JPS5734546A - Electromagnetic releasing device in single lens reflex camera - Google Patents

Electromagnetic releasing device in single lens reflex camera

Info

Publication number
JPS5734546A
JPS5734546A JP11005180A JP11005180A JPS5734546A JP S5734546 A JPS5734546 A JP S5734546A JP 11005180 A JP11005180 A JP 11005180A JP 11005180 A JP11005180 A JP 11005180A JP S5734546 A JPS5734546 A JP S5734546A
Authority
JP
Japan
Prior art keywords
release
lever
shutter
electromagnetic
amarture
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
JP11005180A
Other languages
Japanese (ja)
Other versions
JPS6251457B2 (en
Inventor
Ichiro Morimoto
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.)
Olympus Corp
Original Assignee
Olympus Optical 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
Application filed by Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP11005180A priority Critical patent/JPS5734546A/en
Publication of JPS5734546A publication Critical patent/JPS5734546A/en
Publication of JPS6251457B2 publication Critical patent/JPS6251457B2/ja
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
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/38—Releasing-devices separate from shutter

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Details Of Cameras Including Film Mechanisms (AREA)
  • Cameras In General (AREA)
  • Diaphragms For Cameras (AREA)
  • Shutters For Cameras (AREA)
  • Shutter-Related Mechanisms (AREA)

Abstract

PURPOSE:To perform photographing always in a stable diaphragm aperture state by delaying shutter releasing for a fixed time until the bounding phenomenon of diaphragm blades calms down by the use of a release type electromagnet. CONSTITUTION:An electromagnetic release device 40 consists of a release lever 25, a shutter release lever 27 and permanent magnets 46a, 46b incorporated in a release type electromagnetic 41, and a switching circuit 63 and a delay circuit 64 are connected to a winding 42. With this constitution, an amarture 45 is turned counterclockwise with the lower part as a fulcrum by the operation of a release button, and after prescribed stopping-down and kicking-up of a reflecting mirror are accomplished by the depression of the lever 25, it is reset. Thence, if the electric current reverse from the initial one is flowed by a switching circuit after the bounding phenomenon of diaphragm blades calms down with a fixed time delay by a delay circuit 62, the amarture 45 this time turns clockwise with the upper part as a fulcrum, thereby forcing up the lever 27 and operating the shutter. Thereby, photographing is carried out always in the stable diaphragm state.
JP11005180A 1980-08-11 1980-08-11 Electromagnetic releasing device in single lens reflex camera Granted JPS5734546A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11005180A JPS5734546A (en) 1980-08-11 1980-08-11 Electromagnetic releasing device in single lens reflex camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11005180A JPS5734546A (en) 1980-08-11 1980-08-11 Electromagnetic releasing device in single lens reflex camera

Publications (2)

Publication Number Publication Date
JPS5734546A true JPS5734546A (en) 1982-02-24
JPS6251457B2 JPS6251457B2 (en) 1987-10-30

Family

ID=14525848

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11005180A Granted JPS5734546A (en) 1980-08-11 1980-08-11 Electromagnetic releasing device in single lens reflex camera

Country Status (1)

Country Link
JP (1) JPS5734546A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5918938A (en) * 1982-07-23 1984-01-31 Copal Co Ltd Electromagnetic release device of singe-lens reflex camera
JPS62115429A (en) * 1985-11-15 1987-05-27 Nippon Kogaku Kk <Nikon> Manual stopping-down mechanism for camera
JP2012133005A (en) * 2010-12-20 2012-07-12 Canon Inc Shutter device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5918938A (en) * 1982-07-23 1984-01-31 Copal Co Ltd Electromagnetic release device of singe-lens reflex camera
JPH0466010B2 (en) * 1982-07-23 1992-10-21 Copal Co Ltd
JPS62115429A (en) * 1985-11-15 1987-05-27 Nippon Kogaku Kk <Nikon> Manual stopping-down mechanism for camera
JP2012133005A (en) * 2010-12-20 2012-07-12 Canon Inc Shutter device

Also Published As

Publication number Publication date
JPS6251457B2 (en) 1987-10-30

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