JP2014038310A - Method and device for displaying spherical image - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for displaying a spherical image that arranges light emitting sources along a spherical surface and that minimizes gaps between light emitting modules.SOLUTION: In a device for displaying a spherical image in which a plurality of light emitting modules 10 including a group of a plurality of light emitting elements 10 are used for tiling along a spherical surface, twenty spherical surface triangle areas III in each of which a circumscribed spot is an apex is obtained, with assumption that a sphere II is circumscribed to a regular icosahedron I, and a plurality of divided triangle areas V are obtained by equally dividing every side of the twenty spherical surface triangles. The light emitting modules 10, which have sizes and shapes that are matched with the divided triangle areas, are used for tiling.

Description

  The present invention relates to a spherical image display method and display device for displaying an image such as a moving image or a still image on a spherical surface, and more particularly to a spherical image display method and device in which light emitting sources are arranged along a spherical surface.

  When displaying images such as movies and still images related to astronomy, space, and the earth, images such as academic videos and still images, and entertainment images such as movies and still images, a spherical display is used. Attempts have been made to display above.

  When displaying images and images, there are means for arranging light emitting elements such as LEDs and organic EL on the display surface in a matrix, in addition to means by projection by a projector. As a technique for displaying a spherical image using the former means, an invention in which an image is projected from a projector on a transmissive spherical screen is known (Patent Document 1). Regarding the latter means, a well-known technique (Patent Document 2) for tiling a light emitting module constituted by a set of a plurality of light emitting elements is applied, and a spherical shape in which a rectangular light emitting module is tiled on the surface of a sphere. Image display devices are known (Non-Patent Documents 1 and 2).

  Non-Patent Document 1 discloses a technology in which 10,362 square organic EL small panels (light emitting modules) of 96 mm square are spread on an aluminum sphere to form a sphere display having a diameter of about 6 m.

JP 2006-184404 A JP 2004-191487 A Announcement of delivery of Aurora Vision OLED for the National Museum of Emerging Science “Geo-Cosmos”, Internet search on 16 July 2012, URL (http://www.mitsubishielectric.co.jp/news/2011/pdf/0601.pdf ) Permanent exhibition at the National Museum of Emerging Science and Innovation, July 16, 2012 Internet search, URL (http://www.miraikan.jst.go.jp/sp/exhibition/geo-cosmos.html)

  However, when tiling light emitting modules, the spherical surface cannot be equally divided in a large number of rectangular regions, and as shown in FIG. 11, between the light emitting modules M tiled on the surface of the sphere 100. Has a problem that a gap S is generated.

  In addition, as a result of being unable to divide the spherical surface equally into a number of rectangular areas, the regularity of the division is lacking. There was also a problem that was not possible.

  The spherical image display method of the present invention was created in view of the above problems, and a spherical light emitting module formed by assembling a plurality of light emitting modules formed of a set of a plurality of light emitting elements along a spherical surface has a spherical shape. In displaying an image, assuming a sphere circumscribing a regular icosahedron, 20 spherical triangular regions whose vertices are vertices are obtained, and each side of these triangles is equally divided to obtain a plurality of A divided triangular area is obtained, and the divided triangular area is used as a unit of a triangular light emitting module to be tiled.

  The spherical image display device according to the present invention is a spherical image display device in which a plurality of light emitting modules constituted by a set of a plurality of light emitting elements are tiled along a spherical surface, and the spherical body circumscribing a regular icosahedron. As a result, 20 spherical triangular areas whose vertices are circumscribed are obtained, and by dividing each side of these triangles equally, a plurality of divided triangular areas are obtained, which match the divided triangular areas. A light emitting module having a size and a shape is tiling.

  FIG. 1 is a diagram for explaining the basic principle of the present invention. The present invention was created by focusing on the fact that a regular polyhedron having the largest number of faces in a three-dimensional space, that is, a regular polyhedron that is apparently closest to a sphere is a regular icosahedron, and its constituent faces are regular triangles.

  In FIG. 1, “a” is a regular icosahedron, and is composed of 20 surfaces of regular triangles that are constituent surfaces of the same size. If a sphere is circumscribed on a regular icosahedron a and the twelve points that are circumscribed are connected by sides composed of great circles (arcs), the region surrounded by the three sides constitutes a spherical triangle c, B is divided into 20 spherical triangles having the same size and shape. Side AB, side BC, and side CA of the spherical triangle C have the same dimensions. For example, if these three sides are divided into four, as shown in FIG. A spherical surface filled with fine divided triangle areas is created. Similarly, when divided into 5 divisions, 6 divisions, 7 divisions, 8 divisions, 9 divisions, 10 divisions, 11 divisions, 12 divisions, 13 divisions, 14 divisions, 15 divisions, 16 divisions, etc. , 500, 720, 980, 1280, 1620, 2000, 2420, 2820, 3880, 3920, 4500, 5120, and so on.

The total number X of spherical triangles formed when the spherical triangle of c is divided into n is X = 20n ²
Calculated by
FIG. 7 shows a spherical surface D filled with 320 divided triangular regions 320 divided into four, and FIG. 8 shows a spherical surface D filled with divided triangular regions 1280 divided into eight spherical triangles. Similarly, a spherical surface D filled with the divided triangular region 5120 plane obtained by dividing the spherical triangle into 16 parts is shown.

  The present invention is a unit of a triangular light emitting module that is tiled with the above-described divided triangular region e. Therefore, according to the present invention, it is possible to realize a spherical image display device in which the gap can be reduced as much as possible and the seam is not visible when viewing.

  In addition, since the spherical surface can be divided almost equally into a large number of divided triangular areas, it has regularity when divided and it is easy to set the tiling position and the tiling angle of the light emitting module when tiling the light emitting module. It also has the effect of being.

Explanatory drawing which shows the basic principle of this invention. The front view of the light emitting module used for this invention. The AA line partial enlarged view of FIG. The top view of the light emitting module used for this invention. Same as above, rear view. Same as above, right side view. The front view of the Example of the display apparatus of the spherical image of this invention. The front view of the Example from which the display apparatus of the spherical image of this invention differs. The front view of the Example from which the display apparatus of the spherical image of this invention differs. The front view of the Example which shows the usage method of the display apparatus of the spherical image of this invention. The fragmentary perspective view of the spherical image of a prior art.

  Embodiments of a spherical image display device according to the present invention will be described below with reference to the accompanying drawings. 1-6 is a figure which shows the light emitting module 1 used for this invention. The light emitting module 1 is a device in which a plurality of sheets are spread on the surface of a spherical substrate (not shown), that is, tiling, thereby completing the spherical image display device D covering the surface. 1 is formed in a triangular shape that matches the divided triangular region e in FIG.

  As described above, the light emitting module 1 is assumed to be a sphere circumscribing a regular icosahedron and obtains 20 spherical triangular regions whose vertices are circumscribed, and equally divides each side of these triangles. A plurality of divided triangle areas are obtained, and have a size and shape that match the divided triangle areas. Therefore, originally, the three sides must be arcuate, and the surface must also form a spherical surface. However, when the spherical triangle is divided into four, 16 divided triangle regions are obtained, and the spherical image display device is 320 planes, that is, 320 light emitting modules are laid. Therefore, if the diameter of the display device is 2.12 m, the dimension of each side of the light emitting module is 294 mm, and even if the three sides of the light emitting module are linear and the surface is flat, the display device appears to be a sphere. It can be expressed nearby. Incidentally, the numerical value of 2.12 m is a numerical value that is 1/6 million of the diameter of the earth when the spherical image display device is regarded as the earth.

  The above apparent phenomenon means that a common light emitting module can be used regardless of the size of the spherical image display device. For example, a display device having a diameter of 2.12 m is composed of 320 modules. If the same module is used as a unit of a divided triangle area obtained by dividing the spherical triangle C into eight parts, a sphere with a diameter of 4.25 m (1/3 million of the diameter of the earth) will be divided into 16 parts. If 5120 units are used as a unit of area, a sphere of 8.5 m (1 / 1.5 million of the earth diameter) can be formed.

  Reference numeral 10 in the drawing denotes a display element surface disposed on the front surface of the light emitting module 1. A large number of light emitting elements 11 such as LEDs are arranged in a matrix on the display element surface 1 as shown in the enlarged view of line AA in FIG. In the light emitting module 1 of this embodiment in which the dimension of each side is 294 mm, 2080 light emitting elements 11 are arranged.

  The light emitting module 1 is attached to the surface of a spherical base (not shown) with latch bolts 12 protruding from three locations on the back. In this case, the light emitting module 1 has a shape in which a triangular pyramid is cut in parallel to the bottom surface, and its side surface is inclined 5 degrees from the right angle with respect to the front surface (display element surface). As a result, the apex of the triangle is inclined 9.9 degrees from the right angle. This is because the light emitting modules are combined to form a sphere, and a gap is generated when the side surface is at right angles to the display element surface.

  In the figure, reference numeral 13 is a power output connector provided on the back of the light emitting module, 14 is a power input connector, 15 is a signal output connector, 16 is a signal input connector, and 17 is a cooling inlet.

  FIG. 7 shows a display device D for a spherical image with a diameter of 2.12 m filled with the divided triangular region 320, using the light emitting module 1 as a unit of a divided triangular region obtained by dividing the spherical triangle C into four parts. Similarly, the light emitting module 1 is used as a unit of a divided triangle area obtained by dividing the spherical triangle C into eight, and a spherical image display device D having a diameter of 4.25 m filled with the divided triangle area 1280 is shown in FIG. The light emitting module 1 is used as a unit of a divided triangle area obtained by dividing a spherical triangle C into 16 parts, and is a view showing a display device D for a spherical image having a diameter of 8.5 m that is filled with the divided triangle area 5120 plane.

  As shown in FIG. 10, the spherical image display device D of the present invention having the above configuration is used by being suspended from the ceiling 20 by a suspension member 21 or standing on the floor surface. .

  In the above embodiment, the light emitting module is tiled on the surface of the spherical substrate. However, the light emitting module is tiled on the inner surface (inside) of the spherical substrate so that the light emitting module is directed inward of the sphere. An image may be displayed. In this case, the sphere may be a dome-like part of a sphere such as a hemisphere instead of the whole sphere.

1 Light emitting module A Regular icosahedron B Sphere circumscribing the icosahedron C Spherical triangular area E Divided triangular area

Claims (2)

When displaying a spherical image by tiling a plurality of light emitting modules composed of a set of light emitting elements along a spherical surface, each circumscribed point is assumed to be a sphere circumscribing a regular icosahedron. 20 spherical triangular regions as vertices are obtained, and each side of these triangles is equally divided to obtain a plurality of divided triangular regions, and a unit of a triangular light emitting module tiled with the divided triangular regions A spherical image display method characterized by the above. In a spherical image display device in which a plurality of light emitting modules configured by a set of a plurality of light emitting elements are tiled along a spherical surface, each circumscribed point is a vertex assuming a sphere circumscribing a regular icosahedron. 20 spherical triangular areas are obtained, and by dividing each side of these triangles equally, a plurality of divided triangular areas are obtained, and a light emitting module having a size and shape matching the divided triangular areas is tiled. A spherical image display device.

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