Standardizing a spectrometric instrument

Details Standardizing a spectrometric instrument Standardizing a spectrometric instrument

1997-12-18

2000-04-11

Hoff, Marc S.

Data processing: measuring, calibrating, or testing

Calibration or correction system

Sensor or transducer

356319, 356325, 356328, 702 22, G01R 3500

Patent

active

060497629

ABSTRACT:
Standardization is achieved for FTIR spectrometric instruments that effect an intrinsic distortion in spectral information, the distortion being associated with an aperture size. An idealized function of spectral line shape is specified. With a small calibration aperture, spectral data is obtained for a basic sample having known "true" spectral data, and standard spectral data also is obtained for a standard sample. With a larger, normal sized aperture, standard spectral data is obtained again for the calibration sample. A transformation factor, that is a function of this data and the standardized function, is applied to spectral data for test samples to effect standardized information. In another embodiment, the standard sample has known true spectral data, and the basic sample is omitted. In either case, the transformation factor is applied to the sample data in logarithm form, the antilogarithm of the result effects the standardized information.

REFERENCES:
patent: 5303165 (1994-04-01), Ganz et al.
patent: 5545895 (1996-08-01), Wright et al.
patent: 5710713 (1998-01-01), Wright et al.
patent: 5850623 (1998-12-01), Carman, Jr. et al.

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