Open AccessSimulation and measurement of moiré patterns at finite distance
Author(s) -
Vladimir Saveljev,
Sung Kyu Kim
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.002163
Subject(s) - optics , moiré pattern , fourier transform , observer (physics) , physics , spatial frequency , ptychography , plane wave , wavenumber , plane (geometry) , refractive index , phase (matter) , diffraction , geometry , mathematics , quantum mechanics
The moiré effect was considered at a finite distance. Formulas for the wavenumber and phase of the visible moiré patterns were found with displacements of the observer and of gratings taken into account. The computer simulation and physical experiment confirm the theory. The method of measurement of the wavevectors of plane waves was proposed basing on the Radon and Fourier transformations.