FR847731A - Photomètre photo-électrique - Google Patents

Photomètre photo-électrique

Info

Publication number
FR847731A
FR847731A FR847731DA FR847731A FR 847731 A FR847731 A FR 847731A FR 847731D A FR847731D A FR 847731DA FR 847731 A FR847731 A FR 847731A
Authority
FR
France
Prior art keywords
photoelectric photometer
photometer
photoelectric
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 FR847731A publication Critical patent/FR847731A/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)
FR847731D 1937-12-20 1938-12-19 Photomètre photo-électrique Expired FR847731A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE847731X 1937-12-20

Publications (1)

Publication Number Publication Date
FR847731A true FR847731A (fr) 1939-10-16

Family

ID=6775399

Family Applications (1)

Application Number Title Priority Date Filing Date
FR847731D Expired FR847731A (fr) 1937-12-20 1938-12-19 Photomètre photo-électrique

Country Status (1)

Country Link
FR (1) FR847731A (fr)

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