FR2332551A1 - Dispositif pour le reglage automatique de l'exposition pour des appareils de prises de vues en continu sur microfilms - Google Patents

Dispositif pour le reglage automatique de l'exposition pour des appareils de prises de vues en continu sur microfilms

Info

Publication number
FR2332551A1
FR2332551A1 FR7633742A FR7633742A FR2332551A1 FR 2332551 A1 FR2332551 A1 FR 2332551A1 FR 7633742 A FR7633742 A FR 7633742A FR 7633742 A FR7633742 A FR 7633742A FR 2332551 A1 FR2332551 A1 FR 2332551A1
Authority
FR
France
Prior art keywords
microfilms
continuous shooting
automatic exposure
exposure adjustment
shooting equipment
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.)
Granted
Application number
FR7633742A
Other languages
English (en)
Other versions
FR2332551B1 (fr
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.)
Agfa Gevaert AG
Original Assignee
Agfa Gevaert 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 Agfa Gevaert AG filed Critical Agfa Gevaert AG
Publication of FR2332551A1 publication Critical patent/FR2332551A1/fr
Application granted granted Critical
Publication of FR2332551B1 publication Critical patent/FR2332551B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00—Photographic printing apparatus
    • G03B27/72—Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus
    • G03B27/80—Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus in dependence upon automatic analysis of the original

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Exposure In Printing And Copying (AREA)
FR7633742A 1975-11-24 1976-11-09 Dispositif pour le reglage automatique de l'exposition pour des appareils de prises de vues en continu sur microfilms Granted FR2332551A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752552589 DE2552589A1 (de) 1975-11-24 1975-11-24 Vorrichtung zur automatischen belichtungsregelung bei mikrofilm-durchlaufkameras

Publications (2)

Publication Number Publication Date
FR2332551A1 true FR2332551A1 (fr) 1977-06-17
FR2332551B1 FR2332551B1 (fr) 1983-02-04

Family

ID=5962466

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7633742A Granted FR2332551A1 (fr) 1975-11-24 1976-11-09 Dispositif pour le reglage automatique de l'exposition pour des appareils de prises de vues en continu sur microfilms

Country Status (4)

Country Link
DE (1) DE2552589A1 (fr)
FR (1) FR2332551A1 (fr)
GB (1) GB1571818A (fr)
IT (1) IT1069253B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2406837A1 (fr) * 1977-10-19 1979-05-18 Agfa Gevaert Ag Dispositif d'exposition automatique d'eclairage pour cameras de microfilmage cinematiques

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2945166A1 (de) * 1979-11-08 1981-05-14 Dr. Böger Duplomat Apparate KG (GmbH & Co), 2000 Wedel Schaltungsanordnung zur steuerung der belichtungszeit von reproduktionskameras
US4530011A (en) * 1981-06-19 1985-07-16 Loge/Dunn Instruments, Inc. Apparatus for maintaining of a cathode ray tube image within the light acceptance range of a photographic film
DE3407064A1 (de) * 1983-02-28 1984-08-30 Canon K.K., Tokio/Tokyo Bildreproduktionsgeraet
JPH0222638A (ja) * 1988-07-11 1990-01-25 Brother Ind Ltd 画像形成装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2101932A (en) * 1934-04-20 1937-12-14 Ig Farbenindustrie Ag Exposure control
US3120161A (en) * 1961-10-18 1964-02-04 De Witt H Pickens Diaphragm controlling system
US3795445A (en) * 1973-03-15 1974-03-05 Eastman Kodak Co Slope control exposure control apparatus
US3817617A (en) * 1971-12-22 1974-06-18 Agfa Gevaert Ag Photographic copying arrangement with automatic diaphragm control

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1162192B (de) * 1957-10-23 1964-01-30 Agfa Ag Fotografische Kopiervorrichtung mit einer fotoelektrischen Einrichtung zur selbsttaetigen Regelung der Belichtungszeit
DE1214524B (de) * 1965-03-22 1966-04-14 Mikrofilm G M B H Verfahren und Vorrichtung zur Ausuebung desselben zu einer automatischen Belichtungssteuerung bei Microfilm-Durchlaufkameras

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2101932A (en) * 1934-04-20 1937-12-14 Ig Farbenindustrie Ag Exposure control
US3120161A (en) * 1961-10-18 1964-02-04 De Witt H Pickens Diaphragm controlling system
US3817617A (en) * 1971-12-22 1974-06-18 Agfa Gevaert Ag Photographic copying arrangement with automatic diaphragm control
US3795445A (en) * 1973-03-15 1974-03-05 Eastman Kodak Co Slope control exposure control apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2406837A1 (fr) * 1977-10-19 1979-05-18 Agfa Gevaert Ag Dispositif d'exposition automatique d'eclairage pour cameras de microfilmage cinematiques

Also Published As

Publication number Publication date
FR2332551B1 (fr) 1983-02-04
GB1571818A (en) 1980-07-23
IT1069253B (it) 1985-03-25
DE2552589A1 (de) 1977-05-26

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Legal Events

Date Code Title Description
ST Notification of lapse