JPH0551883B2 - - Google Patents

Info

Publication number
JPH0551883B2
JPH0551883B2 JP56185724A JP18572481A JPH0551883B2 JP H0551883 B2 JPH0551883 B2 JP H0551883B2 JP 56185724 A JP56185724 A JP 56185724A JP 18572481 A JP18572481 A JP 18572481A JP H0551883 B2 JPH0551883 B2 JP H0551883B2
Authority
JP
Japan
Prior art keywords
photoelectric conversion
phase difference
focus detection
subject image
lens system
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 - Lifetime
Application number
JP56185724A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5887512A (ja
Inventor
Yosuke Kusaka
Jun Shimomura
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.)
Nikon Corp
Original Assignee
Nippon Kogaku 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 Nippon Kogaku KK filed Critical Nippon Kogaku KK
Priority to JP56185724A priority Critical patent/JPS5887512A/ja
Priority to DE19823242636 priority patent/DE3242636A1/de
Publication of JPS5887512A publication Critical patent/JPS5887512A/ja
Priority to US06/858,538 priority patent/US4644148A/en
Publication of JPH0551883B2 publication Critical patent/JPH0551883B2/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
    • G02B7/34—Systems for automatic generation of focusing signals using different areas in a pupil plane
    • G02B7/346—Systems for automatic generation of focusing signals using different areas in a pupil plane using horizontal and vertical areas in the pupil plane, i.e. wide area autofocusing

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)
JP56185724A 1981-11-19 1981-11-19 焦点検出装置 Granted JPS5887512A (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP56185724A JPS5887512A (ja) 1981-11-19 1981-11-19 焦点検出装置
DE19823242636 DE3242636A1 (de) 1981-11-19 1982-11-18 Einrichtung zur feststellung der scharfeinstellung
US06/858,538 US4644148A (en) 1981-11-19 1986-04-29 Focus detecting apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56185724A JPS5887512A (ja) 1981-11-19 1981-11-19 焦点検出装置

Publications (2)

Publication Number Publication Date
JPS5887512A JPS5887512A (ja) 1983-05-25
JPH0551883B2 true JPH0551883B2 (en, 2012) 1993-08-03

Family

ID=16175744

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56185724A Granted JPS5887512A (ja) 1981-11-19 1981-11-19 焦点検出装置

Country Status (3)

Country Link
US (1) US4644148A (en, 2012)
JP (1) JPS5887512A (en, 2012)
DE (1) DE3242636A1 (en, 2012)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021251497A1 (ja) * 2020-06-11 2021-12-16 凸版印刷株式会社 評価指標値算出装置、評価指標値算出方法、および評価指標値算出プログラム
JP2021196231A (ja) * 2020-06-11 2021-12-27 凸版印刷株式会社 評価指標算出装置、評価指標算出方法、および評価指標算出プログラム
JP2021196452A (ja) * 2020-06-11 2021-12-27 凸版印刷株式会社 適否判断装置、適否判断方法、および適否判断プログラム

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0672973B2 (ja) * 1983-06-30 1994-09-14 株式会社リコー オ−トフオ−カス方法
US4733263A (en) * 1985-11-20 1988-03-22 Minolta Camera Kabushiki Kaisha Photographic camera
US5134431A (en) * 1986-10-14 1992-07-28 Minolta Camera Kabushiki Kaisha Photographic camera including a memory for storing adjustment data and a means for adjusting functions of the camera based on the stored adjustment data
JPS63131111A (ja) * 1986-11-20 1988-06-03 Minolta Camera Co Ltd カメラの焦点検出装置
US4814889A (en) * 1987-10-07 1989-03-21 General Electric Company Automatic focussing system
US4994664A (en) * 1989-03-27 1991-02-19 Massachusetts Institute Of Technology Optically coupled focal plane arrays using lenslets and multiplexers
US5402504A (en) * 1989-12-08 1995-03-28 Xerox Corporation Segmentation of text styles
JP3103587B2 (ja) * 1990-04-25 2000-10-30 オリンパス光学工業株式会社 自動合焦装置
US5076687A (en) * 1990-08-28 1991-12-31 Massachusetts Institute Of Technology Optical ranging apparatus
JPH0887600A (ja) * 1994-09-19 1996-04-02 Topcon Corp 特徴抽出装置
US6685000B2 (en) * 2000-05-19 2004-02-03 Kabushiki Kaisha Nippon Conlux Coin discrimination method and device
US7745772B2 (en) 2005-05-30 2010-06-29 Nikon Corporation Image forming state detection device
JP4802864B2 (ja) * 2006-05-29 2011-10-26 株式会社ニコン 焦点検出装置および撮像装置
JP5034556B2 (ja) 2007-02-27 2012-09-26 株式会社ニコン 焦点検出装置および撮像装置
JP2008209761A (ja) * 2007-02-27 2008-09-11 Nikon Corp 焦点検出装置および撮像装置
JP5914055B2 (ja) 2012-03-06 2016-05-11 キヤノン株式会社 撮像装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1173281A (en) * 1965-09-15 1969-12-03 Nat Res Dev Improvements in or relating to a System and Apparatus for Improving the Contrast of Analogue Density Patterns, such as Printed Character
US4185191A (en) * 1978-06-05 1980-01-22 Honeywell Inc. Range determination system
JPS5598709A (en) * 1979-01-20 1980-07-28 Nippon Kogaku Kk <Nikon> Focusing detector
DE3006244C2 (de) * 1979-02-20 1984-08-30 Ricoh Co., Ltd., Tokio/Tokyo Einrichtung zur Feststellung der Scharfeinstellung eines Objektivs auf einen Gegenstand
JPS5732406A (en) * 1980-08-05 1982-02-22 Canon Inc Focus detector
JPS57108810A (en) * 1980-12-26 1982-07-07 Nippon Kogaku Kk <Nikon> Focus detector

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021251497A1 (ja) * 2020-06-11 2021-12-16 凸版印刷株式会社 評価指標値算出装置、評価指標値算出方法、および評価指標値算出プログラム
JP2021196231A (ja) * 2020-06-11 2021-12-27 凸版印刷株式会社 評価指標算出装置、評価指標算出方法、および評価指標算出プログラム
JP2021196452A (ja) * 2020-06-11 2021-12-27 凸版印刷株式会社 適否判断装置、適否判断方法、および適否判断プログラム

Also Published As

Publication number Publication date
US4644148A (en) 1987-02-17
DE3242636A1 (de) 1983-05-26
JPS5887512A (ja) 1983-05-25

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