FR2371699A1 - Systeme automatique de mise au point de lentille - Google Patents

Systeme automatique de mise au point de lentille

Info

Publication number
FR2371699A1
FR2371699A1 FR7734679A FR7734679A FR2371699A1 FR 2371699 A1 FR2371699 A1 FR 2371699A1 FR 7734679 A FR7734679 A FR 7734679A FR 7734679 A FR7734679 A FR 7734679A FR 2371699 A1 FR2371699 A1 FR 2371699A1
Authority
FR
France
Prior art keywords
lens focusing
signal
lens
focusing system
automatic lens
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.)
Withdrawn
Application number
FR7734679A
Other languages
English (en)
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.)
Honeywell Inc
Original Assignee
Honeywell 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 Honeywell Inc filed Critical Honeywell Inc
Publication of FR2371699A1 publication Critical patent/FR2371699A1/fr
Withdrawn legal-status Critical Current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
    • G02B7/30—Systems for automatic generation of focusing signals using parallactic triangle with a base line
    • G02B7/305—Systems for automatic generation of focusing signals using parallactic triangle with a base line using a scanner

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)

Abstract

L'invention concerne un système automatique de mise au point de lentille. Ce système est caractérisé en ce qu'il comprend un détecteur de portée agissant de façon à fournir un signal comportant un premier et un second état, le dernier changement du premier au second état représentant une condition de mise au point de la lentille, un mécanisme d'entraînement pour modifier la position de la lentille et un circuit de commande comportant un moyen pour créer une période morte déterminée par la position de la lentille, un moyen pour fournir un signal de << correction de mise au point nécessaire >> et un moyen pour fournir un signal de << sens de correction de mise au point >>. Application à la mise au point de lentilles.
FR7734679A 1976-11-19 1977-11-18 Systeme automatique de mise au point de lentille Withdrawn FR2371699A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/743,189 US4078172A (en) 1976-11-19 1976-11-19 Continuous automatic focus system

Publications (1)

Publication Number Publication Date
FR2371699A1 true FR2371699A1 (fr) 1978-06-16

Family

ID=24987838

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7734679A Withdrawn FR2371699A1 (fr) 1976-11-19 1977-11-18 Systeme automatique de mise au point de lentille

Country Status (6)

Country Link
US (1) US4078172A (fr)
JP (1) JPS5367424A (fr)
CA (1) CA1100797A (fr)
DE (1) DE2751366A1 (fr)
FR (1) FR2371699A1 (fr)
GB (1) GB1582049A (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5372618A (en) * 1976-12-10 1978-06-28 Bell & Howell Japan Composite control device for camera
US4160904A (en) * 1977-09-19 1979-07-10 Honeywell Inc. Digital continuous focus proportional controller
US4186300A (en) * 1977-11-30 1980-01-29 Sankyo Kogaku Kogyo Kabushiki Kaisha Focus detector
US4247762A (en) * 1978-11-30 1981-01-27 Honeywell Inc. Contrast sensing apparatus for automatic focus systems
US4254330A (en) * 1979-09-13 1981-03-03 Honeywell Inc. Low frequency enhancement range finding equipment
JPS61114230A (ja) * 1984-11-09 1986-05-31 Konishiroku Photo Ind Co Ltd 自動焦点カメラ
SE518050C2 (sv) 2000-12-22 2002-08-20 Afsenius Sven Aake Kamera som kombinerar skarpt fokuserade delar från olika exponeringar till en slutbild

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3211831A (en) * 1963-05-31 1965-10-12 Goodyear Aerospace Corp Automatic focus control system and method
US3958117A (en) * 1975-07-15 1976-05-18 Honeywell Inc. Distance determining and automatic focusing apparatus

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2156617C3 (de) * 1971-11-15 1980-08-21 Ernst Leitz Wetzlar Gmbh, 6330 Wetzlar Einrichtung zur Bestimmung der Lage der Ebene maximaler Amplitude einer Ortsfrequenz, beispielsweise bei einem Entfernungsmesser
US4031383A (en) * 1973-10-19 1977-06-21 Canon Kabushiki Kaisha Method for detecting visibility of image of an object and a device therefor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3211831A (en) * 1963-05-31 1965-10-12 Goodyear Aerospace Corp Automatic focus control system and method
US3958117A (en) * 1975-07-15 1976-05-18 Honeywell Inc. Distance determining and automatic focusing apparatus

Also Published As

Publication number Publication date
US4078172A (en) 1978-03-07
GB1582049A (en) 1980-12-31
DE2751366A1 (de) 1978-05-24
CA1100797A (fr) 1981-05-12
JPS5367424A (en) 1978-06-15

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Legal Events

Date Code Title Description
ST Notification of lapse