WO2018196194A1 - 一种投影设备 - Google Patents

一种投影设备 Download PDF

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Publication number
WO2018196194A1
WO2018196194A1 PCT/CN2017/094793 CN2017094793W WO2018196194A1 WO 2018196194 A1 WO2018196194 A1 WO 2018196194A1 CN 2017094793 W CN2017094793 W CN 2017094793W WO 2018196194 A1 WO2018196194 A1 WO 2018196194A1
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WIPO (PCT)
Prior art keywords
lens
lens module
sleeve
disposed
module
Prior art date
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Ceased
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PCT/CN2017/094793
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English (en)
French (fr)
Inventor
杨佳翼
陈红运
欧计敏
李屹
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Shenzhen Appotronics Corp Ltd
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Appotronics Corp Ltd
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Publication of WO2018196194A1 publication Critical patent/WO2018196194A1/zh
Anticipated expiration legal-status Critical
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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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details

Definitions

  • the utility model relates to the field of projection display technology, and more particularly to a projection device.
  • a projection device is a device that can project images or video onto a screen or wall, and has many advantages such as high brightness and wide color gamut.
  • FIG. 1 it is a schematic structural diagram of a conventional projection apparatus, wherein the projection apparatus generally includes a housing 1 , a lens sleeve 2 communicating with the housing 1 , and a lens disposed in the lens sleeve 2 .
  • the module 3; and the lens module 3 cooperate with devices such as the light source device 4, the light modulation system 5, and the optical system 6 provided in the casing 1 to achieve the purpose of projecting images or videos.
  • the present invention provides a projection apparatus, which is provided with a dustproof structure between the lens module and the lens sleeve to prevent dust from entering the inside of the housing, and the optical components inside the housing are not protected. Pollution.
  • a projection device comprising:
  • a lens sleeve coupled to the housing
  • a lens module disposed in the lens sleeve, wherein a dustproof structure is disposed between the lens sleeve and the lens module.
  • the dustproof structure is disposed between the lens sleeve and the lens module, and is adjacent to one end of the light emitting surface of the lens module.
  • the dustproof structure comprises: a track surrounding the lens module;
  • a plurality of spheres disposed along the track, and the plurality of spheres form a dustproof retaining wall between the lens sleeve and the lens module;
  • the track is formed on an inner wall of the lens sleeve; or the track is formed on the lens module.
  • two adjacent balls are in contact with each other.
  • the sphere is an elastic sphere or a rigid sphere.
  • the dustproof structure includes: a groove surrounding the lens module;
  • the groove is formed on an inner wall of the lens sleeve, and the baffle is formed on the lens module; or the groove is formed on the lens module, and the baffle is formed On the inner wall of the lens sleeve.
  • a width of the groove is greater than a width of the baffle.
  • the dustproof structure comprises: a sealing oil disposed between the lens sleeve and the lens module and disposed around the lens module.
  • the sealing oil is a solid oil or a liquid oil.
  • the dustproof structure includes: a first structure surrounding the lens module and formed on the lens module, the first structure including a protrusion and/or a recess;
  • the dustproof structure comprises: a thread structure surrounding the lens module and formed on the inner wall of the lens sleeve and the lens module.
  • the technical solution provided by the present invention has at least the following advantages:
  • the utility model provides a projection device, comprising: a housing; a lens sleeve connected to the housing; and a lens module disposed in the lens sleeve, wherein the lens sleeve and the lens sleeve A dustproof structure is disposed between the lens modules.
  • the technical solution provided by the utility model provides a dustproof structure between the lens module and the lens sleeve to prevent dust from entering the inside of the casing, and protects the optical components inside the casing from being contaminated.
  • FIG. 1 is a schematic structural view of a conventional projection apparatus
  • FIG. 2 is a schematic structural diagram of a projection device according to an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of a lens module and a lens sleeve according to an embodiment of the present application
  • Figure 3b is a cross-sectional view taken along line AA' of Figure 3a;
  • FIG. 4 is a schematic structural diagram of another lens module and a lens sleeve according to an embodiment of the present application.
  • Figure 4b is a cross-sectional view taken along line AA' of Figure 4a;
  • FIG. 5 is a schematic structural diagram of another lens module and a lens sleeve according to an embodiment of the present application.
  • Figure 5b is a cross-sectional view taken along line AA' of Figure 5a;
  • FIG. 6 is a schematic structural diagram of another lens module and a lens sleeve according to an embodiment of the present application.
  • Figure 6b is a cross-sectional view taken along line AA' of Figure 6a;
  • FIG. 7 is a schematic structural diagram of still another lens module and a lens sleeve according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of another lens module and a lens sleeve according to an embodiment of the present application.
  • Figure 8b is a cross-sectional view taken along line AA' of Figure 8a;
  • FIG. 9 is a schematic structural diagram of still another lens module and a lens sleeve according to an embodiment of the present application.
  • a projection apparatus generally includes a housing, a lens sleeve that communicates with the housing, and a lens module disposed in the lens sleeve; and the lens module passes through a light source device disposed in the housing,
  • the light modulation system and the optical system and the like cooperate with each other to achieve the purpose of projecting images or videos.
  • the lens sleeve since there is a gap between the lens module and the lens sleeve, and the lens sleeve is in communication with the connection end of the housing, external dust easily enters the interior of the housing through the gap, thereby contaminating the optical disposed inside the housing. element.
  • the embodiment of the present application provides a projection device.
  • the dustproof structure is disposed between the lens module and the lens sleeve to prevent dust from entering the interior of the housing, and the optical components inside the housing are not protected. Pollution.
  • FIG. 2 is a schematic structural diagram of a projection apparatus according to an embodiment of the present disclosure, where the projection apparatus includes:
  • a lens sleeve 200 coupled to the housing 100;
  • a lens module 300 disposed in the lens sleeve 100, wherein a dustproof structure 400 is disposed between the lens sleeve 200 and the lens module 300.
  • the housing 100 further includes a light source device, a light modulation system, a light machine system, and the like.
  • the optical components cooperate with the lens module 300 to complete the purpose of projecting images or videos.
  • the light source device is for emitting a light source
  • the light modulation system is for modulating the light source according to the image data to form image light
  • the optomechanical system is for optically processing the image light (such as homogenizing, shaping, focusing, etc.), and the image light is
  • the method is directed to the lens module 300 to project image light onto the screen through the lens module 300 to form a corresponding image; the working principle is the same as the prior art, and thus the present application does not redundantly describe the same.
  • the technical solution provided by the embodiment of the present application provides a dustproof structure between the lens module and the lens sleeve to prevent dust from entering the inside of the casing, and protects the optical components inside the casing from being contaminated.
  • the dustproof structure is disposed between the lens sleeve and the lens module, adjacent to one end of the light emitting surface of the lens module, wherein the dustproof structure is disposed on the lens cover The tube is away from the side of the housing to block the dust at the end.
  • This application is not specifically limited.
  • the dustproof structure can also be disposed in any area between the lens module and the lens sleeve, and needs to be specific according to the actual application. design.
  • FIG. 3a is a schematic structural view of a lens module and a lens sleeve according to an embodiment of the present application
  • FIG. 3b is a cross-sectional view taken along line AA' of FIG. 3a.
  • the dustproof structure includes: a track 411 surrounding the lens module 300;
  • a plurality of spheres 412 disposed along the track 411, and the plurality of spheres 412 form a dust barrier between the lens sleeve 200 and the lens module 300.
  • two adjacent balls 412 are in contact with each other to form a dustproof retaining wall.
  • the lens module 300 can ensure the expansion and contraction of the lens module 200 by the presence of the spherical body 412 in the track 411, and the zoom lens module 300 can achieve focusing. purpose.
  • a dustproof wall can be formed to block dust from entering the inside of the casing to achieve dustproof purposes.
  • the sphere provided in the embodiment of the present application may be an elastic sphere or a rigid sphere, wherein the rigid sphere may be a steel ball.
  • the rail 411 may be formed on an inner wall of the lens barrel 300. or,
  • FIG. 4a is a schematic structural view of another lens module and a lens sleeve according to an embodiment of the present application
  • FIG. 4b is a cross-sectional view taken along line AA' of FIG. 4a, wherein The track 411 can also be formed on the lens module 300.
  • the lubricating oil can be disposed in the rail 411, which not only makes the relative movement between the lens module 300 and the lens sleeve 200 more convenient, but also can further block external dust.
  • FIG. 5a is a schematic structural view of another lens module and a lens sleeve according to an embodiment of the present application
  • FIG. 5b is a cross-sectional view taken along line AA' of FIG. 5a.
  • the dustproof structure includes: a groove 421 surrounding the lens module 300;
  • baffle 422 surrounding the lens module 300 and matching the groove 421.
  • the top end of the baffle 422 is in contact with the bottom of the recess 421 to block the dust from entering the inside of the housing 100 as a dustproof retaining wall for dust prevention purposes.
  • the material of the baffle 422 is not specifically limited.
  • the groove 421 may be formed on an inner wall of the lens sleeve 300, and the baffle 422 is formed on the lens module 300. or,
  • FIG. 6a is a schematic structural view of another lens module and a lens sleeve according to an embodiment of the present application
  • FIG. 6b is a cross-sectional view taken along line AA' of FIG. 6a, wherein The groove 421 is formed on the lens module 300, and the baffle 422 is formed on an inner wall of the lens barrel 200.
  • the width d1 of the groove 421 is greater than the width of the baffle 422 in the light-emitting direction of the lens module 300. D2, the purpose of focusing is achieved by achieving relative movement between the lens module 300 and the lens sleeve 200. It should be noted that, the embodiment of the present application does not limit the specific width data of the groove 421 and the baffle 422, and needs to be specifically designed according to actual applications.
  • FIG. 7 a schematic structural diagram between a lens module and a lens sleeve according to an embodiment of the present disclosure, wherein the dustproof structure includes: the lens sleeve 200 and the lens Sealing oil 430 disposed between the modules 300 and surrounding the lens module 300.
  • the seal oil 430 provided in the embodiment of the present application may be a solid oil or a liquid oil, wherein the seal oil 430 blocks external dust from entering the inside of the casing 100 to achieve dustproof purposes.
  • FIG. 8a is a schematic structural view of another lens module and a lens sleeve according to an embodiment of the present application
  • FIG. 8b is a cross-sectional view taken along line AA' of FIG. 8a
  • the dustproof structure includes: a first structure 441 surrounding the lens module 300 and formed on the lens module 300, the first structure including protrusions and/or recesses;
  • a second structure 442 formed on an inner wall of the lens barrel 200 and matching the first structure 441.
  • the lens module 300 and the lens sleeve 200 are formed with an uneven surface corresponding to the dust-proof structure, thereby forming a dustproof structure to block external dust from entering the interior of the casing.
  • the uneven surface may be regular or irregular, and the present application does not specifically limit the present application.
  • FIG. 9 a schematic structural diagram between a lens module and a lens sleeve according to an embodiment of the present disclosure, wherein the dustproof structure includes: surrounding the lens module 300 and formed in the The inner wall of the lens barrel 200 and the threaded structure 450 on the lens module 300 are matched to each other.
  • the dustproof structure may also be in other styles, which is not specifically limited in this application.
  • the structure of the groove, the baffle, the track, and the like formed on the lens module and the lens sleeve can be integrally formed with the lens module and the lens sleeve, and the present application also does not specifically limit.
  • An embodiment of the present application provides a projection apparatus including: a housing; a lens sleeve connected to the housing; and a lens module disposed in the lens sleeve, wherein the lens sleeve and the lens sleeve A dustproof structure is disposed between the lens modules.
  • the technical solution provided by the embodiment of the present application provides a dustproof structure between the lens module and the lens sleeve to prevent dust from entering the inside of the casing, and protects the optical components inside the casing from being contaminated.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Lens Barrels (AREA)
  • Projection Apparatus (AREA)

Abstract

一种投影设备，包括：壳体（100）；与壳体（100）连接的镜头套筒（200）；以及，设置于镜头套筒（200）内的镜头模组（300），其中，镜头套筒（200）与镜头模组（300）之间设置有防尘结构（400），从而阻隔灰尘进入壳体（100）内部。

Description

一种投影设备 技术领域
本实用新型涉及投影显示技术领域，更为具体的说，涉及一种投影设备。
 背景技术
投影设备是一种可以将图像或视频投射到幕布或墙面上的设备，其具有亮度高、色域范围广等诸多优点。
技术问题
随着经济发展和科学技术的进步，投影设备已被广泛应用于各个领域。参考图1所示，为现有的一种投影设备的结构示意图，其中，投影设备一般包括壳体1，与壳体1相连通的镜头套筒2，及设置于镜头套筒2内的镜头模组3；以及，镜头模组3通过与设置于壳体1内的光源装置4、光调制系统5和光机系统6等设备相互配合，达到投射图像或视频的目的。但是，由于镜头模组3和镜头套筒2之间存在缝隙，且镜头套筒2与壳体1的连接端相通，因而，外界灰尘容易通过该缝隙进入壳体1的内部，从而污染设置于壳体1内部的光学元件。
 技术解决方案
有鉴于此，本实用新型提供了一种投影设备，通过在镜头模组和镜头套筒之间设置防尘结构，以达到阻隔灰尘进入壳体内部的目的，保护壳体内部的光学元件不被污染。
为实现上述目的，本实用新型提供的技术方案如下：
一种投影设备，包括：
壳体；
与所述壳体连接的镜头套筒；
以及，设置于所述镜头套筒内的镜头模组，其中，所述镜头套筒与所述镜头模组之间设置有防尘结构。
可选的，所述防尘结构设置于所述镜头套筒与所述镜头模组之间，靠近所述镜头模组出光面的一端。
可选的，所述防尘结构包括：环绕所述镜头模组的轨道；
以及，沿所述轨道设置的多个球体，且所述多个球体在所述镜头套筒与所述镜头模组之间形成防尘挡墙；
其中，所述轨道形成在所述镜头套筒的内壁；或者所述轨道形成在所述镜头模组上。
可选的，相邻两个所述球体之间相互接触。
可选的，所述球体为弹性球体或刚性球体。
可选的，所述防尘结构包括：环绕所述镜头模组的凹槽；
以及，环绕所述镜头模组、且与所述凹槽匹配的挡板；
其中，所述凹槽形成在所述镜头套筒的内壁，及所述挡板形成在所述镜头模组上；或者所述凹槽形成在所述镜头模组上，及所述挡板形成在所述镜头套筒的内壁。
可选的，在所述镜头模组的出光方向上，所述凹槽的宽度大于所述挡板的宽度。
可选的，所述防尘结构包括：设置于所述镜头套筒与所述镜头模组之间、且环绕所述镜头模组设置的密封油。
可选的，所述密封油为固态油或液态油。
可选的，所述防尘结构包括：环绕所述镜头模组、且形成在所述镜头模组上的第一结构，所述第一结构包括凸起和/或凹陷；
以及，形成在所述镜头套筒的内壁、且与所述第一结构匹配的第二结构。
可选的，所述防尘结构包括：环绕所述镜头模组、且形成在所述镜头套筒的内壁和镜头模组上相互匹配的螺纹结构。
 有益效果
相较于现有技术，本实用新型提供的技术方案至少具有以下优点：
本实用新型提供了一种投影设备，包括：壳体；与所述壳体连接的镜头套筒；以及，设置于所述镜头套筒内的镜头模组，其中，所述镜头套筒与所述镜头模组之间设置有防尘结构。本实用新型提供的技术方案，通过在镜头模组和镜头套筒之间设置防尘结构，以达到阻隔灰尘进入壳体内部的目的，保护壳体内部的光学元件不被污染。
 附图说明
为了更清楚地说明本实用新型实施例或现有技术中的技术方案，下面将对实施例或现有技术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，还可以根据提供的附图获得其他的附图。
图1为现有的一种投影设备的结构示意图；
图2为本申请实施例提供的一种投影设备的结构示意图；
图3a为本申请实施例提供的一种镜头模组和镜头套筒之间的结构示意图；
图3b为图3a中沿AA’方向的切面图；
图4a为本申请实施例提供的另一种镜头模组和镜头套筒之间的结构示意图；
图4b为图4a中沿AA’方向的切面图；
图5a为本申请实施例提供的又一种镜头模组和镜头套筒之间的结构示意图；
图5b为图5a中沿AA’方向的切面图；
图6a为本申请实施例提供的又一种镜头模组和镜头套筒之间的结构示意图；
图6b为图6a中沿AA’方向的切面图；
图7为本申请实施例提供的又一种镜头模组和镜头套筒之间的结构示意图；
图8a为本申请实施例提供的又一种镜头模组和镜头套筒之间的结构示意图；
图8b为图8a中沿AA’方向的切面图；
图9为本申请实施例提供的又一种镜头模组和镜头套筒之间的结构示意图。
 本发明的最佳实施方式
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，所描述的实施例仅仅是本实用新型一部分实施例，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他实施例，都属于本实用新型保护的范围。
正如背景技术所述，投影设备一般包括壳体，与壳体相连通的镜头套筒，及设置于镜头套筒内的镜头模组；以及，镜头模组通过与设置于壳体内的光源装置、光调制系统和光机系统等设备相互配合，达到投射图像或视频的目的。但是，由于镜头模组和镜头套筒之间存在缝隙，且镜头套筒与壳体的连接端相通，因而，外界灰尘容易通过该缝隙进入壳体的内部，从而污染设置于壳体内部的光学元件。
基于此，本申请实施例提供了一种投影设备，通过在镜头模组和镜头套筒之间设置防尘结构，以达到阻隔灰尘进入壳体内部的目的，保护壳体内部的光学元件不被污染。为实现上述目的，本申请实施例提供的技术方案如下，具体结合图2至图9所示，对本申请实施例提供的技术方案进行详细的描述。
参考图2所示，为本申请实施例提供的一种投影设备的结构示意图，其中，投影设备包括：
壳体100；
与所述壳体100连接的镜头套筒200；
以及，设置于所述镜头套筒100内的镜头模组300，其中，所述镜头套筒200与所述镜头模组300之间设置有防尘结构400。
在本申请一实施例中，设置于壳体100内还包括有光源装置、光调制系统和光机系统等，这些光学元件与镜头模组300配合完成投影图像或视频的目的。其中，光源装置用于发射光源；光调制系统用于根据图像数据调制光源，形成图像光；光机系统用于将图像光进行光学处理（如匀光、整形、聚焦等），并将图像光引导至镜头模组300，以通过镜头模组300将图像光投影至屏幕形成相应图像；对此工作原理与现有技术相同，故本申请不做多余赘述。
本申请实施例提供的技术方案，通过在镜头模组和镜头套筒之间设置防尘结构，以达到阻隔灰尘进入壳体内部的目的，保护壳体内部的光学元件不被污染。在本申请一实施例中，所述防尘结构设置于所述镜头套筒与所述镜头模组之间，靠近所述镜头模组出光面的一端，其中，将防尘结构设置于镜头套筒背离壳体的一侧，以在端部将灰尘阻隔，对此本申请不做具体限制，防尘结构还可以设置于镜头模组和镜头套筒之间任意区域，需要根据实际应用进行具体设计。
下面结合附图对本申请实施例提供的几个具体防尘结构进行详细描述。
结合图3a和图3b所示，图3a为本申请实施例提供的一种镜头模组和镜头套筒之间的结构示意图，图3b为图3a中沿AA’方向的切面图。其中，所述防尘结构包括：环绕所述镜头模组300的轨道411；
以及，沿所述轨道411设置的多个球体412，且所述多个球体412在所述镜头套筒200与所述镜头模组300之间形成防尘挡墙。其中，在本申请实施例中，相邻两个所述球体412之间相互接触，以形成防尘挡墙。
结合图3a和3b所示的防尘结构，由于轨道411中设置有球体412的存在，能够保证镜头模组300实现在镜头套筒200中伸缩的动作，通过伸缩镜头模组300达到调焦的目的。此外，由于多个球体412环绕镜头模组300一圈设置，能够形成一防尘挡墙以阻隔灰尘进入壳体内部，达到防尘的目的。本申请实施例中提供的所述球体可以为弹性球体或刚性球体，其中，刚性球体可以为钢球。
在本申请一实施例中，参考图3a和图3b所示，所述轨道411可以形成在所述镜头套筒300的内壁。或者，
结合图4a和图4b所示，图4a为本申请实施例提供的另一种镜头模组和镜头套筒之间的结构示意图，图4b为图4a中沿AA’方向的切面图，其中，所述轨道411还可以形成在所述镜头模组300上。
进一步的，在本申请实施例中，可以在轨道411中设置有润滑油，不仅能够使得镜头模组300和镜头套筒200之间相对移动更加便捷，还能够进一步阻挡外界灰尘。
结合图5a和图5b所示，图5a为本申请实施例提供的又一种镜头模组和镜头套筒之间的结构示意图，图5b为图5a中沿AA’方向的切面图。其中，所述防尘结构包括：环绕所述镜头模组300的凹槽421；
以及，环绕所述镜头模组300、且与所述凹槽421匹配的挡板422。
结合图5a和5b所示的防尘结构，其中，挡板422的顶端与凹槽421的底部接触，以作为防尘挡墙阻挡外界灰尘进入壳体100的内部，达到防尘的目的。在本申请实施例中，对于挡板422的材质不做具体限制。
在本申请一实施例中，参考图5a和图5b所示，所述凹槽421可以形成在所述镜头套筒300的内壁，及所述挡板422形成在所述镜头模组300上。或者，
结合图6a和图6b所示，图6a为本申请实施例提供的又一种镜头模组和镜头套筒之间的结构示意图，图6b为图6a中沿AA’方向的切面图，其中，所述凹槽421形成在所述镜头模组300上，及所述挡板422形成在所述镜头套筒200的内壁。
进一步的，结合图6a至图6b所示，本申请实施例提供的防尘结构，在所述镜头模组300的出光方向上，所述凹槽421的宽度d1大于所述挡板422的宽度d2，以达到镜头模组300和镜头套筒200之间相对移动而进行调焦的目的。需要说明的是，本申请实施例对于凹槽421和挡板422的具体宽度数据不做限制，需要根据实际应用进行具体设计。
参考图7所示，为本申请实施例提供的又一种镜头模组和镜头套筒之间的结构示意图，其中，所述防尘结构包括：设置于所述镜头套筒200与所述镜头模组300之间、且环绕所述镜头模组300设置的密封油430。
本申请实施例提供的所述密封油430可以为固态油或液态油，其中，通过密封油430阻挡外界灰尘进入壳体100内部，达到防尘目的。
结合图8a和图8b所示，图8a为本申请实施例提供的又一种镜头模组和镜头套筒之间的结构示意图，图8b为图8a中沿AA’方向的切面图，其中，所述防尘结构包括：环绕所述镜头模组300、且形成在所述镜头模组300上的第一结构441，所述第一结构包括凸起和/或凹陷；
以及，形成在所述镜头套筒200的内壁、且与所述第一结构441匹配的第二结构442。
结合图8a画和图8b所示的防尘结构，将镜头模组300和镜头套筒200对应防尘结构的区域形成凹凸不平的表面，以此形成防尘结构阻挡外界灰尘进入壳体内部，达到防尘目的。在本申请实施例中，凹凸不平的表面可以是规则的，也可以是不规则的，对此本申请不做具体限制。
参考图9所示，为本申请实施例提供的又一种镜头模组和镜头套筒之间的结构示意图，其中，所述防尘结构包括：环绕所述镜头模组300、且形成在所述镜头套筒200的内壁和镜头模组300上相互匹配的螺纹结构450。
需要说明的是，上述几种具体实施例只是本申请所有可实施方式中具体几种，在本申请其他实施例中，防尘结构还可以为其他样式，对此本申请不做具体限制。此外，在本申请实施例中，形成在镜头模组、镜头套筒上的凹槽、挡板、轨道等结构，可以与镜头模组和镜头套筒一体成型，对此本申请同样不做具体限制。
本申请实施例提供了一种投影设备，包括：壳体；与所述壳体连接的镜头套筒；以及，设置于所述镜头套筒内的镜头模组，其中，所述镜头套筒与所述镜头模组之间设置有防尘结构。本申请实施例提供的技术方案，通过在镜头模组和镜头套筒之间设置防尘结构，以达到阻隔灰尘进入壳体内部的目的，保护壳体内部的光学元件不被污染。
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本实用新型。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本实用新型的精神或范围的情况下，在其它实施例中实现。因此，本实用新型将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (11)

1、一种投影设备，其特征在于，包括：
壳体；
与所述壳体连接的镜头套筒；
以及，设置于所述镜头套筒内的镜头模组，其中，所述镜头套筒与所述镜头模组之间设置有防尘结构。
2、根据权利要求1所述的投影设备，其特征在于，所述防尘结构设置于所述镜头套筒与所述镜头模组之间，靠近所述镜头模组出光面的一端。
3、根据权利要求1所述的投影设备，其特征在于，所述防尘结构包括：环绕所述镜头模组的轨道；
以及，沿所述轨道设置的多个球体，且所述多个球体在所述镜头套筒与所述镜头模组之间形成防尘挡墙；
其中，所述轨道形成在所述镜头套筒的内壁；或者所述轨道形成在所述镜头模组上。
4、根据权利要求3所述的投影设备，其特征在于，相邻两个所述球体之间相互接触。
5、根据权利要求3所述的投影设备，其特征在于，所述球体为弹性球体或刚性球体。
6、根据权利要求1所述的投影设备，其特征在于，所述防尘结构包括：环绕所述镜头模组的凹槽；
以及，环绕所述镜头模组、且与所述凹槽匹配的挡板；
其中，所述凹槽形成在所述镜头套筒的内壁，及所述挡板形成在所述镜头模组上；或者所述凹槽形成在所述镜头模组上，及所述挡板形成在所述镜头套筒的内壁。
7、根据权利要求6所述的投影设备，其特征在于，在所述镜头模组的出光方向上，所述凹槽的宽度大于所述挡板的宽度。
8、根据权利要求1所述的投影设备，其特征在于，所述防尘结构包括：设置于所述镜头套筒与所述镜头模组之间、且环绕所述镜头模组设置的密封油。
9、根据权利要求8所述的投影设备，其特征在于，所述密封油为固态油或液态油。
10、根据权利要求1所述的投影设备，其特征在于，所述防尘结构包括：环绕所述镜头模组、且形成在所述镜头模组上的第一结构，所述第一结构包括凸起和/或凹陷；
以及，形成在所述镜头套筒的内壁、且与所述第一结构匹配的第二结构。
11、根据权利要求1所述的投影设备，其特征在于，所述防尘结构包括：环绕所述镜头模组、且形成在所述镜头套筒的内壁和镜头模组上相互匹配的螺纹结构。
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