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Proceedings Paper

Talbot moire deflectrometry with direct spatial reconstruction of optical phase
Author(s): Angela Jianu; Adrian Petris; Carmen Popa; Dragos Popa; Valentin I. Vlad
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Paper Abstract

Improvements in Talbot-moire deflectometry are presented. A Talbot-moire interferometer, using a laser diode as light source, a single grating and a CCD camera, placed in one of the Talbot planes, was set-up. The computer yields a moire pattern by mixing the acquired Talbot image of the first grating with the reference generated by computer or stored as an undisturbed external grating Talbot image. For moire pattern processing, direct spatial reconstruction of optical phase, in spatial and Fourier domains, implemented in a high-level image processing language (IDLTM), was employed. The theoretical limit of the relative error of Talbot-moire deflectometry was verified by measuring the focal length of a lenticular system with controlled-focal- length.

Paper Details

Date Published: 2 July 1998
PDF: 5 pages
Proc. SPIE 3405, ROMOPTO '97: Fifth Conference on Optics, (2 July 1998); doi: 10.1117/12.312802
Show Author Affiliations
Angela Jianu, National Institute for Laser, Plasma, and Radiation Physics (Romania)
Adrian Petris, National Institute for Laser, Plasma, and Radiation Physics (Romania)
Carmen Popa, Politehnica Univ. of Bucharest (Romania)
Dragos Popa, Politehnica Univ. of Bucharest (Romania)
Valentin I. Vlad, National Institute for Laser, Plasma, and Radiation Physics (Romania)


Published in SPIE Proceedings Vol. 3405:
ROMOPTO '97: Fifth Conference on Optics
Valentin I. Vlad; Dan C. Dumitras, Editor(s)

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