JPS5517134A - Automatic controller of iris in digital electric shutter - Google Patents
Automatic controller of iris in digital electric shutterInfo
- Publication number
- JPS5517134A JPS5517134A JP8936378A JP8936378A JPS5517134A JP S5517134 A JPS5517134 A JP S5517134A JP 8936378 A JP8936378 A JP 8936378A JP 8936378 A JP8936378 A JP 8936378A JP S5517134 A JPS5517134 A JP S5517134A
- Authority
- JP
- Japan
- Prior art keywords
- iris
- specified
- light
- signal
- driving
- 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
- Exposure Control For Cameras (AREA)
Abstract
PURPOSE: To enable iris to be automatically set so that correct shutter time may be obtained according to the intensities of photographing light by generating a pulse at each specified control quantity of iris and resetting the light response pulse counter of the digital electric shutter by said pulse.
CONSTITUTION: According to the specified different storage values of a light response pulse counter 3, the braking signal and driving signal or driving stop signal which limit the operations of an aperture controller to the specified states are respectively outputted and the aperture controller is controlled by the braking signal to limit its control direction in the specified one direction or the operation of the controller is restrained and its driving action is rapidly stopped by the driving stop signal to readily and automatically control the iris according to whether the photographing light is high luminance inadequateness or low luminance inadequateness, so that when the photographing light becomes correct light the automatic control operation of the iris is rapidly stopped.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8936378A JPS5517134A (en) | 1978-07-24 | 1978-07-24 | Automatic controller of iris in digital electric shutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8936378A JPS5517134A (en) | 1978-07-24 | 1978-07-24 | Automatic controller of iris in digital electric shutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5517134A true JPS5517134A (en) | 1980-02-06 |
Family
ID=13968613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8936378A Pending JPS5517134A (en) | 1978-07-24 | 1978-07-24 | Automatic controller of iris in digital electric shutter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5517134A (en) |
-
1978
- 1978-07-24 JP JP8936378A patent/JPS5517134A/en active Pending
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