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1. WO2010010684 - INFRARED RADIATION ABSORPTION EXAMINING DEVICE AND INFRARED RADIATION ABSORPTION EXAMINING METHOD

Publication Number WO/2010/010684
Publication Date 28.01.2010
International Application No. PCT/JP2009/003398
International Filing Date 21.07.2009
IPC
G01N 21/39 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
17Systems in which incident light is modified in accordance with the properties of the material investigated
25Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
31Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
39using tunable lasers
G01N 21/27 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
17Systems in which incident light is modified in accordance with the properties of the material investigated
25Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
27using photo-electric detection
CPC
G01J 3/02
GPHYSICS
01MEASURING; TESTING
JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
3Spectrometry; Spectrophotometry; Monochromators; Measuring colours
02Details
G01J 3/027
GPHYSICS
01MEASURING; TESTING
JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
3Spectrometry; Spectrophotometry; Monochromators; Measuring colours
02Details
027Control of working procedures of a spectrometer; Failure detection; Bandwidth calculation
G01J 3/10
GPHYSICS
01MEASURING; TESTING
JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
3Spectrometry; Spectrophotometry; Monochromators; Measuring colours
02Details
10Arrangements of light sources specially adapted for spectrometry or colorimetry
G01J 3/42
GPHYSICS
01MEASURING; TESTING
JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
3Spectrometry; Spectrophotometry; Monochromators; Measuring colours
28Investigating the spectrum
42Absorption spectrometry; Double beam spectrometry; Flicker spectrometry; Reflection spectrometry
G01N 2021/399
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
17Systems in which incident light is modified in accordance with the properties of the material investigated
25Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
31Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
39using tunable lasers
396Type of laser source
399Diode laser
G01N 21/031
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
01Arrangements or apparatus for facilitating the optical investigation
03Cuvette constructions
031Multipass arrangements
Applicants
  • 三井造船株式会社 MITSUI ENGINEERING & SHIPBUILDING CO., LTD. [JP]/[JP] (AllExceptUS)
  • 木村憲明 KIMURA, Noriaki [JP]/[JP] (UsOnly)
Inventors
  • 木村憲明 KIMURA, Noriaki
Agents
  • グローバル・アイピー東京特許業務法人 GLOBAL IP TOKYO
Priority Data
2008-18828822.07.2008JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) INFRARED RADIATION ABSORPTION EXAMINING DEVICE AND INFRARED RADIATION ABSORPTION EXAMINING METHOD
(FR) DISPOSITIF D’EXAMEN DE L’ABSORPTION DES RAYONS INFRAROUGES ET PROCÉDÉ D’EXAMEN DE L’ABSORPTION DES RAYONS INFRAROUGES
(JA) 赤外線吸収検査装置および赤外線吸収検査方法
Abstract
(EN)
Absorption of light passing through an object to be measured is examined.  A pulse laser beam is emitted from a laser light source, and the pulse laser beam passing through the object is received to generate a light-reception signal.  A rectangular pulse is generated at the timing when the level of the light-reception signal crosses a predetermined threshold level and supplied to the laser light source as a drive pulse to emit a pulse laser beam.  Thus, emission of a pulse laser beam is repeated.  The timings at which the rectangular pulses are generated are delayed because of the decrease of the intensity of the pulse laser beam due to the absorption, and the total delay time of the timings is determined.  By using the total delay time, the absorption of light is examined.
(FR)
L’absorption de lumière traversant un objet à mesurer est examinée. Un faisceau laser est émis d’une source de lumière laser, et le faisceau laser à impulsions traversant l’objet est reçu pour générer un signal de réception de lumière. Une impulsion rectangulaire est générée au moment où le niveau du signal de réception de lumière croise un niveau seuil prédéterminé et fourni à la source de faisceau laser sous la forme d’une impulsion de commande pour émettre un faisceau laser à impulsions. Ainsi, l’émission d’un faisceau laser à impulsion est répétée. Les moments auxquels les impulsions rectangulaires sont générées sont retardés en raison de la diminution de l’intensité du faisceau laser à impulsions due à l’absorption, et le retard total des moments est déterminé. En utilisant le retard total, l’absorption de la lumière est examinée.
(JA)
 測定対象物を透過したときの光の吸収を検査するとき、まず、パルスレーザ光をレーザ光源から出射させ、測定対象物を透過したパルスレーザ光を受光して受光信号を得る。次に、得られた受光信号の信号レベルが設定された閾値を横切るタイミングで、矩形パルスを生成し、この矩形パルスを、パルスレーザ光の出射のための駆動パルスとしてレーザ光源に供給する。これにより、パルスレーザ光の出射が繰り返し行われ、パルスレーザ光の吸収による光強度の低下によって生じる矩形パルスの生成のタイミングの累積遅延時間を求め、この累積遅延時間を用いて、光の吸収を検査する。
Also published as
Latest bibliographic data on file with the International Bureau