System and method for optical coherence tomography

摘要

The present invention relates to a device and a corresponding method having a light source (20) for emitting light, an interferometer (10), into which light emitted by the light source (20) is injected, for irradiating a sample (1) with light, and a, in particular spatially resolving, detector (40) for detecting interference patterns obtained by superimposing the light reflected from the sample (1) with a partial beam of the light injected into the interferometer (10) which is reflected at a reference mirror (16) of the interferometer (10).;In order to obtain OCT images in the simplest way possible and with the highest possible resolution and image quality, the light source (20) comprises a radiation source (21) for generating spatially incoherent light, and an optical filter (22) with a bell-shaped or Gaussian-shaped spectral filter characteristic for filtering the light generated by the radiation source (21).

主权项

1. A system for optical coherence tomography, the system comprising:
a light source configured to emit light; an interferometer, into which the light emitted by the light source is injected, configured to irradiate a sample with light; and a detector configured to detect light reflected from the sample; wherein the light source includes a radiation source configured to generate spatially incoherent light and an optical filter having a bell-shaped or Gaussian-shaped spectral filter characteristic configured to filter the light generated by the radiation source; the filtered light emitted by the light source has a spectrum, a Fourier transform of which has a maximum and one or more secondary maxima a height of which is less than 5% of a height of the maximum; and the light generated by the radiation source has a spectrum with a maximum intensity value and a minimum intensity value, and a difference between the maximum intensity value and the minimum intensity value in a relevant spectral range corresponds to at most 25% of the maximum intensity value.