JPS5930390A - Observing device of stereoscopic picture - Google Patents

Abstract

PURPOSE:To observe easily a stereoscopic picture with a small sized device, by arranging a prism in front of a TV camera, transmitting a pair of a video signal having a parallax in the same screen to a reproducer and transmitting an obtained left and right optical picture light beam via a prism. CONSTITUTION:A pair of an independent optical picture having a parallax for a left and a right direction are photographed in one screen, with a photographic device 3 where a prism device 2 is arranged in front of the TV camera 1. This video signal is recorded once on a VTR4 or led to the reproducer having a color TV receiving tube directly, and the signal is reproduced as optical picture 7L, 7R corresponding to the left and right part of an object on the common screen 6. Further, a prism device 8 is provided in front of the screen 6 of the device 5, and the left and right reproduced optical picture 7L, 7R are observed as the stereoscopic picture with left and right eyes 9L, 9R through the device 8 at the same time.

Description

[Detailed description of the invention] Industrial application field The present invention recognizes a moving image or a still image of a subject as a three-dimensional image,
The present invention relates to a stereoscopic image observation device that enables observation.

BACKGROUND TECHNOLOGY AND PROBLEMS Various apparatuses 1 for viewing stereoscopic images, such as stereoscopic televisions, have been considered for a long time. For example, there are methods using a two-lens stereoscopic image method, a three-dimensional reproduction image method using holography, etc.

The twin-lens type usually photographs a common subject with two left and right cameras, and projects the left and right images onto two corresponding television receivers, one for the right eye and one for the left eye, respectively.
The two optical images respectively obtained in these processes are combined using a semi-transparent mirror, and this optical image is observed through orthogonal polarizing filter glasses to be recognized and observed as a three-dimensional image. However, using two cameras and a television receiver for left and right images in this way requires synchronizing these left and right cameras and television receivers, making the configuration complex and requiring the entire device. This device was unsuitable for general household use, that is, as a popular type stereoscopic image observation device, which could avoid the increase in size and price.

OBJECTS OF THE INVENTION The present invention provides a three-dimensional image observation device that is easy to handle and can be constructed at low cost without increasing the size of the device as described above.

Summary of the Invention In the present invention, as shown in FIG.
For example, a first prism means (2) is placed in front of a television camera (1) to photograph the same subject as two pairs of independent optical images having parallax between the left and right sides within the same screen. A photographing means (3) is provided, and a video signal consisting of left and right optical images obtained by the photographing means (3) is temporarily recorded on, for example, a VTR (4), or directly transmitted to one television picture tube, such as a normal television picture tube. A reproducing means (5) K comprising a color television picture tube is introduced, and in this one reproducing means (5), on the one common screen (6), independent left and right objects are displayed. Optical images (7L
) and (7R). A second prism means (8) is provided in front of the screen of this reproduction means (5), and the reproduction means (5), for example, the picture tube screen IJ-7 (6), is connected to the reproduction means (5) through this prism means (8). )
The upper left and right reproduced optical images (7L) and (7R),
At the same time, the corresponding left and right eyes are used to observe the subject independently and separately, and in this way, the left and right eyes are made to observe an optical image with the required left and right parallax of the subject, and the observer's own brain is activated. , these images are recognized and observed as a composite three-dimensional image.

Embodiment FIG. 2 is a photographic optical diagram of the photographing means (3) shown in FIG. This common subject is separately imaged by the prism means (2) on the image receiving surface 0υ of the camera (1) as optics (11 (12L) and (12R)) having two left and right parallaxes.The prism means (3) has a pair of prism elements (2L) and (2R) arranged symmetrically, and each prism element (2L) and (2R) has the same prism apex angle θ or 100 to 15°. The left and right prism elements (
2L) and (2R) are configured to be joined at each bottom side, or are molded as a whole into an integral configuration from the beginning.

Tonoyo 5, the camera (1), that is, the photographing means (3
), the signals obtained by imaging one object as two optical images with left and right parallax are projected on the same screen (6) as two optical images (7L) and (7R) in the reproduction means (5). Then, as described in FIG. 1, these left and right optical images (7L) and (7R) are observed with the corresponding left and right naked eyes. In this case, the left optical image (7L) is viewed with the left naked eye (9L), and the right optical image (7R) is viewed with the right naked eye (9L).
Although it is possible for the observer to recognize it as a three-dimensional image even if it is directly observed with R), the prism means comprising prism elements (8L) and (8R) arranged symmetrically. (8) and these elements (8L)
By appropriately selecting the placement position and prism angle of (8R), it becomes possible to observe a stereoscopic image more naturally. That is, the left optical image (7L) is viewed through the left prism element (8L), and the right optical image (7R) is viewed through the right prism element (8R) with the naked eye (9L).
To enable each to be observed independently and with an apparent parallax suitable for composite observation in an observer's brain as a three-dimensional image.

FIG. 3 is an optical diagram showing the relationship between the two optical images (7L) and (7R) reproduced on the screen (6) of this reproduction means (5) and the naked eye (9L) and (9R). , naked eye (
Due to the apparent parallax incident on 9L) and 9R, the viewer observes it as a three-dimensional image with a sense of distance, as if one image (c) exists at a predetermined position. In this case, the left and right optics ec7L) and (7R) are observed independently by the left and right naked eyes (9L) and (9R), and other optical images (7R) and (7L) may also be seen by each other. In order to prevent this, it is desirable to install a shielding plate (2) between the screen (6) and the position of the naked eye to separate them.
9R), prism means (8), and reproduced optical image (7L)
(7R) The open positional relationship requires that a positional relationship favorable for observation as a three-dimensional image be set. For this reason, for example, as shown in FIG.
A viewing casing (2) is fixed in a predetermined positional relationship in front of the screen (6) with a fitting (a), and a prism means (8) is disposed within this casing (c). This casing (c) is formed into a cylindrical shape with a rectangular cross section, for example, and an optical shielding plate 04) is provided in the center along the axial direction of the cylindrical shape and in a vertical direction. The interior of the casing (c) is divided into left and right by a shielding plate, and each element (8L) and (8R) of the prism means (8) is placed in each of the left and right divided chambers (27L) and (27R), respectively.
can be arranged so that Then, the naked eyes (9L) and (9R) are placed in the respective chambers (17L) and (17R) at the front end of this housing Q51, respectively, and the optical images (7L) and (7R) on the screen (6) are viewed independently. I'll observe it 5
Eggplant.

The prism means (2) arranged in front of the camera (1) is
As shown in FIG. 2, each prism element (2L) and (2R) can have an isosceles triangular cross section, so that the cross section as a whole can be rhombic, or as shown in FIG. (2L) and (2R) can be made into right triangles, and the whole can be made into an isosceles triangle. Alternatively, as shown in FIG. 6, it can take various shapes, such as a dovetail-like configuration as a whole. The examples shown in FIGS. 7 to 9 are cases in which the ends of the ineffective portions of the prism elements (2L) and (2R) are cut off.

Moreover, this prism means (2) is used to form optical images (12L) and (12R) obtained on the image receiving surface (11) of the camera (1).
Alternatively, the prism elements (2L) and (2R) may be optically separated between the joint surfaces of the prism elements (2L) and (2R), as shown in FIG. A plate-like or layered light-shielding mask U is arranged. Alternatively, as shown in FIG.
2), or at least one side of the pixel element (2).
A band-shaped light-shielding mask α along the boundary between L) and (2R)
Place the rows on top of each other or face each other.

Further, this prism means (2) can be constructed of a transparent solid body such as glass, but its main light surface is formed by a glass plate, and the inside is made of a highly flexible gel-like resin, for example, a mesh structure. For example, KF1 of silicone resin
104GEL (manufactured by Shin-Etsu Chemical Co., Ltd., trade name), mannan like konnyaku, or gelatin like jelly. When such a flexible material is used, the prism means (2) can have a variable prism angle θ.

That is, as described above, in the present invention, as described above, the object OI is
Is it possible to form two left and right optical images (12L) and (12R) having parallax with each other on the image-receiving surface αυ of the camera (1)? 6) Therefore, the optical images (12L) and (12R) on the camera (1) are arranged on the image receiving surface so that the optical images (7L) and (7R) on the screen (6) are obtained at predetermined optimal positions on the screen (6). It is desired that images be formed at each predetermined position in (11). However, if the prism angle θ of the prism means (2) is, for example, a standard lens used as the lens system α of the camera (1), then the optical image (12L
) and (12R), the optimal prism angle will differ depending on close-up photography or telephoto photography. In other words, in the case of close-up photography, the optical images (12L) and (12L)
R) are too close to each other on the image receiving surface aυ, and in the case of telephoto shooting, on the contrary, they are too far apart from each other. That is, for example, in the camera (1), the prism angle 0 of the prism means (2) needs to be selected depending on the focal length of the lens system used.

Therefore, it is desirable that the prism angle θ of the prism means (2) can be variably adjusted so as to be compatible with each lens.

For example, when a zooming mechanism is applied to the lens system I of the camera (1), the prism angles of the prism elements (2L) and (2R) of the prism means (2) may be changed in response to this zooming operation. is also desired. For example, in the case of zooming in a television camera, the lens system may be moved forward or backward by a motor drive, but even in this case, the prism angle θ may be adjusted by the zooming motor, or by a motor driven synchronously with the zooming motor. It is desirable to adopt a configuration in which the prism angle θ is automatically adjusted.

In the prism means (2), the prism angle θ
In order to create a structure that can be variably adjusted, for example, the above-mentioned highly flexible transparent gel substance is used. That is, for example, as shown in FIG. 10, transparent plates (3
2rt1) (32R2) and (32L1) (32L
2), and the flexible transparent gel substance (c) described above is filled between them. In this way, the transparent plate (32R
1) (32R2), or (32L1) (32Lz)
The suppressing force is adjusted near the boundary between the prism elements (2L) and (2R) to change the thickness there and thereby change the prism angle θ. This pressing force can be adjusted manually, but as mentioned above, if it is linked to zooming, it should be automatically adjusted by the drive motor that performs the zooming operation, or by a motor synchronized with this. obtain.

Incidentally, a light-shielding mask H is provided on the prism means (2), so that the optical images (12L) and (12R), and therefore the reproduced optical image (
7L) and (7R), as shown in FIG. 1, if you want to create a separation band 67) where no optical image is projected, for example, by the above-mentioned zooming operation, the separation band 67) can be removed.
The prism angle θ is adjusted so that the width of the prism does not vary greatly.
In addition to the adjustment, it is desirable to change and adjust the substantial light shielding width due to the light shielding mask α. As a mode of this adjustment, for example, as shown in FIG. 12, a bendable mask 0th floor may be provided, and the degree of bending may be changed in accordance with the zooming operation, thereby changing the light shielding width. However, this mask control may also be based on control using static electricity or the like. Alternatively, the width of the separation strip 07) in the TenVision receiver in the reproducing means (5) can be determined electrically using a television signal.

In addition, the optical images (7L) and (7R) on the screen (6)
The observation mode is not limited to the casing (c) as described above, and may take various other modes. For example, the prism means (8
) is the glasses configuration, and observation is done as in normal glasses.
It can also be used over the eyes. In this case, the prism elements (8L) and (8R) are the prism means (2) described above.
), the prism angle can be adjusted so that it can be easily observed as a three-dimensional image.

However, as explained in FIG.
When the prism (8) is preset in a predetermined positional relationship with the prism (8), there is an advantage that the stereoscopic optical image can be easily observed at the optimum position at all times by touching the prism (8) with the naked eye.

In the above example, the case is explained in which the reproduction means (5) using a television camera and a television receiver is used, and in this case, observation of a stereoscopic optical image is possible regardless of whether the subject is a moving image or a still image. However, it is not limited to the case where such a television reception system and reproduction system is used. 5) may also be made in accordance with this or a combination thereof.

Effects of the Invention As described above, according to the present invention, a three-dimensional image can be observed using one camera and one reproducing means, so that the apparatus can be made smaller and simpler and easier to handle. Therefore, it has great benefits when applied as a stereoscopic image observation device for general home use.

[Brief explanation of the drawing]

Fig. 1 is a line configuration diagram of an example of a stereoscopic image observation device according to the present invention, Fig. 2 is a photographing optical diagram □1, Figs. 3 and 3 are reproduction optical diagrams, and Fig. 4 is an example of its observation means. The schematic perspective views, Figures 5-12, are respectively schematic cross-sectional views showing each side of the prism means according to the invention. (3) is the photographing means, (1) is the camera, (2) is the first
(5) is the reproduction means, (6) is the screen thereof, (8) is the second prism means, (9L) and (
9R) is with the naked eye.

Claims (1)

[Claims] A photographing means for photographing the same subject as a pair of independent left and right optical images using a camera having a first prism means disposed in front thereof; A reproduction means for reproducing the left and right optical images side by side on the same screen, and a second prism means are provided. A three-dimensional image observation device comprising an observation means for combining and observing a three-dimensional image.