JPS6237364B2 - - Google Patents

Info

Publication number
JPS6237364B2
JPS6237364B2 JP61008089A JP808986A JPS6237364B2 JP S6237364 B2 JPS6237364 B2 JP S6237364B2 JP 61008089 A JP61008089 A JP 61008089A JP 808986 A JP808986 A JP 808986A JP S6237364 B2 JPS6237364 B2 JP S6237364B2
Authority
JP
Japan
Prior art keywords
spatial frequency
phase difference
focus
output
detection means
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
JP61008089A
Other languages
English (en)
Japanese (ja)
Other versions
JPS61209413A (ja
Inventor
Takeshi Utagawa
Akira Ogasawara
Hiroshi Shirasu
Kunihisa Hoshino
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 JP808986A priority Critical patent/JPS61209413A/ja
Publication of JPS61209413A publication Critical patent/JPS61209413A/ja
Publication of JPS6237364B2 publication Critical patent/JPS6237364B2/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)
  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)
JP808986A 1986-01-20 1986-01-20 焦点検出装置 Granted JPS61209413A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP808986A JPS61209413A (ja) 1986-01-20 1986-01-20 焦点検出装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP808986A JPS61209413A (ja) 1986-01-20 1986-01-20 焦点検出装置

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP527079A Division JPS5598710A (en) 1979-01-20 1979-01-20 Focus detector

Publications (2)

Publication Number Publication Date
JPS61209413A JPS61209413A (ja) 1986-09-17
JPS6237364B2 true JPS6237364B2 (en, 2012) 1987-08-12

Family

ID=11683597

Family Applications (1)

Application Number Title Priority Date Filing Date
JP808986A Granted JPS61209413A (ja) 1986-01-20 1986-01-20 焦点検出装置

Country Status (1)

Country Link
JP (1) JPS61209413A (en, 2012)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022243461A1 (en) 2021-05-20 2022-11-24 Nlmk Clabecq Method for manufacturing a high strength steel plate and high strength steel plate

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6124564B2 (ja) * 2012-11-21 2017-05-10 キヤノン株式会社 焦点検出装置及び方法、及び撮像装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5598710A (en) * 1979-01-20 1980-07-28 Nippon Kogaku Kk <Nikon> Focus detector
JPS55124112A (en) * 1979-03-16 1980-09-25 Nippon Kogaku Kk <Nikon> Focusing detector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022243461A1 (en) 2021-05-20 2022-11-24 Nlmk Clabecq Method for manufacturing a high strength steel plate and high strength steel plate
WO2022242859A1 (en) 2021-05-20 2022-11-24 Nlmk Clabecq Method for manufacturing a high strength steel plate and high strength steel plate

Also Published As

Publication number Publication date
JPS61209413A (ja) 1986-09-17

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