GB2070263B - Automatic focusing - Google Patents

Automatic focusing

Info

Publication number
GB2070263B
GB2070263B GB8103158A GB8103158A GB2070263B GB 2070263 B GB2070263 B GB 2070263B GB 8103158 A GB8103158 A GB 8103158A GB 8103158 A GB8103158 A GB 8103158A GB 2070263 B GB2070263 B GB 2070263B
Authority
GB
United Kingdom
Prior art keywords
automatic focusing
focusing
automatic
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.)
Expired
Application number
GB8103158A
Other languages
English (en)
Other versions
GB2070263A (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.)
Dainippon Screen Manufacturing Co Ltd
Original Assignee
Dainippon Screen Manufacturing 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 Dainippon Screen Manufacturing Co Ltd filed Critical Dainippon Screen Manufacturing Co Ltd
Publication of GB2070263A publication Critical patent/GB2070263A/en
Application granted granted Critical
Publication of GB2070263B publication Critical patent/GB2070263B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00—Photographic printing apparatus
    • G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
    • G03B27/34—Means for automatic focusing therefor

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Variable Magnification In Projection-Type Copying Machines (AREA)
  • Automatic Focus Adjustment (AREA)
  • Projection Apparatus (AREA)
  • Control Of Position Or Direction (AREA)
GB8103158A 1980-02-25 1981-02-02 Automatic focusing Expired GB2070263B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55021590A JPS6029099B2 (ja) 1980-02-25 1980-02-25 投影装置の常焦点投影倍率変更方法及びその装置

Publications (2)

Publication Number Publication Date
GB2070263A GB2070263A (en) 1981-09-03
GB2070263B true GB2070263B (en) 1983-08-17

Family

ID=12059246

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8103158A Expired GB2070263B (en) 1980-02-25 1981-02-02 Automatic focusing

Country Status (5)

Country Link
US (1) US4488804A (enExample)
JP (1) JPS6029099B2 (enExample)
DE (1) DE3107075C2 (enExample)
FR (1) FR2476864A1 (enExample)
GB (1) GB2070263B (enExample)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4505581A (en) * 1982-04-28 1985-03-19 Xerox Corporation Registration system for a photocopier
GB2119530B (en) * 1982-04-28 1985-10-30 Xerox Corp Variable magnification photocopying
JPS5950433A (ja) * 1982-09-16 1984-03-23 Minolta Camera Co Ltd 引伸機の自動焦点調節装置
CH662662A5 (de) * 1983-08-25 1987-10-15 Philippe Vogt Fachkamera.
JPH0610720B2 (ja) * 1983-10-12 1994-02-09 大日本スクリーン製造株式会社 写真撮影装置及び露光条件測定方法
CH666756A5 (de) * 1983-10-13 1988-08-15 Sinar Ag Schaffhausen Einrichtung fuer eine photographische kamera mit in bezug aufeinander verstellbaren objektiv- und bildtraegern.
DE3339960A1 (de) * 1983-11-04 1985-05-15 Agfa-Gevaert Ag, 5090 Leverkusen Fotografisches kopiergeraet
JPH0658500B2 (ja) * 1984-09-05 1994-08-03 シャープ株式会社 レンズ停止位置制御方法
CH665035A5 (de) * 1984-10-10 1988-04-15 Philippe Vogt Grossbildkamera.
US5774749A (en) * 1985-05-14 1998-06-30 Canon Kabushiki Kaisha Camera having a magnification change-over device
DE8530144U1 (de) * 1985-10-24 1987-12-23 Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel Optoelektronischer Abtastkopf
IT1201628B (it) * 1986-08-29 1989-02-02 Durst Phototechnik Srl Procedimento e dispositivo per la messa a fuoco automatica in un ingranditore o riproduttore fotografico ad ingrandimento variabile
JPH07122690B2 (ja) * 1987-04-01 1995-12-25 株式会社エルモ社 接写装置
JP2525844B2 (ja) * 1988-01-27 1996-08-21 富士写真フイルム株式会社 写真引伸機のフオ―カス位置補正方法
US4937620A (en) * 1988-02-05 1990-06-26 Fuji Photo Film Co., Ltd. Method of focusing printer
JPH0766149B2 (ja) * 1988-02-05 1995-07-19 富士写真フイルム株式会社 プリンタのオートフオーカス機構
US5091745A (en) * 1990-11-27 1992-02-25 A.B. Dick Company Full range platemaker optical system
JPH07104388A (ja) * 1993-09-24 1995-04-21 Samsung Aerospace Ind Ltd プリンター
US5631776A (en) * 1995-12-21 1997-05-20 Eastman Kodak Company Zoom lens apparatus and bearing block assembly
DE19823906C2 (de) 1998-05-28 2001-06-28 Gretag Imaging Ag Filmmaterial-Leitanlage

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE702308C (de) * 1938-06-12 1941-02-04 Drukkerij De Spaarnestad Haarl Photographisches Vergroesserungsgeraet mit zwanglaeufiger Scharfeinstellung
US2655834A (en) * 1952-08-27 1953-10-20 John T Pennington Reflecting projector with automatic focus mechanism
FR1150514A (fr) * 1956-05-09 1958-01-15 Bouzard & Fils Perfectionnements aux appareils de reproduction pour la photographie et applicationsanalogues
GB1207122A (en) * 1966-09-29 1970-09-30 Sidney R Littlejohn Company Lt Photocopying apparatus
DE2136163A1 (de) * 1970-07-21 1972-02-10 Sidney R Littlejohn & Co Ltd , London Vorrichtung zur Steuerung der Positionierung eines Objektes und einer Linsenanordnung in einem Kamerasystem
DE2225416A1 (de) * 1972-05-25 1973-12-06 Boeger Duplomat Apparate Kg Dr Verfahren zur einstellung einer reprokamera
NL7408750A (nl) * 1974-06-28 1975-12-30 Oce Van Der Grinten Nv Reproduktiecamera.
FR2320571A1 (fr) * 1975-08-07 1977-03-04 Controle Automation Perfectionnements apportes aux appareils de reproduction photographique a rapport image/objet reglable
JPS5397418A (en) * 1977-02-07 1978-08-25 Dainippon Screen Mfg Method of copying machine camera*s automatic focusing and its equipment
DE2751872C2 (de) * 1977-11-21 1982-01-14 Dr. Böger Duplomat Apparate KG (GmbH & Co), 2000 Wedel Reprokamera
DE2842479C2 (de) * 1978-09-29 1982-05-27 Meteor-Siegen Apparatebau Paul Schmeck Gmbh, 5900 Siegen Reprografische Kamera

Also Published As

Publication number Publication date
US4488804A (en) 1984-12-18
FR2476864A1 (fr) 1981-08-28
DE3107075A1 (de) 1982-01-28
JPS56119124A (en) 1981-09-18
GB2070263A (en) 1981-09-03
JPS6029099B2 (ja) 1985-07-09
FR2476864B1 (enExample) 1984-03-09
DE3107075C2 (de) 1987-05-07

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19940202