JPH0115188B2 - - Google Patents

Info

Publication number
JPH0115188B2
JPH0115188B2 JP56157493A JP15749381A JPH0115188B2 JP H0115188 B2 JPH0115188 B2 JP H0115188B2 JP 56157493 A JP56157493 A JP 56157493A JP 15749381 A JP15749381 A JP 15749381A JP H0115188 B2 JPH0115188 B2 JP H0115188B2
Authority
JP
Japan
Prior art keywords
signal
focus signal
helicoid
mountain
voltage
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.)
Expired
Application number
JP56157493A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5858505A (ja
Inventor
Kentaro Hanma
Yoshuki Kono
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP56157493A priority Critical patent/JPS5858505A/ja
Publication of JPS5858505A publication Critical patent/JPS5858505A/ja
Publication of JPH0115188B2 publication Critical patent/JPH0115188B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/28—Systems for automatic generation of focusing signals
    • G02B7/36—Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)
JP56157493A 1981-10-05 1981-10-05 ビデオカメラのオ−トフオ−カス装置 Granted JPS5858505A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56157493A JPS5858505A (ja) 1981-10-05 1981-10-05 ビデオカメラのオ−トフオ−カス装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56157493A JPS5858505A (ja) 1981-10-05 1981-10-05 ビデオカメラのオ−トフオ−カス装置

Publications (2)

Publication Number Publication Date
JPS5858505A JPS5858505A (ja) 1983-04-07
JPH0115188B2 true JPH0115188B2 (en, 2012) 1989-03-16

Family

ID=15650887

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56157493A Granted JPS5858505A (ja) 1981-10-05 1981-10-05 ビデオカメラのオ−トフオ−カス装置

Country Status (1)

Country Link
JP (1) JPS5858505A (en, 2012)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7532303B2 (en) 2006-05-16 2009-05-12 Citizen Holdings Co., Ltd. Automatic focusing apparatus

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4841370A (en) * 1986-11-17 1989-06-20 Sanyo Electric Co., Ltd. Automatic focusing circuit for automatically matching focus in response to video signal
JPH0644806B2 (ja) * 1987-02-18 1994-06-08 三洋電機株式会社 オ−トフオ−カス回路
JP2517415B2 (ja) * 1989-11-22 1996-07-24 三洋電機株式会社 オ―トフォ―カス方法
DE69127112T2 (de) * 1990-02-28 1998-03-05 Sanyo Electric Co Automatisches Fokussierungsgerät zur automatischen Fokusanpassung in Abhängigkeit von Videosignalen
JP3500539B2 (ja) * 1993-02-25 2004-02-23 富士通株式会社 赤外線カメラの自動焦点調節方式

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4852231A (en, 2012) * 1971-11-01 1973-07-23
JPS608536B2 (ja) * 1976-05-13 1985-03-04 オリンパス光学工業株式会社 光学式記録再生装置における光ビ−ム制御装置
JPS54161928A (en) * 1978-06-12 1979-12-22 Canon Inc Focus detector
JPS55111929A (en) * 1979-02-21 1980-08-29 Ricoh Co Ltd Automatic focusing device
JPS5651164A (en) * 1979-10-03 1981-05-08 Hitachi Ltd Automatic focusing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7532303B2 (en) 2006-05-16 2009-05-12 Citizen Holdings Co., Ltd. Automatic focusing apparatus

Also Published As

Publication number Publication date
JPS5858505A (ja) 1983-04-07

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