Single image plane two color photochromic display technique

Details Single image plane two color photochromic display technique Single image plane two color photochromic display technique

1975-06-10

1976-04-27

Aegerter, Richard E.

Optics: image projectors

Target, map or navigation projection

340173LM, 340173CC, 350160P, 350174, 353 31, 353 34, 353 36, 353 37, 353 82, 353 84, 353120, G03B 2126, G11B 702, G02B 523, G02B 2714

Patent

active

039531171

ABSTRACT:
A bi-color, single-image plane character display technique wherein the chcters of two distinct colors are written by a scanned ultraviolet beam onto respective photochromic layers disposed on opposite sides of a film situated in the path of a projected light beam, which film is transparent to the light beam but opaque to the ultraviolet beam.

REFERENCES:
patent: 3238841 (1966-03-01), Bjelland et al.
patent: 3454414 (1969-07-01), Andes et al.
patent: 3676591 (1972-07-01), Nix et al.
patent: 3706487 (1972-12-01), LaForgia

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