JPH0723314U - Cross eye board - Google Patents

Abstract

(57) [Summary] [Purpose] Perform naked-eye stereoscopic vision easily by the intersection method. [Structure] The cross eye board 10 is moved back and forth between the image display medium 1 provided with the first and second images 2 and 3 and the observer 4 to match the mark 12 and the cross eye point 8. The cross point 8 is a stereoscopically visible point in the intersection method, and the first and second images 2 and 3 are combined by the brain of the observer 4, and the image can be viewed as a stereoscopic image.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cross eye board used for stereoscopic viewing of a two-dimensional image.

[0002]

[Prior art]

 Observing a two-dimensional image three-dimensionally enables a more interesting observation because it provides a sense of perspective and realism compared to a plane. For such stereoscopic observation, there is a spectacle method in which two similar photographs that are lined up on the left and right are viewed with a viewer, or a two-color printed photograph created with blurring is viewed with blue and red glasses. . The principle for stereoscopic viewing of such a planar image utilizes the parallax between human eyes. In other words, since the distance between both eyes of a human being is about 6 cm to 7 cm, the retinas of the left and right eyes have images viewed from slightly different angles, and the object viewed by this It gives a three-dimensional effect and perspective. By applying this principle to stereo photography, by arranging a photograph taken from the position of the right eye and a photograph taken from the left eye, and observing two images that are slightly displaced, the two images are combined in the brain. It was designed to give a three-dimensional effect.

However, these methods have a problem that a dedicated tool such as a viewer or colored glasses is required. For this reason, an autostereoscopic method has recently been developed. This naked-eye stereoscopic vision observes the left and right images that are slightly deviated, that is, the image taken from the right eye position and the image taken from the left eye position, so that the left and right eyes naturally capture the target image from their respective positions. The same as watching. For this reason, as described above, the image information transmitted from the visual sense to the brain is illusionary in the brain for stereoscopic viewing. This stereoscopic method includes a parallel method and a cross method.The parallel method allows the left and right lines of sight to be parallel so that each eye can see different images. If you look at the image while it is still on, the image will appear to be dull, and if you continue this work, the dull images will match and a stereoscopic effect will appear in the image. On the other hand, in the crossing method, the right image is viewed with the left eye and the left image is viewed with the right eye.According to this method, the line of sight looking closer than the position where the image is placed The focus is placed at a distance, so that the image looks dull, and if you continue this work, the dull images will match as in the parallel method and a stereoscopic effect will appear.

[0004]

[Problems to be solved by the device]

 Since the distance between the eyes (7 cm or less) is limited in the parallel method described above, there is a problem that it becomes difficult to stereoscopically view an image wider than the distance between the eyes, such as a large poster or double-page spread. . In addition, according to the intersection method, the line of sight is intersected between the image and the line of sight, which has the advantage that stereoscopic viewing of large posters or double-page spreads is not very difficult. It was necessary to put a medium such as a finger or pencil between the image and the line of sight. Thus, while autostereoscopic viewing has the advantage that no special tools are required, the observers also have individual differences in their abilities, and it was necessary to train them to some extent to become accustomed to stereoscopic viewing.

The present invention has been made in consideration of the above circumstances, and in the crossing method in the naked-eye stereoscopic method, it is possible to easily get used to the naked-eye stereoscopic view, and it is possible to perform the stereoscopic view easily and quickly. The aim is to provide a good cross eye board.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the cross eye board of the present invention stereoscopically views two plane images that are slightly displaced by the crossing method. This substrate is formed between the two eyes of the observer and the image display medium with the image for the right eye on the left side and the image for the left eye on the right side. I am trying. Further, the substrate is a transparent substrate, and the marks are formed in dot-shaped dots formed at predetermined positions of the transparent substrate and in the shapes of circles, squares, etc. The feature is that there are small dots for finding cross points. Further, the substrate is an opaque substrate, the mark is a perforation of a circular shape, a square shape or the like formed at a predetermined position of the opaque substrate, and a dot for finding a cross point is provided above the perforation. It is characterized by being.

[0007]

[Action]

 The cross-eye board having the above-mentioned configuration is arranged between the image display medium and both eyes of the observer, and is used so that the observer can move forward and backward to a position where stereoscopic vision is possible while seeing the mark on the transparent substrate. . When the two-dimensional image is stereoscopically observed by this position adjustment, it is a position where the naked eye can stereoscopically view, and at this position, the image becomes three-dimensional through the transparent substrate. By repeating such use repeatedly, it is possible to easily get accustomed to naked-eye stereoscopic vision.

[0008]

【Example】

 FIG. 1 is a diagram for explaining the principle of naked-eye stereoscopic vision, in which an image display medium 1 has a first image 2 and a second image 3 arranged adjacent to each other. The first image 2 and the second image 3 are not exactly the same image, and the first image 2 and the second image 3 are slightly shifted as viewed by the right eye and the left eye, respectively. It is an image. The observer 4 simultaneously observes the first image 2 and the second image 3 with the left and right naked eyes. Then, the observed image information is transmitted to the brain of the observer 4, but even if the image of the human brain is slightly deviated, the subtle difference can be detected, and this image is analyzed. By doing so, you can feel the distance to the image and the stereoscopic effect. Therefore, the two images, which are slightly displaced, are transmitted to the brain of the observer 4 to be synthesized based on the displacement, and the observer 4 illusions that he or she is looking at a solid as indicated by reference numeral 5. . As a result, it becomes possible to stereoscopically view a two-dimensional image with the naked eye.

As described above, there are two types of parallel method and crossing method as specific means for such an autostereoscopic view. 2 shows the parallel method, in which the left eye 6 of the observer 4 observes the first image 2 of the image display medium 1 and the right eye 7 observes the second image 3. Therefore, the first image 2 is the image for the left eye 6, while the second image 3 is the image for the right eye 7, and the second image 3 is the first image. It is created so that it deviates slightly from 2. In this parallel method, the parallel images projected by the left and right eyes are combined in the brain and perceived as a stereoscopic image. In such a parallel method, since it is necessary to separate the eyeballs of the left and right eyes so that the left and right lines of sight become parallel, it is difficult to get accustomed to this and to stereoscopically view. It is not suitable for observing image media.

FIG. 3 shows the crossing method, in which the left eye 6 of the observer 4 observes the second image 3 and the right eye 7 observes the image display medium 1 so as to see the first image 2. That is, the observations of the left and right naked eyes intersect at the cross point indicated by reference numeral 8, and the first image 2 is the image for the right eye 7, while the second image 3 is the image for the left eye 6. It is an image. In this crossing method, when the eyeballs of both eyes are close to each other, that is, in the cross-eyed state, image information from both eyes is synthesized by the brain and a stereoscopic image is sensed. Such an intersection method enables stereoscopic viewing of a two-dimensional image by finding the cross point 8, and has an advantage that a large image can be easily stereoscopically viewed depending on the position of the cross point 8.

FIG. 4 shows an embodiment of the cross eye board 10 used in the crossing method. The cross eye board 10 includes a transparent substrate 11 and a mark 12 provided on the transparent substrate 11. The transparent substrate 11 has a rectangular shape, and transparent plastic such as acrylic resin or vinyl chloride resin, a soft transparent sheet, or transparent glass is used, and the first and second images viewed stereoscopically are the transparent substrate 11. It is observed through both eyes of the observer 4 through the. The mark 12 is provided in a dot shape in the substantially central portion of the transparent substrate 11. The mark 12 is provided on the transparent substrate 11 by an appropriate means such as printing, printing, or pasting. The mark 12 serves as a guide for intersecting the right and left lines of sight of the observer 4, and for this purpose, the mark 12 is provided in the shape of a dot such as a dot.

FIG. 5 shows an example of use of the cross eye board 10, which is arranged between the image display medium 1 and the observer 4. The observer 4 observes the first and second images 2 and 3 while looking at the mark 12 with both eyes 6 and 7 while holding the cross eyeboard 10 by hand. Then, the observer 4 moves the cross eyeboard 10 closer or farther. When the mark 12 coincides with the cross point 8, the first and second images 2 and 3 are combined in the brain of the observer 4 and lifted from the plane state, whereby stereoscopic vision is performed. By continuing the state that coincides with the cross point 8 for a predetermined time, it is possible to get used to the left and right eyeballs being in the cross-eyed state. Therefore, after proficiency, stereoscopic viewing by the crossing method becomes possible without the need for the cross eye board 10. Further, by using such a cross eye board 10, the cross point 8 can be easily found, stereoscopic viewing by the crossing method can be easily performed, and the degree of familiarity due to individual differences can be reduced. Can be done.

6 and 7 show another embodiment of the present invention. In FIG. 6, the mark 12 formed on the transparent substrate 11 has a circular shape with a diameter of about 4 to 5 cm, and the upper portion of the outer peripheral edge thereof. Is provided with dot-shaped small dots 13 for finding cross points. Further, in FIG. 7, each side has a square shape of about 3 cm. Also in this case, dot-like small dots 13 for finding the cross point are provided above the upper edge of the mark 12 in the same manner as described above. The image display medium is observed and stereoscopically viewed so that the line of sight is inside the marks 12. Such a circular or square mark 12 is suitable for stereoscopically observing a minute image such as a star or a geometric pattern, and the black ice board 10 in such an embodiment is excellent in stereoscopic viewing. . A circular dot-shaped mark having a diameter of about 2 to 3 cm may be provided.

Further, FIG. 8 shows another embodiment of the present invention. In FIG. 8, an opaque substrate 14 made of opaque paper, plastic sheet or the like is used as a base plate of the cross eye board 10. In this embodiment, since the material is opaque, a mark 12 'is formed as a circular perforation having a diameter of about 3 cm at approximately the center of the transparent substrate 14 as a window for observing the image display medium. Also in the example, dot-shaped small dots 13 'for finding a cross point are provided at the upper part of the outer peripheral edge. In such an embodiment, even if the board itself is the opaque substrate 14, the image display medium can be viewed stereoscopically through the perforations 12 'and the dot 13' as a guide. In the case of a transparent substrate, the second image 3 for the first image 2 for the right eye 7 and the first image 2 for the second image 3 for the left eye 6 are viewed at the beginning of observation, respectively. According to the present embodiment, the first image 2 and the second image 3 described above are hidden from the visual field of the left eye 6 and the visual field of the right eye 7, respectively, so that they are opaque. It is possible to intensively observe the image display medium within the perforations 12 ′ at the center of the substrate 14, and it is possible to increase the degree of concentration of the observer in synthesizing the stereoscopic images, and to synthesize the stereoscopic images temporally. Also has the advantage of being shortened. The shape of the mark 12 can be selected from square, rectangular, and the like other than the above-mentioned circular shape, and is not limited to the circular shape.

As described above, since the present invention is provided with the mark for intersecting the left and right eyes, the use of the mark enables the naked-eye stereoscopic viewing by the crossing method, and is conventionally used for this crossing method. It is highly suitable as a means for naked-eye stereoscopic vision, which has been used recently, because it is highly accustomed to stereoscopic visualization by the crossing method without the need for pencils, fingers, etc., which have been used as indicators of cross points. There is an advantage that can be done.

[Brief description of drawings]

FIG. 1 is a plan view illustrating the principle of autostereoscopic viewing.

FIG. 2 is a plan view illustrating autostereoscopic vision by a parallel method.

FIG. 3 is a plan view illustrating autostereoscopic vision by a crossing method.

FIG. 4 is a perspective view of a cross eye board.

FIG. 5 is a perspective view illustrating the use of a cross eye board.

FIG. 6 is a perspective view showing another example of a cross eye board.

FIG. 7 is a perspective view showing still another example of the cross eye board.

FIG. 8 is a perspective view showing still another example of the cross eye board.

[Explanation of symbols]

 1 Image Display Medium 2 First Image 3 Second Image 4 Observer 10 Cross Eye Board 11 Transparent Substrate 12 Mark 12 'Mark 13 Small Point 13' Small Point 14 Opaque Substrate

Claims (3)

[Scope of utility model registration request] 1. A two-dimensional image slightly shifted is stereoscopically viewed by a crossing method, and therefore a mark serving as a guide for intersecting the lines of sight of the right eye and the left eye is formed at a predetermined position on the substrate,
A cross-eye board characterized in that the substrate is arranged between both eyes of an observer and an image display medium in which an image for the right eye is arranged on the left side and an image for the left eye is arranged on the right side. 2. The substrate is a transparent substrate, and the mark is formed in a dot-shaped dot formed at a predetermined position of the transparent substrate and in the shape of a circle, a square, etc.
The cross eye board according to claim 1, wherein small dots for finding a cross point are provided on an upper portion of the mark such as a square. 3. The substrate is an opaque substrate, and the mark is a perforation having a circular shape, a square shape, or the like formed at a predetermined position of the opaque substrate, and a dot for finding a cross point is formed on an upper portion thereof. The cross eye board according to claim 1, wherein the cross eye board is provided.