System for optical coherence tomography

The present invention relates to an optical coherence tomography system with an interferometer (20), the interferometer (20) having a beam splitter (24), the reflector (25), irradiating the arm (21), a sample arm (22) and reference arm (23). In order to ensure high image quality, provided with means for illuminating the sample (1), with the numerical aperture, in particular, the irradiation angle of divergence of the vertebral body irradiation optical assembly (41,46,48) and a sample (1) imaging, with Numerical aperture, in particular an optical component sample receiving angle (41, 47), wherein the numerical aperture of the sample (1) of the irradiation, in particular irradiation vertebral divergence angle is smaller than for samples (1) the value of the image aperture, especially acceptance angle.