Abstract

The generalized principle of moiré interferometry is explained theoretically. As a result it becomes clear that the application of incoherent moiré techniques to a two-beam interferometer enables measurement of wavefront deformation that is given by an object at two different times, but it cannot reduce distortion in a viewing system. Experimental results of electronic moiré interferometry are presented. They show that the principle is correct, the electronic techniques are superior to photography for the moiré interferometry, and a standard video system shows satisfactory performance for measurement of a transparent-type phase object.

© 1979 Optical Society of America

Moiré interferometry with white light

Daniel Post
Appl. Opt. 18(24) 4163-4167 (1979)

Real-time optical differentiation for moire interferometry

Krzysztof Patorski, Daniel Post, Robert Czarnek, and Yifan Guo
Appl. Opt. 26(10) 1977-1982 (1987)

Moiré interferometry strain measurements in elastic thin membranes

R. D. Flack, J. G. Thacker, and J. G. Dixon
Appl. Opt. 18(22) 3841-3846 (1979)

Optical fringe multiplication in moiré interferometry

Xinlin Qing, Yuwei Qin, and Fulong Dai
Appl. Opt. 34(31) 7291-7294 (1995)

Electronic processing of moiré fringes: application to moiré topography and comparison with photogrammetry

J. C. Perrin and A. Thomas
Appl. Opt. 18(4) 563-574 (1979)