Three-dimensional displacement measurement for diffuse object using phase-shifting digital holography with polarization imaging camera

Phase-shifting digital holography can be used for displacement measurement instead of strain gauge. Our research group is developing the measurement equipment for phase-shifting digital holography. Generally, in the measurement equipment, piezo stages are used as phaseshifting devices. But the piezo stage is expensive. Cheaper and smaller phase-shifting device is required in order to put the measurement equipment into practical use. In this paper, we, therefore, propose a phase-shifting device using the deflection of a cantilever and we verify whether this phase-shifting device can be usedfor digital holography.

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OS10F070 Optical Cryptography Using a Three-Dimensional Space-Based Strategy and Phase-Shifting Digital Holography

The Abstracts of ATEM International Conference on Advanced Technology in Experimental Mechanics Asian Conference on Experimental Mechanics ◽

10.1299/jsmeatem.2011.10._os10f070- ◽

2011 ◽

Vol 2011.10 (0) ◽

pp. _OS10F070--_OS10F070-

Author(s):

Wen CHEN ◽

Xudong CHEN

Keyword(s):

Digital Holography ◽

Dimensional Space ◽

Three Dimensional ◽

Phase Shifting ◽

Three Dimensional Space

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Parallel phase-shifting digital holography system using dual polarization-imaging cameras for 3D imaging of transparent dynamic object

Imaging and Applied Optics 2016 ◽

10.1364/3d.2016.jw4a.13 ◽

2016 ◽

Author(s):

Yasuhiro Awatsuji ◽

Yexin Wang ◽

Peng Xia ◽

Takashi Kakue ◽

Kenzo Nishio ◽

...

Keyword(s):

Digital Holography ◽

3D Imaging ◽

Phase Shifting ◽

Dynamic Object ◽

Dual Polarization ◽

Polarization Imaging

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Phase-Shifting Method with Unknown Intervals in Phase-Shifting Digital Holography

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.3-4.211 ◽

2006 ◽

Vol 3-4 ◽

pp. 211-216

Author(s):

T. Kita ◽

Yoshiharu Morimoto ◽

Motoharu Fujigaki ◽

Toru Matui

Keyword(s):

Phase Shift ◽

Intensity Distribution ◽

Digital Holography ◽

Phase Distribution ◽

Reference Beam ◽

Spherical Wave ◽

High Accuracy ◽

Displacement Measurement ◽

Phase Shifting ◽

Phase Shifting Method

Displacement measurement can be performed with high accuracy using phase-shifting method. In phase-shifting method, it is often used four steps of phase-shifting for one cycle. In conventional method, to measure the displacement of an object by an interferometer, the phase of a reference beam should be shifted by every π/2 in the four-step phase-shifting. In this paper, a phase-shifting method with unknown intervals is proposed. This method does not need to shift a phase by every π/2. It can detect an intensity distribution and a phase distribution from five fringe images with equal intervals even if the phase-shift amount is unknown. Using this method, we propose a displacement measurement of phase-shifting digital holographic interferometry using spherical wave as reference wave.

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