WO2021203265A1 - 投影幕及投影系统 - Google Patents

投影幕及投影系统 Download PDF

Info

Publication number
WO2021203265A1
WO2021203265A1 PCT/CN2020/083657 CN2020083657W WO2021203265A1 WO 2021203265 A1 WO2021203265 A1 WO 2021203265A1 CN 2020083657 W CN2020083657 W CN 2020083657W WO 2021203265 A1 WO2021203265 A1 WO 2021203265A1
Authority
WO
WIPO (PCT)
Prior art keywords
polarized light
projection
light
projection screen
polarizing
Prior art date
Application number
PCT/CN2020/083657
Other languages
English (en)
French (fr)
Inventor
郭滨刚
Original Assignee
深圳市光科全息技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市光科全息技术有限公司 filed Critical 深圳市光科全息技术有限公司
Priority to PCT/CN2020/083657 priority Critical patent/WO2021203265A1/zh
Priority to CN202080004850.2A priority patent/CN112654923A/zh
Publication of WO2021203265A1 publication Critical patent/WO2021203265A1/zh

Links

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
    • G03B21/604—Polarised screens

Definitions

  • This application relates to the field of projection technology, in particular to a projection screen and a projection system.
  • 3D projection technology is also constantly developing. How to restore the image output by the projector to the greatest extent and get the best visual effect is not only to improve the performance of the projector, but the structure of the 3D projection screen also plays a very important role.
  • metal curtains are commonly used as the choice of 3D projection screens.
  • the metal curtain uses the reflective properties of aluminum and silver to reflect all the projection light, and the reflected light is filtered by 3D glasses, so that the left and right eyes can receive different images respectively. Thereby forming a 3D stereoscopic image in the brain.
  • the polarization characteristics of part of the projection light will change, so the polarized light received by the 3D glasses will be reduced, resulting in poor 3D effects and severely affecting the user experience.
  • the purpose of this application is to provide a projection screen and a projection system when viewing 3D images, so as to solve the current technical problem of poor 3D effects due to the lack of polarization-maintaining effects of some metal screens.
  • a projection screen including:
  • the reflective structure is used to reflect the first polarized light and the second polarized light, the first polarized light and the second polarized light have different polarization directions, and the first polarized light and the second polarized light are in the The projection areas on the reflective structure overlap;
  • the first polarizing structure is formed on one side of the reflective structure, the first polarizing structure has a plurality of first through holes and a plurality of first continuous regions, and the first continuous regions can only pass the first polarized light ;as well as
  • the second polarizing structure is formed on the side of the first polarizing structure away from the reflective structure.
  • the second polarizing structure has a plurality of second through holes facing the first continuous area and a plurality of facing holes. For the second continuous area of the first through hole, the second continuous area can only pass the second polarized light.
  • a projection system comprising: the projection screen as described above;
  • a projection device for emitting the first polarized light and the second polarized light
  • the receiving device is configured to receive the first polarized light and the second polarized light that pass through the second polarizing structure.
  • the first polarizing structure and the second polarizing structure are sequentially arranged on the reflective structure, and the through holes of the first polarizing structure and the second polarizing structure are complementary in position and passing through only different polarized light respectively, so that the projection screen has a protective effect.
  • FIG. 1 is a cross-sectional view of a projection screen in an embodiment of the application.
  • FIG. 2 is a schematic structural diagram of a first polarizing structure in the projection screen shown in FIG. 1.
  • FIG. 3 is a schematic structural diagram of a second polarizing structure in the projection screen shown in FIG. 1.
  • FIG. 4 is a schematic diagram of the assembly of the first polarizing structure and the second polarizing structure in the projection screen shown in FIG. 1.
  • FIG. 5 is a schematic diagram of a projection system in an embodiment of the application.
  • the projection screen 10 provided by the embodiment of the present application is used for viewing 3D images; of course, in other embodiments of the present application, the projection screen 10 can also be used in other devices, equipment, and systems for achieving the polarization maintaining effect. The only limit.
  • a projection screen 10 includes a reflective structure 100, a first polarizing structure 200, and a second polarizing structure 300.
  • the reflective structure 100, the first polarizing structure 200, and the second polarizing structure 300 are stacked one after another.
  • the reflective structure 100, the first polarizing structure 200, and the second polarizing structure 300 may be a split structure, and a laminated structure can be realized by bonding or externally providing a clamping force.
  • the reflective structure 100, the first polarizing structure 200, and the second polarizing structure 300 are an integrated structure.
  • the first polarizing structure 200 is formed on the side of the reflective structure 100.
  • the second polarizing structure 300 is formed on the side of the first polarizing structure 200 away from the reflective structure 100.
  • the reflective structure 100 is used to reflect the first polarized light and the second polarized light.
  • the polarization directions of the first polarized light and the second polarized light are different.
  • the projection areas of the first polarized light and the second polarized light on the reflective structure 100 overlap.
  • the first polarized light and the second polarized light are light carrying images.
  • the first polarizing structure 200 has a plurality of first through holes 210 and a plurality of first continuous regions 220. Adjacent first through holes 210 may be connected by the first continuous area 220.
  • the first continuous area 220 can only pass the first polarized light.
  • the second polarizing structure 300 has a plurality of second through holes 310 facing the first continuous region 220 and a plurality of second continuous regions 320 facing the first through hole 210. Adjacent second through holes 310 may be connected by the second continuous area 320. The second continuous area 320 can only pass the second polarized light.
  • the second through hole 310 has the same shape and size as the first continuous area 220, and the second continuous area 320 has the same shape and size as the first through hole 210. In this way, the through holes and continuous areas on the first polarizing structure 200 and the second polarizing structure 300 are complementary.
  • the first continuous area 220 and the second continuous area 320 have a film structure, a sheet structure or a layered structure.
  • the film structure is one of an iodine-based polarizing film, a polyethylene polarizing film, a dye-based polarizing film, or a metal polarizing film.
  • the iodine-based polarizing film absorbs iodine molecules on the PVA and stretches it to make it polarized.
  • Polyethylene polarizing film uses acid as a catalyst to dehydrate PVA, so that a certain amount of ethylene structure is contained in the PVA molecule, and then it is stretched and oriented to make it polarized.
  • the dye-based polarizing film absorbs the dichroic organic dye on the PVA and stretches it to make it polarized.
  • the metal polarizing film is to adsorb the metal salt on the polymer film.
  • the polarizing material is combined with a polymer film (such as polyethylene film, etc.) through a process such as directional stretching, or nanoimprinting, etching, and photolithography are used to form a specific surface plasma characteristic on the polymer film.
  • the periodic nanostructures with selective polarization properties (such as rectangular nanostructures, elliptical nanostructures) form a polarizing film.
  • Polarized materials are mainly dichroic dyes and metamaterials.
  • Dichroic dyes have high dichroism, uniform dyeing characteristics, excellent moisture and heat resistance, and have a strong affinity for the polymer to be dyed. When there is no change in hue and fuel sublimation, it mainly includes iodine-based dyes and dye-based dyes.
  • the dye-based dyes are cyanines, styrenes, azos, anthraquinones, quinones, perylenes, indigo, four Oxazines, metal salt dyes or stilbene dyes, etc.
  • Metamaterials are artificially designed nanocrystalline structure materials with periodic characteristics of polarized light. Periodic nanostructures have selective polarized light properties due to the characteristics of surface plasmons.
  • Metamaterials are photonic crystals, metasurfaces, or chiral metamaterials.
  • the first through hole 210 is formed on the first polarizing structure 200 by a precision instrument, such as a laser drilling machine or etching
  • the second through hole 310 is formed on the first polarizing structure 200 by a precision instrument, such as a laser drilling machine or etching.
  • the method is formed on the second polarizing structure 300.
  • the reflective structure 100 is a metal reflective film, a total dielectric reflective film, or a metal curtain.
  • the first through holes 210 and the first continuous regions 220 are alternately arranged.
  • the first through hole 210 and the first continuous region 220 form a mosaic structure on the first polarizing structure 200.
  • the second polarizing structure 300 has a plurality of second through holes 310 facing the first continuous region 220 and a plurality of second continuous regions 320 facing the first through hole 210.
  • the second through hole 310 and the second continuous area 320 also form a mosaic structure on the second polarizing structure 300. Further, the shape and size of the first through hole 210 and the first continuous area 220 are consistent.
  • the shape and size of the second through hole 310 and the second continuous area 320 are the same. That is, the shapes and sizes of the first through hole 210, the first continuous area 220, the second through hole 310, and the second continuous area 320 are all the same.
  • the shape of the first through hole 210 is a square. The side length of the square ranges from 0.3mm to 10mm. In order to form a pixel structure, the 3D picture is clearer and the effect is more obvious.
  • the thickness of the first continuous area 220 and the second continuous area 320 ranges from 0.02 mm to 0.2 mm.
  • first polarized light and the second polarized light are respectively one of S-polarized light and P-polarized light, or the first polarized light and the second polarized light are respectively one of left-handed polarized light and right-handed polarized light.
  • the first continuous area 220 can only pass the first polarized light
  • the second continuous area 320 can only pass the second polarized light. That is, the first polarized light is S polarized light, and the second polarized light is P polarized light. Or the first polarized light is P polarized light, and the second polarized light is S polarized light. Or the first polarized light is left-handed polarized light, and the second polarized light is right-handed polarized light.
  • the first polarized light is right-handed polarized light
  • the second polarized light is left-handed polarized light.
  • the second continuous area 320 passes right-handed polarized light
  • left-handed polarized light and right-handed polarized light pass through the second through hole 310.
  • the continuous area 220 receives the left-handed polarized light and the right-handed polarized light passing through the second through hole 310 and passes through the left-handed polarized light
  • the right-handed polarized light passing through the second continuous area 320 passes through the first through hole 210.
  • the left-handed polarized light and the right-handed polarized light after passing through the first polarizing structure 200 are reflected by the reflective structure 100, filtered by the first polarizing structure 200 and the second polarizing structure 300, and then emitted through the second polarizing structure 300.
  • the projection screen 10 Utilizing the characteristics of the through holes of the first polarizing structure 200 and the second polarizing structure 300 that the positions are complementary and only pass different polarized light respectively, the projection screen 10 has the advantages of polarization maintaining effect, high gain, wide viewing angle, and high stereo contrast.
  • the reflective structure 100 when polarized light strikes the projection screen 10, it is reflected by the reflective structure 100, and its polarization characteristics are changed, which will reduce the amount of polarized light that can pass through receiving devices such as 3D glasses, thereby affecting the user’s sense of 3D experience and increasing After the polarization structure, the polarization characteristics of the reflected light can be ensured, thereby enhancing the user experience, so it has a polarization maintaining effect.
  • the reflective structure 100 has high reflectivity and high reflected light brightness, so the projection screen 10 also has the characteristics of high gain.
  • the reflective structure 100 in this embodiment especially when the reflective structure 100 is a metal screen, technically uses the principle of diffuse reflection of light to perform a special surface treatment on the metal aluminum foil, so that the screen surface is smooth and clean, and can eliminate 90% of the Stray light, with high contrast and anti-interference ability of ambient light, even in a bright indoor environment, it can still maintain bright colors and clear images, so the projection screen 10 also has high stereo contrast.
  • a diffusion layer can also be compounded between the reflective structure 100 and the first polarizing structure 200.
  • the diffusion layer is a diffusion film, a matte film, etc.
  • the haze of the diffusion layer is 8-15
  • the light transmittance is greater than More than 90%, due to the diffusibility of the diffusion layer, the viewing angle of the projection screen 10 can be further increased, so that the projection screen 10 has a wide viewing angle.
  • the reflective structure 100 can be formed on a flexible carrier, which can realize the folding or curling of the projection screen 10, which is convenient to carry.
  • the projection screen 10 can be formed into a curved structure or a ring structure to adapt to different scenes.
  • the reflective structure 100 may be formed on a plate-shaped rigid structure, which has a moving part to facilitate the overall movement of the projection screen 10 and place it in different positions to adapt to different scenes.
  • An embodiment of the present application also provides a projection system, including: a projection device, a receiving device, and the above-mentioned projection screen 10.
  • the projection device is used to emit the first polarized light 20 and the second polarized light 30.
  • the receiving device is used to receive the first polarized light 20 and the second polarized light 30 passing through the second polarizing structure 300. Take the first polarized light 20 as left-handed polarized light and the second polarized light 30 as right-handed polarized light as an example.
  • the projection device includes two projectors 40, which respectively emit left-handed polarized light and right-handed polarized light.
  • the second continuous area 320 passes right-handed polarized light, left-handed polarized light and right-handed polarized light pass through the second through hole 310, and the first continuous area 220 receives the left-handed polarized light and right-handed polarized light passing through the second through hole 310 and passes through the left-handed polarized light.
  • Polarized light, the right-handed polarized light passing through the second continuous area 320 passes through the first through hole 210.
  • the left-handed polarized light and the right-handed polarized light after passing through the first polarizing structure 200 are reflected by the reflective structure 100, filtered by the first polarizing structure 200 and the second polarizing structure 300, and then emitted through the second polarizing structure 300.
  • Two different images are formed through the second polarizing structure 300, that is, an image formed by left-handed polarized light and an image formed by right-handed polarized light.
  • the propagation directions of the first polarized light 20 and the second polarized light 30 are symmetrical with respect to the projection area 50.
  • two projectors 40 are located on the left and right sides of the projection screen 10. It can be understood that in other embodiments, the two projectors 40 may also be located on the upper and lower sides of the projection screen 10.
  • the number of projectors 40 or other projection devices can also be two or more, and they are evenly distributed in the circumferential direction of the projection screen 10.
  • the receiving device includes a first light-transmitting structure and a second light-transmitting structure.
  • the first light-transmitting structure and the second light-transmitting structure are arranged in front of the left eye and the right eye of a person in a one-to-one correspondence.
  • the first light-transmitting structure and the second light-transmitting structure can transmit only one of the first polarized light 20 and the second polarized light 30, respectively.
  • the receiving device is 3D glasses.
  • the first light-transmitting structure and the second light-transmitting structure are polarizers. It is again taken as an example that the first polarized light 20 is left-handed polarized light, and the second polarized light 30 is right-handed polarized light.
  • the first light-transmitting structure can only transmit left-handed polarized light
  • the second light-transmitting structure can only transmit right-handed polarized light.
  • Two different images are formed through the second polarizing structure 300, that is, an image formed by left-handed polarized light and an image formed by right-handed polarized light.
  • the left eye receives the left-handed polarized light and the right eye receives the right-handed polarized light.
  • the brain automatically synthesizes the images received by the left and right eyes into a 3D image, which improves the stereoscopic 3D display effect.
  • the projection system provided by the present application adopts the above-mentioned projection screen 10, and thus also has the beneficial effects of the above-mentioned projection screen 10, which will not be repeated here.

Abstract

本申请公开了一种投影幕及投影系统。该投影幕包括反射结构，用于反射第一偏振光和第二偏振光，第一偏振光和第二偏振光的偏振方向不同，第一偏振光和第二偏振光在反射结构上的投影区重合；第一偏光结构，形成于反射结构一侧，第一偏光结构具有多个第一通孔和多个第一连续区域，第一连续区域只能通过第一偏振光；以及第二偏光结构，形成于第一偏光结构远离反射结构的一侧，第二偏光结构具有多个正对第一连续区域的第二通孔以及多个正对第一通孔的第二连续区域，第二连续区域只能通过第二偏振光。上述投影幕利用通孔位置互补且分别只通过不同偏振光的特点，使得其具有保偏效果、高增益、宽可视角、高立体对比度等优点。

Description

投影幕及投影系统 技术领域
本申请涉及投影技术领域，尤其涉及一种投影幕及投影系统。
 背景技术
目前，随着3D技术的不断发展，3D投影技术也在不断发展。如何将投影机输出的影像最大限度的还原出来，得到最好的视觉效果，不仅是要提高投影机性能，同样3D投影幕的结构也起到十分重要的作用。
 技术问题
现有技术中常用金属幕布作为3D投影幕的选择，金属幕布是利用铝银等金属反光的特性将投影光线全部反射回来，反射回来的光线经过3D眼镜过滤，使得左右眼分别接收不同的画面，从而在大脑形成3D立体画面感。投影光投射到金属幕布上时，部分投影光线的偏振特性会发生改变，因此3D眼镜接收到的偏振光线会减少，导致3D效果差，严重影响用户体验。
 技术解决方案
本申请的目的在于在观看3D画面时，提供一种投影幕及投影系统，以解决目前部分金属幕布不具有保偏效果导致3D效果差的技术问题。
为了解决上述技术问题，本申请采用的技术方案一为：
一种投影幕，包括：
反射结构，用于反射第一偏振光和第二偏振光，所述第一偏振光和所述第二偏振光的偏振方向不同，所述第一偏振光和所述第二偏振光在所述反射结构上的投影区重合；
第一偏光结构，形成于所述反射结构一侧，所述第一偏光结构具有多个第一通孔和多个第一连续区域，所述第一连续区域只能通过所述第一偏振光；以及
第二偏光结构，形成于所述第一偏光结构远离所述反射结构的一侧，所述第二偏光结构具有多个正对所述第一连续区域的第二通孔以及多个正对所述第一通孔的第二连续区域，所述第二连续区域只能通过所述第二偏振光。
为了解决上述技术问题，本申请采用的技术方案二为：
一种投影系统，包括：如上述所述的投影幕；
投影设备，用于发出所述第一偏振光和所述第二偏振光；以及
接收设备，用于接收透过所述第二偏光结构的所述第一偏振光和所述第二偏振光。
 有益效果
实施本申请实施例，将具有如下有益效果：
上述投影幕，在反射结构上依次设置第一偏光结构和第二偏光结构，利用第一偏光结构和第二偏光结构的通孔位置互补且分别只通过不同偏振光的特点，使得投影幕具有保偏效果、高增益、宽可视角、高立体对比度等优点。
 附图说明
为了更清楚地说明本申请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申请的一些实施例，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，还可以根据这些附图获得其他的附图。
其中：
图1为本申请一实施例中投影幕的剖视图。
图2为图1所示投影幕中第一偏光结构的结构示意图。
图3为图1所示投影幕中第二偏光结构的结构示意图。
图4为图1所示投影幕中第一偏光结构和第二偏光结构的装配示意图。
图5为本申请一实施例中投影系统的示意图。
 本发明的实施方式
下面将结合本申请实施例中的附图，对本申请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申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，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例，都属于本申请保护的范围。
本申请实施例提供的投影幕10用于观看3D画面；当然在本申请的其他实施例中，该投影幕10还能够用于其他为实现保偏效果的装置、设备和系统中，此处不作唯一限定。
请一并结合图1至图4，现对本申请提供的投影幕10进行说明。一种投影幕10，包括反射结构100、第一偏光结构200和第二偏光结构300。本实施例中，反射结构100、第一偏光结构200和第二偏光结构300为依次叠层设置。反射结构100、第一偏光结构200和第二偏光结构300可以为分体式结构，通过粘结或者外部提供夹持力实现叠层结构。或者，反射结构100、第一偏光结构200和第二偏光结构300为一体式结构。具体地，第一偏光结构200形成于反射结构100一侧。第二偏光结构300形成于第一偏光结构200远离反射结构100的一侧。
进一步地，反射结构100用于反射第一偏振光和第二偏振光。第一偏振光和第二偏振光的偏振方向不同。第一偏振光和第二偏振光在反射结构100上的投影区重合。本实施例中，第一偏振光和第二偏振光为载有影像的光。进一步地，第一偏光结构200具有多个第一通孔210和多个第一连续区域220。相邻第一通孔210可由第一连续区域220连接。第一连续区域220只能通过第一偏振光。第二偏光结构300具有多个正对第一连续区域220的第二通孔310以及多个正对第一通孔210的第二连续区域320。相邻第二通孔310可由第二连续区域320连接。第二连续区域320只能通过第二偏振光。本实施例中，第二通孔310与第一连续区域220的形状和尺寸一致，第二连续区域320与第一通孔210的形状和尺寸一致。以使得第一偏光结构200和第二偏光结构300上的通孔和连续区域形成互补。
本实施例中，第一连续区域220和第二连续区域320为膜结构、片状结构或层状结构。具体地，膜结构为碘系偏光膜、聚乙烯偏光膜、染料系偏光膜或金属偏光膜中的一种。碘系偏光膜为将碘分子吸着在PVA上，并加以延伸，使之具有偏旋光性。聚乙烯偏光膜为用酸做触媒，将PVA脱水，使PVA分子中含一定量乙烯结构，再加以延伸定向，使之具有偏旋光性。染料系偏光膜将具有二色性的有机染料吸着在PVA上，并加以延伸定向，使之具有偏旋光性。金属偏光膜为将金属盐吸附在高分子薄膜。将偏光材料通过定向拉伸等工艺将偏光材料与高分子薄膜（如聚乙烯薄膜等）结合，或者在高分子薄膜上通过纳米压印，刻蚀，光刻的方式形成特定的由于表面等离子特性而具备选择偏振光性质的周期性纳米结构（如长方形纳米结构、椭圆形纳米结构）形成偏光膜。偏光材料主要为二色性染料和超材料，二色性染料具有高的二色性、均匀的染色特性、优良的耐湿热特性、对所要染色的聚合物有很强的亲和性，在加热时，色相不发生变化及燃料升华等，主要包括碘系染料和染料系染料，染料系染料为菁类、苯乙烯类、偶氮类、蒽醌类、醌类、苝类、靛蓝类、四嗪类、金属盐类染料或芪类染料等。超材料为一种人为设计的具有偏振光性质的周期性特征的纳米微晶结构材料，周期性纳米结构是由于表面等离子特性而具备选择偏振光性质。超材料为光子晶体、超表面或手性超材料等。本实施例中，第一通孔210通过精密仪器，如激光打孔机或刻蚀的方式形成于第一偏光结构200上，第二通孔310通过精密仪器，如激光打孔机或刻蚀的方式形成于第二偏光结构300上。本实施例中，反射结构100为金属反射膜、全电介质反射膜或金属幕。
请一并结合图2和图3，在行方向和列方向，第一通孔210和第一连续区域220均交替设置。使得第一通孔210和第一连续区域220在第一偏光结构200上形成马赛克结构。同样的，由于第二偏光结构300具有多个正对第一连续区域220的第二通孔310以及多个正对第一通孔210的第二连续区域320。第二通孔310和第二连续区域320在第二偏光结构300上也形成马赛克结构。进一步地，第一通孔210与第一连续区域220的形状和尺寸一致。同样的，第二通孔310与第二连续区域320的形状和尺寸一致。即第一通孔210、第一连续区域220、第二通孔310和第二连续区域320的形状和尺寸均一致。本实施例中，第一通孔210的形状为正方形。正方形的边长范围为0.3mm~10mm。以形成像素点结构，使得3D画面更清晰，效果更明显。本实施例中，第一连续区域220和第二连续区域320的厚度范围为0.02mm~0.2mm。
进一步地，第一偏振光和第二偏振光分别为S偏振光、P偏振光中的一种，或第一偏振光和第二偏振光分别为左旋偏振光、右旋偏振光中的一种。第一连续区域220只能通过第一偏振光，第二连续区域320只能通过第二偏振光。即第一偏振光为S偏振光，第二偏振光为P偏振光。或者第一偏振光为P偏振光，第二偏振光为S偏振光。或者第一偏振光为左旋偏振光，第二偏振光为右旋偏振光。或者第一偏振光为右旋偏振光，第二偏振光为左旋偏振光。以第一偏振光为左旋偏振光，第二偏振光为右旋偏振光为例，第二连续区域320通过右旋偏振光，左旋偏振光和右旋偏振光经过第二通孔310，第一连续区域220接收经过第二通孔310的左旋偏振光和右旋偏振光并通过左旋偏振光，通过第二连续区域320的右旋偏振光经过第一通孔210。经过第一偏光结构200后的左旋偏振光和右旋偏振光被反射结构100反射再次经过第一偏光结构200和第二偏光结构300筛选后透过第二偏光结构300射出。利用第一偏光结构200和第二偏光结构300的通孔位置互补且分别只通过不同偏振光的特点，使得投影幕10具有保偏效果、高增益、宽可视角、高立体对比度等优点。具体地，当偏振光射向投影幕10时，被反射结构100反射，其偏振特性发生改变，会导致能够通过3D眼镜等接收设备的偏振光减少，进而影响用户的3D体验感，而增加了偏光结构之后可以保证反射光的偏振特性，进而增强用户的体验感，所以具有保偏效果。反射结构100具有高反射率，反射光亮度高，所以投影幕10同样具有高增益的特点。本实施中的反射结构100，尤其当反射结构100为金属幕时，金属幕在技术上利用光的漫反射原理，对金属铝箔进行特殊的表面处理，幕面平整光洁，同时能够排除90%的杂光，具备高对比度和抗环境光干扰能力，即使在室内明亮的环境下，依然能保持鲜艳的色彩和清晰的影像，因此投影幕10同样具有高立体对比度。本实施例中，还可在反射结构100和第一偏光结构200之间复合一层扩散层，扩散层为扩散膜、哑光膜等，扩散层的雾度为8~15，透光率大于90%以上，由于扩散层的扩散性，可进一步提高投影幕10可视角度，使投影幕10具有宽可视角。
进一步地，反射结构100可形成于柔性载体上，可实现投影幕10折叠或卷曲，方便携带的同时，投影幕10可形成曲面结构或环形结构，以适应于不同场景。或者，反射结构100可形成于板状刚性结构上，板状刚性结构具有移动部，方便投影幕10整体移动，放置在不同位置，以适应于不同场景。
请一并结合图1至图5，本申请实施例还提供一种投影系统，包括：投影设备、接收设备和上述投影幕10。投影设备用于发出第一偏振光20和第二偏振光30。接收设备用于接收透过第二偏光结构300的第一偏振光20和第二偏振光30。以第一偏振光20为左旋偏振光，第二偏振光30为右旋偏振光为例。投影设备包括两台投影机40，分别发出左旋偏振光和右旋偏振光。第二连续区域320通过右旋偏振光，左旋偏振光和右旋偏振光经过第二通孔310，第一连续区域220接收经过第二通孔310的左旋偏振光和右旋偏振光并通过左旋偏振光，通过第二连续区域320的右旋偏振光经过第一通孔210。经过第一偏光结构200后的左旋偏振光和右旋偏振光被反射结构100反射再次经过第一偏光结构200和第二偏光结构300筛选后透过第二偏光结构300射出。透过第二偏光结构300形成两种不完全相同的图像，即由左旋偏振光形成的图像和右旋偏振光形成的图像。
进一步地，第一偏振光20和第二偏振光30的传播方向关于投影区50对称。本实施例中，两台投影机40位于投影幕10的左右两侧。可以理解为在其他实施例中，两台投影机40也可以位于投影幕10的上下两侧。另外，投影机40或其他投影装置的数量也可以为两个以上，且均匀分布在投影幕10周向上。
进一步地，接收设备包括第一透光结构和第二透光结构。第一透光结构和第二透光结构一一对应设置于人的左眼和右眼前方。第一透光结构和第二透光结构分别只能够透过第一偏振光20、第二偏振光30中的一种。本实施例中，接收设备为3D眼镜。具体地，第一透光结构和第二透光结构为偏振片。还是以第一偏振光20为左旋偏振光，第二偏振光30为右旋偏振光为例。本实施例中，第一透光结构只能够透过左旋偏振光，第二透光结构只能够透过右旋偏振光。透过第二偏光结构300形成两种不完全相同的图像，即由左旋偏振光形成的图像和右旋偏振光形成的图像。左眼接收左旋偏振光，右眼接收右旋偏振光，大脑自动将左右眼接受的画面合成3D画面，提高了立体3D显示效果。
本申请提供的投影系统，采用了上述投影幕10，因而也具备上述投影幕10所具备的有益效果，此处不再赘述。
以上所揭露的仅为本申请较佳实施例而已，当然不能以此来限定本申请之权利范围，因此依本申请权利要求所作的等同变化，仍属本申请所涵盖的范围。

Claims (10)

  1. 一种投影幕，其特征在于，包括：
    反射结构，用于反射第一偏振光和第二偏振光，所述第一偏振光和所述第二偏振光的偏振方向不同，所述第一偏振光和所述第二偏振光在所述反射结构上的投影区重合；
    第一偏光结构，形成于所述反射结构一侧，所述第一偏光结构具有多个第一通孔和多个第一连续区域，所述第一连续区域只能通过所述第一偏振光；以及
    第二偏光结构，形成于所述第一偏光结构远离所述反射结构的一侧，所述第二偏光结构具有多个正对所述第一连续区域的第二通孔以及多个正对所述第一通孔的第二连续区域，所述第二连续区域只能通过所述第二偏振光。
  2. 根据权利要求1所述的投影幕，其特征在于，在行方向和列方向，所述第一通孔和所述第一连续区域均交替设置。
  3. 根据权利要求2所述的投影幕，其特征在于，所述第一通孔与所述第一连续区域的形状和尺寸一致。
  4. 根据权利要求3所述的投影幕，其特征在于，所述第二通孔与所述第一连续区域的形状和尺寸一致，所述第二连续区域与所述第一通孔的形状和尺寸一致。
  5. 根据权利要求1~4任一权利要求所述的投影幕，其特征在于，所述第一偏振光和所述第二偏振光分别为S偏振光、P偏振光中的一种，或所述第一偏振光和所述第二偏振光分别为左旋偏振光、右旋偏振光中的一种。
  6. 根据权利要求5所述的投影幕，其特征在于，所述第一通孔的形状为正方形，所述正方形的边长范围为0.3mm~10mm。
  7. 根据权利要求6所述的投影系统，其特征在于，所述反射结构为金属反射膜、全电介质反射膜或金属幕。
  8. 一种投影系统，其特征在于，包括：如权利要求1~7任一权利要求所述的投影幕；
    投影设备，用于发出所述第一偏振光和所述第二偏振光；以及
    接收设备，用于接收透过所述第二偏光结构的所述第一偏振光和所述第二偏振光。
  9. 根据权利要求8所述的投影系统，其特征在于，所述第一偏振光和所述第二偏振光的传播方向关于所述投影区对称。
  10. 根据权利要求9所述的投影系统，其特征在于，所述接收设备包括第一透光结构和第二透光结构，所述第一透光结构和所述第二透光结构一一对应设置于人的左眼和右眼前方，所述第一透光结构和所述第二透光结构分别只能够透过所述第一偏振光、所述第二偏振光中的一种。
PCT/CN2020/083657 2020-04-08 2020-04-08 投影幕及投影系统 WO2021203265A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2020/083657 WO2021203265A1 (zh) 2020-04-08 2020-04-08 投影幕及投影系统
CN202080004850.2A CN112654923A (zh) 2020-04-08 2020-04-08 投影幕及投影系统

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2020/083657 WO2021203265A1 (zh) 2020-04-08 2020-04-08 投影幕及投影系统

Publications (1)

Publication Number Publication Date
WO2021203265A1 true WO2021203265A1 (zh) 2021-10-14

Family

ID=75368400

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/083657 WO2021203265A1 (zh) 2020-04-08 2020-04-08 投影幕及投影系统

Country Status (2)

Country Link
CN (1) CN112654923A (zh)
WO (1) WO2021203265A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113741135A (zh) * 2021-09-27 2021-12-03 青岛海信激光显示股份有限公司 一种投影屏幕及投影装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1645186A (zh) * 2005-02-03 2005-07-27 四川大学 大屏幕三维立体液晶投影显示装置
CN101738737A (zh) * 2008-11-17 2010-06-16 纬创资通股份有限公司 用来呈现立体影像的投影系统及其方法
CN102854736A (zh) * 2011-07-01 2013-01-02 精工爱普生株式会社 屏幕
CN105242342A (zh) * 2015-11-09 2016-01-13 武汉华星光电技术有限公司 偏光板和透明显示器
US10151932B1 (en) * 2017-09-01 2018-12-11 Volfoni R&D Stereoscopic three dimensional projection system using elliptical polarization

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0142032B1 (ko) * 1993-09-24 1998-07-01 마쓰오 히로또 편광 스크린
JPH10160932A (ja) * 1996-11-27 1998-06-19 Sharp Corp 偏光素子およびその製造方法
US6064521A (en) * 1997-05-14 2000-05-16 Burke; Douglas Polarizing resonant scattering three dimensional image screen and display systems
CN2514364Y (zh) * 2001-08-31 2002-10-02 陈定万 平面动态图象投影的立体转换装置
CN1813204A (zh) * 2003-07-17 2006-08-02 日东电工株式会社 液晶投影系统
JP4749011B2 (ja) * 2004-04-09 2011-08-17 直史 山内 スクリーン及びこれを用いた画像投影システム
TWI243960B (en) * 2004-06-25 2005-11-21 Ind Tech Res Inst The autostereoscopic projection screen
JP4903376B2 (ja) * 2004-09-14 2012-03-28 直史 山内 スクリーン及び画像投影システム
KR100852758B1 (ko) * 2006-09-14 2008-08-18 한국과학기술연구원 영상 디스플레이 장치
US8474980B2 (en) * 2010-06-28 2013-07-02 Industrial Technology Research Institute Projection autostereoscopic display and stereo screen
WO2012031405A1 (zh) * 2010-09-10 2012-03-15 青岛海信信芯科技有限公司 立体投影方法及系统、电视机
CN103165037A (zh) * 2013-03-21 2013-06-19 锡勇刚 偏振式立体led显示屏
CN204287722U (zh) * 2014-12-26 2015-04-22 海信集团有限公司 超短焦激光投影显示屏幕和超短焦激光投影设备
CN105785703B (zh) * 2014-12-26 2018-07-10 海信集团有限公司 超短焦激光投影显示屏幕和超短焦激光投影设备

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1645186A (zh) * 2005-02-03 2005-07-27 四川大学 大屏幕三维立体液晶投影显示装置
CN101738737A (zh) * 2008-11-17 2010-06-16 纬创资通股份有限公司 用来呈现立体影像的投影系统及其方法
CN102854736A (zh) * 2011-07-01 2013-01-02 精工爱普生株式会社 屏幕
CN105242342A (zh) * 2015-11-09 2016-01-13 武汉华星光电技术有限公司 偏光板和透明显示器
US10151932B1 (en) * 2017-09-01 2018-12-11 Volfoni R&D Stereoscopic three dimensional projection system using elliptical polarization

Also Published As

Publication number Publication date
CN112654923A (zh) 2021-04-13

Similar Documents

Publication Publication Date Title
CN103688211B (zh) 偏振补偿立体系统
CA2485672A1 (en) Projection display system
TWI768090B (zh) 光學系統及顯示裝置
JP3881175B2 (ja) 液晶プロジェクタ用支持体付カラー偏光板及びカラー液晶プロジェクタ
TWI248549B (en) Liquid crystal projection system
JP2023058484A (ja) 部屋
JP2009139593A (ja) 立体画像表示装置および位相差板
WO2021203265A1 (zh) 投影幕及投影系统
JP5833847B2 (ja) 立体画像表示システム
JP4212562B2 (ja) 投射型スクリーンおよび画像投影システム
JP6855368B2 (ja) 画像生成方法および画像合成方法
WO2001090808A1 (fr) Procede pour ameliorer le rapport de contraste d'un projecteur a cristaux liquides
JP7267123B2 (ja) 画像生成システム用光学フィルムのセット
WO2021203264A1 (zh) 显示屏及显示系统
JP4341873B2 (ja) カラー液晶プロジェクタ用ｙａｇ基板付き偏光板および位相差板およびｙａｇ基板製偏光ビームスプリッター
JP2000314809A (ja) カラー液晶プロジェクタ用サファイアガラス板付き偏光板
US20030025862A1 (en) Liquid crystal projector
WO2017128747A1 (zh) 显示面板、偏光片及显示装置
TW201821861A (zh) 頭戴式顯示裝置
JP7267122B2 (ja) 画像生成システム用光学フィルムのセット
WO2016068011A1 (ja) ミラーディスプレイ
TWI442097B (zh) 用於一投影裝置之極化轉換元件組及投影裝置
TWI510812B (zh) 3d影像顯示裝置組
TW201109788A (en) Filter unit and its related manufacturing method, and display panel and display apparatus thereof
JP2003255129A (ja) 偏光変換素子及び投射型液晶表示装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20930372

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20930372

Country of ref document: EP

Kind code of ref document: A1