CA2212358A1 - A method for standardizing a spectrometer - Google Patents

A method for standardizing a spectrometer

Info

Publication number
CA2212358A1
CA2212358A1 CA002212358A CA2212358A CA2212358A1 CA 2212358 A1 CA2212358 A1 CA 2212358A1 CA 002212358 A CA002212358 A CA 002212358A CA 2212358 A CA2212358 A CA 2212358A CA 2212358 A1 CA2212358 A1 CA 2212358A1
Authority
CA
Canada
Prior art keywords
spectrometer
sample
standardization
pattern
optical spectrum
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002212358A
Other languages
French (fr)
Other versions
CA2212358C (en
Inventor
Hans Villemoes Andersen
Lisa Kjaer
Per Waaben Hansen
Carsten Ridder
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
N Foss Electric AS
Original Assignee
Foss Electric A/S
Hans Villemoes Andersen
Lisa Kjaer
Per Waaben Hansen
Carsten Ridder
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Foss Electric A/S, Hans Villemoes Andersen, Lisa Kjaer, Per Waaben Hansen, Carsten Ridder filed Critical Foss Electric A/S
Publication of CA2212358A1 publication Critical patent/CA2212358A1/en
Application granted granted Critical
Publication of CA2212358C publication Critical patent/CA2212358C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/28—Investigating the spectrum
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/28—Investigating the spectrum
    • G01J3/45—Interferometric spectrometry
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
    • G01N21/274—Calibration, base line adjustment, drift correction

Abstract

A method for standardizing a spectrometer generating an optical spectrum from a sample, comprising generating at least one optical spectrum from at least one standardization sample each having a chemical composition resulting in the optical spectrum showing a characteristic pattern in a predetermined frequency range, comparing information relating to the pattern(s) to corresponding information relating to at least one reference pattern previously defined as the desired standard response from the at least one standardization sample, determining, based on the comparison, standardizing parameters describing the transition of the pattern(s) of the generated spectrum or spectra to the reference pattern(s) and storing said standardizing parameters in the spectrometer or a computer connected thereto, so that the spectrometer, when presented to an unknown sample, will, using the standardization parameters, generate an optical spectrum substantially identical to that which would be generated in a corresponding spectrometer standardized with a sample of the same chemical composition using the same previously defined reference pattern(s). The present method relates to standardization of the instrument to a well-defined state into which any number of instruments may be brought. In this state, calibrations may be transferred freely from instrument to instrument.
CA002212358A 1995-02-09 1996-02-09 A method for standardizing a spectrometer Expired - Lifetime CA2212358C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DK0153/95 1995-02-09
DK15395 1995-02-09
DK85395 1995-07-21
DK0853/95 1995-07-21
PCT/DK1996/000068 WO1996024832A1 (en) 1995-02-09 1996-02-09 A method for standardizing a spectrometer

Publications (2)

Publication Number Publication Date
CA2212358A1 true CA2212358A1 (en) 1996-08-15
CA2212358C CA2212358C (en) 2003-05-20

Family

ID=26063412

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002212358A Expired - Lifetime CA2212358C (en) 1995-02-09 1996-02-09 A method for standardizing a spectrometer

Country Status (13)

Country Link
US (1) US5933792A (en)
EP (1) EP0808450B1 (en)
JP (1) JP3694029B2 (en)
KR (1) KR100358476B1 (en)
AT (1) ATE192850T1 (en)
AU (1) AU709619B2 (en)
CA (1) CA2212358C (en)
DE (1) DE69608252T2 (en)
DK (1) DK0808450T3 (en)
ES (1) ES2145426T3 (en)
NZ (1) NZ300915A (en)
PL (1) PL181965B1 (en)
WO (1) WO1996024832A1 (en)

Families Citing this family (93)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6240306B1 (en) 1995-08-09 2001-05-29 Rio Grande Medical Technologies, Inc. Method and apparatus for non-invasive blood analyte measurement with fluid compartment equilibration
CA2231305C (en) * 1997-03-11 2007-03-20 Merrit Nyles Jacobs Improved analyzer throughput featuring through-the-tip analysis
US5850623A (en) * 1997-03-14 1998-12-15 Eastman Chemical Company Method for standardizing raman spectrometers to obtain stable and transferable calibrations
DK34297A (en) 1997-03-25 1998-09-26 Foss Electric As Measurement of acetone in milk using IR spectroscopy
US7890158B2 (en) 2001-06-05 2011-02-15 Lumidigm, Inc. Apparatus and method of biometric determination using specialized optical spectroscopy systems
US5798837A (en) 1997-07-11 1998-08-25 Therma-Wave, Inc. Thin film optical measurement system and method with calibrating ellipsometer
US6278519B1 (en) 1998-01-29 2001-08-21 Therma-Wave, Inc. Apparatus for analyzing multi-layer thin film stacks on semiconductors
US6243191B1 (en) * 1998-02-03 2001-06-05 Carl Zeiss Jena Gmbh Optical path length modulator
JP3615390B2 (en) * 1998-05-12 2005-02-02 株式会社ニレコ Measured value analysis method of on-line spectrometer
DE69942250D1 (en) * 1998-06-12 2010-05-27 Radiometer Medical Aps METHOD FOR QUALITY CONTROL OF A SPECTROPHOTOMETER
US6441388B1 (en) * 1998-10-13 2002-08-27 Rio Grande Medical Technologies, Inc. Methods and apparatus for spectroscopic calibration model transfer
US7098037B2 (en) 1998-10-13 2006-08-29 Inlight Solutions, Inc. Accommodating subject and instrument variations in spectroscopic determinations
US6157041A (en) 1998-10-13 2000-12-05 Rio Grande Medical Technologies, Inc. Methods and apparatus for tailoring spectroscopic calibration models
US6647343B1 (en) * 1999-04-29 2003-11-11 Agilent Technologies, Inc. Temporal profile analysis of mass data in a mass sensor system
ATE343346T1 (en) * 1999-08-31 2006-11-15 Nir Diagnostics Inc DEVICE FOR CHECKING THE ACCURACY OF A SPECTRA ANALYZER
US6502448B1 (en) * 1999-09-07 2003-01-07 Edward Rapkin Chromatography detection system and method
US6816605B2 (en) 1999-10-08 2004-11-09 Lumidigm, Inc. Methods and systems for biometric identification of individuals using linear optical spectroscopy
ATE308034T1 (en) * 1999-10-14 2005-11-15 Nir Diagnostics Inc METHOD FOR OPTIMIZING WAVELENGTH CALIBRATION
US6351306B1 (en) 1999-10-19 2002-02-26 Kaiser Optical Systems, Inc. Optical measurement probe calibration configurations
US20050037505A1 (en) * 2000-05-11 2005-02-17 James Samsoondar Spectroscopic method and apparatus for analyte measurement
JP3520910B2 (en) * 1999-12-20 2004-04-19 株式会社ニコン Optical element thickness measurement method and optical element manufacturing method
US6751576B2 (en) 2000-03-10 2004-06-15 Cognis Corporation On-site agricultural product analysis system and method of analyzing
US6519542B1 (en) * 2000-05-09 2003-02-11 Agere Systems Inc Method of testing an unknown sample with an analytical tool
US6519543B1 (en) 2000-05-09 2003-02-11 Agere Systems Inc. Calibration method for quantitative elemental analysis
US6603119B1 (en) 2000-05-09 2003-08-05 Agere Systems Inc. Calibration method for quantitative elemental analysis
US6549861B1 (en) 2000-08-10 2003-04-15 Euro-Celtique, S.A. Automated system and method for spectroscopic analysis
AU2001288292A1 (en) 2000-08-21 2002-03-04 Euroceltique S.A. Near infrared blood glucose monitoring system
US7043288B2 (en) 2002-04-04 2006-05-09 Inlight Solutions, Inc. Apparatus and method for spectroscopic analysis of tissue to detect diabetes in an individual
US6574490B2 (en) 2001-04-11 2003-06-03 Rio Grande Medical Technologies, Inc. System for non-invasive measurement of glucose in humans
US6412658B1 (en) 2001-06-01 2002-07-02 Imx Labs, Inc. Point-of-sale body powder dispensing system
US7194369B2 (en) * 2001-07-23 2007-03-20 Cognis Corporation On-site analysis system with central processor and method of analyzing
US8573263B2 (en) 2001-09-24 2013-11-05 Cosmetic Technologies, Llc Apparatus and method for custom cosmetic dispensing
CA2461307C (en) 2001-09-24 2011-01-11 Imx Labs, Inc. Apparatus and method for custom cosmetic dispensing
DE10152679B4 (en) 2001-10-19 2019-01-10 Spectro Analytical Instruments Gmbh & Co. Kg Method for fully automatic transmission of calibrations of optical emission spectrometers
US7009180B2 (en) * 2001-12-14 2006-03-07 Optiscan Biomedical Corp. Pathlength-independent methods for optically determining material composition
US6862534B2 (en) * 2001-12-14 2005-03-01 Optiscan Biomedical Corporation Method of determining an analyte concentration in a sample from an absorption spectrum
WO2003058214A1 (en) * 2002-01-10 2003-07-17 Foss Analytical A/S Method and means for correcting measuring instruments
US6654125B2 (en) 2002-04-04 2003-11-25 Inlight Solutions, Inc Method and apparatus for optical spectroscopy incorporating a vertical cavity surface emitting laser (VCSEL) as an interferometer reference
US6859119B2 (en) * 2002-12-26 2005-02-22 Motorola, Inc. Meso-microelectromechanical system package
WO2004069164A2 (en) * 2003-01-30 2004-08-19 Euro Celtique Sa Wireless blood glucose monitoring system
US7460696B2 (en) 2004-06-01 2008-12-02 Lumidigm, Inc. Multispectral imaging biometrics
AU2004227886A1 (en) 2003-04-04 2004-10-21 Lumidigm, Inc. Multispectral biometric sensor
US7668350B2 (en) 2003-04-04 2010-02-23 Lumidigm, Inc. Comparative texture analysis of tissue for biometric spoof detection
US7751594B2 (en) 2003-04-04 2010-07-06 Lumidigm, Inc. White-light spectral biometric sensors
US20050106749A1 (en) * 2003-04-15 2005-05-19 Braig James R. Sample element for use in material analysis
US20050037384A1 (en) * 2003-04-15 2005-02-17 Braig James R. Analyte detection system
SE0301897D0 (en) * 2003-06-27 2003-06-27 Foss Tecator Ab Referece standard and method of calibration
US20050073690A1 (en) * 2003-10-03 2005-04-07 Abbink Russell E. Optical spectroscopy incorporating a vertical cavity surface emitting laser (VCSEL)
AU2005243063A1 (en) * 2004-05-14 2005-11-24 Chemometec A/S A method and a system for the assessment of samples
US8229185B2 (en) 2004-06-01 2012-07-24 Lumidigm, Inc. Hygienic biometric sensors
WO2006009910A2 (en) * 2004-06-17 2006-01-26 The Regents Of The University Of California Time-resolved optometric fluorescence detection for skin diagnostics
US8787630B2 (en) 2004-08-11 2014-07-22 Lumidigm, Inc. Multispectral barcode imaging
WO2006021926A1 (en) * 2004-08-26 2006-03-02 Koninklijke Philips Electronics N.V. Calibration for spectroscopic analysis
JP4699473B2 (en) 2004-11-08 2011-06-08 アール． バーソロミュー ジュリー Customized cosmetic automatic blending equipment
US7801338B2 (en) 2005-04-27 2010-09-21 Lumidigm, Inc. Multispectral biometric sensors
JP2007108151A (en) * 2005-10-14 2007-04-26 Junzo Umemura Fourier transform infrared spectrophotometer without spectrum noise by steam or carbon dioxide gas
FR2893129B1 (en) * 2005-11-04 2008-05-09 Inst Francais Du Petrole METHOD OF DETERMINING THE CONJUGATED DIOLEFIN CONTENT OF A SAMPLE FROM ITS NEAR-INFRARED SPECTRUM AND APPLYING THE METHOD TO THE CONTROL OF UNITS
JP5177949B2 (en) * 2005-11-11 2013-04-10 アングルトライ株式会社 Spectral waveform pattern peak position correction method and program
US7583378B2 (en) * 2006-02-23 2009-09-01 Itt Manufacturing Enterprises, Inc. Spectrograph calibration using known light source and Raman scattering
CN101506826A (en) 2006-07-19 2009-08-12 光谱辨识公司 Multibiometric multispectral imager
US8175346B2 (en) 2006-07-19 2012-05-08 Lumidigm, Inc. Whole-hand multispectral biometric imaging
US7995808B2 (en) 2006-07-19 2011-08-09 Lumidigm, Inc. Contactless multispectral biometric capture
US8355545B2 (en) 2007-04-10 2013-01-15 Lumidigm, Inc. Biometric detection using spatial, temporal, and/or spectral techniques
US7801339B2 (en) 2006-07-31 2010-09-21 Lumidigm, Inc. Biometrics with spatiospectral spoof detection
US7804984B2 (en) 2006-07-31 2010-09-28 Lumidigm, Inc. Spatial-spectral fingerprint spoof detection
EP1916513A1 (en) 2006-10-27 2008-04-30 optek-Danulat GmbH Inline photometer apparatus and calibration method
WO2008049484A1 (en) * 2006-10-27 2008-05-02 Optek-Danulat Gmbh Inline-photometer device and calibration method
US7630081B2 (en) * 2007-01-12 2009-12-08 Sas Photonics, Llc Interferometer maintaining optical relationship between elements
EP2120713A2 (en) 2007-03-21 2009-11-25 Lumidigm, Inc. Biometrics based on locally consistent features
US8253942B2 (en) * 2007-09-27 2012-08-28 Scott Technologies, Inc. Optical gas detector
US20120002210A1 (en) * 2009-04-28 2012-01-05 Foss Analytical A/S Optical interferometer
EP2438466A1 (en) * 2009-06-05 2012-04-11 FLIR Radiation GmbH Method for linearizing an energy spectrum of radiation detectors
BR112012004177A2 (en) 2009-08-26 2016-03-29 Lumidigm Inc biometric method and system, system, method, object location, object discrimination, and background methods, and multifaceted prism
US8570149B2 (en) 2010-03-16 2013-10-29 Lumidigm, Inc. Biometric imaging using an optical adaptive interface
CN102374902B (en) * 2010-08-11 2014-03-26 曹柏林 Quantum-theory correction method for improving temperature measuring accuracy of radiation thermometer
JP5516486B2 (en) * 2011-04-14 2014-06-11 株式会社島津製作所 Spectrometer and program
EP2745085B1 (en) * 2011-08-19 2019-04-17 FOSS Analytical A/S Method for compensating amplitude drift in a spectrometer and spectrometer performing said method
US9846078B2 (en) * 2011-10-17 2017-12-19 Foss Analytical A/S Method of compensating frequency drift in an interferometer
US9915565B2 (en) * 2012-10-26 2018-03-13 Applied Spectral Imaging Ltd. Method and system for spectral imaging
JP6313224B2 (en) * 2013-01-23 2018-04-18 テルモ株式会社 Calibration method, apparatus, program, and body fluid component measurement apparatus calibrated using this method
KR102076524B1 (en) * 2013-01-25 2020-02-13 삼성전자주식회사 Test apparatus of fluidic sample and test method of fluidic sample
NZ713752A (en) * 2013-06-04 2019-03-29 Foss Analytical As Method of and apparatus for correcting for intensity deviations in a spectrometer
US9540701B2 (en) 2014-02-28 2017-01-10 Asl Analytical, Inc. Apparatus and method for automated process monitoring and control with near infrared spectroscopy
WO2016200975A1 (en) 2015-06-08 2016-12-15 Cosmetic Technologies, Llc Automated delivery system of a cosmetic sample
JP2017150856A (en) * 2016-02-22 2017-08-31 旭化成エレクトロニクス株式会社 Measurement device, sensor device, and portable terminal
FR3054941B1 (en) * 2016-08-05 2018-08-31 Airbus Defence And Space Sas METHOD AND SYSTEM FOR DETECTING USEFUL SIGNALS WITH RESPECTIVE NON-NEGLIGIBLE FREQUENTIAL DERIVATIVES IN A GLOBAL SIGNAL
WO2019222888A1 (en) * 2018-05-21 2019-11-28 深圳达闼科技控股有限公司 Method for determining calibration coefficient of spectrometer, related apparatus and storage medium
PT3899462T (en) * 2018-12-17 2022-08-05 Evonik Operations Gmbh Method for the identification of an incorrectly calibrated or non-calibrated infrared spectrometer
DE102019203562B4 (en) * 2019-03-15 2022-11-03 Bruker Optics Gmbh & Co. Kg Method for determining a correction quantity function and method for generating a frequency-corrected hyperspectral image
CN112414966B (en) * 2019-08-21 2022-06-10 东北大学秦皇岛分校 Near infrared spectrum multi-target calibration migration method based on affine change
EP4090945A1 (en) 2020-01-16 2022-11-23 FOSS Analytical A/S Method of determining an optical pathlength through a cuvette
DE102020116094B4 (en) 2020-06-18 2022-02-10 Carl Zeiss Spectroscopy Gmbh Large number of identical spectrometers and methods for their calibration
CN112683816B (en) * 2020-12-25 2021-08-06 中船重工安谱（湖北）仪器有限公司 Spectrum identification method for spectrum model transmission

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4866644A (en) * 1986-08-29 1989-09-12 Shenk John S Optical instrument calibration system
US4970671A (en) * 1988-12-20 1990-11-13 Trebor Industries, Inc. Bias drift compensation in near infrared quantitative analysis instruments
JPH0346524A (en) * 1989-07-14 1991-02-27 Yokogawa Electric Corp Colorimeter
US5272345A (en) * 1989-09-22 1993-12-21 Ada Technologies, Inc. Calibration method and apparatus for measuring the concentration of components in a fluid
US5121337A (en) * 1990-10-15 1992-06-09 Exxon Research And Engineering Company Method for correcting spectral data for data due to the spectral measurement process itself and estimating unknown property and/or composition data of a sample using such method
US5251006A (en) * 1991-03-07 1993-10-05 Nirsystems Incorporated Automatic spectrophotometer calibration system
US5357336A (en) * 1991-08-08 1994-10-18 The Dow Chemical Company Method and apparatus for multivariate characterization of optical instrument response
US5347475A (en) * 1991-09-20 1994-09-13 Amoco Corporation Method for transferring spectral information among spectrometers
EP0636261A4 (en) * 1992-04-16 1998-03-25 Dow Chemical Co Improved method for interpreting complex data and detecting abnormal instrument or process behavior.
JP2741376B2 (en) * 1992-04-18 1998-04-15 株式会社堀場製作所 Multi-component analysis method in spectroscopic analysis
US5545895A (en) * 1995-03-20 1996-08-13 The Dow Chemical Company Method of standardizing data obtained through mass spectrometry

Also Published As

Publication number Publication date
EP0808450B1 (en) 2000-05-10
PL181965B1 (en) 2001-10-31
US5933792A (en) 1999-08-03
AU4619696A (en) 1996-08-27
WO1996024832A1 (en) 1996-08-15
JPH10513560A (en) 1998-12-22
DK0808450T3 (en) 2000-09-25
AU709619B2 (en) 1999-09-02
CA2212358C (en) 2003-05-20
ATE192850T1 (en) 2000-05-15
ES2145426T3 (en) 2000-07-01
DE69608252D1 (en) 2000-06-15
KR100358476B1 (en) 2003-04-11
NZ300915A (en) 1998-12-23
PL321809A1 (en) 1997-12-22
EP0808450A1 (en) 1997-11-26
DE69608252T2 (en) 2000-11-02
KR19980702083A (en) 1998-07-15
JP3694029B2 (en) 2005-09-14

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