JPS5772110A - Focus position detector - Google Patents

Focus position detector

Info

Publication number
JPS5772110A
JPS5772110A JP55149061A JP14906180A JPS5772110A JP S5772110 A JPS5772110 A JP S5772110A JP 55149061 A JP55149061 A JP 55149061A JP 14906180 A JP14906180 A JP 14906180A JP S5772110 A JPS5772110 A JP S5772110A
Authority
JP
Japan
Prior art keywords
visual field
narrow
photodetecting part
photodetecting
rises
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.)
Pending
Application number
JP55149061A
Other languages
English (en)
Inventor
Takao Kinoshita
Mitsuya Hosoe
Masayoshi Yamamichi
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 JP55149061A priority Critical patent/JPS5772110A/ja
Priority to US06/313,583 priority patent/US4411504A/en
Priority to DE19813142000 priority patent/DE3142000A1/de
Publication of JPS5772110A publication Critical patent/JPS5772110A/ja
Pending 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
    • G02B7/38—Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals measured at different points on the optical axis, e.g. focussing on two or more planes and comparing image data

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Automatic Focus Adjustment (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)
JP55149061A 1980-10-23 1980-10-23 Focus position detector Pending JPS5772110A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP55149061A JPS5772110A (en) 1980-10-23 1980-10-23 Focus position detector
US06/313,583 US4411504A (en) 1980-10-23 1981-10-21 Focus detecting system
DE19813142000 DE3142000A1 (de) 1980-10-23 1981-10-22 "scharfeinstellungs-ermittlungsystem"

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55149061A JPS5772110A (en) 1980-10-23 1980-10-23 Focus position detector

Publications (1)

Publication Number Publication Date
JPS5772110A true JPS5772110A (en) 1982-05-06

Family

ID=15466811

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55149061A Pending JPS5772110A (en) 1980-10-23 1980-10-23 Focus position detector

Country Status (3)

Country Link
US (1) US4411504A (ja)
JP (1) JPS5772110A (ja)
DE (1) DE3142000A1 (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5817786A (ja) * 1981-07-23 1983-02-02 Canon Inc 撮像装置
JPS5897009A (ja) * 1981-12-04 1983-06-09 Olympus Optical Co Ltd 自動焦点調節方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1547457A1 (de) * 1966-01-22 1970-02-19 Schneider Co Optische Werke Verfahren und Vorrichtung zur automatischen Scharfeinstellung optischer Systeme
JPS6052404B2 (ja) * 1975-06-13 1985-11-19 株式会社日立製作所 自動焦点調節装置
US4083056A (en) * 1975-09-09 1978-04-04 Asahi Kogaku Kogyo Kabushiki Kaisha Focus detecting device for single-lens reflex cameras
JPS54161325A (en) * 1978-06-10 1979-12-20 Ricoh Co Ltd Focus detector
JPS5576312A (en) * 1978-12-04 1980-06-09 Canon Inc Focus detecting system of image
US4349254A (en) * 1979-02-13 1982-09-14 Asahi Kogaku Kogyo Kabushiki Kaisha Camera focus detecting device

Also Published As

Publication number Publication date
US4411504A (en) 1983-10-25
DE3142000A1 (de) 1982-06-03

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