Device for optical coherence tomography

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;
• and
• the 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).