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Segmented curved screen construction for preserving a predefined curvature
| Details |
Inventors: Brown, William C.; Purtell, Frederick H.;
Assignee: The Singer Company (Binghamton, NY)
Primary Examiner: Wintercorn; Richard A.
Assistant Examiner:
Attorney, Agent or Firm: Rothenberg; Jeff, Kaufman; Stephen C.
A segmented curved screen (10) for preserving a predefined curvature of the screen surface for an image projection system. A screen segment (12) having a curved surface (14) with a lip having a front surface of predetermined configuration extending along the edge of the surface (16) is connected with a plurality of similar screen segments, (18) to form a segmented curved screen. An extended element (24) with curved surfaces (30, 32) having configurations corresponding to the configurations of associated lip front surfaces is positioned in a mating relationship with the screen segments, in order to secure the screen segments together. The segmented curved screen is so assembled that an exposed channel (38) is formed between any two screen segments. A substance (40) fills the exposed channel, providing a continuous transition surface between screen segments. |
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DETAILED DESCRIPTION We claim: 1.
A segmented curved screen for an image projection system which maintains a predefined curvature of the screen, said screen comprising: (a) a first screen segment having a first curved surface and a first lip having a first lip surface of predetermined configuration, said lip extending along an edge of said first curved surface; (b) a second screen segment having a second curved surface and a second lip having a second lip surface of predetermined configuration; said second lip extending along an edge of said second curved surface; (c) an extended element having a third curved surface, said third curved surface having a configuration corresponding to said predetermined configuration of said first lip surface and positioned in a mating relationship with said first lip surface, and a fourth curved surface, said fourth curved surface having a configuration corresponding to the predetermined configuration of said second lip surface and positioned in a mating relationship with said second lip surface; (d) joining means to connect said first lip surface with said third curved surface, and said second lip surface with said fourth curved surface, in a manner that forms an exposed channel between said first and second screen segments; and (e) a substance filling said exposed channel providing a continuous transition surface between said first and second screen segment surfaces, whereby a screen of predefined curvature is provided.
2.
A segmented curved screen as recited in claim 1, wherein said first and second lips each comprise a recessed lip.
3.
A segmented curved screen as recited in claim 2, wherein said lip surfaces comprise front surfaces.
4.
A segmented curved screen as recited in claim 1, wherein said configurations are substantially the same.
5.
A segmented curved screen as recited in claim 1, wherein said configurations are curves.
6.
A segmented curved screen as recited in claim 2, wherein said exposed channel is defined by the distance between said first and second screen segment surfaces and in depth by the distance from the first and second curved surfaces to the extended element
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