JP6501066B2 - Display device - Google Patents

Description

  The present invention relates to the technical field of a display device for displaying an image.

  In public spaces such as roads and plazas, in train stations, event halls, stadiums and other public facilities, and in supermarkets and malls and other commercial facilities, many people at various locations can easily view the display image It is preferable to have a look. For example, Patent Document 1 includes a lenticular lens having a cylindrical shape centering on a light source and transmission light control means, and the transmission light control means is reduced in the horizontal direction with respect to each lens constituting the lenticular lens. Disclosed is a display that has formed a transmission image.

JP 2001-272934 A

  However, in the prior art as in Patent Document 1, since each lens of the lenticular lens is a single convex structure having a flat surface, when the viewing angle becomes equal to or more than a predetermined value, the flat surface of the lens There is a problem that a sufficient viewing angle could not be secured because light reflection (internal reflection) occurs. Furthermore, in Patent Document 1, in order to reduce the influence of external light from the surroundings, light shielding means such as slits formed in a grid shape on a black thin plate are provided, but the image becomes dark due to the light shielding means. There is a problem that the image at the end of the cylindrical shape is not visible and the visibility is reduced.

  Then, an example of the subject of this invention aims at providing the display apparatus etc. which improved visibility.

In order to solve the above problems, the invention according to claim 1 has a circular cross-section having a circular shape with a substantially constant curvature , and refracting means for refracting light, and a plurality of the refracting means as a viewpoint arranged in a convex shape and support to the side, and arranged support means ing from thermoplastic material, in the viewpoint side opposite to said refracting means, an image to cover in contact with half of the refractor means Forming the image forming means, the disposing and supporting means supporting each of the refracting means so that the center of the image is directed in the normal direction of the convex shape, and the image forming means includes It is characterized in that the adjacent or same refracting means forms the same or similar image.

  The invention according to claim 2 is characterized in that, in the display device according to claim 1, the shape of the refracting means is spherical or cylindrical.

  The invention according to claim 3 is characterized in that, in the display device according to claim 1 or claim 2, the convex shape is a circular shape.

  A fourth aspect of the present invention is the display device according to the third aspect, wherein the shape of the refracting means is spherical, and the disposition support means has at least one of a spherical shape and a cylindrical surface shape for each of the refracting means. It arranges in the shape of.

  The invention according to a fifth aspect is characterized in that, in the display device according to the third aspect, the shape of the refraction means is a cylindrical shape, and the arrangement support means arranges each of the refraction means in a cylindrical surface shape. I assume.

  The invention according to a sixth aspect is characterized in that, in any one of the first to fifth aspects, the image is a still image.

  The invention according to claim 7 is characterized in that, in any one of claims 1 to 5, the image is a moving image.

  According to the present invention, since the refracting means has a circular cross section, it is possible to prevent the deterioration of the visibility due to the reflection of the external light from the periphery of the display device inside the refracting means, and shield the external light The need for a means is eliminated, the image displayed by the display device is brightened, and the visibility is improved.

  It is a schematic diagram which shows the outline | summary structural example of the display apparatus which concerns on one Embodiment.   It is a schematic diagram which shows an example of the refraction | bending means of FIG.   It is a schematic diagram which shows an example which arrange | positioned the refraction | bending means of FIG. 1 in three dimensions.   It is a schematic diagram which shows an example which arrange | positioned the refraction | bending means of FIG. 1 in three dimensions.   It is a schematic diagram which shows the modification of the shape of a refraction | bending means.   It is a schematic diagram which shows the modification of the shape of a refraction | bending means.   It is a schematic diagram which shows the modification of the shape of a refraction | bending means.   It is a schematic diagram which shows the modification of the shape of a refraction | bending means.   It is a schematic diagram which shows an example of arrangement | positioning of a refraction | bending means.   It is a schematic diagram which shows an example of arrangement | positioning of a refraction | bending means.   It is a schematic diagram which shows an example of arrangement | positioning of a refraction | bending means.   It is a schematic diagram which shows an example of arrangement | positioning of a refraction | bending means.   It is a schematic diagram which shows an example of arrangement | positioning of a refraction | bending means.   It is a schematic diagram which shows an example of arrangement | positioning of a refraction | bending means.   It is a schematic diagram which shows an example of arrangement | positioning of a refraction | bending means.   It is a schematic diagram which shows an example of arrangement | positioning of a refraction | bending means.   It is a schematic diagram which shows an example of arrangement | positioning of a refraction | bending means.   It is a schematic diagram which shows an example of an image formation means.   It is a schematic diagram which shows the 1st modification of an image formation means.   It is a schematic diagram which shows the 2nd modification of an image formation means.   It is a schematic diagram which shows an example of the modification of an image.   It is a schematic diagram which shows an example of the optical path in a refraction | bending means.   It is a schematic diagram which shows an example of reflection in the lens which has a structure of a single convex.   It is a schematic diagram which shows an example of reflection in the lens which has a structure of a single convex.   It is a schematic diagram which shows an example of the relationship between a viewpoint and the image of each refraction | bending means.   It is a schematic diagram which shows an example of the relationship between parallax and an image.   It is a schematic diagram which shows an example of arrangement | positioning of the ball lens in the display apparatus of 1st Example.   It is a schematic diagram which shows an example of the display in the display apparatus of 1st Example.   It is a schematic diagram which shows an example of the display in the display apparatus of 1st Example.   It is a schematic diagram which shows the modification of the display apparatus of 1st Example.   It is a schematic diagram which shows an example of arrangement | positioning of the cylindrical lens in the display apparatus of 2nd Example.   It is a schematic diagram which shows an example of the image formation means in the display apparatus of 2nd Example.

A mode for carrying out the present application will be described with reference to the drawings.
[1. Display Configuration and Function]

(1.1 Overview of Display Configuration and Function)
First, the outline of the configuration of the display device will be described with reference to FIGS. 1 to 3B.

  FIG. 1 is a schematic view showing a schematic configuration example of a display device according to an embodiment. FIG. 2 is a schematic view showing an example of the refraction means. FIG. 3A and FIG. 3B are schematic views showing an example in which the refracting means is three-dimensionally arranged.

  As shown in FIG. 1, the display device 1 is identical or similar in a plurality of refracting means 1a for refracting light, an arrangement supporting means 1b for supporting and arranging each refracting means 1a, and each adjacent refracting means 1a. And image forming means 1c for forming an image of

  The refraction means 1a has a circular cross section. As an example of the refraction means 1a, for example, as shown in FIG. 2, a spherical ball lens 10 may be mentioned. Furthermore, as an example of the refraction means 1a, a cylindrical, ellipsoidal, conical, etc. lens having a circular cross section can be mentioned. The circular shape is a circle having a substantially constant curvature.

  The arrangement | positioning support means 1b arranges each refraction | bending means 1a in convex shape with respect to the viewpoint 3 side, as shown in FIG. Three-dimensionally, for example, as shown in FIG. 3A, each ball lens 10 (an example of the refraction means 1a) is disposed on a curved surface of a spherical shape. As shown in FIG. 3B, in the case where the refraction means 1a is a cylindrical lens 11, the cylindrical lenses 11 in the same direction are arranged on a cylindrical curved surface.

  Here, as an example of the convex shape of the arrangement support means 1b, there may be mentioned a spherical shape having a substantially constant curvature, and a cylindrical surface shape having a circular cross section in a plane perpendicular to the axis of the cylinder. The spherical shape is a curved surface that forms a part of a spherical surface, such as a full spherical surface or a hemispherical surface, and is a curved surface having a substantially constant curvature. In addition, the cylindrical surface shape is a curved surface that forms a part of a cylindrical surface such as a full cylinder, a semi-cylinder, or a 1⁄4 cylinder, and a cross-sectional shape by a plane perpendicular to the axial direction of the cylinder has a substantially constant curvature. It is. In addition, the shape etc. of the curved surface whose curvature is not necessarily constant may be sufficient.

  As shown in FIG. 3B, in the case of the viewpoint 3 (when the direction of the viewpoint 3 is parallel to the bottom surface of the cylindrical lens 11), the shape of the cross section of the cylindrical lens 11 is circular, and the cross section of the cylindrical lens 11 is The shape is the same.

  FIG. 1 is also a cross-sectional view in which each of the three-dimensionally arranged refracting means 1a as shown in FIGS. 3A and 3B is described in a cross-section from a certain viewpoint 3. Further, FIG. 1 is also a cross-sectional view in which the ball lens 10 disposed on a curved surface of a cylindrical surface shape, which is an example of each of the three-dimensionally arranged refracting means 1a, is shown in a cross section.

  As shown in FIG. 1, the image forming unit 1c is installed on the side opposite to the side of the viewpoint 3 with respect to the refraction unit 1a. For example, as shown in FIG. 2, the image forming unit 1 c forms an image 5 on the side opposite to the viewpoint 3 with respect to the refraction unit 1 a such as the ball lens 10.

  As shown in FIG. 1, the image forming unit 1c is installed so that the center of the image 5 is directed in the normal direction of the convex shape formed by the arrangement support unit 1b. That is, each refracting means 1a is supported by the arrangement support means 1b such that the central portion (portion to be the center of the image) of the image forming means 1c is directed in the normal direction of the convex shape. The line connecting the central portion of the image forming means 1c and the central portion of the refracting means 1a is perpendicular to the convex surface of the arrangement and support means 1b.

  The light of the image 5 formed on the surface of the refracting means 1 a opposite to the viewpoint 3 side passes through the inside of the refracting means 1 a and is refracted when reaching the outside from the refracting means 1 a and reaches the viewpoint 3. The image 5 is magnified by the refraction means 1a.

  Further, each image forming means 1c forms the same or similar image 5 in each adjacent refracting means 1a. Here, in the refracting means 1a disposed on the convex curved surface, as an example of the adjacent refracting means 1a, another refracting means 1a or 2 closest to each other in each direction centering on the refracting means 1a, 2 There are other refracting means 1a closest to the third. In the images of all the refracting means 1a adjacent to the refracting means 1a, all the images may not be the same or similar.

(1.2 Configuration and Function of Refractor)
Next, the configuration and function of the refraction means 1a will be described in detail.

  The refractor 1a is a lens made of a material that refracts and transmits light such as glass and plastic. The color of the refraction means 1a is not limited to transparent, and may be colored glass or the like as long as it can transmit light.

  At least a part of the cross section of the refraction means 1a is circular. The three-dimensional shape of the refraction means 1a is a sphere, a cylinder, an ellipsoid, a cone or the like. For example, a ball lens, a cylindrical lens, etc. are mentioned as an example of the refraction | bending means 1a. Furthermore, the three-dimensional shape of the refraction means 1a may be a shape in which a cylinder is expanded like a barrel, or a shape in which a cylinder is constricted like a drum, or a shape in which the apex side of a conical shape is scraped.

  Here, the circular shape which is the shape of the cross section of the refraction means 1a is not limited to a perfect circle, but may be slightly distorted. For example, even if the shape of the image displayed by the display device 1 as viewed from the viewpoint 3 can be recognized as an image in the case of a perfect circle as the display device 1 as a whole, it is deformed or distorted from the perfect circle Good.

  Furthermore, as shown in FIG. 4A to FIG. 4D, the circular shape of the cross section of the refraction means 1a is reflected (internal reflection) inside the refraction means to the appearance of the image displayed by the display device 1 when viewed from the viewpoint 3 The structure may be a biconvex structure such as a somewhat elliptical shape to the extent that the influence of is not a concern. For example, as shown in FIG. 4A, the refraction means 1a may be an ellipsoid, the axis of the ellipsoid may be directed to the viewpoint 3, and the circular shape of the cross section of the refraction means 1a may be somewhat elliptical. Further, as shown in FIG. 4B, the refraction means 1a may be a lens having a shape in which a thin disk is sandwiched by two hemispheres, and the circular shape of the cross section of the refraction means 1a may be a shape in which a rectangle is sandwiched by semicircles. As shown in the drawing, a part of the ball lens may be cut, and the circular shape of the cross section of the refraction means 1a may be a shape in which a part of the circle is cut. As shown in FIG. 4D, the curvature may be somewhat different between the curved surface of the refractive means 1a on the front side and the curved surface of the refractive means 1a on the depth side with respect to the viewpoint 3 side.

  Here, examples of the viewpoint 3 include human eyes, a camera, eyes of a robot, and the like. Further, the distance between the display device 1 and the viewpoint 3 is various, and may be viewed by bringing the display device 1 closer or further away. The direction of the viewpoint 3 is also various, as long as the refractor 1a can be seen.

(1.3 Configuration and function of arrangement support means)
Next, the configuration and function of the placement support means 1b will be described in detail with reference to FIGS. 5A to 8B.

  The arrangement and support means 1 b is made of a material that can define the arrangement by connecting the refraction means 1 a such as a ball lens of resin, clay or the like.

  The refracting means 1a flexibly connected by an adhesive may be placed on a support base having a convex surface. In this case, the arrangement support means 1 b is an adhesive and a support. In addition, the arrangement support means 1b may be supported by embedding the refraction means 1a attached with the image forming means 1c in a plastic material by half.

  Next, an arrangement example of the refraction means 1a will be described.

  The arrangement support means 1b arranges the plurality of refraction means 1a in a convex shape with respect to the viewpoint 3 side. For example, as shown in FIG. 5A, the refraction means 1a may be arranged in a circular shape s1. In this case, the three-dimensional arrangement of each of the refracting means 1a is spherical, hemispherical, cylindrical, ellipsoid or the like. In the case of a hemispherical shape, a cylindrical shape, and an ellipsoid, the arrangement of the circular shape s1 is achieved at a certain cut surface.

  As shown in FIG. 5A, the direction of the image forming unit 1c is perpendicular to the arrangement shape (circular shape s1) of the refraction unit 1a. That is, each refracting means 1a is disposed such that the portion (the central portion of the image forming means 1c) which is the center of the image is directed in the normal direction of the convex shape.

  Also, as shown in FIG. 5B, the refraction means 1a may be arranged in an elliptical shape s2. In this case, the three-dimensional arrangement of the respective refraction means 1a is, for example, an elliptic cylinder, an ellipsoid or the like. In the case of a cross section having an elliptic cylindrical shape and an ellipsoid, the arrangement of the oval shape s2 is obtained. The orientation of the image forming means 1c is perpendicular to the arrangement shape (elliptical shape s2) of the refraction means 1a, as shown in FIG. 5B. That is, each refracting means 1a is disposed such that the portion (the central portion of the image forming means 1c) which is the center of the image is directed in the normal direction of the convex shape.

  Further, as shown in FIG. 6A, the convex shape is not limited to the shape passing through the center of each refracting means 1a, and may be set to a shape s3 inscribed in or circumscribed to each refracting means 1a. The orientation of the image forming means 1c is perpendicular to the inscribed or circumscribed shape s3, as shown in FIG. 6A.

  Also, the convex shape (shape s3) may not be a closed shape as shown in FIGS. 5A and 5B, but may be an open shape as shown in FIG. 6A. That is, the convex shape may not be a closed circular shape, a closed convex shape such as a closed elliptical shape, or a partial shape of these.

  Further, as shown in FIG. 6B, the convex shape may be a polygon s4 in which the vicinity of the center of each of the refraction means 1a is connected by a straight line. That is, the three-dimensional arrangement of the respective refracting means 1a may be a convex polyhedron whose apex is near the center of each refracting means 1a.

  The orientation of the image forming means 1c is, as shown in FIG. 6B, perpendicular to one surface in contact with the polygon at the vertex of the polygon.

  Moreover, as shown to FIG. 6B, each refraction | bending means 1a does not need to be arrange | positioned at equal intervals.

  Also, as shown in FIG. 7A, even if a small refractive means 1a (for example, a ball lens with a small diameter) is arranged in the same convex shape s5 by the arrangement support means 1b, as shown in FIG. 7B, the large refractive means 1a (For example, a ball lens with a large diameter) may be arranged. As shown to FIG. 7A, in the case of the small refraction | bending means 1a, the resolution of the image displayed by the display apparatus 1 becomes high.

  Further, the size of the convex shape on which the refraction means 1 a is arranged by the arrangement support means 1 b depends on the size of the display device 1. For example, as shown in FIG. 7C, when the size of the display device 1 decreases, the curvature of the convex shape s6 increases. FIG. 7C shows an example in which the radius of the arrangement support means 1b is small, using individual refracting means 1a of the same size as FIG. 7A. In this case, the image displayed on the display device 1 shown in FIG. 7C is the same as the image shown in FIG. 7A, although the size of the displayed image is smaller according to the size of the display device 1b.

  Further, as shown in FIG. 8A, not all the refracting means 1a may be disposed on the line of the convex shape s7 formed by the disposition supporting means 1b. For example, part of the refracting means 1a is disposed on the viewpoint 3 side (outside of the display device 1) from the convex shape s7 on the design of the display device 1, or on the inner side opposite to the viewpoint 3 side (Inside) may be installed.

  In these cases, in the image of the display device 1, the portion of the image which such a part of the refracting means 1 a is in charge of may not have the shape of the design planned before the creation. In this case, in the entire image displayed by the display device 1, the part of the image that the part of the image forming unit 1c takes charge of is an image that is shifted.

  Further, as shown in FIG. 8A, the orientations of all the image forming means 1 c may not be exactly perpendicular to the design convex shape s 7 of the display device 1. The part of the image which such a part of the image forming means 1c takes charge of may not be in the direction of the design planned before the creation. In this case, in the entire image displayed by the display device 1, the part of the image that the part of the image forming unit 1c takes charge of is an image that is shifted.

  Note that the direction of the image forming means 1c does not have to be exactly perpendicular to the design of the convex shape s7 on the design of the display device 1 so that the portion serving as the center of the image points in the normal direction of the convex shape. The orientation of the image forming means 1c may be deviated from the vertical to such an extent that the display 1 can be recognized as an image when the orientation of each image forming means 1c is exactly vertical.

  Moreover, as shown to FIG. 8B, the magnitude | sizes of the refraction | bending means 1a may each differ. For example, the sizes of the respective refraction means 1a may be different from each other to such an extent that the entire display device 1 can be recognized as an image in the case where the sizes of the respective refraction means 1a are the same. The cross-sectional area of part of the refractor 1a may be reduced depending on the cross section of the display 1 in which the ball lenses 10 are three-dimensionally arranged as shown in FIG. 3A.

  Also, the refractive indices of the refraction means 1a may be different from each other. For example, the refractive indices of the respective refracting means 1a may be different from each other to such an extent that they can be recognized as an image in the case where the refractive indices of the respective refracting means 1a are the same.

  When each refracting means 1a is disposed so that the portion serving as the center of the image points in the normal direction of the convex shape, the shape of each refracting means 1a is the same as that of each refracting means 1a from the viewpoint 3 become. That is, in particular, in the case where the refractor 1a is a solid having directivity such as a cylindrical shape, an ellipsoid, a cone, etc., the respective refractors 1a are arranged such that the directions of the respective refractors 1a are substantially aligned. . The cross-sectional shapes of the respective refraction means 1a do not have to be exactly the same, as long as the image 5 can be recognized in the entire display device 1 by viewing the images 5 from the viewpoint 3.

  In addition, the convex shape on which the refraction means 1a is arranged by the arrangement support means 1b may be a shape in which a spherical shape and a cylindrical surface shape are connected. For example, the entire shape of the display device 1 may be a shape in which two hemispherical surfaces are connected so as to sandwich a cylindrical surface. As described above, the three-dimensional arrangement of the respective refraction means 1a may be a combination of a spherical surface, a hemispherical surface, a cylindrical surface, an ellipsoidal surface and the like.

  The entire shape of the display device 1 may be a combination of a plurality of convex shapes. In this case, the joint portion between the convex shape and the convex shape may not necessarily be convex. For example, like four leaves, convex shape may be formed in four directions.

  Further, with regard to the arrangement of the refraction means 1a, the spherical shape may be a shape similar to a spherical surface as long as it has a convex shape. With regard to the arrangement of the refracting means 1a, the cylindrical surface shape is such that the cylindrical surface bulges like a barrel, the cylindrical surface narrows like a drum, or the apex of the conical surface is scraped off. The shape may be similar to a cylindrical surface.

(1.4 Configuration and Function of Image Forming Means)
Next, the configuration and function of the image forming unit 1 c will be described in detail with reference to FIGS. 9A to 10.

  As shown in FIG. 9A, the image forming unit 1c is installed so as to cover a half surface of the refraction unit 1a made of a transparent material. 9A is a schematic view showing a cross section when the transparent ball lens 10 is covered with the hemispherical display 20. FIG. In addition, the cross section in the case where the cylindrical lens is covered with the image forming means having a semi-cylindrical surface shape may be used.

  The line connecting the center of the hemispherical display 20 and the center of the ball lens 10 is perpendicular to the convex surface of the arrangement support means 1b. Further, in the case of a cylindrical lens, a line vertically connecting the center line of the cylindrical lens and the center line of the semicylindrical image forming means 1c is perpendicular to the convex face of the arrangement support means 1b. .

  The image forming means 1c forms an image with ink or the like when drawing an image directly on the refracting means 1a. In the case of affixing to the refracting means 1a, the image forming means 1c forms an image by a film made of resin, paper, metal or the like. The image forming unit 1c may be configured of a transmissive film on which an image is printed and a backlight.

  For example, as shown in FIG. 9B, an image 5 is formed on the surface of the ball lens 10 with ink or a film. When the image 5 formed on the surface of the ball lens 10 is viewed from the side on which the image 5 is formed, the image 5 is a mirror image.

  In addition, the central portion of the image is not necessarily the center of the image "E" itself, and the convex formed by the arrangement support means 1b after the ball lenses 10 are fixed by the arrangement support means 1b. The position where the normal of the shaped surface passes through the center of the ball lens 10 and intersects the surface with the ball lens 10 on the opposite side to the viewpoint 3 is the center of the image.

  When a still image or a moving image is displayed, the image forming unit 1 c is a display or the like that displays an image of liquid crystal, organic EL, or the like.

  When the refraction means 1a is embedded in the placement support means 1b, an image may be drawn or pasted on the embedded portion.

  As shown in FIG. 9C, the image forming unit 1c may be a plate-shaped display 21. The light from the display 21 is incident on the refraction means 1a. Further, the orientation of the central portion of the display 21 is perpendicular to the convex surface formed by the arrangement support means 1 b. In addition, the display 21 may not be in contact with the refraction means 1 a.

  In addition, since the image of the display 21 is distorted as it leaves | separates from center part, the display 21 displays the image distorted reversely beforehand.

  Here, the same or similar images in adjacent refracting means 1a may have slightly different images, and when viewed from viewpoint 3, the entire image of each refracting means 1a is the image of display device 1 It should be recognized.

  Furthermore, as shown in FIG. 10, as an example of the image which is the same or similar in each adjacent refracting means, for example, an image of an intermediate shape between the letter "E" and the letter "B" is also used. By inserting an intermediate image refracting means between the refracting means of the image of E "and the refracting means of the image of the letter" B ", an image identical or similar to each adjacent refracting means is obtained. It is also good.

  In addition, display devices displaying different images may be connected such that the respective refraction means 1a have a convex shape with respect to the viewpoint side. For example, a hemispherical display device for displaying an image of "A" and a hemispherical display device for displaying an image of "B" are connected in a spherical shape. Depending on the viewpoint, an intermediate image in which half is the letter “A” and half is the letter “B” will be viewed.

  A temporally similar image may be an example of the same or similar image in each of the adjacent refracting means. For example, in the case where the image is a moving image, adjacent refracting means 1a may be images that are temporally shifted in the moving image. That is, in a series of frames of a moving image, images having similar frame numbers are displayed on adjacent refracting means.

  Note that different images that are not similar to each other like a checkered pattern may be alternately set for each of the refraction means 1a. Thus, it is not necessary for all the images in all the refractive means 1a adjacent to the refractive means 1a to be identical or similar. It is sufficient if the display device 1 as a whole can be recognized as an image of some sort. For example, when the refraction means 1a of the image of the letter "A" and the refraction means 1a of the image of the letter "B" are alternately arranged in a checkered pattern on the curved surface, the letter "A" as the whole display device 1 It looks like a letter where the letter "B" overlaps.

[2. Operation of Display Device]
Next, the operation of the display device will be described using the drawings.

(2.1 Optical path of refraction means)
First, the optical path of the refracting means will be described using FIGS. 11, 12A and 12B.

  FIG. 11 is a schematic view showing an example of an optical path in the refraction means. 12A and 12B are schematic views showing an example of reflection in a lens having a single convex structure.

  Here, as shown in FIG. 11, it is assumed that the size of the refraction means 1a is sufficiently smaller than the distance from the viewpoint 3 to the refraction means 1a. In this case, the distance from the viewpoint 3 to the refracting means 1a can be regarded as infinity (if the refracting means 1a is not small compared to the distance between the refracting means 1a and the viewpoint 3, a parallel optical path as shown in FIG. Although the effect is the same, the optical path will be described with reference to FIG.

  The optical path (width 2r) in the refracting means 1a having a radius r in cross section reaches a part (length a) of the arc of the refracting means 1a on the opposite side to the viewpoint 3 side when the parallel optical path is refracted by the refracting means 1a , Out of the refracting means 1a. In addition, since the cross-sectional shape of the refraction | bending means 1a is circular shape, even if it shifts the visual direction of the viewpoint 3, it will become a similar optical path.

  On the other hand, as shown in FIGS. 12A and 12B, in the case where the sectional shape of the refracting means is semicircular, reflection (internal reflection) inside the refracting means occurs when the angle θd of the viewpoint 3 increases with respect to the normal direction. It comes to occur. That is, in the case of a lens of a single convex structure, ambient light is visible from the viewpoint 3.

  However, as shown in FIG. 11, when the cross-sectional shape of the refraction means 1a is circular, there is no reflection of light incident on the refraction means 1a inside the refraction means 1a.

  In addition, since the arc of the length a is expanded to the width 2r, the enlargement ratio of the refraction means 1a can be approximately 2r / a.

(2.2 How the image looks from the viewpoint)
Next, how the image is viewed from each viewpoint will be described with reference to FIGS. 13 and 14. FIG. 13 is a schematic view showing an example of the relationship between the viewpoint and the image of each refraction means. FIG. 14 is a schematic view showing an example of the relationship between parallax and an image.

  As shown in FIG. 13, it is assumed that the refraction means 10a, 10b, 10c and 10d are arranged in a circle s10 (an example of a convex shape) having a radius R of the center C by the arrangement support means 1b. The distance between the center c of the refraction means 10a, 10b, 10c, 10d and the center C of the arrangement is R.

の部分画像５ｂであるとする。

Is a partial image 5b of

屈折手段の配置の中心Ｃとを結ぶ線上にある。画像の中心とする部分であるダイヤ”

（凸形状の一例）の法線方向である。すなわち、画像の中心とする部分であるダイヤ”

It is on a line connecting the center C of the arrangement of the refracting means. Diamond that is the central part of the image

It is a normal direction of (an example of a convex shape). In other words, the diamond that is the part to be the center of the image

When viewing the display device 1 from the viewpoint 3a, the refracting means 10a is a partial image 5 of a dagger “†”.

に見える。From the viewpoint 3a, the partial image 5a of the dagger "†" looks like an enlarged partial image 6a from the viewpoint 3a due to the enlargement function of each of the refraction means 10a, 10b and 10c.

It looks like

示することができる。Thus, a partial image 6a refractive means 10a, a partial image 6 b refracting means 10b, refracting means

Can be shown.

On the other hand, when viewing the display device 1 from the viewpoint 3b, the refracting means 10b is a portion of the dagger “” ”.

見える。Due to the magnifying function of each of the refractors 10b, 10c, and 10d, the partial image 5a of the dagger "拡 大" looks like a magnified partial image 7a from the viewpoint 3b to the refractor 10b,

appear.

Therefore, the display device 1 is obtained by combining the enlarged partial image 7a of the refraction means 10b, the enlarged partial image 6b of the refraction means 10c, and the enlarged partial image 7c of the refraction means 10d.

As described above, each of the refracting means is enlarged similarly from the viewpoint 3a and the viewpoint 3b.

Further, as shown in FIG. 14, when viewing the display as shown in FIG. 13 with both eyes (viewpoint 3c and viewpoint 3d), a line connecting the viewpoints 3c, 3d and the center C of the arrangement of each refracting means for each eye And each partial image 5b of diamond "◆" in each refracting means near the intersection of the circle s10 is visible. Therefore, due to the parallax, the partial image 5b of diamond "◆" appears as if the magnified partial image 6b is displayed in the vicinity of the center C of the arrangement of the refraction means, which is the intersection of the lines of sight of both eyes.

て、回転しながら、視点に対して正面を向いているように見える。Also, in the example of FIG. 13, when looking at the display device 1 while moving from 3a to 3b, a composite image "

Appear to be facing the front with respect to the viewpoint while rotating.

  As described above, according to the display device 1 according to the embodiment, since the refraction means 1a has a circular cross section, reflection (internal reflection) of external light from the periphery of the display device 1 inside the refraction means 1a This makes it possible to prevent the deterioration of the visibility due to the need for light shielding means such as slits for blocking external light, the image displayed by the display device 1 is brightened, and the visibility is improved.

  By thus improving the visibility, it is possible to secure a wide display range with high visibility with respect to the display device 1 and to enhance the practicability of the display device 1.

  Further, since the viewing angle of each of the refracting means 1a is expanded, a large image can be displayed on the entire display surface of the display device 1 viewed from the viewpoint 3 side. On the other hand, in the prior art, since the viewing angle of each refracting means was narrow due to internal reflection, it was not possible to display a large image projected on the entire display surface of the display viewed from the viewpoint 3 side.

  The refracting means is arranged in a convex shape with respect to the viewpoint side, the same or similar image is formed in each adjacent refracting means 1a, and the refracting means 1a is oriented so that the central portion of the image is directed in the normal direction of the convex shape. Being supported, the same or similar images can be displayed even if the viewing angle is changed.

  In addition, when the display device 1 is viewed with both eyes, since the refraction means 1 a is arranged in a convex shape with respect to the viewpoint 3 side, the composite image appears to be present in the display device 1 due to the parallax.

  In addition, when the shape of the refraction means 1a is spherical or cylindrical, internal reflection of the refraction means 1a can be substantially eliminated with respect to external light from the periphery of the display device 1. Also, in this case, the viewing angle of each of the refraction means 1a is broadened.

  When the shape of the refraction means 1a is spherical as in the ball lens 10, the degree of freedom in arrangement is improved by disposing the spherical refraction means 1a on a spherical surface or in the plane of an ellipsoid.

  Moreover, when convex shape is circular shape, distortion of the synthesized image which the display apparatus 1 displays decreases. Also, even if the angle at which the user looks is changed, an image with less distortion can be seen.

  When the shape of the refraction means 1a is a spherical shape such as a ball lens 10 and the arrangement support means 1b arranges each refraction means 1a in a spherical shape, not only the movement of the planar viewpoint 3 but also the three-dimensional direction The display device 1 can display an image similar to the movement of the viewpoint 3. When the shape of the refraction means 1a is a spherical shape such as a ball lens 10 and the arrangement support means 1b arranges the refraction means 1a in a cylindrical shape, the display device 1 can be installed on a building pillar or the like.

  When the shape of the refraction means 1a is cylindrical like a cylindrical lens and the arrangement support means 1b arranges each refraction means 1a in a cylindrical surface shape, the display device 1 can be installed on a building pillar or the like.

  In addition, when the image forming unit 1 c is a display or the like that displays a still image, when viewed with both eyes, the still image appears to be present in the display device 1.

  In addition, when the image forming unit 1 c is a display or the like that displays a moving image, the moving image appears to be displayed in the display device 1 when viewed with both eyes.

  Next, specific examples corresponding to the above-described embodiment will be described using the drawings.

(First embodiment)
An embodiment in which the refraction means 1a is the ball lens 10 will be described with reference to FIGS. 15, 16A and 16B.

  As shown in FIG. 15, the display device 1A is an embodiment in which a plurality of ball lenses 10 are arranged on a spherical surface.

  Although the hemispherical image forming means is not shown, as shown in FIG. 9B, the characters “E” are printed or drawn as an image on each ball lens 10. The central portion of the image faces the center of the spherical surface of the display device 1A. That is, the direction from the central portion of the image toward the center of the ball lens 10 is the normal direction of the spherical surface.

  In addition, each ball lens 10 is embedded about half in a plastic material such as clay.

  As shown in FIG. 16A, an image "E" synthesized from a partial image of each ball lens 10 responsible for each portion of the image "E" is displayed on the display device 1A.

  When viewed with both eyes, the image "E" appears to be present in the display device 1A.

  As shown in FIG. 16B, the image “E” looks the same even when viewed from the viewpoint. Note that, as shown in FIG. 16B, the ball lens 10 that is responsible for each portion of the image “E” is different from the case shown in FIG. 16A.

  In addition, the sheet | seat of the shape of the components which carried out planar deployment of the globe may be affixed on a spherical-shaped object, and 1 A of display apparatuses may be created. In this sheet, a ball lens 10 in which the same or similar image is printed in the same direction is embedded.

  In addition, the shape of the display device may be a hemispherical surface or the like.

  Further, as shown in FIG. 17, the display device may have a cylindrical surface display device 1B. In this case, the ball lens 10 is disposed in a cylindrical surface shape. The same image can be seen with the eyes of tall people and the eyes of short people.

  The plastic sheet in which the ball lens 10 in which the same or similar images are printed in the same direction is embedded may be wound around a pillar or the like to create the display device 1B. Further, the display device 1B may have a semi-cylindrical shape or a partial shape thereof instead of the perfect cylindrical shape.

Second Embodiment
Next, an embodiment in which cylindrical lenses are arranged in a cylindrical surface shape will be described with reference to FIGS. 18, 19 and 20. FIG.

  As shown in FIG. 18, the display device 1 </ b> C may arrange cylindrical lenses 11 in the same direction in a cylindrical shape. Each cylindrical lens 11 forms a cylindrical surface s11 (1b). As shown in FIG. 19, the display 22 (an example of the image formation means 1c) of semi-cylindrical surface shape is installed in each cylindrical lens 11 of 1 C of display apparatuses. The portion of the axial center line of the cylindrical lens 11 is the portion that is the center of the image (the central portion of the display 22). The display 22 may be an image printed on the cylindrical lens 11.

  As shown in FIG. 19, the orientation of the display 22 is the normal direction of the cylindrical surface s11 (1b) of the display device 1B. That is, the central portion of the display 22 is on the line connecting the center c of the cylindrical lens 11 and the center C of the cylindrical surface s11.

  Here, the arrangement support means 1b arranges the respective refraction means 1a such that the sectional shapes of the respective refraction means 1a from the viewpoint become the same shape.

  In addition, the cylindrical lens 11 in which the same or similar images are printed in the same direction may be wound around a column or the like so as to form the display device 1C. Further, the display device 1C may have a semi-cylindrical shape or a partial shape thereof, instead of the perfect cylindrical shape.

  Furthermore, the present invention is not limited to the above embodiments. Each of the above-described embodiments is an exemplification and has substantially the same configuration as the technical idea described in the claims of the present invention, and any one having the same function and effect can be obtained. It is included in the technical scope of the present invention.

1, 1A, 1B, 1C: display device 1a: refracting means 1b: arrangement supporting means 1c: image forming means 3, 3a, 3b, 3c, 3d: viewpoint 5: image 10: ball lens (refractive means)
11: Cylindrical lens (refractive means)
20, 21, 22: Display (image forming means)
s1: Circular shape (convex shape)
s2: Elliptical shape (convex shape)
s3: shape s4: polygonal shape (convex shape)
s5, s6, s7: convex shape s10: circular (convex shape)
s11: Cylindrical surface s11 (convex shape)

Claims (7)

Refracting means for refracting light, which has a circular cross section having a circular shape with a substantially constant curvature ;
A plurality of said refractive means, and arranged in a convex shape and support to the viewpoint side, and arranged support means ing from plastic material,
An image forming means for forming an image so as to contact and cover a half face of the refracting means on the side opposite to the viewpoint side with respect to the refracting means;
Equipped with
The arrangement support means supports each of the refracting means such that the central portion of the image is directed in the normal direction of the convex shape;
A display apparatus characterized in that the image forming means forms the same or similar images in adjacent ones of the refracting means. In the display device according to claim 1,
A display device characterized in that the shape of the refracting means is spherical or cylindrical. In the display device according to claim 1 or 2,
The display device characterized in that the convex shape is a circular shape. In the display device according to claim 3,
The shape of the refracting means is spherical,
A display apparatus, wherein the arrangement support means arranges each of the refracting means in at least one of a spherical shape and a cylindrical surface shape. In the display device according to claim 3,
The shape of the refracting means is cylindrical,
A display apparatus, wherein the arrangement support means arranges each of the refracting means in a cylindrical surface shape. In any one of claims 1 to 5,
The display device characterized in that the image is a still image. In any one of claims 1 to 5,
The display device characterized in that the image is a moving image.

Images