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SD-OCT Base Unit Chapter 5: Imaging Artifacts
Rev E, November 7, 2018 Page 45
5.8. 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.
In the images below a schematic sample setup and the resulting OCT image are shown.
Figure 58 Schematic of a Setup to Show Distorsion from Refracting Media
Figure 59 Height Shift of OCT Image Through Refractive Media