FR2356175A1 - Dispositif de commande d'exposition au flash - Google Patents

Dispositif de commande d'exposition au flash

Info

Publication number
FR2356175A1
FR2356175A1 FR7719406A FR7719406A FR2356175A1 FR 2356175 A1 FR2356175 A1 FR 2356175A1 FR 7719406 A FR7719406 A FR 7719406A FR 7719406 A FR7719406 A FR 7719406A FR 2356175 A1 FR2356175 A1 FR 2356175A1
Authority
FR
France
Prior art keywords
flash
control device
exposure control
flash exposure
response
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
FR7719406A
Other languages
English (en)
Other versions
FR2356175B1 (fr
Inventor
Toshio Kobori
Masayoshi Sahara
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.)
Minolta Co Ltd
Original Assignee
Minolta Co 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
Priority claimed from JP7578376A external-priority patent/JPS5941566B2/ja
Priority claimed from JP12699076A external-priority patent/JPS5351740A/ja
Application filed by Minolta Co Ltd filed Critical Minolta Co Ltd
Publication of FR2356175A1 publication Critical patent/FR2356175A1/fr
Application granted granted Critical
Publication of FR2356175B1 publication Critical patent/FR2356175B1/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
    • G03B7/16—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
    • 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
    • G03B9/70—Exposure-making shutters; Diaphragms with flash-synchronising contacts

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Stroboscope Apparatuses (AREA)

Abstract

La présente invention concerne un dispositif de commande d'exposition au flash. Ce dispositif, quand il est utilisé avec un flash électronique connecté aux bornes T0 et T1 , peut fonctionner automatiquement en lumière diurne ou au flash en réponse au fait que la charge stockée dans le condensateur pouvant se décharger dans la lampe flash a atteint un niveau de tension prédéterminée L'obturateur est fermé par un électro-aimant M en réponse au déclenchement du dispositif flash Application aux appareils photographiques à obturateur focal du type à double rideau.
FR7719406A 1976-06-25 1977-06-24 Dispositif de commande d'exposition au flash Granted FR2356175A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP7578376A JPS5941566B2 (ja) 1976-06-25 1976-06-25 閃光撮影のためのシヤツタ制御装置
JP12699076A JPS5351740A (en) 1976-10-21 1976-10-21 Shutter control circuit for flash photography

Publications (2)

Publication Number Publication Date
FR2356175A1 true FR2356175A1 (fr) 1978-01-20
FR2356175B1 FR2356175B1 (fr) 1982-12-17

Family

ID=26416934

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7719406A Granted FR2356175A1 (fr) 1976-06-25 1977-06-24 Dispositif de commande d'exposition au flash

Country Status (3)

Country Link
US (1) US4311371A (fr)
DE (1) DE2728527A1 (fr)
FR (1) FR2356175A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS559554A (en) * 1978-07-05 1980-01-23 Olympus Optical Co Ltd Electric shutter camera
US4367023A (en) * 1980-04-25 1983-01-04 Minolta Camera Kabushiki Kaisha Camera flash light control circuitry
CN1088201C (zh) * 1994-05-18 2002-07-24 富士摄影胶片公司 装有镜头的照相胶卷单元和用于该单元的电子闪光装置
US8224176B1 (en) * 2011-01-10 2012-07-17 Eastman Kodak Company Combined ambient and flash exposure for improved image quality
US8754953B2 (en) 2011-06-24 2014-06-17 Apple Inc. Digital camera providing an extended focus range
US8760527B2 (en) 2011-06-24 2014-06-24 Apple Inc. Extending a digital camera focus range

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3757654A (en) * 1971-04-19 1973-09-11 Asahi Optical Co Ltd Camera having automatic exposure and automatic flash controls
DE2514535A1 (de) * 1974-04-03 1975-10-30 Canon Kk Belichtungssteuereinrichtung fuer eine photographische kamera
FR2277356A1 (fr) * 1974-07-02 1976-01-30 Olympus Optical Co Appareil de synchronisation d'un flash electronique avec une camera de prise de vue photographique

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2058680B2 (de) * 1969-12-01 1974-10-03 Canon K.K., Tokio Blendenverschluß
US3720144A (en) * 1969-12-10 1973-03-13 Canon Kk Flash apparatus for a camera
US3690237A (en) * 1970-09-22 1972-09-12 Zydichi Fuwa Electronic flashlight device for flashlight photography
JPS5333066B2 (fr) * 1974-06-13 1978-09-12

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3757654A (en) * 1971-04-19 1973-09-11 Asahi Optical Co Ltd Camera having automatic exposure and automatic flash controls
DE2514535A1 (de) * 1974-04-03 1975-10-30 Canon Kk Belichtungssteuereinrichtung fuer eine photographische kamera
FR2277356A1 (fr) * 1974-07-02 1976-01-30 Olympus Optical Co Appareil de synchronisation d'un flash electronique avec une camera de prise de vue photographique

Also Published As

Publication number Publication date
FR2356175B1 (fr) 1982-12-17
DE2728527C2 (fr) 1987-10-29
US4311371A (en) 1982-01-19
DE2728527A1 (de) 1978-01-05

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Legal Events

Date Code Title Description
ST Notification of lapse