Uniform-brightness, high-gain display structures and methods
First Claim
1. A projection screen for reflecting radiation from a projector to a viewer who is spaced from said projector along a projector-viewer axis, said screen comprising:
- a plurality of reflective faces wherein;
each of said faces is shaped in the form of at least a portion of a ring and is positioned in a different one of a plurality of transverse planes wherein each of said transverse planes is transverse to said projector-viewer axis and has a different spacing from said projector; and
each of said faces is tilted so that, in any axial plane through said projector-viewer axis which intersects that face, the angle between said projector and a normal to that face substantially equals the angle between said viewer and said normal.
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Accused Products
Abstract
A uniform-brightness, high-gain projection screen is especially suited for reflecting radiation from a projector to a viewer who is spaced from the projector along a projection axis. The screen is formed with a plurality of reflective faces that each form at least a portion of a ring that is transverse to the projector axis, have different spacings from the projector and are axially tilted to set the projector-face angle equal to the viewer-face angle. The faces are preferably defined by a plurality of tiles that are bonded to the interior of a projection dome such as a flight simulator dome.
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Citations
23 Claims
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1. A projection screen for reflecting radiation from a projector to a viewer who is spaced from said projector along a projector-viewer axis, said screen comprising:
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a plurality of reflective faces wherein; each of said faces is shaped in the form of at least a portion of a ring and is positioned in a different one of a plurality of transverse planes wherein each of said transverse planes is transverse to said projector-viewer axis and has a different spacing from said projector; and each of said faces is tilted so that, in any axial plane through said projector-viewer axis which intersects that face, the angle between said projector and a normal to that face substantially equals the angle between said viewer and said normal. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A projection dome for reflecting radiation from a projector to a viewer within the dome who is spaced from said projector along a projector-viewer axis, said dome comprising:
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a plurality of tiles that are contiguously positioned over said inner surface with each tile defining a plurality of reflective faces, wherein; each of said faces is shaped in the form of at least a portion of a ring and is positioned in a different one of a plurality of transverse planes wherein each of said transverse planes is transverse to said projector-viewer axis and has a different spacing from said projector; and each of said faces is tilted so that, in any axial plane through said projector-viewer axis which intersects that face, the angle between said projector and a normal to that face substantially equals the angle between said viewer and said normal. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for reflecting radiation from a projector to a viewer who is spaced from said projector along a projector-viewer axis, said method comprising the steps of;
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shaping each of a plurality of reflective faces in the form of at least a portion of a ring; positioning said faces so that each lies in a different one of a plurality of transverse planes wherein each of said transverse planes is transverse to said projector-viewer axis and has a different spacing from said projector; tilting each of said faces so that, in any axial plane through said projector-viewer axis which intersects that face, the angle between said projector and a normal to that face substantially equals the angle between said viewer and said normal; and illuminating said faces with said radiation from said projector. - View Dependent Claims (22, 23)
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Specification