Optical Phase Shifting Interferometry - an overview
Phase-shifting interferometry is a crucial technique for optical surface profiling and three-dimensional shape measurement, which exhibits the great advantages of noncontact, nondestructive, high sensitivity, and accuracy.
(PDF) Phase Shifting Interferometry - ResearchGate
2011年1月1日 · Phase shifting interferometry is a well-established technique for areal surface characterisation that relies on digitisation of interference data acquired during a controlled phase shift,...
Below we will discuss the basic concepts of phase-shifting interferometry followed by discussion and derivation of the basic algo-rithms, discussion of error sources, and a description of the phase-shifters required.
Phase-Shifting Interferometry - University of Arizona
This paper discusses two single-shot interferometric techniques for reducing the sensitivity of an optical test to vibration; simultaneous phase-shifting interferometry and a special form of spatial carrier interferometry utilizing a micropolarizer phase-shifting array.
Calculate a phase for each set from algorithm, and then average phases. Average Numerator and Denominator, and then calculate phase. Probably the most serious impediment to wider use of PSI is its sensitivity to external vibrations. Vibrations cause …
Phase-shifting interferometry is a powerful means of analyzing interferograms to recover the phase information. Traditionally, interferograms were measured by locating the center of a fringe and then tracing along the fringe.
Phase Shifting Interferometry - SpringerLink
Phase shifting interferometry is a well-established technique for areal surface characterisation that relies on digitisation of interference data acquired during a controlled phase shift, most often introduced by controlled mechanical oscillation of an interference objective.
Phase shifting interferometry is a well-established technique surface characterisation that relies on digitisation of interference data during a controlled phase shift, most often introduced by controlled oscillation of an interference objective.
2019年5月16日 · In the recording process of phase-shifting interferometry, intensity fluctuation caused by light source instability may occur and then introduce amplitude and phase errors to the reconstructed object wavefront. A simple direct algorithm of digital data processing to …
Phase Shifting Interferometry - Zygo Corporation
2011年1月1日 · Phase shifting interferometry is a well-established technique for areal surface characterisation that relies on digitisation of interference data acquired during a controlled phase shift, most often introduced by controlled mechanical oscillation of an interference objective.