JPS63250992A - Cubic picture reproducing device - Google Patents

Abstract

PURPOSE:To directly view a cubic picture without putting on a lens or glasses by using liquid crystal in an element displaying respectively different image signals for cubic pictures and overlapping a contrast change with respect to the optic angle and the picture of a half mirror. CONSTITUTION:The contrast of a liquid crystal panel changes in accordance with an angle which a man views with eyes. Contrast becomes maximum at an angle theta1, and small at an angle theta2. In the position of a man's eye A, the contrast of the displayed picture in a liquid crystal panel 3b is viewed large, and the contrast of the displayed picture in a liquid crystal panel 3b small. In the position of a man's other eye B, the contrast of the displayed picture of the liquid crystal panel 3a is viewed small, and the contrast of the displayed picture in the liquid crystal panel 3b large. Consequently, the displayed picture in the liquid crystal panel 3a can mainly be viewed in the position of a man's eye A, and the displayed picture in the liquid crystal panel 3b in the position of a man's eye B, whereby the displayed picture can be viewed three- dimensionally.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF THE INVENTION The present invention relates to a stereoscopic image reproducing device for stereoscopically viewing a movie projected on a display device.

BACKGROUND OF THE INVENTION In recent years, with the development of video processing technology, various attempts have been made to view images displayed on display devices such as cathode ray tubes in three dimensions.

Hereinafter, a conventional stereoscopic image reproducing apparatus as described above will be explained with reference to the drawings.

First, the process of creating a video signal, which is the source of a stereoscopic image reproduction device, will be explained.

FIG. 3 is a professional diagram showing a method of creating a stereoscopic image signal that has been commonly used in the past. In Fig. 3, 5a and 5b are the camera and 6 ((signal processing circuit block. Therefore, the images shown by the cameras 5a and 5b are slightly different from each other, and this difference is what causes them to appear three-dimensional to the human eye.

FIG. 4 shows a general device for reproducing a three-dimensional image from the signal from the circuit shown in FIG. Apparatus, aa, 4b, ryo a, 7b is a prism, sa,
sb indicates a lens. The video signals obtained by the cameras sa and sb in FIG. 3 are respectively displayed on the display devices 3a and 3 in FIG.
It is displayed as b.

In the case of one display device 3a, this displayed image can be seen by one human eye through prisms 4a, 7a and lens 8ai. On the other hand, in the case of the display unit 3b, the image can be seen with the human's other eye via the prism 4b, the lens 8b, and the lens 8b. Therefore, if we put Figures 3 and 4 together, it means that one person is looking at the object using two cameras as their own eyes, and it is not much different from seeing the object directly with one's own eyes. It is possible to understand it as

No. 61 is an example of another conventional stereoscopic image reproduction device,
1 is a stereoscopic image signal processing circuit, 3 is a display device, and 4' is glasses with electric shutters. The video 1p signal is a stereoscopic image (・
The ρ signal processing circuit 1 processes the signals from the cameras 5a and 5b shown in FIG. 3 so as to alternately send them to the display device 3. On the other hand, correspondingly, the glasses 4 with electric shutters are turned on and off alternately to the A and B sides, and in the end, the images of the cameras 5a and 5b in FIG. 3 are viewed at points A and B, respectively. becomes possible.

Problems to be Solved by the Invention However, with the above-mentioned device, it is necessary for a person to fix the eyes to the lenses, or to force or remove the glasses.
It's unnatural in my opinion.

SUMMARY OF THE INVENTION In view of the above problems, the present invention provides an interactive image reproducing device that allows stereoscopic images to be viewed directly without wearing lenses or glasses.

Means for Solving the Problems In order to achieve this object, the three-dimensional image reproduction device of the present invention uses a liquid crystal display that changes contrast depending on two viewing angles, each displaying video signals projected by a camera from different angles. The panels are arranged at approximately right angles, and a )-fmirror is arranged near the intersection of vertical lines drawn from the center of each of the liquid crystal panels.

Function: With this configuration, the LCD panel takes full advantage of the fact that the contrast varies depending on the viewing angle, and the human eye can see an image on one side of the LCD panel with one eye, and see an image on the other side with the other eye. It becomes possible to view stereoscopic images without using lenses or glasses.

EXAMPLES Hereinafter, examples of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of an embodiment of a stereoscopic image reproduction apparatus according to the present invention. In FIG. 2a and 2b are the bank lights of the liquid crystal panels 3a and 3b, and 4 reflects the display image of the liquid crystal panel 3a; The liquid crystal display panel 3a and 3h are arranged near the intersection of vertical lines drawn from the center of each of the liquid crystal lines 3a and 3h. A and B indicate the positions of the left and right human eyes.

The operation of the stereoscopic image reproducing apparatus configured as described above will be described below.

A stereoscopic image signal such as the image signal captured by the cameras 5a and 5b in FIG. Camera 5a in Figure 3.

The image signals of 6b are displayed respectively.

Considering the characteristics of liquid crystal panels, as shown in Figure 2, as a characteristic of general liquid crystal panels, the contrast changes depending on the viewing angle, and the contrast reaches its maximum at a certain angle θ1. At other angles, for example θ2, the contrast becomes J.

Therefore, in the configuration shown in Figure 1, the arrangement of the liquid crystal panel is
If the left and right sides of the LCD panel in the figure are arranged as shown in Figure 1, then
At position A of one human eye, the contrast of the displayed image on the liquid crystal panel 3a is large, and conversely, the contrast of the displayed image on the liquid crystal panel 3b (the elephant) appears to be small. In this case, the contrast of the displayed image on the liquid crystal panel 3a appears to be small, and conversely, the contrast of the displayed image on the liquid crystal panel 3b appears to be large. At position B of the human eye, the displayed image on the liquid crystal panel 3b is mainly visible, and the displayed image can be viewed three-dimensionally.

Effects of the Invention As described above, the present invention uses a liquid crystal as an element for displaying mutually different video signals for stereoscopic images, and has features that change the contrast depending on the viewing angle and that the half-mirror image (insects can be superimposed). It can reproduce a 1° stereoscopic image without using lenses or glasses as in the past, and its practical effects are impressive.

[Brief explanation of drawings]

Fig. 1 is a block diagram of an embodiment of the stereoscopic image reproducing device of the present invention, the second factor is a diagram showing contrast characteristics with respect to the viewing angle of the liquid crystal panel, and Fig. 3 is a diagram showing the conventional stereoscopic image (imaging device that creates the , FIG. 4, and FIG. 5 are block diagrams showing examples of conventional stereoscopic image reproduction devices, respectively. 1... Stereoscopic image signal processing circuit, 2a, 2b...
-...Backlight, 3a, 3b...LCD panel, 4...Half mirror, A, B...
・The position of the human left and right eyes. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 3tLJb --- Go to Figure 2B Viewing angle

Claims (1)

[Claims] Two liquid crystal panels that display video signals captured by a camera from different angles and whose contrast changes depending on the viewing angle are arranged at approximately right angles, and the intersection point of a vertical line drawn from the center of each of the liquid crystal panels. A stereoscopic image reproduction device characterized by having a half mirror placed nearby.