Radiation imagery chemistry: process – composition – or product th – Holographic process – composition – or product
Patent
1990-05-17
1993-05-04
Bowers, Jr., Charles L.
Radiation imagery chemistry: process, composition, or product th
Holographic process, composition, or product
430 2, 359 1, 359 9, G03H 104, G03H 102
Patent
active
052081230
ABSTRACT:
The method involves directing first and second separate illuminating beams towards a photosensitive film from separate fixed apparent beam source positions respectively in such a manner that the beams are caused to overlap at the point of incidence at the photosensitive film. Stationary interference fringes are generated and the beams are caused to scan in a raster type pattern over the photosensitive film in such a manner whereby overlapping of the beams is maintained throughout the exposure of the film. The apparatus in one embodiment involves the generation of a third illuminating beam which is used to control means to control an associated scanner to effect synchronised movement of the second beam with the first beam. A further embodiment involves memorising the scanning movement of beam in a memory and using the memorised scanning pattern to control the scanner to maintain beam overlap.
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Fukaya, T. et al. "Holographic properties of Chalcogenide-metal Photosensitive Materials" Opt. Comm. 7, 98-102 (1973).
Angebranndt Martin
Bowers Jr. Charles L.
Davis IV F. Eugene
Pilkington P.E. Limited
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