Method and apparatus for producing visual patterns with lenticul

Details Method and apparatus for producing visual patterns with lenticul Method and apparatus for producing visual patterns with lenticul

1981-02-02

1985-02-12

Corbin, John K.

Optics: measuring and testing

Range or remote distance finding

With photodetection

356 71, 356374, G02B 2700

Patent

active

044987366

ABSTRACT:
A lenticular sheet system having an air gap between a pair of superimposed lenticular sheets which does not diminish or attenuate the spacial optical effect produced by the superimposed lenticular sheets and which is made possible by coating both sides of one of the lenticular sheets with a transparent coating having a coefficient of refraction slightly different than the coefficient of refraction of that sheet.

REFERENCES:
patent: 2259395 (1940-07-01), Sachtleben
patent: 3166625 (1965-01-01), Brumley
patent: 3357772 (1967-12-01), Rowland
patent: 3653747 (1972-04-01), Kogelnik
patent: 4070097 (1978-01-01), Gelber

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