JPS55124112A - Focusing detector - Google Patents

Focusing detector

Info

Publication number
JPS55124112A
JPS55124112A JP3004679A JP3004679A JPS55124112A JP S55124112 A JPS55124112 A JP S55124112A JP 3004679 A JP3004679 A JP 3004679A JP 3004679 A JP3004679 A JP 3004679A JP S55124112 A JPS55124112 A JP S55124112A
Authority
JP
Japan
Prior art keywords
circuits
space frequency
signals
information
space
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
JP3004679A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6236207B2 (enExample
Inventor
Takeshi Utagawa
Kunihisa Hoshino
Hiroshi Shirasu
Akira Ogasawara
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
Nippon Chemical Industrial Co Ltd
Original Assignee
Nippon Chemical Industrial Co Ltd
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 Chemical Industrial Co Ltd, Nippon Kogaku KK filed Critical Nippon Chemical Industrial Co Ltd
Priority to JP3004679A priority Critical patent/JPS55124112A/ja
Priority to US06/112,350 priority patent/US4336450A/en
Priority to DE19803001767 priority patent/DE3001767A1/de
Publication of JPS55124112A publication Critical patent/JPS55124112A/ja
Publication of JPS6236207B2 publication Critical patent/JPS6236207B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)
JP3004679A 1979-01-20 1979-03-16 Focusing detector Granted JPS55124112A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP3004679A JPS55124112A (en) 1979-03-16 1979-03-16 Focusing detector
US06/112,350 US4336450A (en) 1979-01-20 1980-01-15 Focus detecting apparatus
DE19803001767 DE3001767A1 (de) 1979-01-20 1980-01-18 Fokussiererfassungsvorrichtung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3004679A JPS55124112A (en) 1979-03-16 1979-03-16 Focusing detector

Publications (2)

Publication Number Publication Date
JPS55124112A true JPS55124112A (en) 1980-09-25
JPS6236207B2 JPS6236207B2 (enExample) 1987-08-06

Family

ID=12292872

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3004679A Granted JPS55124112A (en) 1979-01-20 1979-03-16 Focusing detector

Country Status (1)

Country Link
JP (1) JPS55124112A (enExample)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61209413A (ja) * 1986-01-20 1986-09-17 Nippon Kogaku Kk <Nikon> 焦点検出装置
JPH04338905A (ja) * 1991-07-01 1992-11-26 Nikon Corp 焦点検出装置
EP0774730A3 (en) * 1995-11-01 1998-04-01 Canon Kabushiki Kaisha Object extraction method, and image sensing apparatus using the method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS545270A (en) * 1977-06-09 1979-01-16 Lonza Ag Rotary filter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS545270A (en) * 1977-06-09 1979-01-16 Lonza Ag Rotary filter

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61209413A (ja) * 1986-01-20 1986-09-17 Nippon Kogaku Kk <Nikon> 焦点検出装置
JPH04338905A (ja) * 1991-07-01 1992-11-26 Nikon Corp 焦点検出装置
EP0774730A3 (en) * 1995-11-01 1998-04-01 Canon Kabushiki Kaisha Object extraction method, and image sensing apparatus using the method
US6636635B2 (en) 1995-11-01 2003-10-21 Canon Kabushiki Kaisha Object extraction method, and image sensing apparatus using the method
US6993184B2 (en) 1995-11-01 2006-01-31 Canon Kabushiki Kaisha Object extraction method, and image sensing apparatus using the method

Also Published As

Publication number Publication date
JPS6236207B2 (enExample) 1987-08-06

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