Zobrazeno 1 - 10
of 78
pro vyhledávání: '"Youichi Bitou"'
Publikováno v:
Measurement: Sensors, Vol 22, Iss , Pp 100371- (2022)
Optical pressure standards (OPS) using Fabry-Perot (FP) cavities can measure a wide pressure range with high accuracy. National metrology institute of Japan (NMIJ) is developing an OPS for the pressure range of 1 Pa–100 kPa. In this study, the targ
Externí odkaz:
https://doaj.org/article/77e4e21598574aa59b19eeaba61d2c09
Autor:
Ines Fortmeier, Reyko Schachtschneider, Vit Ledl, Ondrej Matousek, Jens Siepmann, Antonia Harsch, Rolf Beisswanger, Youichi Bitou, Yohan Kondo, Michael Schulz, Clemens Elster
Publikováno v:
Journal of the European Optical Society-Rapid Publications, Vol 16, Iss 1, Pp 1-15 (2020)
Abstract A round robin comparison of freeform form measurements was carried out by the project partners and stakeholders of a European metrology research project. Altogether six measuring instruments were considered: five different (pointwise and are
Externí odkaz:
https://doaj.org/article/beaa536cfd3c42a394d461c86fc4836a
Publikováno v:
Measurement: Sensors, Vol 18, Iss , Pp 100339- (2021)
Optical pressure standards (OPS) using Fabry-Perot (FP) cavities can measure a wide pressure range with high accuracy. National metrology institute of Japan (NMIJ) is developing an OPS for a pressure range of 1 Pa–100 kPa. In this study, the target
Externí odkaz:
https://doaj.org/article/91e632538e3a4737bb7e30aed4eb79b2
Autor:
Yassir Arezki, Rong Su, Ville Heikkinen, François Leprete, Pavel Posta, Youichi Bitou, Christian Schober, Charyar Mehdi-Souzani, Bandar Abdulrahman Mohammed Alzahrani, Xiangchao Zhang, Yohan Kondo, Christof Pruss, Vit Ledl, Nabil Anwer, Mohamed Lamjed Bouazizi, Richard Leach, Hichem Nouira
Publikováno v:
Sensors, Vol 21, Iss 4, p 1103 (2021)
The design of innovative reference aspheric and freeform optical elements was investigated with the aim of calibration and verification of ultra-high accurate measurement systems. The verification is dedicated to form error analysis of aspherical and
Externí odkaz:
https://doaj.org/article/5e208ae826204d198959010b0780b38d
Akademický článek
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Autor:
Mohamed Lamjed Bouazizi, Bandar Alzahrani, Youichi Bitou, Vít Lédl, Nabil Anwer, Xiangchao Zhang, Hichem Nouira, Ville Heikkinen, Yassir Arezki, Yohan Kondo, Rong Su, Christof Pruss, Charyar Mehdi-Souzani, Richard Leach, François Leprete, Pavel Posta, Christian Schober
Publikováno v:
Arezki, Y, Su, R, Heikkinen, V, Leprete, F, Posta, P, Bitou, Y, Schober, C, Mehdi-Souzani, C, Alzahrani, B A M, Zhang, X, Kondo, Y, Pruss, C, Ledl, V, Anwer, N, Bouazizi, M L, Leach, R & Nouira, H 2021, ' Traceable reference full metrology chain for innovative aspheric and freeform optical surfaces accurate at the nanometer level ', Sensors, vol. 21, no. 4, 1103, pp. 1-19 . https://doi.org/10.3390/s21041103
Sensors
Volume 21
Issue 4
Sensors (Basel, Switzerland)
Sensors, Vol 21, Iss 1103, p 1103 (2021)
Sensors
Volume 21
Issue 4
Sensors (Basel, Switzerland)
Sensors, Vol 21, Iss 1103, p 1103 (2021)
The design of innovative reference aspheric and freeform optical elements was investigated with the aim of calibration and verification of ultra-high accurate measurement systems. The verification is dedicated to form error analysis of aspherical and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bedaa2faff879e1240ca4dee18864a81
http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-ds-126758
http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-ds-126758
Autor:
Yohan Kondo, Youichi Bitou
Publikováno v:
Advances in Metrology for X-Ray and EUV Optics IX.
The National Metrology Institute of Technology provides a flatness calibration service for large flat substrates using a Fizeau interferometer with 10 nm (k = 2) uncertainty over a measurement range of 300 mm. In the Fizeau interferometer, the surfac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b765251b45603e3f360d5fc6261b7bdd
https://doi.org/10.1117/12.2570412
https://doi.org/10.1117/12.2570412
Autor:
Clemens Elster, Antonia Harsch, Ondrej Matousek, Michael Schulz, Rolf Beisswanger, Yohan Kondo, Vít Lédl, Ines Fortmeier, Jens Siepmann, Reyko Schachtschneider, Youichi Bitou
Publikováno v:
Journal of the European Optical Society-Rapid Publications, Vol 16, Iss 1, Pp 1-15 (2020)
A round robin comparison of freeform form measurements was carried out by the project partners and stakeholders of a European metrology research project. Altogether six measuring instruments were considered: five different (pointwise and areal) optic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9fa6ba1432ce69af8beb77e18412ec9c
https://doi.org/10.1186/s41476-019-0124-1
https://doi.org/10.1186/s41476-019-0124-1
Publikováno v:
Precision Engineering. 54:149-153
An accurate, practicable, wide-range measurement system for the radius of curvature of spherical concave mirrors using resonant mode spacing measurements of a Fabry–Perot (FP) cavity without moving parts was developed in this study. Radius of curva
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dbcb0e200ec1b0f3809f26b27f07d374
https://doi.org/10.1016/j.precisioneng.2018.05.011
https://doi.org/10.1016/j.precisioneng.2018.05.011
Publikováno v:
Precision Engineering. 51:388-392
An ultraprecision system to evaluate the periodic error of linear encoders (PEL) has been developed. Our system is based on a homodyne laser interferometer as a reference scale. Conventional studies which used an interferometer with unknown periodic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c46d239b7c0f61ceceb41c60a60e5f92
https://doi.org/10.1016/j.precisioneng.2017.09.009
https://doi.org/10.1016/j.precisioneng.2017.09.009