DE69103714T2 - Spektralphotometer mit Mitteln zur gleichzeitigen Modulierung, Umschaltung und Wellenlängenauswahl einer Lichtquelle. - Google Patents
Spektralphotometer mit Mitteln zur gleichzeitigen Modulierung, Umschaltung und Wellenlängenauswahl einer Lichtquelle.Info
- Publication number
- DE69103714T2 DE69103714T2 DE69103714T DE69103714T DE69103714T2 DE 69103714 T2 DE69103714 T2 DE 69103714T2 DE 69103714 T DE69103714 T DE 69103714T DE 69103714 T DE69103714 T DE 69103714T DE 69103714 T2 DE69103714 T2 DE 69103714T2
- Authority
- DE
- Germany
- Prior art keywords
- spectrophotometer
- switching
- light source
- wavelength selection
- simultaneous modulation
- 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.)
- Expired - Fee Related
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
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US59120490A | 1990-10-01 | 1990-10-01 | |
US73782491A | 1991-07-26 | 1991-07-26 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69103714D1 DE69103714D1 (de) | 1994-10-06 |
DE69103714T2 true DE69103714T2 (de) | 1995-04-20 |
Family
ID=27081077
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69103714T Expired - Fee Related DE69103714T2 (de) | 1990-10-01 | 1991-09-27 | Spektralphotometer mit Mitteln zur gleichzeitigen Modulierung, Umschaltung und Wellenlängenauswahl einer Lichtquelle. |
Country Status (6)
Country | Link |
---|---|
US (2) | US5357343A (de) |
EP (1) | EP0479379B1 (de) |
JP (1) | JP2703680B2 (de) |
KR (1) | KR920008475A (de) |
CA (1) | CA2052467C (de) |
DE (1) | DE69103714T2 (de) |
Families Citing this family (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0479379B1 (de) * | 1990-10-01 | 1994-08-31 | Eastman Kodak Company | 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 |
WO1996034257A1 (de) * | 1995-04-24 | 1996-10-31 | Qualico Entwicklungs- Und Beratungsgesellschaft Für Chemische Qualitätskontrolle Mbh | Spektroskopieverfahren und hierfür geeignetes spektrometer |
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 |
CA2498802C (en) * | 2002-09-13 | 2010-01-05 | Klein Medical Limited | Spectrophotometer |
US7244937B1 (en) * | 2002-10-15 | 2007-07-17 | Raytheon Company | Optical measurement apparatus with laser light source |
WO2005010799A2 (en) * | 2003-07-16 | 2005-02-03 | Shrenik Deliwala | Optical encoding and reconstruction |
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 |
CA2888263A1 (en) * | 2005-11-29 | 2007-06-07 | Cornelis Kees Klein | 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 |
AU2012240669B2 (en) | 2011-04-06 | 2016-02-04 | Klein Medical Limited | Spectroscopic analyser |
EP2861968A4 (de) | 2012-06-19 | 2016-03-09 | Klein Medical Ltd | Spektroskopische analyse |
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 (de) * | 2016-09-26 | 2018-03-28 | Berthold Technologies GmbH & Co. KG | Verfahren und system zum spektroskopischen messen optischer eigenschaften von proben |
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 |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7210356A (de) * | 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 |
DE3064790D1 (en) * | 1979-03-02 | 1983-10-20 | Philips Electronic Associated | Spectrophotometer |
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 |
EP0479379B1 (de) * | 1990-10-01 | 1994-08-31 | Eastman Kodak Company | Spektralphotometer mit Mitteln zur gleichzeitigen Modulierung, Umschaltung und Wellenlängenauswahl einer Lichtquelle |
EP0523308A1 (de) * | 1991-07-19 | 1993-01-20 | GRETAG Aktiengesellschaft | Fotometrisches Verfahren und computergesteuertes Fotometer |
-
1991
- 1991-09-27 EP EP91202513A patent/EP0479379B1/de not_active Expired - Lifetime
- 1991-09-27 DE DE69103714T patent/DE69103714T2/de not_active Expired - Fee Related
- 1991-09-30 CA CA002052467A patent/CA2052467C/en not_active Expired - Fee Related
- 1991-09-30 JP JP3251651A patent/JP2703680B2/ja not_active Expired - Lifetime
- 1991-10-01 KR KR1019910017173A patent/KR920008475A/ko not_active Application Discontinuation
-
1992
- 1992-09-28 US US07/951,607 patent/US5357343A/en not_active Expired - Fee Related
-
1993
- 1993-01-15 US US08/005,320 patent/US5526121A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2703680B2 (ja) | 1998-01-26 |
EP0479379B1 (de) | 1994-08-31 |
KR920008475A (ko) | 1992-05-28 |
US5357343A (en) | 1994-10-18 |
CA2052467C (en) | 1995-09-19 |
US5526121A (en) | 1996-06-11 |
JPH04244924A (ja) | 1992-09-01 |
EP0479379A2 (de) | 1992-04-08 |
EP0479379A3 (en) | 1992-07-01 |
CA2052467A1 (en) | 1992-04-02 |
DE69103714D1 (de) | 1994-10-06 |
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