IMAGE-PRODUCING APPARATUS
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Abstract
An apparatus (3) for generating a three-dimensional kaleidoscopic image, comprising a screen (4) for the projection of images thereon, and a plurality of mirrors (31,32,33) surrounding the screen, wherein the screen is substantially shaped as a portion of a surface of a polyhedron or sphere with an icosahedral group symmetry of reflection, and the plurality of mirrors are aligned with planes extending through a projected centre of said polyhedron or sphere and intersecting each edge of the screen such that an image generated on the screen is reflected in the mirrors to produce an apparent three-dimensional image of said polyhedron or sphere.
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Citations
41 Claims
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1-21. -21. (canceled)
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22. An apparatus for producing a three-dimensional kaleidoscopic image, the apparatus comprising:
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a screen for the generation of images thereon; and a plurality of mirrors surrounding the screen, wherein the screen is substantially shaped as a portion of a surface of a sphere or polyhedron having icosahedral group symmetry, wherein the plurality of mirrors are aligned with planes extending through a projected centre of said polyhedron or sphere and intersecting each edge of the screen, and wherein each mirror is aligned with an icosahedral plane of symmetry of said sphere or polyhedron having icosahedral group symmetry such that a source image generated on the screen is reflected in the mirrors to produce an apparent three-dimensional image of said polyhedron or sphere. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. A method of forming a screen of an apparatus for producing a three-dimensional kaleidoscopic image, wherein the apparatus includes a screen for the generation of images thereon and a plurality of mirrors surrounding the screen, wherein the screen is substantially shaped as a portion of a surface of a sphere or polyhedron having icosahedral group symmetry, and the plurality of mirrors are aligned with planes extending through a projected centre of said polyhedron or sphere and intersecting each edge of the screen, wherein each mirror is aligned with an icosahedral plane of symmetry of said sphere or polyhedron having icosahedral group symmetry such that a source image generated on the screen is reflected in the mirrors to produce an apparent three-dimensional image of said polyhedron or sphere, the method comprising the steps of:
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selecting the polyhedron or sphere of which an apparent three-dimensional image is to be produced; selecting a defined portion of the polyhedron representing a fundamental domain; and rotating and reflecting said defined portion to form the screen which is composed of discrete portions thereof.
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39. A method of forming a source image to be generated on a screen of on an apparatus for producing a three-dimensional kaleidoscopic image, the apparatus including a screen for the generation of images thereon and a plurality of mirrors surrounding the screen, wherein the screen is substantially shaped as a portion of a surface of a sphere or polyhedron having icosahedral group symmetry, and the plurality of mirrors are aligned with planes extending through a projected centre of said polyhedron or sphere and intersecting each edge of the screen, wherein each mirror is aligned with an icosahedral plane of symmetry of said sphere or polyhedron having icosahedral group symmetry such that a source image generated on the screen is reflected in the mirrors to produce an apparent three-dimensional image of said polyhedron or sphere, the method comprising the steps of:
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selecting a base image; cropping said base image into a defined triangular shape representing a fundamental domain; and rotating and reflecting said cropped image to form the source image composed of discrete cropped images, wherein the edges of the screen define the shape of the source image. - View Dependent Claims (40, 41)
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Specification