FR851472A - Posemètre photo-électrique - Google Patents

Posemètre photo-électrique

Info

Publication number
FR851472A
FR851472A FR851472DA FR851472A FR 851472 A FR851472 A FR 851472A FR 851472D A FR851472D A FR 851472DA FR 851472 A FR851472 A FR 851472A
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.)
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 FR851472A publication Critical patent/FR851472A/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
    • G01J1/4219—Photoelectric exposure meters for determining the exposure time in recording or reproducing specially adapted for enlargers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
FR851472D 1938-03-11 1939-03-10 Posemètre photo-électrique Expired FR851472A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE851472X 1938-03-11

Publications (1)

Publication Number Publication Date
FR851472A true FR851472A (fr) 1940-01-09

Family

ID=6781264

Family Applications (1)

Application Number Title Priority Date Filing Date
FR851472D Expired FR851472A (fr) 1938-03-11 1939-03-10 Posemètre photo-électrique

Country Status (1)

Country Link
FR (1) FR851472A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1080318B (de) * 1958-03-01 1960-04-21 Voigtlaender Ag Lichtschwaechungseinrichtung fuer photographische Zwecke
DE1110906B (de) * 1956-04-03 1961-07-13 Agfa Ag Lichtmesseinrichtung mit seitlich zum Lichtstrahlengang angeordnetem Lichtempfaenger
DE1151133B (de) * 1958-05-14 1963-07-04 Reichert Optische Werke Ag Photoelektrischer Belichtungsmesser fuer Mikroskope

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1110906B (de) * 1956-04-03 1961-07-13 Agfa Ag Lichtmesseinrichtung mit seitlich zum Lichtstrahlengang angeordnetem Lichtempfaenger
DE1080318B (de) * 1958-03-01 1960-04-21 Voigtlaender Ag Lichtschwaechungseinrichtung fuer photographische Zwecke
DE1151133B (de) * 1958-05-14 1963-07-04 Reichert Optische Werke Ag Photoelektrischer Belichtungsmesser fuer Mikroskope

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