JPS6318172B2 - - Google Patents

Info

Publication number
JPS6318172B2
JPS6318172B2 JP53113018A JP11301878A JPS6318172B2 JP S6318172 B2 JPS6318172 B2 JP S6318172B2 JP 53113018 A JP53113018 A JP 53113018A JP 11301878 A JP11301878 A JP 11301878A JP S6318172 B2 JPS6318172 B2 JP S6318172B2
Authority
JP
Japan
Prior art keywords
output
position information
information signal
focus
circuit
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
JP53113018A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5540423A (en
Inventor
Shingi Hagiuda
Hiroaki Tanaka
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 JP11301878A priority Critical patent/JPS5540423A/ja
Priority to DE19792936992 priority patent/DE2936992A1/de
Publication of JPS5540423A publication Critical patent/JPS5540423A/ja
Publication of JPS6318172B2 publication Critical patent/JPS6318172B2/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
    • G02B7/36—Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C3/00—Measuring distances in line of sight; Optical rangefinders
    • G01C3/02—Details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C3/00—Measuring distances in line of sight; Optical rangefinders
    • G01C3/32—Measuring distances in line of sight; Optical rangefinders by focusing the object, e.g. on a ground glass screen

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Optics & Photonics (AREA)
  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)
  • Measurement Of Optical Distance (AREA)
JP11301878A 1978-09-14 1978-09-14 Distance information judging circuit of auto focus detector Granted JPS5540423A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP11301878A JPS5540423A (en) 1978-09-14 1978-09-14 Distance information judging circuit of auto focus detector
DE19792936992 DE2936992A1 (de) 1978-09-14 1979-09-13 Entfernungswert-auswertungsschaltung fuer eine fokus-detektoreinrichtung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11301878A JPS5540423A (en) 1978-09-14 1978-09-14 Distance information judging circuit of auto focus detector

Publications (2)

Publication Number Publication Date
JPS5540423A JPS5540423A (en) 1980-03-21
JPS6318172B2 true JPS6318172B2 (enEXAMPLES) 1988-04-18

Family

ID=14601368

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11301878A Granted JPS5540423A (en) 1978-09-14 1978-09-14 Distance information judging circuit of auto focus detector

Country Status (2)

Country Link
JP (1) JPS5540423A (enEXAMPLES)
DE (1) DE2936992A1 (enEXAMPLES)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4492452A (en) * 1982-04-07 1985-01-08 Tokyo Shibaura Denki Kabushiki Kaisha Picture blur-alarm device for a camera
JPS6166605A (ja) * 1984-09-11 1986-04-05 Noriisa Tao 木粉末成型品の製造方法
JP2624959B2 (ja) * 1986-11-26 1997-06-25 松下電工株式会社 鉱物繊維板の曲面加工方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3783269A (en) * 1972-06-05 1974-01-01 Honeywell Inc Automatic focus positioning circuit
JPS5932762B2 (ja) * 1974-02-16 1984-08-10 旭光学工業 （株） 焦点検出装置
US4010479A (en) * 1974-07-10 1977-03-01 Asahi Kogaku Kogyo Kabushiki Kaisha Focusing apparatus for optical systems
JPS58708B2 (ja) * 1975-03-14 1983-01-07 株式会社横河電機製作所 ジドウシヨウテンチヨウセツソウチ

Also Published As

Publication number Publication date
JPS5540423A (en) 1980-03-21
DE2936992C2 (enEXAMPLES) 1991-02-14
DE2936992A1 (de) 1980-04-03

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