Spectral filtering of k-clock signal in OCT system and method
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United States of America Patent
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Apr 12, 2016
Grant Date -
Jul 2, 2015
app pub date -
Dec 30, 2013
filing date -
Dec 30, 2013
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Abstract
A system and method for spectral filtering of a k-clock signal in a swept-source Optical Coherence Tomography (“OCT”) system to remove artifacts in the k-clock signal. The system synchronizes sampling of the k-clock and interference signals generated from scanning a sample. Using a filtered k-clock signal, the system resamples an interference dataset of the interference signals. The system then performs Fourier transform based processing upon the resampled interference dataset to yield axial depth images of the sample. The system preferably performs the reconstruction, resampling, and associated Fourier-Domain signal processing in software via a Field Programmable Gate Array (“FPGA”) of a rendering system.
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