FR879317A - Electric light meter - Google Patents

Electric light meter

Info

Publication number
FR879317A
FR879317A FR879317DA FR879317A FR 879317 A FR879317 A FR 879317A FR 879317D A FR879317D A FR 879317DA FR 879317 A FR879317 A FR 879317A
Authority
FR
France
Prior art keywords
electric light
light meter
meter
electric
light
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
Laszlo Riszdorfer
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 FR879317A publication Critical patent/FR879317A/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)
FR879317D 1939-08-26 1942-02-16 Electric light meter Expired FR879317A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HU879317X 1939-08-26

Publications (1)

Publication Number Publication Date
FR879317A true FR879317A (en) 1943-02-19

Family

ID=10980791

Family Applications (1)

Application Number Title Priority Date Filing Date
FR879317D Expired FR879317A (en) 1939-08-26 1942-02-16 Electric light meter

Country Status (1)

Country Link
FR (1) FR879317A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1177924B (en) * 1961-08-16 1964-09-10 Studio Ges Fuer Ind Und Modeph Photographic or cinematographic recording device with built-in light meter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1177924B (en) * 1961-08-16 1964-09-10 Studio Ges Fuer Ind Und Modeph Photographic or cinematographic recording device with built-in light meter

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