Abstract

Using geometrical optics, an oblique-shadow method is shown to generate moiré patterns, which under specific conditions can be interpreted as contour lines of the surface. The oblique-shadow method consists of illuminating a viewing grid with equal spaced parallel lines. The light can be either a point source or parallel light, the observation point can be either at finite distance or at infinity. Conditions for which moiré patterns become contour lines of the surface are given.

© 1975 Optical Society of America

Moiré Topography

Hiroshi Takasaki
Appl. Opt. 12(4) 845-850 (1973)

Intensity-modulated moiré topography

Cunwei Lu and Seiji Inokuchi
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Moiré topography by slit beam scanning

Seung-Woo Kim and Hyun-Goo Park
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Moiré Topography

H. Takasaki
Appl. Opt. 9(6) 1467-1472 (1970)

Applications of optical logic-operated moiré in moiré topography and deflectometry

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