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Title: Ferroelectric optical image comparator

Abstract

A ferroelectric optical image comparator has a lead lanthanum zirconate titanate thin-film device which is constructed with a semi-transparent or transparent conductive first electrode on one side of the thin film, a conductive metal second electrode on the other side of the thin film, and the second electrode is in contact with a nonconducting substrate. A photoinduced current in the device represents the dot product between a stored image and an image projected onto the first electrode. One-dimensional autocorrelations are performed by measuring this current while displacing the projected image.

Inventors:
 [1];  [1];  [1];  [2]
  1. (Albuquerque, NM)
  2. (Los Lunas, NM)
Issue Date:
Research Org.:
AT & T CORP
OSTI Identifier:
869044
Patent Number(s):
5267179
Assignee:
United States of America as represented by United States (Washington, DC) SNL
DOE Contract Number:  
AC04-76DP00789
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
ferroelectric; optical; image; comparator; lead; lanthanum; zirconate; titanate; thin-film; device; constructed; semi-transparent; transparent; conductive; electrode; film; metal; contact; nonconducting; substrate; photoinduced; current; represents; dot; product; stored; projected; one-dimensional; autocorrelations; performed; measuring; displacing; zirconate titanate; conductive metal; transparent conductive; optical image; induced current; lanthanum zirconate; lead lanthanum; stored image; image comparator; ferroelectric optical; conducting substrate; /382/

Citation Formats

Butler, Michael A., Land, Cecil E., Martin, Stephen J., and Pfeifer, Kent B. Ferroelectric optical image comparator. United States: N. p., 1993. Web.
Butler, Michael A., Land, Cecil E., Martin, Stephen J., & Pfeifer, Kent B. Ferroelectric optical image comparator. United States.
Butler, Michael A., Land, Cecil E., Martin, Stephen J., and Pfeifer, Kent B. Fri . "Ferroelectric optical image comparator". United States. https://www.osti.gov/servlets/purl/869044.
@article{osti_869044,
title = {Ferroelectric optical image comparator},
author = {Butler, Michael A. and Land, Cecil E. and Martin, Stephen J. and Pfeifer, Kent B.},
abstractNote = {A ferroelectric optical image comparator has a lead lanthanum zirconate titanate thin-film device which is constructed with a semi-transparent or transparent conductive first electrode on one side of the thin film, a conductive metal second electrode on the other side of the thin film, and the second electrode is in contact with a nonconducting substrate. A photoinduced current in the device represents the dot product between a stored image and an image projected onto the first electrode. One-dimensional autocorrelations are performed by measuring this current while displacing the projected image.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1993},
month = {1}
}

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