Projection television receiver having dichroic mirrors and a pro

Details Projection television receiver having dichroic mirrors and a pro Projection television receiver having dichroic mirrors and a pro

1979-05-21

1981-11-10

Psitos, Aristotelis M.

Facsimile and static presentation processing

Static presentation processing

Attribute control

H04N 916

Patent

active

043001564

ABSTRACT:
Apparatus is provided for projecting a television image to a distant screen using a lens which is not color corrected. Three separate images of different primary colors are produced by three kinescopes. The images are directed by a set of dichroic mirrors to a projection lens. A single image is thereafter projected by the lens to a distant screen. Color correction of the optics is achieved by altering the relative position of the kinescopes with respect to the dichroic mirror assembly and altering the magnitude of deflection signals supplied to each kinescope.

REFERENCES:
patent: 2586558 (1952-02-01), Oakhill
patent: 2855457 (1958-10-01), Loughren
patent: 2953635 (1960-09-01), De Gier
patent: 3969648 (1976-07-01), Hergenrother et al.
patent: 4051513 (1977-09-01), Takeuchi et al.
Theory and Design of Television Receivers; Deutsch, McGraw-Hill Book Co., First Edition, Copyright 1951, sections 11-9 through 11-13.

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