Optical encoding and correlation system

Details Optical encoding and correlation system Optical encoding and correlation system

1992-03-30

1993-08-10

Arnold, Bruce Y.

Optical: systems and elements

Diffraction

Using fourier transform spatial filtering

359559, 364822, 382 31, 382 42, G02B 518

Patent

active

052354610

ABSTRACT:
An optical correlator system for encoding a complex optical image onto a erent beam of light such as a laser and comparing it with a reference complex image. One embodiment of the invention encodes phase only information of the complex image onto the coherent beam of light by means of a liquid crystal television receiver. The light beam is passed through the liquid crystal television receiver, whose pixels are manipulated to provide phase information concerning the image. A second embodiment of the invention encodes both phase and amplitude components of a complex image onto the coherent beam of light such as a laser beam. Either or both encodings are utilized in the optical correlator system.

REFERENCES:
patent: 4695973 (1987-09-01), Yu
patent: 4826285 (1989-05-01), Horner
patent: 4925296 (1990-05-01), Reichmuth
patent: 5024508 (1991-06-01), Horner
patent: 5107351 (1992-04-01), Leib et al.

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