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1. (WO2017148463) METHOD FOR SIGNAL PROCESSING IN OPTICAL COHERENCE TOMOGRAPHY BY MEANS OF A TUNABLE LIGHT SOURCE

Pub. No.:    WO/2017/148463    International Application No.:    PCT/DE2017/100026
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Fri Jan 20 00:59:59 CET 2017
IPC: G01B 9/02
Applicants: HEIDELBERG ENGINEERING GMBH
Inventors: MARTENSEN, Björn
FRITZ, Andreas
Title: METHOD FOR SIGNAL PROCESSING IN OPTICAL COHERENCE TOMOGRAPHY BY MEANS OF A TUNABLE LIGHT SOURCE
Abstract:
The invention relates to a method for signal processing in optical coherence tomography by means of a tunable light source (swept source), comprising the following steps: tuning the light source and sensing a signal intensity of the light source in linear dependence on the respective wave number (k) of the tunable light source and producing a signal intensity distribution in dependence on k; applying a window function to the sensed signal intensity distribution and producing a weighted signal intensity distribution; and applying a fast Fourier transform (FFT) to the weighted signal intensity distribution; and characterized in that, in the tuning of the light source, the tuned frequency spectrum is limited to a passband of the window function.