JP6826716B2 - Projection system and projection method using this - Google Patents

Description

The present invention relates to a projection system including a predetermined screen installed in an event venue, a lecture room, a conference room, a commercial facility, or the like, and a projection method using the projection system. In particular, the present invention relates to a projection system using a screen that allows the background side to be visually recognized.

A screen that utilizes the light reflectivity and light transmittance of a material (generally called a "transparent screen") as a screen that allows the background to be visually recognized while displaying an image projected from a projector (projector). ) Etc. are known. These screens are attracting attention as digital signage equipment capable of exhibiting high spatial performance output because they have features such as the ability to obtain images with a sense of depth and a sense of visual floating. As a commercially available transparent screen, for example, a Dirad (registered trademark) screen is known. This is a rear projection type screen that is attached to a transparent base material such as an acrylic surface or a glass surface to project an image projected from a projector installed on the back, and the background can be visually recognized from the front.

Regarding transparent screens, technological development has been progressing for some time. For example, Patent Document 1 discloses a screen having a light scattering layer obtained by dispersing spherical fine particles having an average particle size in a predetermined range in a binder (glass or the like) having a refractive index ratio in a predetermined range. (See Patent Document 1). As the spherical fine particles, for example, inorganic fine particles such as silica and alumina and organic fine particles such as polymethylmethacrylate and polystyrene are used. With these configurations, the screen has good forward scatterability and excellent transparency.

Further, in Patent Document 2, a light transmitting portion and a light absorbing scattering portion having light absorbing scattering particles containing a light scattering agent and a light absorbing agent are used as a base material so as to be able to project an image having good contrast. A plurality of screens in which a plurality of screens are alternately arranged in parallel on a layer have been proposed (see Patent Document 2). Further, in Patent Document 3, a light diffusing layer containing light diffusing fine particles and xerogel and an adhesive portion patterned in a specific shape and arranged discretely are described as having excellent stickability and peelability to a base material. A screen having a transparent adhesive layer having the above has been proposed (see Patent Document 3).

In addition, among screens that can visually recognize the background, screens that use commercially available screen door nets and screens that use transparent resin sheets for agriculture are known as screens that can be easily manufactured using common materials such as daily necessities. Has been done. These screens are classified as a type of transparent screen, and the background behind them can be visually recognized while displaying the image projected from the projector. All of them can be produced by cutting materials (screens for screen doors and vinyl sheets for agriculture) to a desired size and fixing them with supporting equipment.

Japanese Unexamined Patent Publication No. 2007-0343224 JP 2015-031799 JP 2015-004789

However, conventional screens that exhibit high projection effects, including the techniques proposed in Patent Documents 1 to 3, have a problem that the materials used for the screen are expensive and the introduction cost is high. On the other hand, screens using commercially available screens for screen doors and screens using transparent resin sheets for agriculture can be manufactured by simply combining inexpensive materials by a simple process, but when used as they are, the sharpness is high. There are drawbacks such as lowness and reflection, and there is a problem that the display quality of the image is inferior to that of the above-mentioned transparent screen. That is, judging from the screens that are currently widely used, it can be said that there is a trade-off relationship between the introduction cost and the display quality of the transparent screen in which the background can be visually recognized.

Since the screen that can see the background can be used in various situations, the demand for it may increase in the future, but it is considered that the technology that eliminates the above relationship is necessary to further promote the spread. ..

The present invention has been made to deal with such a problem, and an object of the present invention is to provide a projection system having excellent image display quality while suppressing the introduction cost. Furthermore, it is an object of the present invention to provide a projection method for demonstrating content that combines a video and a performer using this projection system.

The projection system of the present invention displays an image projected by a projector from the front side, which is the viewer side, on the front side, and displays a transmissive screen on which the viewer can see the back side, and the screen. The screen is provided with supporting equipment to support, and the screen is made of a mesh member made by knitting fibers, and has a silver layer serving as a light reflecting layer on the front side of the mesh member and a black layer on the back side. It is characterized by that. Further, the projection system includes dark-colored equipment arranged apart from each other on the back side of the screen.

In this projection system, the silver layer is a coating film using a paint containing aluminum powder.

The mesh member is a member made by knitting resin-coated glass fibers. Further, the number of meshes of the mesh member is 12 to 30.

The projection method using the projection system of the present invention is a transmissive screen in which the viewer can see the back side while displaying the image projected by the projector from the front side, which is the viewer side. The screen is provided with supporting equipment for supporting the screen and dark-colored equipment arranged apart from each other on the back side of the screen. The screen is made of a mesh member formed by knitting fibers, and the above-mentioned mesh member. A performer or an object arranged between the screen and the dark equipment for the viewer, each having a silver layer serving as a light reflecting layer on the front side and a black layer on the back side, and the above image. It is characterized in that it is visually recognized in combination with.

It is characterized in that the performer or an object is irradiated with light from a light source arranged at a position where the optical axis does not face the screen.

The projection system of the present invention displays an image projected by a projector from the front side, which is the viewer side, on the front side, and displays a transmissive screen on the back side, which is visible to the viewer, and the screen. Since the screen is provided with supporting equipment to support and the screen is made of a mesh member made by knitting a predetermined fiber, the introduction cost can be suppressed as compared with a conventional screen. In particular, a mesh member (mesh) having a minute three-dimensional surface shape obtained by knitting fibers is used, and a silver layer is provided on the front side and a black layer is provided on the back side, which is the projection side of the mesh member from the projector. Since it has a configuration in which is arranged, it is possible to display a highly clear image on the front side while visually recognizing the rear side of the screen. Further, by adjusting the content including the image, an image having a sense of depth and a visual floating feeling can be obtained.

Since the silver layer is a coating film using a paint containing aluminum powder, the display quality of the image is excellent and the cost can be reduced.

Since the mesh member is a member made by knitting resin-coated glass fiber, it has flexibility and can be deformed into various shapes depending on the application. In addition, since it is excellent in durability and dimensional stability and is coated with a resin, it is possible to prevent loosening, unraveling, and curling. Further, since the number of meshes of the mesh member is 12 to 30, it is possible to display a highly clear image on the front side while sufficiently visually recognizing the rear side of the screen.

Since the projection method of the present invention utilizes the projection system of the present invention, the viewer is made to visually recognize the performer or object arranged between the screen and the dark-colored equipment in combination with the image. Content can be implemented.

It is a schematic diagram which shows an example of the projection system of this invention. It is a partially enlarged view of the screen. It is a partial sectional view of a screen. This is an enlarged photograph of the screen. It is a schematic diagram which shows another example of the projection system of this invention. It is a schematic diagram which shows another example of the projection system of this invention. It is a schematic diagram which shows an example of the projection method of this invention.

An embodiment of the projection system of the present invention will be described with reference to FIG. FIG. 1 is a schematic view showing the overall configuration of the projection system of the present invention. As shown in FIG. 1, the projection system 1 includes a predetermined transmissive screen 2 and a support device 5 that supports the screen 2. The screen 2 is made of a mesh member made by knitting fibers, and has a silver layer 2a serving as a light reflecting layer on the front side of the mesh member and a black layer 2b on the back side. The projector 7 is arranged so as to face the silver layer 2a which is a light reflecting layer, the projected light is projected from the projector 7 onto the screen 2, and the projected light is reflected by the silver layer 2a to reflect the projected light on the front surface of the screen 2. The image 10 is displayed on the (silver layer) side. Further, since the screen 2 is made of a mesh member, an opening is formed. As a result, the background behind the screen 2 can be visually recognized through the opening. In FIG. 1, the viewer 8 is a person who views the image 10 formed on the surface of the screen 2 and the performer or a related object behind the screen depending on the content content from the front of the screen 2.

Usually, many transmissive screens are projected from the back side, but the screen in the present invention is a format in which the screen is mainly projected from the front side using a projector. The projector 7 for projecting an image on the screen is a so-called projector, and a known one can be used without particular limitation. Examples of such a projector include a CRT (Cathode Ray Tube) projector, a liquid crystal projector, a DLP (Digital Light Processing) projector, and an LCOS (Liquid Crystal on Silicon). In the projection system and projection method of the present invention, a DLP or LCOS projector is adopted because it is easy to realize high resolution and high contrast among these, and it is easy to create a sense of unity between the image displayed on the screen and the performer. It is preferable to do so.

The form of the support equipment 5 is not particularly limited, and any equipment may be used as long as the screen 2 made of a mesh member can be attached in a desired manner. Here, it is preferable to apply a constant tension to fix the screen so that the screen surface does not fluctuate. In FIG. 1, a screen spread out in a plane is fixed from all four sides. Further, the present invention is not limited to this, and for example, in the case of a large screen, a hook or the like may be used as a supporting device to fix the screen to the ceiling or wall.

As shown in FIG. 1, in addition to the above configuration including the screen 2 and the support equipment 5, the projection system 1 of the present invention may have a dark color equipment 6 arranged apart from the back side of the screen 2. .. The dark-colored equipment 6 may be any dark color such as black that suppresses or prevents light reflection, and a dark curtain made of cloth or a light-shielding plate can be adopted. By absorbing the light that has passed through the screen 2 and preventing the reflection of the light behind the screen by the dark color equipment 6, it is possible to improve the display image quality on the screen surface and prevent ghosting behind the screen. In particular, in content where the performer is placed behind the screen and the image formed on the surface of the screen and the performer behind the screen are combined, it is possible to clearly display each of the image and the performer without visually recognizing the screen. Become.

The dark color equipment 6 is preferably mounted at least behind the screen when viewed from the viewer side. In the case of a multi-layer structure in which screens are arranged one on top of the other, dark equipment is installed behind the screen located at the rearmost position. Further, the projection system of the present invention is preferably used in a dark room. Even in this case, it is preferable to use the above dark-colored equipment together in order to prevent ghosting behind the screen.

The details of the screen will be described with reference to FIGS. 2 and 3. FIG. 2 is a partially enlarged view of this screen, and FIG. 3 is a partially cross-sectional view of this screen. As shown in FIG. 2, the screen 2 is made of knitted fibers 4 and is made of a mesh member having an opening 3. Here, the fiber is a thin thread-like material (fiber material) made of metal, resin, glass, or the like. The mesh member is made by knitting the fibers 4 by a predetermined knitting method. As the knitting method, any folding method such as plain weave, twill weave, leno weave, and cedar twill weave can be adopted. Plain weave is preferable because it has a simple structure, the surface irregularities do not become too large, and the image clarity is excellent. Plain weave is a method of weaving warp fiber materials and weft fiber materials one by one by alternately raising and lowering them. The mesh member used for the screen 2 in the present invention has a structure in which such a fiber material is plain-woven, and has a minute three-dimensional surface shape by combining with the number of meshes as described later.

The number of meshes of the mesh member constituting the screen 2 is preferably 12 to 30, and more preferably 16 to 18. Here, the number of meshes is the number of meshes from the center to the center of the line on one side of 1 inch (25.4 mm). The fiber diameter of the fibers constituting the mesh member is preferably 0.05 to 1 mm, more preferably 0.1 to 0.5 mm. If the number of meshes in the mesh member is less than 12, it is clearly confirmed that the mesh member has a large gap, and the displayed image becomes coarse, which may not meet the requirements for the application of the projection system. On the other hand, if the number of meshes exceeds 30, the transparency is poor and it may be difficult to clearly see the rear part of the screen. If there is a special reason for the effect, the mesh member may have a mesh number outside the above range (12 to 30).

Further, the shape of the opening 3 of the mesh member is not particularly limited. In order to visually recognize the background behind the mesh member more clearly, the aperture ratio may be made as large as possible, and those having a rectangular opening (square shape, on a rectangle) are preferable.

As the fiber material of the mesh member, stainless steel fiber, glass fiber, resin fiber and the like can be used. Further, as the resin fiber, resin fibers such as polyethylene (PE), polypropylene (PP), polystyrene (PS), polyvinyl chloride (PVC), and polyester can be used. Among these, it is preferable to use glass fiber or resin fiber, and it is particularly preferable to use glass fiber because it has flexibility and can be deformed into various shapes depending on the application.

Glass fiber is excellent in durability, dimensional stability, corrosion resistance, fire resistance and the like. When glass fiber is used, it is more preferable to use resin-coated glass fiber having a resin coating (for example, polyvinyl chloride) formed on the surface of the glass fiber. By coating the glass fiber with the resin, it is possible to prevent the screen from loosening, unraveling, and curling. In addition, the silver layer described later can be easily formed on the fiber surface.

As shown in FIG. 3, on the surface of the screen 2 (the surface of each fiber 4), a silver layer 2a serving as a light reflecting layer is formed on the surface on the front side which is the viewer side. Further, a black layer 2b serving as a light absorption layer is formed on the surface on the back surface side. The silver layer 2a may be formed on at least a part (a portion for displaying an image) of the front surface of the screen 2. When the projected light from the projector is displayed on the entire screen, it is preferable that it is formed on the entire surface of the viewer side, but if there is a reason for production, it is formed on a part of the surface of the viewer side. It does not matter if only is formed.

As the raw material for the silver layer, a material that can obtain the desired sharpness is selected. In particular, since it is excellent in light reflectance, it is preferable to form a silver layer on the fiber as a coating film using a paint containing a metal powder exhibiting a silver color. In addition, it is preferable to use a paint containing aluminum powder among the metal powders because the display quality of the image is excellent and the cost can be reduced. The binder component of the paint is not particularly limited, and for example, urethane resin or the like can be used.

For example, when resin-coated glass fiber is used as the mesh member of the screen, the paint containing the aluminum powder is applied to the surface of one (front surface) of the mesh member by spraying or the like, and then dried to form a silver layer. A black paint is similarly applied to the other (back surface) surface of the mesh member and then dried to form a black layer. At the time of coating, it is preferable that the other surface is attached to a flat plate or the like so that the paint does not squeeze out onto the other surface. Further, when a colored material (silver or black) is already adopted as the mesh member, a screen having the same configuration can be obtained by forming only the layer on the side that does not correspond to the color.

An enlarged photograph of an example of the screen in the present invention is shown in FIG. FIG. 4A is an enlarged photograph seen from the front surface (silver layer) side of the screen, and FIG. 4B is an enlarged photograph seen from the back surface (black layer) side of the screen. In the example of the photograph, a paint containing aluminum powder is applied to the front surface of a mesh member (black) made of plain weave of resin-coated glass fiber, and then dried to form a silver layer. In the projection system of the present invention, by using a screen made of a mesh member having a structure in which a silver layer is arranged on the front side, which is the projection side from such a projector, and a black layer is arranged on the back side, the rear side of the screen is displayed. A high-definition image can be displayed on the front side while being visually recognized. In addition, it can be manufactured by combining commercially available ordinary members (mesh member and paint), and can be introduced at low cost.

Other examples of the projection system of the present invention are shown in FIGS. 5 and 6. The projection system 1 shown in FIG. 5 has a form in which a screen 2 made of a mesh member is curved in a convex shape toward the viewer 8. Further, the bending direction in FIG. 5 may be opposite, and the bending shape may be appropriately changed according to the effect. The projection system 1 shown in FIG. 6 has a form in which a screen 2 made of a mesh member is inclined toward the back side or the front side when viewed from the viewer 8. The inclination angle can be set as appropriate, for example, about 1 ° to 10 ° when viewed from the surface perpendicular to the installation surface. By tilting it, the visibility of the image can be changed. These configurations may be applied in combination with each other. Further, the form is not limited to the illustrated form, and various modes can be taken by changing the size, overall shape, degree of curvature, degree of inclination, and the like.

FIG. 7 shows an example of a projection method using the projection system of the present invention. FIG. 7 is a schematic view showing the overall configuration of the projection system being demonstrated. The projection method of the present invention utilizes the projection system of the present invention described above. Therefore, as shown in FIG. 7, the configuration of the projection system 1 is the same as that shown in FIG. 1 and the like described above. Specifically, the projection system 1 includes a transmissive screen 2, a support device 5 that supports the screen 2, and a dark color device 6 that is spaced apart from the back side of the screen 2. The screen 2 is made of a mesh member made by knitting fibers, and has a silver layer 2a serving as a light reflecting layer on the front side of the mesh member and a black layer 2b on the back side. The projector 7 is arranged so as to face the silver layer 2a which is a light reflecting layer, the projected light is projected from the projector 7 onto the screen 2, and the projected light is reflected by the silver layer 2a to reflect the projected light on the front surface of the screen 2. The image 10 is displayed on the (silver layer) side. In addition, a performer 9 is arranged between the screen 2 and the dark-colored equipment 6, and a demonstration is performed according to the image 10. The projection method of the present invention is characterized in that, in this configuration, the viewer 8 is made to visually recognize the performer 9 and the image 10 in combination. Further, an object (moving object / non-moving object) may be arranged instead of the performer, and the image 10 and this object may be combined and visually recognized.

In this projection method, it is important not to let the viewer 8 recognize the existence of the screen 2, and therefore it is preferable to execute the projection method in a dark room including the place of the viewer. Even in this case, the dark color equipment 6 is used together to prevent ghosting behind the screen. Furthermore, since the performer needs to be visible through the screen from the viewer, the performer is illuminated with a spotlight. The spotlight is preferably arranged at a position where the optical axis does not face the screen 2 (the screen is not directly irradiated with light). This makes it possible to prevent the screen from being seen by the viewer.

Further, as the video content projected by the projector, it is preferable that the background is black (filled) in order to give a sense of depth and a visual floating feeling without recognizing the screen.

The screen device of the present invention can be inexpensively provided for, for example, a concert where a large screen is in high demand. In addition, it is possible to develop a promotion that produces a very high level of spatial performance output and a very high level of eye-catching effect, which can contribute to the activation of entertainment and culture. In addition, it can be suitably used in various fields as various information transmission means such as advertisements.

1 Projection system 2 Screen 3 Opening 4 Fiber 5 Support equipment 6 Dark color equipment 7 Projector 8 Viewer 9 Performer 10 Video

Claims (8)

It ’s a projection system,
The projection system supports a transmissive screen on which the viewer can see the back side while displaying an image projected by the projector from the front side, which is the viewer side, on the front side. Equipped with support equipment
The screen is composed of only a mesh member having an opening made by plain weaving fibers, and the back side of the screen can be visually recognized through the opening.
Among the surfaces of the fibers constituting the mesh member, the screen has a silver layer serving as a light reflecting layer on the front surface and a black layer on the back surface .
A projection system in which the silver layer is a coating film using a paint containing aluminum powder. The projection system according to claim 1, wherein the mesh member is a member made by knitting resin-coated glass fibers. The projection system according to claim 1 or 2, wherein the number of meshes of the mesh member is 12 to 30. The projection system according to any one of claims 1 to 3, wherein the projection system includes dark-colored equipment arranged apart from each other on the back side of the screen. It is a projection method using a projection system.
The projection system supports a transmissive screen on which the viewer can see the back side while displaying an image projected by the projector from the front side, which is the viewer side, on the front side and the screen. It is equipped with support equipment and dark equipment that is spaced apart from the back of the screen.
The screen is composed of only a mesh member having an opening made by plain weaving fibers, and the back side of the screen can be visually recognized through the opening.
Among the surfaces of the fibers constituting the mesh member, the screen has a silver layer serving as a light reflecting layer on the front surface and a black layer on the back surface .
The silver layer is a coating film using a paint containing aluminum powder.
A projection method characterized in that a performer or an object arranged between the screen and the dark-colored equipment is visually recognized by the viewer in combination with the image. The projection method according to claim 5, wherein the performer or an object is irradiated with light from a light source arranged at a position where the optical axis does not face the screen. The projection method according to claim 5 or 6, wherein the mesh member is a member made by knitting resin-coated glass fibers. The projection method according to any one of claims 5 to 7, wherein the number of meshes of the mesh member is 12 to 30.