Dr. Hiroo Fujita Profile

Dr. Hiroo Fujita

at Citizen Watch Co Ltd

SPIE Involvement:

Author

Publications (10)

Proceedings Article | 7 November 2005 Paper

Liquid crystal grating for profilmetry using structured light

Toru Yoshizawa, Hiroo Fujita

Proceedings Volume 6000, 60000H (2005) https://doi.org/10.1117/12.631482

KEYWORDS: Liquid crystals, Phase shifting, Transmittance, Projection systems, 3D metrology, Modulation, Binary data, Time metrology, Glasses, Structured light

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Proceedings Article | 23 October 2003 Paper

Three-dimensional imaging using liquid crystal grating projection

Toru Yoshizawa, Hiroo Fujita, Yukitoshi Otani, Masayuki Yamamoto

Proceedings Volume 5202, (2003) https://doi.org/10.1117/12.505287

KEYWORDS: Liquid crystals, Phase shifting, 3D image processing, Modulation, Transmittance, Projection systems, 3D metrology, Binary data, CCD cameras, Eye

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Proceedings Article | 29 April 2003 Paper

Three-dimensional profilometry using liquid crystal grating

Hiroo Fujita, Ken Yamatan, Masayuki Yamamoto, Yukitoshi Otani, Akira Suguro, Shigeru Morokawa, Toru Yoshizawa

Proceedings Volume 5058, (2003) https://doi.org/10.1117/12.509410

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Proceedings Article | 18 October 2002 Paper

Three-dimensional surface profile measurement using a liquid crystal grating with a triangular intensity distribution

Hiroo Fujita, Akira Suguro, Toru Yoshizawa

Proceedings Volume 4902, (2002) https://doi.org/10.1117/12.467400

KEYWORDS: Liquid crystals, 3D image processing, CCD cameras, Image processing, Signal detection, Phase shift keying, Phase shifts, Measurement devices, Glasses, Photography

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Proceedings Article | 23 October 2001 Paper

High-resolution dimensional measurement apparatus using optical scale with different grating pitches

Hiroo Fujita

Proceedings Volume 4398, (2001) https://doi.org/10.1117/12.445539

KEYWORDS: Signal detection, Signal processing, Diffraction gratings, Semiconductor lasers, Optical testing, Collimation, Light sources, Signal generators, Sensors, Thallium

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Proceedings Article | 23 October 2001 Paper

Three-dimensional profilometry using hybrid grating projection

Toru Yoshizawa, Hiroshi Takahashi, Masayuki Yamamoto, Yukitoshi Otani, Hiroo Fujita

Proceedings Volume 4398, (2001) https://doi.org/10.1117/12.445552

KEYWORDS: Moire patterns, Binary data, Liquid crystals, Phase shifts, Transmittance, Prototyping, CCD cameras, Projection systems, Phase shifting, 3D metrology

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Proceedings Article | 11 November 1999 Paper

Three-dimensional surface profilometry using structured liquid crystal grating

Ken Yamatani, Hiroo Fujita, Masayuki Yamamoto, Akira Suguro, Yukitoshi Otani, Shigeru Morokawa, Toru Yoshizawa

Proceedings Volume 3782, (1999) https://doi.org/10.1117/12.369195

KEYWORDS: Liquid crystals, Phase shifting, Projection systems, CCD cameras, Phase measurement, Optical filters, Phase shifts, Glasses, 3D metrology, Crystals

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Proceedings Article | 2 August 1995 Paper

Lateral and vertical dimension measurements by using laser scanning microscopy including an optical heterodyne function

Hiroo Fujita

Proceedings Volume 2576, (1995) https://doi.org/10.1117/12.215590

KEYWORDS: Edge detection, Laser scanners, Heterodyning, Signal detection, Microscopy, Diffraction, Optical microscopy, Optical components, Laser beam diagnostics, Inspection

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Proceedings Article | 20 October 1992 Paper

Surface condition measurement using optical heterodyne method

Hiroo Fujita

Proceedings Volume 1720, (1992) https://doi.org/10.1117/12.132158

KEYWORDS: Heterodyning, Signal detection, Prisms, Surface roughness, Diffraction, Optical testing, Distance measurement, Reflection, Interferometry, Measurement devices

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Proceedings Article | 1 January 1991 Paper

Two-dimensional micropattern measurement using precision laser beam scanning

Hiroo Fujita

Proceedings Volume 1332, (1991) https://doi.org/10.1117/12.51094

KEYWORDS: Adaptive optics, Signal detection, Ferroelectric materials, Prisms, Scanners, Optical testing, Heterodyning, 3D scanning, Electrodes, Optical inspection

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Showing 5 of 10 publications

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