Real-time optical correlation system

Details Real-time optical correlation system Real-time optical correlation system

1980-11-04

1983-05-17

Arnold, Bruce Y.

Static information storage and retrieval

Magnetic bubbles

Guide structure

350 361, 350 381, 365123, G03H 116, G02B 532

Patent

active

043837344

ABSTRACT:
A correlation system providing the correlation function of two objects illuminated with coherent light by using the principle of double diffraction.
The correlation system of the invention is essentially characterized in that it uses as recording medium a plate of recyclable material, i.e. inscribable and erasable at will, such as bismuth-silicon oxide. The recording provided in the plate by superimposition of the beams illuminating the objects is read by a beam undergoing angular sweeping so as to optimize the diffraction efficiency for all the correlation peaks in the observation plane.

REFERENCES:
patent: 3519992 (1970-07-01), Rau
patent: 3544197 (1970-12-01), Weaver
patent: 3761154 (1973-09-01), Shupe et al.
patent: 3812496 (1974-05-01), Brooks
patent: 4138189 (1979-02-01), Huignard et al.
patent: 4174179 (1979-11-01), Tschudi et al.
Weaver, C. S., & Goodman, J. W., "A Technique for Optically Convolving Two Functions", Applied Optics, vol. 5, No. 7, Jul. 1966, pp. 1248-1249.

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