JPS6419877A - Automatic diaphragm device for video camera - Google Patents

Automatic diaphragm device for video camera

Info

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
Application number
JP62183013A
Other languages
Japanese (ja)
Other versions
JP2630780B2 (en
Inventor
Kazuyuki Kido
Eiji Horino
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GROUP N KK
Original Assignee
GROUP N KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by GROUP N KK filed Critical GROUP N KK
Priority to JP62183013A priority Critical patent/JP2630780B2/en
Publication of JPS6419877A publication Critical patent/JPS6419877A/en
Application granted granted Critical
Publication of JP2630780B2 publication Critical patent/JP2630780B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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.
JP62183013A 1987-04-21 1987-07-22 Automatic aperture device for video cameras Expired - Fee Related JP2630780B2 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

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R250 Receipt of annual fees

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LAPS Cancellation because of no payment of annual fees