JPS5336228A - Lens stop device - Google Patents
Lens stop deviceInfo
- Publication number
- JPS5336228A JPS5336228A JP11109376A JP11109376A JPS5336228A JP S5336228 A JPS5336228 A JP S5336228A JP 11109376 A JP11109376 A JP 11109376A JP 11109376 A JP11109376 A JP 11109376A JP S5336228 A JPS5336228 A JP S5336228A
- Authority
- JP
- Japan
- Prior art keywords
- stop device
- rotor
- lens stop
- magnetization
- revolving
- 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)
Abstract
PURPOSE:Friction by magnetization is prevented and the entire unit smaller in size and light movement is accomplished by revolving a rotor within permanent magnets by applying the current corresponding to the f/stops to directly operate diaphragm blades and forming the bearing balls of the rotor with a non-magnetic material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11109376A JPS5336228A (en) | 1976-09-16 | 1976-09-16 | Lens stop device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11109376A JPS5336228A (en) | 1976-09-16 | 1976-09-16 | Lens stop device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5336228A true JPS5336228A (en) | 1978-04-04 |
Family
ID=14552193
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11109376A Pending JPS5336228A (en) | 1976-09-16 | 1976-09-16 | Lens stop device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5336228A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005274593A (en) * | 2004-03-22 | 2005-10-06 | Nidec Copal Corp | Device for regulating light intensity |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4950927A (en) * | 1972-09-14 | 1974-05-17 | ||
JPS4969132A (en) * | 1972-11-01 | 1974-07-04 | ||
JPS4969131A (en) * | 1972-11-01 | 1974-07-04 |
-
1976
- 1976-09-16 JP JP11109376A patent/JPS5336228A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4950927A (en) * | 1972-09-14 | 1974-05-17 | ||
JPS4969132A (en) * | 1972-11-01 | 1974-07-04 | ||
JPS4969131A (en) * | 1972-11-01 | 1974-07-04 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005274593A (en) * | 2004-03-22 | 2005-10-06 | Nidec Copal Corp | Device for regulating light intensity |
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