FR2426272A1 - METHOD AND DEVICE FOR CARRYING OUT THE AUTOMATIC OR SEMI-AUTOMATIC FOCUSING OF THE IMAGE OF AN OBJECT IN AN IMAGE PLAN - Google Patents

METHOD AND DEVICE FOR CARRYING OUT THE AUTOMATIC OR SEMI-AUTOMATIC FOCUSING OF THE IMAGE OF AN OBJECT IN AN IMAGE PLAN

Info

Publication number
FR2426272A1
FR2426272A1 FR7912431A FR7912431A FR2426272A1 FR 2426272 A1 FR2426272 A1 FR 2426272A1 FR 7912431 A FR7912431 A FR 7912431A FR 7912431 A FR7912431 A FR 7912431A FR 2426272 A1 FR2426272 A1 FR 2426272A1
Authority
FR
France
Prior art keywords
image
automatic
semi
carrying
ctd
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
FR7912431A
Other languages
French (fr)
Other versions
FR2426272B1 (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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of FR2426272A1 publication Critical patent/FR2426272A1/en
Application granted granted Critical
Publication of FR2426272B1 publication Critical patent/FR2426272B1/en
Expired 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
    • G02B7/343—Systems for automatic generation of focusing signals using different areas in a pupil plane using light beam separating prisms
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Studio Devices (AREA)
  • Measurement Of Optical Distance (AREA)

Abstract

L'invention concerne un procédé et un dispositif pour réaliser la mise au point automatique ou semi-automatique de l'image d'un objet dans un plan image. Dans un montage pour la mise en oeuvre du procédé, une partie de l'image à régler est projetée à l'aide de réseaux de microprismes sur des détecteurs d'image à transfert de charge CTD 1, CTD 2, lus à la même fréquence fA et dont les signaux de sortie sont envoyés à un amplificateur différentiel 4 dont la sortie envoie un signal passant dans un intégrateur 5 et destiné à un dispositif d'affichage ou de réglage. Application notamment aux appareils de prise de vues à viseurs reflex.The invention relates to a method and a device for achieving automatic or semi-automatic focusing of the image of an object in an image plane. In an assembly for implementing the method, part of the image to be adjusted is projected using microprism arrays onto charge transfer image detectors CTD 1, CTD 2, read at the same frequency fA and whose output signals are sent to a differential amplifier 4, the output of which sends a signal passing through an integrator 5 and intended for a display or adjustment device. Application in particular to cameras with reflex sights.

FR7912431A 1978-05-18 1979-05-16 METHOD AND DEVICE FOR PERFORMING THE AUTOMATIC OR SEMI-AUTOMATIC FOCUSING OF THE IMAGE OF AN OBJECT IN AN IMAGE PLANE Expired FR2426272B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782821722 DE2821722C2 (en) 1978-05-18 1978-05-18 Device for automatic or semi-automatic focusing of the image of an object on an image plane

Publications (2)

Publication Number Publication Date
FR2426272A1 true FR2426272A1 (en) 1979-12-14
FR2426272B1 FR2426272B1 (en) 1985-12-27

Family

ID=6039644

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7912431A Expired FR2426272B1 (en) 1978-05-18 1979-05-16 METHOD AND DEVICE FOR PERFORMING THE AUTOMATIC OR SEMI-AUTOMATIC FOCUSING OF THE IMAGE OF AN OBJECT IN AN IMAGE PLANE

Country Status (4)

Country Link
JP (1) JPS54153029A (en)
DE (1) DE2821722C2 (en)
FR (1) FR2426272B1 (en)
GB (1) GB2021894B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4414470A (en) * 1979-02-08 1983-11-08 Ricoh Company, Ltd. Pupil divisional focusing position detection apparatus using lenticula lens
DE3004147C2 (en) * 1979-02-09 1983-06-23 Asahi Kogaku Kogyo K.K., Tokyo Focus detection device for a camera
JPS5788415A (en) * 1980-11-21 1982-06-02 Mamiya Koki Kk Automatic focusing control device
GB2195214B (en) * 1980-12-10 1988-10-26 Emi Ltd Automatic focussing system for an optical system
JPS5843409A (en) * 1981-09-10 1983-03-14 Asahi Optical Co Ltd Detection of focusing position
JPS5933409A (en) * 1982-08-19 1984-02-23 Olympus Optical Co Ltd Focusing detector
DD217621A1 (en) * 1983-07-20 1985-01-16 Univ Schiller Jena DEVICE FOR THE FOTOMETRIC STRUCTURE ORDER IDENTIFICATION WITH A PHOTO MEMPARATOR ARRAY

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1396712A (en) * 1971-11-15 1975-06-04 Leitz Ernst Gmbh Image testing device
US4083056A (en) * 1975-09-09 1978-04-04 Asahi Kogaku Kogyo Kabushiki Kaisha Focus detecting device for single-lens reflex cameras
DE2811817A1 (en) * 1977-03-18 1978-09-21 Asahi Optical Co Ltd DEVICE FOR FOCUSING OPTICAL SYSTEMS, IN PARTICULAR THE LENS OF A PHOTOGRAPHIC CAMERA

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4840089A (en) * 1971-09-26 1973-06-12
DE2156617C3 (en) * 1971-11-15 1980-08-21 Ernst Leitz Wetzlar Gmbh, 6330 Wetzlar Device for determining the position of the plane of maximum amplitude of a spatial frequency, for example in the case of a range finder
JPS52110032A (en) * 1976-03-12 1977-09-14 Canon Inc Detector for focusing
JPS5914723B2 (en) * 1976-05-22 1984-04-05 旭光学工業株式会社 Focus detection device for single-lens reflex camera
JPS5593325A (en) * 1979-01-09 1980-07-15 Sharp Corp Precharge circuit of mos transistor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1396712A (en) * 1971-11-15 1975-06-04 Leitz Ernst Gmbh Image testing device
US4083056A (en) * 1975-09-09 1978-04-04 Asahi Kogaku Kogyo Kabushiki Kaisha Focus detecting device for single-lens reflex cameras
DE2811817A1 (en) * 1977-03-18 1978-09-21 Asahi Optical Co Ltd DEVICE FOR FOCUSING OPTICAL SYSTEMS, IN PARTICULAR THE LENS OF A PHOTOGRAPHIC CAMERA

Also Published As

Publication number Publication date
JPS54153029A (en) 1979-12-01
GB2021894B (en) 1982-10-27
GB2021894A (en) 1979-12-05
FR2426272B1 (en) 1985-12-27
DE2821722C2 (en) 1981-09-17
DE2821722A1 (en) 1979-11-22

Similar Documents

Publication Publication Date Title
FR2423800A1 (en) FOCUS CONTROL SYSTEM FOR INTERCHANGEABLE LENSES WITH ADJUSTABLE FOCUS
FR2360150A1 (en) AUTOMATIC FOCUSING DEVICE
FR2426272A1 (en) METHOD AND DEVICE FOR CARRYING OUT THE AUTOMATIC OR SEMI-AUTOMATIC FOCUSING OF THE IMAGE OF AN OBJECT IN AN IMAGE PLAN
GB1392198A (en) Range finder including photo electric devices
FR2438856A1 (en) METHOD FOR RECORDING A RADIATION IMAGE
FR2457506A1 (en) DEVICE AND METHOD FOR RECORDING AN IMAGE WITH REDUCED CONTRAST
FR2443105A1 (en) APPARATUS FOR DETERMINING THE POSITION OF A SELECTED POINT ON A GRID
FR2445973A1 (en) CINEMATOGRAPHIC CAMERA WITH IMPROVED AUTOMATIC FOCUSING
FR2393337A1 (en) AUTOMATIC FOCUSING DEVICE FOR PHOTOGRAPHIC AND CINEMATOGRAPHIC DEVICES
ES2060648T3 (en) IMPROVED OPTICAL INTERFACE FOR A MAGNETO-OPTICAL CURRENT TRANSDUCER.
FR2390749A1 (en) FOCUSING APPARATUS OF AN INFORMATION READING ASSEMBLY
FR2421398A1 (en) DEVICE FOR FOCUSING THE IMAGE OF AN OBJECT ON A IMAGE PLANE
FR2423025A1 (en) OPTO-ELECTRONIC FOCUS FAULT DETECTION SYSTEM
FR2434403A1 (en) FOCUSING DETECTION DEVICE
FR2373775A1 (en) METHOD AND DEVICE FOR DIAPHRAGMING PARASITIC RADIATION IN A DEVICE FOR OPTICAL GUIDANCE OF MISSILES
FR2551383B1 (en) METHOD AND DEVICE FOR SURFACING AN OPTICAL LENS WITH A SURFACE (S) OF REVOLUTION
FR2370992A1 (en) FOCUSING DEVICE
FR2415317A1 (en) FOCUSING DEVICE FOR A PHOTOGRAPHIC OR CINEMATOGRAPHIC CAMERA
FR2442460A1 (en) OPTICAL MODULATION DEVICE
FR2450486A1 (en) METHOD AND SYSTEMS FOR ELECTRONIC GENERATION OF WIDE ANGLE MOVED IMAGE FOR VESSEL DRIVING ASSEMBLY
FR2421399A1 (en) DEVICE FOR PRECISE ADJUSTING THE IMAGE OF AN OBJECT IN A IMAGE PLAN
CH493857A (en) Method for concentrating a stream of rays between an image formed by a converging optical system and a zone of a sensitive element of a receiver, and concentrating optical device for implementing this method
FR2547917B1 (en) METHOD FOR PROCESSING THE OUTPUT SIGNAL OF AN OPTICAL SENSOR OF LAND HORIZONS OF A GEOSTATIONARY SATELLITE
FR2402222A1 (en) METHOD OF DETECTION OF THE FOCUS OF AN OPTICAL DEVICE
FR2426245A1 (en) ULTRASONIC MEASUREMENT DEVICE

Legal Events

Date Code Title Description
ST Notification of lapse