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WO1992004615A1 - Analyse spectrale et procede de mesure d'absorption a domaine spectral controle - Google Patents

Analyse spectrale et procede de mesure d'absorption a domaine spectral controle Download PDF

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Publication number
WO1992004615A1
WO1992004615A1 PCT/CH1991/000173 CH9100173W WO9204615A1 WO 1992004615 A1 WO1992004615 A1 WO 1992004615A1 CH 9100173 W CH9100173 W CH 9100173W WO 9204615 A1 WO9204615 A1 WO 9204615A1
Authority
WO
WIPO (PCT)
Prior art keywords
spectral
spectral range
measurement method
absorption measurement
controlled
Prior art date
Application number
PCT/CH1991/000173
Other languages
German (de)
English (en)
Inventor
Josef Stern
Original Assignee
Josef Stern
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 Josef Stern filed Critical Josef Stern
Publication of WO1992004615A1 publication Critical patent/WO1992004615A1/fr

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
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J3/50—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors
    • 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
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J3/50—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors
    • G01J3/502—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors using a dispersive element, e.g. grating, prism
    • 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
    • G01N21/255—Details, e.g. use of specially adapted sources, lighting or optical systems
    • 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
    • G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
    • G01J1/16—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void using electric radiation detectors
    • G01J1/1626—Arrangements with two photodetectors, the signals of which are compared
    • G01J2001/1636—Arrangements with two photodetectors, the signals of which are compared one detector directly monitoring the source, e.g. also impulse time controlling
    • 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
    • G01J3/10—Arrangements of light sources specially adapted for spectrometry or colorimetry
    • G01J2003/102—Plural sources
    • 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
    • G01J2003/421—Single beam
    • 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
    • G01J2003/425—Reflectance
    • 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
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/4738—Diffuse reflection, e.g. also for testing fluids, fibrous materials
    • G01N2021/4764—Special kinds of physical applications
    • G01N2021/4773—Partly or totally translucent samples

Definitions

  • small areas such as e.g. a tooth with a selectable measuring surface size (depending on the model 100 x 100 mm to 0.1 x 0.1 mm) divided into spectral ranges (16, 32, 64) and the absorption in each spectral range measured instantaneously in parts per thousand, without contact (from 50 to 600 mm) and with an ambient light intensity of up to 600 lumens.
  • variable plasma volume in the xenon lamp in low-cost lamps results in statistically detectable color changes, which leads to a long measuring time if the measuring precision is desirable.
  • Xenon flash lamps (6) are used to generate the spectral ranges necessary for spectral analysis (2).
  • Spectral analysis and absorption measurement methods "are mainly based on the division into spectral ranges before that
  • the measuring value of the absorption value in the given spectral range of around 10 ppm / ⁇ C can be achieved at ambient temperatures from 10 ⁇ C to 40 ⁇ C will.

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)

Abstract

La nouvelle méthode combinant l'analyse spectrale et le procédé de mesure d'absorption à domaine spectral contrôlé, ouvre de nouvelles possibilités pour l'analyse spectrale et la mesure de petits objets non plans. Grâce à l'utilisation de rayons de centrage, de petits objets peuvent être mesurés en profondeur (translucidité, opalescence). L'utilisation d'un détecteur CCD à la place d'une photodiode PIN permet de mesurer, par analyse spectrale, des corps entiers à trois dimensions. Grâce à la mesure sans contact, ce procédé de mesure ouvre de nouvelles possibilités pour les chaînes de fabrication et pour la production automatique de matières textiles, papiers, colorants, produits alimentaires, etc.
PCT/CH1991/000173 1990-09-03 1991-08-15 Analyse spectrale et procede de mesure d'absorption a domaine spectral controle WO1992004615A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH285590 1990-09-03
CH2855/90-8 1990-09-03

Publications (1)

Publication Number Publication Date
WO1992004615A1 true WO1992004615A1 (fr) 1992-03-19

Family

ID=4243096

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH1991/000173 WO1992004615A1 (fr) 1990-09-03 1991-08-15 Analyse spectrale et procede de mesure d'absorption a domaine spectral controle

Country Status (2)

Country Link
AU (1) AU8302691A (fr)
WO (1) WO1992004615A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10323193A1 (de) * 2003-05-22 2004-12-23 Océ Document Technologies GmbH Einrichtung und Verfahren zur multispektralen Abtastung einer Farbbildvorlage

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3687519A (en) * 1971-02-24 1972-08-29 Us Army Semi-micro absolute transmittance and specular reflectance accessory for spectrophotometers
US4241998A (en) * 1978-01-20 1980-12-30 Hoffmann-La Roche Inc. Spectrophotometer
GB2049924A (en) * 1979-06-01 1980-12-31 Instrumentation Specialties Co Absorbance monitor
EP0274403A2 (fr) * 1987-01-05 1988-07-13 Btg International Limited Appareil d'analyse d'absorption de lumière
GB2203834A (en) * 1987-04-10 1988-10-26 Dunacoop Kereskedel Idegenforg Measuring light intensity
US4881811A (en) * 1988-02-16 1989-11-21 Colorgen, Inc. Remote color measurement device
EP0367647A1 (fr) * 1988-10-17 1990-05-09 Bertin & Cie Appareil de prise d'informations colorimétriques in situ, en particulier sur une dent en bouche

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3687519A (en) * 1971-02-24 1972-08-29 Us Army Semi-micro absolute transmittance and specular reflectance accessory for spectrophotometers
US4241998A (en) * 1978-01-20 1980-12-30 Hoffmann-La Roche Inc. Spectrophotometer
GB2049924A (en) * 1979-06-01 1980-12-31 Instrumentation Specialties Co Absorbance monitor
EP0274403A2 (fr) * 1987-01-05 1988-07-13 Btg International Limited Appareil d'analyse d'absorption de lumière
GB2203834A (en) * 1987-04-10 1988-10-26 Dunacoop Kereskedel Idegenforg Measuring light intensity
US4881811A (en) * 1988-02-16 1989-11-21 Colorgen, Inc. Remote color measurement device
EP0367647A1 (fr) * 1988-10-17 1990-05-09 Bertin & Cie Appareil de prise d'informations colorimétriques in situ, en particulier sur une dent en bouche

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 10, no. 358 (P-522)(2415) 2. Dezember 1986 & JP,A,61 155 735 ( SHIMADZU CORP ) 15. Juli 1986 siehe Zusammenfassung *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10323193A1 (de) * 2003-05-22 2004-12-23 Océ Document Technologies GmbH Einrichtung und Verfahren zur multispektralen Abtastung einer Farbbildvorlage

Also Published As

Publication number Publication date
AU8302691A (en) 1992-03-30

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