JPH0328689B2 - - Google Patents

Info

Publication number
JPH0328689B2
JPH0328689B2 JP2361582A JP2361582A JPH0328689B2 JP H0328689 B2 JPH0328689 B2 JP H0328689B2 JP 2361582 A JP2361582 A JP 2361582A JP 2361582 A JP2361582 A JP 2361582A JP H0328689 B2 JPH0328689 B2 JP H0328689B2
Authority
JP
Japan
Prior art keywords
focus
focus state
lens
images
pupil
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
JP2361582A
Other languages
English (en)
Japanese (ja)
Other versions
JPS58142306A (ja
Inventor
Kenji Suzuki
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP2361582A priority Critical patent/JPS58142306A/ja
Priority to US06/464,578 priority patent/US4559446A/en
Priority to DE3305676A priority patent/DE3305676C2/de
Publication of JPS58142306A publication Critical patent/JPS58142306A/ja
Publication of JPH0328689B2 publication Critical patent/JPH0328689B2/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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Automatic Focus Adjustment (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)
  • Focusing (AREA)
JP2361582A 1982-02-18 1982-02-18 焦点検出方法 Granted JPS58142306A (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2361582A JPS58142306A (ja) 1982-02-18 1982-02-18 焦点検出方法
US06/464,578 US4559446A (en) 1982-02-18 1983-02-07 Focus detecting system using light from an imaging optical system for focus detection
DE3305676A DE3305676C2 (de) 1982-02-18 1983-02-18 Vorrichtung zur Schärfeermittlung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2361582A JPS58142306A (ja) 1982-02-18 1982-02-18 焦点検出方法

Publications (2)

Publication Number Publication Date
JPS58142306A JPS58142306A (ja) 1983-08-24
JPH0328689B2 true JPH0328689B2 (en, 2012) 1991-04-19

Family

ID=12115507

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2361582A Granted JPS58142306A (ja) 1982-02-18 1982-02-18 焦点検出方法

Country Status (1)

Country Link
JP (1) JPS58142306A (en, 2012)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0810296B2 (ja) * 1986-09-22 1996-01-31 富士写真フイルム株式会社 位相差検出装置
JPH07117645B2 (ja) * 1987-12-14 1995-12-18 キヤノン株式会社 焦点検出装置
JP2756351B2 (ja) * 1990-07-06 1998-05-25 キヤノン株式会社 焦点検出装置
US5440367A (en) * 1990-11-07 1995-08-08 Canon Kabushiki Kaisha Focus detecting apparatus provided with a plurality of detection fields
JP3210027B2 (ja) 1991-04-05 2001-09-17 キヤノン株式会社 カメラ
JP2927047B2 (ja) * 1991-05-02 1999-07-28 キヤノン株式会社 焦点検出装置
US5381206A (en) * 1991-07-22 1995-01-10 Canon Kabushiki Kaisha Focus detecting device
US5367153A (en) * 1991-11-01 1994-11-22 Canon Kabushiki Kaisha Apparatus for detecting the focus adjusting state of an objective lens by performing filter processing
JPH0968644A (ja) * 1995-08-31 1997-03-11 Nikon Corp 自動焦点調節装置

Also Published As

Publication number Publication date
JPS58142306A (ja) 1983-08-24

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