Catadioptrically coupled color television projection system

Details Catadioptrically coupled color television projection system Catadioptrically coupled color television projection system

1975-11-28

1977-05-31

Richardson, Robert L.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358239, H04N 916, H04N 574

Patent

active

040273288

ABSTRACT:
A color television projection system that optically combines the outputs of three small cathode ray tubes, each projecting an image in one of three primary colors, to produce a full-color image that is not subject to the usual "color matrix" losses experienced by contemporary television receiver units. This system employs a solid optical system, similar to a classical Schmidt system, but modified by having the necessary colored beamsplitters immersed, as part of the fabrication process, within the solid optics near the primary focal plane to serve as the aperture stop for the system, and further modified by having an air separated corrector lens. Additional light energy efficiency, over contemporary techniques, is obtained by having the cathode ray tube faces immersed within the solid optics and optically coupled thereto by an appropriate optical bonding agent.

REFERENCES:
patent: 2466338 (1949-04-01), Traub
patent: 2899490 (1959-08-01), Cheetham et al.
patent: 3115544 (1963-12-01), Marley

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