JPH06230487A - Multi-lens stereoscopic picture display device - Google Patents

Abstract

PURPOSE:To realize a multi-lens stereoscopic picture display by an ordinary projector without using a special projector by transmitting an image by a fiber bundle consisting of fine optical fibers, using the ordinary wide projector and setting the projecting interval of a multi-lens image to an interval between both eyes or 1/n (n: integer) of it. CONSTITUTION:The one-side end faces of the optical fiber bundles 3-1, 3-2,... are allowed to correspond to the projection surfaces of the existent ordinarily used projectors 2-1, 2-2,.... Then, the other-side end faces of the optical fiber bundles 3-1, 3-2,... are arranged at the interval between both eyes of a human being or 1/n of it so as to constitute a projection part 4 to a lenticular screen 5. The image projected from a projector group 20 consisting of the projectors 2-1, 2-2,... is reflected on the screen 5 and diffused in the vertical direction of the image, and it is reflected in the incident direction of incient light in the horizontal direction thereof, so that an observer 1 positioned just under the projector group 20 independently observes two adjacent images out of the images arranged at the intervals between both eyes by right and left eyes.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-view stereoscopic image display device for displaying a stereoscopic image by projecting a plurality of images of the same object viewed from different angles on a self-focusing screen. It is used in a field requiring a stereoscopic image with a high sense of reality, for example, a stereoscopic display device such as a stereoscopic movie or a stereoscopic TV phone.

[0002]

2. Description of the Related Art One of the methods for displaying a stereoscopic image without using special glasses is to use a self-converging screen such as a lenticular lens to return the projection light of a group of image projectors arranged in parallel to each projection position. Utilizing this, there is a method in which multiple projectors are installed above the observer's head or under the floor to perform projection.

FIG. 2 shows the structure of the prior art. In the figure, 10 is a subject, 11-1 to 11-6 are input cameras, 12
-1 to 12-6 are projectors, and 13 is a screen. A large number of input camera groups 11 installed at different horizontal positions
The image groups obtained by -1 to 11-6 are the projectors 12 arranged in parallel with the human eye distance or an integer fraction thereof.
It is projected by the groups 1 to 12-6 onto a screen 13 having a self-focusing property such as a lenticular screen.
The light reflected by the screen 13 is diffused in the vertical direction of the screen, but is reflected in the incident direction of the incident light in the horizontal direction. An observer located directly under the projector feels a stereoscopic effect from the binocular parallax between the two images by independently observing two adjacent images of the images arranged at the distance between the eyes with the left and right eyes. Further, the effect of motion parallax is reproduced by observing a stereoscopic image viewed from different angles of view according to the movement of the observer's head. In this case, the projector distance must be set to be equal to or equal to the human eye distance, or a fraction thereof.

[0004]

In order to realize the above stereoscopic effect, all adjacent image projectors must be arranged at the distance between the eyes or at an integer fraction thereof. In order to achieve this, if a wide projector is placed side by side, the projection interval becomes wider and it becomes impossible, so a special projector with a narrow projection interval must be developed.

It is an object of the present invention to solve the above problems and to realize multi-view stereoscopic image display by a normal projector without using a special projector.

[0006]

According to the present invention, in a multi-view stereoscopic image display device using a self-focusing screen such as a lenticular lens, projection images of a large number of projectors are projected onto one end face of an optical fiber bundle. , By arranging the end faces on the opposite side in parallel with the distance between both eyes of a human or an integer fraction thereof and projecting each on a self-converging screen, it is possible to perform multi-view stereoscopic image display without using a special projector. Is composed of.

[0007]

According to the present invention, the image transmission by the fiber bundle made of fine optical fibers is used, and thus the projection interval of the multi-view image is set to the binocular interval or a fraction thereof by using a wide projector. To do. As a result, it is possible to realize multi-view stereoscopic image display that smoothly changes according to changes in the observer position without using a special projection device whose width is equal to or less than the binocular distance.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a diagram showing an embodiment of the present invention, FIG. 1 (A) is a top view of this system, and FIG. 1 (B) is a side view thereof.

Each of the projectors 2-1 and 2-1, which constitute the projector group 20,
2-2, ... are existing projection devices that are commonly used. The optical fiber bundles 3-1, 3-2, ... Can output the light incident on one end face from the other end face. This optical fiber bundle includes, for example, "FIB" commercialized by Galileo, Inc. in the United States.
ER OPTIC FACE PLATE "can be used. One end surface of this optical fiber bundle 3-1, 3-2, ... Is made to correspond to the projection surface of the projectors 2-1, 2-2 ,. , Optical fiber bundles 3-1 and 3
The other end surfaces of −2, ... Form the projection unit 4 on the lenticular screen 5 by arranging them at an interval between the eyes of a human being or an interval that is an integer fraction thereof. The projection unit 4 may have any structure as long as the end faces of the optical fiber bundle can be arranged in parallel at a predetermined interval.

Each image is first projected on the end faces of the optical fiber bundles 3-1, 3-2, ... By the projector group 20. The end surface of each optical fiber bundle on the projection unit 4 side is arranged in the horizontal direction at the distance between the eyes or at an integer fraction thereof, and each transmitted image is projected again on the lenticular screen 5 having self-focusing property. It The light reflected by the lenticular screen 5 is diffused in the vertical direction of the screen, but is reflected in the incident direction of the incident light in the horizontal direction, so that the observer 1 located immediately below the projector group 20 can see the left and right eyes. Of the images lined up between the eyes,
Two adjacent images will be observed independently.

The image projected from the projector group 20 is a stereoscopic image if it is an image input from the input camera group as shown in FIG. 2, but the image is not limited to this and may be an image created by image processing of a computer.

[0012]

As described above, according to the present invention,
The multi-view stereoscopic image display device, which was previously impossible without developing a special projector system, can now be realized using existing projectors. As a result, it is possible to flexibly respond to changes in specifications such as improvement in the brightness of the projector section, and to configure a system with a high degree of freedom.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of the present invention.

FIG. 2 is a diagram showing an example of a conventional multi-view stereoscopic image display device.

[Explanation of symbols]

 1 Observer 2-1, 2-2, ... Projector 20 Projector group 3-1, 3-2, ... Optical fiber bundle 30 Optical fiber bundle group 4 Projection part 5 Lenticular screen

Claims (1)

[Claims] 1. A multi-view stereoscopic image display device for displaying a stereoscopic image by projecting a plurality of images of the same object viewed from different angles, and a plurality of projectors corresponding to the plurality of images. , The projection images of the respective projectors are arranged so as to be projected on the first end face, respectively, and the second end face on the opposite side is arranged substantially at the human eye interval or at an interval of an integer fraction thereof. A plurality of optical fiber bundles corresponding to a plurality of projectors;
A multi-view stereoscopic image display device, characterized in that the light emitted from the end face of the is projected onto the self-focusing screen.