JP2016009271A - Video display system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a video display system allowing an observer to see a scene beyond a video display transparent member and displaying a video on a video display transparent member, and capable of performing an interactive processing such as allowing the video to be changed, etc. according to the operation of the observer.SOLUTION: A video display system includes: a video display transparent member 1 that causes a scene S2 on a second surface B side to be transmitted so as to be visible from an observer X on a first surface A side and causes video light L projected from a projector 200 installed on the first surface A side to be visible as a video from the observer X on the first surface A side; the projector 200 installed on the first surface A side of the video display transparent member 1 and converting video signals from a video generation device 400 into the video light L and projecting the video signals to the video display transparent member 1; a touch panel 300 for detecting an operation by the observer X and acquiring operation information; and the video generation device 400 for generating the video signals corresponding to content of the operation information from the touch panel 300.

Description

  The present invention relates to a video display system that displays video light projected on a video display transparent member from a projector so as to be visible to an observer as a video.

Showcases for products, etc .; display cases for works of art, etc .; windows for buildings, showrooms, vehicles, etc .; glass doors;
The viewer can see the scene seen from the other side of the transparent member when viewed from the observer side, and when transmitting information such as the description of products, the state of various devices, destination guidance, transmission items, etc. to the observer On the other hand, when displaying the operation screens of various devices, or when making it impossible for the observer to see the scene behind the transparent member for privacy protection, security, etc., the image projected from the projector An image display transparent member (so-called transparent screen) that displays light as a visual image to an observer.

  The image display transparent member includes a reflective image display transparent member that displays the image light projected from the projector as an image to an observer on the same side as the projector; and the image light projected from the projector There is a transmission type image display transparent member that displays the image as a video to an observer on the opposite side of the projector.

  As the reflective image display transparent member, for example, a regular uneven structure (microlens) on the surface between the first transparent substrate 110 and the second transparent substrate 120 as shown in FIG. The first transparent layer 132 on which the array) is formed, the reflective film 133 that is formed along the surface of the first transparent layer 132 on the concave-convex structure side, and transmits a part of the incident light, and the reflective film A video display transparent member 101 having a second transparent layer 134 provided so as to cover the surface of 133 is proposed (see Patent Document 1).

  In the reflective image display transparent member 101, as shown in FIG. 20, the image light L projected from the projector 200 and incident from the surface on the second transparent substrate 120 side (first surface A) is An image is formed by scattering on the reflecting film 133 and is displayed as an image that can be viewed by the viewer X on the same side as the projector 200.

  As the transmissive image display transparent member, for example, as shown in FIG. 21, the transparent layer 142 and the inside of the transparent layer 142 are disposed between the first transparent substrate 110 and the second transparent substrate 120. A video display transparent member 102 having a plurality of light scattering portions 143 arranged in parallel to each other and at a predetermined interval and extending along the surface direction has been proposed (see Patent Document 2).

  In the transmissive image display transparent member 102, as shown in FIG. 21, the image light L projected from the projector 200 and incident from the surface on the first transparent substrate 110 side (first surface A) is The light is scattered by the light scattering unit 143 to form an image, which is displayed as a video image for the viewer Y on the opposite side of the projector 200.

  However, the conventional image display system including the image display transparent member and the projector only displays the image unilaterally to the observer, and changes the image according to the operation of the observer. Interactive processing is not possible.

Special table 2010-539525 gazette JP, 2014-013369, A

  The present invention provides interactive features such as showing the viewer a scene beyond the image display transparent member, displaying an image on the image display transparent member, and changing the image in accordance with the operation of the observer. Provided is a video display system capable of performing various processing.

The present invention has the following configuration.
[1] A transparent member having a first surface and a second surface opposite to the first surface, and transmits a scene on the first surface side so as to be visible to an observer on the second surface side. And the image light projected from the projector installed on the first surface side is transmitted to the viewer on the first surface side, and the scene on the first surface side is transmitted to the viewer on the first surface side. A video display transparent member that is visibly displayed as an image on either one of the observers on the second surface side, and is installed on the first surface side of the video display transparent member. A projector that converts light into a video display transparent member, a detection unit that detects an operation by the observer on the side on which the video is displayed or an operation of the observer, and acquires operation information or operation information; and a detection unit If there is no operation information or motion information from the If there is operation information or operation information and a video generator for generating a video signal corresponding to the content, the video display system.
[2] The video display system according to [1], wherein the detection unit is installed on the opposite side of the video display transparent member with respect to the viewer on the video display side.
[3] The detection means is installed on the opposite side of the image display transparent member with respect to the observer on the image display side, and receives the light from the observer through the image display transparent member; The video display system according to [1], further comprising: an image processing device that detects an observer's motion based on image information from the imaging unit and acquires the motion information.
[4] The video display system according to any one of [1] to [3], wherein a forward haze of the video display transparent member is 50% or less.
[5] The image display transparent member is a reflective image display transparent member that displays the image light projected from the first surface side as an image to an observer on the first surface side so that the image light is visible. The front haze of the display transparent member is 15% or less, the rear haze of the image display transparent member is 5% or more, and the ratio of the rear haze to the front haze (rear haze / front haze) is 0. The video display system according to any one of [1] to [3], which is 8 or more.
[6] The image display transparent member is a reflective image display transparent member that displays the image light projected from the first surface side as an image to an observer on the first surface side so that the image light is visible. The display transparent member has a first transparent layer having a concavo-convex structure on the surface between the first surface and the second surface, and the arithmetic average roughness Ra of the concavo-convex structure of the first transparent layer is The video display system according to any one of [1] to [5], which is 0.01 to 20 μm.
[7] A part of incident light formed by the image display transparent member between the first surface and the second surface so as to be along the surface of the first transparent layer on the concave-convex structure side. [6] The video display system according to [6], further including a reflective film that transmits the light and a second transparent layer that is provided so as to cover a surface of the reflective film.
[8] The image display system according to [6] or [7], wherein the uneven structure on the surface of the first transparent layer in the image display transparent member is an irregular uneven structure.
[9] The image display transparent member is a transmissive image display transparent member that displays image light projected from the first surface side as an image to an observer on the second surface side so that the image light is visible. The video display system according to any one of [1] to [3], wherein the front haze of the display transparent member is 4 to 40%.
[10] The image display transparent member is a transmissive image display transparent member that displays the image light projected from the first surface side as an image to an observer on the second surface side so that the image light is visible. The display transparent member is disposed between the first surface and the second surface, the transparent layer, and a plurality of lights extending along the surface direction, arranged in parallel to each other at a predetermined interval inside the transparent layer. The video display system according to any one of [1] to [4] and [9], including a scattering portion.

  According to the video display system of the present invention, the viewer is shown a scene on the other side of the video display transparent member, and the video is displayed on the video display transparent member. Interactive processing such as changing the value can be performed.

It is the schematic block diagram which shows 1st Embodiment of the video display system of this invention, and the layer block diagram which shows an example of a reflection type video display transparent member. It is sectional drawing which shows an example of the manufacturing process of a reflection type image display transparent member. It is a schematic block diagram which shows 2nd Embodiment of the video display system of this invention. It is the schematic block diagram which shows 3rd Embodiment of the video display system of this invention, and the layer block diagram which shows an example of a transmissive | pervious video display transparent member. It is sectional drawing which shows an example of the manufacturing process of a transmissive | pervious image display transparent member. It is a schematic block diagram which shows 4th Embodiment of the video display system of this invention. It is a schematic block diagram which shows 5th Embodiment of the video display system of this invention. It is a schematic block diagram which shows 6th Embodiment of the video display system of this invention. It is a schematic block diagram which shows 7th Embodiment of the video display system of this invention. It is a schematic block diagram which shows 8th Embodiment of the video display system of this invention. It is a schematic block diagram which shows 9th Embodiment of the video display system of this invention. It is a schematic block diagram which shows 10th Embodiment of the video display system of this invention. It is a schematic block diagram which shows 11th Embodiment of the video display system of this invention. It is a schematic block diagram which shows 12th Embodiment of the video display system of this invention. It is a schematic block diagram which shows 13th Embodiment of the video display system of this invention. It is a layer block diagram which shows the other example of a reflection type image display transparent member. It is a layer block diagram which shows the other example of a reflection type image display transparent member. It is a layer block diagram which shows the other example of a transmissive | pervious image display transparent member. It is a layer block diagram which shows the other example of a transmissive | pervious image display transparent member. It is the schematic block diagram which shows an example of the conventional video display system, and the layer block diagram which shows an example of a reflection type video display transparent member. It is the schematic block diagram which shows the other example of the conventional video display system, and the layer block diagram which shows an example of a transmissive | pervious video display transparent member.

The following definitions of terms apply throughout this specification and the claims.
The “first surface” means the outermost surface of the image display transparent member and the surface on the side where image light is projected from the projector.
The “second surface” means the outermost surface of the image display transparent member and the surface opposite to the first surface.
“The scene on the first surface side (second surface side)” means the other side of the image display transparent member as viewed from the observer on the second surface side (first surface side) of the image display transparent member. It means an image (a main object (a product, a work of art, a person, etc.) and its background, a landscape, etc.) that is visible to the side. The scene does not include an image in which the image light projected from the projector is imaged and displayed on the image display transparent member.
“Forward haze” refers to incident light caused by forward scattering among transmitted light transmitted from the first surface side to the second surface side or transmitted light transmitted from the second surface side to the first surface side. The percentage of transmitted light deviating from 0.044 rad (2.5 °) or more. That is, it is a normal haze measured by the method described in JIS K 7136: 2000 (ISO 14782: 1999).
“Backward haze” means the percentage of the reflected light that is reflected on the first surface and that is 0.044 rad (2.5 °) or more away from the regular reflected light due to scattering.
The “concavo-convex structure” means an uneven shape composed of a plurality of convex portions and / or a plurality of concave portions.
The “irregular concavo-convex structure” means a concavo-convex structure in which convex portions or concave portions do not appear periodically and the sizes of the convex portions or concave portions are irregular.
The “sheet” may be a sheet or a continuous belt.
The arithmetic average roughness (Ra) is an arithmetic average roughness measured based on JIS B 0601: 2013 (ISO 4287: 1997, Amd. 1: 2009). The reference length lr (cut-off value λc) for the roughness curve was 0.8 mm.
The transmittance is a value in which the ratio of the total amount of light transmitted and scattered in the forward direction with respect to the incident light is a percentage.
The reflectance is a value in which the ratio of the total amount of light reflected and scattered in the backward direction with respect to incident light is a percentage.
The transmittance, reflectance and refractive index are values measured at room temperature using d-line (wavelength 589 nm) of a sodium lamp.

<Video display system>
The video display system of the present invention is a transparent member having a first surface and a second surface opposite to the first surface, so that a scene on the first surface side can be visually recognized by an observer on the second surface side. Transmits the image of the second surface side so that the viewer on the first surface side can see the first surface side, and projects the image light projected from the projector installed on the first surface side. A video display transparent member that is visibly displayed as an image on either the viewer on the side and the viewer on the second surface side; installed on the first surface side of the video display transparent member; A projector that converts the image signal into image light and projects the image light onto the image display transparent member; detection for detecting operation by the observer on the side on which the image is displayed or operation of the observer, and acquiring operation information or operation information Means; if there is no operation information or operation information from the detection means, the corresponding video signal Generated, if there is operation information or operation information from the sensing means and an image generating apparatus for generating a video signal corresponding to the content.
Embodiments of a video display system according to the present invention will be described below with reference to the drawings.

[First Embodiment]
FIG. 1 is a schematic configuration diagram showing a first embodiment of a video display system of the present invention.
The video display system according to the first embodiment includes a reflective video display transparent member 1, a projector 200 installed on the first surface A side of the video display transparent member 1 and spaced from the video display transparent member 1, A touch panel 300 (detecting means) disposed so as to be in contact with the first surface A of the video display transparent member 1 and a video generator 400 connected to the projector 200 and the touch panel 300 are provided.

(Projector)
The projector 200 only needs to be able to project the image light L onto the image display transparent member 1.
Examples of the projector 200 include known projectors and the like, and a short focus projector is preferable from the viewpoint that an image display system can be easily installed even in a small place.
The short focus projector is a projector capable of projecting image light from a close distance of 0 to 100 cm, and is also called an ultra short focus projector.

(Detection means)
The touch panel 300 detects an operation by the observer X when the observer X on the touch panel 300 side touches or approaches the finger F or the like, and detects operation information (coordinates of the contact location, changes in coordinates over time, number of contacts). Etc.) can be used.
The touch panel 300 detects, for example, a panel main body where the observer X on the side of the touch panel 300 contacts or approaches the finger F or the like, and a position where the finger F or the like contacts or approaches the panel main body. And a position detection unit that acquires
Examples of the position detection method of the touch panel 300 include a resistance film method, a capacitance method, an infrared method, a surface acoustic wave method, and an electromagnetic induction method.

(Video generator)
The video generation device 400 may be any device that can generate a video signal and change the content of the video signal when a preset condition is satisfied.
The video generation device 400 includes, for example, a video signal generation unit, an interface unit, and a storage unit.
The interface unit connects the projector 200, the touch panel 300, and the like and the video signal generation unit by wire or wirelessly.
The storage unit stores a video signal, setting conditions, and the like.
The video signal generation unit generates a video signal based on operation information from the touch panel 300, setting conditions stored in the storage unit, and the like. Specifically, when there is no operation information from the touch panel 300, a video signal corresponding to the operation information is generated, and when there is operation information from the touch panel 300, a video signal corresponding to the content is generated.

Note that the video signal generation unit may be realized by dedicated hardware, and the video signal generation unit includes a memory and a central processing unit (CPU), and realizes the function of the video signal generation unit. The function may be realized by loading the program for loading into the memory and executing the program.
In addition, a dedicated input device, a display device, or the like may be connected to the video generation device 400 as a peripheral device. An input device refers to an input device such as a display touch panel, a switch panel, or a keyboard, and a display device refers to a CRT, a liquid crystal display device, or the like.

(Reflective video display transparent member)
FIG. 1 is a layer configuration diagram showing an example of a reflective video display transparent member.
The reflective image display transparent member 1 is a transparent member having a first surface A and a second surface B opposite to the first surface A, and the scene S1 on the first surface A side is converted to the second surface B side. Of the second surface B side so as to be visible to the viewer Y, and the image S2 that is visible to the viewer A on the first surface A side and is projected from the first surface A side. The light L is displayed as an image to the viewer X on the first surface A side so as to be visible.

In the video display transparent member 1, a light scattering sheet 30 is disposed between a first transparent base material 10 and a second transparent base material 20.
The first transparent substrate 10 and the light scattering sheet 30 are bonded by the adhesive layer 12, and the second transparent substrate 20 and the light scattering sheet 30 are bonded by the adhesive layer 22.
The video display transparent member 1 is intended to enable the viewer X to visually recognize the video, but the viewer Y existing on the opposite side of the viewer X may simultaneously view the video.

(Transparent substrate)
Examples of the material of the first transparent substrate 10 and the second transparent substrate 20 (hereinafter collectively referred to as a transparent substrate) include glass and transparent resin. The material of each transparent substrate may be the same or different.

  Examples of the glass constituting the transparent substrate include soda lime glass, alkali-free glass, borosilicate glass, and aluminosilicate glass. The transparent substrate made of glass may be subjected to chemical strengthening, physical strengthening, hard coating or the like in order to improve durability.

  Examples of the transparent resin constituting the transparent substrate include polycarbonate, polyester (polyethylene terephthalate, polyethylene naphthalate, etc.), triacetyl cellulose, cycloolefin polymer, polymethyl methacrylate, etc. From the viewpoint of weather resistance and transparency, polycarbonate Polyesters and cycloolefin polymers are preferred.

As the transparent substrate, those having no birefringence are preferable.
The thickness of a transparent base material should just be the thickness by which durability as a base material is maintained. The thickness of the transparent substrate may be, for example, 0.01 mm or more, 0.05 mm or more, and 0.1 mm or more. Further, the thickness of the transparent substrate may be, for example, 10 mm or less, 5 mm or less, 0.5 mm or less, 0.3 mm or less, and 0.15 mm or less. It's okay.

(Adhesive layer)
Examples of materials for the adhesive layer 12 and the adhesive layer 22 (hereinafter collectively referred to as an adhesive layer) include ethylene-vinyl acetate copolymer, polyvinyl butyral, pressure-sensitive adhesive (acrylic pressure-sensitive adhesive, etc.), and photocurable resin composition. , Thermosetting resin compositions, thermoplastic resin compositions, and the like. The material of each adhesive layer may be the same or different.

  Examples of the thermoplastic resin contained in the thermoplastic resin composition include plasticized polyvinyl acetal, plasticized polyvinyl chloride, saturated polyester, plasticized saturated polyester, polyurethane, plasticized polyurethane, ethylene-vinyl acetate copolymer, ethylene -Ethyl acrylate copolymer etc. are mentioned.

  The thickness of the adhesive layer is not particularly limited as long as the function as the adhesive layer is maintained. For example, 0.01 to 1.5 mm is preferable, and 0.05 to 1 mm is more preferable.

(Light scattering sheet)
The light scattering sheet 30 includes a first transparent film 31; a first transparent layer 32 provided on the surface of the first transparent film 31 and having an irregular uneven structure on the surface; and a first transparent layer 32. A reflective film 33 that is formed along the surface of the concave-convex structure side and transmits a part of incident light; a second transparent layer 34 provided so as to cover the surface of the reflective film 33; And a second transparent film 35 provided on the surface of the transparent layer 34.

(Transparent film)
The first transparent film 31 and the second transparent film 35 (hereinafter collectively referred to as a transparent film) may be a transparent resin film or a thin glass film. The material of each transparent film may be the same or different.

  Examples of the transparent resin constituting the transparent resin film include polycarbonate, polyester (polyethylene terephthalate, polyethylene naphthalate, etc.), triacetyl cellulose, cycloolefin polymer, polymethyl methacrylate, and the like.

  The thickness of the transparent film is preferably such that a roll-to-roll process can be applied, for example, 0.01 to 0.5 mm is preferable, 0.05 to 0.3 mm is more preferable, and 0.2 mm or less is more preferable.

(Transparent layer)
The first transparent layer 32 and the second transparent layer 34 (hereinafter also collectively referred to as a transparent layer) are preferably transparent resin layers. The material of each transparent layer may be the same or different, and the same is preferable.

  The transparent resin constituting the transparent resin layer is preferably a cured product of a photocurable resin (such as an acrylic resin or an epoxy resin), a cured product of a thermosetting resin, or a thermoplastic resin. The yellow index of the transparent resin constituting the transparent resin layer is preferably 10 or less and more preferably 5 or less from the viewpoint of maintaining transparency so that the function as a window in the image display transparent member is not impaired.

The thickness of the transparent layer (excluding the portion where the concavo-convex structure is formed) may be any thickness that can be easily formed by a roll-to-roll process, and is preferably 0.5 to 50 μm, for example.
The transmittance of the transparent layer is preferably 50 to 100%, more preferably 75 to 100%, and still more preferably 90 to 100%.

  The arithmetic average roughness Ra of the irregular concavo-convex structure formed on the surface of the first transparent layer 32 is preferably 0.01 to 20 μm, and more preferably 0.05 to 10 μm. If the arithmetic average roughness Ra is within this range, the projected image has a wide viewing angle, and can be viewed without directly viewing the specularly reflected light, thereby suppressing graininess due to the uneven structure. When the arithmetic average roughness Ra is 10 μm or less, it is more preferable that the concavo-convex structure does not get in the way when a scene on the other side of the image display transparent member 1 is viewed.

(Reflective film)
The reflection film 33 may be any film that transmits part of the light incident on the reflection film 33 and reflects the other part. Examples of the reflective film 33 include a metal film, a semiconductor film, a dielectric single layer film, a dielectric multilayer film, and combinations thereof.

Examples of the metal constituting the metal film and the semiconductor film include aluminum, silver, nickel, chromium, tungsten, silicon, titanium, zirconia, and the like, and aluminum, silver, or an alloy containing them as a main component is preferable.
Examples of the dielectric constituting the dielectric film include metal oxides and metal nitrides.
The reflective film 33 preferably has a metal thin film or a film structure in which an oxide film, a metal thin film, and an oxide film are laminated in this order.

The thickness of the reflective film 33 is preferably 1 to 100 nm from the viewpoint that it can be utilized without disturbing the function of the irregular uneven structure formed on the surface of the first transparent layer 32 by the arithmetic average roughness Ra. 4-25 nm is more preferable.
The reflectivity of the reflective film 33 is sufficient to obtain a sufficient screen gain that can be recognized in terms of human visibility when the following reflectivity is obtained. The range is preferably 5% or more, and preferably 15%. The above is more preferable, and 30% or more is more preferable.

(Method for producing light scattering sheet)
An example of a method for manufacturing the light scattering sheet 30 will be described with reference to FIG.

  As shown in FIG. 2 (a), a mold 61 in which an irregular concavo-convex structure is formed on the surface by applying a photocurable resin 36 to the surface of the first transparent film 31, and the concavo-convex structure is photocurable. The photo-curing resin 36 is overlaid so as to be in contact with the resin 36.

  Light (ultraviolet light or the like) is irradiated from the first transparent film 31 side to cure the photocurable resin 36 to form the first transparent layer 32 in which the irregular uneven structure of the mold 61 is transferred to the surface. After that, the mold 61 is peeled off as shown in FIG.

  As shown in FIG. 2C, a metal is physically vapor-deposited on the surface of the first transparent layer 32 to form a reflective film 33 made of a metal thin film.

As shown in FIG. 2D, a photocurable resin 37 is applied to the surface of the reflective film 33, and the second transparent film 35 is overlaid on the photocurable resin 37.
By irradiating light (ultraviolet rays or the like) from the first transparent film 41 side or the second transparent film 35 side and curing the photo-curable resin 37 to form the second transparent layer 34, light The scattering sheet 30 is obtained.

Examples of the mold 61 include a resin film, a metal plate, and the like on which an irregular uneven structure is formed on the surface. Examples of the resin film having an irregular concavo-convex structure formed on the surface include a resin film containing fine particles and a resin film that has been sandblasted.
Examples of the method for applying the photocurable resin include a die coating method, a bar coating method, a gravure coating method, a spin coating method, an ink jet method, and a spray coating method.
Examples of physical vapor deposition include vacuum vapor deposition and sputtering.

(Optical characteristics of reflective video display transparent member)
The transmittance of the image display transparent member 1 is preferably 5% or more, more preferably 10% or more, and 20% from the viewpoint of good visibility of a scene seen from the other side of the image display transparent member 1 when viewed from the observer side. The above is preferable, and 30% or more is more preferable.
The transmittance of the image display transparent member 1 is preferably 90% or less, more preferably 80% or less, and even more preferably 75% or less, from the viewpoint of appropriately maintaining the screen gain (luminance).

The reflectance on the first surface A of the image display transparent member 1 is preferably 10% or less, more preferably 2% or less, and even more preferably 0.5% or less from the viewpoint of suppressing the reflection of the image light L.
The reflectance on the first surface A of the image display transparent member 1 is preferably 9% or more, more preferably 15% or more, and further preferably 30% or more from the viewpoint of increasing the screen gain (luminance).

The forward haze of the image display transparent member 1 is preferably 50% or less, more preferably 15% or less, and more preferably 10% from the viewpoint of good visibility of a scene seen from the viewer side as viewed from the viewer side. The following is more preferable.
The forward haze of the image display transparent member 1 is preferably 0.2% or more from the viewpoint of the compatibility between the visibility of the scene seen from the other side of the image display transparent member 1 and the screen characteristics when viewed from the viewer side. 0.5% or more is more preferable, and 0.8% or more is more preferable.

The rear haze of the image display transparent member 1 is preferably 5% or more, more preferably 10% or more, and further preferably 20% or more, from the viewpoint of securing a wide viewing angle.
The rear haze of the image display transparent member 1 is preferably 90% or less, and more preferably 80% or less, from the viewpoint of the visibility of the scene seen from the viewer side as viewed from the viewer side.

  The ratio of the rear haze to the front haze (rear haze / front haze) is preferably 0.8 or more, and more preferably 1 or more. If the back haze / forward haze is 1 or more, even if there is an environment of 100 lux or more in the range where the observer's line of sight viewing the image display transparent member 1 can reach, it is beyond the image display transparent member 1 when viewed from the observer side. The visibility of the sight seen on the side is good, and the projected image and the sight on the other side of the image display transparent member 1 can be seen. Such a video display transparent member 1 is suitable for being used in an environment where ambient light exists.

  The refractive index difference between adjacent layers in the image display transparent member 1 is preferably within 0.2 from the viewpoint that the reflectance at each layer interface is suppressed to within 0.5%, and the reflectance at each layer interface is 0.1. From the point which becomes about%, 0.1 or less is more preferable.

(Video display method)
As shown in FIG. 1, a video signal generated by the video generation device 400 and sent from the video generation device 400 is converted into video light L by the projector 200 and projected toward the video display transparent member 1.
The content of the video signal may be a still image or a moving image. The contents of the video signal include operation screens (buttons, letters, etc.) that prompt the observer X to operate, product advertisements, product descriptions, vehicle equipment status, destination guidance, items to be transmitted to the viewer X, movies TV programs, game screens, and the like.

The image light L projected from the projector 200, transmitted through the touch panel 300, and incident from the first surface A of the image display transparent member 1 is imaged by scattering at the reflection film 33, and is on the same side as the projector 200. Is displayed so as to be visible to the observer X in the room.
Moreover, since the reflective film 33 in the image display transparent member 1 transmits a part of the incident light, the scene S1 on the first surface A side is transmitted to the viewer Y on the second surface B side so as to be visible. In addition, the scene S2 on the second surface B side is visibly transmitted to the viewer X on the first surface A side.

  In the state where the observer X on the touch panel 300 side does not touch or approach the finger F or the like to the touch panel 300, the operation information is not sent from the touch panel 300 to the video generation device 400. In a state where there is no operation information from the touch panel 300, the video generation device 400 continues to generate the same video signal as before and continues to send the video signal to the projector 200 when the content of the video signal is a still image. In this case, the same image is always displayed on the image display transparent member 1. Note that the video generation apparatus 400 may change the content of the video signal every predetermined time and send the video signal to the projector 200 even when there is no operation information from the touch panel 300. In this case, the video displayed on the video display transparent member 1 is switched to another video, or a part of the video is changed.

  When the observer X on the touch panel 300 side operates the finger F or the like while touching or approaching the touch panel 300, the touch panel 300 detects an operation by the observer X and acquires operation information. The operation information is sent from the touch panel 300 to the video generation device 400. If the operation information matches a preset condition, the video generation device 400 changes the content of the video signal in accordance with the content of the operation information, and sends the video signal to the projector 200. In this case, the video displayed on the video display transparent member 1 is switched to another video, or a part of the video is changed. Note that when the operation information does not match a preset condition (for example, when the finger F or the like touches or approaches a location different from the operation screen (button, character, etc.)), the video generation device 400 When the content of the video signal is a still image, the same video signal as that immediately before is generated, and the video signal is sent to the projector 200. In this case, the image displayed on the image display transparent member 1 does not change.

(Mechanism of action)
In the video display system according to the first embodiment described above, the operation by the observer X on the side on which the video is displayed is detected, and the operation information from the touch panel 300 is acquired from the touch panel 300 that acquires the operation information. Since the image generation apparatus 400 that generates a corresponding image signal is provided, it is possible to perform interactive processing such as displaying an image for the observer X and changing the image in accordance with the operation of the observer X. it can.
For example, when the observer X wants to know more detailed information about a product or landscape seen from the video display transparent member 1 when viewed from the observer X on the touch panel 300 side, the observer X touches the finger F or the like on the touch panel. By operating by contacting or approaching 300, the information can be displayed and obtained as an image on the image display transparent member 1.
Moreover, since the detection means is the touch panel 300, an operation by the observer X on the touch panel 300 side is difficult to be erroneously detected, and an operation by the observer Y on the second surface B side is not detected. Moreover, since the detection means is the touch panel 300, a dedicated tool for operation is not necessary.

[Second Embodiment]
FIG. 3 is a schematic configuration diagram showing a second embodiment of the video display system of the present invention.
The video display system according to the second embodiment includes a reflective video display transparent member 1, a projector 200 installed on the first surface A side of the video display transparent member 1 and spaced from the video display transparent member 1, A touch panel 300 (detection means) disposed opposite to and spaced from the video display transparent member 1 on the first surface A side of the video display transparent member 1 so as not to transmit the video light L from the projector 200; 200 and a video generation device 400 connected to the touch panel 300.
Hereinafter, components having the same configuration as those of the video display system according to the first embodiment are denoted by the same reference numerals when illustrated. Detailed description of the same configuration as that of the video display system of the first embodiment is omitted.

(Video display method)
As shown in FIG. 3, a video signal generated by the video generation device 400 and sent from the video generation device 400 is converted into video light L by the projector 200 and projected toward the video display transparent member 1.
The image light L projected from the projector 200 and incident from the first surface A of the image display transparent member 1 without passing through the touch panel 300 is imaged by being scattered on the reflection film 33, and the projector 200. It is displayed so as to be visible as an image to the viewer X on the same side.
In the state where the observer X on the first surface A side does not touch or approach the finger F or the like to the touch panel 300, the image displayed on the image display transparent member 1 does not change as in the first embodiment.
When the observer X on the first surface A side operates the finger F or the like while touching or approaching the touch panel 300, the image displayed on the image display transparent member 1 is the same as in the first embodiment. , Switching to another video, or part of the video changes.

(Mechanism of action)
In the video display system of the second embodiment described above, the same configuration as that of the first embodiment exhibits the same mechanism of action as that of the first embodiment.
In addition, since the touch panel 300 is disposed at a position where the image light L from the projector 200 is not transmitted, the observer X on the touch panel 300 side operates the finger F or the like while touching or approaching the touch panel 300. The observer X does not block the image light L from the projector 200.

[Third Embodiment]
FIG. 4 is a schematic configuration diagram showing a third embodiment of the video display system of the present invention.
The video display system according to the third embodiment includes a transmissive video display transparent member 2, a projector 200 installed on the first surface A side of the video display transparent member 2 and spaced from the video display transparent member 2, A touch panel 300 (detection means) disposed so as to be in contact with the second surface B of the video display transparent member 2 and a video generation device 400 connected to the projector 200 and the touch panel 300 are provided.

(Detection means)
The touch panel 300 detects an operation by the observer Y when the observer Y on the touch panel 300 side touches or approaches the finger F or the like, and detects operation information (coordinates of contact points, changes in coordinates over time, number of contacts). Etc.) can be used.
The touch panel 300 detects, for example, a panel main body where the observer Y on the touch panel 300 side touches or approaches the finger F or the like, and a position where the finger F or the like touches or approaches the panel main body. And a position detection unit that acquires
Examples of the position detection method of the touch panel 300 include a resistance film method, a capacitance method, an infrared method, a surface acoustic wave method, and an electromagnetic induction method.

(Transparent video display transparent member)
FIG. 4 is a layer configuration diagram showing an example of a transmissive image display transparent member. Hereinafter, the same components as those of the video display transparent member 1 of FIG.
The transmissive image display transparent member 2 is a transparent member having a first surface A and a second surface B opposite to the first surface A, and the scene S1 on the first surface A side is changed to the second surface B side. Of the second surface B side so as to be visible to the viewer Y, and the image S2 that is visible to the viewer A on the first surface A side and is projected from the first surface A side. The light L is displayed so as to be visible as an image to the observer Y on the second surface B side.

In the video display transparent member 2, a light scattering sheet 40 is disposed between the first transparent base material 10 and the second transparent base material 20.
The first transparent substrate 10 and the light scattering sheet 40 are bonded by the adhesive layer 12, and the second transparent substrate 20 and the light scattering sheet 40 are bonded by the adhesive layer 22.
The video display transparent member 2 is intended to allow the viewer Y to visually recognize the video, but the viewer X existing on the opposite side of the viewer Y may simultaneously view the video.

(Light scattering sheet)
The light scattering sheet 40 includes: a first transparent film 41; a transparent layer 42 provided on the surface of the first transparent film 41; and the inside of the transparent layer 42 arranged in parallel with each other at a predetermined interval. A plurality of light scattering portions 43 extending in the plane direction and having a right-angled cross section in a direction perpendicular to the longitudinal direction; and a second transparent film 45 provided on the surface of the transparent layer 42. Hereinafter, a structure in which a plurality of light scattering portions 43 extending in a one-dimensional direction in a stripe shape is sometimes described as a louver structure.

(Transparent film)
The first transparent film 41 and the second transparent film 45 (hereinafter collectively referred to as a transparent film) may be a transparent resin film or a thin glass film. The material of each transparent film may be the same or different.
What is necessary is just to use the thing similar to the transparent film of the light-scattering sheet 30 mentioned above as a transparent film.

(Transparent layer)
The transparent layer 42 is preferably a transparent resin layer.
As the transparent resin constituting the transparent resin layer, the same transparent resin as that constituting the transparent resin layer of the light scattering sheet 30 described above may be used.

  The thickness of the transparent layer 42 is preferably 10 to 200 μm. When the thickness of the transparent layer 42 is 10 μm or more, the interval between the light scattering portions 43 is also 10 μm or more, and the effect of the louver structure is sufficiently exhibited. If the thickness of the transparent layer 42 is 200 μm or less, it is easy to form the transparent layer 42 by a roll-to-roll process.

(Light scattering part)
The light scattering portion 43 includes, for example, a transparent resin, a light scattering material, and, if necessary, a light absorbing material.

  Examples of the transparent resin contained in the light scattering portion 43 include a cured product of a photocurable resin (acrylic resin, epoxy resin, etc.), a cured product of a thermosetting resin, and a thermoplastic resin. The transparent resin contained in the light scattering portion 43 may be the same as or different from the transparent resin constituting the transparent layer 42.

  As light scattering material, fine particles of high refractive index material such as titanium oxide (refractive index: 2.5 to 2.7), zirconium oxide (refractive index: 2.4), aluminum oxide (refractive index: 1.76), etc. Fine particles of a low refractive index material such as porous silica (refractive index: 1.3 or lower), hollow silica (refractive index: 1.3 or lower), etc .; a resin material having a low refractive index with low compatibility with the transparent resin; crystal And a resin material having a thickness of 1 μm or less.

The concentration of the light scattering material is preferably from 0.01 to 5% by volume, more preferably from 0.05 to 1% by volume.
When the light scattering material is fine particles, the average particle diameter of the fine particles is preferably 0.05 to 1 μm, more preferably 0.15 to 0.8 μm. When the average particle diameter of the fine particles is approximately the same as or slightly smaller than the wavelength of the scattered light, the probability of being scattered forward increases, and the function of scattering incident light without refracting becomes stronger. As a result, the distortion of the scene seen beyond the video display transparent member 2 when viewed from the observer side is suppressed, and the amount of light is not changed abruptly, thereby improving the visibility of the scene.

When the light scattering portion 43 includes a light absorbing material, a part of light propagating as unnecessary stray light in the image display transparent member 2 can be absorbed, and scattered light is reduced. Therefore, the phenomenon that the image display transparent member 2 appears cloudy is suppressed, the contrast of the image is improved, and the visibility of the image is improved. Further, the contrast of the scene seen from the other side of the image display transparent member 2 when viewed from the observer side is improved, and the visibility of the scene is also improved. In particular, when an environment of 100 lux or more is present in the observer's line of sight due to external light, the above-described effect is easily obtained.
Examples of the light absorbing material include carbon black and titanium black.
The concentration of the light absorbing material is preferably from 0.01 to 10% by volume, more preferably from 0.1 to 3% by volume.

  The interval between the light scattering portions 43 (the distance between the centers of the adjacent light scattering portions 43) is preferably 10 to 250 μm, and more preferably 10 to 100 μm. If the interval between the light scattering portions 43 is 10 μm or more, the light scattering portions 43 are easily formed. If the space | interval of the light-scattering part 43 is 250 micrometers or less, the light-scattering part 43 will be hard to visually recognize.

  10-70% of the space | interval of the light-scattering part 43 is preferable, and the width | variety (direction orthogonal to the longitudinal direction of the light-scattering part 43 of the surface direction of the light-scattering sheet 40) of the light-scattering part 43 is more preferable. . If the width of the light scattering portion 43 is 10% or more of the interval between the light scattering portions 43, the light scattering portion 43 is easily formed. If the width of the light scattering portion 43 is 70% or less of the interval between the light scattering portions 43, the transmittance of the light scattering portion 43 and the visibility of the scene seen beyond the image display transparent member 2 when viewed from the observer side. Will improve.

  The ratio of the height of the light scattering portion 43 to the width of the light scattering portion 43 (the direction orthogonal to the surface direction of the light scattering sheet 40), that is, the aspect ratio is relative to the improvement in transmittance and the in-plane direction of the light scattering sheet 40. Thus, when the center of the optical axis of the image light L is not vertical, 1 or more is preferable, 1.5 or more is more preferable, and 2 or more is more preferable.

(Method for producing light scattering sheet)
An example of a method for manufacturing the light scattering sheet 40 will be described with reference to FIG.

  As shown to Fig.5 (a), the photocuring resin 46 was apply | coated to the surface of the 1st transparent film 41, and the several protrusion with the cross-sectional right triangle corresponding to the light-scattering part 43 was formed in the surface. The mold 62 is overlaid on the photocurable resin 46 so that the ridges are in contact with the photocurable resin 46.

  Light (ultraviolet rays or the like) is irradiated from the side of the first transparent film 41 to cure the photocurable resin 46, thereby forming a transparent layer lower layer 42a having grooves 44 corresponding to the protrusions of the mold 62 formed on the surface. Then, as shown in FIG. 5B, the mold 62 is peeled off.

  As shown in FIG. 5 (c), a paste containing a light curable resin, a light scattering material, and, if necessary, a light absorbing material is supplied to the surface of the transparent layer lower layer 42a, and the excess is scraped off with a doctor blade. Thus, the paste 48 is embedded in the groove 44 of the transparent layer lower layer 42a. The light scattering part 43 is formed by irradiating light (ultraviolet light or the like) and curing the paste 48.

As shown in FIG. 5D, a photocurable resin 47 is applied to the surface of the transparent layer lower layer 42 a and the surface of the light scattering portion 43, and the second transparent film 45 is overlaid on the photocurable resin 47.
The light scattering sheet 40 is formed by irradiating light (ultraviolet rays or the like) from the first transparent film 41 side or the second transparent film 45 side to cure the photocurable resin 47 to form a transparent layer upper layer. Get.

Examples of the mold 62 include a resin film having a plurality of convex portions formed on the surface, a metal plate, and the like.
Examples of the method for applying the photocurable resin include a die coating method, a bar coating method, a gravure coating method, a spin coating method, an ink jet method, and a spray coating method.

(Optical characteristics of transparent image display transparent member)
The transmittance of the image display transparent member 2 is preferably 5% or more, more preferably 20% or more, and 40% from the viewpoint of good visibility of a scene seen from the other side of the image display transparent member 2 when viewed from the observer side. The above is more preferable.

  The reflectance on the first surface A of the image display transparent member 2 is preferably 15% or less, more preferably 10% or less, from the viewpoint of increasing the screen gain (luminance).

The forward haze of the image display transparent member 2 is preferably 4% or more, more preferably 5% or more, and further preferably 8% or more, from the viewpoint of maintaining a wide viewing angle of the projected image.
The forward haze of the image display transparent member 2 is preferably 40% or less, and more preferably 20% or less, in order to ensure the visibility of the scene.

  The difference between the refractive index of the transparent layer 42 and the refractive index of the light scattering portion 43 in the image display transparent member 2 is preferably 0.01 or less, more preferably 0.005 or less, and further preferably 0.001 or less. When the difference between the refractive index of the transparent layer 42 and the refractive index of the light scattering portion 43 is large, a plurality of scenes appearing on the other side of the image display transparent member 2 when viewed from the viewer side are seen. The transparent layer 42 and the light scattering portion 43 preferably have the same refractive index from the viewpoint of suppressing rainbow unevenness and spectroscopic spectacles.

  The difference between the refractive index of the transparent film and the refractive index of the transparent layer 42 in the image display transparent member 2 is preferably as small as possible. The difference between the refractive index of the transparent film and the refractive index of the transparent layer 42 is preferably 0.1 or less, more preferably 0.05 or less, still more preferably 0.01 or less, and particularly preferably 0.001 or less.

(Video display method)
As shown in FIG. 4, the video signal generated by the video generation device 400 and sent from the video generation device 400 is converted into video light L by the projector 200 and projected toward the video display transparent member 2.
The content of the video signal may be a still image or a moving image. The contents of the video signal include operation screens (buttons, letters, etc.) that prompt the viewer Y to operate, product advertisements, product descriptions, vehicle equipment status, destination guidance, items to be transmitted to the viewer Y, movies TV programs, game screens, and the like.

The image light L projected from the projector 200 and incident from the first surface A of the image display transparent member 2 is imaged by being scattered by the light scattering portion 43, and is an observer Y on the opposite side of the projector 200. Is displayed as a visual image.
Further, since the gap between the light scattering portions 43 in the image display transparent member 2 transmits light, the scene S1 on the first surface A side is transmitted so as to be visible to the viewer Y on the second surface B side, In addition, the scene S2 on the second surface B side is transmitted to the viewer X on the first surface A side so as to be visible.

  When the observer Y on the touch panel 300 side does not touch or approach the finger F or the like with the touch panel 300, the operation information is not sent from the touch panel 300 to the video generation device 400. In a state where there is no operation information from the touch panel 300, the video generation device 400 continues to generate the same video signal as before and continues to send the video signal to the projector 200 when the content of the video signal is a still image. In this case, the same image is always displayed on the image display transparent member 2. Note that the video generation apparatus 400 may change the content of the video signal every predetermined time and send the video signal to the projector 200 even when there is no operation information from the touch panel 300. In this case, the video displayed on the video display transparent member 2 is switched to another video, or a part of the video is changed.

  When the observer Y on the touch panel 300 side operates the finger F or the like while touching or approaching the touch panel 300, the touch panel 300 detects an operation by the observer Y and acquires operation information. The operation information is sent from the touch panel 300 to the video generation device 400. If the operation information matches a preset condition, the video generation device 400 changes the content of the video signal in accordance with the content of the operation information, and sends the video signal to the projector 200. In this case, the video displayed on the video display transparent member 2 is switched to another video, or a part of the video is changed. Note that when the operation information does not match a preset condition (for example, when the finger F or the like touches or approaches a location different from the operation screen (button, character, etc.)), the video generation device 400 When the content of the video signal is a still image, the same video signal as that immediately before is generated, and the video signal is sent to the projector 200. In this case, the image displayed on the image display transparent member 2 does not change.

(Mechanism of action)
In the video display system of the third embodiment described above, the operation by the observer Y on the side where the video is displayed is detected, and the operation information from the touch panel 300 is acquired according to the content of the operation information from the touch panel 300. Since the video generation device 400 that generates the corresponding video signal is provided, it is possible to display the video to the observer Y and perform interactive processing such as changing the video according to the operation of the observer Y and the like. it can.
For example, when the observer Y wants to know more detailed information about a product or landscape seen from the video display transparent member 2 when viewed from the observer Y on the touch panel 300 side, the observer Y touches the finger F or the like on the touch panel. By operating by contacting or approaching 300, the information can be displayed and obtained as an image on the image display transparent member 2.
Moreover, since the detection means is the touch panel 300, an operation by the observer Y on the touch panel 300 side is not easily detected, and an operation by the observer X on the first surface A side is not detected. Moreover, since the detection means is the touch panel 300, a dedicated tool for operation is not necessary.
Further, since the projector 200 is arranged on the opposite side of the image display transparent member 2 from the observer Y, the observer Y does not block the image light L from the projector 200.

[Fourth Embodiment]
FIG. 6 is a schematic configuration diagram showing a fourth embodiment of the video display system of the present invention.
The video display system according to the fourth embodiment includes a reflective video display transparent member 1, a projector 200 installed on the first surface A side of the video display transparent member 1 and spaced from the video display transparent member 1, A motion capture 310 (detection means) for detecting the motion of the observer X from the second surface B side to the first surface A side of the video display transparent member 1 and acquiring motion information, and the projector 200 and the motion capture 310 And a video generation device 410 connected to.
Hereinafter, components having the same configuration as those of the video display system according to the first embodiment are denoted by the same reference numerals when illustrated. Detailed description of the same configuration as that of the video display system of the first embodiment is omitted.

(Detection means)
The motion capture 310 is installed on the opposite side of the video display transparent member 1 with respect to the viewer X on the side where the video is displayed, and receives a light from the viewer X through the video display transparent member 1 and the camera 312. And an image processing device 314 that detects the motion of the observer X based on the image information from the camera 312 and acquires the motion information.
Examples of the camera 312 include a normal digital camera.
The camera 312 may be installed on the first surface A side of the image display transparent member 1. In that case, the projector 200 and the camera 312 may be incorporated in the same housing. In this case, the camera 312 may detect the movement by observing the movement of the virtual image of the observer X through the video display transparent member 1.

The image processing device 314 includes, for example, an image processing unit, an interface unit, and a storage unit.
The interface unit connects the camera 312, the video generation device 410, and the like and the image processing unit by wire or wirelessly.
The storage unit stores image information, setting conditions, and the like.
The image processing unit detects the operation of the observer X based on image information from the camera 312, setting conditions stored in the storage unit, and the like, and acquires operation information.

The image processing unit may be realized by dedicated hardware, and the image processing unit includes a memory and a central processing unit (CPU), and a program for realizing the functions of the image processing unit. The function may be realized by loading the program into a memory and executing it.
Further, a dedicated input device, a display device, or the like may be connected to the image processing device 314 as a peripheral device. An input device refers to an input device such as a display touch panel, a switch panel, or a keyboard, and a display device refers to a CRT, a liquid crystal display device, or the like.
Further, the image processing device 314 and the video generation device 410 may be combined into one device.

(Video generator)
The video generation device 410 may be any device that can generate a video signal and change the content of the video signal when a preset condition is satisfied.
The video generation device 410 includes, for example, a video signal generation unit, an interface unit, and a storage unit.
The interface unit connects the projector 200, the image processing apparatus, and the like to the video signal generation unit by wire or wirelessly.
The storage unit stores a video signal, setting conditions, and the like.
The video signal generation unit generates a video signal based on operation information from the image processing apparatus, setting conditions stored in the storage unit, and the like. Specifically, when there is no operation information from the image processing apparatus, a video signal corresponding to the operation information is generated, and when there is operation information from the image processing apparatus, a video signal corresponding to the content is generated.

Note that the video signal generation unit may be realized by dedicated hardware, and the video signal generation unit includes a memory and a central processing unit (CPU), and realizes the function of the video signal generation unit. The function may be realized by loading the program for loading into the memory and executing the program.
In addition, a dedicated input device, a display device, or the like may be connected to the video generation device 410 as a peripheral device. An input device refers to an input device such as a display touch panel, a switch panel, or a keyboard, and a display device refers to a CRT, a liquid crystal display device, or the like.

(Video display method)
As shown in FIG. 6, the video signal generated by the video generation device 410 and sent from the video generation device 410 is converted into video light L by the projector 200 and projected toward the video display transparent member 1.
The content of the video signal may be a still image or a moving image. The contents of the video signal include operation screens (buttons, letters, etc.) that prompt the observer X to operate, product advertisements, product descriptions, vehicle equipment status, destination guidance, items to be transmitted to the viewer X, movies TV programs, game screens, and the like.

The image light L projected from the projector 200 and incident from the first surface A of the image display transparent member 1 forms an image by being scattered by the reflection film 33 and is directed to the viewer X on the same side as the projector 200. It is displayed so as to be visible as an image.
Further, since the reflection film 33 in the image display transparent member 1 transmits part of the incident light, the scene on the first surface A side is transmitted to the viewer on the second surface B side so as to be visible, and The scene on the second surface B side is transmitted to the viewer X on the first surface A side so as to be visible.

  In a state where the observer X on the first surface A side does not perform an effective motion, motion information is not sent from the motion capture 310 to the video generation device 410. In a state where there is no operation information from the motion capture 310, the video generation device 410 continues to generate the same video signal as before and continues to send the video signal to the projector 200 when the content of the video signal is a still image. In this case, the same image is always displayed on the image display transparent member 1. Note that the video generation device 410 may change the content of the video signal every predetermined time and send the video signal to the projector 200 even when there is no operation information from the motion capture 310. In this case, the video displayed on the video display transparent member 1 is switched to another video, or a part of the video is changed.

  When the viewer X on the first surface A side performs an effective motion, the motion capture 310 detects the motion of the viewer X and acquires motion information. The motion information is sent from the motion capture 310 to the video generation device 410. When the motion information matches a preset condition, the video generation device 410 changes the content of the video signal in accordance with the content of the motion information, and sends the video signal to the projector 200. In this case, the video displayed on the video display transparent member 1 is switched to another video, or a part of the video is changed. Note that if the operation information does not match a preset condition, the video generation device 410 generates the same video signal as before when the content of the video signal is a still image, and sends the video signal to the projector 200. send. In this case, the image displayed on the image display transparent member 1 does not change.

(Mechanism of action)
In the video display system of the fourth embodiment described above, the motion capture 310 that detects the motion by the viewer X on the side where the video is displayed and acquires motion information, and the motion information from the motion capture 310 Since the video generation device 410 that generates the video signal corresponding to the content is provided, the video is displayed to the observer X and interactive processing such as changing the video according to the operation of the observer X is performed. be able to.
For example, at an attraction such as an amusement park, the observer X uses the entire body to manipulate the character displayed as if it floated in the air on the image display transparent member 1 directly. Can provide entertainment with higher attractions.
In addition, since the image display transparent member 1 can visibly transmit the scene on the first surface A side to the camera 312 on the second surface B side, the camera 312 is connected to the viewer X on the side on which the image is displayed. Can be installed on the opposite side of the image display transparent member 1. Therefore, since the observer X is not conscious of the camera 312 and the camera 312 can catch the observer X from the front, the operation of the observer X can be accurately photographed, and the video display transparent member 1 Since the haze is low, the observer X can be photographed with high accuracy by the camera 312, so that erroneous detection can be prevented.
In addition, since the detection means is the motion capture 310, it is not necessary to arrange a member for reducing visibility such as a touch panel on the front surface of the video display transparent member 1. Further, since the detection means is the motion capture 310, a dedicated tool for operation is not necessary.
Further, since the operation can be performed even when the observer X is away from the image display transparent member 1, the observer X does not block the image light L from the projector 200.

[Fifth Embodiment]
FIG. 7 is a schematic configuration diagram showing a fifth embodiment of the video display system of the present invention.
The video display system according to the fifth embodiment includes a transmissive video display transparent member 2, a projector 200 installed on the first surface A side of the video display transparent member 2 and spaced from the video display transparent member 2, A motion capture 310 (detection means) that detects the motion of the observer Y from the first surface A side to the second surface B side of the video display transparent member 2 and acquires motion information, and the projector 200 and the motion capture 310 And a video generation device 410 connected to.
Hereinafter, components having the same configuration as the video display systems of the first, third, and fourth embodiments are denoted by the same reference numerals when illustrated. Detailed descriptions of the same configurations as those of the video display systems of the first, third, and fourth embodiments are omitted.

(Detection means)
The motion capture 310 is installed on the opposite side of the video display transparent member 2 with respect to the viewer Y on the side where the video is displayed, and receives a light from the viewer Y through the video display transparent member 2. And an image processing device 314 that detects the motion of the observer Y based on the image information from the camera 312 and acquires the motion information.
The projector 200 and the camera 312 may be incorporated in the same housing.
The camera 312 may be installed on the first surface B side of the video display transparent member 2.
In this case, the camera 312 may detect the movement by observing the movement of the virtual image of the observer Y through the video display transparent member 1.
The image processing unit of the image processing device 314 detects the operation of the observer Y based on the image information from the camera 312, the setting conditions stored in the storage unit, and acquires the operation information.

(Video display method)
As shown in FIG. 7, a video signal generated by the video generation device 410 and sent from the video generation device 410 is converted into video light L by the projector 200 and projected toward the video display transparent member 2.
The content of the video signal may be a still image or a moving image. The contents of the video signal include operation screens (buttons, letters, etc.) that prompt the viewer Y to operate, product advertisements, product descriptions, vehicle equipment status, destination guidance, items to be transmitted to the viewer Y, movies TV programs, game screens, and the like.

The image light L projected from the projector 200 and incident from the first surface A of the image display transparent member 2 is imaged by being scattered by the light scattering portion 43, and is an observer Y on the opposite side of the projector 200. Is displayed as a visual image.
In addition, since the gap between the light scattering portions 43 in the image display transparent member 2 transmits light, the scene on the first surface A side is visibly transmitted to the viewer Y on the second surface B side, and The scene on the second surface B side is transmitted to the viewer on the first surface A side so as to be visible.

  In a state where the observer Y on the second surface B side does not perform an effective motion, motion information is not sent from the motion capture 310 to the video generation device 410. In a state where there is no operation information from the motion capture 310, the video generation device 410 continues to generate the same video signal as before and continues to send the video signal to the projector 200 when the content of the video signal is a still image. In this case, the same image is always displayed on the image display transparent member 2. Note that the video generation device 410 may change the content of the video signal every predetermined time and send the video signal to the projector 200 even when there is no operation information from the motion capture 310. In this case, the video displayed on the video display transparent member 2 is switched to another video, or a part of the video is changed.

  When the viewer Y on the second surface B side performs an effective motion, the motion capture 310 detects the motion of the viewer Y and acquires motion information. The motion information is sent from the motion capture 310 to the video generation device 410. When the motion information matches a preset condition, the video generation device 410 changes the content of the video signal in accordance with the content of the motion information, and sends the video signal to the projector 200. In this case, the video displayed on the video display transparent member 2 is switched to another video, or a part of the video is changed. Note that if the operation information does not match a preset condition, the video generation device 410 generates the same video signal as before when the content of the video signal is a still image, and sends the video signal to the projector 200. send. In this case, the image displayed on the image display transparent member 2 does not change.

(Mechanism of action)
In the video display system of the fifth embodiment described above, the motion capture 310 that detects the motion by the viewer Y on the side on which the video is displayed and acquires motion information, and the motion information from the motion capture 310 Since the video generation device 410 that generates the video signal corresponding to the content is provided, the video is displayed to the observer Y and interactive processing such as changing the video according to the operation of the observer Y is performed. be able to.
For example, at an attraction such as an amusement park, the observer Y can operate the character displayed as if it floats in the air on the video display transparent member 2 more intuitively and directly using the entire body. Can provide entertainment with higher attractions.
In addition, since the image display transparent member 2 can visibly transmit the scene on the second surface B side to the camera 312 on the first surface A side, the camera 312 is connected to the viewer Y on the image display side. Can be installed on the opposite side across the image display transparent member 2. Therefore, since the observer Y is not conscious of the camera 312 and the camera 312 can catch the observer Y from the front, the operation of the observer Y can be accurately photographed, and the video display transparent member 2 Since the haze is low, the observer Y can be photographed with high accuracy by the camera 312, so that erroneous detection can be prevented.
In addition, since the detection means is the motion capture 310, it is not necessary to arrange a member for reducing visibility such as a touch panel on the front surface of the video display transparent member 2. Further, since the detection means is the motion capture 310, a dedicated tool for operation is not necessary.
Further, since the projector 200 is arranged on the opposite side of the image display transparent member 2 from the observer Y, the observer Y does not block the image light L from the projector 200.

[Sixth Embodiment]
FIG. 8 is a schematic configuration diagram showing a sixth embodiment of the video display system of the present invention.
The video display system according to the sixth embodiment includes a reflective video display transparent member 1, a projector 200 disposed on the first surface A side of the video display transparent member 1 and spaced from the video display transparent member 1, A motion capture 320 (detection means) that detects the motion of the observer X from the second surface B side to the first surface A side of the video display transparent member 1 and acquires motion information, and the projector 200 and the motion capture 320. And a video generation device 410 connected to.
Hereinafter, components having the same configurations as those of the video display systems of the first and fourth embodiments are denoted by the same reference numerals when illustrated. Detailed descriptions of the same configurations as those of the video display systems of the first and fourth embodiments are omitted.

(Detection means)
The motion capture 320 is installed on the opposite side of the video display transparent member 1 with respect to the viewer X on the side where the video is displayed, and the infrared light source 322 that irradiates the viewer X with infrared rays, and the side on which the video is displayed The observer X is placed on the opposite side of the image display transparent member 1 and receives infrared rays (reflected light) from the observer X through the image display transparent member 1 and from the infrared camera 324. And an image processing device 326 that detects the motion of the observer X based on the image information and acquires the motion information.

The motion capture 320 measures a distance to the observer X by a distance image sensor (depth sensor) using an infrared light source 322 and an infrared camera 324, and detects an operation based on a change in the distance. Examples of the distance measurement method include a Light Coding method that performs infrared random dot pattern projection, and a Time Of Flight (TOF) method that measures the flight time of infrared pulses.
The infrared light source 322 and the infrared camera 324 may be installed on the first surface A side of the image display transparent member 1. In that case, the projector 200, the infrared light source 322, and the infrared camera 324 may be incorporated in the same casing.

The image processing device 326 includes, for example, an image processing unit, an interface unit, and a storage unit.
The interface unit connects the infrared light source 322, the infrared camera 324, the video generation device 410, and the like to the image processing unit by wire or wirelessly.
The storage unit stores image information, setting conditions, and the like.
The image processing unit detects the operation of the observer X based on the irradiation light information from the infrared light source 322, the image information from the infrared camera 324 (reflected light information), the setting conditions stored in the storage unit, and the like. Is something to get.

The image processing unit may be realized by dedicated hardware, and the image processing unit includes a memory and a central processing unit (CPU), and a program for realizing the functions of the image processing unit. The function may be realized by loading the program into a memory and executing it.
Further, a dedicated input device, a display device, or the like may be connected to the image processing device 326 as a peripheral device. An input device refers to an input device such as a display touch panel, a switch panel, or a keyboard, and a display device refers to a CRT, a liquid crystal display device, or the like.
Further, the image processing device 326 and the video generation device 410 may be combined into one device.

(Video display method)
The video display method by the video display system of the sixth embodiment is the same as the video display method by the video display system of the fourth embodiment, except that the motion capture 310 of the fourth embodiment is changed to the motion capture 320. Detailed description will be omitted.

(Mechanism of action)
The video display system of the sixth embodiment is the same as the video display system of the fourth embodiment except that the motion capture 310 of the fourth embodiment is changed to the motion capture 320, and the same operation as the fourth embodiment. Demonstrate the mechanism.

[Seventh Embodiment]
FIG. 9 is a schematic configuration diagram showing a seventh embodiment of the video display system of the present invention.
The video display system according to the seventh embodiment includes a transmissive video display transparent member 2, a projector 200 installed on the first surface A side of the video display transparent member 2 and spaced from the video display transparent member 2, A motion capture 320 (detection means) that detects the motion of the observer Y from the first surface A side to the second surface B side of the image display transparent member 2 and acquires motion information, and the projector 200 and the motion capture 320. And a video generation device 410 connected to.
Hereinafter, components having the same configuration as the video display systems of the first, third, fourth, and sixth embodiments are denoted by the same reference numerals when illustrated. Detailed descriptions of the same configurations as those of the video display systems of the first, third, fourth, and sixth embodiments are omitted.

(Detection means)
The motion capture 320 is installed on the opposite side of the video display transparent member 2 with respect to the viewer Y on the side where the video is displayed, and the infrared light source 322 that irradiates the viewer Y with infrared rays, and the side on which the video is displayed The observer Y is placed on the opposite side of the image display transparent member 2, and receives infrared rays (reflected light) from the observer Y through the image display transparent member 2 and from the infrared camera 324. And an image processing device 326 that detects the motion of the observer Y based on the image information and acquires the motion information.
The projector 200, the infrared light source 322, and the infrared camera 324 may be incorporated in the same casing.
The infrared light source 322 and the infrared camera 324 may be installed on the first surface B side of the image display transparent member 2.
The image processing unit of the image processing device 326 performs the operation of the observer Y based on irradiation light information from the infrared light source 322, image information from the infrared camera 324 (reflected light information), setting conditions stored in the storage unit, and the like. Detect and obtain operation information.

(Video display method)
The video display method or the like by the video display system of the seventh embodiment is the same as the video display method or the like by the video display system of the fifth embodiment except that the motion capture 310 of the fifth embodiment is changed to the motion capture 320. Detailed description will be omitted.

(Mechanism of action)
The video display system of the seventh embodiment is the same as the video display system of the fifth embodiment except that the motion capture 310 of the fifth embodiment is changed to the motion capture 320, and the same operation as the fifth embodiment. Demonstrate the mechanism.

[Eighth Embodiment]
FIG. 10 is a schematic configuration diagram showing an eighth embodiment of the video display system of the present invention.
The video display system according to the eighth embodiment includes a reflective video display transparent member 1, a projector 200 installed on the first surface A side of the video display transparent member 1 and spaced apart from the video display transparent member 1, A portable terminal 330 (detection means) carried by the observer X on the first surface A side, and a video generation device 430 connected to the projector 200 and the portable terminal 330 are provided.
Hereinafter, components having the same configuration as those of the video display system according to the first embodiment are denoted by the same reference numerals when illustrated. Detailed description of the same configuration as that of the video display system of the first embodiment is omitted.

(Detection means)
The portable terminal 330 has a wireless connection function, and when the observer X on the first surface A side operates the finger F or the like while touching or approaching the touch panel 332 of the portable terminal 330, the observer X performs the operation. Any device can be used as long as it can detect an operation and acquire operation information (coordinates of contact points, changes in coordinates over time, number of times of contact, etc.).
Examples of the portable terminal 330 include a smartphone and a tablet PC.

(Video generator)
The video generation device 430 may be any device that can generate a video signal and change the content of the video signal when a preset condition is satisfied.
The video generation device 430 includes, for example, a video signal generation unit, an interface unit, and a storage unit.
The interface unit connects the projector 200, the portable terminal 330, and the like and the video signal generation unit by wire or wirelessly.
The storage unit stores a video signal, setting conditions, and the like.
The video signal generation unit generates a video signal based on operation information from the portable terminal 330, setting conditions stored in the storage unit, and the like. Specifically, when there is no operation information from the mobile terminal 330, a video signal corresponding to the operation information is generated, and when there is operation information from the mobile terminal 330, a video signal corresponding to the content is generated.

Note that the video signal generation unit may be realized by dedicated hardware, and the video signal generation unit includes a memory and a central processing unit (CPU), and realizes the function of the video signal generation unit. The function may be realized by loading the program for loading into the memory and executing the program.
In addition, a dedicated input device, a display device, or the like may be connected to the video generation device 430 as a peripheral device. An input device refers to an input device such as a display touch panel, a switch panel, or a keyboard, and a display device refers to a CRT, a liquid crystal display device, or the like.

(Video display method)
As shown in FIG. 10, the video signal generated by the video generation device 430 and sent from the video generation device 430 is converted into video light L by the projector 200 and projected toward the video display transparent member 1.
The content of the video signal may be a still image or a moving image. The contents of the video signal include operation screens (buttons, letters, etc.) that prompt the observer X to operate, product advertisements, product descriptions, vehicle equipment status, destination guidance, items to be transmitted to the viewer X, movies TV programs, game screens, and the like.

The image light L projected from the projector 200 and incident from the first surface A of the image display transparent member 1 forms an image by being scattered by the reflection film 33 and is directed to the viewer X on the same side as the projector 200. It is displayed so as to be visible as an image.
Further, since the reflection film 33 in the image display transparent member 1 transmits part of the incident light, the scene on the first surface A side is transmitted to the viewer on the second surface B side so as to be visible, and The scene on the second surface B side is transmitted to the viewer X on the first surface A side so as to be visible.

  At the same time that the video is displayed on the video display transparent member 1, at the portable terminal 330, for example, at least the viewer X among the video signals generated by the video generation device 430 and sent from the video generation device 430 is operated. A nodding operation screen (buttons, characters, etc.) is displayed.

  In a state where the observer X on the first surface A side does not touch or approach the finger F or the like with the touch panel 332 of the mobile terminal 330, operation information is not sent from the mobile terminal 330 to the video generation device 430. In a state where there is no operation information from the mobile terminal 330, the video generation device 430 continues to generate the same video signal as before and continues to send the video signal to the projector 200 when the content of the video signal is a still image. In this case, the same image is always displayed on the image display transparent member 1. Note that the video generation device 430 may change the content of the video signal every predetermined time and send the video signal to the projector 200 even when there is no operation information from the portable terminal 330. In this case, the video displayed on the video display transparent member 1 is switched to another video, or a part of the video is changed.

  When the observer X on the first surface A side operates the finger F or the like while touching or approaching the touch panel 332 of the portable terminal 330, the portable terminal 330 detects the operation by the observer X and acquires operation information. To do. The operation information is sent from the mobile terminal 330 to the video generation device 430. When the operation information matches a preset condition, the video generation device 430 changes the content of the video signal in accordance with the content of the operation information, and sends the video signal to the projector 200. In this case, the video displayed on the video display transparent member 1 is switched to another video, or a part of the video is changed. When the operation information does not match the preset condition (for example, when the finger F or the like touches or approaches a location different from the operation screen (button, character, etc.)), the video generation device 430 When the content of the video signal is a still image, the same video signal as that immediately before is generated, and the video signal is sent to the projector 200. In this case, the image displayed on the image display transparent member 1 does not change.

(Mechanism of action)
The video display system of the eighth embodiment is the same as the video display system of the first embodiment except that the touch panel 300 of the first embodiment is made independent as the mobile terminal 330, and the same operation as the first embodiment. Demonstrate the mechanism.
Moreover, since the touch panel 300 according to the first embodiment is made independent as the mobile terminal 330, there is no need to arrange a member that reduces visibility, such as a touch panel, on the front surface of the video display transparent member 1.
Further, since the operation can be performed even when the observer X is away from the image display transparent member 1, the observer X does not block the image light L from the projector 200.

[Ninth Embodiment]
FIG. 11 is a schematic configuration diagram showing a ninth embodiment of the video display system of the present invention.
The image display system according to the ninth embodiment includes a transmissive image display transparent member 2, a projector 200 installed on the first surface A side of the image display transparent member 2 and spaced from the image display transparent member 2; A portable terminal 330 (detection means) carried by an observer Y on the second surface B side, and a video generator 430 connected to the projector 200 and the portable terminal 330 are provided.
Hereinafter, components having the same configuration as the video display systems of the first, third, and eighth embodiments are denoted by the same reference numerals when illustrated. Detailed descriptions of the same configurations as those of the video display systems of the first, third, and eighth embodiments are omitted.

(Detection means)
The portable terminal 330 has a wireless connection function, and when the observer Y on the second surface B side operates the finger F or the like while touching or approaching the touch panel 332 of the portable terminal 330, the observer Y performs the operation. Any device can be used as long as it can detect an operation and acquire operation information (coordinates of contact points, changes in coordinates over time, number of times of contact, etc.).

(Video display method)
As shown in FIG. 11, a video signal generated by the video generation device 430 and sent from the video generation device 430 is converted into video light L by the projector 200 and projected toward the video display transparent member 2.
The content of the video signal may be a still image or a moving image. The contents of the video signal include operation screens (buttons, letters, etc.) that prompt the viewer Y to operate, product advertisements, product descriptions, vehicle equipment status, destination guidance, items to be transmitted to the viewer Y, movies TV programs, game screens, and the like.

The image light L projected from the projector 200 and incident from the first surface A of the image display transparent member 2 is imaged by being scattered by the light scattering portion 43, and is an observer Y on the opposite side of the projector 200. Is displayed as a visual image.
In addition, since the gap between the light scattering portions 43 in the image display transparent member 2 transmits light, the scene on the first surface A side is visibly transmitted to the viewer Y on the second surface B side, and The scene on the second surface B side is transmitted to the viewer on the first surface A side so as to be visible.

  At the same time that the video is displayed on the video display transparent member 2, at the portable terminal 330, for example, at least the viewer Y operates among the video signals generated by the video generation device 430 and sent from the video generation device 430. A nodding operation screen (buttons, characters, etc.) is displayed.

  In a state where the observer Y on the second surface B side does not touch or approach the finger F or the like with the touch panel 332 of the mobile terminal 330, the operation information is not sent from the mobile terminal 330 to the video generation device 430. In a state where there is no operation information from the mobile terminal 330, the video generation device 430 continues to generate the same video signal as before and continues to send the video signal to the projector 200 when the content of the video signal is a still image. In this case, the same image is always displayed on the image display transparent member 2. Note that the video generation device 430 may change the content of the video signal every predetermined time and send the video signal to the projector 200 even when there is no operation information from the portable terminal 330. In this case, the video displayed on the video display transparent member 2 is switched to another video, or a part of the video is changed.

  When the observer Y on the second surface B side operates the finger F or the like while touching or approaching the touch panel 332 of the portable terminal 330, the portable terminal 330 detects the operation by the observer Y and acquires operation information. To do. The operation information is sent from the mobile terminal 330 to the video generation device 430. When the operation information matches a preset condition, the video generation device 430 changes the content of the video signal in accordance with the content of the operation information, and sends the video signal to the projector 200. In this case, the video displayed on the video display transparent member 2 is switched to another video, or a part of the video is changed. When the operation information does not match the preset condition (for example, when the finger F or the like touches or approaches a location different from the operation screen (button, character, etc.)), the video generation device 430 When the content of the video signal is a still image, the same video signal as that immediately before is generated, and the video signal is sent to the projector 200. In this case, the image displayed on the image display transparent member 2 does not change.

(Mechanism of action)
The video display system of the ninth embodiment is the same as the video display system of the third embodiment except that the touch panel 300 of the third embodiment is made independent as the mobile terminal 330, and the same operation as the third embodiment. Demonstrate the mechanism.
In addition, since the touch panel 300 of the third embodiment is made independent as the mobile terminal 330, there is no need to arrange a member that lowers the visibility such as a touch panel on the front surface of the video display transparent member 2.

[Tenth embodiment]
FIG. 12 is a schematic configuration diagram showing a tenth embodiment of the video display system of the present invention.
The video display system according to the tenth embodiment includes a reflective video display transparent member 1, a projector 200 that is installed on the first surface A side of the video display transparent member 1 and spaced from the video display transparent member 1; A laser pointer 500 possessed by the observer X on the first surface A side, and a position detection means 340 (detection means) for detecting the indicated position of the image display transparent member 1 indicated by the laser light P from the laser pointer 500. The image generation device 410 connected to the projector 200 and the position detection means 340 is provided.
Hereinafter, components having the same configurations as those of the video display systems of the first and fourth embodiments are denoted by the same reference numerals when illustrated. Detailed descriptions of the same configurations as those of the video display systems of the first and fourth embodiments are omitted.

(Detection means)
The position detection means 340 is installed on the opposite side of the image display transparent member 1 with respect to the viewer X on the side on which the image is displayed, and the position detection means 340 of the image display transparent member 1 indicated by the laser light P from the laser pointer 500 is provided. A camera 342 that receives light from the designated position, and an image processing device 344 that detects the designated position based on image information from the camera 342 and acquires operation information.
Examples of the camera 342 include a normal digital camera.

The image processing device 344 includes, for example, an image processing unit, an interface unit, and a storage unit.
The interface unit connects the camera 342, the video generation device 410, and the like to the image processing unit by wire or wirelessly.
The storage unit stores image information, setting conditions, and the like.
The image processing unit detects the indicated position based on image information from the camera 342, setting conditions stored in the storage unit, and the like, and acquires operation information.

The image processing unit may be realized by dedicated hardware, and the image processing unit includes a memory and a central processing unit (CPU), and a program for realizing the functions of the image processing unit. The function may be realized by loading the program into a memory and executing it.
In addition, a dedicated input device, a display device, or the like may be connected to the image processing device 344 as a peripheral device. An input device refers to an input device such as a display touch panel, a switch panel, or a keyboard, and a display device refers to a CRT, a liquid crystal display device, or the like.
Further, the image processing device 344 and the video generation device 410 may be combined into one device.

(Video display method)
As shown in FIG. 12, a video signal generated by the video generation device 410 and sent from the video generation device 410 is converted into video light L by the projector 200 and projected toward the video display transparent member 1.
The content of the video signal may be a still image or a moving image. The contents of the video signal include operation screens (buttons, letters, etc.) that prompt the observer X to operate, product advertisements, product descriptions, vehicle equipment status, destination guidance, items to be transmitted to the viewer X, movies TV programs, game screens, and the like.

The image light L projected from the projector 200 and incident from the first surface A of the image display transparent member 1 forms an image by being scattered by the reflection film 33 and is directed to the viewer X on the same side as the projector 200. It is displayed so as to be visible as an image.
Further, since the reflection film 33 in the image display transparent member 1 transmits part of the incident light, the scene on the first surface A side is transmitted to the viewer on the second surface B side so as to be visible, and The scene on the second surface B side is transmitted to the viewer X on the first surface A side so as to be visible.

  When the observer X on the first surface A side does not indicate the specific position of the image display transparent member 1 by the laser beam P from the laser pointer 500, the operation information is not sent from the position detection unit 340 to the image generation device 410. . In a state where there is no operation information from the position detection unit 340, the video generation device 410 continues to generate the same video signal as before and sends the video signal to the projector 200 when the content of the video signal is a still image. . In this case, the same image is always displayed on the image display transparent member 1. Note that the video generation device 410 may change the content of the video signal every predetermined time and send the video signal to the projector 200 even in the absence of operation information from the position detection unit 340. In this case, the video displayed on the video display transparent member 1 is switched to another video, or a part of the video is changed.

  When the observer X on the first surface A side indicates the specific position of the image display transparent member 1 with the laser beam P from the laser pointer 500, the position detection unit 340 detects the indicated position and acquires operation information. To do. The operation information is sent from the position detection unit 340 to the video generation device 410. When the operation information matches a preset condition, the video generation device 410 changes the content of the video signal in accordance with the content of the operation information, and sends the video signal to the projector 200. In this case, the video displayed on the video display transparent member 1 is switched to another video, or a part of the video is changed. Note that if the operation information does not match a preset condition, the video generation device 410 generates the same video signal as before when the content of the video signal is a still image, and sends the video signal to the projector 200. send. In this case, the image displayed on the image display transparent member 1 does not change.

(Mechanism of action)
In the video display system of the tenth embodiment described above, a position detection unit 340 that detects an operation by the observer X on the side where the video is displayed and acquires operation information, and an operation from the position detection unit 340. Since the image generation apparatus 410 generates an image signal corresponding to the content of information, interactive processing such as displaying an image for the observer X and changing the image in accordance with the operation of the observer X, etc. It can be performed.
In addition, since the image display transparent member 1 can visibly transmit the scene on the first surface A side to the camera 342 on the second surface B side, the camera 342 is connected to the viewer X on the side on which the image is displayed. Can be installed on the opposite side of the image display transparent member 1. Therefore, the observer X is not conscious of the camera 342, and erroneous detection due to the camera 342 receiving the image displayed on the image display transparent member 1 can be prevented.
Moreover, since the observer X is operating with the laser pointer 500, it is not necessary to arrange | position the member which reduces visibility, such as a touchscreen, in the front surface of the image display transparent member 1. FIG.
Further, since the operation can be performed even when the observer X is away from the image display transparent member 1, the observer X does not block the image light L from the projector 200.

[Eleventh embodiment]
FIG. 13 is a schematic configuration diagram showing an eleventh embodiment of the video display system of the present invention.
The video display system according to the eleventh embodiment includes a transmissive video display transparent member 2, a projector 200 that is installed on the first surface A side of the video display transparent member 2 and spaced from the video display transparent member 2; A laser pointer 500 possessed by the viewer Y on the second surface B side, and a position detection means 340 (detection means) for detecting the indicated position of the image display transparent member 2 indicated by the laser light P from the laser pointer 500 The image generation device 410 connected to the projector 200 and the position detection means 340 is provided.
Hereinafter, components having the same configurations as those of the video display systems of the first, third, fourth, and tenth embodiments are denoted by the same reference numerals when illustrated. Detailed descriptions of the same configurations as those of the video display systems of the first, third, fourth, and tenth embodiments are omitted.

(Detection means)
The position detection means 340 is installed on the opposite side of the image display transparent member 2 with respect to the viewer Y on the side where the image is displayed. A camera 342 that receives light from the designated position, and an image processing device 344 that detects the designated position based on image information from the camera 342 and acquires operation information.

(Video display method)
As shown in FIG. 13, a video signal generated by the video generation device 410 and sent from the video generation device 410 is converted into video light L by the projector 200 and projected toward the video display transparent member 2.
The content of the video signal may be a still image or a moving image. The contents of the video signal include operation screens (buttons, letters, etc.) that prompt the viewer Y to operate, product advertisements, product descriptions, vehicle equipment status, destination guidance, items to be transmitted to the viewer Y, movies TV programs, game screens, and the like.

The image light L projected from the projector 200 and incident from the first surface A of the image display transparent member 2 is imaged by being scattered by the light scattering portion 43, and is an observer Y on the opposite side of the projector 200. Is displayed as a visual image.
In addition, since the gap between the light scattering portions 43 in the image display transparent member 2 transmits light, the scene on the first surface A side is visibly transmitted to the viewer Y on the second surface B side, and The scene on the second surface B side is transmitted to the viewer on the first surface A side so as to be visible.

  When the observer Y on the second surface B side does not indicate the specific position of the image display transparent member 2 with the laser beam P from the laser pointer 500, the operation information is not sent from the position detection unit 340 to the image generation device 410. . In a state where there is no operation information from the position detection unit 340, the video generation device 410 continues to generate the same video signal as before and sends the video signal to the projector 200 when the content of the video signal is a still image. . In this case, the same image is always displayed on the image display transparent member 2. Note that the video generation device 410 may change the content of the video signal every predetermined time and send the video signal to the projector 200 even in the absence of operation information from the position detection unit 340. In this case, the video displayed on the video display transparent member 2 is switched to another video, or a part of the video is changed.

  When the observer Y on the second surface B side indicates the specific position of the image display transparent member 2 with the laser beam P from the laser pointer 500, the position detection unit 340 detects the indicated position and acquires operation information. To do. The operation information is sent from the position detection unit 340 to the video generation device 410. When the operation information matches a preset condition, the video generation device 410 changes the content of the video signal in accordance with the content of the operation information, and sends the video signal to the projector 200. In this case, the video displayed on the video display transparent member 2 is switched to another video, or a part of the video is changed. Note that if the operation information does not match a preset condition, the video generation device 410 generates the same video signal as before when the content of the video signal is a still image, and sends the video signal to the projector 200. send. In this case, the image displayed on the image display transparent member 2 does not change.

(Mechanism of action)
In the video display system according to the eleventh embodiment described above, the position detection unit 340 that detects an operation by the viewer Y on the side where the video is displayed and acquires operation information, and the operation from the position detection unit 340. Since the video generation device 410 generates a video signal corresponding to the content of information, interactive processing such as displaying video for the viewer Y and changing the video according to the operation of the viewer Y, etc. It can be performed.
In addition, since the image display transparent member 2 can visibly transmit the scene on the second surface B side to the camera 342 on the first surface A side, the camera 342 is connected to the viewer Y on the side on which the image is displayed. Can be installed on the opposite side across the image display transparent member 2. Therefore, the observer Y is not conscious of the camera 342, and erroneous detection due to the camera 342 receiving the image displayed on the image display transparent member 2 can be prevented.
Moreover, since the observer Y is operating with the laser pointer 500, it is not necessary to arrange | position the member which reduces visibility, such as a touch panel, in the front surface of the image display transparent member 2. FIG.
Further, since the projector 200 is arranged on the opposite side of the image display transparent member 2 from the observer Y, the observer Y does not block the image light L from the projector 200.

[Twelfth embodiment]
FIG. 14 is a schematic configuration diagram showing a twelfth embodiment of the video display system of the present invention.
The video display system according to the twelfth embodiment includes a reflective video display transparent member 1, a projector 200 installed on the first surface A side of the video display transparent member 1 and spaced from the video display transparent member 1, A pen-type input device 350 (detection means) possessed by the observer X on the first surface A side, and a video generation device 450 connected to the projector 200 and the pen-type input device 350 are provided.
Hereinafter, components having the same configuration as those of the video display system according to the first embodiment are denoted by the same reference numerals when illustrated. Detailed description of the same configuration as that of the video display system of the first embodiment is omitted.

(Detection means)
The pen-type input device 350 has a wireless connection function and incorporates various sensors so that the observer X on the first surface A side causes the pen-type input device 350 to contact or approach the first surface A. It is only necessary that the operation by the observer X can be detected and the operation information (coordinates of contact points, changes in coordinates over time, the number of times of contact, etc.) can be acquired.
Instead of the pen-type input device 350, a globe-type input device may be used.

(Video generator)
The video generation device 450 may be any device that can generate a video signal and change the content of the video signal when a preset condition is satisfied.
The video generation device 450 includes, for example, a video signal generation unit, an interface unit, and a storage unit.
The interface unit connects the projector 200, the pen-type input device 350, and the like and the video signal generation unit by wire or wirelessly.
The storage unit stores a video signal, setting conditions, and the like.
The video signal generation unit generates a video signal based on operation information from the pen-type input device 350, setting conditions stored in the storage unit, and the like. Specifically, when there is no operation information from the pen type input device 350, a video signal corresponding to the operation information is generated, and when there is operation information from the pen type input device 350, a video signal corresponding to the content is generated. Is.

Note that the video signal generation unit may be realized by dedicated hardware, and the video signal generation unit includes a memory and a central processing unit (CPU), and realizes the function of the video signal generation unit. The function may be realized by loading the program for loading into the memory and executing the program.
In addition, a dedicated input device, a display device, or the like may be connected to the video generation device 450 as a peripheral device. An input device refers to an input device such as a display touch panel, a switch panel, or a keyboard, and a display device refers to a CRT, a liquid crystal display device, or the like.

(Video display method)
As shown in FIG. 14, a video signal generated by the video generation device 450 and sent from the video generation device 450 is converted into video light L by the projector 200 and projected toward the video display transparent member 1.
The content of the video signal may be a still image or a moving image. The contents of the video signal include operation screens (buttons, letters, etc.) that prompt the observer X to operate, product advertisements, product descriptions, vehicle equipment status, destination guidance, items to be transmitted to the viewer X, movies TV programs, game screens, and the like.

The image light L projected from the projector 200 and incident from the first surface A of the image display transparent member 1 forms an image by being scattered by the reflection film 33 and is directed to the viewer X on the same side as the projector 200. It is displayed so as to be visible as an image.
Further, since the reflection film 33 in the image display transparent member 1 transmits part of the incident light, the scene on the first surface A side is transmitted to the viewer on the second surface B side so as to be visible, and The scene on the second surface B side is transmitted to the viewer X on the first surface A side so as to be visible.

  When the observer X on the first surface A side does not bring the pen-type input device 350 into contact with or close to the first surface A, no operation information is sent from the pen-type input device 350 to the video generation device 450. When there is no operation information from the pen-type input device 350, the video generation device 450 continues to generate the same video signal as before when the content of the video signal is a still image, and sends the video signal to the projector 200. to continue. In this case, the same image is always displayed on the image display transparent member 1. Note that the video generation device 450 may change the content of the video signal every predetermined time and send the video signal to the projector 200 even when there is no operation information from the pen-type input device 350. In this case, the video displayed on the video display transparent member 1 is switched to another video, or a part of the video is changed.

  When the observer X on the first surface A side operates the pen-type input device 350 in contact with or close to the first surface A, the pen-type input device 350 detects the operation by the observer X and operates Get information. The operation information is sent from the pen-type input device 350 to the video generation device 450. When the operation information matches a preset condition, the video generation device 450 changes the content of the video signal in accordance with the content of the operation information, and sends the video signal to the projector 200. In this case, the video displayed on the video display transparent member 1 is switched to another video, or a part of the video is changed. Note that the video generation device 450 is used when the operation information does not match a preset condition (for example, when the pen-type input device 350 is brought into contact with or close to a location different from the operation screen (button, character, etc.)). If the content of the video signal is a still image, the same video signal as before is generated, and the video signal is sent to the projector 200. In this case, the image displayed on the image display transparent member 1 does not change.

(Mechanism of action)
In the video display system of the twelfth embodiment described above, the pen-type input device 350 that detects an operation by the observer X on the side on which the video is displayed and acquires operation information, and the pen-type input device 350 Since the video generation device 450 generates a video signal corresponding to the content of the operation information, the video is displayed to the observer X and the video is changed according to the operation of the observer X. Can be processed.
In addition, since the detection means is the pen-type input device 350, it is difficult to erroneously detect an operation by the observer X on the first surface A side, and an operation by the observer on the second surface B side is not detected. Absent.

[Thirteenth embodiment]
FIG. 15 is a schematic configuration diagram showing a thirteenth embodiment of the video display system of the present invention.
The video display system according to the thirteenth embodiment includes a transmissive video display transparent member 2, a projector 200 installed on the first surface A side of the video display transparent member 2 and spaced from the video display transparent member 2, A pen-type input device 350 (detection means) possessed by the observer Y on the second surface B side, and a video generation device 450 connected to the projector 200 and the pen-type input device 350 are provided.
Hereinafter, components having the same configurations as those of the video display systems of the first, third, and twelfth embodiments are denoted by the same reference numerals when illustrated. Detailed descriptions of the same configurations as those of the video display systems of the first, third, and twelfth embodiments are omitted.

(Detection means)
The pen-type input device 350 has a wireless connection function, and by incorporating various sensors, the observer Y on the second surface B side brings the pen-type input device 350 into contact with or approaches the second surface B. It is only necessary that the operation by the observer Y can be detected and the operation information (coordinates of contact points, changes in coordinates over time, the number of times of contact, etc.) can be acquired.

(Video display method)
As shown in FIG. 15, a video signal generated by the video generation device 450 and sent from the video generation device 450 is converted into video light L by the projector 200 and projected toward the video display transparent member 2.
The content of the video signal may be a still image or a moving image. The contents of the video signal include operation screens (buttons, letters, etc.) that prompt the viewer Y to operate, product advertisements, product descriptions, vehicle equipment status, destination guidance, items to be transmitted to the viewer Y, movies TV programs, game screens, and the like.

The image light L projected from the projector 200 and incident from the first surface A of the image display transparent member 2 is imaged by being scattered by the light scattering portion 43, and is an observer Y on the opposite side of the projector 200. Is displayed as a visual image.
In addition, since the gap between the light scattering portions 43 in the image display transparent member 2 transmits light, the scene on the first surface A side is visibly transmitted to the viewer Y on the second surface B side, and The scene on the second surface B side is transmitted to the viewer on the first surface A side so as to be visible.

  When the observer Y on the second surface B side does not bring the pen-type input device 350 into contact with or close to the second surface B, no operation information is sent from the pen-type input device 350 to the video generation device 450. When there is no operation information from the pen-type input device 350, the video generation device 450 continues to generate the same video signal as before when the content of the video signal is a still image, and sends the video signal to the projector 200. to continue. In this case, the same image is always displayed on the image display transparent member 2. Note that the video generation device 450 may change the content of the video signal every predetermined time and send the video signal to the projector 200 even when there is no operation information from the pen-type input device 350. In this case, the video displayed on the video display transparent member 2 is switched to another video, or a part of the video is changed.

  When the observer Y on the second surface B side operates the pen-type input device 350 in contact with or close to the second surface B, the pen-type input device 350 detects the operation by the observer Y and operates Get information. The operation information is sent from the pen-type input device 350 to the video generation device 450. When the operation information matches a preset condition, the video generation device 450 changes the content of the video signal in accordance with the content of the operation information, and sends the video signal to the projector 200. In this case, the video displayed on the video display transparent member 2 is switched to another video, or a part of the video is changed. Note that the video generation device 450 is used when the operation information does not match a preset condition (for example, when the pen-type input device 350 is brought into contact with or close to a location different from the operation screen (button, character, etc.)). If the content of the video signal is a still image, the same video signal as before is generated, and the video signal is sent to the projector 200. In this case, the image displayed on the image display transparent member 2 does not change.

(Mechanism of action)
In the video display system of the thirteenth embodiment described above, the pen-type input device 350 that detects the operation by the viewer Y on the side where the video is displayed and acquires the operation information, and the pen-type input device 350 Since the video generation device 450 generates a video signal corresponding to the content of the operation information, the video is displayed to the observer Y and the video is changed according to the operation of the observer Y. Can be processed.
In addition, since the detection means is the pen-type input device 350, it is difficult to erroneously detect an operation by the observer Y on the second surface B side, and an operation by the observer on the first surface A side is not detected. Absent.
Further, since the projector 200 is arranged on the opposite side of the image display transparent member 2 from the observer Y, the observer Y does not block the image light L from the projector 200.

[Other Embodiments]
The video display system of the present invention is not limited to the video display system of the first to thirteenth embodiments.
For example, it may be a combination of two or more of the video display systems of the first to thirteenth embodiments.

Moreover, the detection means in this invention should just detect operation by the observer of the side by which the image | video was displayed, or operation | movement of an observer, and acquire operation information or operation information, and in 1st-13th embodiment. The detection means is not limited.
Moreover, the detection means in this invention may detect an observer's operation | movement from an observer's audio | voice. In this case, a microphone or the like may be used as detection means. Further, when the detection means is on the same side with respect to the observer and the video display transparent member, the video display transparent member may have a function of blocking or attenuating sound on the opposite side to the observer.
Moreover, the detection means in the present invention may detect a motion of a person different from the main observer. Further, the different person may be on the opposite side of the main viewer with the video display transparent member interposed therebetween. In such a case, if the detected motion of a different person is an operation that inputs characters or the like to the display image, a function is provided to change the written characters to a direction suitable for the main observer to observe. It may be.
Further, the video generation apparatus according to the present invention generates a video signal corresponding to the operation information or the operation information from the detection unit, and corresponds to the content when the operation information or the operation information from the detection unit is present. Any device can be used as long as it can generate a video signal, and is not limited to the video generation device in the first to thirteenth embodiments.

(Other reflective video display transparent members)
The reflection-type image display transparent member in the present invention is a transparent member having a first surface and a second surface opposite to the first surface, and a scene on the first surface side is viewed by a viewer on the second surface side. The second surface side scene is visibly transmitted to the first surface side observer and the image light projected from the first surface side is observed on the first surface side. Any video display transparent member may be used as long as it can be viewed as a video to a person, and the video display transparent member 1 in FIG. 1 is not limited. Hereinafter, the same components as those of the video display transparent member 1 of FIG.

As shown in FIG. 16, the reflective image display transparent member may be the image display transparent member 3 in which the first transparent substrate 10 is omitted. As a specific example of the image display transparent member 3, for example, an example in which the second transparent base material 20 is an existing window glass or the like, that is, an example in which the light scattering sheet 30 is attached to an existing window glass or the like can be given. .
Further, in the video display transparent member 1 of FIG. 1, the second transparent base material 20 may be omitted.
Moreover, in the multi-layer glass having two glass plates and a frame-like spacer interposed between the glass plates so that a gap is formed between the glass plates, on the inner surface of one glass plate, The light scattering sheet 30 may be attached.

As shown in FIG. 17, the reflective image display transparent member may be the image display transparent member 4 in which the first transparent base material 10 and the second transparent base material 20 are omitted, that is, the light scattering sheet 30 itself. Good. The video display transparent member 4 can be attached to an existing window glass or the like using an adhesive layer. The video display transparent member 4 can be deformed and is suitable for forming a video display transparent member having a curved surface.
In the image display transparent member 4 of FIG. 17, the first transparent film 31 and the second transparent film 35 may be replaced with the first transparent substrate 10 and the second transparent substrate 20. .

In the reflective image display transparent member, the image light from the projector may be projected onto the second transparent substrate side. In this case, the surface on the second transparent substrate side is the first surface A.
Further, the light scattering sheet 30 may be arranged so that the second transparent film 35 of the light scattering sheet 30 is on the projector 200 side.

In the light scattering sheet, when the light scattering sheet can maintain its shape even without a transparent film, it is not always necessary to provide the transparent film on the light scattering sheet.
In the reflective video display transparent member, an antireflection film may be provided on either one or both of the first surface and the second surface.

In the reflective image display transparent member, the uneven structure on the surface of the first transparent layer may be a regular uneven structure (such as a microlens array). However, for the following reasons, the uneven structure on the surface of the first transparent layer is preferably an irregular uneven structure.
When a reflective film is formed on the surface of a regular concavo-convex structure (such as a microlens array), color unevenness occurs in the scene seen from the image display transparent member as viewed from the observer side due to light diffraction, Visibility is impaired because the edge portion of the scene seen from the viewer side beyond the video display transparent member looks like a rainbow color. On the other hand, when a reflective film is formed on the surface of an irregular concavo-convex structure, light diffraction and spectroscopy hardly occur, and these problems hardly occur. Therefore, the phenomenon that the color changes depending on the viewing direction and location of the image display transparent member and the direction of incident light is suppressed, and the spectroscopic view of the scene seen beyond the image display transparent member is suppressed. As a result, it is possible to provide a property as a transparent screen that is excellent in visibility of a scene seen beyond the video display transparent member and color reproducibility of the scene and video and does not disturb the line of sight.

In addition, other examples of the uneven structure with a reflective film, after embedding the unevenness, a half mirror laminated with a scattering material; a reflection, deflection and diffusion by a volume hologram; a kinoform hologram, Others that are deflected, reflected, or diffused by the surface of the uneven surface and the structure on which the reflective film is formed; those that use cholesteric liquid crystals and polymer cholesteric liquid crystals (cholesteric liquid crystals that are aligned and formed on the surface of the uneven structure, polymers The surface of the cholesteric liquid crystal is roughened by etching, etc., the liquid crystal layer of the cholesteric liquid crystal is formed on a horizontal and vertical alignment base material, and the surface of the cholesteric liquid crystal is added with a surfactant. In addition, the surface of the coated surface is vertically distributed, or the orientation of the coated surface is reduced).
Further, even if there is no reflective film, if the first transparent substrate 10 can sufficiently reflect and scatter light only with the concavo-convex structure, it is not always necessary to provide the reflective film.
Moreover, the reflection type image display transparent member may have a function of scattering light forward simultaneously with reflection and displaying the same image on both sides.

(Other transparent video display transparent members)
The transmission-type image display transparent member in the present invention is a transparent member having a first surface and a second surface opposite to the first surface, and a scene on the first surface side is viewed by a viewer on the second surface side. The second surface side view is transmitted to the first surface side observer so as to be visible, and the image light projected from the first surface side is observed on the second surface side. Any video display transparent member may be used as long as it can be visually recognized by the user, and the video display transparent member 2 shown in FIG. Hereinafter, the same components as those of the video display transparent member 2 in FIG.

As shown in FIG. 18, the transmissive video display transparent member may be a video display transparent member 5 in which the first transparent substrate 10 is omitted. Specific examples of the image display transparent member 5 include an example in which the second transparent substrate 20 is an existing window glass or the like, that is, an example in which the light scattering sheet 40 is attached to an existing window glass or the like. .
Further, in the video display transparent member 2 of FIG. 4, the second transparent base material 20 may be omitted.
Moreover, in the multi-layer glass having two glass plates and a frame-like spacer interposed between the glass plates so that a gap is formed between the glass plates, on the inner surface of one glass plate, The light scattering sheet 40 may be attached.

As shown in FIG. 19, the transmissive image display transparent member may be the image display transparent member 6 in which the first transparent base material 10 and the second transparent base material 20 are omitted, that is, the light scattering sheet 40 itself. Good. The video display transparent member 6 can be attached to an existing window glass or the like using an adhesive layer. The video display transparent member 6 can be deformed and is suitable for forming a video display transparent member having a curved surface.
In the video display transparent member 6 of FIG. 19, the first transparent film 41 and the second transparent film 45 may be replaced with the first transparent substrate 10 and the second transparent substrate 20. .

In the light scattering sheet, when the light scattering sheet can maintain its shape even without a transparent film, it is not always necessary to provide the transparent film on the light scattering sheet.
In the transmissive image display transparent member, an antireflection film may be provided on one or both of the first surface and the second surface.

In the transmissive image display transparent member, the shape of the cross section orthogonal to the longitudinal direction of the light scattering portion 43 is not limited to the right triangle as shown in the illustrated example, and may be another triangle, trapezoid, bell shape, etc. Good.
Other examples of the light scattering sheet include those that are transmitted, deflected, and diffused by a volume hologram; those that are deflected, scattered, and diffused by a kinoform-type hologram, and other configurations in which an uneven surface is formed.

The light scattering sheet is a light scattering layer in which the light scattering particles are dispersed throughout the transparent layer without providing a plurality of light scattering portions as shown in the illustration in the transparent layer. May be.
Examples of the light scattering fine particles include fine particles of a high refractive index material such as titanium oxide, zirconium oxide, and aluminum oxide described above; fine particles of a low refractive index material such as porous silica and hollow silica. The concentration of the light scattering fine particles is preferably from 0.01 to 5% by volume, more preferably from 0.05 to 1% by volume. The average particle diameter of the light scattering fine particles is preferably 50 to 1000 nm, more preferably 100 to 800 nm, for the reason described above.
The light scattering layer may contain a light absorbing material for the reason described above. The concentration of the light absorbing material is preferably 0.01 to 5% by volume, more preferably 0.1 to 3% by volume.
Further, the transmissive image display transparent member may have a function of scattering light backward at the same time as transmission and displaying the same image on both sides.

Hereinafter, the present invention will be described in more detail using examples, but the present invention is not limited to these examples.
Examples 1 to 3 are reference examples.

(Example 1)
On the surface of a transparent polyethylene terephthalate (hereinafter referred to as PET) film (Toyobo Co., Ltd., Cosmo Shine (registered trademark) A4300, thickness: 0.1 mm), an ultraviolet curable resin (Osaka Gas Chemical Co., Ltd. (Registered trademark) EA-F5003) A solution obtained by mixing 3 parts by mass of a photoinitiator (manufactured by BASF, Irgacure (registered trademark) 907) with respect to 100 parts by mass was applied to a thickness of 10 μm by a die coating method.
A white PET film (Toray, E20, arithmetic average roughness Ra: 0.23 μm) with an irregular concavo-convex structure formed on its surface is placed on the surface of the UV curable resin so that the concavo-convex structure is in contact with the UV curable resin. Overlaid on top.

After irradiating 1000 mJ ultraviolet rays from the transparent PET film side to cure the ultraviolet curable resin to form the first transparent layer having the irregular uneven structure of the white PET film transferred to the surface, the white PET film Was peeled off.
Aluminum was physically vapor-deposited on the surface of the first transparent layer by a vacuum vapor deposition method to form a reflective film made of an aluminum thin film (thickness: 8 nm).

3 masses of photoinitiator (BASF, Irgacure (registered trademark) 907) with respect to 100 parts by mass of UV curable resin (Ossol (registered trademark) EA-F5003) manufactured on Osaka Gas Chemical Co., Ltd. The partially mixed solution was applied to a thickness of 10 μm by a die coating method, and a transparent PET film (thickness: 0.1 mm) was overlaid on the ultraviolet curable resin.
The light-scattering sheet of Example 1 was obtained by irradiating 1000 mJ of ultraviolet rays to cure the ultraviolet curable resin to form a second transparent layer.

  Soda lime glass plate (thickness: 3 mm), polyvinyl butyral (hereinafter referred to as PVB) film (thickness: 250 μm), light scattering sheet of Example 1, PVB film (thickness: 250 μm), soda lime glass plate ( (Thickness: 3 mm) in order, and vacuum thermocompression bonding was performed to obtain a reflective video display transparent member of Example 1. The evaluation results of the image display transparent member of Example 1 are shown in Table 1.

(Example 2)
A light scattering sheet of Example 2 was obtained in the same manner as in Example 1 except that a white PET film having an irregular concavo-convex structure formed on the surface thereof had an arithmetic average roughness Ra of 0.05 μm.
A reflective image display transparent member of Example 2 was obtained in the same manner as Example 1 except that the light scattering sheet of Example 2 was used instead of the light scattering sheet of Example 1. The evaluation results of the image display transparent member of Example 2 are shown in Table 1.

(Example 3)
A transparent PET film (Toyobo Co., Ltd., Cosmo Shine (registered trademark) A4300, thickness: 50 μm) is subjected to blade coating with an ultraviolet curable resin (Hitaroid Chemical Co., Ltd., Hitaroid (registered trademark) 7981, specific gravity 1.1). It was applied by a method so that the thickness was 80 μm.
A mold having a plurality of ridges with a right-angled triangle cross section corresponding to the light scattering portion formed on the surface is exposed to ultraviolet rays under conditions of temperature: 25 ° C. and gauge pressure: 0.5 MPa so that the ridges are in contact with the ultraviolet curable resin Pressed onto the curable resin.

  After irradiating ultraviolet rays from the transparent PET film side to cure the ultraviolet curable resin to form a transparent layer lower layer having grooves corresponding to the ridges of the mold formed on the surface, the mold was peeled off. As a result, a plurality of grooves having an interval of 80 μm, a width of 40 μm, a depth of 80 μm, a length of 100 mm, and a cross-sectional shape of a right triangle were formed on the surface of the transparent layer lower layer in a region of 100 mm × 100 mm.

Ultraviolet curable resin (Hitaloid (registered trademark) 7981, manufactured by Hitachi Chemical Co., Ltd., specific gravity 1.1) and titanium oxide fine particles (average particle size: 0.2 μm, specific gravity 4.2) are 0.1% by volume. A paste mixed with was prepared.
The paste was embedded in the groove of the lower layer of the transparent layer by supplying the paste to the surface of the lower layer of the transparent layer and scraping off the excess with a doctor blade. The light scattering portion was formed by irradiating ultraviolet rays and curing the paste.

An ultraviolet curable resin (Hitaroid (registered trademark) 7981, specific gravity 1.1, manufactured by Hitachi Chemical Co., Ltd., specific gravity 1.1) is applied to the surface of the lower layer of the transparent layer and the surface of the light scattering portion by a die coating method so as to have a thickness of 5 μm. A transparent PET film was overlaid on the curable resin.
The light-scattering sheet of Example 3 was obtained by irradiating ultraviolet rays and curing the ultraviolet curable resin to form a transparent layer upper layer.

  Soda lime glass plate (thickness: 3 mm), PVB film (thickness: 250 μm), light scattering sheet of Example 3, PVB film (thickness: 250 μm), soda lime glass plate (thickness: 3 mm) are laminated in this order. Then, vacuum thermocompression bonding was performed to obtain a transmission type image display transparent member of Example 3. Table 1 shows the evaluation results of the image display transparent member of Example 3.

The evaluation criteria in the table are as follows.
(Scene visibility)
The visibility of the scene seen from the viewer side (observer X in the case of a reflection type and observer Y in the case of a transmission type) as viewed from the other side of the image display transparent member was evaluated according to the following criteria.
0: Good.
1: Good when the near side is dark or the outside light is small.
2: At a level where rough recognition is possible.
3: The scene cannot be visually recognized.

(Video visibility)
The visibility of the image displayed on the image display transparent member as viewed from the observer side (observer X for the reflective type and observer Y for the transmissive type) was evaluated according to the following criteria.
0: Good.
1: Good when the surroundings are dark.
2: At a level where rough recognition is possible.
3: The image cannot be visually recognized.

  The video display system of the present invention is used for a showcase of goods, etc .; an exhibition case of works of art; a window of a building, a showroom, a vehicle, etc .; a glass door; a transparent partition in a room; a transparent screen of a game machine; This is useful as a system for displaying an image on a transparent member. Specifically, a scene that can be seen from behind the transparent member when viewed from the observer side can be visually recognized, and an image is displayed to the observer. It is useful as a system capable of performing interactive processing such as changing the value.

1-6 Image display transparent member 10 1st transparent base material 12 Adhesive layer 20 2nd transparent base material 22 Adhesive layer 30 Light scattering sheet 31 1st transparent film 32 1st transparent layer 33 Reflective film 34 2nd Transparent layer 35 Second transparent film 36 Photocurable resin 37 Photocurable resin 40 Light scattering sheet 41 First transparent film 42 Transparent layer 42a Transparent layer lower layer 43 Light scattering portion 44 Groove 45 Second transparent film 46 Photocuring Resin 47 Photocurable resin 48 Paste 61 Mold 62 Mold 101 Video display transparent member 102 Video display transparent member 110 First transparent base material 120 Second transparent base material 132 First transparent layer 133 Reflective film 134 Second film Transparent layer 142 Transparent layer 143 Light scattering unit 200 Projector 300 Touch panel 310 Motion capture 312 Camera 314 Image processing device 320 Motion capture 322 Infrared light source 324 Infrared camera 326 Image processing device 330 Portable terminal 332 Touch panel 340 Position detection means 342 Camera 344 Image processing device 350 Pen type input device 400 Video generation device 410 Video generation device 430 Video generation device 450 Video Generation device 500 Laser pointer A First surface B Second surface F Finger L Video light P Laser light S1 Scene S2 Scene X Observer Y Observer

Claims (10)

A transparent member having a first surface and a second surface opposite to the first surface, and transmits a scene on the first surface side so as to be visible to an observer on the second surface side. The image light projected from the projector installed on the first surface side is transmitted to the viewer on the first surface side and the second surface view so that the viewer of the first surface side is visible. An image display transparent member that is visibly displayed as an image on either one of the surface side observers;
A projector that is installed on the first surface side of the video display transparent member, converts a video signal from the following video generation device into video light, and projects it onto the video display transparent member;
Detecting means for detecting an operation by the observer on the side on which the image is displayed or an action of the observer, and acquiring operation information or action information;
When there is no operation information or motion information from the detection means, a video signal corresponding to that is generated, and when there is operation information or motion information from the detection means, a video generation device that generates a video signal corresponding to the content is provided. Equipped with a video display system.   The video display system according to claim 1, wherein the detection unit is installed on the opposite side of the video display transparent member with respect to the viewer on the video display side.   An imaging unit that is installed on the opposite side of the video display transparent member with respect to the viewer on which the video is displayed, and that receives light from the observer through the video display transparent member; The image display system according to claim 1, further comprising: an image processing device that detects an observer's motion based on image information from the camera and acquires the motion information.   The video display system according to any one of claims 1 to 3, wherein a front haze of the video display transparent member is 50% or less. The image display transparent member is a reflective image display transparent member that displays image light projected from the first surface side as a video image to a viewer on the first surface side,
The forward haze of the image display transparent member is 15% or less,
The rear haze of the image display transparent member is 5% or more,
The video display system according to claim 1, wherein a ratio of the rear haze to the front haze (rear haze / front haze) is 0.8 or more. The image display transparent member is a reflective image display transparent member that displays image light projected from the first surface side as a video image to a viewer on the first surface side,
The video display transparent member has a first transparent layer having a concavo-convex structure on the surface between the first surface and the second surface,
The video display system according to any one of claims 1 to 5, wherein the arithmetic average roughness Ra of the uneven structure of the first transparent layer is 0.01 to 20 µm.   The image display transparent member is formed between the first surface and the second surface so as to be along the surface of the first transparent layer on the concave-convex structure side, and reflects a part of incident light. The video display system according to claim 6, further comprising a film and a second transparent layer provided so as to cover a surface of the reflective film.   The image display system according to claim 6 or 7, wherein the uneven structure on the surface of the first transparent layer in the image display transparent member is an irregular uneven structure. The image display transparent member is a transmissive image display transparent member that displays the image light projected from the first surface side as an image to an observer on the second surface side,
The video display system according to any one of claims 1 to 3, wherein a front haze of the video display transparent member is 4 to 40%. The image display transparent member is a transmissive image display transparent member that displays the image light projected from the first surface side as an image to an observer on the second surface side,
The video display transparent member is disposed between the first surface and the second surface, the transparent layer, and a plurality of members extending along the surface direction arranged in parallel to each other at a predetermined interval inside the transparent layer. The image display system according to claim 1, further comprising: a light scattering unit.

Images