述滚珠5沿所述周边部22的周向对称设置。该种滚动连接结构使得镜头模组的整体稳定性更强。
更优的，所述滚珠5等间距设置。进一步提升了镜头模组的整体稳定性。
当然，所述第一凹槽121亦可包括多个且相互间隔设置，所述第二凹槽224的数量与所述第一凹槽121匹配设置，相对设置的所述第一凹槽121与所述第二凹槽224共同围成一个所述收容空间10，所述滚珠5包括多个，且每个所述滚珠5卡设于每一所述收容空间10内。该种增加的多个滚动连接结构可以更优地减少镜头筒与镜片组装过程中的组装变形，同时降低镜头筒与镜片组的配合、成型难度，提高镜头模组的整体稳定性。
另外，所述镜头模组100还包括夹设于所述周边部22和所述第二周边部32之间的遮光片4，所述遮光片4用于改善杂散光，使得所述镜头模组100的光学性能更好。
具体的，所述遮光片4采用冲压成型，该种冲压成型的生产效率高、制品的再现性好，同时质量稳定。
与相关技术相比，本实用新型的镜头模组在第一筒壁的内侧与第一镜片的周边部靠近物侧的一侧均设有凹槽结构，两处所述凹槽结构正对设置，两处所述凹槽组成的空间内设有定位块，所述定位块卡设于所述收容空间内并使得所述第一筒壁与所述周边部间隔设置。该结构下的镜头模组在组装过程中由于第一筒壁与周边部存在一定的间隙，可以减少组装变形以及降低镜头筒与镜片组的配合、成型难度，同时该镜头模组只增加了定位块用于卡设，结构简单，又方便调节，最终使镜头模组的光学性能及可靠性好。
以上所述的仅是本实用新型的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本实用新型创造构思的前提下，还可以做出改进，但这些均属于本实用新型的保护范围。

Claims (8)

  1. 一种镜头模组，包括镜头筒和收容于所述镜头筒内并具有光轴的镜片组，所述镜头筒包括开设通光孔的第一筒壁及由所述第一筒壁的边缘沿光轴方向朝像侧弯折延伸的第二筒壁，所述镜片组包括至少一个第一镜片，所述第一镜片包括充当成像区的主体部和环绕所述主体部向外延伸的周边部，所述周边部与所述第一筒壁相对设置，所述周边部包括相对设置的物侧面与像侧面、以及连接所述物侧面与所述像侧面的连接面，其特征在于，所述第一筒壁靠近所述第一镜片的一侧向远离所述周边部方向凹陷形成有第一凹槽，所述物侧面朝所述像侧面方向凹陷形成第二凹槽，所述第一凹槽在所述第二凹槽的正投影与所述第二凹槽重合，且所述第一凹槽与所述第二凹槽共同围成收容空间；所述镜头模组还包括定位块，所述定位块卡设于所述收容空间内并使得所述第一筒壁与所述周边部间隔设置。
  2. 根据权利要求1所述的镜头模组，其特征在于，所述定位块为滚珠，所述第一凹槽及所述第二凹槽均为弧形结构。
  3. 根据权利要求2所述的镜头模组，其特征在于，所述滚珠沿所述周边部的周向对称设置。
  4. 根据权利要求3所述的镜头模组，其特征在于，所述滚珠等间距设置。
  5. 根据权利要求2所述的镜头模组，其特征在于，所述第一凹槽包括多个且相互间隔设置，所述第二凹槽的数量与所述第一凹槽匹配设置，相对设置的所述第一凹槽与所述第二凹槽共同围成一个所述收容空间，所述滚珠包括多个，且每个所述滚珠卡设于每一所述收容空间内。
  6. 根据权利要求1所述的镜头模组，其特征在于，所述镜片组还包括设置于所述第一镜片像侧的第二镜片，所述镜头模组还包括夹设于所述第一镜片和所述第二镜片之间的遮光片。
  7. 根据权利要求6所述的镜头模组，其特征在于，所述遮光片为冲压成型。
  8. 根据权利要求1所述的镜头模组，其特征在于，所述连接面与所述第二筒壁抵接。
PCT/CN2019/110478 2018-11-19 2019-10-10 镜头模组 WO2020103600A1 (zh)

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CN209198738U (zh) * 2018-11-19 2019-08-02 瑞声科技(新加坡)有限公司 镜头模组
CN112684576B (zh) * 2020-12-28 2022-05-06 杭州行开医学影像技术有限公司 一种可以从光线中分离出不同视角的视图的镜片组

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