FR1326138A - Photo-electric light meter - Google Patents

Photo-electric light meter

Info

Publication number
FR1326138A
FR1326138A FR901589A FR901589A FR1326138A FR 1326138 A FR1326138 A FR 1326138A FR 901589 A FR901589 A FR 901589A FR 901589 A FR901589 A FR 901589A FR 1326138 A FR1326138 A FR 1326138A
Authority
FR
France
Prior art keywords
photo
electric light
light meter
meter
electric
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
FR901589A
Other languages
French (fr)
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.)
Ernst Leitz Wetzlar GmbH
Original Assignee
Ernst Leitz Wetzlar GmbH
Ernst Leitz GmbH
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 Ernst Leitz Wetzlar GmbH, Ernst Leitz GmbH filed Critical Ernst Leitz Wetzlar GmbH
Priority to FR901589A priority Critical patent/FR1326138A/en
Application granted granted Critical
Publication of FR1326138A publication Critical patent/FR1326138A/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)
FR901589A 1962-06-22 1962-06-22 Photo-electric light meter Expired FR1326138A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR901589A FR1326138A (en) 1962-06-22 1962-06-22 Photo-electric light meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR901589A FR1326138A (en) 1962-06-22 1962-06-22 Photo-electric light meter

Publications (1)

Publication Number Publication Date
FR1326138A true FR1326138A (en) 1963-05-03

Family

ID=8781605

Family Applications (1)

Application Number Title Priority Date Filing Date
FR901589A Expired FR1326138A (en) 1962-06-22 1962-06-22 Photo-electric light meter

Country Status (1)

Country Link
FR (1) FR1326138A (en)

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