JP3277480B2 - Image display device and integrated perceptual system having the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simulator, a game machine, and a virtual reality (hereinafter, VR).
The present invention relates to a perceptual integration system represented by devices and the like, and particularly to an image display device using a concave mirror and a perceptual integration system including the image display device.

[0002]

2. Description of the Related Art In recent years, with the rapid progress of computers,
Interactive graphic images have become available at low cost. As a result, perceptual integrated systems represented by simulators, game devices, VR devices, and the like have come to be widely used.

[0003] The perceptual integration system gives a sensation as if it were actually experienced by simultaneously stimulating all or some of the human sensations such as sight, hearing and balance. The system generally includes an image display device for stimulating visual perception, an audio device for stimulating hearing, a motion drive for stimulating sense of balance, and the like. Such perceptual integration systems combine the outputs of images, sounds, accelerations, and vibrations organically to give a sense of reality to humans who use the perceptual integration systems, and to generate special emotions such as surprise and enjoyment. Can be caused.

[0004] Among the devices constituting the perceptual integration system, an image display device that stimulates the sight is the most important, and various types of image display devices have already been proposed. Above all, an image display device using a concave mirror can produce an image with a sense of depth.
As shown in Japanese Patent Publication No. 30, published as a flight simulator.

FIG. 12 is a schematic configuration diagram showing a conventional example of an image display device using such a concave mirror, wherein 60 is an image projection device, 61 is a real image screen, and 62 is a concave mirror.

In FIG. 1, an image projected from an image projection device 60 is formed on a real image screen 61, whereby an image projected on the real image screen 61 is converted into a concave mirror 62.
, So that the viewer 63 can view it.

In such a video display device, the viewer 63
Is located near the center of curvature of the concave mirror 62, and the real image screen 61 is located at an intermediate position between the viewer 63 and the concave mirror 62, that is, near the focal position of the concave mirror.

With this arrangement, when the viewer 63 views the image projected on the real image screen 61 by reflection of the concave mirror 62, the image becomes a virtual image whose imaging surface is substantially infinite, and the viewer 63 However, the feature of this conventional example is that the user feels as if he / she is watching a video with a sense of depth.

Such an image having a sense of depth is extremely effective, for example, when a pilot lands on an airfield and visually examines the distance to the runway as performed in a flight simulator. It is.

[0010]

By the way, the concave mirror 62
In order to realize such an image display apparatus using a mirror, a concave mirror 62 having a large radius of curvature, a substantially spherical real image screen 61 having a radius of curvature approximately half that of the concave mirror 62, and image projection for projecting an image on the real image screen 61 are provided. The device 60 is required.

Conventionally, as the concave mirror 62, an aluminum foil mirror or a glass polished mirror has been used. Aluminum foil mirrors are light in weight and inexpensive in manufacturing cost, but it is difficult to ensure the mirror surface quality of the surface, and furthermore, there is a problem that the screen shakes when excited by a motion drive. On the other hand, a glass polished mirror can compensate for these problems, however, the weight of the mirror itself is heavy, the whole device becomes very heavy, and the manufacturing cost of the concave mirror is high, so that the whole device becomes very heavy. There is a problem that it becomes expensive.

Also, in order to project an image on the substantially spherical real image screen 62, it is necessary to use a special lens for the image projection device 60. Since such a special lens is not a general-purpose component, the cost of the image projection device 60 is extremely high.

Further, in the above-mentioned conventional image display device, since the image projection device 60 is installed above the head of the viewer 63, if a perceptual integration system is configured using such an image display device, for example, the operation of a train In a perceptual integrated system that requires an operation such as standing or sitting on a driver's cab, such as a training device, when the viewer 63 stands, the head thereof may hit the image projection device 60. For this reason, there is a problem that it cannot be configured depending on the perceptual integration system.

An object of the present invention is to solve such a problem, to use a high-rigidity, lightweight, low-cost concave mirror, to use a projection lens similar to the conventional one, and to obtain a sufficient space for a viewer. And a perceptual integration system having the same.

[0015]

In order to achieve the above object, the present invention provides an image display device, comprising: an image source for projecting a real image; a real image screen on which the image is projected from the image source; A substantially spherical concave mirror for reflecting and monitoring an image projected on the real image screen portion, wherein the real image screen portion is of a reflection type, and the shape is a convex shape in the direction of the image source. I do. And the image source is the curvature half
A lens that projects an image of a spherical phosphor screen having a diameter L onto a plane
And has a spherical phosphor screen having a radius of curvature H
The image of the projection tube provided in the image source is displayed on the real image screen.
When projected above, the radius of curvature S of the real image screen is
The radius of curvature L, between the H, S = -A · (L -H) ( where, A is a constant in the range of 0.50 to 0.78) so that there is a relationship.

Further, according to the present invention, the concave mirror is made of synthetic resin, and its front surface or back surface is subjected to aluminum evaporation, and the evaporated surface is used as a reflection surface.

Further, according to the present invention, one of the two sides of the concave mirror facing each other is longer than the other.

Further, according to the present invention, the radius of curvature of the concave mirror is smaller at the periphery than at the center.

Since the real image screen section is of a reflection type, the image source is disposed on the concave mirror side with respect to the viewer, and the image source as in the conventional example is disposed above the viewer's head. Never be. Also, there is no need to use a special lens as the projection lens, and a conventional projection lens can be used.

Since the concave mirror is formed by depositing aluminum on the front or back surface of a synthetic resin molded body and using the deposited surface as a reflecting surface, the rigidity is higher than that of a conventional aluminum foil mirror, and the conventional glass polished mirror is used. Lightweight and cheaper to manufacture.

If one of the two opposing sides of the concave mirror is longer than the other, the manufacture of the concave mirror becomes easier.

When the radius of curvature of the concave mirror is smaller at the periphery than at the center, even if the same image source is used, an image with a wider viewing angle can be provided to a viewer.

[0023]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a first embodiment of an image display device according to the present invention.
1A is a side view, FIG. 1B is a plan view, 1 is an image display device of this embodiment, 2 is a frame, and 3 is a viewer. 4 is a chair, 5
Is an image projection device, 6a is a red projection tube, 6b is a green projection tube, 6c is a blue projection tube, 7 is a reflective spherical screen, 8
Is a concave mirror. In FIG. 1B, the viewer 3 is omitted.

1 (a) and 1 (b), an image projection device 5 and a concave mirror 8 are fixed in a predetermined positional relationship by a frame 2, and a viewer 3 can watch an image in front of the concave mirror 8. A chair 4 is provided to sit for viewing.

The image projection device 5 is arranged below the concave mirror 8 and on the back side of the concave mirror 8, and the reflective spherical screen 7 is arranged between the concave mirror 8 and the chair 4.
This reflective spherical screen 7 has its convex and substantially spherical screen surface facing the concave mirror 8 side. And
The radius of curvature of the concave mirror 8 is slightly less than twice the radius of curvature of the reflective spherical screen 7, and the concave mirror 8 and the concave mirror 8 are positioned so that the center of curvature of the concave mirror 8 and the center of curvature of the reflective spherical screen 7 are close to each other. The arrangement relationship of the reflective spherical screen 7 is set.

In this configuration, the image projecting device 5 and the reflective spherical screen 7 face each other, and the image projected by the image projecting device 5 is projected from below the concave mirror 8 onto the screen surface of the reflective spherical screen 7. The image of the surface is reflected by the concave mirror 8 so that the viewer 3 sitting on the chair 4 can view it. That is, the reflective spherical screen 7
The image projected in the range of the vertical direction cd on the screen surface is reflected in the range of c′-d ′ in the vertical direction of the concave mirror 8, but the viewer 3 can see the lower end d ′ of the concave mirror 8. The arrangement relationship of the reflective spherical screen 7 and the image projection device 5 with respect to the concave mirror 8 is set so as to be visible.

In the image projection device 5, a red projection tube 6a, a green projection tube 6b, and a blue projection tube 6c are arranged in-line, and the respective projected images are projected onto a reflective spherical screen 7 and synthesized. It is sent to the viewer 3 as a color image.

As described above, in this embodiment, since the image projection device 5 is arranged on the opposite side of the reflective spherical screen 7 from the viewer 3, the viewer 3 is placed above the reflective screen 7. In addition, a sufficient space can be provided, and no feeling of oppression is generated.

FIG. 2 is a sectional view showing a specific example of a manufacturing apparatus of the concave mirror 8 in FIG. 1, wherein 9 is a disk, 10 is a molding die, 11 is a rubber packing, 12 is a closed container for pressurizing, 13 is a bolt, 14 is a fitting for pressurized air blowing, 15
Denotes an air compressor, and 16 denotes a heater for heating.

In the figure, a disc before forming into a concave mirror 8 made of synthetic resin is provided between an opening at a lower portion of a molding die 10 having a spherical inner surface and an opening at an upper portion of a closed container 12 for pressurization. 9
, And the molding die 10 and the closed container 12 are tightened by bolts 13. Thereby, the disk 9 is fixed between the molding die 10 and the closed container 12. An air-tight rubber packing 11 is sandwiched between the opening of the closed container 12 and the disk 9 so that the internal space formed by the closed container 12 and the disk 9 is sufficiently sealed. An air compressor 15 is connected to the sealed container 12 via a pressurized air blowing pipe joint 14.

In this state, the disk 9 and the closed container 1
2 is provided with a heater 16 for heating in an internal space between the disk 9 and the airtight container 1 from the air compressor 15.
Pressurized air is blown into the internal space between the disk 2 and the disk 9 by the heater 16. The disk 9 is softened by this heating, and adheres to the inner surface of the molding die 10 by the pressure of the blown compressed air. After a while
The entire apparatus is cooled to separate the molding die 10 and the closed container 12, and the synthetic resin molded body is removed from the molding die 10, whereby a dome-shaped synthetic resin serving as a base of the concave mirror 8 in FIG. A molded article can be obtained.

In the above description, the molding die 10 is used.
It can also be molded by free blow without using this. However, in this case, since the shape error after molding is large, it is unsuitable when the concave mirror 1 used in FIG. 1 is configured by combining a plurality of concave mirrors, and is particularly suitable for use alone.

The concave mirror 8 in FIG. 1 can be obtained by forming and processing a reflective layer on the synthetic resin molded article of the dome-shaped concave mirror formed as described above. Although plating may be used, aluminum evaporation is generally superior in terms of reflection characteristics.
When aluminum is deposited on the concave side of the synthetic resin molded article of the concave mirror obtained as described above, after the deposition, a protective layer for environmental protection, for example, a low melting point glass or the like is deposited on this aluminum deposited surface. I do. When aluminum is deposited on the concave side of the synthetic resin molded body of the concave mirror, a protective paint for the environment is applied to the deposited surface.

The concave mirror 8 used in FIG. 1 is obtained by cutting the central portion of the dome-shaped synthetic resin molded article of the concave mirror on which the reflection layer and the like are formed as described above into a predetermined size and shape. This cutting may be performed before the formation of the reflective layer.

FIG. 3 is a perspective view showing a concrete example of the concave mirror 8 in FIG. 1, wherein 17 is a molded body made of synthetic resin, 18 is a reinforcing plate, and 19 is a flange.

In the figure, the reinforcing plate 18 is fixed to the upper and lower sides of the synthetic resin molded body 17 formed as described above, and the concave mirror 8 is obtained. The reinforcing plate 18 is made of the same material as the molded body 17 and can be rigidly fixed to the molded body 17 with an adhesive or the like. In addition, these reinforcing plates 1
The end face 8 and the left and right end faces of the molded body 17 where the reinforcing plate 18 is not provided are in the same plane, and the left and right end faces of the molded body 17 are sandwiched between the molding die 10 and the closed container 12 in FIG. The flanged portion forms the flange portion 19.

The concave mirror 8 having such a configuration can be easily installed on an image display device as shown in FIG. The reason is that the wall pressure of the flange portion 19 is the thickest and the strongest, and the strength is reduced as the center portion of the concave mirror 8 becomes thinner. Therefore, the strong flange portion 19 is used as a mounting portion to the image display device. This is because the concave mirror 8 can be fixed to the image display device with the minimum necessary reinforcement.

FIG. 4 is a schematic sectional view showing a second embodiment of the image display device according to the present invention, and the portions corresponding to those in FIG.

In this figure, in this embodiment, in contrast to the first embodiment shown in FIG. 1, an image projection device 5 and a reflective spherical screen 7 are arranged above a concave mirror 8. In addition, the viewer 3 views from the lower side near the center of curvature of the concave mirror 8 instead of the upper side near the center of curvature of the concave mirror 8. However, even in this case, the radius of curvature of the concave mirror 8 is slightly less than twice the radius of curvature of the reflective spherical screen 7, and the center of curvature of the concave mirror 8 and the reflective spherical screen 7
The reflective spherical screen 7 is arranged at an intermediate position between the viewer 3 and the concave mirror 8, that is, near the focal point of the concave mirror 8 so that the centers of curvature are close to each other.

With this arrangement, the viewer 3 monitors the image projected on the reflective spherical screen 7 and reflected by the concave mirror 8 from below the reflective spherical screen 7. Since the center of curvature of the concave mirror 8 and the center of curvature of the reflective spherical screen 7 are located close to each other, the concave mirror 8 may have the shape of the lower half of the spherical surface.

In the second embodiment, FIG.
When the image projection device 5 and the reflective spherical screen 7 are disposed below the concave mirror 8 as in the first embodiment shown in FIG. 1, the viewer 3 can see from above the vicinity of the center of curvature of the concave mirror 8. The concave mirror 8 may have the shape of the lower half of the spherical surface.

FIG. 5 is a perspective view showing a specific example of the concave mirror 8 in FIG. 4, wherein 20 is an upper side, 21 is a lower side,
Parts corresponding to those in FIG. 3 are denoted by the same reference numerals.

In this figure, in this specific example, the synthetic resin molded article of the concave mirror formed as described in FIG. 2 is cut into a shape and size such that the upper side 20 is longer than the lower side 21. .

As shown in FIG. 6, the synthetic resin molded body 22 of the dome-shaped concave mirror obtained by the manufacturing apparatus shown in FIG. 2 is cut along the center line 24, and It is a synthetic resin molded body 26 obtained by cutting along the parting line 23 of the part.

When the concave mirror 8 is formed in this manner, as shown in FIG. 6, even the portion opposite to the center line 24 is cut along the dividing line 25 on the side to further form one more. A synthetic resin molded body 27 is obtained. That is, 1
Two concave mirrors 8 can be obtained from one dome-shaped concave mirror synthetic resin molded body 22.

When it is not necessary for the concave mirror 8 in the embodiment shown in FIG. 4 to have a large horizontal field of view, as shown in FIG. 29, 30, and 31 and cut into three equal parts, and further, each of the divided parts is cut along the dividing lines 32, 33, and 34 on the vertex 28 side, and the synthetic resin molded bodies 35 and 3 are cut.
6 and 37 are obtained, and each of them is processed as described above to form a reflection layer and the like, whereby each becomes the concave mirror 8 in the second embodiment shown in FIG. That is, three concave mirrors 8 can be obtained from one synthetic resin molded body 22.

Similarly, if the horizontal field of view of the concave mirror to be used can be further narrowed, four or more concave mirrors 8 can be obtained from one dome-shaped synthetic resin molded body 22.

FIG. 8 shows a main part of the image projection apparatus 5 in each of the embodiments described above. FIG. 8 (a) is a horizontal sectional view, FIG. 8 (b) is a vertical sectional view, and 38 is a housing. The body, 39a is a red projection lens, 39b is a green projection lens, 39c is a blue projection lens, 40a to 40c are couplers, 41 is a mounting bracket, and 42 is an electric circuit. The same reference numerals are used.

8A and 8B, in the housing 38, a red projection lens 39a is connected to a red projection tube 6a by a coupler 40a, and a green projection lens 39b is connected to a green projection tube 6b by a coupler 40b. Is connected to the blue projection tube 6c by the coupler 4
0c, the blue projection lenses 39c are respectively coupled, and further, the respective projection tubes 6a, 6b, 6c, their couplers 40a, 40b, 40c, their projection lenses 39a,
Blocks 39b and 39c are provided with combiners 40a, 40b,
The portion 40c is fixed in-line to the mounting bracket 41.

An electric circuit 42 is provided in the housing 38. The processed red video signal is sent to the red projection tube 6a, the green video signal is sent to the green projection tube 6b, and the blue video signal is sent to the blue projection tube. 6c. As a result, a red image is projected on the red projection tube 6a, a green image is projected on the green projection tube 6b, and a blue image is projected on the blue projection tube 6c, and the respective images are projected on the red projection lens 39a and the green projection lens 39.
(b) Enlarged by the blue projection lens 39c and synthesized on the reflective spherical screen 7 to project a color image.

In each of the embodiments described above, the red projection tube 6a and the green projection tube 6 in the image projection device 5 are used.
b and the blue projection tube 6c use a substantially spherical fluorescent surface as their fluorescent surface, and the reflecting surface of the reflective spherical screen 7 has a substantially spherical shape convex toward the image projection device side. No. On the other hand, in a conventional image display device, generally, a fluorescent screen of a projection tube has a flat or substantially spherical shape, and a substantially flat transmission screen is used as a screen for projecting an image from now on.
As described above, in each of the above embodiments, at least the screen that projects the image from the projection tube is different from the conventional image display device. However, the projection lens is the same as that used in the conventional image display device, as described later,
Alternatively, it may be slightly changed.

FIG. 9A is a diagram showing the principle of a projection optical system in a conventional image display device, wherein 43 is the object plane of the projection optical system (the fluorescent screen of the projection tube), and 44 is a substantially planar image. The surface (screen surface) 45 is a projection lens. FIG. 9 (b)
Is a diagram showing the principle of a projection optical system in the image display apparatus according to the present invention, wherein 46 is an object surface of the projection optical system (fluorescent surface of the projection tube), and 47 is a substantially spherical image surface convex to the projection tube side. (Screen surface).

In FIG. 9A, in the conventional image display device, the object surface 43 of the projection optical system is a flat surface or a substantially spherical surface.
Thus, the image on the object surface 43 is formed on the screen 44 so that the image is formed on the point a ′ of the flat screen 44.

In FIG. 9B, according to the present invention,
As the projection lens 45, the same one as the projection lens 45 in FIG. 9A is used, but the object surface (fluorescent surface of the projection tube) 46 of the projection optical system forms a substantially spherical concave surface on the image surface 47 side. I have. In the projection tube of the conventional image display device shown in FIG. 9 (a), the fluorescent surface (object surface 43) may be substantially spherical, but the fluorescent surface of the projection tube in the present invention is used. (Object surface 46)
The radius of curvature is smaller than that of the conventional object surface 43. The image on the object surface 46 is formed on the screen 47 so that the point b of the image on the object surface 46 having the substantially spherical shape is formed by the projection lens 45 on the point b ′ of the substantially spherical screen 47.
Imaged on top.

That is, according to the present invention, an image of a substantially spherical object surface is formed on a substantially spherical screen in the same direction.

When a projection tube having a flat fluorescent screen and a lens designed for a flat screen are used as the projection lens, an R450 mm is used for a spherical fluorescent screen having a radius of curvature (R) of 350 mm. An image can be formed on a spherical screen of about R650 mm. When a spherical screen having a larger radius of curvature is used, a projection tube having a spherical phosphor screen of R600 mm to R800 mm may be used. Also, R600mm ~ R
The same effect can be obtained by combining a projection lens designed for a projection tube having an 800 mm spherical fluorescent surface with a projection tube having a fluorescent surface having a smaller radius of curvature. .

When the inventors conducted experiments using two types of projection tubes and two types of projection lenses, the results shown in the following Table 1 were obtained.

[0058]

[Table 1]

The reason that the spherical screen has a width is that the image plane does not completely coincide with the spherical surface of the screen and the image plane has some irregularities (the field curvature aberration of the lens). This is because, when the image surface is regressed with a spherical surface, a difference is made depending on the image height to be emphasized.

Here, the curvature (reciprocal of the radius of curvature) of the phosphor screen of the projection tube is H, the curvature of the screen is S, and the curvature of the projection lens is L (this is the image on the spherical phosphor screen having this curvature L). Is used to mean that it is designed to project on a flat screen), the following relational expression holds among these H, S, and L.

S = −A · (L−H) where A is a constant and is in the range of 0.50 to 0.78. When focusing on the focus performance of the image projection device,
It is desirable that A = 0.57 to 0.71.

By the way, if only one image projection device is used, the viewing angle in the horizontal direction is generally 70 ° or less.
This is determined by the aspect ratio of the display screen of the image projection device. That is, the viewing angle of the image display device using the concave mirror is about 4
Since 0 ° is the limit, if the aspect ratio of the display screen of the image projector is 16: 9, the horizontal viewing angle is 7
0 °. If a wider horizontal viewing angle is required, a plurality of image projection devices may be arranged to form a multi-screen system. However, as in a small simulator, a wide horizontal viewing angle is required, but there are cases where the installation location of the device is limited.

FIG. 10 is a block diagram showing a main part of an image display apparatus according to a third embodiment of the present invention which meets such a demand. Reference numeral 48 denotes a concave mirror, and a part corresponding to the above-mentioned drawing has The same reference numerals are used.

In each of the above-described embodiments, the concave mirror has a substantially spherical shape with the same curvature as shown by a broken line 8, but the concave mirror 48 used in the third embodiment is
As shown in FIG. 10, the curvature radius is not uniform but the radius of curvature at the periphery is smaller than the radius of curvature at the center.

When the radius of curvature of the concave mirror is small, the magnification of the concave mirror increases, and therefore, the size of an image projection device for projecting an image onto the concave mirror can be relatively reduced. Therefore, in FIG. 10, by reducing the radius of curvature of the peripheral portion of the concave mirror 48, the concave mirror 8 having the same radius of curvature at the peripheral portion and the central portion even when the same image projection device 5 is used.
Is wider than the horizontal viewing angle α with respect to the concave mirror 48. The image distortion that occurs at this time can be eliminated by the convergence circuit of the image projection device 5, and simultaneously occurring astigmatism can be ignored because it occurs at the periphery of the screen.

The concave mirror 48 having such an aspherical shape is used.
It is very difficult to manufacture. On the other hand, by setting the aspect ratio of the screen in the image projection device 5 to be larger than 16: 9 to make the screen longer horizontally, one image projection device and a substantially spherical concave mirror can be used in the horizontal direction. Can be set to 70 ° or more.

FIG. 11 is a block diagram showing an embodiment of a perceptual integration system according to the present invention using the above-described image display device. The first embodiment shown in FIG. 1 is used as the image display device. 49 is an input / output device,
50 is a central control unit, 51 is a video generation device, 52 is a sound generation device, 53 is an input / output interface, 54 is a hydraulic control device, 55 is a hydraulic device, 56 is a motion drive, and 57 is a speaker, corresponding to FIG. The same reference numerals are given to the same parts, and the duplicate description will be omitted.

In the figure, when the operator (viewer) 3 operates the input / output device 49 while watching the image from the concave mirror 8, information corresponding to this operation is transmitted to the input / output interface 5.
3 to the central controller 50. The central control device 50 sends a command to any or all of the image generating device 51, the sound generating device 52, and the hydraulic control device 54 according to the transmitted information.

Upon receiving a command from the central control device 50, the video generating device 51 generates a video signal in accordance with the command and supplies it to the image projection device 5, and a video based on the video signal is projected from the image projection device 5. Is done. When receiving a command from the central control device 50, the sound generation device 52 generates a sound signal in accordance with the command and supplies the sound signal to the speaker 57.
Outputs a sound based on the sound signal. Hydraulic control device 5
4 receives a command from the central control device 50, sends a control signal corresponding to the command to the hydraulic device 55, and the hydraulic device 55 operates the motion drive 56 in response to the control signal, and shakes the image display device 1. Move. Although the figure shows the motion drive 56 having six degrees of freedom, the essence of the present invention does not change for any number of axes.

As a result, it is possible to give a real feeling to the operator 3 using the perceptual integration system, and to give special emotions such as surprise and enjoyment.

It is needless to say that other embodiments such as the embodiments shown in FIGS. 4 and 10 can be used as the image display device 1 of the perceptual integration system.

[0072]

As described above, according to the image display apparatus of the present invention, the concave mirror is formed by combining one or a plurality of concavely formed synthetic resin molded products formed by aluminum evaporation. By doing so, the rigidity is higher than that of a conventional aluminum foil mirror, the weight is lower than that of a crow polished mirror, and the manufacturing cost can be reduced.

According to the image display apparatus of the present invention, a special projection lens is not required, and an image can be projected on a substantially spherical screen using a projection lens similar to the conventional one. The cost of the projection device can be significantly reduced.

Further, in the image display device, since the image source is arranged on the concave mirror side, in the perceptual integration system according to the present invention using the image display device,
The operator can have sufficient space to move freely, and the operator can move freely, giving more realism and giving special emotions such as more surprise and fun.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a first embodiment of an image display device according to the present invention.

FIG. 2 is a sectional view showing a specific example of a manufacturing apparatus of the concave mirror in FIG.

FIG. 3 is a perspective view showing a specific example of the concave mirror in FIG.

FIG. 4 is a configuration diagram showing a second embodiment of the image display device according to the present invention.

FIG. 5 is a perspective view showing a specific example of the concave mirror in FIG.

FIG. 6 is a view showing a main part of a specific example of the manufacturing method of the specific example shown in FIG. 5;

FIG. 7 is a view showing a main part of another specific example of the manufacturing method of the specific example shown in FIG. 5;

8 is a diagram showing a specific example of the image projection device in FIGS. 1 and 4. FIG.

FIG. 9 is a diagram showing a comparison between projection optical systems of a conventional image display device and an image display device according to the present invention.

FIG. 10 is a configuration diagram showing a main part of a third embodiment of the image display device according to the present invention.

FIG. 11 is a configuration diagram showing an embodiment of a perceptual integration system according to the present invention.

FIG. 12 is a schematic configuration diagram illustrating an example of a conventional image display device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Image display apparatus 3 Viewer 5 Image projection apparatus 6a, 6b, 6c Projection tube 7 Reflective spherical screen 8 Concave mirror 9 Disk 10 Molding mold 12 Pressurized closed container 15 Air compressor 16 Heating heater 17 Synthetic resin Molded body 18 reinforcing plate 19 flange portion 20 upper side 21 lower side 22, 26, 27, 35 to 37 molded body 39a, 39b, 39c made of synthetic resin projection lens 41 mounting bracket 42 electric circuit 48 concave mirror 49 input / output device 50 center Control device 51 Image generation device 52 Sound generation device 53 Input / output interface 54 Hydraulic control device 55 Hydraulic device 56 Motion drive 57 Speaker

──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Hideo Tanide 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Hitachi, Ltd. Multimedia System Development Division (56) References JP-A-1-290386 (JP, A (58) Fields surveyed (Int. Cl. ⁷ , DB name) H04N 5/74

Claims (12)

(57) [Claims] And 1. A video source for Utsude a real image, and the real image screen <br/> reflective of the video source or al Film images are projected, the the video to be projected of the actual image screen for table Shimesuru And a concave mirror having a substantially spherical reflective surface, and the image source is configured to display an image of a spherical fluorescent surface having a radius of curvature L.
Using a lens that projects onto a plane, a spherical surface with a radius of curvature H
Image of a projection tube provided in the image source having a screen-like phosphor screen
Is projected onto the real image screen, the real image screen is projected.
Between the curvature radii S and the above-mentioned radii of curvature L and H, where S = −A · (L−H) (where A is a constant in the range of 0.50 to 0.78) . An image display device characterized by the above-mentioned. 2. The method according to claim 1, wherein the constant A is 0.5.
An image display device characterized by being in the range of 7 to 0.71 . 3. The concave mirror according to claim 1, wherein the concave mirror is made of a synthetic resin and has a front surface or a back surface.
An image display device, characterized in that the surface is subjected to aluminum vapor deposition and the vapor deposition surface is used as a reflective layer . 4. The concave mirror according to claim 1 , wherein one of two opposite sides of the concave mirror is the other.
An image display device characterized by having a longer length . 5. A video source for Utsude a real image, reflective real image screen of the image from the image source is projected
For displaying the image projected on the real image screen.
A concave mirror having a substantially spherical reflecting surface, wherein a radius of curvature of the concave mirror is such that a radius of curvature of a peripheral portion thereof is inside.
An image display device characterized by being smaller than a radius of curvature of a central portion . 6. The horizontal direction of an image projected on the real image screen according to claim 5 .
Niariti, unlike in the in the video heart part and the image periphery, the
The horizontal linearity of the image at the center of the image is
Relative to the horizontal linearity of the image at the periphery
An image display device characterized by being large . 7. An image source for projecting a real image,
A reflective real image screen on which an image is projected from the image source
And displaying the image projected on the real image screen.
Image display having a concave mirror whose reflecting surface is substantially spherical
A perceptual integration system comprising a device, wherein the image source is configured to display an image of a spherical phosphor screen having a radius of curvature L.
Using a lens that projects onto a plane, a spherical surface with a radius of curvature H
Image of a projection tube provided in the image source having a screen-like phosphor screen
Is projected onto the real image screen, the real image screen is projected.
Between the curvature radii S and the above-mentioned radii of curvature L and H, where S = −A · (L−H) (where A is a constant in the range of 0.50 to 0.78) . A perceptual integration system, characterized in that: 8. The method according to claim 7, wherein the constant A is in a range of 0.57 to 0.71.
Perceptual integration system featuring. 9. The concave mirror according to claim 7 , wherein the concave mirror is made of synthetic resin and has a front surface or a back surface.
A perceptual integration system characterized by applying aluminum evaporation to the surface and using the evaporation surface as a reflective layer . 10. The concave mirror according to claim 7 , wherein one of the two opposing sides of the concave mirror is the other.
Perceptual integration system characterized by a long period of time . 11. An image source for displaying at least a real image.
And a reflection-type real image screen on which an image is projected from the image source.
And the video projected on the real image screen.
Having a concave mirror whose reflecting surface is substantially spherical
A perceptual integration system with a display device, wherein the radius of curvature of the concave mirror is such that the radius of curvature of its periphery is
A perceptual integration system characterized by being smaller than the radius of curvature at the center . 12. The horizontal direction of an image projected on the real image screen according to claim 11 .
Nearity differs between the center of the image and the periphery of the image.
The horizontal linearity of the image at the center of the image is
Relative to the horizontal linearity of the image at the periphery
Perceptual integration system characterized by being large .