AT284503B - Regeleinrichtung zum Scharfeinstellen eines Diapositiv-Projektors - Google Patents

Regeleinrichtung zum Scharfeinstellen eines Diapositiv-Projektors

Info

Publication number
AT284503B
AT284503B AT939866A AT939866A AT284503B AT 284503 B AT284503 B AT 284503B AT 939866 A AT939866 A AT 939866A AT 939866 A AT939866 A AT 939866A AT 284503 B AT284503 B AT 284503B
Authority
AT
Austria
Prior art keywords
focusing
control device
slide projector
projector
slide
Prior art date
Application number
AT939866A
Other languages
English (en)
Original Assignee
Bell & Howell Co
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 Bell & Howell Co filed Critical Bell & Howell Co
Application granted granted Critical
Publication of AT284503B publication Critical patent/AT284503B/de

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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/53—Means for automatic focusing, e.g. to compensate thermal effects

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)
  • Automatic Focus Adjustment (AREA)
  • Focusing (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
AT939866A 1965-10-12 1966-10-07 Regeleinrichtung zum Scharfeinstellen eines Diapositiv-Projektors AT284503B (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US495072A US3349667A (en) 1965-10-12 1965-10-12 Auto-focus slide projector

Publications (1)

Publication Number Publication Date
AT284503B true AT284503B (de) 1970-09-25

Family

ID=23967158

Family Applications (1)

Application Number Title Priority Date Filing Date
AT939866A AT284503B (de) 1965-10-12 1966-10-07 Regeleinrichtung zum Scharfeinstellen eines Diapositiv-Projektors

Country Status (4)

Country Link
US (1) US3349667A (de)
AT (1) AT284503B (de)
DE (1) DE1547177A1 (de)
GB (1) GB1161429A (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3494694A (en) * 1966-08-09 1970-02-10 Cabin Ind Automatic focusing apparatus for use in optical image projector
JPS5140870Y1 (de) * 1969-12-03 1976-10-05
US4018520A (en) * 1975-04-15 1977-04-19 Gaf Corporation Projector focusing mechanism
US4068935A (en) * 1976-09-20 1978-01-17 The Singer Company Backlash free lens focusing apparatus
DE2713186C2 (de) * 1977-03-25 1982-06-24 Ernst Leitz Wetzlar Gmbh, 6330 Wetzlar Diaprojektor mit automatischer Scharfstellvorrichtung
US4415244A (en) * 1982-03-22 1983-11-15 Telex Communications, Inc. Automatic focusing system
GB2183332B (en) * 1985-11-22 1990-06-20 Rank Taylor Hobson Ltd Optical position sensor
CN111077630B (zh) * 2018-10-18 2024-01-05 扬明光学股份有限公司 镜头装置及其制造方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3037423A (en) * 1957-12-30 1962-06-05 Polaroid Corp Automatic focusing system
US3263558A (en) * 1961-05-22 1966-08-02 Sawyers Inc Focusing means for a slide projector
US3205766A (en) * 1962-06-18 1965-09-14 Eastman Kodak Co Control apparatus
US3264935A (en) * 1964-01-06 1966-08-09 Robert W Vose Self-focusing slide projector

Also Published As

Publication number Publication date
GB1161429A (en) 1969-08-13
DE1547177A1 (de) 1969-11-06
US3349667A (en) 1967-10-31

Similar Documents

Publication Publication Date Title
DK133183C (da) Kontrolapparat til en maskine til foldning af et fladt arbejdsstykke
CH482448A (de) Trainingsvorrichtung zum Schiessen von Körpern
CH497657A (de) Vorrichtung zum Mischen zweier Medien
DK111767B (da) Mekanisme til styring af et trykåndingsapparat.
AT293879B (de) Vorrichtung zum Laden einer Kinofilmkassette
AT284503B (de) Regeleinrichtung zum Scharfeinstellen eines Diapositiv-Projektors
CH490693A (de) Vorrichtung zum Abtasten lichtdurchlässiger Steuermarkierungen
CH449698A (de) Einrichtung zum Projizieren eines farbigen Bildes
AT258604B (de) Einrichtung zum Scharfeinstellen eines Bildwerfers
CH496971A (de) Vorrichtung zum Aufspulen von Filmen
CH465414A (de) Strömungsmittel-Steuervorrichtung
DE6750575U (de) Diaprojektionseinrichtung
CH455972A (de) Schweisseinrichtung zum Lichtbogen-Schweissen
CH462497A (de) Filmprojektionsvorrichtung
CH479114A (de) Programmsteuervorrichtung
CH463955A (de) Vorrichtung zum Herstellen von Kopien
CH465984A (de) Manuell betätigbare Einstelleinrichtung für eine Steuervorrichtung
AT265698B (de) Vorrichtung zum Scharfeinstellen von mit einer Diawechselvorrichtung ausgestatteten Diaprojektoren
CH481617A (de) Einrichtung zum Faltenbilden an Vorhängen
CH418668A (de) Positionssteuervorrichtung an einem Mikroskop
CH481618A (de) Einrichtung zum Faltenbilden an Vorhängen
CH472969A (de) Einrichtung zum Einrapportieren
CH543099A (de) Vorrichtung zum Fokussieren eines Projektionsobjektives
GB1123552A (en) Slide changing device for optical projectors
CH441986A (de) Belichtungssteuerungseinrichtung für eine Kamera

Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee