FR2421404A1 - Camera photographique et obturateur focal pour une telle camera - Google Patents

Camera photographique et obturateur focal pour une telle camera

Info

Publication number
FR2421404A1
FR2421404A1 FR7908179A FR7908179A FR2421404A1 FR 2421404 A1 FR2421404 A1 FR 2421404A1 FR 7908179 A FR7908179 A FR 7908179A FR 7908179 A FR7908179 A FR 7908179A FR 2421404 A1 FR2421404 A1 FR 2421404A1
Authority
FR
France
Prior art keywords
camera
driving
focal
gears
shutter
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.)
Withdrawn
Application number
FR7908179A
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.)
Aeronautical and General Instruments Ltd
Original Assignee
Aeronautical and General Instruments Ltd
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 Aeronautical and General Instruments Ltd filed Critical Aeronautical and General Instruments Ltd
Publication of FR2421404A1 publication Critical patent/FR2421404A1/fr
Withdrawn legal-status Critical Current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
    • G03B9/00—Exposure-making shutters; Diaphragms
    • G03B9/08—Shutters
    • G03B9/28—Roller blind or flexible plate
    • G03B9/32—Double blind
    • G03B9/34—Double blind with adjustable slot; with mechanism controlling relative movement of blinds to form slot
    • 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
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/42—Interlocking between shutter operation and advance of film or change of plate or cut-film

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Shutters For Cameras (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)

Abstract

Caméra photographique et dispositif d'obturateur de caméra photographique focal, du type effectuant une série de prises de vue à une fréquence variable et ayant dans ce but des moyens d'entraînement de films à vitesse variable. L'ouverture d'obturateur d'un rideau obturateur focal est variée en modifiant les positions relatives d'une partie externe et d'une partie interne du rideau. Des engrenages hélicoïdaux moteurs 22 et 23 de pas inversés et fixés à un arbre 24, et des engrenages hélicoïdaux d'entraînement 19 et 21 également de pas inverses sont prévus, l'engrenage 19 entraînant la partie et l'engrenage 21 entraînant la partie par des systèmes à poulies et courroies. Le déplacement axial de l'arbre 24 produit un mouvement de rotation relatif entre les engrenages et donc la variation de l'ouverture L'invention est applicable notamment aux caméras de prises de vue aérienne.
FR7908179A 1978-03-31 1979-04-02 Camera photographique et obturateur focal pour une telle camera Withdrawn FR2421404A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB12751/78A GB1578589A (en) 1978-03-31 1978-03-31 Photographic camera system

Publications (1)

Publication Number Publication Date
FR2421404A1 true FR2421404A1 (fr) 1979-10-26

Family

ID=10010453

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7908179A Withdrawn FR2421404A1 (fr) 1978-03-31 1979-04-02 Camera photographique et obturateur focal pour une telle camera

Country Status (5)

Country Link
US (1) US4235546A (fr)
CA (1) CA1112927A (fr)
DE (1) DE2912917A1 (fr)
FR (1) FR2421404A1 (fr)
GB (1) GB1578589A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2315560B (en) * 1996-07-19 2001-02-14 British Aerospace Imaging of moving objects
US6336752B1 (en) * 1999-11-19 2002-01-08 Lockheed Martin Corporation Dual motor reciprocating belt shutter
US6510282B1 (en) * 2001-10-11 2003-01-21 Recon/Optical, Inc. Long-life focal plane shutter for reconnaissance cameras

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR945136A (fr) * 1939-10-17 1949-04-26 Kodak Pathe Obturateur focal pour appareils photographiques
DE1092296B (de) * 1956-03-22 1960-11-03 Heinz Batal Vorrichtung zur Veraenderung der Schlitzweite an Rollverschluessen von fotografischen Kameras
US2970529A (en) * 1956-01-12 1961-02-07 Optische Ind De Oude Delft Nv Focal plane shutter
US3179029A (en) * 1961-09-27 1965-04-20 Vinten Ltd Camera shutter mechanisms
US3191515A (en) * 1963-08-09 1965-06-29 Memory Systems Of Missouri Inc High speed aerial camera shutter
DE2542031A1 (de) * 1975-09-20 1977-03-24 Zeiss Carl Fa Reihenbildkamera

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR945136A (fr) * 1939-10-17 1949-04-26 Kodak Pathe Obturateur focal pour appareils photographiques
US2970529A (en) * 1956-01-12 1961-02-07 Optische Ind De Oude Delft Nv Focal plane shutter
DE1092296B (de) * 1956-03-22 1960-11-03 Heinz Batal Vorrichtung zur Veraenderung der Schlitzweite an Rollverschluessen von fotografischen Kameras
US3179029A (en) * 1961-09-27 1965-04-20 Vinten Ltd Camera shutter mechanisms
CH398298A (de) * 1961-09-27 1965-08-31 Vinten Ltd Kameraverschlusseinrichtung
US3191515A (en) * 1963-08-09 1965-06-29 Memory Systems Of Missouri Inc High speed aerial camera shutter
DE2542031A1 (de) * 1975-09-20 1977-03-24 Zeiss Carl Fa Reihenbildkamera

Also Published As

Publication number Publication date
US4235546A (en) 1980-11-25
DE2912917A1 (de) 1979-10-11
GB1578589A (en) 1980-11-05
CA1112927A (fr) 1981-11-24

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Legal Events

Date Code Title Description
ST Notification of lapse