JPS5734546A - Electromagnetic releasing device in single lens reflex camera - Google Patents
Electromagnetic releasing device in single lens reflex cameraInfo
- 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
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)
- Shutters For Cameras (AREA)
- Shutter-Related Mechanisms (AREA)
- Details Of Cameras Including Film Mechanisms (AREA)
- Cameras In General (AREA)
- Diaphragms For Cameras (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.
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)
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 |
-
1980
- 1980-08-11 JP JP11005180A patent/JPS5734546A/en active Granted
Cited By (4)
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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