Linear optical coherence tomography system with a downconverted fringe pattern.
Linear optical coherence tomography (LOCT) systems are a simple and robust alternative to time-domain optical coherence tomography systems, but a detector with approximately 10(4) pixels is needed for an imaging depth of 2 mm. We present a new system for LOCT with a special mask attached to the image sensor. The mask essentially performs a downconversion of the spatial frequencies by multiplication with a second spatial frequency. This reduces the fringe frequency of the optical coherence tomography signal so that the signal can be sampled with fewer pixels.
Koch
Peter
P
Medizinisches Laserzentrum Lübeck, Peter-Monnik-Weg, Lübeck, Germany. koch@mll.mu-luebeck.de
Hüttmann
Gereon
G
Schleiermacher
Hansfrieder
H
Eichholz
Jörge
J
Koch
Edmund
E
D004867:Equipment Design; D019544:Equipment Failure Analysis; D005240:Feasibility Studies; D007089:Image Enhancement / Q000295:instrumentation* / Q000379:methods*; D012031:Refractometry; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D041623:Tomography, Optical Coherence / Q000295:instrumentation* / Q000379:methods*