FR809754A - Photomètre à cellule photoélectrique - Google Patents

Photomètre à cellule photoélectrique

Info

Publication number
FR809754A
FR809754A FR809754DA FR809754A FR 809754 A FR809754 A FR 809754A FR 809754D A FR809754D A FR 809754DA FR 809754 A FR809754 A FR 809754A
Authority
FR
France
Prior art keywords
photoelectric cell
cell photometer
photometer
photoelectric
cell
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.)
Metrawatt AG
Original Assignee
Metrawatt 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 Metrawatt AG filed Critical Metrawatt AG
Application granted granted Critical
Publication of FR809754A publication Critical patent/FR809754A/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)
FR809754D 1935-08-31 1936-08-27 Photomètre à cellule photoélectrique Expired FR809754A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE809754X 1935-08-31

Publications (1)

Publication Number Publication Date
FR809754A true FR809754A (fr) 1937-03-10

Family

ID=6723398

Family Applications (1)

Application Number Title Priority Date Filing Date
FR809754D Expired FR809754A (fr) 1935-08-31 1936-08-27 Photomètre à cellule photoélectrique

Country Status (1)

Country Link
FR (1) FR809754A (fr)

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