FR853453A - Direct reading photoelectric light meter - Google Patents

Direct reading photoelectric light meter

Info

Publication number
FR853453A
FR853453A FR853453DA FR853453A FR 853453 A FR853453 A FR 853453A FR 853453D A FR853453D A FR 853453DA FR 853453 A FR853453 A FR 853453A
Authority
FR
France
Prior art keywords
direct reading
light meter
photoelectric light
reading photoelectric
meter
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
French (fr)
Inventor
Guy Bienaime Auguste Le Boeuf
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
Application granted granted Critical
Publication of FR853453A publication Critical patent/FR853453A/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
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/4209—Photoelectric exposure meters for determining the exposure time in recording or reproducing
    • G01J1/4214—Photoelectric exposure meters for determining the exposure time in recording or reproducing specially adapted for view-taking apparatus

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
FR853453D 1939-04-25 1939-04-25 Direct reading photoelectric light meter Expired FR853453A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR853453T 1939-04-25

Publications (1)

Publication Number Publication Date
FR853453A true FR853453A (en) 1940-03-20

Family

ID=9327100

Family Applications (1)

Application Number Title Priority Date Filing Date
FR853453D Expired FR853453A (en) 1939-04-25 1939-04-25 Direct reading photoelectric light meter

Country Status (1)

Country Link
FR (1) FR853453A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1094999B (en) * 1955-05-14 1960-12-15 Dresden Feinmess Moving coil meter with external magnet for photoelectric exposure meters

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1094999B (en) * 1955-05-14 1960-12-15 Dresden Feinmess Moving coil meter with external magnet for photoelectric exposure meters

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