Method and apparatus for automated spectral calibration

Details Method and apparatus for automated spectral calibration Method and apparatus for automated spectral calibration

2008-11-18

2010-10-05

Porta, David P (Department: 2884)

Optics: measuring and testing

By dispersed light spectroscopy

With raman type light scattering

Reexamination Certificate

active

07808634

ABSTRACT:
A method and apparatus for automated spectral calibration of a spectroscopy device. In one embodiment, the disclosure relates to a method for simultaneous calibration and spectral imaging of a sample by: simultaneously illuminating the sample and a calibrant with a plurality of illuminating photons; receiving, at the spectrometer, a first plurality of photons collected from the sample and a second plurality of photons collected from the calibrant; forming a calibrant spectrum from the first plurality of collected photons and a sample spectrum from the second plurality of collected photons; comparing the calibrant spectrum with a reference spectrum of the calibrant to determine a wavelength-shift in the calibrant spectrum; applying the wavelength-shift to the sample spectrum to obtain a calibrated sample spectrum; and forming a spatially accurate wavelength resolved image of the sample from the first plurality of collected photons.

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