CN108303847B - Transparent screen, projection screen and projection display system - Google Patents
Transparent screen, projection screen and projection display system Download PDFInfo
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- CN108303847B CN108303847B CN201810330219.6A CN201810330219A CN108303847B CN 108303847 B CN108303847 B CN 108303847B CN 201810330219 A CN201810330219 A CN 201810330219A CN 108303847 B CN108303847 B CN 108303847B
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- projection
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- 239000000463 material Substances 0.000 claims description 12
- 239000004973 liquid crystal related substance Substances 0.000 claims description 10
- 239000011521 glass Substances 0.000 claims description 4
- 230000035515 penetration Effects 0.000 claims 6
- 230000000149 penetrating effect Effects 0.000 abstract description 23
- 238000002834 transmittance Methods 0.000 abstract description 5
- 239000011358 absorbing material Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 7
- 238000003384 imaging method Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000031700 light absorption Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- QVFWZNCVPCJQOP-UHFFFAOYSA-N chloralodol Chemical compound CC(O)(C)CC(C)OC(O)C(Cl)(Cl)Cl QVFWZNCVPCJQOP-UHFFFAOYSA-N 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005685 electric field effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 108020001568 subdomains Proteins 0.000 description 1
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
- G03B21/62—Translucent screens
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transforming Electric Information Into Light Information (AREA)
- Overhead Projectors And Projection Screens (AREA)
Abstract
本专利申请的透光幕、投影幕及投影显示系统，透光幕包括：本体，其一侧外表面为光反射型的显示面以用于显示图像，其另一侧为设有深色吸光材料的吸光面用于吸收照射在所述吸光面的光线；多个穿透部，穿透所述本体地设置于所述显示面；其中，所述多个穿透部在显示面上分布的密度在30%‑80%之间，如此有效解决了正面投影显示高对比度显示问题，并且，也可以解决正面、背面观看时均达到高透过率问题。
The light-transmitting screen, projection screen and projection display system of the present patent application, the light-transmitting screen comprises: a main body, one side of which is a light-reflecting display surface for displaying images, and the other side is a light-absorbing surface provided with a dark light-absorbing material for absorbing light irradiated on the light-absorbing surface; a plurality of penetrating portions, which are arranged on the display surface so as to penetrate the main body; wherein the density of distribution of the plurality of penetrating portions on the display surface is between 30% and 80%, thereby effectively solving the problem of high-contrast display of front projection display, and also solving the problem of achieving high transmittance when viewing from the front and back.
Description
Technical Field
The present application relates to the field of projection imaging technology, and more particularly, to a light-transmitting screen, a projection screen, and a projection display system.
Background
The principle of forward projection is that a person and a projector are positioned on the same side, a projection picture is projected on the surface of a forward projection screen, and the picture can be watched by human eyes after being reflected into human eyes. Limited by the special installation mode of forward projection imaging, a viewer cannot watch things on the back of a screen through a reflection screen, and a projection imaging device with high transmission and high contrast display is lacking in the market at present.
The subway shielding door advertisement display is not widely popularized at present because the requirement of a subway security system is limited, the shielding door advertisement is not popular, the surface of the shielding door is left with a blank or only a safety warning mark is pasted, and the blank transparent area exceeds 85 percent and cannot be effectively applied.
In addition, the problems of safety of the shielding doors when the subway enters or exits are not considered in the schemes, users inside and outside the train cannot see each other in a projection state, and only can see each other when the shielding doors are opened, and when people flow is crowded, the common people impact on the people flow at the moment of opening the shielding doors is not enough to react to avoid danger, so that accidents are easy to occur.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present application is to provide a light-transmitting screen, a projection screen and a projection display system, which solve the problems of the prior art.
In order to achieve the above and other related objects, the present application provides a light-transmitting screen, which comprises a main body, a plurality of penetrating parts, and a plurality of light-transmitting parts, wherein the outer surface of one side of the main body is a light-reflecting display surface for displaying images, the other side of the main body is a light-absorbing surface provided with a dark light-absorbing material for absorbing light rays irradiated on the light-absorbing surface, the penetrating parts penetrate through the main body and are arranged on the display surface, and the density of the penetrating parts distributed on the display surface is between 30% and 80%.
In an embodiment of the present application, the light reflective display surface is coated with a projection reflective material.
In an embodiment of the present application, the RGB color intensity values of the color of the dark material are selected from the range of R <220, G <220, B <220.
In one embodiment of the present application, the dark material is black.
In an embodiment of the present application, the plurality of penetrating portions are holes.
In an embodiment of the present application, a surface gain of the light reflection type display surface is more than 1 time.
In an embodiment of the present application, the plurality of penetrating portions are uniformly distributed on the display surface.
In an embodiment of the present application, the plurality of penetrating portions are distributed in an array on the display surface.
In order to achieve the above and other related objects, the present application provides a projection screen, which includes the light-transmitting screen and a light-adjusting screen attached to the back of the display surface of the light-transmitting screen, wherein the transparency of the light-adjusting screen is adjustable.
In an embodiment of the present application, the light modulation curtain is liquid crystal glass.
To achieve the above and other objects, there is provided a projection display system including the light-transmitting screen or the projection screen, and a projection device.
In order to achieve the above and other related objects, the present application provides a projection display system, which includes a projection screen, and a projection device, wherein the projection screen is covered on one side of a subway shield door corresponding to a dock area, so that the display surface is arranged towards the dock area, and the projection device is arranged in the dock area, and the projection direction of the projection device is arranged towards the display surface.
In an embodiment of the present application, the projection display system includes a light-modulating screen controller electrically connected to the light-modulating screen and communicatively connected to a sensing device for sensing the entrance and exit of a subway train and generating corresponding electrical signals.
In an embodiment of the present application, the projection device is disposed above the subway shield door.
In an embodiment of the present application, the projection device is disposed above the subway shield door through a lifting bracket.
In an embodiment of the present application, the projection device is a laser projector.
In an embodiment of the present application, the projection device is an ultrashort focal projector, and the projection ratio is less than 0.5:1.
As described above, the light-transmitting curtain, the projection curtain and the projection display system comprise a body, wherein the outer surface of one side of the body is provided with a light reflection type display surface for displaying images, the other side of the body is provided with a light absorption surface provided with a dark light absorption material for absorbing light rays irradiated on the light absorption surface, and a plurality of penetrating parts penetrate through the body and are arranged on the display surface, wherein the density of the plurality of penetrating parts distributed on the display surface is between 30% and 80%, so that the problem of high contrast display of front projection display is effectively solved, and the problem of high transmittance when both the front and the back are watched is also solved.
Drawings
Fig. 1 is a schematic view of a front surface of a light-transmitting screen according to an embodiment of the present application.
Fig. 2 is a schematic view of the back surface of the light-transmitting screen in fig. 1.
Fig. 3 is a schematic structural diagram of an application scene of a light-transmitting screen or a projection screen according to an embodiment of the present application.
Fig. 4 is a schematic side view of a projection display system in a subway scene according to an embodiment of the present application.
Detailed Description
Other advantages and effects of the present application will be readily apparent to those skilled in the art from the present disclosure, by describing embodiments of the present application with specific examples. This application is also intended to cover any adaptations or uses of various embodiments and can be practiced in different but specific details of the subject matter within the scope of the description and from various points of view. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.
The technical scheme of the patent application relates to the design of a projection display system, in particular to the design of a projection screen.
As shown in fig. 1 and 2, schematic structural diagrams of the front and back sides of the light-transmitting screen 1 according to an embodiment of the present application are shown.
The light-transmitting curtain 1 comprises a body, which can be in a sheet shape as shown in the figure, and the size of the light-transmitting curtain can be set according to actual requirements. The outer surface of one side of the body is a light reflection type display surface for displaying images.
The body is provided with a plurality of penetrating parts 11 penetrating through the body and arranged on the display surface, namely penetrating from the display surface to the back surface. In this embodiment, the plurality of penetrating portions 11 may be holes, and the shape thereof may be circular, and the aperture thereof may be 0.5-1.5 mm, and the plurality of penetrating portions 11 may be uniformly distributed on the display surface, for example, in the form of an array as shown in the drawing.
The density of the plurality of penetrating parts 11 distributed on the display surface is between 30% and 80%, the density can be changed according to the actual environment in the actual design, and experiments are carried out by the applicant, so that the high-transmittance and high-contrast imaging can be achieved by selecting the density interval.
As shown in fig. 1, optionally, in order to achieve better effects of high transmittance and high contrast imaging, the light reflective display surface is coated with a projection reflective material, such as a projection paint (which may be light-colored or white), and the surface gain of the light reflective display surface is more than 1 time, preferably more than 1.2 times.
As shown in fig. 2, the back surface of the display surface is coated with a dark material absorbing light, and the color of the dark material has RGB color intensity values selected from the range of R <220, g <220, b <220, preferably black, and has a low black reflectance, and is less affected by reflected light when an observer views an opposite person or thing from the back surface through the penetrating portion 11.
The light-transmitting screen 1 shown in the embodiment of fig. 1 may be used for projection, in order to increase the brightness of the display surface, and in other embodiments, the present application further provides a projection screen, which includes the light-transmitting screen and a light-adjusting screen attached to the back surface of the display surface of the light-transmitting screen 1, where the transparency of the light-adjusting screen is adjustable. Specifically, the light-transmitting curtain and the light-adjusting curtain can be fixed by transparent adhesive bonding.
It should be noted that, in other embodiments, the light-transmitting curtain may be used alone, and not necessarily in combination with the light-transmitting curtain.
In an embodiment of the present application, the light modulating screen is a liquid crystal glass, preferably a film-shaped liquid crystal light modulating film, wherein a liquid crystal/polymer mixed material is injected between two transparent conductive films, the liquid crystal light modulating film is in an opaque state under the condition of no electric field effect, and when alternating current is supplied, the liquid crystal sub-domains are orderly arranged, and at the moment, the electrically-induced light modulating film is converted from an opaque state (OFF state) to a transparent state (ON state). Through the action of an electric field, the rapid conversion from an on state to an off state and from the off state to the on state can be realized. When the liquid crystal dimming film is in an atomized state, the projection picture of the projection equipment is projected on the surface of the liquid crystal dimming film to be forward projected, at the moment, the atomized surface can reflect the picture with the brightness of about 40%, and a viewer can observe the forward projection effect.
Therefore, in this embodiment of the present application, the light-adjusting curtain and the light-transmitting curtain 1 are used in a superimposed manner, and the light-adjusting curtain fills the gap of the penetrating portion 11 in the atomized state, so that the brightness reflection of about 10% -20% can be increased on the basis of the original display brightness of the light-transmitting curtain 1 used alone, and a better forward projection display effect can be achieved.
As shown in fig. 3, an application scenario is shown in which the light-transmitting screen 1 (of course, in other embodiments, the light-transmitting screen 1 and the dimming screen may be a combination of the above-mentioned projection screens) performs forward projection on the display surface of the light-transmitting screen 1 through a projection device 3 (e.g., a projector).
The display surface reflects the light of the projection device to display an image to the user a located on the front side, and the user B located on the back side of the light-transmitting screen 1 or the projection screen can observe the opposite person or thing, such as the user a through the penetrating portion 11.
Preferably, the projection device in the above embodiment is a laser projector, and further preferably, the projection device is an ultrashort-focal projector, and the projection ratio is less than 0.5:1.
The projection screen 2 may be applied to, for example, a subway scene, as shown in fig. 4, and shows a schematic side structure of a projection display system applied to the subway scene in an embodiment of the present application.
The system comprises a projection screen 2 and a projection device 3.
The projection screen 2 is arranged on the subway shielding door 4 in a covering mode. In this embodiment, the subway shield door 4 has two opposite sides, including a first side facing the subway platform region 5 and a second side facing the track region 6, where the projection screen 2 is covered on the first side, specifically, an outer surface of the dimming screen in the projection screen 2 is covered on the first side.
The projection screen 2 may be adhered to the subway shield door 4 by means of adhesion (for example, by electrostatic adsorption, adhesive, etc.), and preferably, the projection screen 2 may cover the glass of the entire shield door 4.
The projection device 3 is disposed in the subway platform area 5, and is disposed such that a projection direction thereof is directed toward a display surface of the projection screen 2, wherein the light-transmitting screen of the projection screen 2 and the light-modulating screen are sequentially disposed on a light path of the outgoing light projected by the light-transmitting screen.
Because the projection effect of the liquid crystal dimming film is not good, the application utilizes the projection screen 2, namely the screen matched with the light transmission screen and the dimming screen, the front side mainly uses the light transmission screen to achieve better projection effect, and the rear dimming screen is opaque when the projection is required to change, so as to shield the penetrating part of the light transmission screen, thereby obtaining better projection effect.
Preferably, the projection device 3 is disposed above the shielding door 4, for example, a hanging bracket may be hung above the shielding door 4, and the projection device 3 may be preferably the aforementioned laser projector, and the projection ratio is less than 0.5:1.
In an embodiment of the present application, the system further includes a light-modulating screen controller electrically connected to the light-modulating screen and communicatively connected to a sensing device for sensing the entrance and exit of the subway train and generating corresponding electric signals, which may be disposed in the track area or the dock area, and the sensing device may include a sensor, such as a position sensor disposed in the dock, and may be implemented by a photoelectric sensor, an infrared retro-reflector, a magnetic induction sensor, an ultrasonic sensor, or the like, or may be a speed sensor (such as a linear speed sensor or an angular speed sensor) disposed on the train, or the like, and may be in wireless communication connection with the light-modulating screen controller connected to the wireless signal transceiver circuit of the same communication protocol through connection with the wireless signal transceiver circuit (such as WiFi, zigbee, NB-IOT, lora, GPRS, 3G/G, or the like).
For example, when the train is not in a stop, the dimming curtain is not electrified and is in an opaque state, the light-transmitting curtain is covered by the light-transmitting curtain, at the moment, the projection device 3 projects contents such as advertisements on the light-transmitting curtain, when the train is in a stop, the dimming curtain controller can generate electricity to enable the dimming curtain to be electrified so as to control transparency or opacity, when the train is in a stop, people in the train and on a dock can observe the conditions inside and outside the train mutually, and can react in advance, so that accidents caused by crowded people when the shielding door 4 is opened are avoided.
In summary, the light-transmitting screen, the projection screen and the projection display system of the patent application comprise a body, wherein the outer surface of one side of the body is a light-reflecting display surface for displaying images, the other side of the body is a light-absorbing surface provided with a dark light-absorbing material for absorbing light rays irradiated on the light-absorbing surface, and a plurality of penetrating parts penetrating the body are arranged on the display surface, wherein the density of the penetrating parts distributed on the display surface is between 30% and 80%, so that the problem of high contrast display of front projection display is effectively solved, and the problem of high transmittance when the front and back views can be solved.
The above-described embodiments are merely illustrative of the principles of the present application and their effectiveness, and are not intended to limit the present application. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present application. Accordingly, it is intended that all equivalent modifications and variations which a person having ordinary skill in the art would accomplish without departing from the spirit and technical spirit disclosed in the present patent application shall be covered by the claims of the present patent application.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810330219.6A CN108303847B (en) | 2018-04-13 | 2018-04-13 | Transparent screen, projection screen and projection display system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810330219.6A CN108303847B (en) | 2018-04-13 | 2018-04-13 | Transparent screen, projection screen and projection display system |
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| Publication Number | Publication Date |
|---|---|
| CN108303847A CN108303847A (en) | 2018-07-20 |
| CN108303847B true CN108303847B (en) | 2025-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810330219.6A Active CN108303847B (en) | 2018-04-13 | 2018-04-13 | Transparent screen, projection screen and projection display system |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109947381B (en) * | 2019-02-28 | 2023-08-25 | 佛山星乔电子科技有限公司 | Multi-line linkage control method and control system for subway semitransparent display device group |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006119489A (en) * | 2004-10-25 | 2006-05-11 | Kimoto & Co Ltd | Reflective screen |
| CN208351240U (en) * | 2018-04-13 | 2019-01-08 | 无锡视美乐激光显示科技有限公司 | Light transmission curtain, projection screen and projection display system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100576612B1 (en) * | 2003-05-31 | 2006-05-04 | 최해용 | Surface reflection type nonflammable metal screen and manufacturing method of copper screen |
| JP2006133636A (en) * | 2004-11-09 | 2006-05-25 | Kimoto & Co Ltd | Transmission type screen |
| JP2014206706A (en) * | 2013-04-16 | 2014-10-30 | パイオニア株式会社 | Display device, display method, and display program |
| JP6115981B2 (en) * | 2014-12-29 | 2017-04-19 | 株式会社ａｒｃ | Transparent screen and method of manufacturing transparent screen |
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2018
- 2018-04-13 CN CN201810330219.6A patent/CN108303847B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006119489A (en) * | 2004-10-25 | 2006-05-11 | Kimoto & Co Ltd | Reflective screen |
| CN208351240U (en) * | 2018-04-13 | 2019-01-08 | 无锡视美乐激光显示科技有限公司 | Light transmission curtain, projection screen and projection display system |
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| CN108303847A (en) | 2018-07-20 |
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