JPS6236207B2 - - Google Patents

Info

Publication number
JPS6236207B2
JPS6236207B2 JP54030046A JP3004679A JPS6236207B2 JP S6236207 B2 JPS6236207 B2 JP S6236207B2 JP 54030046 A JP54030046 A JP 54030046A JP 3004679 A JP3004679 A JP 3004679A JP S6236207 B2 JPS6236207 B2 JP S6236207B2
Authority
JP
Japan
Prior art keywords
spatial frequency
circuit
frequency component
output
absolute value
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
JP54030046A
Other languages
English (en)
Japanese (ja)
Other versions
JPS55124112A (en
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
Original Assignee
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 Kogaku KK filed Critical Nippon Kogaku KK
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 JPS55124112A (en) 1980-09-25
JPS6236207B2 true JPS6236207B2 (en, 2012) 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 (en, 2012)

Families Citing this family (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
JPH07119885B2 (ja) * 1991-07-01 1995-12-20 株式会社ニコン 焦点検出装置
US6636635B2 (en) 1995-11-01 2003-10-21 Canon Kabushiki Kaisha Object extraction method, and image sensing apparatus using the method

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH621489A5 (en, 2012) * 1977-06-09 1981-02-13 Lonza Ag

Also Published As

Publication number Publication date
JPS55124112A (en) 1980-09-25

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