GB1337855A - Method and apparatus for measuring transmission of light along a path - Google Patents

Method and apparatus for measuring transmission of light along a path

Info

Publication number
GB1337855A
GB1337855A GB1747971A GB1747971A GB1337855A GB 1337855 A GB1337855 A GB 1337855A GB 1747971 A GB1747971 A GB 1747971A GB 1747971 A GB1747971 A GB 1747971A GB 1337855 A GB1337855 A GB 1337855A
Authority
GB
United Kingdom
Prior art keywords
pulse
ratio
pulses
calculator
clock
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
GB1747971A
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.)
Saab AB
Original Assignee
Saab Scania AB
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 Saab Scania AB filed Critical Saab Scania AB
Publication of GB1337855A publication Critical patent/GB1337855A/en
Expired 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
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
    • 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
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/86—Investigating moving sheets

Landscapes

  • Physics & Mathematics (AREA)
  • Biochemistry (AREA)
  • Analytical Chemistry (AREA)
  • Pathology (AREA)
  • Immunology (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
GB1747971A 1970-06-01 1971-05-27 Method and apparatus for measuring transmission of light along a path Expired GB1337855A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE751570A SE345023B (de) 1970-06-01 1970-06-01

Publications (1)

Publication Number Publication Date
GB1337855A true GB1337855A (en) 1973-11-21

Family

ID=20271573

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1747971A Expired GB1337855A (en) 1970-06-01 1971-05-27 Method and apparatus for measuring transmission of light along a path

Country Status (3)

Country Link
DE (1) DE2126030C3 (de)
GB (1) GB1337855A (de)
SE (1) SE345023B (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987006080A2 (en) * 1986-03-24 1987-10-08 Eastman Kodak Company Analog/digital converter apparatus for quantizing transmittance voltage signals

Also Published As

Publication number Publication date
DE2126030A1 (de) 1972-07-06
DE2126030B2 (de) 1974-02-07
SE345023B (de) 1972-05-08
DE2126030C3 (de) 1974-09-05

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees