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EP0335282A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Three-dimensional photographing and three-dimensional playback device by spatial time-sharing method

Assignee: Individual
•
Filing: 1989-03-24
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Granted: —
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Expires: 2009-03-24
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Abstract

Abstract A three-dimensional photographing and three-dimensional playback device by spatial time-sharing method has a taking section having a convex lens (2), an image pickup screen (3) spaced from the convex lens at a distance equal to the focal length (f) of the convex lens, and a pin hole (4) movable on a surface of the convex lens, and a playback section having a cylindrical lens (6), an image output screen (51) spaced from the cylindrical lens at a distance equal to the focal length (f) of the cylindrical lens, and a vertical slit (7) movable on a surface of the cylindrical lens. The pin hole in the taking section and the vertical slit in the playback section are scanned in synchronization whereby any image can be photographed and played back three-dimensionally without using any special instrument such as polarized glasses, etc.

Inventors

  • 👤 Tomohiko Hattori

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-07 20:06
CPC Classifications
G; G02; G02B; G02B30/00; G02B30/20; G02B30/22; G02B30/24; G02B3/00; G02B3/02; G02B3/08; H; H04; H04N; H04N13/00; H04N13/20; H04N13/204; H04N13/207; H04N13/211; H04N13/296; H04N13/30; H04N13/302; H04N13/32; H04N13/398; H04N13/221; H04N13/332; H04N13/334; H04N13/337

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 156 words
A three-dimensional photographing and three-dimensional playback device by spatial time-sharing method comprising: a taking section composed of a convex lens, an image pickup screen and a pin hole movable on a surface or through an inner part of said convex lens, the distance between said convex lens and said image pickup screen being equal to the focal length of said convex lens; and a playback section composed of a lens member selected out of a cylindrical lens and a convex lens, an image output screen and a narrow opening member selected out of a vertical slit and a pin hole, which is movable on a surface or through an inner part of said lens member, the distance between said lens member and said image output screen being equal to the focal length of said lens member; said pin hole in said taking section and said narrow opening member in said playback section being scanned in synchronization.
Claim 2
Dependent Claim 156 words
A three-dimensional photographing and three-dimensional playback device by spatial time-sharing method comprising: a taking section composed of a convex lens, an image pickup screen and a pin hole movable on a surface or through an inner part of said convex lens, the distance between said convex lens and said image pickup screen being equal to the focal length of said convex lens; and a playback section composed of a lens member selected out of a cylindrical lens and a convex lens, an image output screen and a narrow opening member selected out of a vertical slit and a pin hole, which is movable on a surface or through an inner part of said lens member, the distance between said lens member and said image output screen being equal to the focal length of said lens member; said pin hole in said taking section and said narrow opening member in said playback section being scanned in synchronization.
Claim 3
Dependent Claim 82 words
A three-dimensional photographing and three-dimensional playback device according to claim 1, wherein said pin hole in said taking section is movable in the horizontal directon, said lens member in said playback section is said cylindrical lens which is convex in the horizontal direction, said narrow opening member is said vertical slit which is movable in the horizontal direction, and said pin hole in said taking section and said vertical slit in said playback section are scanned in synchronization in the horizontal direction.
Claim 4
Dependent Claim 46 words
A three-dimensional photographing and three-dimensional playback device according to claim 1, wherein said pin hole and said vertical slit are composed of an electro-optical shutter such as PLZT and a liquid crystal plate, respectively, which can be scanned at high speed in synchronization with each other.
Claim 5
Dependent Claim 26 words
A three-dimensional photographing and three-dimensional playback device according to claim 1, wherein said convex lens and said sylindrical lens are composed of a Fresnel lens, respectively.

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