Apparatus for displaying images wtih reduced coarseness

Details Apparatus for displaying images wtih reduced coarseness Apparatus for displaying images wtih reduced coarseness

1983-11-10

1986-05-06

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 56, 358230, 358242, 358251, 313474, 350401, 350404, H04N 916, H04N 912, H04N 572, H01J 2910

Patent

active

045875537

ABSTRACT:
An image display apparatus includes an image display screen which is formed by a plurality of picture display elements arranged repeatedly with a predetermined pitch for displaying an image as a set of plural picture elements. In this case, one or more double refraction plates are disposed in front of the image display screen so that light rays from the picture display elements are double-refracted by each double refraction plate and that the density of the picture display elements is increased apparently. Thus, in a color cathode ray tube in which a phosphor face is formed by color phosphors arranged in a stripe pattern, it is possible to reduce the coarseness of the texture of the color phosphor stripe.

REFERENCES:
patent: 2746030 (1956-05-01), Schrecongost
patent: 2979559 (1961-04-01), Burgett, Jr. et al.
patent: 3095475 (1963-06-01), Brake
patent: 3588224 (1971-06-01), Pritchard
patent: 3851093 (1974-11-01), Sunstein
patent: 4070596 (1978-01-01), Tsuneta et al.
patent: 4227208 (1980-10-01), Takanashi et al.

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