Moire Fringes

A pattern formed by the interference between two regular sets of divisions.

Parallel Pattern
where
dm = Moire fringe spacing [m]
d1 = grating 1 spacing [m]
d2 = grating 2 spacing [m]

Rotated Pattern
where
dm = Moire fringe spacing [m]
d = grating spacing [m]
θ = relative rotation angle between gratings where -π/2≤θπ/2

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Subjects: Optics Physics