JPS58142306A - 焦点検出方法 - Google Patents

焦点検出方法

Info

Publication number
JPS58142306A
JPS58142306A JP2361582A JP2361582A JPS58142306A JP S58142306 A JPS58142306 A JP S58142306A JP 2361582 A JP2361582 A JP 2361582A JP 2361582 A JP2361582 A JP 2361582A JP S58142306 A JPS58142306 A JP S58142306A
Authority
JP
Japan
Prior art keywords
focus
focus detection
photoelectric conversion
conversion element
detection method
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
JP2361582A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0328689B2 (enExample
Inventor
Kenji Suzuki
謙二 鈴木
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)
  • Testing Of Optical Devices Or Fibers (AREA)
  • Focusing (AREA)
  • Automatic Focus Adjustment (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 true JPS58142306A (ja) 1983-08-24
JPH0328689B2 JPH0328689B2 (enExample) 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 (enExample)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6426810A (en) * 1986-09-22 1989-01-30 Fuji Photo Film Co Ltd Phase difference detecting device
US4954701A (en) * 1987-12-14 1990-09-04 Canon Kabushiki Kaisha Focus detecting apparatus provided with a plurality of detecting fields
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
US5381206A (en) * 1991-07-22 1995-01-10 Canon Kabushiki Kaisha Focus detecting device
US5422700A (en) * 1991-04-05 1995-06-06 Canon Kabushiki Kaisha Camera in which focus is detected to a plurality of viewfields within a observation block which is selected by visual axis detecting means
US5440367A (en) * 1990-11-07 1995-08-08 Canon Kabushiki Kaisha Focus detecting apparatus provided with a plurality of detection fields
US5543886A (en) * 1991-05-02 1996-08-06 Canon Kabushiki Kaisha Focus state detection apparatus
US5678097A (en) * 1990-07-06 1997-10-14 Canon Kabushiki Kaisha Focus detecting device
US5862417A (en) * 1995-08-31 1999-01-19 Nikon Corporation Automatic focus adjustment apparatus

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6426810A (en) * 1986-09-22 1989-01-30 Fuji Photo Film Co Ltd Phase difference detecting device
US4954701A (en) * 1987-12-14 1990-09-04 Canon Kabushiki Kaisha Focus detecting apparatus provided with a plurality of detecting fields
US5678097A (en) * 1990-07-06 1997-10-14 Canon Kabushiki Kaisha Focus detecting device
US5440367A (en) * 1990-11-07 1995-08-08 Canon Kabushiki Kaisha Focus detecting apparatus provided with a plurality of detection fields
US5422700A (en) * 1991-04-05 1995-06-06 Canon Kabushiki Kaisha Camera in which focus is detected to a plurality of viewfields within a observation block which is selected by visual axis detecting means
US6229959B1 (en) 1991-04-05 2001-05-08 Canon Kabushiki Kaisha Camera in which focus is detected from among a plurality of viewfields in conjunction with detection of the visual axis
US5543886A (en) * 1991-05-02 1996-08-06 Canon Kabushiki Kaisha Focus state detection apparatus
US5381206A (en) * 1991-07-22 1995-01-10 Canon Kabushiki Kaisha Focus detecting device
US5667270A (en) * 1991-07-22 1997-09-16 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
US5862417A (en) * 1995-08-31 1999-01-19 Nikon Corporation Automatic focus adjustment apparatus

Also Published As

Publication number Publication date
JPH0328689B2 (enExample) 1991-04-19

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