WO2023226140A1 - 光机的棱镜固定结构及投影光机 - Google Patents

光机的棱镜固定结构及投影光机 Download PDF

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Publication number
WO2023226140A1
WO2023226140A1 PCT/CN2022/101514 CN2022101514W WO2023226140A1 WO 2023226140 A1 WO2023226140 A1 WO 2023226140A1 CN 2022101514 W CN2022101514 W CN 2022101514W WO 2023226140 A1 WO2023226140 A1 WO 2023226140A1
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WIPO (PCT)
Prior art keywords
prism
fixing structure
glue
optical machine
prism fixing
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PCT/CN2022/101514
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English (en)
French (fr)
Inventor
张强
崔荣鹏
高文刚
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歌尔光学科技有限公司
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Publication of WO2023226140A1 publication Critical patent/WO2023226140A1/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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
    • G02B7/1805—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for prisms
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
    • G02B7/181—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors with means for compensating for changes in temperature or for controlling the temperature; thermal stabilisation

Definitions

  • the present invention relates to the technical field of projection light machines, and in particular to a prism fixing structure of the light machine and a projection light machine.
  • the main purpose of the present invention is to provide a prism fixing structure of an optical machine and a projection optical machine, aiming to solve the technical problem of virtual focus caused by the projection optical machine in the prior art.
  • the present invention provides a prism fixing structure for an optical machine, which includes a body and a prism.
  • the body is provided with a slot, a supporting surface and a baffle.
  • the prism includes a head and a tail.
  • the first side, the second side and the hypotenuse are connected, a glue point is provided between the first side and the supporting surface, the hypotenuse is arranged in close contact with the baffle, and the The bevel end formed by the second side and the bevel is clamped in the slot.
  • the baffle includes a horizontal plate and a vertical plate connected to each other, the horizontal plate is connected to the body, and the vertical plate is parallel to the hypotenuse and arranged closely.
  • the body is provided with a boss, the boss is in contact with the bottom surface of the prism, and the thickness of the transverse plate is the same as the height of the boss.
  • the supporting surface is arranged parallel to the first side, and the supporting surface is arranged in close contact with the first side except for the position of the glue point.
  • the supporting surface includes at least two sub-supporting surfaces arranged at intervals, and the glue dots are provided on each of the sub-supporting surfaces.
  • the number of the glue dots is at least two, and the heights of at least two of the glue dots are the same.
  • the width of the card slot gradually expands from the bottom of the card slot to the card slot opening, and one side of the card slot is parallel to and partially aligned with the second side.
  • the baffle is integrally formed with the body.
  • the prism is a right-angled triangular prism, and the first side and the second side are perpendicular to each other.
  • the thickness of the glue dots is 0.9 mm to 1.1 mm.
  • the present invention also provides a projection light machine, which includes the above-mentioned prism fixing structure of the light machine.
  • the prism fixing structure of the optical machine includes a body and a prism.
  • the body is provided with a slot, a supporting surface and a baffle.
  • the prism includes a first side, a second side and a hypotenuse connected end to end.
  • the first A glue point is provided between the side and the supporting surface, the bevel is arranged in close contact with the baffle, and the bevel end formed by the second side and the bevel is clamped in the slot.
  • dispensing glue is placed on the supporting surface between the prism and the optical machine body, and a baffle is designed on the hypotenuse of the prism.
  • the prism will be pushed forward.
  • the baffle When the baffle is not designed, the prism will move in the direction of the force F; and after the baffle is added, the prism pre-moves and the baffle generates a supporting force Fn and a static friction force F f on the prism. And because the force exerted by the expansion of the glue dots on the prism is relatively small, the supporting force Fn and static friction force F f produced by the baffle on the prism are enough to balance the force exerted by the glue dots on the prism, so the prism can remain relatively stationary and will not shift.
  • Figure 1 is a top view of the prism fixing structure of the optical machine according to the embodiment of the present invention.
  • Figure 2 is an enlarged view of Figure 1 at A;
  • Figure 3 is a schematic three-dimensional structural diagram of the prism fixing structure of the optical machine according to the embodiment of the present invention.
  • Figure 4 is a partial structural schematic diagram of the prism fixing structure of the optical machine according to the embodiment of the present invention (with the prism removed);
  • Figure 5 is a schematic three-dimensional structural diagram of the baffle according to the embodiment of the present invention.
  • Figure 6 is a force analysis diagram of the prism and baffle according to the embodiment of the present invention.
  • the present invention provides a prism fixing structure for an optical machine, which includes a body 1 and a prism 2.
  • the body 1 is provided with a slot 3, a supporting surface 7 and a baffle 5.
  • the prism 2 includes a first side 21, a second side 22 and a hypotenuse 23 connected end to end, a glue point 4 is provided between the first side 21 and the supporting surface 7, the hypotenuse 23 is attached to the baffle 5
  • the bevel end 24 formed by the second side 22 and the bevel 23 is engaged in the slot 3 .
  • the traditional glue dispensing method is to open three holes in the optical machine body 1 at the bottom of the prism 2 and perform pour-in glue injection.
  • the temperature in the optical machine cavity and the optical machine body 1 rises, causing the glue dots 4 to expand due to heat, and the expansion exerts a force on the prism 2 .
  • the degree of expansion is positively related to the temperature, that is, the force generated by the glue dots 4 on the prism 2 is positively related to the temperature.
  • the uneven force on the prism 2 may easily cause the prism 2 to shift to varying degrees at different positions, resulting in a virtual focus phenomenon.
  • the prism 2 When the baffle 5 is not designed, the prism 2 will move in the direction of the force F; and after the baffle 5 is added, the prism 2 pre-moves and the baffle 5 generates a supporting force Fn and a static friction force F f on the prism 2 . And because the force produced by the expansion of glue dot 4 on prism 2 is relatively small, the support force Fn and static friction force F f produced by baffle 5 on prism 2 are enough to balance the force of glue dot 4 on prism 2, and the three satisfy the force balance condition. ,Right now:
  • the prism 2 can remain relatively stationary and will not shift.
  • This embodiment changes the dispensing position and adds a baffle 5 at the hypotenuse 23 of the prism 2 to ensure that the prism 2 will not shift due to the thermal expansion of the glue dot 4 when the optical machine is used for a long time, effectively effectively The occurrence of virtual focus is avoided.
  • the prism 2 is a right-angled triangular prism, and the first side 21 and the second side 22 are perpendicular to each other.
  • Prism 2 is an important optical element for optical-mechanical imaging. It is used to change the propagation direction of light so that the reflected light propagates along a fixed position during lens transmission.
  • the glue dot 4 is arranged on the first side 21, firstly because there is no supporting surface 7 on the second side 22, and there is a gap between the body 1 and the prism 2 at the second side 22, and the temperature is high. Dispensing glue here can easily cause the glue dots 4 to expand too much, pushing the prism 2 to rotate and causing the glue dots 4 to age.
  • the baffle 5 includes interconnected horizontal plates 51 and vertical plates 52.
  • the horizontal plates 51 are connected to the body 1, and the vertical plates 52 are parallel to and fit with the hypotenuse 23. set up.
  • the horizontal plate 51 and the vertical plate 52 can be connected vertically.
  • the horizontal plate 61 is used to connect with the body 1.
  • the vertical plate 52 is parallel to the hypotenuse 23 and arranged in close contact with each other to provide effective fixation to the hypotenuse 23.
  • multiple baffles 5 can be designed here.
  • the multiple baffles 5 are spaced apart along the extension direction of the hypotenuse 23.
  • the plurality of vertical plates 52 are attached to the hypotenuse 23 to offset the thermal expansion of the glue dots. 4 pairs of prisms
  • the force of 2 ensures that the prism 2 is fixed without deflection and avoids the occurrence of virtual focus.
  • the body 1 is provided with a boss 6 , the boss 6 is in contact with the bottom surface of the prism 2 , and the thickness of the transverse plate 51 is the same as the height of the boss 6 .
  • the boss 6 is used for positioning and supporting.
  • the thickness of the horizontal plate 51 is the same as the height of the boss 6 to ensure that the prism 2 is at the same level; and the height of the vertical plate 52 is lower than the lower edge of the effective light area of the prism 2. It fixes the prism 2 while avoiding light shading.
  • the supporting surface 7 is arranged parallel to the first side 21 . Except for the position of the glue point 4 , the supporting surface 7 is arranged in close contact with the first side 21 .
  • the supporting surface 7 here is a whole plane, and the supporting surface 7 is parallel to the first side 21 and arranged in close contact to position the prism 2 .
  • the supporting surface 7 includes at least two sub-supporting surfaces arranged at intervals, and each sub-supporting surface is provided with glue dots 4 .
  • the supporting surface 7 is the side positioning surface of the prism 2 to ensure a certain distance between the prism 2 and the DMD.
  • the number of glue dots 4 is at least two, and the heights of at least two glue dots 4 are the same.
  • the height of the glue dots 4 is the same, which means that the glue dots 4 are all at the same level, so that the prism 2 will not tilt due to uneven force in the vertical direction (height direction of the prism 2).
  • the horizontal plate 51 can be connected to one of the sub-supporting surfaces, which makes it easier to support the prism 2.
  • the width of the card slot 3 gradually expands from the bottom of the card slot 3 to the opening of the card slot 3, and one side 31 of the card slot 3 is parallel to and partially in contact with the second side 22.
  • the slot 3 is used to fix the prism 2, and there is a small gap with the bevel end 24 of the prism 2 to facilitate installation.
  • one side 31 of the slot 3 fits the second side 22 of the prism 2 to ensure that the prism 2 does not Movement will occur.
  • the fit mentioned here only overlaps one side 31 of the slot 3 with the portion of the second side 22 located at the bevel end 24 , rather than fitting the one side 31 of the slot 3 with the entire second side 22 .
  • the baffle 5 is integrally formed with the body 1 .
  • the baffle 5 is made of the same material as the body 1, and is made by one-piece molding to be stronger and more convenient to make.
  • the thickness of the glue dot 4 is 0.9 mm to 1.1 mm.
  • the thickness of the glue dot is defined according to the amount of glue. More specifically, it may be 1.0 mm.
  • the present invention also provides a projection light machine, which includes the above-mentioned prism fixing structure of the light machine. Since the projection light machine includes all the technical solutions of all the embodiments of the prism fixing structure of the light machine, it has at least all the beneficial effects brought by all the above technical solutions, which will not be described again here.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mounting And Adjusting Of Optical Elements (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

本发明提供一种光机的棱镜固定结构及投影光机，光机的棱镜固定结构包括本体和棱镜，本体上设置有卡槽、承靠面和挡板，棱镜包括首尾相接的第一侧边、第二侧边和斜边，第一侧边与承靠面之间设置有胶点，斜边与挡板贴合设置，第二侧边与斜边形成的斜角端卡接于卡槽内。通过改变点胶位置，在棱镜与光机本体之间的承靠面进行点胶，并且在棱镜的斜边设计挡板，当光机点亮后，由于温度的上升，胶点受热膨胀对棱镜产生力的作用，而挡板对棱镜产生支持力和静摩擦力足够平衡胶点对棱镜的作用力，故棱镜能够保持相对静止，不会发生偏移。该光机的棱镜固定结构不会因为胶点发热膨胀而位置发生偏移，有效地避免了虚焦现象的产生。

Description

光机的棱镜固定结构及投影光机 技术领域
本发明涉及投影光机技术领域，尤其涉及一种光机的棱镜固定结构及投影光机。
背景技术
随着微型投影仪技术的发展，家用投影光机越来越多的进入了人们的视野。但投影光机随着点亮时间的延长将出现不可避免的问题－虚焦，一个可以衡量投影质量的重要参数。具体地，因为长时间的工作使投影光机内部温度急剧上升，固定胶点产生热膨胀使棱镜偏移原有位置，从而产生投影画面虚焦。所以，保证棱镜固定在原有位置，减少位置偏移是改善热虚焦重要策略。通过实验验证，光机内棱镜位置是最为重要的因素，固定好棱镜可以有效减少热虚焦。
鉴于此，有必要提供一种新型的光机的棱镜固定结构及投影光机，以解决或至少缓解上述技术缺陷。
发明内容
本发明的主要目的是提供一种光机的棱镜固定结构及投影光机，旨在解决现有技术中投影光机产生虚焦的技术问题。
为实现上述目的，根据本发明的一个方面，本发明提供一种光机的棱镜固定结构，包括本体和棱镜，所述本体上设置有卡槽、承靠面和挡板，所述棱镜包括首尾相接的第一侧边、第二侧边和斜边，所述第一侧边与所述承靠面之间设置有胶点，所述斜边与所述挡板贴合设置，所述第二侧边与所述斜边形成的斜角端卡接于所述卡槽内。
在一实施例中，所述挡板包括相互连接的横板和竖板，所述横板与所述本体连接，所述竖板与所述斜边平行且贴合设置。
在一实施例中，所述本体上设置有凸台，所述凸台与所述棱镜的底面抵接，所述横板的厚度与所述凸台的高度相同。
在一实施例中，所述承靠面与所述第一侧边平行设置，除所述胶点位置 外，所述承靠面与所述第一侧边贴合设置。
在一实施例中，所述承靠面包括至少两个间隔设置的子承靠面，每一所述子承靠面上均设置有所述胶点。
在一实施例中，所述胶点的数量至少为两个，至少两个所述胶点的高度相同。
在一实施例中，所述卡槽的宽度自所述卡槽底部向所述卡槽开口呈渐扩设置，且所述卡槽的一边与所述第二侧边平行且部分贴合设置。
在一实施例中，所述挡板与所述本体一体成型。
在一实施例中，所述棱镜为直角三棱镜，所述第一侧边和所述第二侧边相互垂直。
在一实施例中，所述胶点的厚度为0.9mm～1.1mm。
根据本发明的另一个方面，本发明还提供一种投影光机，所述投影光机包括上述所述的光机的棱镜固定结构。
上述方案中，光机的棱镜固定结构包括本体和棱镜，本体上设置有卡槽、承靠面和挡板，棱镜包括首尾相接的第一侧边、第二侧边和斜边，第一侧边与承靠面之间设置有胶点，斜边与挡板贴合设置，第二侧边与斜边形成的斜角端卡接于卡槽内。通过改变点胶位置，在棱镜与光机本体之间的承靠面进行点胶，并且在棱镜的斜边设计挡板，当光机点亮后，由于温度的上升，胶点受热膨胀对棱镜产生力的作用，棱镜将被前推。在未设计挡板时，棱镜会沿力F的方向移动；而在增加了挡板后，棱镜预运动而挡板对棱镜产生支持力Fn和静摩擦力F f。并且因为胶点膨胀对棱镜产生的力相对较小，挡板对棱镜产生支持力Fn和静摩擦力F f足够平衡胶点对棱镜的作用力，故棱镜能够保持相对静止，不会发生偏移。该实施例通过改变点胶位置同时在棱镜斜边处增加挡板，确保了在光机长时间使用下，棱镜不会因为胶点发热膨胀而位置发生偏移，有效地避免了虚焦现象的产生。
附图说明
为了更清楚地说明本发明实施方式或现有技术中的技术方案，下面将对实施方式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发明的一些实施方式，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示出的结构获得其他的附图。
图1为本发明实施例光机的棱镜固定结构的俯视图；
图2为图1在A处的放大图；
图3为本发明实施例光机的棱镜固定结构的立体结构示意图；
图4为本发明实施例光机的棱镜固定结构的部分结构示意图(去除棱镜)；
图5为本发明实施例挡板的立体结构示意图；
图6为本发明实施例棱镜和挡板的受力分析图。
附图标号说明：
1、本体；2、棱镜；21、第一侧边；22、第二侧边；23、斜边；24、斜角端；3、卡槽；31、一边；4、胶点；5、挡板；51、横板；52、竖板；6、凸台；7、承靠面。
本发明目的的实现、功能特点及优点将结合实施方式，参照附图做进一步说明。
具体实施方式
下面将结合本发明实施方式中的附图，对本发明实施方式中的技术方案进行清楚、完整地描述，显然，所描述的实施方式仅仅是本发明的一部分实施方式，而不是全部的实施方式。基于本发明中的实施方式，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施方式，都属于本发明保护的范围。
需要说明，本发明实施方式中所有方向性指示(诸如上、下……)仅用于解释在某一特定姿态(如附图所示)下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
另外，在本发明中如涉及“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其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至少一个该特征。
并且，本发明各个实施方式之间的技术方案可以相互结合，但是必须是 以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本发明要求的保护范围之内。
参见图1-图4，根据本发明的一个方面，本发明提供一种光机的棱镜固定结构，包括本体1和棱镜2，本体1上设置有卡槽3、承靠面7和挡板5，棱镜2包括首尾相接的第一侧边21、第二侧边22和斜边23，第一侧边21与承靠面7之间设置有胶点4，斜边23与挡板5贴合设置，第二侧边22与斜边23形成的斜角端24卡接于卡槽3内。
传统的点胶方式是在棱镜2底部的光机本体1上开三个孔，并进行灌入式注胶。当光机正常工作时，光机腔内及光机本体1的温度上升使得胶点4受热膨胀，膨胀对棱镜2产生力的作用。由于同种胶点4的热膨胀系数相同，膨胀度与温度成正相关，即胶点4对棱镜2产生的力与温度成正相关。具体计算公式为：f＝a*△t，其中a为胶点4的热膨胀系数，△t为不同位置的温度变化量。由于不同胶点4位置的温度不同，不同位置的胶点4对棱镜2产生的力大小不同，棱镜2受力不均，易造成棱镜2不同位置发生不同程度的偏移，产生虚焦现象。
上述实施例中，通过改变胶点4的位置，在棱镜2与光机本体1之间的承靠面7进行点胶，并且在棱镜2的斜边23设计挡板5，当光机点亮后，由于温度的上升，胶点4受热膨胀对棱镜2产生力的作用，棱镜2将被前推。具体受力分析如图6所示，其中F为胶点4对棱镜2综合力的作用。在未设计挡板5时，棱镜2会沿力F的方向移动；而在增加了挡板5后，棱镜2预运动而挡板5对棱镜2产生支持力Fn和静摩擦力F f。并且因为胶点4膨胀对棱镜2产生的力相对较小，挡板5对棱镜2产生支持力Fn和静摩擦力F f足够平衡胶点4对棱镜2的作用力，三者满足受力平衡条件，即：
Fn＝Fcosθ
Ff＝Fsinθ
故棱镜2能够保持相对静止，不会发生偏移。该实施例通过改变点胶位置同时在棱镜2的斜边23处增加挡板5，确保了在光机长时间使用下，棱镜2不会因为胶点4发热膨胀而位置发生偏移，有效地避免了虚焦现象的产生。
具体地，参照图1-图3，棱镜2为直角三棱镜，第一侧边21和第二侧边22相互垂直。棱镜2为光机成像重要光学元件，用于改变光的传播方向，使 反射光在镜片传输中沿固定位置传播。本发明将胶点4设置在第一侧边21，一是因为在第二侧边22无承靠面7，并且第二侧边22位置本体1与棱镜2件存在空隙，温度较高，若在此处点胶易造成胶点4过于膨胀推动棱镜2转动和胶点4老化。
在一实施例中，参照图2、图3和图5，挡板5包括相互连接的横板51和竖板52，横板51与本体1连接，竖板52与斜边23平行且贴合设置。横板51与竖板52可以垂直连接，横板61用于与本体1连接，竖板52与斜边23平行并且面贴合设置，用以对斜边23提供有效的固定作用。当然，这里可以设计多个挡板5，多个挡板5沿斜边23的延伸方向间隔设置，通过多个竖板52与斜边23贴合用以抵销受热膨胀的胶点4对棱镜2的作用力，确保棱镜2固定不发生偏移，避免虚焦现象的产生。
在一实施例中，本体1上设置有凸台6，凸台6与棱镜2的底面抵接，横板51的厚度与凸台6的高度相同。凸台6用以起到定位和支撑作用，横板51的厚度与凸台6高度相同，确保棱镜2在同一水平高度；且竖板52的高度要低于棱镜2有效光区下边沿，在其固定棱镜2的同时避免遮光。
在一实施例中，承靠面7与第一侧边21平行设置，除胶点4位置外，承靠面7与第一侧边21贴合设置。这里的承靠面7为一整个平面，承靠面7与第一侧边21平行且贴合设置用以对棱镜2进行定位。
在一实施例中，承靠面7包括至少两个间隔设置的子承靠面，每一子承靠面上均设置有胶点4。承靠面7为棱镜2侧面定位面，保证棱镜2与DMD存在一定间距。当承靠面7包括至少两个子承靠面时，胶点4的数量至少为两个，至少两个胶点4的高度相同。胶点4的高度相同，指胶点4均处于同一水平高度，这样棱镜2不会因为在竖向上(棱镜2高度方向)受力不均导致棱镜2倾斜。另外，横板51可以与其中一个子承靠面连接，这样更加方便支撑棱镜2。
在一实施例中，卡槽3的宽度自卡槽3底部向卡槽3的开口呈渐扩设置，且卡槽3的一边31与第二侧边22平行且部分贴合设置。卡槽3用于固定棱镜2，且与棱镜2的斜角端24存在微小隙缝便于安装，为确保安装紧密，卡槽3的一边31与棱镜2的第二侧边22贴合确保棱镜2不会发生移动。当然，这里说的贴合只是卡槽3的一边31与第二侧边22位于斜角端24的部分重合，而不是卡槽3的一边31与整个第二侧边22贴合。
在一实施例中，挡板5与本体1一体成型。挡板5与本体1材质一样， 采用一体成型制作更加牢固，制作更加方便。
在一实施例中，胶点4的厚度为0.9mm～1.1mm，点胶厚度根据胶量大小定义，更具体的，可以为1.0mm。
根据本发明的另一个方面，本发明还提供一种投影光机，投影光机包括上述的光机的棱镜固定结构。由于投影光机包括了上述光机的棱镜固定结构的所有实施例的全部技术方案，因此，至少具有上述全部技术方案带来的所有有益效果，在此不在一一赘述。
以上仅为本发明的可选实施例，并非因此限制本发明的专利范围，凡是在本发明的技术构思下，利用本发明说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本发明的专利保护范围。

Claims (11)

  1. 一种光机的棱镜固定结构，其特征在于，包括本体和棱镜，所述本体上设置有卡槽、承靠面和挡板，所述棱镜包括首尾相接的第一侧边、第二侧边和斜边，所述第一侧边与所述承靠面之间设置有胶点，所述斜边与所述挡板贴合设置，所述第二侧边与所述斜边形成的斜角端卡接于所述卡槽内。
  2. 根据权利要求1所述的光机的棱镜固定结构，其特征在于，所述挡板包括相互连接的横板和竖板，所述横板与所述本体连接，所述竖板与所述斜边平行且贴合设置。
  3. 根据权利要求2所述的光机的棱镜固定结构，其特征在于，所述本体上设置有凸台，所述凸台与所述棱镜的底面抵接，所述横板的厚度与所述凸台的高度相同。
  4. 根据权利要求1所述的光机的棱镜固定结构，其特征在于，所述承靠面与所述第一侧边平行设置，除所述胶点位置外，所述承靠面与所述第一侧边贴合设置。
  5. 根据权利要求1所述的光机的棱镜固定结构，其特征在于，所述承靠面包括至少两个间隔设置的子承靠面，每一所述子承靠面上均设置有所述胶点。
  6. 根据权利要求5所述的光机的棱镜固定结构，其特征在于，所述胶点的数量至少为两个，至少两个所述胶点的高度相同。
  7. 根据权利要求1所述的光机的棱镜固定结构，其特征在于，所述卡槽的宽度自所述卡槽底部向所述卡槽开口呈渐扩设置，且所述卡槽的一边与所述第二侧边平行且部分贴合设置。
  8. 根据权利要求1～7中任一项所述的光机的棱镜固定结构，其特征在于，所述挡板与所述本体一体成型。
  9. 根据权利要求1～7中任一项所述的光机的棱镜固定结构，其特征在于，所述棱镜为直角三棱镜，所述第一侧边和所述第二侧边相互垂直。
  10. 根据权利要求1～7中任一项所述的光机的棱镜固定结构，其特征在于，所述胶点的厚度为0.9mm～1.1mm。
  11. 一种投影光机，其特征在于，所述投影光机包括权利要求1～10中任一项所述的光机的棱镜固定结构。
PCT/CN2022/101514 2022-05-23 2022-06-27 光机的棱镜固定结构及投影光机 WO2023226140A1 (zh)

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