JPS6112197A - Video display device - Google Patents

Abstract

PURPOSE:To obtain a stereoscopic color picture through a small set by disposing a mirror device in a rectangular parallelopiped space enclosed by phase plates of three video tubes so that two dichroic mirrors can be at 45 deg. with respect to an optical axis. CONSTITUTION:A dichroic mirror 22 for red reflection and dichroic mirror 23 for blue reflection are intersected in an X shape and disposed in a rectangular parallelopiped space enclosed by phase plates of video tubes 19, 20 and 21, while on an optical axis of the green video tube 20 a projection lens 24 is arranged. In terms of the red reflection dichroic mirror 22, the red video tube 19 and green video tube 20 are in the mirror image relation, while in terms of the blue reflection dichroic mirror 23, the blue video tube 21 and green video tube 20 are in the mirror image relation. Monochromatic pictures projected on the video tubes 19, 20 and 21 are synthesized to a color picture by two dichroic mirrors, and enlarged and projected on a lenticular screen (not shown in the figure) by the magnification lens 24.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an image display device that allows a viewer to sequentially view different color images three-dimensionally as the viewer moves from one viewing location to another.

Conventional configurations and their problems - In recent years, television receivers have been sequentially arranged as video sources.
2. Description of the Related Art An image display device has been proposed that allows an observer to sequentially view different images three-dimensionally by moving the observation location.

A conventional video display device will be described below with reference to the drawings.

FIG. 1 is a block diagram of a conventional video display device.
Reference numerals 3, 4, and 5 each represent an image source constituted by a television receiver; and 9, projections arranged on concentric circles whose optical axes coincide at a point 12 on the lenticule 13 at approximately parallax intervals. They are paired with lenses 6.7°, 8.9.10, respectively, and provide one image, which is projected onto a lenticular screen 13 via a half mirror 11. The observer... - Via the mirror 11, observe points 14, 16, 16, 17°1
8, the corresponding video sources 1, 2° 3.4
．． 5 images are supplied. Since the projection lenses are arranged at approximately parallax intervals, the observer can see 18, 17.17, 16.16, and 1 in the left and right eyes, respectively, by moving the position in the G direction.
5, 4.4 and 3.3 observed at locations 5.16 and 14
and 2.2 and 1 images are supplied. Of course, the images of the video source are provided to the observer as appropriate images for the left and right eyes at each position.

In the video device configured as described above, the video source 1
．． Images 2, 3, and 4.5 are projected using projection lenses 6.7, 8, and 9.
．． 10 respectively, and further via the No. 1-7 mirror 11, it is projected onto the directional lenticular screen 13, and the observation points 14, 15, 13 are projected by the No.-7 mirror.
'16, 1st, 18th. Therefore, when the observer moves in the direction of G, the right eye first appears at observation points 14 and 15, respectively.

The left eye is positioned and can see the first image.

Moving further in the direction of G, the right eye and left eye are located at positions 15, 16, 16, 17, 17, and 18, respectively.
You can see three-dimensional images that are sequentially synthesized.

However, Hiko told me that the above configuration was easy to implement with a monochrome picture tube, but with a color picture tube, the shadow mask of the CRT is noticeable and difficult to see due to the enlarged projection, and there is a shadow mask. Therefore, the beam transmittance is low and it is dark, and therefore the resolution is poor and it is difficult to get a three-dimensional effect. Image source 1, 2, 3, 4 to brighten
．． If 5 were constructed with a large picture tube, the observation points 14, 16 degrees, 16 degrees, 17 degrees, and 18 would need to be approximately parallax apart, resulting in a problem that the entire device would become large.

OBJECTS OF THE INVENTION An object of the present invention is to provide an image display device that solves the above-mentioned problems and allows an observer to observe a three-dimensional color image by sequentially moving from one observation location to another.

Structure of the Invention An image display device according to the present invention includes a mirror device in which dichroic mirrors for red reflection and blue reflection are orthogonal to each other;
Containing three green and blue picture tubes and lenses, the red and blue picture tubes are arranged in a T-shape with the previously recorded picture tube as the center so that their face plates are adjacent to each other at right angles, and ηj7 The mirror device is arranged in a rectangular parallelepiped space surrounded by the face plates of the three picture tubes so that the two dichroic ink mirrors are at an angle of 46° to the optical axes of the three picture tubes. It is constructed by sequentially arranging at least two video sources constructed by the above method, and provides a small set of easy-to-see, bright, and high-resolution color images with a stereoscopic effect.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 2 is a side view showing the configuration of an image source in one embodiment of the present invention. 19 is a red video tube, 20 is a green video tube,
21 is a blue picture tube, 22 is a red-reflecting dichroic mirror, 23 is a blue-reflecting dichroic mirror, and 24 is a projection lens.

FIG. 3 is a block diagram of a video display device according to an embodiment of the present invention, where 25, 26, 27, 28, and 29 are video sources having the configuration shown in FIG. 2, and 3o is a half-mirror 7-
131 is a lenticular screen, 32 is a point on the screen where the optical axes of the image sources intersect, 33, 34, 35, 3
6.37 are observation points.

The operation of the video apparatus according to this embodiment configured as described above will be described below. First, video tubes 19 and 20
．． A dichroic ink mirror 22 for red reflection and a dichroic mirror 23 for blue reflection are arranged in an X-shape in a rectangular parallelepiped space surrounded by a face grating 21, and a projection lens is placed on the optical axis of the green picture tube 2Q. 24 are placed.

With respect to the red-reflecting dichroic mirror 22, the red picture tube 19 and the green picture tube 20 are in a mirror image relationship, and with respect to the blue-reflecting dichroic mirror 23, the blue picture tube 21 and the green picture tube 20 are in a mirror image relationship. .

The monochromatic images projected on the video tubes 19, 20, and 21 are combined into a color image by two dichroic mirrors.
Lenticular screen 31 by magnifying lens 24
The image is enlarged and projected. Image source 26°26.27,'28
．． 29 are arranged on concentric circles at approximately parallax intervals so that their optical axes intersect at a point 32 on the lenticule. Therefore, due to the directivity of the lenticule, the image sources 25 and 2
6, 27.

The image from 28.29 is observation point 33.34.35°36
．． 37, and when the observer moves in the direction P, the observer's right eye and left eye are sequentially located at positions 33, 34, 34, 35, 36, 36, 36, and 37, and the image sources 25 and 26 ．．
Observe the images of 26, 27, 27, 28, 28 and 29,
At each location, the viewer can observe a three-dimensional color image that is a composite of the paired images. Of course, the images of the video source are provided to the observer as appropriate images for the right and left eyes at each position. The picture tubes 19, 20, 21 are monochromatic tubes without a shadow mask, and are synthesized with almost no loss at the dichroic mirror = 22.23, so they are bright, easy to see, and can be configured with small picture tubes.

Next, other embodiments of the present invention will be described with reference to the drawings.

FIG. 4 shows a configuration diagram of a video display device according to another embodiment of the present invention. In Figure 4, 38.39.
40. jl and 42 are image sources similar to those described in FIG. 2, 43 is a half mirror, 144 is a lenticular screen, and 46 is an image source 38, 39, 40.
, 41.42, points 46, 47.4B, and 49.50 on the lenticular screen where the optical axes coincide are observation points, respectively.

The operation of the video display device of this embodiment configured as described above will be described below. First, video sources 38, 40 .
42 are arranged at substantially parallax intervals, and image sources 39 and 41 are arranged between image sources 38 and 40.4Q and 42, respectively. Here, as described above using FIG. 2, each video source has three video tubes arranged vertically in a T-shape, so that the distance between the video sources can be reduced. Therefore, they are arranged on concentric circles. The image from the image source is passed through a half mirror 43 to a lenticular screen 44.
The image is enlarged and projected. Due to the directivity of the lenticular screen 44, the viewer can see the image from the image source 38, 39, 40, 41, 42 through the half mirror 43 at the observation point 46.
47.48°49.60, and as the observer moves in the direction of Q, the observer's right eye and left eye sequentially receive 46 and 48.4.
Located at positions 7 and 49, 48 and 60, video sources 38 and 4
By observing the images of 0, 39, 41, 40, and 42, the viewer can observe a three-dimensional color image that is a composite of the paired images at each position. The distance between the positions where three-dimensional color images can be observed is the image sources 38, 39, 40.
, 41, 42 are narrowed, so the distance is narrower. Therefore, by sequentially moving in the G direction, the viewer can observe a more continuous three-dimensional color image. In the above embodiments, there is one video source between the video sources at approximately parallax intervals, but there may be two or three video sources.

Effects of the Invention As is clear from the above explanation, the present invention uses an image source configured to combine three video tubes with a dichroic mirror, so that it is easy to see, bright, and has high resolution. Furthermore, since the three video tubes are arranged vertically in a T-shape, it is possible to realize a small-sized video display device that allows viewing of continuous three-dimensional images.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a conventional video display device, FIG. 2 is a side view of a video source of a video display device according to an embodiment of the present invention, FIG. 3 is a block diagram of the video display device, and FIG. FIG. 3 is a configuration diagram of another embodiment of the present invention. 19... Red picture tube, 2o... Green picture tube, 21... Blue picture tube, 22... Red reflective dichroic mirror, 23. ...Blue reflective dichroic mirror, 24...Projection lens, 30,43...C Fig. 1 Fig. 2Fg4 Fig. 3 2.5 Fig. 4

Claims (1)

[Claims] A mirror device including a red-reflecting dichroic mirror and a blue-reflecting dichroic mirror orthogonal to each other, three red, green, and blue picture tubes, and a lens, and the red and blue picture tubes are centered around the green picture tube. are vertically arranged in a T-shape so that their face plates are adjacent to each other at right angles, and the two dichroic mirrors are placed in a rectangular parallelepiped space surrounded by the face plates of the three picture tubes. 1. A video display device comprising at least two video sources configured by arranging the mirror device at 45 degrees with respect to the optical axis of a video tube.