CA930191A - Photometer - Google Patents

Photometer

Info

Publication number
CA930191A
CA930191A CA104436A CA104436A CA930191A CA 930191 A CA930191 A CA 930191A CA 104436 A CA104436 A CA 104436A CA 104436 A CA104436 A CA 104436A CA 930191 A CA930191 A CA 930191A
Authority
CA
Canada
Prior art keywords
photometer
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
CA104436A
Other versions
CA104436S (en
Inventor
J. Alho Pentti
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.)
INSINOORITOIMISTO DATEX Oy
Original Assignee
INSINOORITOIMISTO DATEX Oy
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 INSINOORITOIMISTO DATEX Oy filed Critical INSINOORITOIMISTO DATEX Oy
Application granted granted Critical
Publication of CA930191A publication Critical patent/CA930191A/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
    • G01N21/255—Details, e.g. use of specially adapted sources, lighting or optical systems
    • 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
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
    • G01J1/16—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void using electric radiation detectors
    • G01J1/1626—Arrangements with two photodetectors, the signals of which are compared

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
CA104436A 1970-02-05 1971-02-04 Photometer Expired CA930191A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI31970A FI46099C (en) 1970-02-05 1970-02-05 Photometers.

Publications (1)

Publication Number Publication Date
CA930191A true CA930191A (en) 1973-07-17

Family

ID=8503931

Family Applications (1)

Application Number Title Priority Date Filing Date
CA104436A Expired CA930191A (en) 1970-02-05 1971-02-04 Photometer

Country Status (6)

Country Link
CA (1) CA930191A (en)
DE (1) DE2105486A1 (en)
FI (1) FI46099C (en)
FR (1) FR2079267B3 (en)
GB (1) GB1304326A (en)
SE (1) SE359162B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2195022B1 (en) * 1972-08-02 1976-01-23 Cometa Fr
CA1201606A (en) * 1983-01-27 1986-03-11 Donald L. Kramer Photometric device

Also Published As

Publication number Publication date
DE2105486A1 (en) 1971-08-26
FR2079267A3 (en) 1971-11-12
FI46099B (en) 1972-08-31
GB1304326A (en) 1973-01-24
FI46099C (en) 1972-12-11
FR2079267B3 (en) 1973-10-19
SE359162B (en) 1973-08-20

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