FR2443077A1 - Systeme optique de projection destine a des machines a copier - Google Patents

Systeme optique de projection destine a des machines a copier

Info

Publication number
FR2443077A1
FR2443077A1 FR7929680A FR7929680A FR2443077A1 FR 2443077 A1 FR2443077 A1 FR 2443077A1 FR 7929680 A FR7929680 A FR 7929680A FR 7929680 A FR7929680 A FR 7929680A FR 2443077 A1 FR2443077 A1 FR 2443077A1
Authority
FR
France
Prior art keywords
copying machines
lenses
projection system
optical projection
projection device
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
FR7929680A
Other languages
English (en)
Other versions
FR2443077B1 (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.)
Canon Inc
Original Assignee
Canon Inc
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
Priority claimed from JP14867478A external-priority patent/JPS5574508A/ja
Priority claimed from JP14867578A external-priority patent/JPS5574509A/ja
Application filed by Canon Inc filed Critical Canon Inc
Publication of FR2443077A1 publication Critical patent/FR2443077A1/fr
Application granted granted Critical
Publication of FR2443077B1 publication Critical patent/FR2443077B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/0006—Arrays
    • G02B3/0037—Arrays characterized by the distribution or form of lenses
    • G02B3/0056—Arrays characterized by the distribution or form of lenses arranged along two different directions in a plane, e.g. honeycomb arrangement of lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/24—Optical objectives specially designed for the purposes specified below for reproducing or copying at short object distances
    • 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
    • G03B27/52—Details
    • G03B27/522—Projection optics
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
    • G03G15/041—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with variable magnification

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)

Abstract

L'invention concerne un dispositif de projection destiné à des machines à copier. Le dispositif de projection utilise des objectifs élémentaires constitués chacun de deux lentilles 40, 41 en forme de barreau, ayant une grande longueur, dans la direction de leur axe optique par rapport à leur diamètre utile. Ces lentilles déterminent, par éclipse d'ouverture, la distribution de l'intensité lumineuse sur une surface partielle prédéterminée d'un plan image, cette surface correspondant à une partie de la surface de l'objet. La partie périphérique extérieure des lentilles est entourée d'un élément d'absorption de la lumière qui atténue et supprime les rayons lumineux inutiles. Domaine d'application : machines à copier.
FR7929680A 1978-12-01 1979-12-03 Systeme optique de projection destine a des machines a copier Granted FR2443077A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP14867478A JPS5574508A (en) 1978-12-01 1978-12-01 Projector
JP14867578A JPS5574509A (en) 1978-12-01 1978-12-01 Projector

Publications (2)

Publication Number Publication Date
FR2443077A1 true FR2443077A1 (fr) 1980-06-27
FR2443077B1 FR2443077B1 (fr) 1983-12-16

Family

ID=26478798

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7929680A Granted FR2443077A1 (fr) 1978-12-01 1979-12-03 Systeme optique de projection destine a des machines a copier

Country Status (3)

Country Link
DE (1) DE2948348A1 (fr)
FR (1) FR2443077A1 (fr)
GB (1) GB2042758B (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4335305A (en) * 1980-08-18 1982-06-15 Xerox Corporation Twisting geometry scanner utilizing staggered lens array
DE3104545A1 (de) * 1981-02-10 1982-10-21 Bernd 7500 Karlsruhe Schlue Optisches geraet fuer grosse schwinkel und abbildungsmassstaebe
NL8300359A (nl) * 1982-02-01 1983-09-01 Nippon Sheet Glass Co Ltd Plaatvormige lens en een werkwijze voor het vervaardigen ervan.
JPS5934514A (ja) * 1982-08-23 1984-02-24 Ricoh Co Ltd 結像光学装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1592947A (fr) * 1967-11-27 1970-05-19

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH460381A (de) * 1966-07-29 1968-07-31 Rank Xerox Ltd Optisches Abbildungssystem
US3584952A (en) * 1967-11-17 1971-06-15 Xerox Corp Lens strip optical scanning system
DE1298407B (de) * 1967-11-27 1969-06-26 Agfa Gevaert Ag Belichtungsanordnung fuer Kopiergeraete
US3694076A (en) * 1970-08-31 1972-09-26 Paul E Weber Multiple lenslet copier
US3836249A (en) * 1972-09-13 1974-09-17 Bell & Howell Co Optical imaging system of short focal lens
DE2813763A1 (de) * 1977-03-31 1978-10-12 Canon Kk Projektionseinrichtung
JPS5454057A (en) * 1977-10-07 1979-04-27 Canon Inc Projecting apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1592947A (fr) * 1967-11-27 1970-05-19

Also Published As

Publication number Publication date
GB2042758A (en) 1980-09-24
DE2948348A1 (de) 1980-06-04
FR2443077B1 (fr) 1983-12-16
DE2948348C2 (fr) 1991-05-08
GB2042758B (en) 1983-05-11

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