OPTICAL COHERENCE TOMOGRAPHY ANALYSIS METHOD AND APPARATUS

The present invention relates to an optical coherence tomography analysis method, comprising: Providing a Swept Source Optical Coherence Tomography system (SS-OCT), the SS-OCT system including: ° a light source, tunable over a spectral band, that generates a coherent light signal; ° an optical interferometer for dividing the coherent light signal into a reference arm leading to a reference reflector and a sample arm leading to a sample; ° an optical element to selectively direct a sample light signal exiting the sample arm to a specific portion of the sample, so that for each selection in the optical element a different specific portion of the sample is illuminated; ° an optical detector for detecting an interference signal generated by a combination of reference and sample returning signals from the reference arm and from the sample arm, reflected by the reference reflector and the sample, respectively; Wherein, for the same selection operated at the optical element level illuminating a specific portion of the sample, the method further comprises: ° sweeping the light source for a time interval ΔΤ, so that a wavelength of the coherent light signal, leading to the sample light signal illuminating the specific portion of the sample, changes from a minimum wavelength to a maximum wavelength and wherein the wavelength of the coherent light signal reaches the same value between the minimum wavelength to the maximum wavelength at least twice during the sweeping; ° detecting the interference signal generated by the sweeping, including the interference signal generated by the sample returning signals of the at least two coherent light signals having the same wavelength; ° elaborating the detected interference signal generated by the sweeping, including the detected interference signal generated by the sample returning signals of the at least two coherent light signals having the same wavelength, for obtaining an OCT image of the specific portion of the sample. La présente invention concerne un procédé d'analyse de tomographie par cohérence optique comprenant : la fourniture d'un système de tomographie par cohérence optique à source balayée (SS-OCT), le système SS-OCT comprenant : ° une source de lumière, réglable sur une bande spectrale, qui génère un signal de lumière cohérente ; ° un interféromètre optique destiné à diviser le signal de lumière cohérente en un bras de référence conduisant à un réflecteur de référence et un bras d'échantillon conduisant à un éch