Real image projection system

Optics: image projectors – Plural

Patent

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Details

353 99, 353122, 359630, 359629, G02B 2714

Patent

active

051894521

ABSTRACT:
An image projection system uses a projection screen formed over at least a portion of a spherical surface, with either a retroreflective or a directional-specific reflecting material, along with a beamsplitter and at least one lens-projector combination for each real image input to the screen. More than one different input image may be simultaneously used, either with each of the different images provided to a different area of the screen for providing juxtaposed real images to a single observer, or with each of the different real images being provided to a different observer. A non-spherical screen may be used if a retroreflective screen material is used in a system for providing simultaneous real images to spatially-separated plural observers.

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patent: 4261647 (1981-04-01), Ellis
patent: 4354738 (1982-10-01), Forehand et al.
patent: 4383740 (1983-05-01), Bordovsky
patent: 4731527 (1988-03-01), Nomura et al.
patent: 4859030 (1989-08-01), Rotier

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