Measurement of surface shape and deformation by phase-shifting image digital holography

2002 ◽  
Author(s):  
Ichirou Yamaguchi ◽  
Jun-ichi Kato ◽  
Hirokazu Matsuzaki
Keyword(s):  
Digital Holography ◽  
Phase Shifting ◽  
Surface Shape

Determination of Phase Shift by Digital Holography

2019 ◽  
Vol 888 ◽  
pp. 43-46
Author(s):  
Yoshitaka Takahashi ◽  
Masatoshi Saito ◽  
Toru Nakajima ◽  
Masakazu Shingu
Keyword(s):  
Phase Shift ◽  
Noise Reduction ◽  
Digital Holography ◽  
High Accuracy ◽  
Measured Data ◽  
Phase Shifting ◽  
Surface Shape ◽  
Shape Measurement ◽  
Phase Shifting Interferometry

In phase shifting interferometry phase shift is applied by various ways, but applying it with high accuracy, especially by LD current modulation, is not easy. In order to determine the accurate phase shift a new method has been proposed that the value of LD current corresponding to π/2 phase shift can be determined by phase shifting digital holography. The measured data of standard in surface shape measurement were used for calibration, and the obtained value was confirmed to cause noise reduction and improvement of holographic reconstructed images in digital holography.

Surface Shape Measurement by Phase-Shifting Digital Holography

2001 ◽  
Vol 8 (2) ◽  
pp. 85-89 ◽  
Author(s):  
Ichirou Yamaguchi ◽  
Jun-ichi Kato ◽  
Sohgo Ohta
Keyword(s):  
Digital Holography ◽  
Phase Shifting ◽  
Surface Shape ◽  
Shape Measurement

Doppler phase-shifting digital holography and its application to surface shape measurement

2010 ◽  
Vol 35 (10) ◽  
pp. 1548 ◽  
Author(s):  
Yuichi Kikuchi ◽  
Daisuke Barada ◽  
Tomohiro Kiire ◽  
Toyohiko Yatagai
Keyword(s):  
Digital Holography ◽  
Phase Shifting ◽  
Surface Shape ◽  
Shape Measurement

Surface Shape Measurement by Dual-wavelength Phase-shifting Digital Holography

Fringe 2005 ◽  
2006 ◽  
pp. 396-403 ◽  
Author(s):  
Ichirou Yamaguchi ◽  
Shinji Yamashita ◽  
Masayuki Yokota
Keyword(s):  
Digital Holography ◽  
Phase Shifting ◽  
Surface Shape ◽  
Dual Wavelength ◽  
Shape Measurement

Measurement of Surface Shape and Position by Phase-Shifting Digital Holography Using Dual Wavelengths

2006 ◽  
Vol 3 (2) ◽  
pp. 98-105 ◽  
Author(s):  
Ichirou Yamaguchi ◽  
Takashi Ida ◽  
Masayuki Yokota
Keyword(s):  
Digital Holography ◽  
Phase Shifting ◽  
Surface Shape

scholarly journals Measurement of Surface Shape and Position by Phase-Shifting Digital Holography

Strain ◽  
2008 ◽  
Vol 44 (5) ◽  
pp. 349-356 ◽  
Author(s):  
I. Yamaguchi ◽  
T. Ida ◽  
M. Yokota
Keyword(s):  
Digital Holography ◽  
Phase Shifting ◽  
Surface Shape

Surface shape measurement by phase-shifting digital holography with a wavelength shift

2006 ◽  
Vol 45 (29) ◽  
pp. 7610 ◽  
Author(s):  
Ichirou Yamaguchi ◽  
Takashi Ida ◽  
Masayuki Yokota ◽  
Kouji Yamashita
Keyword(s):  
Digital Holography ◽  
Phase Shifting ◽  
Surface Shape ◽  
Shape Measurement ◽  
Wavelength Shift
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