FR2363789A1 - Colorimetre trichromatique perfectionne - Google Patents

Colorimetre trichromatique perfectionne

Info

Publication number
FR2363789A1
FR2363789A1 FR7726842A FR7726842A FR2363789A1 FR 2363789 A1 FR2363789 A1 FR 2363789A1 FR 7726842 A FR7726842 A FR 7726842A FR 7726842 A FR7726842 A FR 7726842A FR 2363789 A1 FR2363789 A1 FR 2363789A1
Authority
FR
France
Prior art keywords
colorimeter
unknown
color
optical system
inverting input
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.)
Withdrawn
Application number
FR7726842A
Other languages
English (en)
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.)
Sterndent Corp
Original Assignee
Sterndent Corp
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 Sterndent Corp filed Critical Sterndent Corp
Publication of FR2363789A1 publication Critical patent/FR2363789A1/fr
Withdrawn legal-status Critical Current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
    • G01J3/02—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
    • G01J3/08—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
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J3/50—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors
    • G01J3/51—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors using colour filters
    • 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
    • G01J3/52—Measurement of colour; Colour measuring devices, e.g. colorimeters using colour charts
    • G01J3/524—Calibration of colorimeters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
    • H03M1/0617—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence
    • H03M1/0624—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence by synchronisation
    • 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
    • G01J3/465—Measurement of colour; Colour measuring devices, e.g. colorimeters taking into account the colour perception of the eye; using tristimulus detection
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/50—Analogue/digital converters with intermediate conversion to time interval
    • H03M1/52—Input signal integrated with linear return to datum

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

La présente invention concerne un colorimètre trichromatique. Le colorimètre comprend un système optique 2 qui applique cycliquement, séquentiellement, à même photodétecteur 3 des faisceaux lumineux colorés inconnus et de référence. Les signaux électriques inconnus et de référence sont appliqués, après amplification et étalonnage par des circuits adaptés à chaque couleur 7, 8, 9 multiplexés, respectivement à l'entrée non inverseuse et à l'entrée inverseuse d'un intégrateur à double pente Il qui reçoit également, d'un circuit 18, un signal de compensation de l'erreur de réflectance du système optique. Le signal de sortie de l'intégrateur commande l'affichage visuel de valeurs numériques indicatives de l'intensité des couleurs du faisceau inconnu. Le colorimètre est applicable, notamment, à la mesure de la couleur des dents.
FR7726842A 1976-09-07 1977-09-05 Colorimetre trichromatique perfectionne Withdrawn FR2363789A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/721,108 US4125329A (en) 1976-09-07 1976-09-07 Tristimulus colorimeter

Publications (1)

Publication Number Publication Date
FR2363789A1 true FR2363789A1 (fr) 1978-03-31

Family

ID=24896577

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7726842A Withdrawn FR2363789A1 (fr) 1976-09-07 1977-09-05 Colorimetre trichromatique perfectionne

Country Status (5)

Country Link
US (2) US4125329A (fr)
JP (1) JPS5351785A (fr)
CA (1) CA1086981A (fr)
DE (1) DE2739794A1 (fr)
FR (1) FR2363789A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2415803A1 (fr) * 1978-01-25 1979-08-24 Kyoto Daiichi Kagaku Kk Procede et dispositif d'analyse quantitative a l'aide d'un papier pour essai d'identification par une reaction coloree

Families Citing this family (74)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2726606A1 (de) * 1977-06-13 1978-12-21 Max Planck Gesellschaft Medizinisches spektralfotometer
US4291975A (en) * 1979-10-03 1981-09-29 Scientific Gem Identification, Inc. Apparatus for determining the color characteristics of a gem
CH651664A5 (fr) * 1982-10-14 1985-09-30 Nestle Sa Procede et appareil de mesure de la brillance d'une couleur.
DE3244286C2 (de) * 1982-11-26 1985-07-18 Kollmorgen Technologies Corp., Dallas, Tex. Vorrichtung zum Erkennen der Farben von Proben und Liefern von Informationen in bezug auf deren Farbe
AU5098985A (en) * 1984-11-28 1986-06-18 Di Mattia Massimo A spectrum-photometer device for exactly determining the colour of a dental plate and of dental pluggings
US4630923A (en) * 1985-02-04 1986-12-23 The United States Of America As Represented By The United States Department Of Energy Fiberoptic spectrophotometer
US5158181A (en) * 1985-10-29 1992-10-27 Bailey Roger F Optical sorter
ATE61947T1 (de) * 1985-10-29 1991-04-15 Roger Frederick Bailey Optisches sortiergeraet.
FR2591470B1 (fr) * 1985-12-13 1992-05-15 Bertin & Cie Procede et dispositif de determination de la couleur, en particulier d'une prothese dentaire
US4773761A (en) * 1985-12-16 1988-09-27 Minolta Camera Kabushiki Kaisha Photoelectric colorimeter
US5015098A (en) * 1987-10-05 1991-05-14 X-Rite, Incorporated Densitometer with error correction
JPH03202731A (ja) * 1989-12-28 1991-09-04 Minolta Camera Co Ltd 色彩計
DE69115523T2 (de) * 1990-03-01 1996-06-13 X Rite Inc Kompensationsverfahren zur Verwendung in Farbmesseinrichtungen
US5082370A (en) * 1990-06-14 1992-01-21 Honeywell Inc. Industrial colorimeter having light intensity compensation means
US5117101A (en) * 1990-08-13 1992-05-26 Technostics Corporation Tristimulus color recognition system with means for compensating for variations in light source color
US5157465A (en) * 1990-10-11 1992-10-20 Kronberg James W Universal fiber-optic C.I.E. colorimeter
US5229841A (en) * 1991-07-10 1993-07-20 Eaton Corporation Color sensor employing optical fiber bundles with varied diameters
US5303037A (en) * 1992-02-24 1994-04-12 Eaton Corporation Color sensor illumination source employing a lightpipe and multiple LEDs
FR2701318B1 (fr) * 1993-02-09 1995-03-17 Inst Francais Du Petrole Dispositif perfectionné et méthode pour mesurer optiquement des caractéristiques d'une substance.
US5369494A (en) * 1993-04-12 1994-11-29 X-Rite, Incorporated Portable scanning colorimeter
JPH0772012A (ja) * 1993-09-06 1995-03-17 Minolta Co Ltd 測色装置
US5526285A (en) * 1993-10-04 1996-06-11 General Electric Company Imaging color sensor
US6681029B1 (en) 1993-11-18 2004-01-20 Digimarc Corporation Decoding steganographic messages embedded in media signals
US5513002A (en) * 1994-03-17 1996-04-30 The A.R.T. Group, Inc. Optical corona monitoring system
US5886783A (en) * 1994-03-17 1999-03-23 Shapanus; Vincent F. Apparatus for isolating light signals from adjacent fiber optical strands
US5552880A (en) * 1994-03-17 1996-09-03 A R T Group Inc Optical radiation probe
US5550629A (en) * 1994-03-17 1996-08-27 A R T Group Inc Method and apparatus for optically monitoring an electrical generator
US5764823A (en) * 1994-03-17 1998-06-09 A R T Group Inc Optical switch for isolating multiple fiber optic strands
US5550631A (en) * 1994-03-17 1996-08-27 A R T Group Inc Insulation doping system for monitoring the condition of electrical insulation
EP0781404A4 (fr) * 1994-09-14 1999-07-21 X Rite Inc Spectrophotometre compact
WO1996008703A1 (fr) * 1994-09-14 1996-03-21 X-Rite, Incorporated Colorimetre a balayage
US5699156A (en) * 1994-11-23 1997-12-16 Carver; David R. Spectrophotometer apparatus with dual light sources and optical paths, fiber optic pick-up and sample cell therefor
US7006661B2 (en) 1995-07-27 2006-02-28 Digimarc Corp Digital watermarking systems and methods
US6411725B1 (en) 1995-07-27 2002-06-25 Digimarc Corporation Watermark enabled video objects
US6408331B1 (en) 1995-07-27 2002-06-18 Digimarc Corporation Computer linking methods using encoded graphics
US5969812A (en) * 1995-10-18 1999-10-19 Carver; David R. Spectrophotometer apparatus with dual concentric beams and fiber optic beam splitter
US6373573B1 (en) 2000-03-13 2002-04-16 Lj Laboratories L.L.C. Apparatus for measuring optical characteristics of a substrate and pigments applied thereto
US5745229A (en) * 1996-01-02 1998-04-28 Lj Laboratories, L.L.C. Apparatus for determining optical characteristics of an object
US6254385B1 (en) 1997-01-02 2001-07-03 Lj Laboratories, Llc Apparatus and method for measuring optical characteristics of teeth
US5926262A (en) * 1997-07-01 1999-07-20 Lj Laboratories, L.L.C. Apparatus and method for measuring optical characteristics of an object
US6307629B1 (en) 1997-08-12 2001-10-23 Lj Laboratories, L.L.C. Apparatus and method for measuring optical characteristics of an object
US5880826A (en) 1997-07-01 1999-03-09 L J Laboratories, L.L.C. Apparatus and method for measuring optical characteristics of teeth
US6239868B1 (en) 1996-01-02 2001-05-29 Lj Laboratories, L.L.C. Apparatus and method for measuring optical characteristics of an object
US6118521A (en) * 1996-01-02 2000-09-12 Lj Laboratories, L.L.C. Apparatus and method for measuring optical characteristics of an object
US5966205A (en) 1997-07-01 1999-10-12 Lj Laboratories, Llc Method and apparatus for detecting and preventing counterfeiting
US5759030A (en) 1996-01-02 1998-06-02 Lj Laboratories, L.L.C. Method for determing optical characteristics of teeth
US6233047B1 (en) 1997-01-02 2001-05-15 Lj Laboratories, L.L.C. Apparatus and method for measuring optical characteristics of an object
US6301004B1 (en) 2000-05-31 2001-10-09 Lj Laboratories, L.L.C. Apparatus and method for measuring optical characteristics of an object
US6449041B1 (en) 1997-07-01 2002-09-10 Lj Laboratories, Llc Apparatus and method for measuring optical characteristics of an object
US6501542B2 (en) 1998-06-30 2002-12-31 Lj Laboratories, Llc Apparatus and method for measuring optical characteristics of an object
US6870616B2 (en) 1998-06-30 2005-03-22 Jjl Technologies Llc Spectrometer apparatus for determining an optical characteristic of an object or material having one or more sensors for determining a physical position or non-color property
US6271913B1 (en) 1997-07-01 2001-08-07 Lj Laboratories, Llc Apparatus and method for measuring optical characteristics of an object
US6518950B1 (en) 1997-10-07 2003-02-11 Interval Research Corporation Methods and systems for providing human/computer interfaces
US6256638B1 (en) 1998-04-14 2001-07-03 Interval Research Corporation Printable interfaces and digital linkmarks
AU9692098A (en) * 1997-10-10 1999-05-03 Interval Research Corporation Methods and systems for providing human/computer interfaces
US6246479B1 (en) 1998-06-08 2001-06-12 Lj Laboratories, L.L.C. Integrated spectrometer assembly and methods
US6246471B1 (en) 1998-06-08 2001-06-12 Lj Laboratories, Llc Apparatus and method for measuring optical characteristics of an object
US6573984B2 (en) 1998-06-30 2003-06-03 Lj Laboratories Llc Apparatus and method for measuring optical characteristics of teeth
US6249348B1 (en) 1998-11-23 2001-06-19 Lj Laboratories, L.L.C. Integrated spectrometer assembly and methods
US6538726B2 (en) 1998-07-10 2003-03-25 Lj Laboratories, Llc Apparatus and method for measuring optical characteristics of an object
EP1237464B1 (fr) 1999-12-08 2005-07-20 X-Rite Incorporated Dispositif de mesure optique
US6531691B1 (en) * 1999-12-15 2003-03-11 Northrop Grumman Corporation Method and system for optically testing a detector
US6362888B1 (en) 1999-12-23 2002-03-26 Lj Laboratories, L.L.C. Spectrometer assembly
US6519037B2 (en) 1999-12-23 2003-02-11 Lj Laboratories, Llc Spectrometer having optical unit including a randomized fiber optic implement
US6414750B2 (en) 2000-01-10 2002-07-02 Lj Laboratories, L.L.C. Spectrometric apparatus and method for measuring optical characteristics of an object
US7111168B2 (en) 2000-05-01 2006-09-19 Digimarc Corporation Digital watermarking systems
US6903813B2 (en) 2002-02-21 2005-06-07 Jjl Technologies Llc Miniaturized system and method for measuring optical characteristics
US8011033B2 (en) * 2005-04-08 2011-09-06 The Boeing Company Aircraft sink with integrated waste disposal function
US7876356B2 (en) * 2006-03-16 2011-01-25 Samsung Electronics Co., Ltd. Methods and systems for display color calibration using remote control
US8081162B2 (en) * 2007-05-16 2011-12-20 Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. Optical navigation device with surface and free space navigation
US7973768B2 (en) * 2007-11-16 2011-07-05 Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. Optical navigation device with consolidated processing for surface and free space navigation
KR101438194B1 (ko) * 2014-03-17 2014-11-04 (주)에이앤아이 실시간 영점조절이 가능한 색차계모듈 및 이를 이용한 색상계측기
US20150297308A1 (en) * 2014-04-18 2015-10-22 Enterogauge, Llc Enteroscope measuring device
CN112881446B (zh) * 2021-03-12 2025-04-11 公安部第一研究所 一种具有碟式斩波轮的点扫描装置

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1572377A (fr) * 1967-04-17 1969-06-27
US3566133A (en) * 1968-03-18 1971-02-23 Coulter Electronics A hemoglobin measuring method and apparatus having voltage following with feedback
US3664744A (en) * 1969-09-02 1972-05-23 Smith Kline Instr Log ratio circuit for double beam spectrophotometers
US3684378A (en) * 1970-09-04 1972-08-15 Joseph S Lord Dark current correction circuit for photosensing devices
FR2172074A1 (fr) * 1972-02-17 1973-09-28 Landis & Gyr Ag
US3765776A (en) * 1971-02-22 1973-10-16 F Bravenec Calibrated densitometer accommodating various color tones
US3952206A (en) * 1974-05-09 1976-04-20 Coulter Electronics, Inc. Photometer circuit
US3955096A (en) * 1975-06-19 1976-05-04 E. I. Du Pont De Nemours And Company Implicit ratio computer for sequential signals
US3975727A (en) * 1974-06-28 1976-08-17 Technicon Instruments Corporation Automated calibration and standardization apparatus

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2774276A (en) * 1951-08-28 1956-12-18 Du Pont Colorimeter
US3528749A (en) * 1966-12-09 1970-09-15 Itek Corp Apparatus for measuring optical density
DE1939034C2 (de) * 1969-07-31 1971-01-28 Bio Cal Instr Gmbh Photometer zum Durchfuehren von Messungen bei unterschiedlichen Wellenlaengen
JPS543973Y2 (fr) * 1973-03-02 1979-02-22
JPS50112519U (fr) * 1974-02-25 1975-09-13
US3986777A (en) * 1974-08-22 1976-10-19 Weber Dental Mfg. Co., Div. Of Sterndent Corporation Tristimulus colorimeter for use in the fabrication of artificial teeth
US4047819A (en) * 1975-04-10 1977-09-13 Smith Kline Instruments, Inc. Apparatus for measuring optical density with stray light compensation
US3973849A (en) * 1975-06-16 1976-08-10 International Business Machines Corporation Self-calibratable spectrum analyzer
JPS5243573A (en) * 1975-09-30 1977-04-05 Fukayama Kk Method of manufacturing box with raised bottom

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1572377A (fr) * 1967-04-17 1969-06-27
US3566133A (en) * 1968-03-18 1971-02-23 Coulter Electronics A hemoglobin measuring method and apparatus having voltage following with feedback
US3664744A (en) * 1969-09-02 1972-05-23 Smith Kline Instr Log ratio circuit for double beam spectrophotometers
US3684378A (en) * 1970-09-04 1972-08-15 Joseph S Lord Dark current correction circuit for photosensing devices
US3765776A (en) * 1971-02-22 1973-10-16 F Bravenec Calibrated densitometer accommodating various color tones
FR2172074A1 (fr) * 1972-02-17 1973-09-28 Landis & Gyr Ag
US3952206A (en) * 1974-05-09 1976-04-20 Coulter Electronics, Inc. Photometer circuit
US3975727A (en) * 1974-06-28 1976-08-17 Technicon Instruments Corporation Automated calibration and standardization apparatus
US3955096A (en) * 1975-06-19 1976-05-04 E. I. Du Pont De Nemours And Company Implicit ratio computer for sequential signals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2415803A1 (fr) * 1978-01-25 1979-08-24 Kyoto Daiichi Kagaku Kk Procede et dispositif d'analyse quantitative a l'aide d'un papier pour essai d'identification par une reaction coloree

Also Published As

Publication number Publication date
US4131367A (en) 1978-12-26
CA1086981A (fr) 1980-10-07
US4125329A (en) 1978-11-14
JPS5351785A (en) 1978-05-11
DE2739794A1 (de) 1978-03-16

Similar Documents

Publication Publication Date Title
CA1330717C (fr) Determination de concentrations au moyen de photometres flash a longueurs d'onde multiples
GB1466118A (en) System for determining the nature of optical distortion in glass
US3955096A (en) Implicit ratio computer for sequential signals
EP0186802A3 (fr) Dispositif de mesure optique
US4087690A (en) Spurious radiation compensation in infrared analyzers
SU1327801A3 (ru) Устройство дл измерени передачи света
EP0176826A3 (fr) Méthode et appareil pour la mesure de transmission spectrale à double faisceau
JPH01124745A (ja) 光透過率計
US4095098A (en) Ratiometric transparency meter
CA2089943A1 (fr) Capteur optique de champ magnetique
RU2096763C1 (ru) Спектральный анализатор
SU1087780A1 (ru) Двухлучевой дифференциальный фотометр
RU2123663C1 (ru) Цифровой оптико-электронный преобразователь размера
SU1434333A1 (ru) Способ измерени размеров микрочастиц
JPS6039974B2 (ja) 光学的検査
SU135256A1 (ru) Прибор дл измерени коэффициентов отражени плоских зеркально-отражающих поверхностей при падении на них света по нормали
SU1723455A1 (ru) Способ определени оптических характеристик образца и устройство дл его осуществлени
SU1481602A1 (ru) Прозрачномер
RU2094777C1 (ru) Оптико-спектральный анализатор
SU1402807A2 (ru) Устройство дл измерени малых зазоров
SU827983A1 (ru) Фотометр
SU1254847A1 (ru) Фотометр дл измерени прозрачности материалов
SU1700510A1 (ru) Способ определени прозрачности среды
SU1536280A1 (ru) Устройство дл измерени коэффициента отражени зеркала
RU2071041C1 (ru) Сигнальный процессор оптико-спектрального анализатора

Legal Events

Date Code Title Description
ST Notification of lapse