Dr. Sonko Osawa Profile

Dr. Sonko Osawa

at National Metrology Institute of Japan

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Author

Publications (10)

Proceedings Article | 14 September 2011 Paper

Multi-probe system comprising three laser interferometers and one autocollimator for measuring flat bar mirror profile with nanometer accuracy on a high-precision micro-coordinate measuring machine

Ping Yang, Tomohiko Takamura, Satoru Takahashi, Kiyoshi Takamasu, Osamu Sato, Sonko Osawa, Toshiyuki Takatsuji

Proceedings Volume 8133, 81330T (2011) https://doi.org/10.1117/12.892385

KEYWORDS: Mirrors, Interferometers, Autocollimators, Laser stabilization, Sensors, Laser systems engineering, Motion measurement, Beam splitters, Receivers, Lasers

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Proceedings Article | 29 August 2008 Open Access

Standardization of noncontact 3D measurement

Toshiyuki Takatsuji, Sonko Osawa, Osamu Sato

Proceedings Volume 7066, 706602 (2008) https://doi.org/10.1117/12.797968

KEYWORDS: Standards development, Manufacturing, Calibration, Tin, 3D imaging standards, Metrology, Coating, 3D metrology, Chromium, Reflectivity

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Proceedings Article | 11 August 2008 Paper

Measurement of absolute optical thickness distribution of a mask-glass by wavelength tuning interferometry

Kenichi Hibino, Kim Yangjin, Youichi Bitou, Sonko Ohsawa, Naohiko Sugita, Mamoru Mitsuishi

Proceedings Volume 7063, 70630S (2008) https://doi.org/10.1117/12.797594

KEYWORDS: Refractive index, Interferometry, Optical testing, Phase measurement, Glasses, Wavelength tuning, Fizeau interferometers, Interferometers, Beam splitters, Ferroelectric materials

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Proceedings Article | 19 August 2005 Paper

Performance assessment of involute gear measurement by CMM using a double-ball artifact

Toshiyuki Takatsuji, Koshi Kondo, Aizo Kubo, Frank Haertig, Sonko Osawa, Kazuya Naoi, Tomizo Kurosawa, Masaharu Komori

Proceedings Volume 5879, 58790Q (2005) https://doi.org/10.1117/12.614851

KEYWORDS: Calibration, Metrology, Manufacturing, Glasses, Data acquisition

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Proceedings Article | 18 August 2005 Paper

First domestic comparison of ball plate calibration in Japan

Sonko Osawa, Toshiyuki Takatsuji, Tomizo Kurosawa

Proceedings Volume 5879, 58790U (2005) https://doi.org/10.1117/12.613856

KEYWORDS: Calibration, Standards development, Metrology, Relays, Ceramics, Interferometers, Manufacturing, Photography, Dysprosium, Temperature metrology

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Proceedings Article | 20 November 2003 Paper

Stability of the reference flat used in Fizeau interferometer and its contribution to measurement uncertainty

Toshiyuki Takatsuji, Sonko Osawa, Yutaka Kuriyama, Tomizo Kurosawa

Proceedings Volume 5190, (2003) https://doi.org/10.1117/12.505537

KEYWORDS: Finite element methods, Calibration, Ferroelectric materials, Fizeau interferometers, Aluminum, Phase measurement, Interferometers, Cameras, Spatial frequencies, Silica

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SPIE Journal Paper | 1 March 2002

High-performance laser tracker using an articulating mirror for the calibration of coordinate measuring machine

Hong Jiang, Sonko Osawa, Toshiyuki Takatsuji, Hironori Noguchi, Tomizo Kurosawa

OE, Vol. 41, Issue 03, (March 2002) https://doi.org/10.1117/12.10.1117/1.1447231

KEYWORDS: Mirrors, Retroreflectors, Calibration, Interferometers, Optical spheres, Optical tracking, Signal detection, Uncertainty analysis, Distance measurement, Beam splitters

Proceedings Article | 30 October 2001 Paper

Wavefront sensing of a rear-surface reflection through a transparent media suppressing multiple-beam interference effect

Kenichi Hibino, Toshiyuki Takatsuji, Sonko Osawa, Tomizo Kurosawa

Proceedings Volume 4596, (2001) https://doi.org/10.1117/12.447367

KEYWORDS: Reflection, Glasses, Profiling, Refractive index, Interference (communication), Interferometers, Phase measurement, Modulation, Phase shifts, Fizeau interferometers

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Proceedings Article | 22 October 2001 Paper

Japanese ultimate flatness interferometer (FUJI) and its preliminary experiment

Toshiyuki Takatsuji, Nobuaki Ueki, Kenichi Hibino, Sonko Osawa, Tomizo Kurosawa

Proceedings Volume 4401, (2001) https://doi.org/10.1117/12.445643

KEYWORDS: Interferometers, Collimators, CCD cameras, Silica, Ferroelectric materials, Nanoimprint lithography, Wave plates, Zerodur, Silicon, Semiconducting wafers

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Proceedings Article | 22 October 2001 Paper

Evaluation of the performance of a novel laser tracker used for coordinate measurements

Sonko Osawa, Toshiyuki Takatsuji, Jiang Hong, Hironori Noguchi, Tomizo Kurosawa

Proceedings Volume 4401, (2001) https://doi.org/10.1117/12.445613

KEYWORDS: Mirrors, Retroreflectors, Interferometers, Optical spheres, Laser systems engineering, Calibration, Laser development, Signal detection, 3D metrology, Optical fibers

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Showing 5 of 10 publications

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