JPS6419877A - Automatic diaphragm device for video camera - Google Patents
Automatic diaphragm device for video cameraInfo
- Publication number
- JPS6419877A JPS6419877A JP62183013A JP18301387A JPS6419877A JP S6419877 A JPS6419877 A JP S6419877A JP 62183013 A JP62183013 A JP 62183013A JP 18301387 A JP18301387 A JP 18301387A JP S6419877 A JPS6419877 A JP S6419877A
- Authority
- JP
- Japan
- Prior art keywords
- automatic diaphragm
- video camera
- control signal
- diaphragm
- automatic
- 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
- Diaphragms For Cameras (AREA)
Abstract
PURPOSE:To simplify an automatic diaphragm and to ease a lens exchange by driving the lever for a diaphragm driving of a standard lens for a film camera based on an automatic diaphragm control signal outputted from a video camera. CONSTITUTION:From a video camera main body 1, an automatic diaphragm control signal SC and a power source are supplied to a control circuit 15. The automatic diaphragm control signal SC is a signal to control the automatic diaphragm of a lens according to light quantity detected in the internal part of the video camera main body 1. The automatic diaphragm control signal SC is amplified by the control circuit 15 and outputted to a motor 9 as a signal SD. The revolution of the motor 9 is transmitted through a gear 11 and a gear 8 to a lever S for the diaphragm driving of a standard lens 4 for the film camera and the suitable light quantity is obtained. When the automatic diaphragm control signal SC from the video camera main body 1 goes to be zero and the input of the motor 9 goes to be zero with accompanying it, the lever 5 for the diaphragm driving stops at the position.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62183013A JP2630780B2 (en) | 1987-04-21 | 1987-07-22 | Automatic aperture device for video cameras |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9813687 | 1987-04-21 | ||
JP62-98136 | 1987-04-21 | ||
JP62183013A JP2630780B2 (en) | 1987-04-21 | 1987-07-22 | Automatic aperture device for video cameras |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6419877A true JPS6419877A (en) | 1989-01-23 |
JP2630780B2 JP2630780B2 (en) | 1997-07-16 |
Family
ID=26439340
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62183013A Expired - Fee Related JP2630780B2 (en) | 1987-04-21 | 1987-07-22 | Automatic aperture device for video cameras |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2630780B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0482640A2 (en) * | 1990-10-25 | 1992-04-29 | Canon Kabushiki Kaisha | Adapter device for interchangeable lens of camera |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5960430A (en) * | 1982-09-30 | 1984-04-06 | Asahi Optical Co Ltd | Lens mount converter of video camera |
JPS5990907U (en) * | 1982-12-09 | 1984-06-20 | キヤノン株式会社 | mount conversion adapter |
-
1987
- 1987-07-22 JP JP62183013A patent/JP2630780B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5960430A (en) * | 1982-09-30 | 1984-04-06 | Asahi Optical Co Ltd | Lens mount converter of video camera |
JPS5990907U (en) * | 1982-12-09 | 1984-06-20 | キヤノン株式会社 | mount conversion adapter |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0482640A2 (en) * | 1990-10-25 | 1992-04-29 | Canon Kabushiki Kaisha | Adapter device for interchangeable lens of camera |
Also Published As
Publication number | Publication date |
---|---|
JP2630780B2 (en) | 1997-07-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
LAPS | Cancellation because of no payment of annual fees |