US 11,892,291 B2
Systems and methods improving optical coherence tomography (OCT) image resolution using k-linearization (KL) and dispersion correction (DC)
Chih-Hao Liu, Chelmsford, MA (US); and Steven M. Stromski, Windham, NH (US)
Assigned to LightLab Imaging, Inc., Westford, MA (US)
Filed by LightLab Imaging, Inc., Westford, MA (US)
Filed on Feb. 8, 2022, as Appl. No. 17/666,726.
Claims priority of provisional application 63/146,904, filed on Feb. 8, 2021.
Prior Publication US 2022/0260360 A1, Aug. 18, 2022
Int. Cl. G01B 9/02 (2022.01); G01B 9/02091 (2022.01); G01B 9/02055 (2022.01)
CPC G01B 9/02091 (2013.01) [G01B 9/02064 (2013.01); G01B 9/02084 (2013.01); G01B 2210/58 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method of processing an optical signal, the method comprising:
calibrating an optical system, the calibration comprising:
acquiring, by one or more processors, at least a first mirror measurement and a second mirror measurement, the first and second mirror measurement being collected from either side of a zero-delay line;
obtaining, by the one or more processors, an amplitude and phase for the first mirror measurement and the second mirror measurement;
resampling, at least one of the first mirror measurement and the second mirror measurement to be at least one of: (i) in linear wavenumber (k) space or (ii) linear wavelength or (iii) linear time, to generate a resampled mirror measurement;
performing spectral flattening on at least one mirror measurement by using an envelope calculated from a specific mirror measurement; and
calculating, using a function, an optimized fit for the resampled mirror measurement.