JPH08110494A - Stereoscopic image system - Google Patents

Abstract

PURPOSE: To make people easily observe a colored stereoscopic image by composing the system of a display screen vertically displaying both stereoscopic screens and a spectacle having a refraction angle for superposing both screens so as to reverse the left and right to each other in the longitudinal direction and orient them inward to each other in the lateral direction. CONSTITUTION: This system has a displaying surface 11 divided in the middle part and vertically displaying stereoscopic screens L, R and a stereoscopic image is obtained as the image in front of eyes by observing both screens through a spectacle 12 whose refraction angle is mutually reversed in the longitudinal direction, faces inward in the lateral direction and dioptor is different depending upon the viewing position. The optical axes of the displaying surface are vertically and reversely deviated for the left and right eyes in the longitudinal direction and deviated inward for the left and right eyes in the lateral direction since the axex are located in the center of eyes agaist the optical axis located just in front of eyes. Consequently, both screens of the displaying surface are observed as the stereoscopic image through an optical system having lateral ly and a vertically opposed refraction angle in the longitudinal direction and an optical system having a refraction angle refracted inward in the lateral direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stereoscopic image system.

[0002]

2. Description of the Related Art The most common stereoscopic image system to date is to use two viewing images (hereinafter referred to as a stereoscopic image) forming a stereoscopic image in "viewing glasses" such as a stereoscopic viewer.
There is a so-called peep glasses system in which a stereoscopic image is seen by looking in. This looks through the two screens placed left and right by the distance between both eyes through glasses, the left screen is the left eye,
In addition, the right screen is a system for obtaining a stereoscopic image in which both screens are overlapped by viewing the right screen in a one-to-one correspondence. When the screen is slightly large, a prism is added to the eyepiece lens to refract the optical axis outwards to make it easier to move the eyes so that the eye can move in the left-right direction. There are also things that help the movement of. However, with this method, the glasses are fixed at a distance close to both stereoscopic screens, as it is said to be a peep type, so it was originally only possible to see it. Also,
As a stereoscopic image system in which a plurality of people can see a large screen like a movie or a television, there is a glasses-type stereoscopic image system in which each person wears glasses to view a stereoscopic image. However, in this conventional method, for example, a color image is not possible with a method using red and blue two-color glasses, and a color image is possible with a polarized glasses method using left and right polarized lights, but the device is complicated. Moreover, there was a problem such as a dark screen. In the case of the peep glasses type, color images are possible, but as mentioned above, it can only be viewed by one person. In addition, the screens of televisions and movies are generally horizontally long, but this is not limited to the example of panoramas, and the lateral expansion of the field of view gives a more three-dimensional effect to human vision. It depends. However, the conventional spectacles type has been a system in which both stereoscopic screens are arranged side by side on the display surface to obtain a stereoscopic image. This is because in the case of the spectacles system, the viewing angle adjustment operation is performed with both eyes to see both stereoscopic images as a stereoscopic image, but since this is possible only in the left and right direction, the adjustment of the refraction angle by the prism also plays an auxiliary role for the eye. Similarly, since it is premised that it is performed in the left-right direction, it is necessary to arrange both screens side by side. However, this method has a drawback that it is difficult to construct a horizontally long screen because the horizontal spread of the screen is blocked.

[0003]

On the other hand, according to the present invention, a bright color stereoscopic image is displayed on a display screen that can be viewed by a plurality of people from any position such as a movie or a television.
It is intended to realize a stereoscopic image system of glasses type that enables a plurality of people to easily see it with a more stereoscopic effect, and further realize a simple stereoscopic image system of polarized glasses by using this principle. .

[0004]

Specifically, in the first configuration of the present invention, a display screen for displaying both stereoscopic screens vertically and a left and right screens are mutually opposite in the vertical direction and in the horizontal direction. Is composed of eyeglasses having a refraction angle that overlaps both screens inward with each other, and realizes a stereoscopic image system in which a landscape screen can be easily configured by viewing the display screen through the glasses.

In the second structure of the present invention, a display screen which displays both stereoscopic screens on the left and right, and which can be viewed by changing the position, and a refraction angle at which both screens are overlapped corresponding to the viewing position. It is realized by a method of obtaining a stereoscopic image by observing the display screen from an arbitrary position through the spectacles.

Further, in the third structure of the present invention, different polarized lights are passed through the three-dimensional screens, and the both screens are superimposed and projected on the screen through the refractive optical system. It realizes the stereoscopic image system of the polarized glasses type for viewing.

[0007]

According to the present invention, since the angle adjustment operation of both eyes of the human being is originally only in the left and right direction, the conventional stereoscopic both screens can be incorporated only in the left and right directions. By using the spectacles of the present invention capable of adjusting, both screens can be incorporated vertically, and a horizontally long stereoscopic screen can be easily obtained. Further, the display screen of the present invention in which both stereoscopic screens are displayed vertically or horizontally can be viewed from a free position like a TV or a movie, but the size of the screen to be viewed depending on the position and therefore the angle may be different. come. In order to superimpose these two screens for stereoscopic viewing, it is necessary to change the optical axis through the optical system of the glasses so that both screens can be seen in front of the left and right eyes. Therefore, in the spectacles of the present invention, the angle of the screen that differs depending on the viewing position is exactly the front of both eyes depending on the method of combining the reflecting mirrors and adjusting the angle, or the method of selectively combining the variable refraction angle prism and the prisms of various refraction angles. The angle is adjusted so that you can see. This enables the display screen to be viewed stereoscopically from any position. Further, according to the present invention, both screens separated on the display surface are refracted and projected through different polarizing plates, thereby enabling a simple stereoscopic image system in which stereoscopic viewing is possible with polarizing glasses.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment of the first structure of the present invention, and FIG. 4 shows an example of the structure of the glasses of this embodiment using prisms. FIG. 1 has a display surface 11 that is divided at the center and displays three-dimensional screens L and R on the upper and lower sides. The refraction angles of these two screens are opposite to each other in the vertical direction and inward in the horizontal direction. A stereoscopic image is obtained by viewing as images coming in front of both eyes through the glasses 12 facing each other and having different degrees depending on the viewing position. In addition, in FIG.
An example is shown in which prisms having different refraction angles are used as the eyeglasses depending on the viewing position. Next, the function of the glasses for looking at this display surface is shown in FIG. That is, when viewing both screens through glasses, the optical axis 1a of this display surface is upside down with respect to the left and right eyes in the vertical direction with respect to the optical axis 1b which is in front of the eyes of the viewer. There is a shift, and since it is in the center of both eyes in the lateral direction, it is shifted inward with respect to the left and right eyes. Therefore, both screens of this display surface are provided with the optical system 12a having the opposite refraction angle α1 vertically in the vertical direction.
In the lateral direction, through the optical system 12b having the refraction angle α2 for inward refraction, and looking in front of each of the left and right eyes, the images can be seen as a superimposed stereoscopic image. As can be seen from the figure, the larger the display surface and the shorter the distance, the larger the vertical and lateral refraction angles of the glasses, so
The refraction angle required for superimposing images differs depending on the viewing position. Therefore, it is possible to see a stereoscopic image at an arbitrary position by using glasses of an optical system capable of changing and adjusting the refraction angle. The above-described prisms that bend vertically and horizontally can actually be easily realized by plastic molding or the like, which are integrated as indicated by arrows in 12L and 12R in the figure. Further, when the distance from the display surface is long, or when the depth feeling is not required so much, there may be a case where the inward refraction in each lateral direction may not be necessary.

When this refraction angle adjustment is performed using a reflecting mirror, it can be configured by using two reflecting mirrors 13a and 13b for each of the left and right objectives and eyepieces shown in FIG. The angle can be adjusted with either the objective or eyepiece mirror by adjusting the vertical angle with the objective mirror and adjusting the horizontal angle with the eyepiece. Further, as shown in FIG. 6, if the configuration is viewed from above or below, it is possible to use one objective mirror 13a for each of the left and right sides, although the image is a reverse image. In this case, if a reverse image is recorded through one mirror in the same manner at the time of photographing, a normal image is obtained by reversing the image during image reproduction. Of course, these are the same principle even if a combination of reflecting prisms is used, and they can be configured in the same manner. As a simpler method, as shown in FIG. 7, it is possible to realize it by using only one of spectacles having two mirrors, an objective and an eyepiece. In this case, the distance error that occurs during shooting can be corrected by looking at the screen on the opposite side through a mirror.

When a refraction prism is used as the left and right lenses of spectacles, basically, a prism having a transparent fluid sandwiched between wedge-shaped transparent plates is used. This can be realized by using a variable refraction angle prism having a configuration capable of making variable. However, since this is a prism having a slightly complicated mechanism, there is a method in which it is configured by combining prisms having different refraction angles as an easier realization method. A pair of prisms having a characteristic that left and right are refracted vertically in the vertical direction and inward in the horizontal direction are incorporated in the eyeglasses. That is, a plurality of left and right lens bears are formed by the prisms having different refraction angles, and these are switched and used. Specifically, in FIG. 8, for example, a structure in which a plurality of lens bears L1 R1, L2 R2, and L3 R3 are vertically moved and switched, and in FIG. 9, a structure in which these lens bears are horizontally moved and switched,
In FIG. 10, a structure in which a plurality of lenses are replaced and combined,
In FIG. 11, there is a method of arranging these lens bears in a disk shape and rotating them to switch over, and in FIG. 12, there is a method of separating the disks into left and right. Also, when these separate prisms are lined up in order, it is possible to obtain an arbitrary refraction angle steplessly by using prisms whose refraction angles are continuously changed instead of arranging them, and further stack these lens bare plates in multiple stages. If so, more combinations of refraction angles can be obtained.
In addition, the display surface is standardized to several screen sizes such as TV screens, and when the combination of these sizes and viewing distance is almost decided, or the position and seat to watch on a certain screen is decided like a movie. If
It becomes possible to selectively set and use eyeglasses having a dedicated refraction angle according to each position.

An apparatus for taking a picture by incorporating both stereoscopic screens on the upper and lower sides of the display surface is the same as that for viewing the screen in principle. As a concrete example, as shown in FIG. 13, each screen has an objective 33a and an eyepiece 33b. It can be constructed using two mirrors. Of course, this can also be configured by using a reflecting prism on the same principle. The desired display surface can be easily obtained by mounting the device 32 in front of the camera 34 for photographs, movies, videos and the like and photographing the subject 30.

FIG. 14 shows, as another embodiment of the first configuration of the present invention, a case of so-called spectacles type in which the display surface is viewed by oneself with spectacles. Since the distance between the display surface 11 and the eyeglasses is fixed close to each other, the left and right eyeglasses are refracted in opposite directions in the vertical direction with respect to both screens, and further in the left-right direction as opposed to the conventional left-right screen method. It is composed of fixed prisms 12L and 12R whose optical axes are refracted inward.

FIG. 2 shows an embodiment of the second constitution of the present invention, and FIG. 15 shows the structure of the eyeglasses in this embodiment. 2 is composed of a display surface 21 that is divided into left and right stereoscopic images L and R at the center and eyeglasses 22 having different refraction angles depending on the viewing position, and viewing the display surface through the eyeglasses. To obtain a stereoscopic image. In addition, in this figure, the case where prisms are used as the glasses is shown as an example. Next, the function of the spectacles will be described with reference to FIG. 15 using a prism as an example. First, through glasses, to see both images as a stereoscopic image,
It is necessary to refract the optical axes 2a from both screens L and R on the display surface 21 in the same figure to the outside by the prism optical system 22a of the spectacles so as to be aligned with the optical axes 2b coming to the front of both eyes. At this time, the larger the display surface and the shorter the distance between the display surface and the spectacles, the larger the refraction angle β required for the spectacles. That is, in this case, unlike the case of the spectacles type in which the lens is fixed near the screen, the refraction angle β necessary for superimposing images differs depending on the viewing position, so the refraction angle of this optical axis is made variable. Realization of glasses that can be adjusted depending on the position enables stereoscopic viewing.

When the refraction angle is adjusted by a reflecting mirror,
Left and right 22L and 22R of the glasses 22 shown in FIG.
Can be realized by using two mirrors, the objective mirror 23a and the eyepiece 23b. The angle can be adjusted with either the objective or eyepiece mirror. Of course, this is the same in principle and can be configured by a combination of reflecting prisms. Further, it goes without saying that the simple method used in FIGS. 6 and 7 can also be realized in the same way, even in the case of the left and right assembling, only the vertical direction is the horizontal direction.

In the case of using a refraction prism, basically, as in the case of incorporating both screens above and below, a variable refraction angle prism in which a transparent fluid is sandwiched between transparent plates matched to the wedge-shaped angle is used. It can be realized by using it. But,
A simpler method can be realized by combining prisms with different refraction angles. As the spectacles, a plurality of right lens bears are formed by prisms each having an outward refraction and a refraction angle different depending on the distance, and the right lens bears are switched to be usable. For this purpose, a configuration exactly the same as that of arranging both screens in the vertical direction shown in FIGS. 8 to 12 is possible. As in the case of displaying both stereoscopic screens vertically, when the combination of screen size and viewing position is decided when displaying horizontally, glasses with a dedicated refraction angle adapted to each position. Can be selected and set for use. The method of incorporating the left and right screens on the display surface is the same in principle as when viewing the screen, and can be realized by the structure in which the reflecting mirror is fixed in the configuration of FIG. Of course, also in this case, a reflecting prism can be used for the same principle.

As for each pair of eyeglasses included in the present invention, the stereoscopic effect can be increased by enlarging the display surface by adding the function of a convex lens, as in the case of the conventional eyeglass type. Further, when the prisms are combined, the refraction function of the prisms and the function of the convex lens can be integrated, and at present, it is possible to easily realize the compound lens by plastic molding or the like.

Further, as a third structure of the present invention, if it is applied to a video system in which a display surface having both stereoscopic screens is projected on a screen such as a television liquid crystal projector screen or a film screen of a movie, a simple structure is obtained. It is possible to realize a stereoscopic image system using polarized glasses. FIG. 3 shows an example of the configuration.
In this case, an example is shown in which both stereoscopic screens are incorporated vertically. That is, by illuminating the display surface 41 with another light source on the CRT light emitting screen or the liquid crystal screen, an optical image is formed, which is used as a separate polarizing filter 43L, 43R.
To make different polarization planes, and to further project the images through the lens 44 by refracting the optical axis so that both screens are superposed on the screen surfaces by the prisms 42L and 42R. Both screens 45 can be obtained. A stereoscopic screen can be obtained by viewing this screen surface through normal polarizing glasses. That is, with this configuration, it is possible to construct a remarkably simple stereoscopic image system of the polarized glasses without taking a complicated configuration such as projection by two projectors having different polarization planes as in the prior art.

[0018]

According to the present invention, it is possible to easily view a screen such as a movie or a television, which can be viewed by a plurality of people at any position, which is not possible with the conventional eyeglass system, as a color and bright stereoscopic image. It is possible to realize a stereoscopic image system that can perform. Further, in the method of incorporating both stereoscopic screens in the upper and lower directions, a horizontally long screen can be easily configured, and a more stereoscopic effect can be obtained. Even in the case of the spectacles type that can be viewed by one person, this gives a marked three-dimensional effect compared to the conventional side-by-side configuration.
In addition, the present invention realizes a simple type stereoscopic image system with polarized glasses by combining with a projection television and the like, which makes it possible to greatly expand the application area of this system. Since the present invention has a simple structure, it is possible to easily realize a stereoscopic video even in a home TV by combining it with a home video camera, and its influence on the general public and its ripple effect. Is extremely large.

[Brief description of drawings]

FIG. 1 is an example of a first configuration of the present invention.

FIG. 2 is an example of a second configuration of the present invention.

FIG. 3 is an example of the third configuration of the present invention.

FIG. 4 is a structural example of the glasses of the embodiment of FIG.

5 is an example of a configuration in which a reflecting mirror is used for the spectacles in FIG.

FIG. 6 is another embodiment of FIG.

FIG. 7 is still another embodiment of FIG.

FIG. 8 is an example of a configuration in which eyeglasses in which a plurality of lens bears are combined are vertically arranged.

FIG. 9 is a configuration example in which a plurality of lens bears are arranged side by side.

FIG. 10 is an example of a configuration in which a plurality of lens bears are replaced and combined.

FIG. 11 is a configuration example in which a plurality of lens bears are arranged in a disc shape.

FIG. 12 is a configuration example in which disks having a plurality of lens bears are separated into right and left.

FIG. 13 is a structural example of a device for photographing both stereoscopic screens according to the first structure of the present invention.

FIG. 14 is another embodiment of the first configuration of the present invention.

15 is a structural example of the glasses of the embodiment of FIG.

16 is a structural example in which a reflecting mirror is used for the spectacles in FIG.

[Description of Reference Signs] 1a, 1b, 2a, 2b Optical axis 11 Display surface 12 Eyeglasses 12a, 12b Refractive optical system 12L, 12R Left and right optical system of eyeglasses 13a, 13b Reflector 21 Display surface 22 Eyeglass 22a Refractive optical system 30 subject 32 photographing device 33a, 33b reflecting mirror 34 camera 41 display surface 43L, 43R left and right polarization filter 44 projection lens 45 superimposed projection screens L, R left and right stereoscopic screens L1 R1, L2 R2, L3 R3 Left and right lens bears α1, α2, β Refraction angle of optical axis

Claims (6)

[Claims] 1. A display screen for displaying both stereoscopic screens vertically.
Stereoscopic image system consisting of glasses that are opposite to each other in the vertical direction and inward to each other in the horizontal direction and that have a refraction angle for viewing both screens in an overlapping manner. 2. A display screen which displays both stereoscopic images on the left and right and can be viewed at different positions, and eyeglasses for setting a refraction angle for superimposing both screens corresponding to the viewing position. , A stereoscopic image system for viewing the display screen through the glasses from an arbitrary position 3. The stereoscopic image system according to claim 1, wherein the optical system includes a reflecting mirror, and the spectacles have a function of adjusting the refraction angle by changing the angle of the reflecting mirror. 4. An optical system including a variable refraction angle prism capable of changing a refraction angle, and the spectacles having a function of adjusting the refraction angle by the prism.
3D image system 5. The stereoscopic image system according to claim 1, wherein the stereoscopic image system comprises prism glasses having a structure for switching a plurality of pairs of spectacle lenses having different refraction angles. 6. A function of projecting both upper and lower screens or left and right screens displayed on the display surface through an optical system having different polarization phases and overlapping refraction angles on the screen so as to be superimposed on the screen. A polarizing glasses type stereoscopic image system in which the projection screens are viewed as stereoscopic images through polarizing glasses having corresponding phases.