JPS5386208A - Photograph aperture control method - Google Patents
Photograph aperture control methodInfo
- Publication number
- JPS5386208A JPS5386208A JP15713776A JP15713776A JPS5386208A JP S5386208 A JPS5386208 A JP S5386208A JP 15713776 A JP15713776 A JP 15713776A JP 15713776 A JP15713776 A JP 15713776A JP S5386208 A JPS5386208 A JP S5386208A
- Authority
- JP
- Japan
- Prior art keywords
- control method
- aperture control
- photograph
- photograph aperture
- iris
- 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
Landscapes
- Exposure Control For Cameras (AREA)
- Control Of Position Or Direction (AREA)
Abstract
PURPOSE: To simplify an iris control structure and control it at high precision, wherein a motor is used, which can quickly be stopped by giving an electric energy and provides a pulse signal, which is counted to detect the position of the iris.
COPYRIGHT: (C)1978,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15713776A JPS5386208A (en) | 1976-12-24 | 1976-12-24 | Photograph aperture control method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15713776A JPS5386208A (en) | 1976-12-24 | 1976-12-24 | Photograph aperture control method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5386208A true JPS5386208A (en) | 1978-07-29 |
JPS6260686B2 JPS6260686B2 (en) | 1987-12-17 |
Family
ID=15642999
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15713776A Granted JPS5386208A (en) | 1976-12-24 | 1976-12-24 | Photograph aperture control method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5386208A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63155039A (en) * | 1986-12-18 | 1988-06-28 | Canon Inc | Diaphragm controller using step-motor |
US5177452A (en) * | 1989-12-25 | 1993-01-05 | Nec Corporation | Stabilized circuit of high output power transistor for microwave and milliwave |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4830928A (en) * | 1971-08-26 | 1973-04-23 | ||
JPS49135628A (en) * | 1973-04-26 | 1974-12-27 | ||
JPS5075031A (en) * | 1973-11-01 | 1975-06-20 | ||
JPS50116027A (en) * | 1974-02-25 | 1975-09-11 |
-
1976
- 1976-12-24 JP JP15713776A patent/JPS5386208A/en active Granted
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4830928A (en) * | 1971-08-26 | 1973-04-23 | ||
JPS49135628A (en) * | 1973-04-26 | 1974-12-27 | ||
JPS5075031A (en) * | 1973-11-01 | 1975-06-20 | ||
JPS50116027A (en) * | 1974-02-25 | 1975-09-11 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63155039A (en) * | 1986-12-18 | 1988-06-28 | Canon Inc | Diaphragm controller using step-motor |
US5177452A (en) * | 1989-12-25 | 1993-01-05 | Nec Corporation | Stabilized circuit of high output power transistor for microwave and milliwave |
Also Published As
Publication number | Publication date |
---|---|
JPS6260686B2 (en) | 1987-12-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5293323A (en) | Electromagnetic shutter | |
JPS5321722A (en) | Method and apparatus for directly controlling motor | |
JPS5386208A (en) | Photograph aperture control method | |
JPS5411771A (en) | Electronic watch | |
JPS5256532A (en) | Iris information setting device for camera | |
JPS5568895A (en) | Servomotor positioning apparatus | |
JPS51128527A (en) | Automatic exposure control camera | |
JPS5357737A (en) | Magnetic control circuit | |
JPS544060A (en) | Klystron of multi-cavity type | |
JPS5211340A (en) | Ignition time control device | |
JPS5376058A (en) | Direction controller | |
JPS52130338A (en) | Focusing point detectig means | |
JPS5268941A (en) | Anti time-limiting apparatus | |
JPS5335354A (en) | Trigger pulse generator circuit | |
JPS5325851A (en) | Energy sensing meh tod of inductive thunder | |
JPS52106024A (en) | Remote engine controller | |
JPS51124426A (en) | Automatic exposure control device provided with the strobo lightemissi on control device | |
JPS5349935A (en) | Pulse duration decision circuit | |
JPS5387683A (en) | Assembling method of electrostrictive element | |
JPS5246416A (en) | Motor driving circuit | |
JPS51150016A (en) | Control device of induction motor | |
JPS547519A (en) | Motor speed control circuit | |
JPS51138807A (en) | Direct current motor | |
JPS5243246A (en) | Controlling device for elevator | |
JPS51124938A (en) | Automatic focusing apparatus |