JPS5699331A - Exposure control device of camera provided with self timer - Google Patents
Exposure control device of camera provided with self timerInfo
- Publication number
- JPS5699331A JPS5699331A JP189080A JP189080A JPS5699331A JP S5699331 A JPS5699331 A JP S5699331A JP 189080 A JP189080 A JP 189080A JP 189080 A JP189080 A JP 189080A JP S5699331 A JPS5699331 A JP S5699331A
- Authority
- JP
- Japan
- Prior art keywords
- time
- circuit
- capacitor
- exposure
- self timer
- 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
- 239000003990 capacitor Substances 0.000 abstract 6
- 230000006978 adaptation Effects 0.000 abstract 1
- 230000010354 integration Effects 0.000 abstract 1
Landscapes
- Exposure Control For Cameras (AREA)
- Shutter-Related Mechanisms (AREA)
Abstract
PURPOSE: To decrease external mounted parts in the case of circuit integration and make adaptation to a small size camera easy by using one time constant capacitor commonly for a self timer circuit and an exposure time controlling circuit.
CONSTITUTION: A capacitor C is connected to a self timer circuit V by a change- over switch Sw, and operates as a time constant capacitor for controllig self timer time. When a prescribed time elapses after the circuit V starts operating, the output thereof changes, and the electromagnet Mg is de-energized for a constant time by the operation of an electromagnet controlling circuit D of the later stage, and the operation of an exposure controlling circuit E is started; at the same time, SW is changed over, by which the capacitor C is connected to the circuit E. Hence, at this instant, the capacitor C operates as a time constant capacitor for exposure time controlling. After the lapse of the time corresponding to exposure, Mg goes OFF and exposure ends; at the same time, Sw resets.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP189080A JPS5699331A (en) | 1980-01-11 | 1980-01-11 | Exposure control device of camera provided with self timer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP189080A JPS5699331A (en) | 1980-01-11 | 1980-01-11 | Exposure control device of camera provided with self timer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5699331A true JPS5699331A (en) | 1981-08-10 |
Family
ID=11514167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP189080A Pending JPS5699331A (en) | 1980-01-11 | 1980-01-11 | Exposure control device of camera provided with self timer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5699331A (en) |
-
1980
- 1980-01-11 JP JP189080A patent/JPS5699331A/en active Pending
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