JPH05158150A - Picture display device capable of wide-angle display - Google Patents

Abstract

PURPOSE:To provide a display device which has wide display angle and which can display pictures smoothly connected in a viewing direction even when the pictures are viewed from plural directions. CONSTITUTION:A picture converter gives picture information obtained by correcting the influence of the distortion of a displayed picture when the picture is projected on a reflecting device 3 to a projecting device 2. The projecting device 2 projects the picture information given by the picture converter to the reflecting device 3. The direction of a projected picture is changed by the reflecting device 3, and the projected picture enters in the visual field of a human being. The picture can be viewed from the entire periphery of the display device by making the reflecting device 3 conical shape, for example. And the projecting devices are plurally provided and the plural pictures of the projecting device are composed, so that stereoscopic display can be executed, for example.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display device, and more particularly to an image display device having a wide display angle.

[0002]

2. Description of the Related Art A CRT is generally used as a means for displaying an image, and it fulfills almost a sufficient function in terms of display speed and display quality. However, the display surface is 1
The display is limited, and you can only see the display from a limited number of directions. Multiple CRs to display in a wide range
Although a method of displaying by combining T units is also adopted, the device for that purpose becomes large in size, and it is very difficult to control to display an image as one image smoothly connected between a plurality of units. Has become.

Furthermore, because there are joints between the units, the image is divided into parts, which gives a great discomfort to the viewer.

It is expected that the presentation of information using images will become an important technology in the future, and for that purpose, a display device that many people can see at once is indispensable. However, if a device having a limited directional property such as the above-mentioned CRT is combined for display, a large-scale device and complicated control are required, and it cannot be widely used in general.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned drawbacks of the conventional device, and has a wide display angle and follows the viewing direction even when viewed from a plurality of directions. It is an object of the present invention to provide a display device composed of a single device capable of displaying smoothly connected images.

[0006]

FIG. 1 is a diagram showing the basic configuration of the present invention. In order to solve the above-mentioned problems, in the present invention, as shown in FIG.
And a reflection device 3 that reflects the projected image of the projection device 2 in a plurality of different directions, and an image conversion device 1 that corrects the influence of image distortion caused by the reflection device 3.

In addition to the above configuration, in the present invention, it is possible to provide a plurality of projection devices 2 and a means for synthesizing the images of the plurality of projection devices 2. Further, by changing the reflection ability of the reflection device 3, it is possible to combine the images of the plurality of projection devices 2.

[0008]

The image conversion device 1 provides the projection device 2 with image information in which the influence of the distortion of the displayed image when the image is projected on the reflection device 3 is corrected. The projection device 2 projects the image information given by the image conversion device 1 onto the reflection device 3. The projected image is redirected by the reflector 3 and enters the field of view of the human 5.

By forming the reflecting device 3 into a conical shape, for example, an image can be viewed from the entire circumference of the display device. In addition, for example, stereoscopic display can be performed by providing a plurality of projection devices 2 or combining images of the plurality of projection devices.

[0010]

FIG. 2 is a diagram showing a first embodiment of the present invention.
In the figure, 11 is an image conversion device, 12 is a projection device,
13 is a reflection device, 14 is a projection image display portion of the projection device,
Reference numeral 15 is a person viewing the display image, 16 is a protection device, 17 is a display image before conversion, A is a side view of the device, and B is a view.
[Fig. 3] is a view of the device seen from above.

An image conversion device 11 in the figure is a conversion means for correcting distortion generated when an image is projected on a reflection device, and a projection device 12 is composed of, for example, a CRT and is a means for projecting an image on the reflection device 13. Reflector 13
Are placed in the direction of the top of. The reflection device 13 is means for reflecting the projection image formed of a conical mirror surface, and the projection image display portion 14 is the projection image display surface of the projection device 12.

Further, the protection device 16 has a cylindrical shape and is a means for protecting the reflection surface of the reflection device 13.

Next, a method of displaying an image by the image display device of FIG. 2 will be described. The image conversion device 11 provides the projection device 12 with image information in which images such as computer graphics and photographs are pre-distorted so that a correct image is reproduced when the image is projected on the reflection device 13. The projection device 12 is composed of, for example, a CRT, and projects the image converted by the image conversion device onto the conical reflection device 13. The direction of the image projected by the projection device 12 is changed to the horizontal direction by the reflection device 13 and enters the field of view of the human 15.

According to the apparatus of this embodiment, the displayed image can be viewed from the horizontal angle of 360 degrees, and
Images look smooth from any direction, and the viewer does not feel discomfort.

FIG. 3 shows a second embodiment of the present invention. In FIG. 3, reference numerals 21 and 22 are projection devices, 23 is a reflecting device composed of a half mirror, 15 is a person who looks at a display image, and 16 is a reflection device. It is a protective device. Although not shown, the projection devices 21 and 22 are each provided with the image information converted by the image conversion device, as in the first embodiment.

In the present embodiment, the projection devices 21 and 22 are provided in the apex direction and the bottom surface direction of the reflecting device 23, and project an image from the outer surface and the inner surface of the reflecting device 23 composed of a half mirror. The reflecting device 23 is not a perfect specular body but a semi-specular body having a certain degree of transparency, and synthesizes the image projected on the inner surface and the image projected on the outer surface.

According to the apparatus of this embodiment, the displayed image can be seen from the angle of 360 degrees in the horizontal direction, and the two images can be combined, as in the first embodiment. , For example, by projecting an image for the left eye from the upper surface, an image for the right eye from the lower surface, and separating the image of the left eye and the image of the right eye with glasses with a liquid crystal shutter,
3D display can be performed.

FIG. 4 shows a third embodiment of the present invention, 15
Is a person viewing the display image, 31 is a projection device, 33 is a reflection device, 37 is a lens, 38-1 is a side projection image display portion of the projection device 31, 38-2 is a top projection image display portion, and A is The device is viewed from the side, and the device B is viewed from the top. As in the first and second embodiments, the projection device 31 in the figure is provided not at the apex of the reflection device 33 but at the intermediate portion of the reflection device 33.
A lens 37 is provided on the upper surface of the. Although not shown, the projection device 31 is provided with the image information converted by the image conversion device, as in the first embodiment.

In the present embodiment, not only from the side,
It is configured so that the image can be seen even from the above, and the projection device 31 has a structure as shown in FIG.
An image to be projected on the upper surface is displayed on the upper surface projected image display portion 38-2 in the central portion, and the side surface projected image display portion 3 around it is displayed.
An image to be projected on the side surface is displayed on 8-1. The end of the reflection device 33 is arranged at the boundary between the top projection image display portion 38-2 and the side projection image display portion 38-1.

Therefore, when viewed from the top of the device, the top projection image display portion 38-2 is seen through the lens 37.
Can be seen, and when viewed from the side, the first
Similar to that of the embodiment of FIG.
Can be seen.

Since the structure of the present embodiment is constructed as described above, there is no part where nothing is displayed unlike the case of viewing from the top of the first embodiment, and there is no blind spot. No display device can be configured.

FIG. 5 shows a fourth embodiment of the present invention, 15
Is a person viewing the display image, 42 is a projection device, 43 is a reflection device, 43-1 is the first display surface of the reflection device, 43-2 is the second display surface of the reflection device, and 44 is the projection of the projection device 42. An image display portion, 46 is a protective device, A is a view of the device viewed from the side, and B is a view of the device viewed from the top. In the figure, the reflection device 43 is not a conical shape but a quadrangular pyramid, and the projection device 42 is an image in which images to be projected on the first display surface 43-1 and the second display surface 43-2 are continuous. It is projected so that it can be seen as. Although not shown, similarly to the first embodiment, the projection device 42 is provided with the image information converted by the image conversion device.

In the present embodiment, as in the first embodiment, the displayed image can be seen from an angle of 360 degrees in the horizontal direction, and the images are smoothly continuous from any direction. , It does not give the viewer a feeling of strangeness.

In the above embodiment, an example of using a conical or quadrangular pyramidal reflector is shown, but the reflector is not limited to the above-mentioned shape, and triangular pyramids and other irregularities may be used. A reflection device having any shape, such as a provided reflection device, can be used.

[0025]

As is clear from the above description,
In the present invention, since the image projection device and the reflection device are combined, an image display device having a very large display angle can be constructed. Further, since the number and position of projection devices, the shape and number of reflection devices, the reflection ability and direction, etc. can be freely combined, not only can the display angle be widened, but the display device can be used as a display device with various special effects. be able to.

Further, since the shape of the display device can be changed in various ways, it can be used in a place where the existing display device cannot be used.

[Brief description of drawings]

FIG. 1 is a diagram showing a basic configuration of the present invention.

FIG. 2 is a diagram showing a first embodiment of the present invention.

FIG. 3 is a diagram showing a second embodiment of the present invention.

FIG. 4 is a diagram showing a third embodiment of the present invention.

FIG. 5 is a diagram showing a fourth embodiment of the present invention.

[Explanation of symbols]

 1,11 Image conversion device 2,12,21,22,31,42 Projection device 3,13,23,33,43 Reflection device 16,46 Protection device 37 Lens

Claims (4)

[Claims] 1. A projection device (2) for projecting an image, a reflection device (3) capable of reflecting a projection image of the projection device (2) in a plurality of different directions, and a reflection device (3). An image display device capable of wide-angle display, comprising an image conversion device (1) for correcting the effect of image distortion that occurs. 2. The image display device capable of wide-angle display according to claim 1, wherein the image display device has a plurality of projection devices (2). 3. The wide-angle displayable image display device according to claim 2, further comprising means for synthesizing images from a plurality of projection devices (2). 4. The image display device capable of displaying in a wide angle according to claim 3, wherein the images of the plurality of projection devices (2) are combined by changing the reflection ability of the reflection device (3).