FR2676837B1 - Appareil de detection de mise au point. - Google Patents

Appareil de detection de mise au point.

Info

Publication number
FR2676837B1
FR2676837B1 FR9206044A FR9206044A FR2676837B1 FR 2676837 B1 FR2676837 B1 FR 2676837B1 FR 9206044 A FR9206044 A FR 9206044A FR 9206044 A FR9206044 A FR 9206044A FR 2676837 B1 FR2676837 B1 FR 2676837B1
Authority
FR
France
Prior art keywords
detection apparatus
focusing detection
focusing
detection
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 - Fee Related
Application number
FR9206044A
Other languages
English (en)
Other versions
FR2676837A1 (fr
Inventor
Takayuki Sensui
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.)
Pentax Corp
Original Assignee
Asahi Kogaku Kogyo Co 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 Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Publication of FR2676837A1 publication Critical patent/FR2676837A1/fr
Application granted granted Critical
Publication of FR2676837B1 publication Critical patent/FR2676837B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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)
FR9206044A 1991-05-20 1992-05-19 Appareil de detection de mise au point. Expired - Fee Related FR2676837B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21815591 1991-05-20

Publications (2)

Publication Number Publication Date
FR2676837A1 FR2676837A1 (fr) 1992-11-27
FR2676837B1 true FR2676837B1 (fr) 1995-02-17

Family

ID=16715504

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9206044A Expired - Fee Related FR2676837B1 (fr) 1991-05-20 1992-05-19 Appareil de detection de mise au point.

Country Status (4)

Country Link
US (1) US5327192A (fr)
DE (1) DE4216724C2 (fr)
FR (1) FR2676837B1 (fr)
GB (1) GB2256108B (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5206498A (en) * 1991-06-07 1993-04-27 Asahi Kogaku Kogyo Kabushiki Kaisha Focus detecting apparatus having variable power condenser lens
US5530236A (en) * 1993-07-08 1996-06-25 Asahi Kogaku Kogyo Kabushiki Kaisha Focus detecting apparatus with particular arrangement of light receiving portions
DE19614235C2 (de) * 1995-04-10 2001-06-28 Asahi Optical Co Ltd Vermessungsinstrument mit Autofokussystem
JP2000121927A (ja) 1998-10-09 2000-04-28 Asahi Optical Co Ltd 焦点検出装置
US20070182844A1 (en) * 2003-03-09 2007-08-09 Latia Imaging Pty Ltd Optical system for producing differently focused images
JP4857877B2 (ja) * 2006-04-11 2012-01-18 株式会社ニコン 撮像装置およびカメラ

Family Cites Families (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4047187A (en) * 1974-04-01 1977-09-06 Canon Kabushiki Kaisha System for exposure measurement and/or focus detection by means of image senser
JPS6044649B2 (ja) * 1977-05-20 1985-10-04 旭光学工業株式会社 一眼レフレツクスカメラの焦点検出装置
JPS5413330A (en) * 1977-07-01 1979-01-31 Olympus Optical Co Ltd Automatic focus adjusting system
US4246476A (en) * 1979-04-12 1981-01-20 Honeywell Inc. Automatic focusing apparatus for use with a plurality of lenses
JPS5632126A (en) * 1979-08-24 1981-04-01 Canon Inc Ttl type focus detector for lens interchangeable type camera
JPS5732406A (en) * 1980-08-05 1982-02-22 Canon Inc Focus detector
US4548495A (en) * 1981-02-27 1985-10-22 Takeomi Suzuki Proper focusing state detecting device
JPS5940610A (ja) * 1982-08-30 1984-03-06 Canon Inc 合焦検出装置
JPS5965814A (ja) * 1982-10-07 1984-04-14 Canon Inc 合焦検出装置
US4636624A (en) * 1983-01-10 1987-01-13 Minolta Camera Kabushiki Kaisha Focus detecting device for use with cameras
JPS6032012A (ja) * 1983-08-01 1985-02-19 Minolta Camera Co Ltd カメラの焦点検出装置
JPH067219B2 (ja) * 1983-08-16 1994-01-26 ミノルタカメラ株式会社 カメラの焦点検出装置
US4849782A (en) * 1985-06-28 1989-07-18 Canon Kabushiki Kaisha Focus detecting device
JPH0664225B2 (ja) * 1985-08-27 1994-08-22 ミノルタカメラ株式会社 焦点調節装置
GB2183419B (en) * 1985-10-22 1990-08-29 Canon Kk Focusing state detection apparatus for objective lens
JPH0672972B2 (ja) * 1986-02-17 1994-09-14 ミノルタカメラ株式会社 焦点検出装置
DE3637742A1 (de) * 1986-11-05 1988-05-11 Leitz Ernst Gmbh Fotografische kamera mit einem wechselobjektiv
JP2666142B2 (ja) * 1987-02-04 1997-10-22 旭光学工業株式会社 カメラの自動焦点検出装置
JP2630771B2 (ja) * 1987-03-26 1997-07-16 旭光学工業株式会社 焦点検出光学系
US4857720A (en) * 1987-06-24 1989-08-15 Minolta Camera Kabushiki Kaisha Focus detecting system using multiple portions of the image to be focussed
US5005041A (en) * 1987-11-05 1991-04-02 Canon Kabushiki Kaisha Focus detecting apparatus having a plurality of focus detecting areas
US4939357A (en) * 1987-11-20 1990-07-03 Asahi Kogaku Kogyo K.K. Optical system for a focal point detecting device
JPH01154011A (ja) * 1987-12-10 1989-06-16 Canon Inc 焦点検出装置
US5017005A (en) * 1988-03-18 1991-05-21 Asahi Kogaku Kogyo Kabushiki Kaisha Focal point detecting optical apparatus
JP2886865B2 (ja) * 1988-05-16 1999-04-26 キヤノン株式会社 焦点調節状態検出装置
JPH0250115A (ja) * 1988-08-11 1990-02-20 Minolta Camera Co Ltd 焦点検出用光学装置
JPH0258012A (ja) * 1988-08-24 1990-02-27 Nikon Corp 焦点検出装置
US5155518A (en) * 1988-08-24 1992-10-13 Nikon Corporation Focus detecting apparatus
GB2223140B (en) * 1988-08-31 1993-03-03 Canon Kk Automatic focusing apparatus for camera
JP2893768B2 (ja) * 1989-12-01 1999-05-24 株式会社ニコン 焦点検出装置
EP0479550B1 (fr) * 1990-10-01 1998-01-14 Nikon Corporation Dispositif de détection de mise au point

Also Published As

Publication number Publication date
GB2256108A (en) 1992-11-25
GB9210771D0 (en) 1992-07-08
DE4216724C2 (de) 1996-06-27
DE4216724A1 (de) 1992-11-26
GB2256108B (en) 1995-05-10
FR2676837A1 (fr) 1992-11-27
US5327192A (en) 1994-07-05

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Legal Events

Date Code Title Description
ST Notification of lapse