About: Measurement of the shape of objects by two wavelength interferometry

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	We propose a fast and precise optical 3D measurement method. The principle is similar to that of white-light interferometry. The broad-band light source of white-light interferometry is replaced by two lasers with different wavelengths. The object to be measured is placed into one arm of a Michelson interferometer and moved along the optical axis. The intensity measured at the output of the interferometer is equal to the field autocorrelation. In the case of two wavelengths, the autocorrelation is a periodical function with peaks as a result of their beating. The period can be adjusted by the choice of the wavelength difference. By choosing a short period, a fast and precise measurement is performed in the range of a single beat. However, such a measurement is ambiguous if the object has structures deeper than the beat period. The ambiguity is removed by a fast auxiliary measurement with a long beat period covering the whole depth range of the object. The auxiliary measurement need not be precise and can be completed quickly with a large sampling step. We propose a fast and precise optical 3D measurement method. The principle is similar to that of white-light interferometry. The broad-band light source of white-light interferometry is replaced by two lasers with different wavelengths. The object to be measured is placed into one arm of a Michelson interferometer and moved along the optical axis. The intensity measured at the output of the interferometer is equal to the field autocorrelation. In the case of two wavelengths, the autocorrelation is a periodical function with peaks as a result of their beating. The period can be adjusted by the choice of the wavelength difference. By choosing a short period, a fast and precise measurement is performed in the range of a single beat. However, such a measurement is ambiguous if the object has structures deeper than the beat period. The ambiguity is removed by a fast auxiliary measurement with a long beat period covering the whole depth range of the object. The auxiliary measurement need not be precise and can be completed quickly with a large sampling step. (en)
Title	Measurement of the shape of objects by two wavelength interferometry Measurement of the shape of objects by two wavelength interferometry (en)
skos:prefLabel	Measurement of the shape of objects by two wavelength interferometry Measurement of the shape of objects by two wavelength interferometry (en)
skos:notation	RIV/61989592:15310/13:33146184!RIV14-MSM-15310___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(ED2.1.00/03.0058), P(EE2.3.20.0017)
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Pavlíček, Pavel
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Palackého v Olomouci / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	86826
http://linked.open...ai/riv/idVysledku	RIV/61989592:15310/13:33146184
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	laser; 3D measurement; Two wavelength interferometry (en)
http://linked.open.../riv/klicoveSlovo	Two wavelength interferometry 3D measurement laser
http://linked.open...ontrolniKodProRIV	[5DAB48B34ED8]
http://linked.open...v/mistoKonaniAkce	Singapore
http://linked.open...i/riv/mistoVydani	Bellingham (OR)
http://linked.open...i/riv/nazevZdroje	International Conference on Optics in Precision Engineering and Nanotechnology (icOPEN)
http://linked.open...in/vavai/riv/obor	BH
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Regional Centre of Advanced Technologies and Materials Research team development of the Regional Centre of Advanced Technologies and Materials
http://linked.open...UplatneniVysledku	2013
http://linked.open...iv/tvurceVysledku	Pavlíček, Pavel Naik, Dinesh N
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open...ain/vavai/riv/wos	000323566900017
http://linked.open.../riv/zahajeniAkce	2013-04-09 (xsd:date)
issn	0277-786X
number of pages	6 (xsd:int)
http://bibframe.org/vocab/doi	10.1117/12.2019001
http://purl.org/ne...btex#hasPublisher	SPIE
https://schema.org/isbn	978-0-8194-9567-9
http://localhost/t...ganizacniJednotka	15310

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