OPTICAL COHERENCE TOMOGRAPHY METHOD AND SYSTEM

摘要

The present invention relates to the field of instruments for imaging internal structures of the human body, and in particular of the eye. More specifically it relates to an optimized method and an optical coherence tomography system thereof.

主权项

1. A optical coherence tomography system comprising: a broadband light radiation source (LBS); a reference optical arm (RA); movable scanning means (M) for scanning a sample, adapted to receive the light radiation emitted by said source to illuminate a portion of the sample corresponding to a position of the scanning means (M), generating a radiation hitting a surface of the same sample, and to collect the backscattered radiation from the sample; a signal detection arm (MA) with at least one sensor adapted to reconstruct the spectrum of the signal resulting from the recombination of the radiation collected by said reference arm (RA) and by said scanning means (M); beam splitter means adapted to permit the passage of the radiation from the source (LBS) to the scanning means and to the reference arm (RA), and from these to the detection arm (MA); and a control and processing unit (CUP) adapted to control the above mechanical and electronic components, to transform said spectrum in a reflectivity profile of the illuminated sample portion, and to generate an image of the sample by juxtaposing a number of profiles each corresponding to a sample portion and obtained further to a displacement of said scanning means; wherein said control means are configured such that the intensity of the signal collected by said scanning means (M) is made constant upon variation of the angle between the radiation that hits said sample surface and the normal to the same surface at the hitting point.