GB2256923A - Detection apparatus - Google Patents

Detection apparatus

Info

Publication number
GB2256923A
GB2256923A GB9214031A GB9214031A GB2256923A GB 2256923 A GB2256923 A GB 2256923A GB 9214031 A GB9214031 A GB 9214031A GB 9214031 A GB9214031 A GB 9214031A GB 2256923 A GB2256923 A GB 2256923A
Authority
GB
United Kingdom
Prior art keywords
light
sample
raman
source
scattered
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.)
Granted
Application number
GB9214031A
Other versions
GB9214031D0 (en
GB2256923B (en
Inventor
Robin Bratchley
David Neville Batchelder
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.)
De la Rue International Ltd
Original Assignee
Thomas De la Rue and Co Ltd
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
Priority claimed from GB909002335A external-priority patent/GB9002335D0/en
Application filed by Thomas De la Rue and Co Ltd filed Critical Thomas De la Rue and Co Ltd
Priority to GB9214031A priority Critical patent/GB2256923B/en
Publication of GB9214031D0 publication Critical patent/GB9214031D0/en
Publication of GB2256923A publication Critical patent/GB2256923A/en
Application granted granted Critical
Publication of GB2256923B publication Critical patent/GB2256923B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/65—Raman scattering
    • 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
    • G07D7/121—Apparatus characterised by sensor details
    • 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
    • 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
    • G07D7/1205—Testing spectral properties
    • 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
    • G07D7/20—Testing patterns thereon

Landscapes

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

Abstract

Apparatus that can be used to authenticate a security item or otherwise analyse a sample (S) containing a Raman-active material, comprises a substantially monochromatic light source (L); means (M1, F1, F2, O) for directing the source light onto the sample; means (F2) for separating the source light from the radiation emitted from and/or scattered by the sample; means adapted to discriminate (F3) between the Raman-scattered light and light of a neighbouring wavelength; and one or more deflectors (PM) for the respective discriminated radiations. The apparatus allows a distinction to be drawn between the Raman scattering and background fluorescence.
GB9214031A 1990-02-02 1992-07-01 Detection apparatus Expired - Fee Related GB2256923B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9214031A GB2256923B (en) 1990-02-02 1992-07-01 Detection apparatus

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB909002335A GB9002335D0 (en) 1990-02-02 1990-02-02 Detection apparatus
PCT/GB1990/002032 WO1991011703A1 (en) 1990-02-02 1990-12-28 Detection apparatus
GB9214031A GB2256923B (en) 1990-02-02 1992-07-01 Detection apparatus

Publications (3)

Publication Number Publication Date
GB9214031D0 GB9214031D0 (en) 1992-09-23
GB2256923A true GB2256923A (en) 1992-12-23
GB2256923B GB2256923B (en) 1993-09-22

Family

ID=26296590

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9214031A Expired - Fee Related GB2256923B (en) 1990-02-02 1992-07-01 Detection apparatus

Country Status (1)

Country Link
GB (1) GB2256923B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2273770A (en) * 1990-04-24 1994-06-29 Gersan Ets Method and apparatus for examining a gemstone
US5638173A (en) * 1994-05-24 1997-06-10 Renishaw Plc Spectrum splitting spectroscopic apparatus
US6091491A (en) * 1997-07-24 2000-07-18 Ciba Specialty Chemicals Corporation Optical fingerprinting of plastics compositions
CN108181295A (en) * 2018-01-24 2018-06-19 华南师范大学 The identification of cosmic ray Spike and modification method in Raman spectroscopy data

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4586819A (en) * 1982-07-09 1986-05-06 Hitachi, Ltd. Laser Raman microprobe
WO1988001730A1 (en) * 1986-08-27 1988-03-10 The Australian National University Method and apparatus for distinguishing photoluminescent and reflecting surfaces in forensic science applications
JPS6413132A (en) * 1987-06-15 1989-01-18 Sharp Kk Automatic original conveying device
EP0314312A2 (en) * 1987-10-26 1989-05-03 De La Rue Systems Limited Method and apparatus for detecting inks

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4586819A (en) * 1982-07-09 1986-05-06 Hitachi, Ltd. Laser Raman microprobe
WO1988001730A1 (en) * 1986-08-27 1988-03-10 The Australian National University Method and apparatus for distinguishing photoluminescent and reflecting surfaces in forensic science applications
JPS6413132A (en) * 1987-06-15 1989-01-18 Sharp Kk Automatic original conveying device
EP0314312A2 (en) * 1987-10-26 1989-05-03 De La Rue Systems Limited Method and apparatus for detecting inks

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Patent Abstracts of Japan, vol.9.no.265.(P-399)(1988). 23 October 1985 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2273770A (en) * 1990-04-24 1994-06-29 Gersan Ets Method and apparatus for examining a gemstone
GB2273770B (en) * 1990-04-24 1994-10-26 Gersan Ets Method and apparatus for examining a gemstone
US5638173A (en) * 1994-05-24 1997-06-10 Renishaw Plc Spectrum splitting spectroscopic apparatus
US6091491A (en) * 1997-07-24 2000-07-18 Ciba Specialty Chemicals Corporation Optical fingerprinting of plastics compositions
CN108181295A (en) * 2018-01-24 2018-06-19 华南师范大学 The identification of cosmic ray Spike and modification method in Raman spectroscopy data

Also Published As

Publication number Publication date
GB9214031D0 (en) 1992-09-23
GB2256923B (en) 1993-09-22

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Legal Events

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

Effective date: 20031228