JPS57165821A - Ttl automatic focusing device of camera - Google Patents

Ttl automatic focusing device of camera

Info

Publication number
JPS57165821A
JPS57165821A JP5215581A JP5215581A JPS57165821A JP S57165821 A JPS57165821 A JP S57165821A JP 5215581 A JP5215581 A JP 5215581A JP 5215581 A JP5215581 A JP 5215581A JP S57165821 A JPS57165821 A JP S57165821A
Authority
JP
Japan
Prior art keywords
signal
focusing
lens
extent
shift
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
JP5215581A
Other languages
Japanese (ja)
Other versions
JPH0149921B2 (en
Inventor
Yosuke Kusaka
Nobuo Okabe
Toru Fukuhara
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
Nikon Corp
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 Nikon Corp, Nippon Kogaku KK filed Critical Nikon Corp
Priority to JP5215581A priority Critical patent/JPS57165821A/en
Priority to DE19823213115 priority patent/DE3213115A1/en
Publication of JPS57165821A publication Critical patent/JPS57165821A/en
Publication of JPH0149921B2 publication Critical patent/JPH0149921B2/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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Automatic Focus Adjustment (AREA)
  • Focusing (AREA)
  • Structure And Mechanism Of Cameras (AREA)
  • Lens Barrels (AREA)

Abstract

PURPOSE: To apply an automatic focusing device, which moves a focusing optical system by detecting the extent of the shift of a focal plane, to various lens barrels, by providing a means of generating a standardized signal by correcting the difference of a lens barrel mechanism.
CONSTITUTION: A means 2 of controlling a motor 13 which moves a focusing lens 12 by receiving a signal from a TTL focusing detector 19 which detects the extent of the shift of a focal plane by receiving light transmitted through an objective lens inputs a signal from a means 15 of generating the signal every time the focusing lens moved corresponding to the some sufficiently-small extent of image plane movement through an adequate transfer means 14 such as a gear, so that an optical and a mechanical system adapt the control means to various interchangeable lenses.
COPYRIGHT: (C)1982,JPO&Japio
JP5215581A 1981-04-07 1981-04-07 Ttl automatic focusing device of camera Granted JPS57165821A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP5215581A JPS57165821A (en) 1981-04-07 1981-04-07 Ttl automatic focusing device of camera
DE19823213115 DE3213115A1 (en) 1981-04-07 1982-04-07 Camera having an automatic TTL focusing device, and lenses therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5215581A JPS57165821A (en) 1981-04-07 1981-04-07 Ttl automatic focusing device of camera

Publications (2)

Publication Number Publication Date
JPS57165821A true JPS57165821A (en) 1982-10-13
JPH0149921B2 JPH0149921B2 (en) 1989-10-26

Family

ID=12906958

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5215581A Granted JPS57165821A (en) 1981-04-07 1981-04-07 Ttl automatic focusing device of camera

Country Status (2)

Country Link
JP (1) JPS57165821A (en)
DE (1) DE3213115A1 (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57188004A (en) * 1981-05-14 1982-11-18 Olympus Optical Co Ltd Automatic focusing zoom lens
JPS59123822A (en) * 1982-12-29 1984-07-17 Minolta Camera Co Ltd Distance measuring device for lens interchangeable type camera
JPS59142528A (en) * 1983-07-25 1984-08-15 Minolta Camera Co Ltd Automatic focus adjusting device of lens interchangeable type camera
JPS59156208U (en) * 1983-04-05 1984-10-20 京セラ株式会社 Lens movement amount detection device
JPS606929A (en) * 1983-07-25 1985-01-14 Minolta Camera Co Ltd Method and device for automatic focus adjustment
US4509842A (en) * 1983-02-01 1985-04-09 Minolta Camera Kabushiki Kaisha Camera system capable of focus detection through an interchangeable objective lens
US4548488A (en) * 1982-11-19 1985-10-22 Minolta Camera Kabushiki Kaisha Conversion lens assembly for an automatic focusing system in a lens exchangeable camera
JPS61179534U (en) * 1985-04-26 1986-11-08
JPS627013A (en) * 1985-07-03 1987-01-14 Matsushita Electric Ind Co Ltd Automatic focusing device for camera
JPS6219826A (en) * 1985-07-18 1987-01-28 Matsushita Electric Ind Co Ltd Automatic adjusting device for focus of camera
JPS62100718A (en) * 1985-10-28 1987-05-11 Ricoh Co Ltd Automatic focus adjusting device
JPS62119510A (en) * 1985-11-20 1987-05-30 Ricoh Co Ltd Method for adjusting auto-focusing device
JPS6479713A (en) * 1987-09-21 1989-03-24 Fuji Photo Film Co Ltd Automatic focusing device for zoom lens
US5130734A (en) * 1982-12-23 1992-07-14 Minolta Camera Kabushiki Kaisha Data input/output device for a camera
US6208811B1 (en) 1985-10-02 2001-03-27 Canon Kabuhsiki Kaisha Automatic focussing system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4308714A1 (en) * 1993-03-18 1994-09-22 Linhof Praezisions Kamera Werk Coupled rangefinder for photographic cameras

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54104859A (en) * 1978-02-06 1979-08-17 Nippon Chemical Ind Automatic focus detector
JPS54159259A (en) * 1978-06-05 1979-12-15 Honeywell Inc Device for determining distance
JPS5511275A (en) * 1978-04-20 1980-01-26 Polaroid Corp Automatic focusing camera

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54104859A (en) * 1978-02-06 1979-08-17 Nippon Chemical Ind Automatic focus detector
JPS5511275A (en) * 1978-04-20 1980-01-26 Polaroid Corp Automatic focusing camera
JPS54159259A (en) * 1978-06-05 1979-12-15 Honeywell Inc Device for determining distance

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0241721B2 (en) * 1981-05-14 1990-09-19
JPS57188004A (en) * 1981-05-14 1982-11-18 Olympus Optical Co Ltd Automatic focusing zoom lens
US4548488A (en) * 1982-11-19 1985-10-22 Minolta Camera Kabushiki Kaisha Conversion lens assembly for an automatic focusing system in a lens exchangeable camera
US5130734A (en) * 1982-12-23 1992-07-14 Minolta Camera Kabushiki Kaisha Data input/output device for a camera
JPS59123822A (en) * 1982-12-29 1984-07-17 Minolta Camera Co Ltd Distance measuring device for lens interchangeable type camera
US4509842A (en) * 1983-02-01 1985-04-09 Minolta Camera Kabushiki Kaisha Camera system capable of focus detection through an interchangeable objective lens
JPS59156208U (en) * 1983-04-05 1984-10-20 京セラ株式会社 Lens movement amount detection device
JPH0462364B2 (en) * 1983-07-25 1992-10-06 Minolta Camera Kk
JPS606929A (en) * 1983-07-25 1985-01-14 Minolta Camera Co Ltd Method and device for automatic focus adjustment
JPS59142528A (en) * 1983-07-25 1984-08-15 Minolta Camera Co Ltd Automatic focus adjusting device of lens interchangeable type camera
JPH0559413B2 (en) * 1983-07-25 1993-08-31 Minolta Camera Kk
JPS61179534U (en) * 1985-04-26 1986-11-08
JPS627013A (en) * 1985-07-03 1987-01-14 Matsushita Electric Ind Co Ltd Automatic focusing device for camera
JPS6219826A (en) * 1985-07-18 1987-01-28 Matsushita Electric Ind Co Ltd Automatic adjusting device for focus of camera
US6208811B1 (en) 1985-10-02 2001-03-27 Canon Kabuhsiki Kaisha Automatic focussing system
JPS62100718A (en) * 1985-10-28 1987-05-11 Ricoh Co Ltd Automatic focus adjusting device
JPH073500B2 (en) * 1985-10-28 1995-01-18 株式会社リコー Automatic focus adjustment device
JPS62119510A (en) * 1985-11-20 1987-05-30 Ricoh Co Ltd Method for adjusting auto-focusing device
JPH073501B2 (en) * 1985-11-20 1995-01-18 株式会社リコー Adjustment method of automatic focus adjustment device
JPS6479713A (en) * 1987-09-21 1989-03-24 Fuji Photo Film Co Ltd Automatic focusing device for zoom lens

Also Published As

Publication number Publication date
JPH0149921B2 (en) 1989-10-26
DE3213115A1 (en) 1982-11-04

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