Moiré deflectometry
= Moiré deflectometry
{wiki=Moiré_deflectometry}
Moiré deflectometry is an optical measurement technique used to measure surface deformations and profiles with high precision. It is based on the moiré effect, which occurs when two patterns (usually grids or stripes) are overlaid with a slight misalignment or difference in scale, resulting in an interference pattern that can reveal subtle variations in surface shapes or displacements.