Segmented ellipsoidal projection system
First Claim
1. A projection system comprising:
- a plurality of screen segments, each defining a surface in the shape of an ellipsoidal segment such that each surface has a first focal point and a second focal point, said screen segments arranged such that an edge of the surface of one of the screen segments is essentially adjacent along its entire length to an edge of the surface of another screen segment; and
a plurality of projectors equal to the number of screen segments wherein each of said projectors projects an image upon one of the screen segments from the second focal point of that screen segment.
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Abstract
The present invention is a projection system which includes a plurality of screen segments, each defining a surface in the shape of an ellipsoidal segment such that each surface has a first focal point and a second focal point. The screen segments are arranged such that an edge of the surface of one of the screen segments is essentially adjacent along its entire length to an edge of the surface of another screen segment. The projection system also includes a plurality of projectors, equal to the number of screen segments. Each of the projectors projects an image upon one of the screen segments from the second focal point of that screen segment. Preferably, the screen segments are arranged such that the first focal points of their surfaces essentially coincide with each other.
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Citations
11 Claims
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1. A projection system comprising:
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a plurality of screen segments, each defining a surface in the shape of an ellipsoidal segment such that each surface has a first focal point and a second focal point, said screen segments arranged such that an edge of the surface of one of the screen segments is essentially adjacent along its entire length to an edge of the surface of another screen segment; and a plurality of projectors equal to the number of screen segments wherein each of said projectors projects an image upon one of the screen segments from the second focal point of that screen segment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for forming a projection system comprising the steps of:
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placing a plurality of ellipsoidal screens adjacent each other such that they each essentially have a same first focal point; choosing a viewpoint on an ellipsoidal screen which provides sufficient eye relief for observers; and selecting a second focal point sufficiently far from the viewpoint to a projector at the second focal point to illuminate the entire corresponding screen, and sufficiently high to avoid blocking light of any other projectors that are used to illuminate other corresponding screens. - View Dependent Claims (11)
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Specification