G - Physics – 01 – B
Patent
G - Physics
01
B
G01B 9/02 (2006.01) A61B 3/12 (2006.01)
Patent
CA 2553743
The invention relates to a device, for measuring the contrast of fringes in a Michelson interferometer at full field, comprising a Wollaston prism for diverting two perpendicular incident polarisations into two different emergent directions, said diverting means being arranged within the interferometer as substitute for a single polariser. The device is of application to a Michelson interferometer used in an OCT tomographical system and comprising means for obtaining interferometric contrast without use of a modulation technique or synchronous detection methods.
Dispositif pour mesurer le contraste des franges dans un interféromètre de Michelson en plein champ, comprenant un prisme de Wollaston pour dévier deux polarisations perpendiculaires entrantes dans deux directions émergeantes différentes, ces moyens de déviation étant disposés au sein de l'interféromètre en substitution d'un polariseur unique. Ce dispositif est appliqué dans un interféromètre de Michelson mis en oeuvre dans un système de tomographie OCT et comprenant des moyens d'extraction du contraste interférométrique n'employant aucune technique de modulation ni des méthodes de détection synchrone.
Lacombe Francois
Lafaille David
Centre National de La Recherche Scientifique (cnrs)
Mauna Kea Technologies
Observatoire de Paris
Smart & Biggar
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