Topic
Moiré pattern
About: Moiré pattern is a research topic. Over the lifetime, 1917 publications have been published within this topic receiving 27176 citations. The topic is also known as: moiré fringes & moire pattern.
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25 Dec 2013
TL;DR: In this paper, a color CCD micro moire method for surface deformation measurement is presented, where a standard holographic grating is used for being manufactured into a high-elastic thin film grating, a surface test piece grating was formed after the thin film was adhered to the surface of a surface to be measured, and a Bayer optical filter in front of a target surface was treated as a reference grating.
Abstract: The invention discloses a color CCD micro moire method for surface deformation measurement, and belongs to the technical field of experimental mechanics. The color CCD micro moire method for surface deformation measurement is technically characterized in that a standard holographic grating is used for being manufactured into a high-elastic thin film grating, a surface test piece grating is formed after the thin film grating is adhered to the surface of a surface test piece to be measured, a Bayer optical filter in front of a target surface of a color CCD camera is treated as a reference grating, color moire fringes can be formed when the pitch of the image of the surface test piece grating is matched with six lines of units of the Bayer optical filter in the color CCD camera, and a deformation field of the surface test piece is obtained after calculation. The color CCD micro moire method is applied to surface deformation measurement for the first time, therefore, the quality of the CCD moire fringes is improved, and the application range of the moire method is widened. Compared with a strain gage method, the color CCD micro moire method has the advantages that non-contact continuous measurement can be achieved, the measurement area can be smaller, and the efficiency is higher.
2 citations
TL;DR: In this article, the phase mismatch produced in sectioned holographic moire-like patterns is described by the controlled superposition of two sinusoidal phase gratings made by dynamic holographic process.
2 citations
16 May 2021
2 citations
16 Jan 1989
TL;DR: In this paper, the process of moire interferometry is given mathematical description in terms of the classical theory of optical interference, and the governing relationship between displacement and fringe order is derived.
Abstract: The process of moire interferometry is given mathematical description in terms of the classical theory of optical interference. The governing relationship between displacement and fringe order is derived, and the analysis is extended to cover carrier patterns, double exposure methods, and initial fringe pattern elimination. Various processes for obtaining patterns of displacement derivatives are also described mathematically.
2 citations
15 Jun 2015
TL;DR: Theoretical and experimental investigation of surface plasmon resonance (SPR) assisted radially sheared interference-imaging using a birefringent lens having two longitudinally shifted focal points has been reported.
Abstract: Theoretical and experimental investigation of surface plasmon resonance (SPR) assisted radially sheared interference
imaging using a birefringent lens having two longitudinally shifted focal points has been reported As Wolllaston prism
can introduce lateral shear between the two mutual orthogonal polarizations of radially sheared pattern, Moire-like
pattern is produced at overlapping region of those patterns Brief theory and experimental demonstration of coherent and
incoherent Moire fringe generation has been done Surface plasmon resonance (SPR) mediated Moire pattern has been
demonstrated which can be further utilized for other nanophotonic applications
2 citations