SD-OCT Base Unit
Chapter 5: Imaging Artifacts
Page 48
MTN020880-D02
Image Distortion by Refractive Media
OCT images display path length differences in between reference arm length and sample arm length (distance
from the beam splitter to the scattering or reflecting object). These path lengths are optical path lengths,
calculated from the physical path length multiplied by the group refractive index.
See the images below for a schematic sample setup and the resulting OCT image.
Figure 59: Schematic of a Setup to Show Distortion from Refracting Media
Figure 60: Height Shift in OCT Image through Refractive Media
