Device for optical coherence tomography

摘要

A device for optical coherence tomography (OCT) is provided. The device includes a light source for generating a sample beam incident on a matter and a reference beam for creating interference with the sample beam; a spatial light modulator enabling a plurality of ramp patterns for controlling an incident angle of the sample beam; and a diffraction grating for transmitting only a first diffraction component of the reference beam; whereby an image of the matter within a medium is captured by generating an interference image formed by the interference between the sample beam and the reference beam.

主权项

1. A device for optical coherence tomography (OCT), comprising:
a light source for emitting light; a first beam splitter for separating the light emitted from the light source into a first light and a second light by transmitting or reflecting the light emitted; a spatial light modulator (SLM) for reflecting the first light emitted from the first beam splitter; a second beam splitter for reflecting the first light reflected by the spatial light modulator (SLM) and emitted at a matter and reflected by the matter; a piezoelectric transducer (PZT) for reflecting the second light emitted from the first beam splitter and controlling a travel distance of the second light; a third beam splitter for emitting the second light at a diffraction grating (DG) by reflecting the second light reflected by the piezoelectric transducer (PZT); the diffraction grating (DG) for transmitting only a first diffraction component of the second light emitted from the third beam splitter, and a camera for capturing an interference image between:
the first light reflected by the second beam splitter; andthe second light, with only the first diffraction component remaining, transmitted from the diffraction grating (DG); wherein an incident angle of the first light emitted at the matter is changed according to ramp pattern enabled in the spatial light modulator (SLM).