METRICA, l’archivio istituzionale della produzione scientifica dell’Istituto Nazionale di Ricerca Metrologica, ha lo scopo di raccogliere, documentare, conservare e pubblicare, anche ad accesso aperto, i prodotti della ricerca dell’Ente. METRICA utilizza la piattaforma IRIS (Institutional Research Information System) sviluppata da Cineca.
EnglishAn old photoelectric Hilger & Watts autocollimator (AC) has been modified at INRIM to perform accurate angle measurements on two axes in a range of ±250′′. A CMOS camera was placed in the focus of the AC’s optical system and a software implemented in LabVIEW processes on-line the image of the reticle projected on the camera. The data acquisition is triggerable at a selectable frequency up to some hertz to allow synchronization in critical applications. The AC’s sensitivity was determined through a calibration with respect to the national angle standard. The combined standard uncertainty of the AC calibration results to be equal to 0.035′′
Improved performance of a refurbished photoelectric autocollimator / Astrua, Milena; Pisani, Marco. - In: MEASUREMENT SCIENCE & TECHNOLOGY. - ISSN 0957-0233. - 32(2020), p. 015010.
| Titolo: | Improved performance of a refurbished photoelectric autocollimator | |
| Autori: | ||
| Data di pubblicazione: | 2020 | |
| Rivista: | MEASUREMENT SCIENCE & TECHNOLOGY | |
| Abstract: | An old photoelectric Hilger & Watts autocollimator (AC) has been modified at INRIM to perform... accurate angle measurements on two axes in a range of ±250′′. A CMOS camera was placed in the focus of the AC’s optical system and a software implemented in LabVIEW processes on-line the image of the reticle projected on the camera. The data acquisition is triggerable at a selectable frequency up to some hertz to allow synchronization in critical applications. The AC’s sensitivity was determined through a calibration with respect to the national angle standard. The combined standard uncertainty of the AC calibration results to be equal to 0.035′′ | |
| Full-text (pubblici): | none | |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
File in questo prodotto:
Copyright © 2022