Spectrometer with wavelength calibration

Details Spectrometer with wavelength calibration Spectrometer with wavelength calibration

1996-12-03

1998-07-07

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

356333, G01J 318

Patent

active

057777330

ABSTRACT:
The present invention refers to a spectrometer device comprising a monochromator means, a light-measuring means receiving light from said monochromator means, and a calibration means comprising a calibration light source. The present invention provides a new spectrometer device whose light-measuring means comprises a plurality of light-measuring elements in an array extending in the direction of dispersion of the monochromator means, and whose calibration means carries out, on the basis of a spectral light measurement with the aid of the calibration light source, an association between the light-measuring elements and the wavelengths of the spectral light which is adapted to be detected by the respective light-measuring elements. These measures substantially facilitate the calibration and especially the automatic execution of said calibration, if desired simultaneously with a spectra measurement, and they improve the accuracy of the calibration.

REFERENCES:
patent: 4191473 (1980-03-01), Hansch
patent: 4531836 (1985-07-01), Smith, Jr. et al.
patent: 4636074 (1987-01-01), Levy et al.
patent: 4692883 (1987-09-01), Nelson et al.
patent: 4893259 (1990-01-01), Grosser et al.
Tseng C-H et al "Wave Length Calibration of a Multi-Channel Spectrometer" in applied spectrosocpy, vol. 47, No. 11, Nov. 11, 1993.

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