JPS5225629A - Exposure control means - Google Patents
Exposure control meansInfo
- Publication number
- JPS5225629A JPS5225629A JP50101412A JP10141275A JPS5225629A JP S5225629 A JPS5225629 A JP S5225629A JP 50101412 A JP50101412 A JP 50101412A JP 10141275 A JP10141275 A JP 10141275A JP S5225629 A JPS5225629 A JP S5225629A
- Authority
- JP
- Japan
- Prior art keywords
- control means
- exposure control
- shutter
- polarity
- brightness
- 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)
- Shutters For Cameras (AREA)
Abstract
PURPOSE: To enable a shutter actuation with no delay time with a little electric power by actuating a shutter blade with an electromagnetic magnet which changes its polarity for a period of time corresponding to the brightness of an object.
COPYRIGHT: (C)1977,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50101412A JPS5225629A (en) | 1975-08-20 | 1975-08-20 | Exposure control means |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50101412A JPS5225629A (en) | 1975-08-20 | 1975-08-20 | Exposure control means |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5225629A true JPS5225629A (en) | 1977-02-25 |
Family
ID=14299984
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50101412A Pending JPS5225629A (en) | 1975-08-20 | 1975-08-20 | Exposure control means |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5225629A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62195630A (en) * | 1986-02-24 | 1987-08-28 | Canon Inc | Electromagnetic shutter |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5081137A (en) * | 1973-11-16 | 1975-07-01 |
-
1975
- 1975-08-20 JP JP50101412A patent/JPS5225629A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5081137A (en) * | 1973-11-16 | 1975-07-01 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62195630A (en) * | 1986-02-24 | 1987-08-28 | Canon Inc | Electromagnetic shutter |
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