JPS55156922A - Safety device of camera - Google Patents
Safety device of cameraInfo
- Publication number
- JPS55156922A JPS55156922A JP6499279A JP6499279A JPS55156922A JP S55156922 A JPS55156922 A JP S55156922A JP 6499279 A JP6499279 A JP 6499279A JP 6499279 A JP6499279 A JP 6499279A JP S55156922 A JPS55156922 A JP S55156922A
- Authority
- JP
- Japan
- Prior art keywords
- aperture
- pulse
- specified
- failure
- stopping
- 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.)
- Pending
Links
Landscapes
- Diaphragms For Cameras (AREA)
- Exposure Control For Cameras (AREA)
Abstract
PURPOSE: To simplify automatic aperture mechanism and prevent the failure taking owing to the failure in the determination of aperture by providing an initial run section to an aperture driving member and stopping the progression of the taking operation when the specified signal fails to generate in this section.
CONSTITUTION: A pulse generator consisting of a slit plate 13 rotating together with the rotation of an automatic aperture determining ring 9, a stationary slit plate 14, a projector 15 and a photoelectric transducer 16 is provided. This is so controlled that when the automatic aperture operation is started upon disengagement of the stopping claw 10b of the stopper 10 of the ring 9, the pulse from the foregoing pulse generator is generated but when the pulse signal fails to generate during the rotation of the first specified angle, the taking operation does not progress. When the pulse signal reaches the specified aperture value pulse, the electromagnet 17 of a stopping device 17 is energized to actuate a stopping claw 17c and stop the ring 9, whereby the specified aperture diameter is determined. Thereby, the mechanism is simplified and the accident of the failure in the determination of the aperture may be prevented.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6499279A JPS55156922A (en) | 1979-05-28 | 1979-05-28 | Safety device of camera |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6499279A JPS55156922A (en) | 1979-05-28 | 1979-05-28 | Safety device of camera |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55156922A true JPS55156922A (en) | 1980-12-06 |
Family
ID=13274056
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6499279A Pending JPS55156922A (en) | 1979-05-28 | 1979-05-28 | Safety device of camera |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55156922A (en) |
-
1979
- 1979-05-28 JP JP6499279A patent/JPS55156922A/en active Pending
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