FR798739A - Posemètre photo-électrique perfectionné - Google Patents

Posemètre photo-électrique perfectionné

Info

Publication number
FR798739A
FR798739A FR798739DA FR798739A FR 798739 A FR798739 A FR 798739A FR 798739D A FR798739D A FR 798739DA FR 798739 A FR798739 A FR 798739A
Authority
FR
France
Prior art keywords
light meter
photoelectric light
advanced photoelectric
advanced
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
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.)
Zeiss Ikon AG
Original Assignee
Zeiss Ikon 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 Zeiss Ikon AG filed Critical Zeiss Ikon AG
Application granted granted Critical
Publication of FR798739A publication Critical patent/FR798739A/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
    • G01J1/42—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)
FR798739D 1935-01-11 1935-12-05 Posemètre photo-électrique perfectionné Expired FR798739A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE798739X 1935-01-11

Publications (1)

Publication Number Publication Date
FR798739A true FR798739A (fr) 1936-05-25

Family

ID=6711473

Family Applications (1)

Application Number Title Priority Date Filing Date
FR798739D Expired FR798739A (fr) 1935-01-11 1935-12-05 Posemètre photo-électrique perfectionné

Country Status (1)

Country Link
FR (1) FR798739A (fr)

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