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1. (WO2018089207) SIGNAL PROCESSING FOR TUNABLE FABRY-PEROT INTERFEROMETER BASED HYPERSPECTRAL IMAGING

Pub. No.:    WO/2018/089207    International Application No.:    PCT/US2017/058554
Publication Date: Fri May 18 01:59:59 CEST 2018 International Filing Date: Fri Oct 27 01:59:59 CEST 2017
IPC: G01J 3/26
G01J 3/10
Applicants: TRUTAG TECHNOLOGIES, INC.
Inventors: NISSIM, Ron
LEARMONTH, Timothy
HSU, Mark
FINKELSTEIN, Hod
Title: SIGNAL PROCESSING FOR TUNABLE FABRY-PEROT INTERFEROMETER BASED HYPERSPECTRAL IMAGING
Abstract:
A system for determining a calibrated spectral measurement includes a tunable Fabry-Perot etalon, a detector, and a processor. The tunable Fabry-Perot etalon has a settable gap. The detector measures light intensity. The processor is configured to determine the calibrated spectral measurement. The calibrated spectral measurement is based at least in part on a measurement set of detected light intensities for a plurality of settable gaps and a reconstruction matrix. The reconstruction matrix is based at least in part on calibration measurements. For a calibration measurement, a settable gap is selected and a set of input monochromatic source wavelengths is used to measure responses at a detector after transmission through the Fabry-Perot etalon. Each input monochromatic source wavelength is also measured using a radiometer to scale detector measurements.