WO2022148017A1 - 一种拼接式投影银幕 - Google Patents

一种拼接式投影银幕 Download PDF

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Publication number
WO2022148017A1
WO2022148017A1 PCT/CN2021/112245 CN2021112245W WO2022148017A1 WO 2022148017 A1 WO2022148017 A1 WO 2022148017A1 CN 2021112245 W CN2021112245 W CN 2021112245W WO 2022148017 A1 WO2022148017 A1 WO 2022148017A1
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WO
WIPO (PCT)
Prior art keywords
sound
transmitting holes
screen
area
splicing layer
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PCT/CN2021/112245
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English (en)
French (fr)
Inventor
王小虎
李艳龙
Original Assignee
深圳市时代华影科技股份有限公司
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Application filed by 深圳市时代华影科技股份有限公司 filed Critical 深圳市时代华影科技股份有限公司
Priority to EP21917060.2A priority Critical patent/EP4276530A1/en
Publication of WO2022148017A1 publication Critical patent/WO2022148017A1/zh

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Classifications

    • 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
    • G03B21/60—Projection screens characterised by the nature of the surface
    • 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
    • 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
    • G03B21/565—Screens allowing free passage of sound

Definitions

  • the utility model belongs to the technical field of film and television equipment, in particular to a spliced projection screen .
  • Metal screens have been used in theaters to show 3D movies for many years.
  • Traditional metal screens use PVC as the base material, and spray a mixture of organic solvent and aluminum powder on the surface. After the organic solvent evaporates, the aluminum powder evenly adheres to the PVC surface, forming a Metal reflective layer.
  • the metal screen produced by traditional spraying process has low reflectivity, and the polarization contrast ratio is generally around 150:1. Image crosstalk between left and right eyes is prone to occur during 3D movie projection, and the screen brightness is also low.
  • hard-based screen technology based on PET and other materials has emerged.
  • the metal reflective layer is formed by magnetron sputtering or evaporation, which greatly improves the reflectivity and polarization contrast.
  • the reflectivity of the splicing area of the projection screen in the prior art is significantly different from that of the non-splicing area, which affects the projection effect.
  • the technical problem to be solved by the embodiments of the present invention is to provide a spliced projection screen, which aims to solve the problem that the reflectivity of the spliced area and the reflectivity of the non-spliced area of the existing projection screen are significantly different.
  • a spliced projection screen comprising at least two screen panels arranged in sequence and spliced to each other, the side walls of the adjacent two said screen panels are spaced to form a seam, and the screen panels include a reflective surface for reflecting projected light and a surface opposite to the reflective surface
  • the backside of the spliced projection screen further includes a splicing layer disposed at the seam, the splicing layer covers the seam, and the splicing layer is bonded to the back through adhesive;
  • the overlapping area of the screen panel and the splicing layer is provided with a plurality of first sound-transmitting holes, and the non-overlapping area of the screen panel and the splicing layer is provided with a plurality of second sound-transmitting holes.
  • the viscose penetrates into the seam.
  • first sound-transmitting holes and the second sound-transmitting holes are evenly arranged on the screen panel.
  • the splicing layer is provided with a plurality of third sound-transmitting holes, and the third sound-transmitting holes penetrate through the splicing layer.
  • the adhesive penetrates into the third sound-transmitting hole.
  • the screen panel includes a first side surface and a second side surface that connect the reflective surface and the back surface and are opposite to each other, and the connecting line between the first side surface and the second side surface is connected to two adjacent screens.
  • the splicing direction of the board is vertical, the splicing layer extends from the first side surface to the second side surface, and two end faces of the splicing layer are flush with the first side surface and the second side surface respectively.
  • the width of the seam is less than 0.5 mm, and the width of the splicing layer along the splicing direction of the two adjacent screen panels ranges from 0.5 mm to 30 mm.
  • the total area of the plurality of first sound-transmitting holes and the plurality of second sound-transmitting holes passing through the reflection surface is 0.5% to 10% of the area of the reflection surface.
  • the total area of the plurality of first sound-transmitting holes and the plurality of second sound-transmitting holes passing through the reflection surface is 4.5% to 7% of the area of the reflection surface.
  • the embodiment of the present utility model has the beneficial effects that: the utility model is provided with sound-transmitting holes in the area of the screen panel that overlaps with the splicing layer and the area that does not overlap with the splicing layer, so that it can be used on the screen for a long time.
  • the dust on the reflective surface gathers on the reflective surface in a state of uniform distribution, which avoids reflectivity differences in the area that overlaps with the splicing layer and the area that does not overlap with the splicing layer on the screen panel, and enhances the projection effect.
  • FIG. 1 is a schematic diagram of the overall structure of a spliced projection screen provided by one of the embodiments of the present utility model
  • Fig. 2 is the cutaway structure schematic diagram of Fig. 1 along A-A direction;
  • Fig. 3 is the enlarged structural representation of C part among Fig. 2;
  • FIG. 4 is a schematic diagram of the overall structure of a spliced projection screen provided by another embodiment of the present invention.
  • Fig. 5 is the cut-away structure schematic diagram of Fig. 4 along D-D direction;
  • Fig. 6 is the enlarged structural representation of E part in Fig. 5;
  • Fig. 7 is the overall structure schematic diagram of another angle of view of Fig. 1;
  • FIG. 8 is a schematic view of the cross-sectional structure of FIG. 7 along the B-B direction.
  • FIG. 1 to FIG. 8 it is a spliced projection screen provided by an embodiment of the present invention, comprising at least two screen panels 100 arranged in sequence and spliced to each other, and the side walls of the two adjacent screen panels 100 are spaced apart from each other.
  • Patchwork 200 the screen panel 100 includes a reflective surface 101 for reflecting projection light and a backside 102 opposite to the reflective surface 101
  • the spliced projection screen further includes a splicing layer 300 disposed at the patchwork 200, and the splicing layer 300 covers the patchwork 200 , the splicing layer 300 is bonded to the back surface 102 by the adhesive 500 .
  • a plurality of first sound-transmitting holes 401 are formed on the overlapping area of the screen plate 100 and the splicing layer 300
  • a plurality of second sound-transmitting holes are formed on the non-overlapping area of the screen plate 100 and the splicing layer 300 .
  • the aggregation on 101 presents a state of uniform distribution, which avoids reflectivity differences in the area overlapping with the splicing layer 300 and the area not overlapping with the splicing layer 300 on the screen panel 100, and enhances the projection effect.
  • the adhesive 500 when the splicing layer 300 is glued to the back surface 102 of the screen panel 100 through the adhesive 500, the adhesive 500 penetrates into the seam 200, and after the adhesive 500 is cured, the gap between the splicing layer 300 and the screen panel 100 can be significantly increased. Adhesion, thereby enhancing the strength and tensile strength of the seam 200, preventing the seam 200 from cracking during use of the screen.
  • the adhesive 500 can penetrate into the first sound-transmitting hole 401 in addition to penetrating into the seam 200 , which can further increase the adhesive force between the splicing layer 300 and the screen panel 100 , thereby further enhancing the strength of the seam 200 and tensile strength.
  • the splicing layer 300 is provided with a plurality of third sound-transmitting holes 403 , and the third sound-transmitting holes 403 penetrate through the splicing layer 300 .
  • the adhesive 500 penetrates into the seam 200 and the first sound-transmitting hole 401, and also penetrates into the third sound-transmitting hole 403, which can further increase the adhesive force between the splicing layer 300 and the screen panel 100. Make the splicing more solid.
  • the third sound-transmitting holes 403 are directly opposite to the first sound-transmitting holes 401, so that the sound-transmitting effect of the screen panel 100 can be enhanced; of course, the third sound-transmitting holes 403 may not be directly facing the first sound-transmitting holes 401 .
  • the screen panel 100 of this embodiment includes a first side surface 103 and a second side surface 104 that connect the reflective surface 101 and the back surface 102 and are opposite to each other.
  • the connection line between the first side surface 103 and the second side surface 104 is The splicing direction of two adjacent screen panels 100 is vertical, the splicing layer 300 extends from the first side 103 to the second side 104, and the two end faces of the splicing layer 300 are flush with the first side 103 and the second side 104 respectively, which can ensure The splicing layer 300 completely covers the area of the seam 200 to further enhance the strength and tensile strength of the seam 200 .
  • the width of the seam 200 is less than 0.5 mm, and the width of the splicing layer 300 along the splicing direction of the two adjacent screen panels 100 ranges from 0.5 mm to 30 mm, that is, the width of the splicing layer 300 is greater than the width of the seam 200,
  • the width of the seam 200 is small enough to prevent the audience from seeing the area of the seam 200 from the front of the screen while ensuring the firmness of the seam.
  • the total area of the plurality of first sound-transmitting holes 401 and the plurality of second sound-transmitting holes 402 passing through the reflection surface 101 is 0.5% to 10% of the area of the reflection surface 101 . Further, the total area of the plurality of first sound-transmitting holes 401 and the plurality of second sound-transmitting holes 402 passing through the reflection surface 101 is 4.5% to 7% of the area of the reflection surface 101 .
  • sound-transmitting holes are provided in the area of the screen panel 100 that overlaps with the splicing layer 300 and the area that does not overlap the splicing layer 300 , so that the reflective surface 101 is not affected by the reflective surface 101 during the long-term use of the screen.
  • the dust collected on the reflective surface 101 is uniformly distributed, which avoids reflectivity differences in the area overlapping with the splicing layer 300 and the area that does not overlap with the splicing layer 300 on the screen panel 100 and enhances the projection effect.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Overhead Projectors And Projection Screens (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

本实用新型实施例适用于影视器材领域，提供了一种拼接式投影银幕，包括依次排列且相互拼接的至少两块银幕板，相邻两块所述银幕板的侧壁间隔形成拼缝，所述银幕板包括用于反射投影光线的反射面以及与所述反射面相对的背面，所述拼接式投影银幕还包括设置在所述拼缝处的拼接层，所述拼接层覆盖所述拼缝，所述拼接层通过粘胶与所述背面粘接；所述银幕板上与所述拼接层的重叠区域开设有多个第一透声孔，所述银幕板上与所述拼接层的非重叠区域开设有多个第二透声孔。本实用新型可解决现有的投影银幕拼接区域反射率与非拼接区域反射率存在明显差异的问题。

Description

一种拼接式投影银幕 技术领域
本实用新型属于影视器材技术领域，尤其涉及一种拼接式投影银幕 。
 背景技术
金属银幕应用于影院进行3D电影的放映已有多年时间，传统金属银幕采用PVC作为基材，在表面喷涂有机溶剂和铝粉的混合物，待有机溶剂挥发后，铝粉均匀附着于PVC表面，形成金属反射层。传统喷涂工艺制作的金属银幕反射率低，偏振对比度普遍在150:1左右，在3D电影放映时容易出现左右眼图像串扰，银幕亮度也较低。近年来出现了基于PET等材质的硬基银幕技术，金属反射层采用磁控溅射或蒸镀方式形成，在反射率和偏振对比度方面大幅提升。然而现有技术的投影银幕拼接区域反射率与非拼接区域反射率存在明显差异，影响投影效果。
 技术问题
本实用新型实施例所要解决的技术问题在于提供一种拼接式投影银幕，旨在解决现有的投影银幕拼接区域反射率与非拼接区域反射率存在明显差异的问题。
 技术解决方案
本实用新型实施例是这样实现的，一种拼接式投影银幕 ，包括依次排列且相互拼接的至少两块银幕板，相邻两块所述银幕板的侧壁间隔形成拼缝，所述银幕板包括用于反射投影光线的反射面以及与所述反射面相对的背面，所述拼接式投影银幕还包括设置在所述拼缝处的拼接层，所述拼接层覆盖所述拼缝，所述拼接层通过粘胶与所述背面粘接；
所述银幕板上与所述拼接层的重叠区域开设有多个第一透声孔，所述银幕板上与所述拼接层的非重叠区域开设有多个第二透声孔。
进一步地，所述粘胶渗透入所述拼缝内。
进一步地，所述第一透声孔和所述第二透声孔在所述银幕板上均匀排布。
进一步地，所述拼接层上设置有多个第三透声孔，所述第三透声孔贯穿所述拼接层。
进一步地，所述粘胶渗透入所述第三透声孔内。
进一步地，所述银幕板包括连接所述反射面和所述背面且相对的第一侧面和第二侧面，所述第一侧面和所述第二侧面的连线与相邻两块所述银幕板的拼接方向垂直，所述拼接层自所述第一侧面延伸至所述第二侧面，所述拼接层的两个端面分别与所述第一侧面和所述第二侧面平齐。
进一步地，所述拼缝的宽度小于0.5mm，所述拼接层沿相邻两块所述银幕板的拼接方向的宽度范围为0.5mm～30mm。
进一步地，多个所述第一透声孔和多个所述第二透声孔贯穿所述反射面的总面积为所述反射面面积的0.5%～10%。
进一步地，多个所述第一透声孔和多个所述第二透声孔贯穿所述反射面的总面积为所述反射面面积的4.5%～7%。
 有益效果
本实用新型实施例与现有技术相比，有益效果在于：本实用新型在银幕板上与拼接层重叠的区域以及与拼接层不重叠的区域均设置有透声孔，使得在银幕长时间使用过程中，反射面上的灰尘在反射面上的聚集呈现均匀分布的状态，避免银幕板上与拼接层重叠的区域以及与拼接层不重叠的区域出现反射率差异，增强投影效果。
 附图说明
图1是本实用新型其中一种实施方式提供的拼接式投影银幕的整体结构示意图；
图2是图1沿 A-A方向的剖切结构示意图；
图3是图2中C部分的放大结构示意图；
图4是本实用新型另一种实施方式提供的拼接式投影银幕的整体结构示意图；
图5是图4沿D-D方向的剖切结构示意图；
图6是图5中E部分的放大结构示意图；
图7是图1另一个视角的整体结构示意图；
图8是图7沿B-B方向的剖切结构示意图。
在附图中，各附图标记表示：
100、银幕板；200、拼缝；101、反射面；102、背面；300、拼接层；401、第一透声孔；402、第二透声孔；403、第三透声孔；500、粘胶；103、第一侧面；104、第二侧面。
 本发明的实施方式
为了使本实用新型的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本实用新型进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本实用新型，并不用于限定本实用新型。
如图1至图8所示，是本实用新型实施例提供的一种拼接式投影银幕，包括依次排列且相互拼接的至少两块银幕板100，相邻两块银幕板100的侧壁间隔形成拼缝200，银幕板100包括用于反射投影光线的反射面101以及与反射面101相对的背面102，拼接式投影银幕还包括设置在拼缝200处的拼接层300，拼接层300覆盖拼缝200，拼接层300通过粘胶500与背面102粘接。
请参阅图1至图3，银幕板100上与拼接层300的重叠区域开设有多个第一透声孔401，银幕板100上与拼接层300的非重叠区域开设有多个第二透声孔402。由于本实用新型在银幕板100上与拼接层300重叠的区域以及与拼接层300不重叠的区域均设置有透声孔，使得在银幕长时间使用过程中，反射面101上的灰尘在反射面101上的聚集呈现均匀分布的状态，避免银幕板100上与拼接层300重叠的区域以及与拼接层300不重叠的区域出现反射率差异，增强投影效果。
本实施例中，当拼接层300通过粘胶500与银幕板100的背面102胶合时粘胶500渗透入拼缝200内，胶粘500固化后可显著增加拼接层300与银幕板100之间的粘着力，从而增强拼缝200处的强度和抗拉能力，防止拼缝200在银幕使用过程中开裂。另外，粘胶500除了渗透入拼缝200内，还可渗透入第一透声孔401内，可进一步增加拼接层300与银幕板100之间的粘着力，从而进一步增强拼缝200处的强度和抗拉能力。
另外，如图4至图6所示，拼接层300上设置有多个第三透声孔403，第三透声孔403贯穿拼接层300，当拼接层300通过粘胶500与银幕板100的背面102胶合时，粘胶500除了渗透入拼缝200和第一透声孔401内，还渗透入第三透声孔403内，可进一步增加拼接层300与银幕板100之间的粘着力，使得拼接更为牢固。优选地，第三透声孔403与第一透声孔401正对，从而可增强银幕板100的透声效果；当然，第三透声孔403也可以不与第一透声孔401正对。
如图7和图8所示，本实施例的银幕板100包括连接反射面101和背面102且相对的第一侧面103和第二侧面104，第一侧面103和第二侧面104的连线与相邻两块银幕板100的拼接方向垂直，拼接层300自第一侧面103延伸至第二侧面104，拼接层300的两个端面分别与第一侧面103和第二侧面104平齐，可保证拼接层300完全覆盖拼缝200区域，进一步增强拼缝200处的强度和抗拉能力。
本实施例中，拼缝200的宽度小于0.5mm，拼接层300沿相邻两块银幕板100的拼接方向的宽度范围为0.5mm～30mm，即拼接层300的宽度大于拼缝200的宽度，拼缝200的宽度足够小，在保证拼接牢固性的同时，还能避免观众从银幕正面看到拼缝200区域。另外，多个第一透声孔401和多个第二透声孔402贯穿反射面101的总面积为反射面101面积的0.5%～10%。进一步地，多个第一透声孔401和多个第二透声孔402贯穿反射面101的总面积为反射面101面积的4.5%～7%。
综上所述，本实用新型实施例在银幕板100上与拼接层300重叠的区域以及与拼接层300不重叠的区域均设置有透声孔，使得在银幕长时间使用过程中，反射面101上的灰尘在反射面101上的聚集呈现均匀分布的状态，避免银幕板100上与拼接层300重叠的区域以及与拼接层300不重叠的区域出现反射率差异，增强投影效果。
以上所述仅为本实用新型的较佳实施例而已，并不用以限制本实用新型，凡在本实用新型的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本实用新型的保护范围之内。

Claims (9)

  1. 一种拼接式投影银幕，其特征在于，包括依次排列且相互拼接的至少两块银幕板(100)，相邻两块所述银幕板(100)的侧壁间隔形成拼缝(200)，所述银幕板(100)包括用于反射投影光线的反射面(101)以及与所述反射面(101)相对的背面(102)，所述拼接式投影银幕还包括设置在所述拼缝(200)处的拼接层(300)，所述拼接层(300)覆盖所述拼缝(200)，所述拼接层(300)通过粘胶(500)与所述背面(102)粘接；
    所述银幕板(100)上与所述拼接层(300)的重叠区域开设有多个第一透声孔（401），所述银幕板(100)上与所述拼接层(300)的非重叠区域开设有多个第二透声孔(402)。
  2. 如权利要求1所述的拼接式投影银幕，其特征在于，所述粘胶(500)渗透入所述拼缝(200)内。
  3. 如权利要求1所述的拼接式投影银幕，其特征在于，所述第一透声孔(401)和所述第二透声孔(402)在所述银幕板(100)上均匀排布。
  4. 如权利要求1所述的拼接式投影银幕，其特征在于，所述拼接层(300)上设置有多个第三透声孔(403)，所述第三透声孔(403)贯穿所述拼接层(300)。
  5. 如权利要求4所述的拼接式投影银幕，其特征在于，所述粘胶(500)渗透入所述第三透声孔(403)内。
  6. 如权利要求1所述的拼接式投影银幕，其特征在于，所述银幕板(100)包括连接所述反射面(101)和所述背面(102)且相对的第一侧面(103)和第二侧面(104)，所述第一侧面(103)和所述第二侧面(104)的连线与相邻两块所述银幕板(100)的拼接方向垂直，所述拼接层(300)自所述第一侧面(103)延伸至所述第二侧面(104)，所述拼接层(300)的两个端面分别与所述第一侧面(103)和所述第二侧面(104)平齐。
  7. 如权利要求1-6任一项所述的拼接式投影银幕，其特征在于，所述拼缝(200)的宽度小于0.5mm，所述拼接层(300)沿相邻两块所述银幕板(100)的拼接方向的宽度范围为0.5mm～30mm。
  8. 如权利要求1-6任一项所述的拼接式投影银幕，其特征在于，多个所述第一透声孔(401)和多个所述第二透声孔(402)贯穿所述反射面(101)的总面积为所述反射面(101)面积的0.5%～10%。
  9. 如权利要求8所述的拼接式投影银幕，其特征在于，多个所述第一透声孔(401)和多个所述第二透声孔(402)贯穿所述反射面(101)的总面积为所述反射面(101)面积的4.5%～7%。
PCT/CN2021/112245 2021-01-05 2021-08-12 一种拼接式投影银幕 WO2022148017A1 (zh)

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