Patent ID: 7950801

Claim:
A device for measuring the contrast of fringes in a full-field Michelson interferometer having at least means for separating a source beam into one reference arm and one measurement arm, the reference arm and the measurement arm co-operating with an output arm, which receives a reference signal and a measurement signal from the separating means, in order to produce an optical coherence tomography (OCT) system, said device comprising: means for deflecting two incoming signals issued from the reference arm and the measurement arm of the Michelson interferometer having perpendicular polarizations in at least two different emerging directions and a beam detector, said means for deflecting being arranged between the means for separating and said beam detector within the output arm of the full-field Michelson interferometer said means for deflecting (W) being oriented so that at least two interferometric images of an observed point are formed through an interference of projection of the reference signal and the measurement signal on an axis of said means for deflecting and respectively an interference of projection of the reference signal and the measurement signal on another axis of said means for deflecting (W).