IT1201628B - Procedimento e dispositivo per la messa a fuoco automatica in un ingranditore o riproduttore fotografico ad ingrandimento variabile - Google Patents

Procedimento e dispositivo per la messa a fuoco automatica in un ingranditore o riproduttore fotografico ad ingrandimento variabile

Info

Publication number
IT1201628B
IT1201628B IT04840/86A IT484086A IT1201628B IT 1201628 B IT1201628 B IT 1201628B IT 04840/86 A IT04840/86 A IT 04840/86A IT 484086 A IT484086 A IT 484086A IT 1201628 B IT1201628 B IT 1201628B
Authority
IT
Italy
Prior art keywords
magnifyer
procedure
variable magnification
automatic focusing
focus
Prior art date
Application number
IT04840/86A
Other languages
English (en)
Other versions
IT8604840A0 (it
Inventor
Verner Delueg
Original Assignee
Durst Phototechnik Srl
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 Durst Phototechnik Srl filed Critical Durst Phototechnik Srl
Priority to IT04840/86A priority Critical patent/IT1201628B/it
Publication of IT8604840A0 publication Critical patent/IT8604840A0/it
Priority to EP87112142A priority patent/EP0261407B1/de
Priority to AT87112142T priority patent/ATE89675T1/de
Priority to DE8787112142T priority patent/DE3785902D1/de
Priority to US07/088,893 priority patent/US4806988A/en
Priority to JP62211516A priority patent/JP2664688B2/ja
Application granted granted Critical
Publication of IT1201628B publication Critical patent/IT1201628B/it

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)
  • Focusing (AREA)
  • Eye Examination Apparatus (AREA)
  • Projection-Type Copiers In General (AREA)
IT04840/86A 1986-08-29 1986-08-29 Procedimento e dispositivo per la messa a fuoco automatica in un ingranditore o riproduttore fotografico ad ingrandimento variabile IT1201628B (it)

Priority Applications (6)

Application Number Priority Date Filing Date Title
IT04840/86A IT1201628B (it) 1986-08-29 1986-08-29 Procedimento e dispositivo per la messa a fuoco automatica in un ingranditore o riproduttore fotografico ad ingrandimento variabile
EP87112142A EP0261407B1 (de) 1986-08-29 1987-08-21 Verfahren und Vorrichtung zum automatischen Scharfstellen in einem fotografischen Vergrösserungs- oder Kopiergerät mit veränderlichem Vergrösserungsmassstab
AT87112142T ATE89675T1 (de) 1986-08-29 1987-08-21 Verfahren und vorrichtung zum automatischen scharfstellen in einem fotografischen vergroesserungs- oder kopiergeraet mit veraenderlichem vergroesserungsmassstab.
DE8787112142T DE3785902D1 (de) 1986-08-29 1987-08-21 Verfahren und vorrichtung zum automatischen scharfstellen in einem fotografischen vergroesserungs- oder kopiergeraet mit veraenderlichem vergroesserungsmassstab.
US07/088,893 US4806988A (en) 1986-08-29 1987-08-24 Process and an arrangement for the automatic focusing in a photographic enlarging or copying apparatus with a variable enlarging scale
JP62211516A JP2664688B2 (ja) 1986-08-29 1987-08-27 倍率を可変できる写真引伸機または複写機の自動焦点合わせ方法およびその装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT04840/86A IT1201628B (it) 1986-08-29 1986-08-29 Procedimento e dispositivo per la messa a fuoco automatica in un ingranditore o riproduttore fotografico ad ingrandimento variabile

Publications (2)

Publication Number Publication Date
IT8604840A0 IT8604840A0 (it) 1986-08-29
IT1201628B true IT1201628B (it) 1989-02-02

Family

ID=11114786

Family Applications (1)

Application Number Title Priority Date Filing Date
IT04840/86A IT1201628B (it) 1986-08-29 1986-08-29 Procedimento e dispositivo per la messa a fuoco automatica in un ingranditore o riproduttore fotografico ad ingrandimento variabile

Country Status (6)

Country Link
US (1) US4806988A (it)
EP (1) EP0261407B1 (it)
JP (1) JP2664688B2 (it)
AT (1) ATE89675T1 (it)
DE (1) DE3785902D1 (it)
IT (1) IT1201628B (it)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0766148B2 (ja) * 1987-07-10 1995-07-19 富士写真フイルム株式会社 プリンタのピント合わせ方法
US4937620A (en) * 1988-02-05 1990-06-26 Fuji Photo Film Co., Ltd. Method of focusing printer
DE3912737C2 (de) * 1989-04-19 2001-06-28 Truetzschler Gmbh & Co Kg Vorrichtung zum Sichern für die öffenbaren Teile von Schutzabdeckungen bei Textilmaschinen, insbesondere Spinnereivorbereitungsmaschinen
JPH03196034A (ja) * 1989-12-26 1991-08-27 Minolta Camera Co Ltd ズームレンズの自動倍率設定装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1772304A1 (de) * 1968-03-07 1971-03-04 Durst Ag Vorrichtung zum automatischen Scharfeinstellen eines auf eine Projektionsebene mittels eines Objektivs abzubildenden Bildes einer in einem Vorlagefenster anzuordnenden Vorlage
DE2225416A1 (de) * 1972-05-25 1973-12-06 Boeger Duplomat Apparate Kg Dr Verfahren zur einstellung einer reprokamera
JPS5397418A (en) * 1977-02-07 1978-08-25 Dainippon Screen Mfg Method of copying machine camera*s automatic focusing and its equipment
US4281927A (en) * 1979-08-27 1981-08-04 Louis Dzuban Apparatus for indicating maximum resolution for projected images
JPS6029099B2 (ja) * 1980-02-25 1985-07-09 大日本スクリ−ン製造株式会社 投影装置の常焦点投影倍率変更方法及びその装置
JPS6029100B2 (ja) * 1980-08-27 1985-07-09 富士写真フイルム株式会社 写真装置におけるイ−ゼルとレンズの初期位置検出方法
CH658325A5 (de) * 1982-01-21 1986-10-31 Rudolf Boehme Vergroesserungsgeraet mit stetiger scharfeinstellung bei veraenderung der bildgroesse durch ein, ueber eine brueckenschaltung und einen verstaerker, gesteuertes objektiv.
JPS5950433A (ja) * 1982-09-16 1984-03-23 Minolta Camera Co Ltd 引伸機の自動焦点調節装置
DE3339960A1 (de) * 1983-11-04 1985-05-15 Agfa-Gevaert Ag, 5090 Leverkusen Fotografisches kopiergeraet
DE3339991A1 (de) * 1983-11-04 1985-05-15 Agfa-Gevaert Ag, 5090 Leverkusen Fotografisches rollenkopiergeraet

Also Published As

Publication number Publication date
EP0261407B1 (de) 1993-05-19
ATE89675T1 (de) 1993-06-15
DE3785902D1 (de) 1993-06-24
JP2664688B2 (ja) 1997-10-15
IT8604840A0 (it) 1986-08-29
JPS63218933A (ja) 1988-09-12
US4806988A (en) 1989-02-21
EP0261407A2 (de) 1988-03-30
EP0261407A3 (en) 1989-07-12

Similar Documents

Publication Publication Date Title
DE68914712D1 (de) Bildsensorapparat mit einer automatischen Fokussiereinrichtung für automatische Fokusanpassung in Abhängigkeit von Videosignalen.
DE68914025D1 (de) Bildsensorapparat mit einer automatischen Fokussiereinrichtung für automatische Fokusanpassung in Abhängigkeit von Videosignalen.
US4163150A (en) Process and apparatus for automatically realizing Kohler's principle of illumination
GB1532576A (en) Control device for variable focal-length lenses
JPS5764217A (en) Automatic focusing camera
GB1524587A (en) Closed loop automatic focusing unit
JPS6057313A (ja) ズ−ムレンズ
ATA219477A (de) Laufbildkamera fuer tonfilm und stummfilm mit einer selbsttaetigen scharfeinstelleinrichtung
JPS56101111A (en) Automatic focus adjustment method
IT1201628B (it) Procedimento e dispositivo per la messa a fuoco automatica in un ingranditore o riproduttore fotografico ad ingrandimento variabile
JPS6469157A (en) Picture reader
JPS5678823A (en) Automatic focus control device
JPS5697325A (en) Focus detecting method of camera
JPS5838910A (ja) 自動焦点合せ装置及びその方法
JPS6459311A (en) Automatic focusing camera
JPS62166505U (it)
DE3375509D1 (en) Improvements relating to compasses
JPS5652711A (en) Automatic focus detector of base line rangefinder system
JPS6467742A (en) Optical reproducing device
JPS54103306A (en) Automatic focusing device
JPS6069613A (ja) 自動焦点整合装置
JPS57197415A (en) Range finder
JPH0175207U (it)
JPH05224115A (ja) ビデオカメラに於ける被写体追尾装置
JPH04367175A (ja) 撮影装置

Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19950825