Patent ID: 7583378

Claim:
A method for calibrating a spectrometer device, comprising: a. activating a calibration light source to emit light that is coupled to a light dispersing element; b. detecting dispersed light from the light dispersing element to produce first spectrum data; c. modifying a dispersion curve for the light dispersing element based on said first spectrum data to produce a modified dispersion curve; d. detecting dispersed light produced as a result of activation of a light source that causes Raman scattering to produce second spectrum data; e. determining spectral line peak positions for a first chemical and for a second chemical in said second spectrum data; and f. computing calibration data for the spectrometer device from the spectral line peak positions for said first chemical, the spectral line peak positions for said second chemical, the known Raman wavenumber shifts for said first chemical and for said second chemical and said modified dispersion curve.