WO2015078390A1 - 滤镜及包括该滤镜的镜头 - Google Patents

滤镜及包括该滤镜的镜头 Download PDF

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Publication number
WO2015078390A1
WO2015078390A1 PCT/CN2014/092398 CN2014092398W WO2015078390A1 WO 2015078390 A1 WO2015078390 A1 WO 2015078390A1 CN 2014092398 W CN2014092398 W CN 2014092398W WO 2015078390 A1 WO2015078390 A1 WO 2015078390A1
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Prior art keywords
lens
filter
filter frame
sealing mechanism
mounting portion
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PCT/CN2014/092398
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English (en)
French (fr)
Inventor
陆毅
罗斯·罗伯特·迈克尔
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刘昊
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Publication of WO2015078390A1 publication Critical patent/WO2015078390A1/zh

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    • 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
    • G03B11/00—Filters or other obturators specially adapted for photographic purposes

Definitions

  • the present invention relates to a photographic and imaging device, and more particularly to a filter and a lens including the same.
  • Photographic and camera filters are commonly used photographic camera accessories that are threaded to the front end of a photographic camera lens. Photographic and camera filters are mainly used to block UV rays, protect lenses, and photographic effects that cannot be adjusted later in various digital products.
  • the existing filter as shown in Fig. 1, includes a filter frame 1, a lens 3 and a press ring 4, wherein the sealing of the joints of the components is poor, so that air, fine dust, etc. can enter through the gap between the joints between the components. Lens.
  • the present invention is directed to a filter that is capable of sealingly protecting a lens, thereby effectively preventing air and fine dust from entering the lens.
  • the present invention also provides a lens including the filter.
  • a filter comprising: a cylindrical filter frame having a first end and a second end opposite the first end, the first of the filter frame The end is provided with a connecting device, and the inner wall of the filter frame is provided with a pressing ring mounting portion and a lens mounting portion in an axially inward direction from the first end thereof; the lens is mounted on the lens mounting portion; and the pressing ring is mounted on the pressing ring On the mounting portion, the pressure ring is pressed against the lens in the mounted state, a first sealing mechanism is disposed between the lens and the lens mounting portion, and/or a second sealing mechanism is disposed on the outer wall of the filter frame.
  • the present invention prevents air, by providing a first sealing mechanism between the lens and the lens mounting portion and/or providing a second sealing mechanism on the outer wall of the filter frame to seal the lens to be mounted and the filter frame.
  • the dust and the like enter the lens along the joint between the lens and the filter frame and/or the connection between the lens and the filter frame, effectively providing sealing protection for the lens.
  • the first sealing mechanism comprises a first sealing ring or a sealing material applied to the lens and/or the lens mounting portion.
  • the sealing material is a glue or a coating.
  • the second sealing mechanism comprises a second sealing ring.
  • the filter frame is at the lens mounting portion.
  • the first surface opposite the lens is provided with a first groove, and the first sealing mechanism is mounted in the first groove.
  • the first surface is an annular surface extending radially inward from the inner wall of the filter frame and axially supporting the lens.
  • the first surface is an axially extending surface opposite the outer wall of the lens
  • the first groove is an annular groove that is radially outwardly recessed from the first surface
  • the sealing mechanism is preferably positioned, preferably the outer wall of the filter frame is provided with a second seal.
  • the second mounting surface of the second sealing mechanism mounting portion is provided with a second recess, and the second sealing mechanism is installed in the second recess.
  • the second surface is an annular surface extending radially outward along the outer wall of the filter frame.
  • a lens comprising a first end coupled to a body of a camera/camera and a second end remote from the body, the second end of the lens being provided with connecting means for The connecting means of the filter cooperates, and the second sealing mechanism is disposed between the second end of the lens and the filter frame.
  • the filter of the present invention and the lens including the same are provided with a first sealing mechanism between the lens and the lens mounting portion and/or a lens and a filter frame disposed on the outer wall of the filter frame. a second sealing mechanism sealed between the lens, thereby preventing air, dust, etc. from entering the lens along the junction between the lens and the filter frame and/or the connection between the lens and the filter frame, providing a good lens Sealed protection.
  • FIG. 1 is a cross-sectional view and a partial enlarged view of a prior art filter along a longitudinal center line;
  • Figure 2 is a perspective view showing the structure of one embodiment of the filter of the present invention.
  • Figure 3 shows an exploded view of the filter of Figure 2
  • Figure 4a is a cross-sectional structural view and a partial enlarged view of the filter of Figure 2 along the longitudinal center line;
  • Figure 4b is a partially enlarged cross-sectional structural view showing the lens mounted in cooperation with Figure 4a;
  • Fig. 5 is a cross-sectional structural view showing a longitudinal center line of another embodiment of the filter of the present invention and a cross-sectional structural view of a partial dispensing.
  • the present embodiment provides a filter 100 including a cylindrical filter frame 10, a lens 30, and a press ring 40.
  • the cylindrical filter frame 10 has a first end and a second end opposite the first end.
  • the first end of the filter frame 10 is provided with a connecting means for connection with the lens 60.
  • the inner wall of the filter frame 10 is provided with a press ring mounting portion and a lens mounting portion in this order from the first end thereof in the axial direction.
  • the lens 30 is mounted on the lens mounting portion.
  • the press ring 40 is mounted on the press ring mounting portion, and the press ring 40 presses the lens 30 in the mounted state.
  • a first sealing mechanism is provided between the lens 30 and the lens mounting portion for sealing the joint between the lens 30 and the filter frame 10, thereby preventing air, dust, and the like from entering the lens 60 from the joint.
  • a second sealing mechanism capable of sealing between the lens 60 to be mounted and the filter frame 10 may be disposed at a position of the outer wall of the filter frame 10 at the inner side of the connecting device to prevent air, dust, etc. The lens 60 is entered from the junction between the lens 60 and the filter frame 10.
  • the first sealing mechanism may be the first sealing ring 20 or a sealing material such as glue or paint applied to the lens 30 and/or the lens mounting portion.
  • the second sealing mechanism preferably includes a second sealing ring 50.
  • the cross section of the first sealing ring 20 and the second sealing ring 50 may be a circle, an ellipse as shown in FIG. 4b or a rectangle as shown in FIG. 5, and of course other shapes, as long as It is sufficient to achieve a seal between the joints.
  • the filter 100 of the present embodiment prevents air, dust, and the like from entering the lens 60 from the joint between the lens 30 and the filter frame 10 by providing a first sealing mechanism between the lens 30 and the lens mounting portion, effectively The stain of the lens 60 is prevented.
  • the second sealing mechanism disposed on the outer wall of the filter frame 10 effectively prevents air, dust, and the like from passing along the lens 60 and the filter frame 10. The connection between the two enters the lens 60, further providing sealing protection for the lens 60.
  • the first sealing mechanism is effectively positioned, preferably as shown in Figure 4a.
  • the filter frame 10 is provided with a first recess 12 in the first surface 121 of the lens mounting portion opposite to the lens 30, and the first sealing mechanism is mounted in the first recess 12.
  • the first surface 121 is an annular surface extending radially inward from the inner wall of the filter frame 10 and axially supporting the lens 30.
  • the first groove 12 is an annular concave extending axially from the first surface 121 toward the second end of the filter frame 10 groove.
  • first surface 12 may be an axially extending surface that is disposed opposite the sidewall of the lens 30, and the first groove 12 may be radially oriented from the axially extending first surface 12.
  • the inner annular recessed groove does not depart from the scope of the present invention.
  • the outer wall of the filter frame 10 is provided with a second sealing mechanism mounting portion at a position inside the connecting device, and the second sealing mechanism mounting portion is to be mounted.
  • the second surface 11 opposite to the lens 60 is provided with a second recess, and the second sealing mechanism is mounted in the second recess.
  • the second surface 11 is an annular surface extending radially outward along the outer wall of the filter frame 10, and the second groove is axially extending from the annular second surface 11 toward the second end of the filter frame 10. Annular groove.
  • the second surface may also be an axially extending surface that is disposed opposite the inner sidewall of the lens 60, and the second recess may be radially inwardly recessed from the second axially extending surface.
  • the annular groove does not depart from the scope of the present invention.
  • the present invention also provides a lens comprising a first end coupled to a body of the camera/camera and a second end remote from the body.
  • the second end of the lens 60 is provided with a connecting device for cooperating with the connecting device of the filter 100 described above, and the second sealing mechanism is disposed between the second end of the lens 60 and the filter frame 10.
  • the lens includes a lens 60 and a filter 100 threaded to the outer end of the lens 60.
  • the filter 100 comprises a filter frame 10, a lens 30, a pressing ring 40, a first sealing ring 20 and a second sealing ring 50 having a circular or elliptical cross section.
  • the second sealing ring 50 is attached to the second surface 11 of the filter frame 10
  • the first sealing ring 20 is attached to the first groove 12 of the filter frame 10 .
  • the lens 30, the filter frame 10, the press ring 40, and the first seal ring 20 are formed as a unit, and the filter 100 is installed.
  • the filter frame 100 When the filter 100 is mounted to the lens 60, the filter frame 100 is integrally locked with the external thread 13 on the connecting device at its first end and the internal thread 62 of the lens 60 as shown in Fig. 4b. After locking, the surface 61 on the lens 60 abuts the upper end surface of the second sealing ring 50 as shown in FIG. 4a, and the lower end surface of the second sealing ring 50 abuts against the second surface 11 of the filter frame 10, thereby achieving sealing.
  • the purpose of the gap between the lens 60 and the threaded connection of the filter frame 10 prevents air and fine dust from entering the lens 60 from the external thread of the filter frame 10.
  • the first seal ring 20 and the second seal ring 50 may each have a rectangular shape, such as a rectangular shape, in the form of a rectangular gasket, which also achieves a sealing function.
  • the sealing member may not be used.
  • the first sealing mechanism may also be a sealing material such as glue or paint applied to the lens 30 and/or the filter frame 10, which can realize the sealing lens 30 and the filter frame 10. The gap between the joints prevents the air, dust, and the like from entering the space in the upper end surface of the lens 30.
  • the filter 100 of the present embodiment and the lens including the filter prevent air, dust, etc. from the lens 30 and the filter frame by providing a first sealing mechanism between the lens 30 and the lens mounting portion.
  • the connection between the 10 enters the lens 60, effectively preventing the lens 60 from being stained.
  • the second sealing mechanism disposed on the outer wall of the filter frame 10 effectively prevents air, dust, and the like from passing along the lens 60 and the filter frame 10.
  • the connection between the two enters the lens, further providing sealing protection for the lens 60.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Lens Barrels (AREA)
  • Blocking Light For Cameras (AREA)

Abstract

一种滤镜（100）及包括该滤镜（100）的镜头。该滤镜（100）包括：筒状的滤镜框（10）、镜片（30）和压圈（40）。滤镜框（10）具有第一端和与该第一端相对的第二端，滤镜框（10）的第一端设置有连接装置，滤镜框（10）的内壁自其第一端沿轴向向内依次设有压圈安装部和镜片安装部。镜片（30）安装在镜片安装部上。压圈（40）安装在压圈安装部上，且压圈（40）在安装状态下压紧镜片（30）。镜片（30）和镜片安装部之间设有第一密封机构（20）和/或在滤镜框（10）的外壁上设有第二密封机构（50）。镜头包括与机身连接的第一端和远离机身的第二端，镜头的第二端连接有上述滤镜（100）。镜头安装在连接装置上，镜头的第二端与滤镜框（10）之间通过第二密封机构（50）密封。该滤镜（100）及包括该滤镜（100）的镜头有效地防止了空气、微尘等进入镜头。

Description

滤镜及包括该滤镜的镜头 技术领域
本发明涉及摄影摄像用器材，尤其涉及滤镜及包括该滤镜的镜头。
背景技术
摄影、摄像滤镜是常用的摄影摄像附件，其通过螺纹紧锁在摄影摄像镜头的前端。摄影、摄像滤镜主要用于拦截紫外线、保护镜头、及用于各种数码产品后期无法调整的摄影效果上。现有滤镜，如图1所示，包括滤镜框1、镜片3和压圈4，其中各部件连接处的密封性较差，致使空气、微尘等能通过部件间连接处的间隙进入镜头。
发明内容
因此，本发明旨在提供一种滤镜，其能够对镜头进行密封保护，从而有效地防止空气及微尘进入镜头。另外，本发明还提供了一种包括该滤镜的镜头。
为了实现上述目的，根据本发明的一个方面，提供了一种滤镜，包括：筒状的滤镜框，具有第一端和与该第一端相对的第二端，滤镜框的第一端设置有连接装置，滤镜框的内壁自其第一端沿轴向向内地依次设有压圈安装部和镜片安装部；镜片，安装在镜片安装部上；以及压圈，安装在压圈安装部上，且压圈在安装状态下压紧镜片，镜片与镜片安装部之间设有第一密封机构和/或在滤镜框的外壁上设有第二密封机构。
本发明通过在镜片与镜片安装部之间设置第一密封机构和/或在滤镜框的外壁上设置第二密封机构以将欲安装的镜头与滤镜框之间密封，从而防止了空气、微尘等沿镜片与滤镜框之间的连接处和/或镜头与滤镜框之间的连接处进入镜头，有效地为镜头提供了密封保护。
可选地，第一密封机构包括第一密封圈，或是涂抹于镜片和/或镜片安装部上的密封材料。
优选地，密封材料为胶水或涂料。
优选地，第二密封机构包括第二密封圈。
为了方便第一密封机构的安装，其是在包括呈圆形或椭圆形横截面的第一密封圈时更好地定位第一密封机构，优选地，滤镜框在镜片安装部的 与镜片相对的第一表面设有第一凹槽，第一密封机构安装在第一凹槽内。
可选地，第一表面为自滤镜框内壁径向向内延伸并沿轴向支承镜片的环形表面。
或者可选地，第一表面为与镜片的外壁相对的轴向延伸的表面，第一凹槽为自第一表面径向向外凹陷的环形凹槽。
同样地为了方便第二密封机构的安装，尤其是在包括呈圆形或椭圆形横截面的第二密封圈时更好地定位该密封机构，优选地，滤镜框的外壁设有第二密封机构安装部，第二密封机构安装部的第二表面上设有第二凹槽，第二密封机构安装在第二凹槽内。
为了便于加工和安装第二密封机构，优选地，第二表面为沿滤镜框外壁径向向外延伸的环形表面。
根据本发明的另一方面，提供了一种镜头，包括与照相机/摄像机的机身连接的第一端和远离机身的第二端，镜头的第二端设有连接装置，用来与上述滤镜的连接装置相配合，第二密封机构设在镜头的第二端与滤镜框之间。
综上所述，本发明的滤镜及包括该滤镜的镜头，通过在镜片与镜片安装部之间设置第一密封机构和/或在滤镜框的外壁上设置可将镜头与滤镜框之间密封的第二密封机构，从而防止了空气、微尘等沿镜片与滤镜框之间的连接处和/或镜头与滤镜框之间的连接处进入镜头，很好地为镜头提供了密封保护。
附图说明
以下，结合附图来详细说明本发明的实施例，其中：
图1示出了现有技术中的滤镜的沿纵向中心线的剖视示意图以及局部放大图；
图2示出本发明的滤镜的一个实施例的立体结构示意图；
图3示出了图2中的滤镜的分解视图；
图4a示出了图2中的滤镜的沿纵向中心线的剖视结构示意图以及局部放大图；
图4b示出了与图4a配合安装的镜头的局部放大剖视结构示意图；
图5示出了本发明的滤镜的另一实施例的沿纵向中心线的剖视结构示意图以及局部发放的剖视结构示意图。
具体实施方式
如图2和图3所示，本实施例提供了一种滤镜100，包括筒状的滤镜框10、镜片30以及压圈40。其中，如图4a和4b所示，筒状的滤镜框10具有第一端和与该第一端相对的第二端。滤镜框10的第一端设置有连接装置，以与镜头60连接。滤镜框10的内壁自其第一端沿轴向向内地依次设有压圈安装部和镜片安装部。镜片30安装在镜片安装部上。压圈40安装在压圈安装部上，且压圈40在安装状态下压紧镜片30。其中，镜片30与镜片安装部之间设有第一密封机构以用于将镜片30与滤镜框10之间的连接处密封，从而防止空气、微尘等自该连接处进入镜头60。本实施例还可以在滤镜框10的外壁的位于连接装置的内侧的位置上设置可将欲安装的镜头60与滤镜框10之间密封的第二密封机构，以防止空气、微尘等自镜头60与滤镜框10之间的连接处进入镜头60。
可选地，如图4a和图4b所示，第一密封机构可以是第一密封圈20，或是涂抹于镜片30和/或镜片安装部上的密封材料，如胶水或涂料。第二密封机构优选地包括第二密封圈50。优选地，第一密封圈20和第二密封圈50的横截面可以为如图4b所示的圆形、椭圆形或是呈如图5所示的矩形，当然也可以是其它形状，只要能够实现连接处之间的密封即可。
本实施例的滤镜100，通过在镜片30与镜片安装部之间设置第一密封机构，防止了空气、微尘等自镜片30与滤镜框10之间的连接处进入镜头60，有效地防止了镜头60的污损。另外，当本实施例的滤镜100安装在镜头60上时，设置于滤镜框10的外壁上的第二密封机构又有效地防止了空气、微尘等沿镜头60与滤镜框10之间的连接处进入镜头60，进一步为镜头60提供了密封保护。
应当理解的是，本实施例中还可以仅在镜片30与滤镜框10之间设置密封结构，或是仅在镜头60与滤镜框10之间设置密封结构，这均不脱离本发明的保护范围。
为了更好地定位第一密封机构，尤其是当该第一密封机构包括呈圆形、椭圆形横截面的第一密封圈20时有效地定位第一密封机构，优选地，如图4a所示，滤镜框10在镜片安装部的与镜片30相对的第一表面121设有第一凹槽12，第一密封机构安装在第一凹槽12内。优选地，第一表面121为自滤镜框10内壁径向向内延伸并沿轴向支承镜片30的环形表面。第一凹槽12为自第一表面121朝向滤镜框10的第二端轴向延伸的环形凹 槽。当然可以理解的是，第一表面12可以是轴向延伸的表面，其与镜片30的侧壁相对地设置，而第一凹槽12可以为自该轴向延伸的第一表面12径向向内凹陷的环形凹槽，这均不脱离本发明的保护范围。
同样地，为了更好地定位第二密封机构，优选地，滤镜框10的外壁的位于连接装置的内侧的位置上设有第二密封机构安装部，第二密封机构安装部的与欲安装的镜头60相对的第二表面11上设有第二凹槽，第二密封机构安装在第二凹槽内。优选地，第二表面11为沿滤镜框10外壁径向向外延伸的环形表面，而第二凹槽为自该环形的第二表面11朝向滤镜框10的第二端轴向延伸的环形凹槽。当然可以理解的是，第二表面也可以是轴向延伸的表面，其与镜头60的内侧壁相对地设置，而第二凹槽可以为自该轴向延伸的第二表面径向向内凹陷的环形凹槽，这均不脱离本发明的保护范围。
本发明还提供了一种镜头，包括与照相机/摄像机的机身连接的第一端和远离机身的第二端。镜头60的第二端设有连接装置，用来与上述的滤镜100的连接装置相配合，第二密封机构设在镜头60的第二端与滤镜框10之间。
作为一个具体实施例，如图4a和4b所示，镜头包括镜头60和螺纹连接在镜头60外端的滤镜100。其中，该滤镜100包括滤镜框10、镜片30、压圈40、横截面呈圆形或椭圆形的第一密封圈20和第二密封圈50。第二密封圈50装接于滤镜框10的第二表面11处，第一密封圈20装接于滤镜框10的第一凹槽12处。镜片30装入滤镜框10后用压圈40将镜片30锁紧在滤镜框10内。第一密封圈20的如图4a中的位于下端的表面紧贴滤镜框10的第一表面121。第一密封圈20上端面则紧贴镜片30的下表面31，达到密封镜片30与滤镜框10的连接处存在的间隙的目的，防止了空气及微尘等进入到镜片30上端的空间内，从而使镜片30、滤镜框10、压圈40和第一密封圈20形成为一整体，至此滤镜100安装完成。
当将滤镜100安装到镜头60上时，将滤镜框100整体通过其第一端的位于连接装置上的外螺纹13与镜头60的如图4b中的内螺纹62装接锁紧。锁紧后，镜头60上的表面61紧贴第二密封圈50的如图4a中的上端面，第二密封圈50的下端面则紧贴滤镜框10的第二表面11，从而达到密封镜头60与滤镜框10的螺纹连接处的间隙的目的，防止了空气及微尘从滤镜框10的外螺纹处进入镜头60。
作为本发明的其它实施例，如图5所示，第一密封圈20和第二密封圈50可分别呈矩形，如长方形，以呈矩形垫片的形式，这同样能达到密封功能。而且也可以不采用密封圈的形式，第一密封机构也可以是涂抹于镜片30和/或滤镜框10上的胶水或涂料等密封材料，这都能实现密封镜片30与滤镜框10之间的连接处的间隙，防止空气及微尘等进入到镜片30上端面内的空间的功能。
综上所述，本实施例的滤镜100及包括该滤镜的镜头，通过在镜片30与镜片安装部之间设置第一密封机构，防止了空气、微尘等自镜片30与滤镜框10之间的连接处进入镜头60，有效地防止了镜头60污损。另外，当本实施例的滤镜100安装在镜头60上时，设置于滤镜框10的外壁上的第二密封机构又有效地防止了空气、微尘等沿镜头60与滤镜框10之间的连接处进入镜头，进一步为镜头60提供了密封保护。
在不超出本发明的精神和范围的情况下，本领域普通技术人员可以对本发明做出这些和其它的更改与变化，这在后附的权利要求书中做了更具体的阐述。还应当明白，不同实施例的多个方面可以完全或部分地相互替换。此外，本领域普通技术人员将会理解，前面的说明仅仅是示范性的，不会对在后附的权利要求书中进一步描述的本发明内容构成限制。

Claims (10)

  1. 一种滤镜(100)，包括：
    筒状的滤镜框(10)，具有第一端和与该第一端相对的第二端，所述滤镜框(10)的第一端设置有连接装置，所述滤镜框(10)的内壁自其第一端沿轴向向内地依次设有压圈安装部和镜片安装部；
    镜片(30)，安装在所述镜片安装部上；以及
    压圈(40)，安装在所述压圈安装部上，且所述压圈(40)在安装状态下压紧所述镜片(30)，其特征在于，
    所述镜片(30)与所述镜片安装部之间设有第一密封机构和/或在所述滤镜框(10)的外壁上设有第二密封机构。
  2. 根据权利要求1所述的滤镜(100)，其特征在于，所述第一密封机构包括第一密封圈(20)，或是涂抹于所述镜片(30)和/或所述镜片安装部上的密封材料。
  3. 根据权利要求2所述的滤镜(100)，其特征在于，所述密封材料为胶水或涂料。
  4. 根据权利要求1所述的滤镜(100)，其特征在于，所述第二密封机构包括第二密封圈(50)。
  5. 根据权利要求1所述的滤镜(100)，其特征在于，所述滤镜框(10)在所述镜片安装部的与所述镜片(30)相对的第一表面(121)设有第一凹槽(12)，所述第一密封机构安装在所述第一凹槽(12)内。
  6. 根据权利要求5所述的滤镜(100)，其特征在于，所述第一表面(121)为自所述滤镜框(10)内壁径向向内延伸并沿轴向支承所述镜片(30)的环形表面。
  7. 根据权利要求5所述的滤镜(100)，其特征在于，所述第一表面(121)为与所述镜片(30)的外壁相对的轴向延伸的表面，所述第一凹槽(12)为自所述第一表面(121)径向向外凹陷的环形凹槽。
  8. 根据权利要求1至7中任一项所述的滤镜(100)，其特征在于，所述滤镜框(10)的外壁设有第二密封机构安装部，所述第二密封机构安装部的第二表面(11)上设有第二凹槽，所述第二密封机构安装在所述第二凹槽内。
  9. 根据权利要求8所述的滤镜(100)，其特征在于，所述第二表面(11)为沿所述滤镜框(10)外壁径向向外延伸的环形表面。
  10. 一种镜头，包括与照相机/摄像机的机身连接的第一端和远离所述机身的第二端，其特征在于，所述镜头的第二端设有连接装置，用来与根据权利要求1至9中任一项所述的滤镜(100)的连接装置相配合，所述第二密封机构设在所述镜头(60)的第二端与所述滤镜框(10)之间。
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