Renewal of the gage-block interferometer at INRIM

Autor:	Bellotti, Roberto, Franco, Mauro, Picotto, Gian Bartolo, Pometto, Marco
Přispěvatelé:	Physikalisch-Technische Bundesanstalt (PTB)
Jazyk:	angličtina
Rok vydání:	2015
Předmět:	OCIS 120.3940 120.3940 metrology OCIS 120.3180 120.3180 gage block excess fractions fringe analysis interferometry INRIM
DOI:	10.7795/810.20150331a
Popis:	This article is based on a presentation at the conference "MacroScale 2014 - Recent developments in traceable dimensional measurements", Vienna (Austria), 28th-30th October 2014. The Hilger and Watts interferometer in use at INRIM for the calibration of gage blocks up to 100 mm has been recently upgraded with stabilized He-Ne laser sources providing traceable wavelengths at 633 nm, 543 nm and 594 nm. The new set-up has been validated by an internal comparison with reference gage blocks in use for the periodical verification of the overall measuring system. The fringe order ambiguity determined with the exact fractions method by using the two wavelengths at 633 nm and 543 nm has been tested and compared with that obtained by using all the three wavelengths.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b2de7a0552a0bb741cd7e550ba448416 Zobrazit plný text záznamu