JPS58117535A - Stereoscopic picture device - Google Patents

Abstract

PURPOSE:To view a clear motion picture in natural color at extremely low cost by using a device which projects a couple of pictures having specific parallax alternately and spectacles which allow light beam to reach a left and a right eye substantially by turns. CONSTITUTION:On a screen 1, pictures having specific parallax are projected by two projectors 2 and 2'. The spectacles 3 are provided with a shutter 5 which is driven by a motor on its left and right windows 4 and 4' to open and close the windows. The pictures projected on the screen 1 by the projectors 2 and 2' shift in projection phase by a half and while the picture of the projector 2 is projected, that of the projector 2' is cut off by the shutter. Thus, synchronous operation is carried out. In addition, the windows 4 and 4' are opened and closed through the operation of the shutter of the spectacles 3 synchronously with the speed of the projectors. When the picture of the projector 2 is projected, the window 4 is opened and the picture is viewed by the right eye.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a three-dimensional image device, and particularly to a three-dimensional image device that allows viewing natural-color moving images with a simple configuration.

Conventionally, many systems have been devised for three-dimensional image devices, but a device that can view natural-color moving images three-dimensionally has not yet been put into practical use.

In other words, for still images, the simplest method to view natural-colored 3D images is to use a columnar lens, but there is a problem with the sharpness of the image, and it is not practical for moving images. It is extremely difficult.

Furthermore, although the holographic method has the potential to produce moving images to some extent, it is difficult to produce natural color images, and the equipment is quite expensive, so its uses are limited. Furthermore, there is a method that uses glasses of different colors or polarization directions for the left and right eyes, but it is difficult to see images in natural colors.

The present invention is directed to a method that eliminates these drawbacks and allows viewing of clear, natural-color moving images at an extremely low cost. The details will be explained below with reference to the figures.

FIG. 1 is a perspective view showing the structure of an embodiment of the present invention. In FIG. 1, a screen 1 has two projectors 2,
and 2', an image with a certain parallax is projected. Reference numeral 3 denotes glasses, and left and right windows 4 and 4' are provided with shutters 5 driven by a motor (not shown), which are configured to open and close alternately. In addition, in the image projected on screen 1, the brightness and dimming of the images of projectors 2 and 2' are shifted by half a phase, and when the image of projector 2 is being projected, the image of projector 2' is shifted by the shutter inside the projector. When the image of the projector 2 is blocked by the internal shutter, the projector 2' is operated correctly in synchronization so that the image is projected from the projector 2'. On the other hand, the window 4 due to the rotation of the shutter 5 of the glasses 3
, 4' are also opened and closed in synchronization with the speed of the projector,
When the image from the projector 2 is being projected, the window 4 is open and the image can be seen with the right eye. Also, when the image is being projected by the projector, the window 4' is open and the image can be seen with the left eye. When an observer looks at the screen 1 wearing glasses 3, only the image of the projector 2 is visible to the observer's right eye, and only the image of the projector is visible to the left eye. Here, as described above, since there is a certain parallax between the images of the two projectors 2 and 2', the viewer can see the image on the screen 1 as a complete three-dimensional image. or,
If the viewer wears the glasses 3, the stereoscopic effect will not be impaired even if the viewer's position moves slightly in front of the screen. Therefore, if there are a plurality of glasses 3, a plurality of viewers can view the stereoscopic image at the same time.

In addition, the image projected by two projectors is twice as bright as the image projected by one projector, and even when wearing glasses 3 whose left and right windows 4 and 4' open and close alternately, it is almost as bright as a normal projector. It has the same brightness as the image. Further, the film used for projection in this manner may be photographed by synchronizing the photographing speed of a movie camera placed a certain distance laterally. Therefore, this method basically uses current movie cameras and projectors, and if the shooting and projection speeds can be completely synchronized, it is possible to easily create a stereoscopic image by simply opening and closing the glasses 3 mentioned above in synchronization. You can see the statue. However, operating the equipment is somewhat troublesome as it requires two movie cameras, two projectors, and two films.

FIG. 2 is a perspective view showing the configuration of another embodiment of the present invention. In FIG. 2, one projector 2 is mounted on the screen 1.
The image is projected from '. The structure of the shutter 5 for opening and closing the glasses 3 and the windows 4, 4' is the same as that shown in FIG. However, the frames 7 and 7' of the film 6 are alternately imprinted with images having a constant parallax. Furthermore, the frame speed of the projector is approximately twice that of a normal one, and frames 7 and 7' are projected onto the screen 1 in sequence and alternately. The shutter 5 of the glasses 3 is opened and closed the same number of times as in the case of Fig. 1, and when the projector of frame 7 is on the screen 1, the window 4 is open, and the observer can see the image with his right eye. I can do it. Furthermore, when the image of frame 7' is projected, window 4' is open, and the viewer can see the image with his left eye. In this way, a stereoscopic image device can be configured with one projector.

In this case, in order to make a film in which frames 7 and 7' are photographed alternately, it is necessary to use a camera with a special structure. FIG. 3 is a perspective view showing an embodiment of the camera used in the present invention.

In FIG. 3, the film 6 has two lenses 8, 8'.
The image passing through the mirrors 9 and 9' is formed via two mirrors 10 and 10' which move upward or downward every frame.

Then, on the film 6, which can be moved intermittently one frame at a time, as the shutter 11 that blocks the light rays is rotated while the film 6 is moving, images passing through the lens 8 and images passing through 8', that is, images 7 and 7' are alternately produced. A photo is included in the image. At this time, lens 8
A light emitting diode 13 is provided near the perforation of the film 6 and blinks so that a mark 12 is exposed at the same time that the image 7 passing through the film 6 is taken. When projecting, the left and right screens can be visually or electrically determined using these marks.

By using the film 6 thus produced, a stereoscopic image can be obtained extremely easily with a single projector as described above.

FIG. 4 is a perspective view showing the structure of another embodiment of eyeglasses used in the present invention. In FIG. 4, liquid crystal films 14 and 14' are fitted into windows 4 and 4' to transmit or block light depending on the energized state. Since such eyeglasses have no moving parts, they do not cause vibration during use, and can be made small and lightweight, allowing the present invention to be used in a wider range of applications.

FIG. 5 is a perspective view showing the structure of another embodiment of the present invention. In FIG. 5, the screen 1 and projector 2' in FIG. 2 are replaced by one television receiver 15.

In the case of television, currently each image of 30 frames per second is scanned twice to produce 60 frames per second, but by inputting images with parallax on the left and right for each scan, it is possible to improve the conventional broadcasting system. Three-dimensional broadcasting can be realized by using two channels without changing the width.

As is clear from the above explanation, the stereoscopic image device of the present invention can be widely applied to movies, television, videos, slides, etc., and the device is extremely simple compared to other systems, and by using special glasses, Nowadays, it is possible to view stereoscopic images in much the same way as listening to stereo through headphones, and its effects in the visual field are extremely remarkable.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the structure of an embodiment of the present invention. FIG. 2 is a perspective view showing the structure of another embodiment of the invention. FIG. 3 is a perspective view showing the structure of an embodiment of the camera used in the present invention. FIG. 4 is a perspective view showing the structure of another embodiment of eyeglasses used in the present invention, and FIG. 5 is a perspective view showing the structure of another embodiment of the present invention. 1. Screen, 2. Projector. 3. Glasses, 4.
Window, 5...Shutter 6...Film, 7...Frame, 8...Lens 9...Mirror, 10...Mirror, 11...Shutter, 12...Mark, 13...Light emitting diode, 14...Liquid crystal membrane, 15
...TV receiver patent applicant Yasushi Ueno■

Claims (1)

[Claims] A stereoscopic imaging device characterized by having a device that alternately displays a pair of images having a constant parallax and glasses that allow light rays to substantially alternately enter the left and right eyes.