FR1424524A - Photometric balance measuring method and device - Google Patents

Photometric balance measuring method and device

Info

Publication number
FR1424524A
FR1424524A FR997134A FR997134A FR1424524A FR 1424524 A FR1424524 A FR 1424524A FR 997134 A FR997134 A FR 997134A FR 997134 A FR997134 A FR 997134A FR 1424524 A FR1424524 A FR 1424524A
Authority
FR
France
Prior art keywords
measuring method
balance measuring
photometric balance
photometric
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
FR997134A
Other languages
French (fr)
Inventor
Ducluzeaud
Pericard
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
Priority to FR997134A priority Critical patent/FR1424524A/en
Application granted granted Critical
Publication of FR1424524A publication Critical patent/FR1424524A/en
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
    • G01J1/20—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle
    • G01J1/34—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle using separate light paths used alternately or sequentially, e.g. flicker
    • G01J1/36—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle using separate light paths used alternately or sequentially, e.g. flicker using electric radiation detectors
    • 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)
FR997134A 1964-12-02 1964-12-02 Photometric balance measuring method and device Expired FR1424524A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR997134A FR1424524A (en) 1964-12-02 1964-12-02 Photometric balance measuring method and device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR997134A FR1424524A (en) 1964-12-02 1964-12-02 Photometric balance measuring method and device

Publications (1)

Publication Number Publication Date
FR1424524A true FR1424524A (en) 1966-01-14

Family

ID=8843864

Family Applications (1)

Application Number Title Priority Date Filing Date
FR997134A Expired FR1424524A (en) 1964-12-02 1964-12-02 Photometric balance measuring method and device

Country Status (1)

Country Link
FR (1) FR1424524A (en)

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