NL7703570A - Identification system for bodies containing luminous material - uses intensity-wavelength distribution in emission spectrum for testing - Google Patents

Identification system for bodies containing luminous material - uses intensity-wavelength distribution in emission spectrum for testing

Info

Publication number
NL7703570A
NL7703570A NL7703570A NL7703570A NL7703570A NL 7703570 A NL7703570 A NL 7703570A NL 7703570 A NL7703570 A NL 7703570A NL 7703570 A NL7703570 A NL 7703570A NL 7703570 A NL7703570 A NL 7703570A
Authority
NL
Netherlands
Prior art keywords
photodetector
different
identification system
signal level
bodies containing
Prior art date
Application number
NL7703570A
Other languages
Dutch (nl)
Original Assignee
Applied Photophysics 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
Application filed by Applied Photophysics Ltd filed Critical Applied Photophysics Ltd
Priority to NL7703570A priority Critical patent/NL7703570A/en
Publication of NL7703570A publication Critical patent/NL7703570A/en

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
    • G01N21/64—Fluorescence; Phosphorescence
    • G01N21/645—Specially adapted constructive features of fluorimeters
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/12—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using a selected wavelength, e.g. to sense red marks and ignore blue marks
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • 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
    • G01N21/64—Fluorescence; Phosphorescence
    • G01N2021/6417—Spectrofluorimetric devices
    • G01N2021/6421—Measuring at two or more wavelengths
    • 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
    • G01N21/64—Fluorescence; Phosphorescence
    • G01N21/645—Specially adapted constructive features of fluorimeters
    • G01N2021/6484—Optical fibres

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • Analytical Chemistry (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Electromagnetism (AREA)
  • Toxicology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

The identification system for bodies containing luminous or fluorescent material uses an induction radiation source for directing this onto a body in the testing station. The luminous material is induced to emit light radiation which in the event of different wave lengths is picked up at the same time by numerous optical systems (24, 25, 26) and passed to relevant photodetectors (18, 19, 20). Each optical system is associated with an optical filter (21, 22, 23) so as to transfer to the associated photodetector a different selected wavelength or range of wavelengths from those wavelengths which are sent to a different photodetector. Each photodetector produces an output signal which linearly changes its level according to the intensity of the emitted light ray which falls on this. The signal level of a photodetector is altered by attenuation or amplification and the altered signal level is compared with the signal level derived from a different photodetector.
NL7703570A 1977-04-01 1977-04-01 Identification system for bodies containing luminous material - uses intensity-wavelength distribution in emission spectrum for testing NL7703570A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL7703570A NL7703570A (en) 1977-04-01 1977-04-01 Identification system for bodies containing luminous material - uses intensity-wavelength distribution in emission spectrum for testing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7703570A NL7703570A (en) 1977-04-01 1977-04-01 Identification system for bodies containing luminous material - uses intensity-wavelength distribution in emission spectrum for testing

Publications (1)

Publication Number Publication Date
NL7703570A true NL7703570A (en) 1978-10-03

Family

ID=19828288

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7703570A NL7703570A (en) 1977-04-01 1977-04-01 Identification system for bodies containing luminous material - uses intensity-wavelength distribution in emission spectrum for testing

Country Status (1)

Country Link
NL (1) NL7703570A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5733987A (en) * 1992-03-13 1998-03-31 Montell Technology Company Process for the gas-phase polymerization of olefins

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5733987A (en) * 1992-03-13 1998-03-31 Montell Technology Company Process for the gas-phase polymerization of olefins

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Legal Events

Date Code Title Description
BA A request for search or an international-type search has been filed
A85 Still pending on 85-01-01
BB A search report has been drawn up
BC A request for examination has been filed
BV The patent application has lapsed