JP3790072B2 - Image display device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an image display device and a screen, and more particularly to a technique effective when applied to an image display device capable of viewing stereoscopic vision without wearing glasses using the principle of binocular parallax.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, an apparatus that combines an image projection apparatus and a directional reflective screen is known as a display apparatus that uses binocular parallax and enables stereoscopic viewing without wearing special glasses.
In particular, a directional reflective screen using a group of mirrors as a horizontal light collecting means for viewers is disclosed in, for example, “Three-dimensional image engineering” by Takayoshi Ohkoshi, pages 28 and 91-97 of Asakura Shoten. Has been.
They are shown in FIG. 16 and FIG.
In the directional reflection screen 200 shown in FIG. 16, the incident light is collected and reflected in the horizontal direction of the viewer by the two-surface orthogonal matching mirror group 211, and the incident light is viewed by the unevenness 211a provided on the mirror surface. Diffuse and reflect in the vertical direction of the person.
In the directional reflection screen 200 shown in FIG. 17, the incident light is condensed and reflected in the horizontal direction of the viewer by the two-surface orthogonal matching mirror group 211, and the incident light is diffused in the vertical direction by the lenticular plate 212. Reflect.
Note that the directional reflection screen 200 shown in FIG. 17 is described in, for example, Japanese Patent Application Laid-Open No. 08-343377.
In the directional reflection screen 200, as shown in FIG. 18, the light ray 6 is reflected in the incident direction in the horizontal direction from the two-plane orthogonally aligned mirror group 211. Therefore, the image signal is reflected and condensed at the position of the image projector in the horizontal direction.
Therefore, as shown in FIG. 19, two image projection devices (51, 52) are arranged directly above or directly below the right eye and left eye of the stereoscopic image viewer 20, and a stereoscopic image based on the principle of binocular parallax. By irradiating a pair of image signals as image signals, a stereoscopic image can be appreciated. This is referred to as a binocular stereoscopic image display device.
[0003]
Furthermore, as shown in FIG. 20, when the number of image projection devices 5 is increased to three or more and an image signal having a parallax corresponding thereto is irradiated, the parallax is also obtained even when the stereoscopic image viewer 20 moves the viewing position in the horizontal direction. A stereoscopic image can be enjoyed by viewing a new set of images 550 with the left and right eyes. This is referred to as a multi-view stereoscopic image display device.
[0004]
[Problems to be solved by the invention]
However, in the prior art stereoscopic image display device, it is desirable that the light emitted from the plurality of image projection devices is optically arranged at the distance between both eyes of the human, and the shape of the image projection device is greatly limited. There was a point.
Further, the conventional stereoscopic image display device has a problem that the image cannot be viewed except at a specific position where the stereoscopic image can be viewed.
The present invention has been made to solve the above-described problems of the prior art, and an object of the present invention is to allow a three-dimensional image to be viewed at a specific position and a two-dimensional image at other positions in an image display device. It is to provide a technology that enables viewing.
Another object of the present invention is to allow an image display device not only to view a stereoscopic image at a specific position but also to view an image at other positions without being restricted by the size of the image projection device. It is to provide a technology that makes it possible.
The above and other objects and novel features of the present invention will become apparent from the description of this specification and the accompanying drawings.
[0005]
[Means for Solving the Problems]
Of the inventions disclosed in this application, the outline of typical ones will be briefly described as follows.
That is, the present invention is an image display device having a plurality of image projection devices and a screen, and any two adjacent image projection devices in the plurality of image projection devices are at least the eyes of the viewer. The screen is installed at a distance greater than the interval, and the screen does not superimpose images projected from the plurality of image projection devices in the viewer's binocular direction, and each of the viewer's eyes It is reflected in a plurality of limited areas having a width including
In the present invention, the images projected from the two adjacent image projection devices are parallax images having binocular parallax, projected from the two adjacent image projection devices, and reflected by the screen. It is characterized in that a stereoscopic image can be viewed at a distance between the eyes of the viewer in two limited areas of the parallax image.
[0006]
In addition, the present invention includes a screen, at least two image projection devices for viewing stereoscopic images, and at least one image projection device for viewing two-dimensional images, and the screen includes the image projection devices described above. Is condensed in a range corresponding to the emission light beam width of each image projection device in the viewer's binocular direction.
Further, the present invention provides at least a screen, an image projection device for viewing three-dimensional images, and a side opposite to a side on which the at least two image projection devices for viewing three-dimensional images are provided. An image projection device for viewing two-dimensional images, and the screen projects the light beams projected from the image projection devices for viewing each stereoscopic image in the binocular direction of the viewer. Condensing light in a range corresponding to the emitted light beam width of the apparatus, and diffusing the light beam projected from the at least one two-dimensional image viewing image projection device in the binocular direction of the viewer .
Further, the present invention is characterized in that the at least two image projection devices for viewing stereoscopic images project two or more parallax images having binocular parallax.
Further, the present invention is characterized in that the at least one image projection device for viewing two-dimensional images projects the same image.
[0007]
According to another aspect of the present invention, there is provided a screen, at least two image projection apparatuses, at least one polarizing means provided between the screen and a position other than the installation position of the at least two image projection apparatuses. In the image display device, the screen collects a part of a light beam projected from each image projection device in a range corresponding to an emission light beam width of each image projection device in a viewer's binocular direction. And the remaining light flux projected from each of the image projection devices is diffused in the direction of the viewer's eyes, and the polarization direction of the at least one polarization means is that of the at least two image projection devices. The polarization direction of the emitted light projected from one image projection apparatus is the same as the polarization direction of the emitted light of the remaining image display apparatuses.
The present invention is also an image display device having a screen and at least two image projection devices, wherein the screen has a polarization direction of one image projection of the at least two image projection devices. A plurality of polarizing means that are the same as the polarization direction of the outgoing light projected from the apparatus and orthogonal to the polarization direction of the outgoing light of the remaining image display devices, and the screen projects from each of the image projection devices A part of the luminous flux is condensed in a range corresponding to the emission luminous flux width of each image projection device in the viewer's binocular direction, and the at least two image projection devices are provided by the plurality of polarization means. The remaining light flux projected from one of the image projection apparatuses is diffused in the viewer's binocular direction.
The present invention is also an image display device having a screen and at least two image projection devices, wherein the screen has a polarization direction of one image projection of the at least two image projection devices. Polarizing means having the same polarization direction as that of the outgoing light projected from the apparatus and orthogonal to the polarization direction of the outgoing light of the remaining image display devices, and the screen is projected from each of the image projection devices. A part of the light beam is condensed in a range corresponding to the emitted light beam width of each image projection device in the viewer's binocular direction, and one of the at least two image projection devices is formed by the polarization unit. The remainder of the light beam projected from the image projection device on the stage is diffused on the side of the screen opposite to the side on which the image projection devices are provided and in the direction of the viewer's eyes.
The present invention is characterized in that the at least two image projection devices project two or more parallax images having binocular parallax.
In addition, the present invention is an image display device having a plurality of image projection devices and a screen, and an image projected on the screen from any two adjacent image projection devices in the plurality of image projection devices. Are characterized in that they are not overlapped with each other in the horizontal direction and are reflected by limited regions each having a position of a width of 65 mm or more.
In addition, the present invention is an image display device having a plurality of image projection devices and a screen, and has a region where a stereoscopic image can be viewed and a region where a two-dimensional image can be viewed.
Further, the present invention is a screen applied to each of the image display devices.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
Note that components having the same function are denoted by the same reference symbols throughout the drawings for describing the embodiment, and the repetitive description thereof will be omitted.
[0009]
[Embodiment 1]
FIG. 1 is a diagram showing a schematic configuration of an image display apparatus according to Embodiment 1 of the present invention.
The image display apparatus according to the present embodiment includes a screen 100 and two image projection apparatuses (hereinafter referred to as projectors) (11, 12), and the two projectors (11, 12) are for viewing. It arranges in the direction of both eyes of the person 20 at a wider interval than both eyes.
FIG. 1 shows an example in which a display area of about 40 inches diagonal is separated by about 1 m.
Here, the binocular direction refers to the direction in which the left and right eyes are lined up, and the direction perpendicular to both eyes refers to the direction perpendicular to the binocular direction on a plane parallel to the screen 1.
Projected images from the respective projectors (11, 12) are reflected by the screen 100 to limited regions (1A, 1B) as shown in FIG.
Such a reflection mechanism to the limited region is based on the structure of the screen 100, and details will be described later.
From each projector (11, 12), a parallax image with parallax is projected onto the screen 100. That is, an image viewed with the left eye is projected from the projector 11, and an image viewed with the right eye is projected from the projector 12.
In this situation, the left eye image and the right eye image are guided to the viewer 20-2 located at the point 1T in FIG. That is, the viewer 20-2 can stereoscopically view.
The region (1A, 1B) is limited not only in the binocular direction but also in the direction perpendicular to both eyes. As a result, the light use efficiency is increased without the light emitted from the projectors (11, 12) being unnecessarily diffused.
[0010]
Next, the structure of the screen 100 of the present embodiment that enables diffuse reflection to the limited area will be described.
The screen 100 includes a mirror group 101 that diffuses light in the horizontal direction and a lenticular plate that diffuses light in the vertical direction.
However, the mirror group 101 of the present embodiment is different from the mirror group 211 shown in FIG. 17 in that each mirror surface is a concave surface or a convex surface.
FIG. 2 is a cross-sectional view of the main part showing the configuration of the mirror group 101 of the present embodiment.
The matching mirror group 101 of the present embodiment includes a concave matching mirror 106 having an arcuate shape with a cross-sectional shape perpendicular to the ridge line of the matching mirror.
The substantial included angle α differs depending on the position on the mirror surface where the light beam incident on the mirror group 101 is incident.
In accordance with the included angle α, the light reflection direction β is shifted from the incident direction by two times | α−90 |.
Since the reflection direction β is distributed within each mirror surface, the reflected light has a spread.
The angle γ of the spread of the reflected light depends on the pitch (P) of the mirrors, the average included angle <α>, and the radius of curvature (r) of the mirror surface.
In this embodiment, a pitch of 0.3 mm, an average included angle of 83 degrees, and a radius of curvature of 1 mm are used.
Of course, the present invention is not limited to this embodiment. The normal setting range of the above parameters is the pitch of the mirror, 0.01 to 5 mm, the average included angle 60 to 120 degrees, and the radius of curvature 0.5. To 100 mm.
The mirror group 101 of the present embodiment can be easily manufactured by using a resin material.
First, a substrate having the same shape as the desired mirror group 101 is molded from polycarbonate resin, acrylic resin, vinyl chloride resin, or the like.
Next, a mirror surface may be formed on the surface of the substrate by a method such as vapor deposition or sputtering of a material such as aluminum or silver.
[0011]
As is clear from the above description, in the image display device according to the present embodiment, the viewer 20 with both eyes located in the region 1A or the region 1B can view a two-dimensional image, such as the point 1T. The viewer 20-2 located at the point can appreciate the stereoscopic image. That is, the limitation of the image display device according to the prior art can be greatly improved.
Since the two projectors (11, 12) can be installed at a distance of about 1 m as described above, the size of the projector (11, 12) is not limited, and the device configuration is inexpensive. There is also an effect.
The present invention is not limited to this embodiment. For example, the distance between projectors 1 m is set as an example that the distance between human eyes is larger than the distance between human eyes. The effect of the present invention can be obtained by increasing the thickness from 49 mm to 70 mm.
[0012]
FIG. 3 is a perspective view showing another example of the screen 100 of the present embodiment.
The screen 100 shown in FIG. 3 does not set the angle δ formed by the ridge line of the mirror group 103 and the lens line of the lenticular plate 102 to the orthogonal state as shown in FIG. It is characterized by deviation from the state.
In this case, in FIG. 3, the cross-sectional shape in the direction perpendicular to the ridgeline of the mirror is a straight line, but it goes without saying that it may be combined with an arc as described above.
In the screen 100 shown in FIG. 3, as the angle δ is increased, the horizontal diffusion can be obtained.
FIG. 4 is a side view showing another example of the screen 100 of the present embodiment.
The screen 100 shown in FIG. 4 includes a group of mirrors 104 and a holographic element 105 that diffuses incident light by diffracting a pattern formed on the substrate surface.
The light projected from the projector passes through the holographic element 105, is reflected by the mirror group 104, passes through the holographic element 105 again, and is guided to the viewer's position.
In this case, the degree of diffusion of incident light is determined by the surface pattern of the holographic element 105 and the setting of the mirror group 104.
[0013]
[Embodiment 2]
FIG. 5 is a diagram showing a schematic configuration of the image display apparatus according to the second embodiment of the present invention.
In the first embodiment, two image projectors (11, 12) are used. In this embodiment, four image projectors (hereinafter referred to as projectors) (41, 42, 43, 44) are provided. It is done.
The images projected from these projectors (41, 42, 43, 44) are diffusely reflected on the region areas (4A, 4B, 4C, 4D), respectively.
This is realized by appropriately setting the horizontal reflection area width as an optical design parameter of the screen 110.
When the images projected from the four projectors (41, 42, 43, 44) have parallax, a stereoscopic image can be viewed at the point (4T1, 4T2, 4T3).
That is, for example, at the point 4T1, the viewer's left eye is positioned in the region 4A, and the viewer's right eye is positioned in the region 4B.
When the viewer's eyes are located in one of the areas, the viewer will appreciate a normal two-dimensional image.
Therefore, it goes without saying that the viewer can appreciate four types of two-dimensional images by moving from the region 4A to the region 4D.
These four types of images need not be limited to parallax images as described above, and independent images may be projected.
Here, independent means that they are not correlated with each other by parallax.
Such a situation can be easily realized by preparing four systems of data input to the projectors (41, 42, 43, 44) individually.
Thereby, it is possible to enable an effective presentation method in which four types of information are sequentially given to the viewer by spatial arrangement using one screen 111.
In the present embodiment, the case where four image projection apparatuses are used has been described. However, the present invention is not limited to this, and it goes without saying that more or less than that is effective.
[0014]
[Embodiment 3]
FIG. 6 is a diagram showing a schematic configuration of an image display apparatus according to Embodiment 3 of the present invention.
The image display apparatus according to the present embodiment includes a screen 120, two image projection apparatuses for viewing stereoscopic images (hereinafter, stereoscopic projectors) (21, 22), and a plurality of two-dimensional image viewing image projections. And an apparatus (hereinafter, a two-dimensional projector) 23.
Here, the three-dimensional projectors (21, 22) are arranged side by side at an interval (about 65 mm) between the eyes of the viewer 20-2.
The stereoscopic projectors (21, 22) project parallax images with parallax on the screen 120, respectively, and the two-dimensional projectors 23 project all equal images onto the screen 100.
Since the screen 120 is a directional reflection screen, the image projected on the screen 120 from the three-dimensional projectors (21, 22) or the two-dimensional projector 23 returns directly below the projected projector.
This is because, as shown in FIG. 17, the screen 120 in the horizontal direction has a directivity that collects the light beam in a range corresponding to the width of the emitted light beam of the projector, and the vertical orthogonal beam group 211. This is because it is composed of the diffusing lenticular plate 222, and the ridge line of the two-plane orthogonal mirror group 211 is arranged so as to be perpendicular to the viewer's eyes.
Therefore, the viewer 20-2 located in the stereoscopic image viewing area 3A can appreciate the stereoscopic image using the parallax images of the stereoscopic projectors (21, 22).
On the other hand, the viewer 20 located in the two-dimensional image viewing area (3B, 3C) can view the two-dimensional image of the two-dimensional projector 23.
[0015]
[Embodiment 4]
FIG. 7 is a diagram showing a schematic configuration of an image display apparatus according to Embodiment 4 of the present invention.
In the image display apparatus according to the present embodiment, a two-dimensional projector 23 is arranged on the back surface of the screen 130.
FIG. 8 is a cross-sectional view of an essential part showing a horizontal cross-sectional configuration of the screen 130 of the present embodiment.
As shown in FIG. 8, the screen 130 according to the present embodiment includes a plurality of two-surface orthogonal alignment mirrors 133 and a plurality of apertures 134 provided between the plurality of two-surface orthogonal alignment mirrors 133. A group 131, a lenticular plate 132, a diffusion plate 135, and a light shielding plate 136 are included.
Here, the light shielding plate 136 is provided in a region where each opening 134 of the mirror group 131 is provided.
The light beam 7 projected from the front surface of the screen 130 by the three-dimensional projector (21, 22) is reflected with directivity by the two-plane orthogonal alignment mirror group 131.
On the other hand, the light beam 8 projected from the back surface of the screen 130 by the two-dimensional projector 23 is diffused by the diffusion plate 135 and emitted from the openings 134 of the mirror group 131.
Thereby, the viewer 20-2 located in the stereoscopic image viewing area 3A can appreciate the stereoscopic image by using the parallax images of the stereoscopic projectors (21, 22).
On the other hand, the appreciator 20 located in the 2D image appreciation region 3B can appreciate the 2D image of the 2D projector 23.
In the third and fourth embodiments, the case where two stereoscopic projectors are used has been described. However, the present invention is not limited to this, and it goes without saying that more than that is effective. Even if there is only one dimension projector, it is effective.
[0016]
[Embodiment 5]
FIG. 9 is a diagram showing a schematic configuration of an image display apparatus according to Embodiment 5 of the present invention.
The image display apparatus according to the present embodiment includes a screen 140 and two image projection apparatuses (hereinafter referred to as projectors) (21, 22).
The projectors (21, 22) are arranged side by side with the binocular interval in the viewer's binocular direction.
Each projector (21, 22) projects a parallax image having parallax on the screen 140.
FIG. 10 is a cross-sectional view of a main part showing a horizontal cross-sectional configuration of the screen 140 according to the present embodiment.
As shown in FIG. 10, the screen 140 according to the present embodiment includes a group of mirrors having a plurality of orthogonal alignment mirrors 143 and a concave alignment mirror 144 that is provided between the plurality of orthogonal alignment mirrors 143 and is a diffusing unit. 141 and a lenticular plate 142 that diffuses a light beam in a direction perpendicular to both eyes.
Here, the concave surface matching mirror 144 has a pitch (P) of 0.5 mm, a radius of curvature (r) of 1 mm, and an average included angle <α> of 68 °. (Please refer to FIG. 2 for the pitch (P), the radius of curvature (r), and the average included angle <α>).
The ridge line of the mirror group 141 is perpendicular to the viewer's eyes.
Further, as shown in FIG. 11, the screen 140 is attached to a base 145 having a concave structure in the ridge line direction of the mirror group 141, and the front and back surface reflected light 500 on the screen 140 of the projector (21, 22) is reflected. The light is condensed at one place so that the viewer 20 cannot see the front and back surface reflected light 500.
Further, the orthogonal alignment mirror 143 and the concave alignment mirror 144 are made of a polymer material so as to be easily processed.
[0017]
As shown in FIG. 9, the image display apparatus according to the present embodiment has a polarizing plate 146 between the screen 140 and the two-dimensional image viewing range (3B, 3C). The polarization direction of the emitted light beam is equal, and the light beam emitted from the projector 22 is orthogonal to the polarization direction of the polarizing plate 146.
The light beam emitted from the projector (21, 22) to the screen 140 is reflected by the orthogonal mirror 143 to the stereoscopic image viewing range 3A.
On the other hand, in the light beam diffused by the concave matching mirror 144, only the light beam emitted from the projector 21 is transmitted through the polarizing plate 146 existing between the screen 140 and the two-dimensional image viewing range (3B, 3C). The image viewing area (3B, 3C) can be reached.
Therefore, the viewer 20-2 located in the stereoscopic image viewing range 3A can view the stereoscopic image by binocular parallax, and the image viewer 20 positioned in the two-dimensional image viewing range (3B, 3C) can view the two-dimensional image. can do.
[0018]
[Embodiment 6]
FIG. 12 is a diagram showing a schematic configuration of an image display apparatus according to Embodiment 6 of the present invention.
The image display apparatus according to the present embodiment includes a screen 150 and two image projection apparatuses (hereinafter referred to as projectors) (21, 22).
The projectors (21, 22) are arranged side by side with the binocular interval in the viewer's binocular direction.
Each projector (21, 22) projects a parallax image having parallax on the screen 150.
FIG. 13 is a cross-sectional view of a main part showing a horizontal cross-sectional configuration of the screen 150 of the present embodiment.
As shown in FIG. 13, the screen 150 of the present embodiment includes a group of mirrors having a plurality of orthogonal alignment mirrors 153 and a concave alignment mirror 154 that is provided between the plurality of orthogonal alignment mirrors 153 and is a diffusing unit. 151, a lenticular plate 152 that diffuses a light beam in a direction perpendicular to both eyes, and a polarizing plate 156 provided in the openings of the plurality of concave mirrors 154.
In the image display device of this embodiment, the polarizing plate 144 of the fifth embodiment is removed, and a polarizing plate 156 is installed in front of the concave matching mirror 154 of the screen 150 as shown in FIG.
Also in the present embodiment, a stereoscopic image can be viewed in the stereoscopic image viewing area 3A, and a 2D image can be viewed at the 2D image viewing position (3B, 3C).
[0019]
[Embodiment 7]
FIG. 14 is a diagram showing a schematic configuration of an image display apparatus according to Embodiment 7 of the present invention.
The image display apparatus according to the present embodiment includes a screen 160 and two image projection apparatuses (hereinafter referred to as projectors) (21, 22).
The projectors (21, 22) are arranged side by side with the binocular interval in the viewer's binocular direction.
Each projector (21, 22) projects a parallax image having parallax on the screen 102.
FIG. 15 is a cross-sectional view of a main part showing a horizontal cross-sectional configuration of the screen 160 according to the present invention.
As shown in FIG. 15, the screen 160 of the present embodiment includes a group of mirrors 161 having a plurality of orthogonal mirrors 163 and an opening 164 provided between the plurality of orthogonal mirrors 163, and both eyes. It comprises a lenticular plate 162 that diffuses a light beam in a vertical direction, a diffusing surface 165 and a polarizing plate 166 provided on the back surface of the mirror group 161.
Also in the present embodiment, a stereoscopic image can be viewed in the stereoscopic image viewing area 3A, and a two-dimensional image can be viewed at the 2D image viewing position 3B on the back of the screen 103.
In the fifth, sixth and seventh embodiments, the case where two projectors are used has been described. However, the present invention is not limited to this, and it goes without saying that more than that is effective.
As described above, in each of the embodiments, a stereoscopic image can be viewed at a specific position, and a two-dimensional image can be viewed at other positions.
Thus, for example, when a game is played using the image display device of each of the above embodiments, the person who actually plays the game can play the game with a stereoscopic image, and the surrounding audience observes the two-dimensional image. Is possible.
Although the invention made by the present inventor has been specifically described based on the above-described embodiment, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. Of course.
[0020]
【The invention's effect】
The effects obtained by the representative ones of the inventions disclosed in the present application will be briefly described as follows.
(1) According to the image display device of the present invention, a stereoscopic image can be viewed at a specific position, and a two-dimensional image can be viewed at other positions.
(2) According to the image display device of the present invention, it is possible to view not only a stereoscopic image at a specific position but also an image at other positions without being restricted by the size of the image projection device. It becomes.
(3) According to the image display device of the present invention, a plurality of viewers can view a stereoscopic image and a plurality of types of images.
[Brief description of the drawings]
FIG. 1 is a diagram showing a schematic configuration of an image display apparatus according to a first embodiment of the present invention.
FIG. 2 is a cross-sectional view of a main part showing a configuration of a group of mirrors according to Embodiment 1 of the present invention.
FIG. 3 is a perspective view showing another example of the screen according to the first embodiment of the present invention.
FIG. 4 is a side view showing another example of the screen according to the first embodiment of the present invention.
FIG. 5 is a diagram showing a schematic configuration of an image display apparatus according to a second embodiment of the present invention.
FIG. 6 is a diagram showing a schematic configuration of an image display apparatus according to a third embodiment of the present invention.
FIG. 7 is a diagram showing a schematic configuration of an image display apparatus according to a fourth embodiment of the present invention.
FIG. 8 is a cross-sectional view of a main part showing a horizontal cross-sectional configuration of a screen according to a fourth embodiment of the present invention.
FIG. 9 is a diagram showing a schematic configuration of an image display apparatus according to a fifth embodiment of the present invention.
FIG. 10 is a cross-sectional view of a principal part showing a horizontal cross-sectional configuration of a screen according to a fifth embodiment of the present invention.
FIG. 11 is a cross-sectional view showing a vertical cross-sectional configuration of a screen according to a fifth embodiment of the present invention.
FIG. 12 is a diagram showing a schematic configuration of an image display apparatus according to a sixth embodiment of the present invention.
FIG. 13 is a cross-sectional view of a principal part showing a horizontal cross-sectional configuration of a screen according to a sixth embodiment of the present invention.
FIG. 14 is a diagram showing a schematic configuration of an image display apparatus according to a seventh embodiment of the present invention.
FIG. 15 is a cross-sectional view of a principal part showing a horizontal cross-sectional configuration of a screen according to a seventh embodiment of the present invention.
FIG. 16 is a perspective view showing a configuration of an example of a conventional directional reflection screen.
FIG. 17 is a perspective view showing the configuration of another example of a conventional directional reflective screen.
FIG. 18 is a diagram showing a ray trajectory of an orthogonal alignment mirror group.
FIG. 19 is a diagram illustrating a schematic configuration of an example of a conventional image display apparatus.
FIG. 20 is a diagram illustrating a schematic configuration of another example of a conventional image display device.
[Explanation of symbols]
5, 11, 12, 21, 22, 23, 41, 42, 43, 44, 51, 52... Image projection device (projector), 6, 7, 8... Luminous flux, 20. Viewer, 100, 110, 120, 130, 140, 150, 160, 200 ... screen, 101, 103, 104, 111, 131, 141, 151, 161, 221 ... mirror mirror group, 102, 132, 142, 152 , 162, 222 ... lenticular plate, 105 ... holographic element, 134, 143, 153, 163 ... two-plane orthogonal alignment mirror, 134, 164 ... opening, 135 ... diffusion plate, 136 ... light shielding plate, 106, 144, 154 ... concave surface matching mirror, 145 ... base, 146, 156, 166 ... polarizing plate, 165 ... diffusion surface, 211a ... irregularities, 500 ... surface, back surface reflected light.

Claims (2)

In a plurality of stereoscopic image viewing image projection devices that project parallax images, a single two-dimensional image viewing image projection device, and an image display device having a screen,
The image projection device for viewing a stereoscopic image is generally installed at an interval between both eyes, and the one image projection device for viewing a two-dimensional image is the image projection device for viewing two or more stereoscopic images on the screen. Is arranged on the opposite side of the side where
The screen has a group of mirrors, a diffusion means, and a plurality of light shielding means,
The group of mirrors is provided on a surface on which the image projection device for viewing a stereoscopic image is provided, and includes a group of straight and / or curved mirrors on a cutting plane perpendicular to the ridgeline of the group of mirrors. ,
A plurality of openings provided between the plurality of mirrors;
The diffusing means is provided on the side where the image projection device for appreciating a two-dimensional image is provided in the group of mirrors.
The plurality of light-shielding means are provided on the side where the image projection device for appreciating the two-dimensional image of the matching mirror group is provided and in an area where the opening of the matching mirror group is provided. Display device. In an image display device having a plurality of image projection devices that project parallax images, and a screen having polarization means and diffusion means,
The plurality of image projection devices are arranged at an interval between both eyes, and the polarization direction of one of the plurality of image projection devices is the same as the polarization direction of the polarization means. The polarization direction is orthogonal to the polarization direction of the polarizing means,
The screen has a group of mirrors, and is provided between the orthogonal mirror group and the orthogonal mirror group in which the screen is a straight line and perpendicular to the ridge line of the mirror group and the orthogonal mirror group. A plurality of openings, and
The image display apparatus according to claim 1, wherein the polarizing means and the diffusing means are provided on a side opposite to the side on which the image projection apparatus is provided in the group of mirrors .

Images