Optical system for observation in real time with scanning

Details Optical system for observation in real time with scanning Optical system for observation in real time with scanning

1981-05-05

1984-04-10

Orsino, Jr., Joseph A.

Facsimile and static presentation processing

Facsimile

Recording apparatus

350 363, 350 364, 356347, 356349, 358 90, H04N 530

Patent

active

044424558

ABSTRACT:
An optical observation system in accordance with the invention comprises illumination means by scanning the object and means for detecting the radiation diffracted by the object. It also comprises an interaction medium in which the wave emerging from the object interferes with a pumping wave in order to induce in it a system of layers diffracting in real time a replica of the object wave propagating in the direction of said wave and a complex conjugate wave propagating in the opposite direction. These waves, which are isomorphic of the object wave help to improve the detection of the object.

REFERENCES:
patent: 3615135 (1971-10-01), Frazer
patent: 3632183 (1972-01-01), Haines et al.
patent: 3879988 (1975-04-01), Jacobs
patent: 4304458 (1981-12-01), Huignard et al.
Macouski-Considerations of Television Holography-Optica Acta, vol. 18, #1, 1971, pp. 31-39.
Applications of Nonlinear Phase Conjugation in Compensated Active Imaging by T. R. O'Mears; Dec. 11-15, 1978; pp. 542-553.
Dynamic Holography and Optical Image Processing by V. Markov et al., Optics and Laser Technology; Apr. 1979; vol. 11, #2, pp. 95-99.
L'holographie en Temps Reel Est Desormais Possible; Mesures Regulation Automatisme; vol. 44, #12, pp. 602-604.

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