S. Telada
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View article: Challenges of an optical pressure standard in medium vacuum measurements
Challenges of an optical pressure standard in medium vacuum measurements Open
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,…
View article: Development of a novel gauge filled with resin for X-ray CT
Development of a novel gauge filled with resin for X-ray CT Open
X-ray computed tomography (CT) systems have been widely used for three-dimensional (3D) measurements in the engineering field. Therefore, verifying X-ray CT systems with full traceability is necessary to ensure accurate measurements. Measu…
View article: Three-spherical-mirror test for radius of curvature measurement using a Fabry-Pérot cavity
Three-spherical-mirror test for radius of curvature measurement using a Fabry-Pérot cavity Open
A three-spherical-mirror test method that uses a Fabry-Pérot (FP) cavity is proposed for a radius of curvature measurement system, especially for radii larger than 10 m. By using the three-spherical-mirror test with mode spacing measuremen…