Calibration system for spectrographic analyzing instruments
US5798526A · kind A · utility
12Cited by
12References
11Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 24, 1997 |
| Grant date | Aug 25, 1998 |
| Priority date | — |
| Expiry date | Jan 24, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2003/2866
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a system for analyzing materials by near infrared analysis, a library of absorbance spectra from sample materials is stored in computer storage. The absorbance spectra of an unknown material is measured and is correlated with the library spectra to select those library spectra which most closely match the spectrum of the unknown material. The selected library spectra are used to determine, by least squares convergence, or by multiple regression, coefficients in equations relating measurable properties of the unknown material to absorbance measurements made on the unknown material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.