Abstract

The effect of using a sinusoidal grating instead of a Ronchi ruling as the object grating in moiré deflectometry is discussed and demonstrated. The method reduces the diffraction blur, which hinders the use of the conventional moiré deflectometer for objects of locally varying focal lengths. The technique combines most of the advantages of moiré deflectometry and shearing interferometry.

© 1985 Optical Society of America

Diffraction effects in moiré deflectometry

E. Keren and O. Kafri
J. Opt. Soc. Am. A 2(2) 111-120 (1985)

Electronic heterodyne readout of fringes in moiré deflectometry

J. Stricker
Opt. Lett. 10(6) 247-249 (1985)

Infinite fringe moire deflectometry

O. Kafri, A. Livnat, and E. Keren
Appl. Opt. 21(21) 3884-3886 (1982)

Immunity to shock and vibration in moire deflectometry

Eliezer Keren
Appl. Opt. 24(18) 3028-3031 (1985)

Phase object microscopy using moire deflectometry

J. Krasinski, D. F. Heller, and O. Kafri
Appl. Opt. 24(18) 3032-3036 (1985)