GB1384501A - Apparatus for comparing the spectral reflectance of coloured surfaces - Google Patents

Apparatus for comparing the spectral reflectance of coloured surfaces

Info

Publication number
GB1384501A
GB1384501A GB661773A GB661773A GB1384501A GB 1384501 A GB1384501 A GB 1384501A GB 661773 A GB661773 A GB 661773A GB 661773 A GB661773 A GB 661773A GB 1384501 A GB1384501 A GB 1384501A
Authority
GB
United Kingdom
Prior art keywords
output
light
circuit
dividing circuit
test specimen
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
Application number
GB661773A
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.)
Landis and Gyr AG
Original Assignee
Landis and Gyr AG
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 Landis and Gyr AG filed Critical Landis and Gyr AG
Publication of GB1384501A publication Critical patent/GB1384501A/en
Expired 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
    • G01J3/46—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
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
    • G07D7/12—Visible light, infrared or ultraviolet radiation
    • 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
    • G01J3/501—Colorimeters using spectrally-selective light sources, e.g. LEDs

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
GB661773A 1972-02-17 1973-02-09 Apparatus for comparing the spectral reflectance of coloured surfaces Expired GB1384501A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH230472A CH541840A (de) 1972-02-17 1972-02-17 Vorrichtung zum Vergleich der spektralen Remission farbiger Flächen

Publications (1)

Publication Number Publication Date
GB1384501A true GB1384501A (en) 1975-02-19

Family

ID=4230658

Family Applications (1)

Application Number Title Priority Date Filing Date
GB661773A Expired GB1384501A (en) 1972-02-17 1973-02-09 Apparatus for comparing the spectral reflectance of coloured surfaces

Country Status (12)

Country Link
AT (1) AT321619B (enExample)
BE (1) BE795553A (enExample)
CH (1) CH541840A (enExample)
DE (1) DE2247205C3 (enExample)
DK (1) DK144605C (enExample)
ES (1) ES411639A1 (enExample)
FR (1) FR2172074B1 (enExample)
GB (1) GB1384501A (enExample)
IT (1) IT979043B (enExample)
NL (1) NL145356B (enExample)
NO (1) NO138302C (enExample)
SE (1) SE392177B (enExample)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4455090A (en) * 1979-07-26 1984-06-19 The Wiggins Teape Group Limited Apparatus for measuring surface reflectance characteristics
GB2192275A (en) * 1986-06-17 1988-01-06 Laurel Bank Machine Co Paper money discriminator
GB2272762A (en) * 1992-11-13 1994-05-25 Laurel Bank Machine Co Pattern detecting apparatus
AT402861B (de) * 1994-03-28 1997-09-25 Oesterr Forsch Seibersdorf Verfahren und anordnung zum erkennen bzw. zur kontrolle von flächenstrukturen bzw. der oberflächenbeschaffenheit
US5764346A (en) * 1994-09-29 1998-06-09 Mars Incorporated Apparatus for handling value sheets
US5889883A (en) * 1995-01-23 1999-03-30 Mars Incorporated Method and apparatus for optical sensor system and optical interface circuit
US6070710A (en) * 1997-12-10 2000-06-06 Mars Incorporated Photoelectric measurement method and apparatus and banknote validation

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4125329A (en) * 1976-09-07 1978-11-14 Sterndent Corporation Tristimulus colorimeter
CH634411A5 (en) * 1978-10-10 1983-01-31 Sodeco Compteurs De Geneve Method for determining suitable optical wavelengths, for distinguishing test objects optically, and appliance required therefor and application of the method
NL8202920A (nl) * 1982-07-20 1984-02-16 Tno Inrichting voor het herkennen en onderzoeken van bladvormige voorwerpen zoals bankbiljetten of dergelijke.
WO1985002928A1 (en) * 1983-12-27 1985-07-04 Bergstroem Arne Apparatus for authenticating bank notes
JPS63145926A (ja) * 1986-12-10 1988-06-18 Hoya Corp カラ−センサ

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3451254A (en) * 1965-07-26 1969-06-24 Automation Ind Inc Nondestructive tester
US3480785A (en) * 1965-07-26 1969-11-25 Vendit Inc Method and apparatus for validating documents by spectral analysis of light reflected therefrom
CH484479A (de) * 1969-06-12 1970-01-15 Landis & Gyr Ag Vorrichtung zur optischen Echtheitsprüfung von Banknoten und anderen Wertzeichen

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4455090A (en) * 1979-07-26 1984-06-19 The Wiggins Teape Group Limited Apparatus for measuring surface reflectance characteristics
GB2192275A (en) * 1986-06-17 1988-01-06 Laurel Bank Machine Co Paper money discriminator
GB2192275B (en) * 1986-06-17 1990-09-26 Laurel Bank Machine Co Paper money discriminator
GB2272762A (en) * 1992-11-13 1994-05-25 Laurel Bank Machine Co Pattern detecting apparatus
GB2272762B (en) * 1992-11-13 1996-10-16 Laurel Bank Machine Co Pattern detecting apparatus
US5576825A (en) * 1992-11-13 1996-11-19 Laurel Bank Machines Co., Ltd. Pattern detecting apparatus
AT402861B (de) * 1994-03-28 1997-09-25 Oesterr Forsch Seibersdorf Verfahren und anordnung zum erkennen bzw. zur kontrolle von flächenstrukturen bzw. der oberflächenbeschaffenheit
US5764346A (en) * 1994-09-29 1998-06-09 Mars Incorporated Apparatus for handling value sheets
US5889883A (en) * 1995-01-23 1999-03-30 Mars Incorporated Method and apparatus for optical sensor system and optical interface circuit
US6819781B1 (en) 1995-01-23 2004-11-16 Mars Incorporated Method and apparatus for optical sensor system and optical interface circuit
US6070710A (en) * 1997-12-10 2000-06-06 Mars Incorporated Photoelectric measurement method and apparatus and banknote validation

Also Published As

Publication number Publication date
DE2247205B2 (de) 1974-07-11
DK144605B (da) 1982-04-13
ES411639A1 (es) 1976-01-01
DK144605C (da) 1982-09-20
AT321619B (de) 1975-04-10
IT979043B (it) 1974-09-30
NO138302C (no) 1978-08-09
NL145356B (nl) 1975-03-17
NO138302B (no) 1978-05-02
FR2172074B1 (enExample) 1976-01-30
NL7204746A (enExample) 1973-08-21
DE2247205A1 (de) 1973-08-30
FR2172074A1 (enExample) 1973-09-28
DE2247205C3 (de) 1975-03-06
BE795553A (fr) 1973-06-18
CH541840A (de) 1973-09-15
SE392177B (sv) 1977-03-14

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee