FR1041028A - Appareil de mesure photo-électrique - Google Patents

Appareil de mesure photo-électrique

Info

Publication number
FR1041028A
FR1041028A FR1041028DA FR1041028A FR 1041028 A FR1041028 A FR 1041028A FR 1041028D A FR1041028D A FR 1041028DA FR 1041028 A FR1041028 A FR 1041028A
Authority
FR
France
Prior art keywords
measuring device
photoelectric measuring
photoelectric
measuring
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
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.)
WEKA AG
Original Assignee
WEKA AG
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 WEKA AG filed Critical WEKA AG
Application granted granted Critical
Publication of FR1041028A publication Critical patent/FR1041028A/fr
Expired legal-status Critical Current

Links

Classifications

    • 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)
FR1041028D 1950-08-03 1951-07-31 Appareil de mesure photo-électrique Expired FR1041028A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1041028X 1950-08-03

Publications (1)

Publication Number Publication Date
FR1041028A true FR1041028A (fr) 1953-10-20

Family

ID=4554283

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1041028D Expired FR1041028A (fr) 1950-08-03 1951-07-31 Appareil de mesure photo-électrique

Country Status (1)

Country Link
FR (1) FR1041028A (fr)

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