WO2021013184A1 - 透声幕 - Google Patents

透声幕 Download PDF

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Publication number
WO2021013184A1
WO2021013184A1 PCT/CN2020/103550 CN2020103550W WO2021013184A1 WO 2021013184 A1 WO2021013184 A1 WO 2021013184A1 CN 2020103550 W CN2020103550 W CN 2020103550W WO 2021013184 A1 WO2021013184 A1 WO 2021013184A1
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WIPO (PCT)
Prior art keywords
sound
transmitting
screen
holes
hole
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PCT/CN2020/103550
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English (en)
French (fr)
Inventor
张红秀
王杰
孙微
王霖
李屹
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深圳光峰科技股份有限公司
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Publication of WO2021013184A1 publication Critical patent/WO2021013184A1/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
    • G03B21/54—Accessories
    • G03B21/56—Projection screens

Definitions

  • the utility model relates to a sound-transmitting screen, which belongs to the technical field of projection screen manufacturing.
  • the pursuit of the perfect fusion of sound and picture has been the unremitting pursuit of the film industry for nearly a hundred years.
  • the most ideal position for speakers is behind the screen.
  • the transparent sound screen is the standard configuration of the theater, which can be the largest Restore the real sound to the limit.
  • the current sound-transmitting screens mainly include perforated screens and woven screens.
  • the woven screens have low gain and poor polarization-maintaining performance, while perforated screens have the advantages of high gain and high polarization-maintaining.
  • Patent document CN201853063U discloses a sound-transmitting projection screen, and the projection screen is uniformly opened with cylindrical through holes with a diameter of 0.2mm-1.5mm.
  • Patent document US009530397B2 discloses a perforated sound-permeable screen, and a plurality of truncated cone-shaped through holes are provided on the screen.
  • the sound-transmitting holes on the perforated screen have a single shape, such as cylindrical or truncated cone-shaped. Although they can make the sound from the speaker pass through the screen, the sound-transmitting holes do not consider the speaker and the perforated screen. The relative position of the sound wave does not consider the propagation direction of the sound wave.
  • the perforated screen of the above structure will cause the sound wave to diffract and produce moiré fringes, which affects the sound and picture effects, and the sound transmission effect is poor.
  • the technical problem to be solved by the utility model is to provide a sound-transmitting screen in view of the shortcomings of the prior art, so that the axial direction of the sound-transmitting through hole is consistent with the sound propagation direction, which is beneficial for sound to pass through the sound-transmitting screen without changing the transparency.
  • the perforation rate of the sound screen viewing surface the sound transmission effect and the picture effect are improved, and the user's viewing experience is optimized.
  • a sound-transmitting screen comprising a sound-transmitting screen substrate and one or more sound-transmitting through holes arranged on the sound-transmitting screen substrate, the sound-transmitting through holes in the sound-transmitting screen base
  • the position on the material is consistent with the connection direction of at least one sound source and the extending direction of the sound-transmitting through hole in the sound-transmitting screen substrate.
  • the material of the sound-transmitting screen substrate is polyvinyl chloride, polycarbonate or polyethylene terephthalate.
  • the through-hole rate of the sound-transmitting screen is 0.1%-10%.
  • the aperture of the sound-transmitting through hole is 0.05 mm to 1.5 mm.
  • the sound-transmitting through holes are arranged regularly or randomly.
  • the regular arrangement includes a matrix arrangement, an equilateral triangle arrangement or a circular arrangement.
  • the sound-transmitting through hole is a sound-transmitting through hole obtained by laser perforation.
  • the sound-transmitting screen substrate is divided into two or more areas corresponding to two or more sound sources, and the sound-transmitting area in at least one area is
  • the hole is set as: the position of the sound-transmitting through hole in the area on the sound-transmitting screen substrate and the connection direction of the sound source corresponding to the area and the sound-transmitting through-hole in the sound-transmitting screen substrate
  • the extension direction is the same.
  • the position of the sound-transmitting through hole on the sound-transmitting screen substrate of the present invention is consistent with the connection direction of at least one sound source and the extending direction of the sound-transmitting through hole in the sound-transmitting screen substrate.
  • the axial direction of the through hole is consistent with the sound propagation direction, which is beneficial for sound to pass through the sound transmission screen. Without changing the perforation rate of the sound transmission screen viewing surface, the sound transmission effect and the picture effect are improved, and the user's viewing is optimized Experience.
  • Figure 1 is a schematic plan view of the sound-transmitting screen of the utility model
  • Figure 2 is a cross-sectional view of the utility model acoustic curtain
  • Figure 3 is a schematic diagram of the sound-transmitting screen when the utility model adopts three sound sources when perforating;
  • Figure 4 is a cross-sectional view of Comparative Example 1 of the utility model
  • Figure 5 is a cross-sectional view of Comparative Example 2 of the utility model
  • Fig. 6 is a schematic diagram of the sound wave attenuation of the first embodiment of the utility model and the comparative example.
  • Figure 1 is a schematic plan view of the sound-transmitting screen of the present invention
  • Figure 2 is a cross-sectional view of the sound-transmitting screen of the present invention.
  • the present invention provides a sound-transmitting screen, the sound-transmitting screen comprising a sound-transmitting screen substrate 100 and one or more sound-transmitting panels arranged on the sound-transmitting screen substrate 100 ⁇ 200.
  • the material of the sound-transmitting screen substrate 100 is polyvinyl chloride (PVC), polycarbonate (PC) or polyethylene terephthalate (PET), and the sound-transmitting through holes 200 are arranged in the sound-transmitting
  • PVC polyvinyl chloride
  • PC polycarbonate
  • PET polyethylene terephthalate
  • the through hole on the screen substrate 100 places the sound source 300 (such as a sound) on one side of the sound-transmitting screen, and the sound emitted from the sound source 300 can reach the sound-transmitting screen after passing through the sound-transmitting hole 200 The other side.
  • the sound-transmitting holes 200 are set as follows: the position of the sound-transmitting holes 200 on the sound-transmitting screen substrate 100 and The connection direction of at least one sound source 300 is consistent with the extending direction of the sound-transmitting through hole 200 in the sound-transmitting screen substrate 100.
  • the reason why the existing sound-transmitting screens cause sound wave diffraction is that when an obstacle is encountered during the propagation of the sound wave, part of the sound wave will go around behind the obstacle and continue to propagate forward.
  • the axial direction of the through hole of the sound-transmitting screen in the prior art ( The extending direction of the sound-transmitting through holes in the sound-transmitting screen substrate is different from the sound propagation direction, so diffraction will occur.
  • the sound-transmitting through hole 200 is set as the connection direction between the position of the sound-transmitting through hole 200 on the sound-transmitting screen substrate 100 and at least one sound source 300 and the sound-transmitting through hole 200
  • the extension direction of the sound-transmitting screen 200 in the sound-transmitting screen substrate 100 is consistent, so that the axial directions of the different sound-transmitting through holes are consistent with the corresponding sound direction emitted by the sound source, so that the diffraction phenomenon can be alleviated to a certain extent, and the sound transmission is improved. effect.
  • the arrangement of the sound-transmitting through holes 200 on the sound-transmitting screen substrate 100 can be a regular arrangement or a random arrangement.
  • the sound-transmitting through-holes 200 may be arranged in a matrix, that is, adjacent sound-transmitting through-holes 200 form a rectangle; or, the sound-transmitting through-holes 200 are arranged in an equilateral triangle, that is, the sound-transmitting through-holes 200 are arranged in rows,
  • the sound-transmitting holes 200 in each row are evenly arranged, and three adjacent sound-transmitting holes 200 in two adjacent rows form an equilateral triangle; or, the sound-transmitting holes 200 are arranged in a ring shape, that is, a plurality of sound-transmitting holes 200 are arranged in a ring shape.
  • the holes form a plurality of circular rings; or, the sound-transmitting through holes 200 are randomly distributed on the sound-transmitting screen substrate 100.
  • the aperture of the sound-transmitting hole is too large, which may cause missing or distorted pixels of some images.
  • the aperture of the sound-transmitting hole 200 is 0.05mm-1.5mm, preferably 0.1 ⁇ 0.5mm.
  • the defined through-hole ratio is the ratio of the area of all sound-transmitting through-holes to the total area of the sound-transmitting screen.
  • the greater the through-hole ratio of the sound-transmitting through-hole the better the sound transmission effect, and when the through-hole ratio is too large, The reflectivity of the sound-transmitting screen is reduced, which makes the image quality effect poor. Therefore, the through-hole ratio in the present invention is 0.1%-10%, preferably 0.5%-5%.
  • the present invention does not limit the perforation method or the forming method of the sound-transmitting through hole 200, which can be mechanically punched or laser perforated.
  • the laser generator can be placed at the position of the sound source 300 used in conjunction with the sound-transmitting screen, and then a suitable arrangement of the sound-transmitting holes 200 can be selected according to actual needs. In this way, the direction of the laser light emitted by the laser generator is changed, and the sound-transmitting through hole 200 is formed at a suitable position of the sound-transmitting screen substrate 100.
  • multiple sound-transmitting through holes 200 can be simultaneously processed on the sound-transmitting screen substrate 100 through a customized mold, or after the punching direction of the punch is set, the sound-transmitting screen substrate 100 A plurality of sound-transmitting through holes 200 are processed one by one on 100.
  • the number of sound sources 300 used in conjunction with the sound transparent screen is often greater than one.
  • FIG. 3 is a schematic diagram of the sound-transmitting screen when the utility model uses three sound sources when perforating. As shown in Figure 3, at this time, in order to optimize the sound-transmitting effect of the sound-transmitting screen, it is necessary to follow The arrangement of the sound source 300 divides the sound-transmitting screen substrate 100 into three areas in the transverse direction, and places the three laser generating devices on the positions of the three sound sources 300. Each laser generating device is processed and processed separately.
  • Acoustic through hole 200 in the corresponding area or place a laser generating device at the position of a sound source 300, and move the position of the laser generating device after processing the acoustic through hole 200 in the corresponding area, thereby Suitable sound-transmitting through holes 200 are processed in the three areas.
  • the number of sound sources 300 can also be four, which are arranged in a rectangle and placed behind the sound-transmitting curtain. At this time, when preparing the sound-transmitting screen, it is necessary to place laser generators at different positions of the sound source 300 to process appropriate sound-transmitting through holes 200 in the four areas.
  • the present invention does not limit the number of sound sources 300, and those skilled in the art can make adjustments according to actual needs.
  • the sound-transmitting screen substrate 100 is divided into two or more areas corresponding to two or more sound sources 300, and the sound-transmitting area in at least one area is
  • the hole 200 is set as: the position of the sound-transmitting through hole 200 in the area on the sound-transmitting screen substrate 100 and the connection direction of the sound source 300 corresponding to the area and the sound-transmitting through hole 200 in the transparent
  • the extension directions in the acoustic screen substrate 100 are consistent.
  • the distance a 1 is 2.5mm
  • the through-hole rate is 0.5%
  • the sound-transmitting through-hole 200 is formed by laser perforation.
  • the material and thickness of the sound-transmitting screen can be selected by those skilled in the art according to actual needs. , It can also be the same as the sound-transmitting screen in the prior art, which will not be repeated here.
  • the position of the sound-transmitting through hole 200 on the sound-transmitting screen substrate 100 and the connection direction between the sound source 300 and the sound-transmitting screen The sound through holes 200 extend in the same direction in the sound-transmitting screen substrate 100.
  • Figure 4 is a cross-sectional view of Comparative Example 1 of the present invention.
  • the size of the sound-transmitting screen is 1.5m*1.5m
  • the diameter d 2 of the sound-transmitting hole 12 is 0.5mm
  • a plurality of sound-transmitting holes 12 are arranged in a matrix, adjacent to each other.
  • the distance a 2 between the sound-transmitting through holes 12 is 2.5 mm
  • the molding method of the sound-transmitting through holes 12 is a mechanical punching method.
  • the axis of the sound-transmitting through hole 12 is perpendicular to the plane where the sound-transmitting screen substrate 11 is located, and the sound-transmitting through hole 12 is a cylindrical through hole.
  • Figure 5 is a cross-sectional view of Comparative Example 2 of the present invention.
  • acoustically transparent screen size of 1.5m * 1.5m
  • the diameter of the central through hole of the acoustic lens 22 d 3 is 0.5mm
  • the plurality of sound-permeable through holes 22 arranged in a matrix The distance a 3 between adjacent sound-transmitting through holes 22 is 2.5 mm
  • the molding method of the sound-transmitting through holes 22 is a laser perforation method.
  • the axis of the sound-transmitting through hole 22 is perpendicular to the plane where the sound-transmitting screen substrate 21 is located, and the sound-transmitting through hole 22 is a truncated cone-shaped through hole.
  • test the sound transmission performance of the above three sound-transmitting screens pass the sound waves of 200Hz-20000Hz through the three sound-transmitting screens, and test the attenuation of sound waves of different frequencies behind the sound-transmitting screens.
  • Fig. 6 is a schematic diagram of the sound wave attenuation of the first embodiment of the utility model and the comparative example. The test result is shown in Fig. 6.
  • Comparative Example 1 the sound attenuation of the cylindrical sound-transmitting through hole processed by mechanical punching is the most serious, and the sound transmission performance of the sound-transmitting through hole in this embodiment is the best.
  • the position of the sound-transmitting through hole on the sound-transmitting screen substrate of the present invention is consistent with the connection direction of at least one sound source and the extending direction of the sound-transmitting through hole in the sound-transmitting screen substrate.
  • the axial direction of the through hole is consistent with the sound propagation direction, which is beneficial for sound to pass through the sound transmission screen. Without changing the perforation rate of the sound transmission screen viewing surface, the sound transmission effect and the picture effect are improved, and the user's viewing is optimized Experience.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Curtains And Furnishings For Windows Or Doors (AREA)

Abstract

一种透声幕，透声幕包含透声幕基材（100，11，21）以及设置在透声幕基材（100，11，21）上的一个或一个以上的透声通孔（200，12，22），透声通孔（200，12，22）在透声幕基材（100，11，21）上的位置与至少一声源（300）的连线方向和透声通孔（200，12，22）在透声幕基材（100，11，21）中的延伸方向一致。由于透声通孔（200，12，22）在透声幕基材（100，11，21）上的位置与至少一声源（300）的连线方向和透声通孔（200，12，22）在透声幕基材（100，11，21）中的延伸方向一致，使透声通孔（200，12，22）的轴线方向与声音传播方向一致，有利于声音穿过透声幕，在不改变透声幕观影面穿孔率的情况下，提高了透声效果和画面效果，优化了用户的观影体验。

Description

透声幕 技术领域
本实用新型涉及一种透声幕，属于放映屏幕制造技术领域。
背景技术
追求声音和画面的完美融合是电影业近百年来不懈的追求，为了使图像和声音完美融合，音箱最理想的摆放位置是在屏幕之后，现在透声幕已经是影院的标准配制，可以最大限度地还原真实的声音。目前的透声幕主要有打孔幕和编织幕，编织幕透声幕增益低、保偏性能差，而打孔幕则具有高增益、高保偏性等优点。
专利文献CN 201853063U中公开了一种透声投影幕布，其投影幕布上均匀开有直径为0.2mm-1.5mm的圆柱通孔。专利文献US009530397B2中公开了一种打孔透声幕，其幕布上开设多个圆台形通孔。
现有技术中打孔幕上透声通孔的形状单一，如均为圆柱形或圆台形，其虽然能够使音箱发出的声音通过屏幕，然而透声通孔的设置没有考虑音箱与打孔幕的相对位置，也没有考虑声波的传播方向，上述结构的打孔幕会使声波产生衍射，并产生摩尔条纹，影响声音和画面效果，透声效果较差。
实用新型内容
本实用新型所要解决的技术问题在于针对现有技术的不足，提供一种透声幕，使透声通孔的轴线方向与声音传播方向一致，有利于声音穿过透声幕，在不改变透声幕观影面穿孔率的情况下，提高了透声效果和画面效果，优化了用户的观影体验。
本实用新型所要解决的技术问题是通过如下技术方案实现的：
一种透声幕，所述透声幕包含透声幕基材以及设置在透声幕基材 上的一个或一个以上的透声通孔，所述透声通孔在所述透声幕基材上的位置与至少一声源的连线方向和所述透声通孔在所述透声幕基材中的延伸方向一致。
优选地，所述透声幕基材的材质为聚氯乙烯、聚碳酸酯或聚对苯二甲酸乙二醇酯。
为了获得较好的画质效果，所述透声幕的通孔率为0.1％～10％。
为了保证投影画面的质量，所述透声通孔的孔径为0.05mm～1.5mm。
优选地，所述透声通孔规则排列或随机排列。
优选地，所述规则排列包含矩阵排列、等边三角形排列或环形排列。
为了便于加工生产，所述透声通孔为激光穿孔得到的透声通孔。
为了使观影者具有良好的观影体验，所述透声幕基材划分有与两个或两个以上的声源对应的两个或两个以上的区域，至少一区域内的透声通孔被设置为：该区域内的透声通孔在所述透声幕基材上的位置与该区域对应的声源的连线方向和该透声通孔在所述透声幕基材中的延伸方向一致。
综上所述，本实用新型由于透声通孔在透声幕基材上的位置与至少一声源的连线方向和透声通孔在透声幕基材中的延伸方向一致，使透声通孔的轴线方向与声音传播方向一致，有利于声音穿过透声幕，在不改变透声幕观影面穿孔率的情况下，提高了透声效果和画面效果，优化了用户的观影体验。
下面结合附图和具体实施例，对本实用新型的技术方案进行详细地说明。
附图说明
图1为本实用新型透声幕的平面示意图；
图2为本实用新型透声幕的剖视图；
图3为本实用新型采用三个声源时透声幕在打孔时的示意图；
图4为本实用新型对比例一的剖视图；
图5为本实用新型对比例二的剖视图；
图6为本实用新型实施例一与对比例的声波衰减示意图。
具体实施方式
图1为本实用新型透声幕的平面示意图；图2为本实用新型透声幕的剖视图。如图1和图2所示，本实用新型提供一种透声幕，所述透声幕包含透声幕基材100以及设置在透声幕基材100上的一个或一个以上的透声通孔200。
所述透声幕基材100的材质为聚氯乙烯(PVC)、聚碳酸酯(PC)或聚对苯二甲酸乙二醇酯(PET)，所述透声通孔200为设置在透声幕基材100上的通孔，将声源300(如音响)放置在所述透声幕的一侧，从音响声源300发出的声音穿过透声通孔200后能够到达透声幕的另一侧。
为了优化本实用新型透声幕的透声效果，在本实用新型中，所述透声通孔200被设置为：所述透声通孔200在所述透声幕基材100上的位置与至少一声源300的连线方向和所述透声通孔200在所述透声幕基材100中的延伸方向一致。
现有透声幕会造成声波衍射的原因为，当声波传播过程中遇到障碍物，部分声波会绕至障碍物背后并继续向前传播，现有技术中透声幕通孔的轴向(透声通孔在透声幕基材中的延伸方向)与声音的传播方向不同，所以会产生衍射。而本实用新型通过将所述透声通孔200设置为所述透声通孔200在所述透声幕基材100上的位置与至少一声源300的连线方向和所述透声通孔200在所述透声幕基材100中的延伸方向一致，使得不同透声通孔的轴向与声源所发出的对应声音方向一致，因此可以在一定程度上缓解衍射现象，提高了透声效果。
所述透声通孔200在透声幕基材100上的排列方式可以为规则排列，也可以为随机排列。例如，所述透声通孔200可以矩阵排列，即相邻的透声通孔200形成矩形；或者，所述透声通孔200等边三角形排列，即所述透声通孔200成行排列，每行的透声通孔200均匀排列，且相邻两行中相邻的三个透声通孔200形成等边三角形；或者，所述 透声通孔200环形排列，即多个透声通孔组成多个圆环；或者，所述透声通孔200随机的分布在透声幕基材100上。
由于所述透声通孔200在所述透声幕基材100上的位置与至少一声源300的连线方向和所述透声通孔200在所述透声幕基材100中的延伸方向一致，即大部分的透声通孔轴线并非平行于水平线，所以当画面投射在透声幕上时，即便图像的像素落在透声通孔上，该像素也不会穿过透声通孔，因此从观影侧来看，大部分观众可以看到画质较好的图像。
但仍需注意的是：透声通孔孔径过大，可能会使部分图像的像素缺失或失真，为了保证投影画面的质量，所述透声通孔200的孔径为0.05mm～1.5mm，优选0.1～0.5mm。
定义通孔率为所有透声通孔的面积与透声幕总面积的比值，一般来说，透声通孔的通孔率越大，透声效果越好，而通孔率过大时，透声幕的反射率降低，使得画质效果较差，因此，本实用新型中通孔率为0.1％～10％，优选为0.5％～5％。
本实用新型并不限定透声通孔200的打孔方式或成型方式，其可以通过机械冲孔的方式，也可以采用激光穿孔方式。例如，当采用激光穿孔加工透声通孔200时，可以将激光发生设备放置在与所述透声幕配合使用的声源300的位置，之后根据实际需要选择合适的透声通孔200的排列方式，改变激光发生设备发出激光的方向，在透声幕基材100合适的位置上形成透声通孔200。当采用机械冲孔时，可以通过定制的模具在透声幕基材100上同时加工出多个透声通孔200，也可以在设定好凸模的冲压方向后，在透声幕基材100上逐个加工出多个透声通孔200。
需要补充的是，现有影院中，为了使观影者具有良好的观影体验，与所述透声幕配合使用的声源300的数量往往大于一个。
例如采用三个声源300与一个透声幕配合使用，将三个声源300沿横向(水平方向)依次均匀放置在透声幕后。图3为本实用新型采用三个声源时透声幕在打孔时的示意图，如图3所示，此时，为了优化透声幕的透声效果，在制备透声幕时，需要按照声源300的排布方 式将透声幕基材100沿横向均分为三个区域，并将三个激光发生设备分别放置在三个声源300的位置上，每个激光发生设备分别加工与其对应的区域内的透声通孔200；或者将一个激光发生设备放置在一个声源300的位置上，在其加工完成对应区域的透声通孔200后，再移动激光发生设备的位置，从而在三个区域中加工出合适的透声通孔200。
声源300的数量也可以为四个，其排列成矩形后放置在透声幕后。此时，在制备透声幕时，需要分别在不同的声源300的位置放置激光发生设备，以在四个区域上加工出合适的透声通孔200。
本实用新型并不限制声源300的数量，本领域技术人员可以根据实际需要进行调整。换句话说，在本实用新型中，所述透声幕基材100划分有与两个或两个以上的声源300对应的两个或两个以上的区域，至少一区域内的透声通孔200被设置为：该区域内的透声通孔200在所述透声幕基材100上的位置与该区域对应的声源300的连线方向和该透声通孔200在所述透声幕基材100中的延伸方向一致。
下面结合具体实施例及对比例来说明本实用新型透声幕的透声效果。
实施例一
在本实施例中，透声幕的尺寸为1.5m*1.5m，透声通孔200的直径d 1为0.5mm，多个透声通孔200成矩阵排列，相邻透声通孔200之间的间距a 1为2.5mm，通孔率为0.5％，透声通孔200成型方式为激光穿孔方式，所述透声幕的材质和厚度等参数可由本领域技术人员根据实际需要进行设计选择，也可与现有技术中的透声幕相同，在此不再赘述。
在本实施例中，与透声幕配合使用的声源300为一个，所述透声通孔200在所述透声幕基材100上的位置与声源300的连线方向和所述透声通孔200在所述透声幕基材100中的延伸方向一致。
对比例一
图4为本实用新型对比例一的剖视图。如图4所示，在对比例一中，透声幕的尺寸为1.5m*1.5m，透声通孔12的直径d 2为0.5mm，多个透声通孔12成矩阵排列，相邻透声通孔12之间的间距a 2为2.5mm， 透声通孔12成型方式为机械冲孔方式。
在本对比例中，所述透声通孔12的轴线与透声幕基材11所在平面垂直，所述透声通孔12为圆柱形通孔。
对比例二
图5为本实用新型对比例二的剖视图。如图5所示，在对比例二中，透声幕的尺寸为1.5m*1.5m，透声通孔22中心处的直径d 3为0.5mm，多个透声通孔22成矩阵排列，相邻透声通孔22之间的间距a 3为2.5mm，透声通孔22成型方式为激光穿孔方式。
在本对比例中，所述透声通孔22的轴线与透声幕基材21所在平面垂直，所述透声通孔22为圆台形通孔。
在消音室中对上述三个透声幕做透声性能测试，以200Hz-20000Hz的声波穿过三个透声幕，并测试穿过透声幕后不同频率声波的衰减。
图6为本实用新型实施例一与对比例的声波衰减示意图。测试结果如图6所示，对比例一中采用机械冲孔加工出的圆柱形透声通孔声音衰减最严重，本实施例中透声通孔的声音透过性能最优。
综上所述，本实用新型由于透声通孔在透声幕基材上的位置与至少一声源的连线方向和透声通孔在透声幕基材中的延伸方向一致，使透声通孔的轴线方向与声音传播方向一致，有利于声音穿过透声幕，在不改变透声幕观影面穿孔率的情况下，提高了透声效果和画面效果，优化了用户的观影体验。

Claims (8)

  1. 一种透声幕，所述透声幕包含透声幕基材以及设置在透声幕基材上的一个或一个以上的透声通孔，其特征在于，所述透声通孔在所述透声幕基材上的位置与至少一声源的连线方向和所述透声通孔在所述透声幕基材中的延伸方向一致。
  2. 如权利要求1所述的透声幕，其特征在于，所述透声幕基材的材质为聚氯乙烯、聚碳酸酯或聚对苯二甲酸乙二醇酯。
  3. 如权利要求1所述的透声幕，其特征在于，所述透声幕的通孔率为0.1％～10％。
  4. 如权利要求3所述的透声幕，其特征在于，所述透声通孔的孔径为0.05mm～1.5mm。
  5. 如权利要求4所述的透声幕，其特征在于，所述透声通孔规则排列或随机排列。
  6. 如权利要求5所述的透声幕，其特征在于，所述规则排列包含矩阵排列、等边三角形排列或环形排列。
  7. 如权利要求1所述的透声幕，其特征在于，所述透声通孔为激光穿孔得到的透声通孔。
  8. 如权利要求1-7中任一项所述的透声幕，其特征在于，所述透声幕基材划分有与两个或两个以上的声源对应的两个或两个以上的区域，至少一区域内的透声通孔被设置为：该区域内的透声通孔在所述透声幕基材上的位置与该区域对应的声源的连线方向和该透声通孔在所述透声幕基材中的延伸方向一致。
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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007322771A (ja) * 2006-06-01 2007-12-13 Osm:Kk 自立式昇降スクリーン
CN201853063U (zh) * 2010-11-06 2011-06-01 浙江宇立塑胶有限公司 一种透声投影幕布
CN204832755U (zh) * 2015-07-31 2015-12-02 马鞍山星球银幕科技有限公司 银幕透声孔
CN105700284A (zh) * 2016-04-27 2016-06-22 江苏卡罗卡国际动漫城有限公司 一种柔和型3d投影幕
CN206057783U (zh) * 2016-08-10 2017-03-29 南京卡本科技有限公司 一种投影幕板
CN107222798A (zh) * 2017-07-19 2017-09-29 歌尔科技有限公司 一种智能音箱显示装置
CN208044292U (zh) * 2018-02-08 2018-11-02 深圳市光峰光电技术有限公司 投影幕布
CN210639415U (zh) * 2019-07-24 2020-05-29 深圳光峰科技股份有限公司 透声幕

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007322771A (ja) * 2006-06-01 2007-12-13 Osm:Kk 自立式昇降スクリーン
CN201853063U (zh) * 2010-11-06 2011-06-01 浙江宇立塑胶有限公司 一种透声投影幕布
CN204832755U (zh) * 2015-07-31 2015-12-02 马鞍山星球银幕科技有限公司 银幕透声孔
CN105700284A (zh) * 2016-04-27 2016-06-22 江苏卡罗卡国际动漫城有限公司 一种柔和型3d投影幕
CN206057783U (zh) * 2016-08-10 2017-03-29 南京卡本科技有限公司 一种投影幕板
CN107222798A (zh) * 2017-07-19 2017-09-29 歌尔科技有限公司 一种智能音箱显示装置
CN208044292U (zh) * 2018-02-08 2018-11-02 深圳市光峰光电技术有限公司 投影幕布
CN210639415U (zh) * 2019-07-24 2020-05-29 深圳光峰科技股份有限公司 透声幕

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