Electronically scanned optical coherence tomography with...

A - Human Necessities – 61 – B

Patent

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A61B 5/00 (2006.01) G01B 9/02 (2006.01)

Patent

CA 2449308

An improved Optical Coherence Domain Reflectometry (OCDR) system is provided. One embodiment of this OCDR system outputs a detector signal carrying image depth information on multiple modulation frequencies, where each modulation frequency corresponds to a different image depth. The image depth information from the detector signal may be resolved by tuning to the desired modulation frequency. Another system for imaging body tissue uses multiple frequency modulators such that the light beam does not travel from an optical fiber to free space.

L'invention concerne un système de réflectométrie à interférence cohérence optique-domaine (OCDR) amélioré. Dans un mode de réalisation, ce système émet un signal de détecteur portant une information de profondeur d'image sur des fréquences de modulation multiples, chaque fréquence de modulation correspondant à une profondeur d'image différente. L'information de profondeur d'image donnée par le signal du détecteur peut être résolue par syntonisation sur la fréquence de modulation désirée. Un autre système d'imagerie pour tissus du corps fait appel à des modulateurs de fréquences multiples tels que le faisceau lumineux ne passe pas d'une fibre optique à l'espace libre.

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