A summary of the main known forms of moiré fringes for visual metrological applications is given. To observe and track displacements of a moving fringe in a conventional moiré system presents certain difficulties, as the individual fringes have no distinctive character. New types of moiré fringes were found and are discussed, where a recognizable unique fringe indicates an also unique position of a grating, displaced relative to its stationary counterpart.
© 1964 Optical Society of America
Original Manuscript: July 30, 1963
Published: May 1, 1964
Leslie O. Vargady, "Moiré Fringes as Visual Position Indicators," Appl. Opt. 3, 631-636 (1964)