1978-05-24
1980-12-30
Wintercorn, Richard A.
G03B 2160
Patent
active
042419808
ABSTRACT:
An improved beam emission control means is disclosed for use in a projection system. The beam emission control means is constructed of highly reflective or transmissive materials in the form of an abutting matrix of a plurality of a single specially shaped element, the element having both convex and concave image-forming portions. The individual element typically has dimensions smaller than the receptor can resolve at the determined viewing distance and the convex and concave portions thereof are shaped to provide overlapping images at that viewing distance, each element therefore being perceived as a point source of that portion of the projected image displayed thereon. Because of the highly efficient surface and the arrangement of the matrix, the device is highly directional and thus provides substantially improved image quality, gain and intensity. The device is particularly suitable for use in the projection of visual images, and may be utilized in conjunction with a directional control apparatus to tailor the viewing area to particular environmental conditions.
REFERENCES:
patent: 2804801 (1957-09-01), Mihalakis
patent: 2984152 (1961-05-01), Mihalakis
patent: 3037424 (1962-06-01), Capetta
patent: 3063339 (1962-11-01), Mihalakis
patent: 3295910 (1967-01-01), Hourdiaux
patent: 3475086 (1969-10-01), Vetter
patent: 3809457 (1974-05-01), Kurtz et al.
Friend, legal representative by Barbara L.
Mihalakis, deceased Agis I.
McGeehon William C.
Wintercorn Richard A.
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