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Title: Hand held phase-shifting diffraction moire interferometer

Abstract

An interferometer in which a coherent beam of light is generated within a remote case and transmitted to a hand held unit tethered to said remote case, said hand held unit having optical elements for directing a pair of mutually coherent collimated laser beams at a diffraction grating. Data from the secondary or diffracted beams are then transmitted to a separate video and data acquisition system for recording and analysis for load induced deformation or for identification purposes. Means are also provided for shifting the phase of one incident beam relative to the other incident beam and being controlled from within said remote case.

Inventors:
 [1];  [1]
  1. (Idaho Falls, ID)
Issue Date:
Research Org.:
EG & G IDAHO INC
OSTI Identifier:
869510
Patent Number(s):
5349442
Assignee:
EG&G Idaho, Inc. (Idaho Falls, ID) INEEL
DOE Contract Number:  
AC07-76ID01570
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
hand; held; phase-shifting; diffraction; moire; interferometer; coherent; beam; light; generated; remote; transmitted; unit; tethered; optical; elements; directing; pair; mutually; collimated; laser; beams; grating; data; secondary; diffracted; separate; video; acquisition; recording; analysis; load; induced; deformation; identification; purposes; means; provided; shifting; phase; incident; relative; controlled; moire interferometer; collimated laser; beam relative; laser beams; data acquisition; optical element; diffraction grating; optical elements; laser beam; incident beam; hand held; diffracted beam; shifting diffraction; diffraction moire; induced deformation; held unit; diffracted beams; /356/250/

Citation Formats

Deason, Vance A., and Ward, Michael B. Hand held phase-shifting diffraction moire interferometer. United States: N. p., 1994. Web.
Deason, Vance A., & Ward, Michael B. Hand held phase-shifting diffraction moire interferometer. United States.
Deason, Vance A., and Ward, Michael B. Sat . "Hand held phase-shifting diffraction moire interferometer". United States. https://www.osti.gov/servlets/purl/869510.
@article{osti_869510,
title = {Hand held phase-shifting diffraction moire interferometer},
author = {Deason, Vance A. and Ward, Michael B.},
abstractNote = {An interferometer in which a coherent beam of light is generated within a remote case and transmitted to a hand held unit tethered to said remote case, said hand held unit having optical elements for directing a pair of mutually coherent collimated laser beams at a diffraction grating. Data from the secondary or diffracted beams are then transmitted to a separate video and data acquisition system for recording and analysis for load induced deformation or for identification purposes. Means are also provided for shifting the phase of one incident beam relative to the other incident beam and being controlled from within said remote case.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {1}
}

Patent:

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