JPS5752010A - Automatic focus adjustment device - Google Patents

Automatic focus adjustment device

Info

Publication number
JPS5752010A
JPS5752010A JP11127981A JP11127981A JPS5752010A JP S5752010 A JPS5752010 A JP S5752010A JP 11127981 A JP11127981 A JP 11127981A JP 11127981 A JP11127981 A JP 11127981A JP S5752010 A JPS5752010 A JP S5752010A
Authority
JP
Japan
Prior art keywords
motor
toothed rack
scanning terminal
focusing
gear
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
JP11127981A
Other languages
Japanese (ja)
Other versions
JPS6357763B2 (en
Inventor
Tatsuya Taguchi
Akio Sunochi
Soichi Nakamoto
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP11127981A priority Critical patent/JPS5752010A/en
Publication of JPS5752010A publication Critical patent/JPS5752010A/en
Publication of JPS6357763B2 publication Critical patent/JPS6357763B2/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)

Abstract

PURPOSE:To prolong the life of a power source by reducing the loss of electric power by storing the reflected light of luminous flux emitted toward an object and by starting the focusing operation of a focusing lens after the storage. CONSTITUTION:A scanning terminal 19 is fitted to a toothed rack engaging with a pinion 13a provided to a lever 13, and this toothed rack 32 is driven by a motor through a gear 36. One of photodetectors detectes a light beam and after this detection is stored in a storing circuit 20 instantaneously, a control switch 24 is closed to connect the motor to a power soirce. Consequently, when the motor drives the gear 36 to turn, the toothed rack 32 also turns clockwise and while the scanning terminal 19 slides on contacts T1-Tn successively, the focus lever 12 is so operated that a photographic lens 2 comes out. When the scanning terminal 19 selects the photodetector receiving the reflected light, the motor is stopped to complete the focusing of the photographic lens 2.
JP11127981A 1981-07-16 1981-07-16 Automatic focus adjustment device Granted JPS5752010A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11127981A JPS5752010A (en) 1981-07-16 1981-07-16 Automatic focus adjustment device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11127981A JPS5752010A (en) 1981-07-16 1981-07-16 Automatic focus adjustment device

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP9220281A Division JPS5752008A (en) 1981-06-17 1981-06-17 Distance detector

Publications (2)

Publication Number Publication Date
JPS5752010A true JPS5752010A (en) 1982-03-27
JPS6357763B2 JPS6357763B2 (en) 1988-11-14

Family

ID=14557192

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11127981A Granted JPS5752010A (en) 1981-07-16 1981-07-16 Automatic focus adjustment device

Country Status (1)

Country Link
JP (1) JPS5752010A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6090317A (en) * 1984-06-04 1985-05-21 Canon Inc Focusing detecting device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6090317A (en) * 1984-06-04 1985-05-21 Canon Inc Focusing detecting device

Also Published As

Publication number Publication date
JPS6357763B2 (en) 1988-11-14

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