GB1304326A - - Google Patents

Info

Publication number
GB1304326A
GB1304326A GB2107071A GB2107071A GB1304326A GB 1304326 A GB1304326 A GB 1304326A GB 2107071 A GB2107071 A GB 2107071A GB 2107071 A GB2107071 A GB 2107071A GB 1304326 A GB1304326 A GB 1304326A
Authority
GB
United Kingdom
Prior art keywords
bridge
sample
photo
meter
balance
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
GB2107071A
Other languages
English (en)
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 filed Critical
Publication of GB1304326A publication Critical patent/GB1304326A/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)
GB2107071A 1970-02-05 1971-04-19 Expired GB1304326A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI31970A FI46099C (fi) 1970-02-05 1970-02-05 Fotometri.

Publications (1)

Publication Number Publication Date
GB1304326A true GB1304326A (enrdf_load_stackoverflow) 1973-01-24

Family

ID=8503931

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2107071A Expired GB1304326A (enrdf_load_stackoverflow) 1970-02-05 1971-04-19

Country Status (6)

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

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2195022B1 (enrdf_load_stackoverflow) * 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
CA930191A (en) 1973-07-17
FR2079267A3 (enrdf_load_stackoverflow) 1971-11-12
SE359162B (enrdf_load_stackoverflow) 1973-08-20
FR2079267B3 (enrdf_load_stackoverflow) 1973-10-19
FI46099C (fi) 1972-12-11
FI46099B (enrdf_load_stackoverflow) 1972-08-31
DE2105486A1 (de) 1971-08-26

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Legal Events

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