FR877097A - Posemètre photoélectrique avec résistance semi-conductrice - Google Patents

Posemètre photoélectrique avec résistance semi-conductrice

Info

Publication number
FR877097A
FR877097A FR877097DA FR877097A FR 877097 A FR877097 A FR 877097A FR 877097D A FR877097D A FR 877097DA FR 877097 A FR877097 A FR 877097A
Authority
FR
France
Prior art keywords
light meter
semiconductor resistance
photoelectric light
photoelectric
semiconductor
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie 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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Application granted granted Critical
Publication of FR877097A publication Critical patent/FR877097A/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)
FR877097D 1940-11-27 1941-11-19 Posemètre photoélectrique avec résistance semi-conductrice Expired FR877097A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE877097X 1940-11-27

Publications (1)

Publication Number Publication Date
FR877097A true FR877097A (fr) 1942-11-26

Family

ID=6817933

Family Applications (1)

Application Number Title Priority Date Filing Date
FR877097D Expired FR877097A (fr) 1940-11-27 1941-11-19 Posemètre photoélectrique avec résistance semi-conductrice

Country Status (1)

Country Link
FR (1) FR877097A (fr)

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