Compact portable diffraction moire interferometer

Deason, V. A.; Ward, M. B.

Title: Compact portable diffraction moire interferometer

Full Record
Other Related Research

Abstract

A compact and portable moire interferometer used to determine surface deformations of an object. The improved interferometer is comprised of a laser beam, optical and fiber optics devices coupling the beam to one or more evanescent wave splitters, and collimating lenses directing the split beam at one or more specimen gratings. Observations means including film and video cameras may be used to view and record the resultant fringe patterns. 7 figs.

Inventors:: Deason, V. A.; Ward, M. B.

Issue Date:: 1988-05-23

Research Org.:: EG and G Idaho, Inc., Idaho Falls, ID (United States)

OSTI Identifier:: 6295560

Patent Number(s):: 7197235

Application Number:: ON: DE89009651

Assignee:: Dept. of Energy

Patent Classifications (CPCs):: C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08L - COMPOSITIONS OF MACROMOLECULAR COMPOUNDS

G - PHYSICS G11 - INFORMATION STORAGE G11B - INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER

Show more

C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08L - COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
C08L67/025 - {containing polyether sequences}

G - PHYSICS G11 - INFORMATION STORAGE G11B - INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
G11B19/02 - Control of operating function, e.g. switching from recording to reproducing
G11B19/022 - {Control panels}
G11B20/10 - Digital recording or reproducing
G11B20/10527 - {Audio or video recording
G11B20/12 - Formatting, e.g. arrangement of data block or words on the record carriers {
G11B20/1217 - {on discs}
G11B2020/10546 - {specifically adapted for audio data}
G11B2020/1062 - {Data buffering arrangements, e.g. recording or playback buffers}
G11B2020/10944 - {Real-time recording or reproducing, e.g. for ensuring seamless playback of AV data}
G11B2220/211 - Discs having both read-only and rewritable or recordable areas containing application data
G11B2220/2562 - DVDs [digital versatile discs]
G11B27/105 - {of operating discs}
G11B27/322 - {used signal is digitally coded}
G11B27/329 - {on a disc [VTOC]}

H - ELECTRICITY H04 - ELECTRIC COMMUNICATION TECHNIQUE H04N - PICTORIAL COMMUNICATION, e.g. TELEVISION
H04N5/85 - on discs or drums
H04N5/9261 - {involving data reduction}
H04N9/8042 - {involving data reduction}
H04N9/8063 - {using time division multiplex of the PCM audio and PCM video signals}
H04N9/8205 - {involving the multiplexing of an additional signal and the colour video signal}
H04N9/877 - by assembling picture element blocks in an intermediate memory

Show less

DOE Contract Number:: AC07-76ID01570

Resource Type:: Patent

Resource Relation:: Other Information: Portions of this document are illegible in microfiche products

Country of Publication:: United States

Language:: English

Subject:: 47 OTHER INSTRUMENTATION; INTERFEROMETERS; DESIGN; DIFFRACTION; FIBER OPTICS; GRATINGS; INVENTIONS; LASERS; PORTABLE EQUIPMENT; COHERENT SCATTERING; EQUIPMENT; MEASURING INSTRUMENTS; SCATTERING; 440300* - Miscellaneous Instruments- (-1989)

Citation Formats


                    Deason, V. A., and Ward, M. B.. Compact portable diffraction moire interferometer.  United States: N. p., 1988. 
        Web.

Copy to clipboard


                    Deason, V. A., & Ward, M. B.. Compact portable diffraction moire interferometer.  United States.

Copy to clipboard


                    Deason, V. A., and Ward, M. B.. Mon .  
        "Compact portable diffraction moire interferometer".  United States.  https://www.osti.gov/servlets/purl/6295560.

Copy to clipboard


                    
@article{osti_6295560,

  title        = {Compact portable diffraction moire interferometer},

  author       = {Deason, V. A. and Ward, M. B.},

  abstractNote = {A compact and portable moire interferometer used to determine surface deformations of an object. The improved interferometer is comprised of a laser beam, optical and fiber optics devices coupling the beam to one or more evanescent wave splitters, and collimating lenses directing the split beam at one or more specimen gratings. Observations means including film and video cameras may be used to view and record the resultant fringe patterns. 7 figs.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1988},

  month        = {5}

}

Copy to clipboard

Patent:

Save / Share:

Export Metadata

Save to My Library

Similar Records in DOE Patents and OSTI.GOV collections:

Compact portable diffraction moire interferometer

Patent Deason, Vance A [Shelley, ID]; Ward, Michael B [Idaho Falls, ID]

A compact and portable moire interferometer used to determine surface deformations of an object. The improved interferometer is comprised of a laser beam, optical and fiber optics devices coupling the beam to one or more evanescent wave splitters, and collimating lenses directing the split beam at one or more specimen gratings. Observation means including film and video cameras may be used to view and record the resultant fringe patterns.
Full Text Available
A compact portable diffraction moire interferometer

Conference Deason, V A; Ward, M B

This device utilizes single mode polarization maintaining optical fibers to generate the pair of laser beams required by diffraction moire interferometry. Design of the device permits extremely rapid and convenient setup for measurement of in-plane displacement distributions on the surfaces of specimens. The device, applications, and typical data are described. 4 figs.
DOI: https://doi.org/10.1117/12.962728

Full Text Available
Hand held phase-shifting diffraction Moire interferometer

Patent Deason, V A; Ward, M B

An interferometer is described 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 beingmore » « less
Hand held phase-shifting diffraction moire interferometer

Patent Deason, Vance A [Idaho Falls, ID]; Ward, Michael B [Idaho Falls, ID]

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 frommore » within said remote case. « less
Full Text Available
Four beam interferometer manual: Operating instructions for the INEL diffraction Moire interferometer

Technical Report Deason, V A

Moire interferometry is an interferometric method for measuring changes of in-plane geometry. It is essentially insensitive to out-of-plane topography or changes in that topography. Changes in geometry are referenced to a particular moment in time when the moire` sensor, a diffraction grating, was attached to the specimen. Distortions experienced by the specimen prior to that time are not directly detectable, although they may be inferred from specimen behavior or condition. In its most common form, moire interferometry is not well suited to large (> 50 mm square), curved (< 300 mm diameter) or high temperature (> 200 C) regions. However,more » « less
DOI: https://doi.org/10.2172/10145874

Full Text Available

Similar Records