FR2440006A1 - Dispositif detecteur de position focalisee d'un instrument optique - Google Patents

Dispositif detecteur de position focalisee d'un instrument optique

Info

Publication number
FR2440006A1
FR2440006A1 FR7926246A FR7926246A FR2440006A1 FR 2440006 A1 FR2440006 A1 FR 2440006A1 FR 7926246 A FR7926246 A FR 7926246A FR 7926246 A FR7926246 A FR 7926246A FR 2440006 A1 FR2440006 A1 FR 2440006A1
Authority
FR
France
Prior art keywords
image
optical instrument
focused position
photoelectric
elements
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
FR7926246A
Other languages
English (en)
Other versions
FR2440006B1 (fr
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.)
Olympus Corp
Original Assignee
Olympus Optical Co Ltd
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 Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Publication of FR2440006A1 publication Critical patent/FR2440006A1/fr
Application granted granted Critical
Publication of FR2440006B1 publication Critical patent/FR2440006B1/fr
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
    • G02B7/38—Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals measured at different points on the optical axis, e.g. focussing on two or more planes and comparing image data

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)

Abstract

L'INVENTION CONCERNE UN DISPOSITIF DETECTEUR DE POSITION FOCALISEE POUR UN INSTRUMENT OPTIQUE, TEL QU'UN APPAREIL DE PRISE DE VUE PHOTOGRAPHIQUE. L'IMAGE DE L'OBJET A PHOTOGRAPHIER EST PROJETEE SUR DES BATTERIES 8 ET 9 D'ELEMENTS PHOTO-ACCEPTEURS CONSTITUES PAR DES ELEMENTS PHOTOELECTRIQUES QUI PRODUIRONT DES SIGNAUX PHOTOELECTRIQUES CONFORMES A LA REPARTITION DE L'INTENSITE LUMINEUSE DE L'IMAGE. CES SIGNAUX PHOTOELECTRIQUES SONT CONVERTIS EN EQUIVALENTS NUMERIQUES ET UNE GRANDEUR ABSOLUE D'UNE DIFFERENCE ENTRE SIGNAUX NUMERIQUES D'ELEMENTS ADJACENTS EST CALCULEE. CES GRANDEURS ABSOLUES SONT DISPOSEES SELON LEUR ORDRE DE GRANDEUR ET UN NOMBRE DONNE D'ENTRE ELLES EST ACCUMULE, EN PARTANT DE LA PLUS GRANDE. LA VALEUR ACCUMULEE EST UTILISEE COMME VALEUR D'UNE FONCTION D'EVALUATION INDIQUANT LA NETTETE DE L'IMAGE.
FR7926246A 1978-10-24 1979-10-23 Dispositif detecteur de position focalisee d'un instrument optique Granted FR2440006A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13062078A JPS5557809A (en) 1978-10-24 1978-10-24 Focusing detection system

Publications (2)

Publication Number Publication Date
FR2440006A1 true FR2440006A1 (fr) 1980-05-23
FR2440006B1 FR2440006B1 (fr) 1982-10-29

Family

ID=15038576

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7926246A Granted FR2440006A1 (fr) 1978-10-24 1979-10-23 Dispositif detecteur de position focalisee d'un instrument optique

Country Status (5)

Country Link
US (1) US4314151A (fr)
JP (1) JPS5557809A (fr)
DE (1) DE2942794C2 (fr)
FR (1) FR2440006A1 (fr)
GB (1) GB2038586B (fr)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5650315A (en) * 1979-10-01 1981-05-07 Canon Inc Focus detecting method and device
JPS5697325A (en) * 1979-12-29 1981-08-06 Asahi Optical Co Ltd Focus detecting method of camera
DE3131053C2 (de) * 1980-08-07 1983-12-29 Asahi Kogaku Kogyo K.K., Tokyo Automatische Fokussierungsermittlungseinrichtung für eine Kamera
JPS5788417A (en) * 1980-11-21 1982-06-02 Hitachi Denshi Ltd Automatic focusing system
EP0054349A3 (fr) * 1980-12-10 1983-03-16 EMI Limited Système optique à mise au point automatique
JPS57158819A (en) * 1981-03-27 1982-09-30 Olympus Optical Co Ltd Method for focusing detection
JPS57158820A (en) * 1981-03-27 1982-09-30 Olympus Optical Co Ltd Method for focusing detection
JPS58106515A (ja) * 1981-12-21 1983-06-24 Olympus Optical Co Ltd 内視鏡
US4465940A (en) * 1982-04-15 1984-08-14 The United States Of America As Represented By The Secretary Of The Air Force Electro-optical target detection
JPS58211721A (ja) * 1982-06-04 1983-12-09 Olympus Optical Co Ltd 合焦検出方法
US4481413A (en) * 1982-06-30 1984-11-06 Honeywell Inc. Strip mirror radiation splitter for range determination systems
GB2129642B (en) * 1982-11-05 1986-09-10 British Library Board Focus detection
GB2152780B (en) * 1983-11-15 1987-06-03 Gec Avionics Distance measurement
EP0163394B1 (fr) * 1984-04-16 1991-10-09 Image Recognition Systems, Ltd. Dispositif de focalisation automatique
DE3510066C1 (de) * 1985-03-20 1986-05-07 Will Wetzlar Gmbh, 6330 Wetzlar Verfahren zur Fokussierung eines optischen Abbildungssystems sowie Einrichtung zur Durchfuehrung des Verfahrens
US4752831A (en) * 1986-05-20 1988-06-21 Polaroid Corporation Focusing system for camera apparatus
JP2002287017A (ja) * 2001-03-28 2002-10-03 Fuji Photo Optical Co Ltd 撮影レンズのピント状態検出装置
CN102483802B (zh) * 2009-06-01 2014-12-31 生物辐射实验室股份有限公司 用于生物/化学样本的成像设备的校准
DE102009045107A1 (de) 2009-09-29 2011-03-31 Carl Zeiss Imaging Solutions Gmbh Automatisches Fokussierverfahren für ein optisches Instrument zum vergrößerten Betrachten eines Objektes

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2549905A1 (de) * 1974-11-07 1976-05-13 Asahi Optical Co Ltd Vorrichtung zur scharfeinstellung eines objektivs
DE2551070A1 (de) * 1974-11-13 1976-05-26 Canon Kk Verfahren zur ermittlung der schaerfe einer objekt-abbildung
US3967056A (en) * 1973-02-26 1976-06-29 Minolta Camera Kabushiki Kaisha Automatic focusing apparatus
US4047187A (en) * 1974-04-01 1977-09-06 Canon Kabushiki Kaisha System for exposure measurement and/or focus detection by means of image senser

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50129220A (fr) * 1974-04-01 1975-10-13
US4083056A (en) * 1975-09-09 1978-04-04 Asahi Kogaku Kogyo Kabushiki Kaisha Focus detecting device for single-lens reflex cameras
JPS5914723B2 (ja) * 1976-05-22 1984-04-05 旭光学工業株式会社 一眼レフカメラの焦点検出装置
FR2386832A1 (fr) * 1977-04-05 1978-11-03 Commissariat Energie Atomique Procede de correction automatique de mise au point d'un microscope et un dispositif mettant en oeuvre ledit procede
JPS5413330A (en) * 1977-07-01 1979-01-31 Olympus Optical Co Ltd Automatic focus adjusting system
US4265520A (en) * 1977-11-28 1981-05-05 Asahi Kogaku Kogyo Kabushiki Kaisha Focus detecting device in single lens reflex camera

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3967056A (en) * 1973-02-26 1976-06-29 Minolta Camera Kabushiki Kaisha Automatic focusing apparatus
US4047187A (en) * 1974-04-01 1977-09-06 Canon Kabushiki Kaisha System for exposure measurement and/or focus detection by means of image senser
DE2549905A1 (de) * 1974-11-07 1976-05-13 Asahi Optical Co Ltd Vorrichtung zur scharfeinstellung eines objektivs
DE2551070A1 (de) * 1974-11-13 1976-05-26 Canon Kk Verfahren zur ermittlung der schaerfe einer objekt-abbildung

Also Published As

Publication number Publication date
JPS6355043B2 (fr) 1988-11-01
GB2038586B (en) 1983-08-17
DE2942794C2 (de) 1983-11-10
JPS5557809A (en) 1980-04-30
FR2440006B1 (fr) 1982-10-29
GB2038586A (en) 1980-07-23
DE2942794A1 (de) 1980-04-30
US4314151A (en) 1982-02-02

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Legal Events

Date Code Title Description
ST Notification of lapse