FR798740A - Posemètre photoélectrique - Google Patents

Posemètre photoélectrique

Info

Publication number
FR798740A
FR798740A FR798740DA FR798740A FR 798740 A FR798740 A FR 798740A FR 798740D A FR798740D A FR 798740DA FR 798740 A FR798740 A FR 798740A
Authority
FR
France
Prior art keywords
light meter
photoelectric light
photoelectric
meter
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
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 FR798740A publication Critical patent/FR798740A/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)
FR798740D 1935-02-11 1935-12-05 Posemètre photoélectrique Expired FR798740A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE798740X 1935-02-11

Publications (1)

Publication Number Publication Date
FR798740A true FR798740A (fr) 1936-05-25

Family

ID=6711474

Family Applications (1)

Application Number Title Priority Date Filing Date
FR798740D Expired FR798740A (fr) 1935-02-11 1935-12-05 Posemètre photoélectrique

Country Status (1)

Country Link
FR (1) FR798740A (fr)

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