JPS5576309A - Automatic focusing device - Google Patents

Automatic focusing device

Info

Publication number
JPS5576309A
JPS5576309A JP14929178A JP14929178A JPS5576309A JP S5576309 A JPS5576309 A JP S5576309A JP 14929178 A JP14929178 A JP 14929178A JP 14929178 A JP14929178 A JP 14929178A JP S5576309 A JPS5576309 A JP S5576309A
Authority
JP
Japan
Prior art keywords
focal length
amplitude
zoom lens
lens device
optical path
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
JP14929178A
Other languages
Japanese (ja)
Other versions
JPS6214806B2 (en
Inventor
Yoshimi Watanabe
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP14929178A priority Critical patent/JPS5576309A/en
Publication of JPS5576309A publication Critical patent/JPS5576309A/en
Publication of JPS6214806B2 publication Critical patent/JPS6214806B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Focusing (AREA)
  • Lens Barrels (AREA)
  • Automatic Focus Adjustment (AREA)

Abstract

PURPOSE: To make possible always accurate focus controling by making the amplitude of sine wave voltage variable according to the focal length of a zoom lens device.
CONSTITUTION: An image pickup tube 5 is provided for the focusing lens 2 of a zoom lens device 1, in the position approximately equal to the wavelength between this and imaging plane. In addition, a vibrating means 12 which vibrates and varies the optical path length between the lens 2 and image pickup tube 5 at the specified frequency and at the amplitude corresponding to the focal length of the zoom lens device 1 is provided, whereby the optical path length between the focusing lens 2 and imaging plane is made automatically variable by making the amplitude of the vibration smaller when the focal length of the zoom lens 1 is longer and the amplitude larger when the focal length is shorter.
COPYRIGHT: (C)1980,JPO&Japio
JP14929178A 1978-12-01 1978-12-01 Automatic focusing device Granted JPS5576309A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14929178A JPS5576309A (en) 1978-12-01 1978-12-01 Automatic focusing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14929178A JPS5576309A (en) 1978-12-01 1978-12-01 Automatic focusing device

Publications (2)

Publication Number Publication Date
JPS5576309A true JPS5576309A (en) 1980-06-09
JPS6214806B2 JPS6214806B2 (en) 1987-04-03

Family

ID=15471961

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14929178A Granted JPS5576309A (en) 1978-12-01 1978-12-01 Automatic focusing device

Country Status (1)

Country Link
JP (1) JPS5576309A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5888710A (en) * 1981-12-21 1983-05-26 Nippon Kogaku Kk <Nikon> Photographic lens structure for automatic focusing
JPS5888728A (en) * 1981-12-21 1983-05-26 Nippon Kogaku Kk <Nikon> Automatic focusing device of camera
JPS58194005A (en) * 1982-05-08 1983-11-11 Nippon Kogaku Kk <Nikon> Automatic focusing zoom lens device
JPS5937510A (en) * 1982-08-27 1984-03-01 Sony Corp Autofocus device
JPS59101609A (en) * 1982-12-01 1984-06-12 Hitachi Denshi Ltd Automatic focusing device
JPS60142678A (en) * 1983-12-28 1985-07-27 Matsushita Electric Ind Co Ltd Automatic focus matching device
JPS62172312A (en) * 1986-01-24 1987-07-29 Matsushita Electric Ind Co Ltd Automatic focus adjusting device
US4842387A (en) * 1987-02-06 1989-06-27 Hitachi, Ltd. Automatic focusing apparatus for use in video camera and the like
JPH0386314U (en) * 1983-11-07 1991-08-30
JPH0775000A (en) * 1994-08-22 1995-03-17 Hitachi Ltd Focusing device for video camera
JPH09181957A (en) * 1997-01-27 1997-07-11 Hitachi Ltd Video camera with automatic focus means

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0397975U (en) * 1990-01-24 1991-10-09
JP6918741B2 (en) 2018-04-27 2021-08-11 株式会社クボタ Work equipment and work equipment equipped with this work equipment
WO2019208815A1 (en) 2018-04-27 2019-10-31 株式会社クボタ Power generator unit and working machine
JP7059096B2 (en) 2018-04-27 2022-04-25 株式会社クボタ Work equipment spraying support system
JP6949773B2 (en) 2018-04-27 2021-10-13 株式会社クボタ Work machine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS459617Y1 (en) * 1968-12-17 1970-05-06
JPS5156626A (en) * 1974-11-13 1976-05-18 Canon Kk JIDOSHOTENCHOSETSUSOCHI

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS459617Y1 (en) * 1968-12-17 1970-05-06
JPS5156626A (en) * 1974-11-13 1976-05-18 Canon Kk JIDOSHOTENCHOSETSUSOCHI

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0470614B2 (en) * 1981-12-21 1992-11-11 Nippon Kogaku Kk
JPS5888728A (en) * 1981-12-21 1983-05-26 Nippon Kogaku Kk <Nikon> Automatic focusing device of camera
JPS5888710A (en) * 1981-12-21 1983-05-26 Nippon Kogaku Kk <Nikon> Photographic lens structure for automatic focusing
JPH0519125B2 (en) * 1981-12-21 1993-03-15 Nippon Kogaku Kk
JPS58194005A (en) * 1982-05-08 1983-11-11 Nippon Kogaku Kk <Nikon> Automatic focusing zoom lens device
JPH0559406B2 (en) * 1982-05-08 1993-08-31 Nippon Kogaku Kk
JPS5937510A (en) * 1982-08-27 1984-03-01 Sony Corp Autofocus device
JPS59101609A (en) * 1982-12-01 1984-06-12 Hitachi Denshi Ltd Automatic focusing device
JPH0386314U (en) * 1983-11-07 1991-08-30
JPS60142678A (en) * 1983-12-28 1985-07-27 Matsushita Electric Ind Co Ltd Automatic focus matching device
JPS62172312A (en) * 1986-01-24 1987-07-29 Matsushita Electric Ind Co Ltd Automatic focus adjusting device
US4842387A (en) * 1987-02-06 1989-06-27 Hitachi, Ltd. Automatic focusing apparatus for use in video camera and the like
JPH0775000A (en) * 1994-08-22 1995-03-17 Hitachi Ltd Focusing device for video camera
JPH09181957A (en) * 1997-01-27 1997-07-11 Hitachi Ltd Video camera with automatic focus means

Also Published As

Publication number Publication date
JPS6214806B2 (en) 1987-04-03

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