JPS5512946A - Automatic exposure control diaphragm device - Google Patents
Automatic exposure control diaphragm deviceInfo
- Publication number
- JPS5512946A JPS5512946A JP8590178A JP8590178A JPS5512946A JP S5512946 A JPS5512946 A JP S5512946A JP 8590178 A JP8590178 A JP 8590178A JP 8590178 A JP8590178 A JP 8590178A JP S5512946 A JPS5512946 A JP S5512946A
- Authority
- JP
- Japan
- Prior art keywords
- coils
- magnets
- automatic exposure
- exposure control
- linkage
- 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)
- Diaphragms For Cameras (AREA)
Abstract
PURPOSE: To reduce the cost of a camera by displacing a quadrilateral linkage by electromagnetic responsive operation in a housing having an opening as an optical path at the center thereof to thereby conduct an automatic exposure control aperture operation with a simple construction.
CONSTITUTION: A pair of movable links 3 having coils 5, 5', respectively engaging alternatively with different polarities of magnets symmetrically within a housing having an opening as an optical path at the center thereof are connected to a pair of circular links 4, 4 mounted with the coils 5, 5' to thereby form a quadrilateral linkage. A relay member for transmitting the movement of the linkage mechanism to diaphragm blades 16 is also provided. The linkage mechanism is moved by the magnets and the electromagnetic induction produced by energizing the coils 5, 5' in the air gap magnetic field formed at the coils 5, 5' opposite to the magnets to thereby control the aperture as desired by the diaphragm blades 16.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8590178A JPS5952808B2 (en) | 1978-07-13 | 1978-07-13 | automatic exposure control aperture device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8590178A JPS5952808B2 (en) | 1978-07-13 | 1978-07-13 | automatic exposure control aperture device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5512946A true JPS5512946A (en) | 1980-01-29 |
JPS5952808B2 JPS5952808B2 (en) | 1984-12-21 |
Family
ID=13871754
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8590178A Expired JPS5952808B2 (en) | 1978-07-13 | 1978-07-13 | automatic exposure control aperture device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5952808B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60120433U (en) * | 1984-01-25 | 1985-08-14 | 株式会社日立製作所 | Automatic aperture mechanism |
JPS60216339A (en) * | 1984-11-30 | 1985-10-29 | Nippon Seimitsu Kogyo Kk | Stop device |
JPS62212636A (en) * | 1986-03-14 | 1987-09-18 | Stanley Electric Co Ltd | Stop controller |
WO1996002018A1 (en) * | 1994-07-09 | 1996-01-25 | Martin Heinze | Electromagnetically actuatable central shutter for photographic camera |
-
1978
- 1978-07-13 JP JP8590178A patent/JPS5952808B2/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60120433U (en) * | 1984-01-25 | 1985-08-14 | 株式会社日立製作所 | Automatic aperture mechanism |
JPS60216339A (en) * | 1984-11-30 | 1985-10-29 | Nippon Seimitsu Kogyo Kk | Stop device |
JPS6321173B2 (en) * | 1984-11-30 | 1988-05-06 | Nippon Seimitsu Kogyo | |
JPS62212636A (en) * | 1986-03-14 | 1987-09-18 | Stanley Electric Co Ltd | Stop controller |
JPH0554091B2 (en) * | 1986-03-14 | 1993-08-11 | Stanley Electric Co Ltd | |
WO1996002018A1 (en) * | 1994-07-09 | 1996-01-25 | Martin Heinze | Electromagnetically actuatable central shutter for photographic camera |
Also Published As
Publication number | Publication date |
---|---|
JPS5952808B2 (en) | 1984-12-21 |
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