1989-06-13
1990-09-11
Arnold, Bruce Y.
350 364, 35016212, 35016214, G02B 2608, G02B 2742, G02B 2746
Patent
active
049556916
ABSTRACT:
An optical processing system comprises first light source, a spatial modulator for modulating optical beam passing therethrough, an image input part for writing the input image on the modulator by means of an incoherent optical beam, an optical Fourier transform device, an optical memory for storing a plurality of image informations in a form of Fourier transform hologram comprising a medium which allows erasing and rewriting of information by optical beam, an image detection/light source device supplied with a plurality of optical beams for producing another optical beam in correspondence to one of the optical beams which has the maximum intensity along a path of that optical beam in a reversed direction, a second light source for irradiating the optical memory by another optical beam for writing a new information, an image output device provided in an optical path of the output beam, and a controller connected to the image input device, first light source and second light source for controlling energization thereof, in which the controller is further connected to the modulating means and optical memory means for clearing informations written thereon.
REFERENCES:
patent: 4284324 (1981-08-01), Huignard et al.
patent: 4389093 (1983-06-01), Jackson
patent: 4462046 (1984-07-01), Spight
patent: 4832447 (1989-05-01), Javidi
Inada Toshio
Mifune Hironobu
Ogura Yukio
Ueda Aki
Arnold Bruce Y.
Phan James
Ricoh & Company, Ltd.
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