CA2052467A1 - Spectrophotometre a modulation, a commutation et a selection de longueur d'onde simultanees - Google Patents

Spectrophotometre a modulation, a commutation et a selection de longueur d'onde simultanees

Info

Publication number
CA2052467A1
CA2052467A1 CA2052467A CA2052467A CA2052467A1 CA 2052467 A1 CA2052467 A1 CA 2052467A1 CA 2052467 A CA2052467 A CA 2052467A CA 2052467 A CA2052467 A CA 2052467A CA 2052467 A1 CA2052467 A1 CA 2052467A1
Authority
CA
Canada
Prior art keywords
spectrophotometer
light source
switching
wavelength selection
sample
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
CA2052467A
Other languages
English (en)
Other versions
CA2052467C (fr
Inventor
Alan John Lowne
James Roy Sandifer
David Scott Uerz
Steven Casimir Switalski
Hsue-Yang Liu
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.)
Eastman Kodak Co
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2052467A1 publication Critical patent/CA2052467A1/fr
Application granted granted Critical
Publication of CA2052467C publication Critical patent/CA2052467C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • G01J3/42—Absorption spectrometry; Double beam spectrometry; Flicker spectrometry; Reflection spectrometry
    • 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
    • G01J3/02—Details
    • 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
    • G01J3/02—Details
    • G01J3/0205—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows
    • G01J3/0218—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows using optical fibers
    • 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
    • G01J3/02—Details
    • G01J3/0205—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows
    • G01J3/0232—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows using shutters
    • 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
    • G01J3/02—Details
    • G01J3/0205—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows
    • G01J3/0235—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows using means for replacing an element by another, for replacing a filter or a grating
    • 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
    • G01J3/02—Details
    • G01J3/0289—Field-of-view determination; Aiming or pointing of a spectrometer; Adjusting alignment; Encoding angular position; Size of measurement area; Position tracking
    • 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
    • G01J3/02—Details
    • G01J3/08—Beam switching arrangements
    • 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
    • G01J3/44—Raman spectrometry; Scattering spectrometry ; Fluorescence 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
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/314—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry with comparison of measurements at specific and non-specific wavelengths
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/02—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light
    • G02B26/04—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light by periodically varying the intensity of light, e.g. using choppers
    • 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
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J2001/4242—Modulated light, e.g. for synchronizing source and detector circuit
    • 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
    • G01J3/12—Generating the spectrum; Monochromators
    • G01J2003/1213—Filters in general, e.g. dichroic, band
    • 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
    • G01J2003/2866—Markers; Calibrating of scan
    • 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
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N2021/3129—Determining multicomponents by multiwavelength light
    • G01N2021/3133—Determining multicomponents by multiwavelength light with selection of wavelengths before the sample
    • 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
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/314—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry with comparison of measurements at specific and non-specific wavelengths
    • G01N2021/3159—Special features of multiplexing circuits
    • 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
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/314—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry with comparison of measurements at specific and non-specific wavelengths
    • G01N2021/317—Special constructive features
    • G01N2021/3174—Filter wheel
    • 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
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/4738—Diffuse reflection, e.g. also for testing fluids, fibrous materials
    • G01N21/474—Details of optical heads therefor, e.g. using optical fibres
    • G01N2021/4742—Details of optical heads therefor, e.g. using optical fibres comprising optical fibres
    • 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
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G01N21/359—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using near infrared light
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/08—Optical fibres; light guides
    • G01N2201/0826—Fibre array at source, distributing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/12—Circuits of general importance; Signal processing
    • G01N2201/128—Alternating sample and standard or reference part in one path
    • G01N2201/1283—Opaque part

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Optics & Photonics (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
CA002052467A 1990-10-01 1991-09-30 Spectrophotometre a modulation, a commutation et a selection de longueur d'onde simultanees Expired - Fee Related CA2052467C (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US59120490A 1990-10-01 1990-10-01
US591,204 1990-10-01
US73782491A 1991-07-26 1991-07-26
US737,824 1991-07-26

Publications (2)

Publication Number Publication Date
CA2052467A1 true CA2052467A1 (fr) 1992-04-02
CA2052467C CA2052467C (fr) 1995-09-19

Family

ID=27081077

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002052467A Expired - Fee Related CA2052467C (fr) 1990-10-01 1991-09-30 Spectrophotometre a modulation, a commutation et a selection de longueur d'onde simultanees

Country Status (6)

Country Link
US (2) US5357343A (fr)
EP (1) EP0479379B1 (fr)
JP (1) JP2703680B2 (fr)
KR (1) KR920008475A (fr)
CA (1) CA2052467C (fr)
DE (1) DE69103714T2 (fr)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69103714T2 (de) * 1990-10-01 1995-04-20 Eastman Kodak Co Spektralphotometer mit Mitteln zur gleichzeitigen Modulierung, Umschaltung und Wellenlängenauswahl einer Lichtquelle.
JP3207583B2 (ja) * 1992-09-21 2001-09-10 松下電器産業株式会社 温度分布測定装置
FR2701318B1 (fr) * 1993-02-09 1995-03-17 Inst Francais Du Petrole Dispositif perfectionné et méthode pour mesurer optiquement des caractéristiques d'une substance.
US5933235A (en) * 1995-03-15 1999-08-03 Yokogawa Electric Corporation Optical spectrum analyzer and spectrometer
US6072578A (en) * 1995-04-24 2000-06-06 Ischdonat; Thomas Spectroscopic process and suitable spectrometer therefor
US5646736A (en) * 1995-12-19 1997-07-08 Chemetrics, Inc. Analytical apparatus with coded elements
US6459425B1 (en) * 1997-08-25 2002-10-01 Richard A. Holub System for automatic color calibration
US5822071A (en) * 1997-03-27 1998-10-13 Bayer Corporation Spectrometer normalization system
US6015479A (en) * 1997-07-25 2000-01-18 The United States Of America As Represented By The Secretary Of The Navy Thin-layer spectroelectrochemical cell
DE19831216A1 (de) * 1998-07-03 2000-01-05 Amecon Gmbh Verfahren und Vorrichtung zur Bestimmung der Abhängigkeit einer ersten Meßgröße von einer zweiten Meßgröße
US6472657B1 (en) 2000-06-15 2002-10-29 Sandia Corporation Laser synchronized high-speed shutter for spectroscopic application
JP4054854B2 (ja) * 2000-10-17 2008-03-05 独立行政法人農業・食品産業技術総合研究機構 近赤外分光法を用いた液状試料の分析法
WO2004025233A1 (fr) * 2002-09-13 2004-03-25 Klein Medical Limited Spectrophotometre
US7244937B1 (en) * 2002-10-15 2007-07-17 Raytheon Company Optical measurement apparatus with laser light source
WO2005010799A2 (fr) * 2003-07-16 2005-02-03 Shrenik Deliwala Codage et reconstruction optiques
US7255474B2 (en) * 2003-07-28 2007-08-14 Symyx Technologies, Inc. Parallel infrared spectroscopy apparatus and method
KR20040004204A (ko) * 2003-11-03 2004-01-13 이동원 불꽃 원자흡광 광도계에서 다원소 분석방법및 그 장치
US7113282B2 (en) * 2003-12-19 2006-09-26 3M Innonative Properties Company Multiplexing rotary spectrometer
US7502105B2 (en) * 2004-09-15 2009-03-10 General Electric Company Apparatus and method for producing a calibrated Raman spectrum
CN1295542C (zh) * 2004-12-15 2007-01-17 中国科学院上海光学精密机械研究所 透反型斩光器
US7130062B2 (en) * 2005-01-28 2006-10-31 Raytheon Company Rapid-response electron-beam deposition system having a controller utilizing leading and trailing deposition indicators
ZA200805012B (en) * 2005-11-29 2009-11-25 Klein Medical Ltd Syringe for use in spectroscopy
JP2007171444A (ja) * 2005-12-21 2007-07-05 Nippon Sheet Glass Co Ltd 光学フィルタ切り替え装置
US7785239B2 (en) * 2006-02-21 2010-08-31 Nir Daniel Magnetically adjustable dumbbells
US8077309B2 (en) 2007-01-29 2011-12-13 Applied Instrument Technologies, Inc. Chemical analyzer for industrial process control
WO2012138236A1 (fr) 2011-04-06 2012-10-11 Krouse Donal Paul Analyseur spectroscopique
WO2013191566A1 (fr) 2012-06-19 2013-12-27 Klein Medical Limited Analyse spectroscopique
JP5947709B2 (ja) * 2012-12-27 2016-07-06 株式会社堀場製作所 分光分析方法及び分光分析装置
JP6435799B2 (ja) * 2014-11-17 2018-12-12 横河電機株式会社 光学装置および測定装置
JP6613736B2 (ja) * 2015-09-07 2019-12-04 セイコーエプソン株式会社 物質検出方法および物質検出装置
EP3299780A1 (fr) * 2016-09-26 2018-03-28 Berthold Technologies GmbH & Co. KG Procede et systeme de mesure spectroscopique de caracteristiques optiques d'echantillons
KR102302604B1 (ko) * 2017-11-01 2021-09-16 한국전자통신연구원 분광 장치
CN107796514A (zh) * 2017-11-24 2018-03-13 武汉量谱精密仪器有限公司 双光束分光光度计的分束装置以及转盘
AT521624B1 (de) * 2019-01-17 2020-03-15 Scan Messtechnik Gmbh Vorrichtung und Verfahren zum Erfassen von Eigenschaften eines zu untersuchenden Fluids
CN112798526A (zh) * 2019-12-16 2021-05-14 杭州米欧仪器有限公司 光度计光路系统、分光光度计及测量溶液吸光度的方法

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7210356A (fr) * 1971-08-06 1973-02-08
JPS5832338B2 (ja) * 1975-06-21 1983-07-12 コニカ株式会社 走査型カラ−濃度計
US3999062A (en) * 1975-10-01 1976-12-21 International Business Machines Corporation Spectrophotometer for dual mode fluorescence analysis
US4097743A (en) * 1977-04-19 1978-06-27 Moisture Systems Corp. Moisture analyzing method and apparatus
EP0015611B1 (fr) * 1979-03-02 1983-09-14 Philips Electronics Uk Limited Spectrophotomètre
JPS55138620A (en) * 1979-04-17 1980-10-29 Nippon Denshiyoku Kogyo Kk Photometric device
DE2918555A1 (de) * 1979-05-08 1980-11-13 Hawle Gmbh & Co Kg E Anbohrschelle
US4392056A (en) * 1981-04-27 1983-07-05 Automated Packaging Systems, Inc. Control marking detector
US4477190A (en) * 1981-07-20 1984-10-16 American Hospital Supply Corporation Multichannel spectrophotometer
US4644485A (en) * 1984-09-14 1987-02-17 The Perkin-Elmer Corporation Phase-locked timing system for a spectrophotometer
US4648714A (en) * 1985-09-11 1987-03-10 University Of Utah Molecular gas analysis by Raman scattering in intracavity laser configuration
US4945250A (en) * 1989-07-12 1990-07-31 Pb Diagnostic Systems, Inc. Optical read head for immunoassay instrument
US4977325A (en) * 1989-07-12 1990-12-11 P B Diagnostic Systems, Inc. Optical read system and immunoassay method
JPH03223654A (ja) * 1989-07-26 1991-10-02 Yokogawa Electric Corp 吸光光度計
DD291855A5 (de) * 1990-01-24 1991-07-11 Messgeraete Gmbh,De Anordnung zur positionssynchronen abtastung eines filterrades in spektrometern oder multispektralpyrometern
DE69103714T2 (de) * 1990-10-01 1995-04-20 Eastman Kodak Co Spektralphotometer mit Mitteln zur gleichzeitigen Modulierung, Umschaltung und Wellenlängenauswahl einer Lichtquelle.
EP0523308A1 (fr) * 1991-07-19 1993-01-20 GRETAG Aktiengesellschaft Procédé photométrique et photomètre commandé par ordinateur

Also Published As

Publication number Publication date
JPH04244924A (ja) 1992-09-01
JP2703680B2 (ja) 1998-01-26
EP0479379A2 (fr) 1992-04-08
KR920008475A (ko) 1992-05-28
CA2052467C (fr) 1995-09-19
DE69103714D1 (de) 1994-10-06
US5526121A (en) 1996-06-11
US5357343A (en) 1994-10-18
EP0479379A3 (en) 1992-07-01
EP0479379B1 (fr) 1994-08-31
DE69103714T2 (de) 1995-04-20

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