FR2410294A1 - Systeme de commande d'exposition destine a etre utilise dans un appareil de prise de vues photographiques - Google Patents

Systeme de commande d'exposition destine a etre utilise dans un appareil de prise de vues photographiques

Info

Publication number
FR2410294A1
FR2410294A1 FR7833226A FR7833226A FR2410294A1 FR 2410294 A1 FR2410294 A1 FR 2410294A1 FR 7833226 A FR7833226 A FR 7833226A FR 7833226 A FR7833226 A FR 7833226A FR 2410294 A1 FR2410294 A1 FR 2410294A1
Authority
FR
France
Prior art keywords
control system
photodetector
exposure
exposure control
photographic camera
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
FR7833226A
Other languages
English (en)
Other versions
FR2410294B1 (fr
Inventor
Bruce K Johnson
John P Burgarella
Peter P Garcia
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.)
Polaroid Corp
Original Assignee
Polaroid Corp
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
Priority claimed from US05/860,639 external-priority patent/US4174893A/en
Application filed by Polaroid Corp filed Critical Polaroid Corp
Publication of FR2410294A1 publication Critical patent/FR2410294A1/fr
Application granted granted Critical
Publication of FR2410294B1 publication Critical patent/FR2410294B1/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
    • G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
    • G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
    • G03B7/081—Analogue circuits
    • G03B7/087—Analogue circuits for control of both exposure time and aperture
    • 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
    • G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
    • G03B7/16—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly in accordance with both the intensity of the flash source and the distance of the flash source from the object, e.g. in accordance with the "guide number" of the flash bulb and the focusing of the camera

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Control For Cameras (AREA)
  • Indication In Cameras, And Counting Of Exposures (AREA)
  • Diaphragms For Cameras (AREA)
  • Studio Devices (AREA)

Abstract

APPAREIL DE PRISE DE VUES PHOTOGRAPHIQUES. IL COMPREND UN SYSTEME DE COMMANDE D'EXPOSITION COMPORTANT UN UNIQUE PHOTODETECTEUR ET UNE PAIRE DE LAMES A OUVERTURES MULTIPLES, SE DEPLACANT EN VA-ET-VIENT EN SENS INVERSE, COOPERANT DANS UN MODE DE FONCTIONNEMENT EN PRE-EXPOSITION POUR FOURNIR UN SIGNAL DE SORTIE DU PHOTODETECTEUR QUI EST UTILISE POUR MESURER ET INDIQUER LA PRESENCE D'UNE CONDITION DE FAIBLE LUMINOSITE DE LA SCENE NECESSITANT L'UTILISATION D'UNE SOURCE DE LUMIERE ARTIFICIELLE POUR ECLAIRER LA SCENE, ET COOPERANT ENSUITE, PENDANT UN MODE DE FONCTIONNEMENT EN EXPOSITION, DE MANIERE QUE LA SORTIE DU PHOTODETECTEUR SOIT UTILISEE POUR COMMANDER LA VALEUR D'EXPOSITION COMMUNIQUEE AU FILM PLACE A L'INTERIEUR DE L'APPAREIL DE PRISE DE VUES.
FR7833226A 1977-11-25 1978-11-24 Systeme de commande d'exposition destine a etre utilise dans un appareil de prise de vues photographiques Granted FR2410294A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US85469177A 1977-11-25 1977-11-25
US05/860,639 US4174893A (en) 1977-12-14 1977-12-14 Exposure control system for use in photographic camera apparatus

Publications (2)

Publication Number Publication Date
FR2410294A1 true FR2410294A1 (fr) 1979-06-22
FR2410294B1 FR2410294B1 (fr) 1985-02-22

Family

ID=27127248

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7833226A Granted FR2410294A1 (fr) 1977-11-25 1978-11-24 Systeme de commande d'exposition destine a etre utilise dans un appareil de prise de vues photographiques

Country Status (5)

Country Link
JP (1) JPS5483425A (fr)
DE (1) DE2850999A1 (fr)
FR (1) FR2410294A1 (fr)
GB (1) GB2008783B (fr)
IE (1) IE47583B1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2954240C2 (de) * 1978-04-21 1985-08-14 Copal Co. Ltd., Tokio/Tokyo Belichtungssteuereinrichtung für Kameras mit einem programmierbaren elektrischen Verschluß
JPS58154824A (ja) * 1983-02-18 1983-09-14 Canon Inc 露光量制御装置
JPS59162514A (ja) * 1983-03-08 1984-09-13 Dainippon Screen Mfg Co Ltd 画像走査記録装置における焦点調整方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3942183A (en) * 1974-07-02 1976-03-02 Polaroid Corporation Camera with pivoting blades
US4040072A (en) * 1976-01-13 1977-08-02 Polaroid Corporation Shutter latch arrangement releasable through shutter blade actuation and resettable through film advancement
US4047190A (en) * 1975-10-10 1977-09-06 Polaroid Corporation Hybrid exposure control system employing dual maximum blade displacement

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3942183A (en) * 1974-07-02 1976-03-02 Polaroid Corporation Camera with pivoting blades
US4047190A (en) * 1975-10-10 1977-09-06 Polaroid Corporation Hybrid exposure control system employing dual maximum blade displacement
US4040072A (en) * 1976-01-13 1977-08-02 Polaroid Corporation Shutter latch arrangement releasable through shutter blade actuation and resettable through film advancement

Also Published As

Publication number Publication date
DE2850999A1 (de) 1979-05-31
GB2008783B (en) 1982-07-21
FR2410294B1 (fr) 1985-02-22
GB2008783A (en) 1979-06-06
IE47583B1 (en) 1984-05-02
IE782256L (en) 1979-05-25
JPS5483425A (en) 1979-07-03

Similar Documents

Publication Publication Date Title
FR2441865A1 (fr) Appareil de prise de vues a flash de complement proportionnel et procede d'exposition d'un film photographique mettant cet appareil en oeuvre
CN104580924A (zh) 一种闪光灯功率的调整方法及终端
JPS5445128A (en) Exposure control system for camera
JPS5525024A (en) Exposure control unit of single-lens reflex camera
FR2410294A1 (fr) Systeme de commande d'exposition destine a etre utilise dans un appareil de prise de vues photographiques
FR2451048A1 (fr) Appareil de prise de vues a mise au point et amorcage de flash automatiques
JPS5540422A (en) Exposure information generating circuit of single-lens reflex camera
JPS57122421A (en) Photometric device of single-lens reflex camera
FR2476426A1 (fr) Installation de radiodiagnostic comprenant des moyens destines a prendre en compte l'evanouissement d'image apres l'apparition d'un signal de debranchement
JPS5748719A (en) Exposure controller for flash photography
JPS5433037A (en) Electro photographic device
JPS556324A (en) Photographing method
SE8703554L (sv) Anordning foer bestaemning av kamerainstaellning
SU1295361A1 (ru) Способ получени тестовых изображений
FR2424563A1 (fr) Procede pour realiser, par reflexion, des tirages d'images individuelles
JPS569730A (en) Method and device for photometry for flash photography
FR2404869A1 (fr) Procede pour commander la fermeture d'un diaphragme dans un appareil photographique, et dispositif pour la mise en oeuvre de ce procede
JPS5458435A (en) Photographic apparatus
JPS552260A (en) Automatic digital exposure control unit of both shutter and aperture control
GB1479705A (en) Photographic cameras
GB2132369A (en) Apparatus for flash photography
JPS54100724A (en) Program shutter circuit for camera having interchangeable lenses
JPS5346725A (en) Exposure controller of cameras
JPS5412730A (en) Automatic exposure controller of cameras
JPS55164820A (en) Alarm device of camera using materially electro* magneto optical diaphragm device

Legal Events

Date Code Title Description
ST Notification of lapse