1989-03-28
1991-04-09
Arnold, Bruce Y.
350509, G03H 102, G02B 2100
Patent
active
050059270
ABSTRACT:
A microscope that preferentially displays either moving or stationary objects. This all-optical device operates in real-time using the coupling of optical beams in suitable nonlinear medium such as a photorefractive crystal of barium titanate. A holographic image is continuously written and compared with the real image. For the transient detection microscope any discrepancy between the two images is immediately visible. In the stationary object enhancing microscope stationary objects are enhanced and preferentially displayed.
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Cronin-Golomb et al.; "Photorefractive Time Differentiation of Coherent Optical Images"; Optics Letters; vol. 12, No. 12; Dec. 1987; pp. 1029-1031.
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Feinberg et al., "Photorefractive Effects and Charge Migration in Barium Titanate" published in the Journal of Applied Physics, vol. 51, #3, p. 1297, Mar. 1980.
Cudney et al., "The Transient Detection Microscope" published on Mar. 31, 1988 in vol. 332 of Nature (International Weekly Journal of Science).
Cudney Roger S.
Feinberg Jack L.
Pierce Robert M.
Arnold Bruce Y.
Auton William G.
Parsons David R.
Singer Donald J.
The United States of America as represented by the Secretary of
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