Holographic article and process for making same

Details Holographic article and process for making same Holographic article and process for making same

Filed on

1976-04-30

Date issued

1978-06-13

Examiner

Corbin, John K.

Other Related Categories

350162R, G02B 2700, G02B 518

Type

Patent

Status

active

Patent number

040945758

Description

ABSTRACT:
A holographic article preferably including a plurality of superimposed and/or spatially adjacent linear gratings, each of which has a spatial frequency different from that of the other gratings. The articles are formed as a result of an interference fringe field produced by two mutually coherent light beams impinging onto an assembly of a two-dimensional transparency and a photosensitive medium.

REFERENCES:
patent: 755983 (1904-03-01), Wood
patent: 1354471 (1920-10-01), Doner
patent: 3580655 (1971-05-01), Leith et al.
patent: 3695744 (1972-10-01), Clay
patent: 3820869 (1974-06-01), Bolusset et al.
patent: 3834786 (1974-09-01), Carlsen
patent: 3917378 (1975-11-01), Gale

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