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:
-
- 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)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01B - MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS
- 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}
}
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Works referenced in this record:
High-sensitivity moiré interferometry—A simplified approach: Superior results are obtained with simplified equipment and techniques
journal, March 1981
- Post, D.; Baracat, W. A.
- Experimental Mechanics, Vol. 21, Issue 3