WO2021000299A1 - 镜头模组 - Google Patents

镜头模组 Download PDF

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Publication number
WO2021000299A1
WO2021000299A1 PCT/CN2019/094606 CN2019094606W WO2021000299A1 WO 2021000299 A1 WO2021000299 A1 WO 2021000299A1 CN 2019094606 W CN2019094606 W CN 2019094606W WO 2021000299 A1 WO2021000299 A1 WO 2021000299A1
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WO
WIPO (PCT)
Prior art keywords
lens
image side
lens module
object side
light
Prior art date
Application number
PCT/CN2019/094606
Other languages
English (en)
French (fr)
Inventor
韦传冬
Original Assignee
瑞声光学解决方案私人有限公司
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Filing date
Publication date
Application filed by 瑞声光学解决方案私人有限公司 filed Critical 瑞声光学解决方案私人有限公司
Priority to PCT/CN2019/094606 priority Critical patent/WO2021000299A1/zh
Priority to CN201921051636.3U priority patent/CN210090801U/zh
Priority to US16/916,148 priority patent/US20210003749A1/en
Priority to JP2020113816A priority patent/JP6889794B2/ja
Publication of WO2021000299A1 publication Critical patent/WO2021000299A1/zh

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/021—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
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/003—Light absorbing 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

Definitions

  • This application relates to the field of optical technology, and in particular to a lens module.
  • the lens barrel restricts light from a large field of view, which affects lens molding and cannot be applied to ultra-wide-angle lenses.
  • the purpose of the present application is to provide a lens module, which can reduce stray light without blocking the light of a large field of view, and is easy to form.
  • a lens module comprising a lens barrel and a lens group housed in the lens barrel.
  • the lens barrel includes a barrel wall with a light-passing hole, and the barrel wall includes an object side near the object side and a lens group near the image.
  • Side image side and a connecting surface connecting the object side and the image side, the lens group includes a first lens close to the object side, the first lens includes an upper surface close to the object side, the upper surface includes The arc-shaped portion and the peripheral portion provided around the arc-shaped portion, the object side surface includes a flat surface and an inclined surface extending obliquely from the flat surface toward the image side to the connecting surface; the connecting surface is self-contained
  • the connecting part of the inclined surface extends obliquely to the inner side of the image side in a direction away from the optical axis, the connecting surface and the arc-shaped part are arranged at a relative interval, and a light shield is arranged between the tube wall and the first lens Pieces.
  • the light-shielding member is a light-shielding layer disposed on the upper surface, and the light-shielding layer is located between the connecting surface and the upper surface and is formed by the penetration of dot ink.
  • the light shielding layer is a black ink layer.
  • the light shielding layer has a hollow ring structure.
  • the connecting surface and the upper surface are both matted surfaces, and at least one of the two is provided with a diversion gap for ink dispensing.
  • the inclined surface and the optical axis form a first included angle ⁇ 1, and the first included angle satisfies 30° ⁇ 1 ⁇ 90°.
  • the connecting surface and the optical axis form a second included angle ⁇ 2, and the second included angle satisfies 0° ⁇ 2 ⁇ 60°.
  • the image side surface is flat.
  • the image side abuts against the upper surface.
  • the lens module further includes at least one second lens arranged on the image side of the first lens.
  • the beneficial effect of the light-shielding structure provided in the present application is to provide a lens module including a lens barrel and a lens group housed in the lens barrel, the lens barrel includes a barrel wall with a light hole, and the barrel wall includes an object close to the object side.
  • the lens group includes a first lens close to the object side.
  • the first lens includes an upper surface close to the object side.
  • the upper surface includes a curved portion and a
  • the peripheral part around the arc-shaped part, the object side surface includes a plane and an inclined surface extending from the plane toward the image side obliquely to the connecting surface; the connecting surface extends obliquely from the connection with the inclined surface in a direction away from the optical axis to the image side surface,
  • the connecting surface and the arc-shaped part are relatively spaced apart; a light shield is also arranged between the barrel wall and the first lens.
  • FIG. 1 is a schematic cross-sectional structure diagram of a lens module provided by this application.
  • FIG. 2 is a schematic cross-sectional structure diagram of the lens barrel provided by this application.
  • Fig. 3 is a schematic cross-sectional view of the lens assembly provided by the application.
  • the present application discloses a lens module 100, as shown in FIGS. 1-3, comprising a lens barrel 1 and a lens group 2 housed in the lens barrel 1.
  • the lens barrel 1 includes a barrel wall 11 having a light hole 10, and the barrel
  • the wall 11 includes an object side surface 111 close to the object side 1a, an image side surface 112 close to the image side 1b, and a connecting surface 113 connecting the object side surface 111 and the image side surface 112.
  • the lens group 2 includes a first lens 21 close to the object side 1a.
  • the lens 21 includes an upper surface 211 close to the object side 1a.
  • the upper surface 211 includes an arc-shaped portion 211a and a peripheral portion 211b provided around the arc-shaped portion 211a.
  • the object side surface 111 includes a flat surface and is separated from the flat surface 111a and the inclined surface 111b.
  • 111b extends obliquely from the outside to the image side 1b to the connecting surface 113;
  • the connecting surface 113 extends obliquely from the connection with the inclined surface 111b in the direction away from the optical axis O to the image side surface 112, the connecting surface 113 and the arc part 211a are arranged at relatively intervals; and a light shielding member is arranged between the barrel wall 11 and the first lens 21.
  • the shading member when the light is reflected to the part where the barrel wall 11 and the first lens 21 are in contact, the shading member can play a role in absorbing light, thereby preventing the light from continuing to spread in the lens group 2, and thereby reducing
  • the stray light generated in the lens set 2 is reduced, that is, the stray light generated in the lens module 100 is reduced.
  • the lens module 100 provided by the embodiment of the present application can prevent the light incident on the lens barrel 1 from being reflected back to the first lens 21 to form stray light. In this way, stray light can be reduced, It does not block the light of the large field of view, and the lens module 100 is easy to form.
  • the light-shielding member is a light-shielding layer 3 arranged between the connecting surface 113 and the upper surface 211 and formed by dot ink penetration; known, the light-shielding layer 3 is formed by dot ink penetration, and the color of the ink can be based on its different light absorption Features to choose.
  • the light shielding layer 3 is preferably set as a black ink layer.
  • the black ink layer has better light absorption ability than other color ink layers.
  • the main component of the black ink layer is carbon, it has strong adhesion. It can be seen that the adhesion between the black ink layer and the connection surface 113 and the upper surface 211 is higher.
  • a black ink layer is formed.
  • the physical phenomenon of Brownian motion of the black ink can cause the black ink to diffuse and flow into between the connecting surface 113 and the upper surface 211 , Thereby forming a black ink layer.
  • the light shielding layer 3 has a hollow ring structure.
  • both the connecting surface 113 and the upper surface 211 are surfaces subjected to matting treatment, and the matting effect of the connecting surface 113 and the upper surface 211 can be enhanced by the matting treatment.
  • the matting treatment can be achieved by increasing the roughness of the connecting surface 113 and the upper surface 211.
  • the inclined surface 111b and the optical axis O form a first included angle ⁇ 1, and the first included angle satisfies 30° ⁇ 1 ⁇ 90°.
  • the connecting surface 113 and the optical axis O form a second included angle ⁇ 2, and the second included angle satisfies 0° ⁇ 2 ⁇ 60°.
  • the lens module 100 that can be easily molded can be set by adjusting the sizes of ⁇ 1 and ⁇ 2, while meeting the requirements of reducing stray light and not blocking light of a large field of view.
  • the image side surface 112 is flat, and the image side surface 112 abuts the upper surface 211; and as can be seen from FIGS. 1 and 2, the image side surface 112 and the peripheral portion 211b of the upper surface 211 are attached without gaps .
  • the lens module 100 further includes at least one second lens 22 provided on the image side 1 b of the first lens 21, and specifically may include a lens 221, a lens 222, a lens 223 and a lens 224.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined with “first” and “second” may explicitly or implicitly include one or more of these features.
  • the terms “including” and “having” and any variations thereof in the embodiments herein are intended to cover non-exclusive inclusions.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lens Barrels (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

一种镜头模组(100)，包括镜头筒(1)和收容于镜头筒(1)内的镜片组(2)，镜头筒(1)包括具有通光孔(10)的筒壁(11)，筒壁(11)包括靠近物侧(1a)的物侧面(111)、靠近像侧(1b)的像侧面(112)以及连接物侧面(111)和像侧面(112)的连接面(113)，镜片组(2)包括靠近物侧(1a)的第一镜片(21)，第一镜片(21)包括靠近物侧(1a)的上表面(211)，上表面(211)包括弧形部(211a)和设于弧形部(211a)周围的周边部(211b)，物侧面(111)包括一平面(111a)及自平面(111a)向靠近像侧(1b)的方向倾斜延伸至连接面(113)的斜面(111b)；连接面(113)自与斜面(111b)的连接处向远离光轴(O)的方向倾斜延伸至像侧面(112)，连接面(113)与弧形部(211a)相对间隔设置；筒壁(11)与第一镜片(21)之间设有遮光件。通过设置斜面(111b)及遮光件有利于形成合理的与超广角镜头相适配的通光孔结构，既能减少杂散光，又不遮挡大视场光线，并且易于成型。

Description

镜头模组 技术领域
本申请涉及光学技术领域，尤其涉及一种镜头模组。
 背景技术
随着光学成像技术的日渐成熟，诸如照相机、摄像机、望远镜等各类成像产品也普及到千家万户，便携式电子设备例如平板电脑、手机等也都配备了镜头模组；镜头模组的设计一直是此类产品成像质量的关键所在。
 技术问题
但是，由于目前镜头模组中镜头筒的通光孔结构设计不合理，导致镜头筒会限制大视场角度光线，影响镜头成型，无法适用于超广角镜头。
因此，有必要提供一种新的镜头模组，以构成适用于超广角镜头的通光孔结构。
 技术解决方案
本申请的目的在于提供一种镜头模组，该镜头模组既能减少杂散光，又不遮挡大视场光线，并且易于成型。
本申请的技术方案如下：
提供了一种镜头模组，包括镜头筒和收容于所述镜头筒内的镜片组，所述镜头筒包括具有通光孔的筒壁，所述筒壁包括靠近物侧的物侧面、靠近像侧的像侧面以及连接所述物侧面和所述像侧面的连接面，所述镜片组包括靠近物侧的第一镜片，所述第一镜片包括靠近物侧的上表面，所述上表面包括弧形部和设于所述弧形部周围的周边部，所述物侧面包括一平面及自所述平面向靠近像侧的方向倾斜延伸至所述连接面的斜面；所述连接面自与所述斜面的连接处向远离光轴的方向倾斜延伸至所述像侧面的内侧，所述连接面与所述弧形部相对间隔设置，所述筒壁与所述第一镜片之间设置遮光件。
作为一种改进，所述遮光件为设置在所述上表面上的遮光层，所述遮光层位于所述连接面与所述上表面之间且由点墨渗透形成。
作为一种改进，所述遮光层为黑色墨水层。
作为一种改进，所述遮光层为中空环状结构。
作为一种改进，所述连接面与所述上表面均为经过消光处理的表面，且二者中的至少一者上开设有用于点墨的导流缺口。
作为一种改进，在包含光轴的截面上，所述斜面与光轴形成第一夹角θ1，所述第一夹角满足30°≤θ1≤90°。
作为一种改进，在包含光轴的截面上，所述连接面与光轴形成第二夹角θ2，所述第二夹角满足0°≤θ2≤60°。
作为一种改进，所述像侧面为平面。
作为一种改进，所述像侧面与所述上表面抵接。
作为一种改进，所述镜头模组还包括设于所述第一镜片的像侧的至少一个第二镜片。
 有益效果
本申请提供的遮光结构的有益效果在于：提供一种镜头模组，包括镜头筒和收容于镜头筒内的镜片组，镜头筒包括具有通光孔的筒壁，筒壁包括靠近物侧的物侧面、靠近像侧的像侧面以及连接物侧面和像侧面的连接面，镜片组包括靠近物侧的第一镜片，第一镜片包括靠近物侧的上表面，上表面包括弧形部和设于弧形部周围的周边部，物侧面包括平面及自该平面向靠近像侧的方向倾斜延伸至连接面的斜面；连接面自与斜面的连接处向远离光轴的方向倾斜延伸至像侧面，连接面与弧形部相对间隔设置；在筒壁与第一镜片之间还设置有遮光件。通过设置斜面及遮光片有利于形成合理的与超广角镜头相适配的通光孔结构，既能减少杂散光，又不遮挡大视场光线，并且易于成型。
 附图说明
图1为本申请提供的镜头模组的剖视结构示意图；
图2为本申请提供的镜头筒的剖视结构示意图；
图3为本申请提供的镜片组的剖视结构示意图。
指定图1为摘要附图。
 本发明的实施方式
下面结合附图和实施方式对本申请作进一步说明。
本申请公开了一种镜头模组100，如图1-3所示，包括镜头筒1和收容于镜头筒1内的镜片组2，镜头筒1包括具有通光孔10的筒壁11，筒壁11包括靠近物侧1a的物侧面111、靠近像侧1b的像侧面112以及连接物侧面111和像侧面112的连接面113，镜片组2包括靠近物侧1a的第一镜片21，第一镜片21包括靠近物侧1a的上表面211，上表面211包括弧形部211a和设于弧形部211a周围的周边部211b，物侧面111包括一平面及自所述平面111a及斜面111b，斜面111b由外向内并向靠近像侧1b的方向倾斜延伸至连接面113；连接面113自与斜面111b的连接处向远离光轴O的方向倾斜延伸至像侧面112，连接面113与弧形部211a相对间隔设置；并且，筒壁11与第一镜片21之间设置遮光件。
如此设置后，当光线被反射到筒壁11与第一镜片21相接触的部位时，遮光件能够起到吸光的作用，从而阻止了该光线在镜片组2内的继续传播，并由此减少了镜片组2内产生的杂光，即减少了镜头模组100内产生的杂光。相对于现有技术而言，本申请的实施方式提供的镜头模组100能使入射到镜头筒1上的光不会被反射回第一镜片21形成杂散光，如此，既能减少杂散光，又不遮挡大视场光线，并且镜头模组100易于成型。
进一步地，遮光件为设置在连接面113与上表面211之间且由点墨渗透形成的遮光层3；已知地，遮光层3由点墨渗透形成，墨的颜色可以根据其不同的吸光特性进行选择。本实施例中，遮光层3优选设置为黑色墨水层。一方面，黑色墨水层吸光能力优于其它颜色的墨水层。另一方面，由于黑色墨水层的主要成分为碳，其具有较强的附着力，由此可知，黑色墨水层与连接面113与上表面211的贴合度更高。黑色墨水渗透凝固后即形成黑色墨水层，在黑色墨水层的形成过程中，通过黑色墨水具有的布朗运动这一物理现象，即可使得黑色墨水扩散并流入至连接面113与上表面211之间，从而形成黑色墨水层。
作为一种改进，该遮光层3为中空环状结构。作为一种改进，连接面113与上表面211均为经过消光处理的表面，通过消光处理可以加强连接面113与上表面211的消光效果。一种实施例，消光处理可以通过增加连接面113与上表面211的粗糙度来实现。当黑色墨水通过分子扩散的方式流入至连接面113与上表面211之间时，为了避免滴至连接面113与上表面211之间的墨水流入其它部位，优选地，连接面113与上表面211中的至少一者上开设有用于点墨的导流缺口（图未示）。
在一个实施例中，请参阅图2，在包含光轴O的截面上，斜面111b与光轴O形成第一夹角θ1，第一夹角满足30°≤θ1≤90°。
在一个实施例中，请继续参阅图2，在包含光轴O的截面上，连接面113与光轴O形成第二夹角θ2，第二夹角满足0°≤θ2≤60°。
本实施方式中，可以通过调整θ1和θ2的大小设置易于成型的镜头模组100，同时满足减少杂散光和不遮挡大视场光线的要求。
在一个实施例中，像侧面112为平面，并且像侧面112与上表面211抵接；且从图1和图2中可以看出，像侧面112与上表面211的周边部211b无间隙贴合。
在一个实施例中，请参阅图3，镜头模组100还包括设于第一镜片21的像侧1b的至少一个第二镜片22，具体可以包括镜片221、镜片222、镜片223和镜片224。
需要说明的是，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。本文实施例的术语“包括”和“具有”以及它们任何变形，意图在于覆盖不排他的包含。
以上的仅是本申请的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本申请创造构思的前提下，还可以做出改进，但这些均属于本申请的保护范围。

Claims (10)

  1. 一种镜头模组，包括镜头筒和收容于所述镜头筒内的镜片组，所述镜头筒包括具有通光孔的筒壁，所述筒壁包括靠近物侧的物侧面、靠近像侧的像侧面以及连接所述物侧面和所述像侧面的连接面，所述镜片组包括靠近物侧的第一镜片，所述第一镜片包括靠近物侧的上表面，所述上表面包括弧形部和设于所述弧形部周围的周边部，其特征在于，所述物侧面包括一平面及一自所述平面向靠近像侧的方向倾斜延伸至所述连接面的斜面；所述连接面自与所述斜面的连接处向远离光轴的方向倾斜延伸至所述像侧面，所述连接面与所述弧形部相对间隔设置，所述筒壁与所述第一镜片之间设置遮光件。
  2. 根据权利要求1所述的镜头模组，其特征在于，所述遮光件为设置在所述上表面上的遮光层，所述遮光层位于所述连接面与所述上表面之间且由点墨渗透形成。
  3. 根据权利要求2所述的镜头模组，其特征在于，所述遮光层为黑色墨水层。
  4. 根据权利要求2所述的镜头模组，其特征在于，所述遮光层为中空环状结构。
  5. 根据权利要求2所述的镜头模组，其特征在于，所述连接面与所述上表面均为经过消光处理的表面，且二者中的至少一者上开设有用于点墨的导流缺口。
  6. 根据权利要求1-5中任一项所述的镜头模组，其特征在于，在包含光轴的截面上，所述斜面与光轴形成第一夹角θ1，所述第一夹角满足30°≤θ1≤90°。
  7. 根据权利要求6所述的镜头模组，其特征在于，在包含光轴的截面上，所述连接面与光轴形成第二夹角θ2，所述第二夹角满足0°≤θ2≤60°。
  8. 根据权利要求6所述的镜头模组，其特征在于，所述像侧面为平面。
  9. 根据权利要求8所述的镜头模组，其特征在于，所述像侧面与所述上表面抵接。
  10. 根据权利要求1所述的镜头模组，其特征在于，所述镜头模组还包括设于所述第一镜片的像侧的至少一个第二镜片。
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US16/916,148 US20210003749A1 (en) 2019-07-03 2020-06-30 Lens module
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TWI696010B (zh) * 2019-09-17 2020-06-11 大立光電股份有限公司 成像鏡頭、相機模組與電子裝置
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