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DE3402115A1 - LINE SCANNER - Google Patents

LINE SCANNER

Info

Publication number
DE3402115A1
DE3402115A1 DE19843402115 DE3402115A DE3402115A1 DE 3402115 A1 DE3402115 A1 DE 3402115A1 DE 19843402115 DE19843402115 DE 19843402115 DE 3402115 A DE3402115 A DE 3402115A DE 3402115 A1 DE3402115 A1 DE 3402115A1
Authority
DE
Germany
Prior art keywords
light
line
axis
reflected
circle
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.)
Withdrawn
Application number
DE19843402115
Other languages
German (de)
Inventor
Heiner Dipl.-Ing. 3012 Langenhagen Stukenbrock
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19843402115 priority Critical patent/DE3402115A1/en
Priority to PCT/DE1985/000017 priority patent/WO1985003188A2/en
Priority to AU38862/85A priority patent/AU3886285A/en
Priority to EP19850900643 priority patent/EP0170666A1/en
Publication of DE3402115A1 publication Critical patent/DE3402115A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/12—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using the sheet-feed movement or the medium-advance or the drum-rotation movement as the slow scanning component, e.g. arrangements for the main-scanning
    • H04N1/1205—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using the sheet-feed movement or the medium-advance or the drum-rotation movement as the slow scanning component, e.g. arrangements for the main-scanning using a device, e.g. an optical fibre bundle, converting rectilinear scanning into circular line scanning or vice versa

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

A laser beam guided by a single face turning mirror in the light entrance ends arranged circularly of optical fibres illuminates sequentially an image surface arranged quite close in front of the light outlet ends arranged for one line. The light which is reflected may be brought to a detector.

Description

Beschreibungdescription

Die Erfindung betrifft einen Zeilenabtaster Das zeilenweise optische Abtasten von Dokumenten zwecks Umwandlung in serielle elektrische Signale, die dann entweder zu einem Faksimileempfänger übertragen oder als elektrische Signale abgespeichert werden, erfordert Zeilenabtaster.The invention relates to a line scanner that is optical line by line Scanning documents for conversion into serial electrical signals, which are then either transmitted to a facsimile receiver or stored as electrical signals requires line scanner.

Diese arbeiten entweder nach dem Verfahren, das Bild einer ganzen Dokumentenzeile über eine Verkleinerungsoptik auf eine CCD-Sensorzeile abzubilden, oder sie beleuchten das Dokument Punkt für Punkt nacheinander mit einem Laser und messen das reflektierte Licht mit einer einzelnen Fotodiode.These either work according to the procedure, the image of a whole To map the document line onto a CCD sensor line using a reduction lens, or they illuminate the document point by point one after the other with a laser and measure the reflected light with a single photodiode.

Ein Nachteil beider. Verfahren ist, daß aus Gründen der optischen Abbildung keine flache Bauweise möglich ist.A disadvantage of both. Procedure is that for the sake of optical Figure no flat design is possible.

Aufgabe der Erfindung ist es, einen Zeilenabtaster flacher Bauweise zu realisieren.The object of the invention is to provide a flat line scanner to realize.

In der Erfindung wird die Dokumentenzeile Bildpukt nach Bildpunkt mit einem Laser beleuchtet. Diese sequentielle Beleuchtung wird dadurch erreicht, daß zu jedem Bildpunkt eine Lichtleitfaser führt, die mit den anderen in einem Lichtleitfaserband nach Art eines Flachkabels zusammenhängt.In the invention, the document line is pixel by pixel illuminated with a laser. This sequential lighting is achieved by that to each pixel an optical fiber leads, which with the others in an optical fiber ribbon related in the manner of a flat cable.

Der Laserstrahl wird in die Lichteintrittsenden der Lichtleitfasern gelenkt, die zu einem Kreis geformt sind, in dessen Mittelpunkt ein Drehspiegel rotiert, dessen Drehachse mit der Normalen auf die Kreisfläche zusammenfällt.The laser beam is directed into the light entry ends of the optical fibers steered, which are shaped into a circle, in the center of which a rotating mirror rotates whose axis of rotation coincides with the normal to the circular surface.

Die Drehspiegelfläche ist 45 Grad zur Drehachse geneigt, so daß der axial auf den ziegel treffende Laserstrahl radial zu den Lichteintrittsenden der Fasern hin abgelenkt wird.The rotating mirror surface is inclined 45 degrees to the axis of rotation, so that the The laser beam hitting the brick axially radially to the light entry ends of the Fibers is deflected.

Das von dem Dokument reflektierte Licht wird durch die gleiche Faser, durch die es kam, zu einer in Spiegelachsnähe befindlichen Fotodiode gelenkt.The light reflected from the document is passed through the same fiber, through which it came, steered to a photodiode located near the mirror axis.

Eine andere Möglichkeit ist, das reflektierte Licht durch ein zweites Lichtleitfaserband, dessen lichtaufnehmende Enden sich dicht neben der Zeile der beleuchtenden Faserenden des ersten Bandes befinden, und dessen andere Enden statt zu einer Zeile zu einer Fläche möglichst geringer Abmessungen geformt sind, der Fotodiode zuzuführen.Another option is to pass the reflected light through a second one Optical fiber tape, the light-receiving ends of which are close to the line of illuminating fiber ends of the first ribbon are located, and its other ends instead are formed into a line to form a surface as small as possible, the Feed photodiode.

Durch Anordnung der Fläche des durch die Faserenden gebildeten Kreises parallel zur Abtastfläche ist eine flache Bauweise des Abtasters möglich und die Lichtablenkung mit einem einflächigen Drehspiegel ist einfacher zu beherrschen als die mit Polygonspiegeln.By arranging the area of the circle formed by the fiber ends A flat design of the scanner is possible parallel to the scanning surface and the Light deflection with a single-surface rotating mirror is easier to control than those with polygon mirrors.

Claims (4)

Ansprüche: 1) Vorrichtung zur linienweisen Abtastungvon Flächenbildinhalten dadurch gekennzeichnet, daß axial auf einen 45 Grad zur Drehachse geneigten, einflächigen Drehspiegel auftreffendes, gebündeltes Laserlicht durch diesen radial im Kreis herum abgelenkt wird und durch Lichtleitfasern, deren Lichteintrittsenden am Umfang dieses-Kreises angeordnet sind und deren dicht über der abzutastenden Fläche plazierte Lichtaustrittsenden eine Linie bilden, die Flächenzeilen sequentiell beleuchtet.Claims: 1) Device for line-by-line scanning of surface image contents characterized in that axially inclined at 45 degrees to the axis of rotation, single-surface Concentrated laser light hitting the rotating mirror through it radially in a circle is deflected and by optical fibers, whose light entry ends at the circumference of this circle are arranged and their light exit ends placed close to the surface to be scanned form a line that sequentially illuminates the surface rows. 2) Kegelmantelförmige Ablenkung des gebündelten Laserlichtes durch einen Drehspiegel nach Anspruch 1, der einen von 45 Grad verschiedenen Neigungswinkel zur Drehachse hat.2) Conical jacket-shaped deflection of the bundled laser light a rotating mirror according to claim 1 having an inclination angle other than 45 degrees has to the axis of rotation. 3) Weiterleitung von einer Vorrichtung nach Anspruch 1 und 2 zu einer Flächenzeile geleiteten und von ihr reflektierten Lichtes durch dieselben Fasern, die zur Beleuchtung dienen zu einem in Spiegelachsnähe befindlichen Lichtaufnehmer, der es in Signale verwandelt.3) forwarding of a device according to claim 1 and 2 to one Surface line of guided and reflected light through the same fibers, which are used for lighting to a light sensor located near the mirror axis, which turns it into signals. 4) Weiterleitung von einer Vorrichtung nach Anspruch 1 und 2 zu einer abzutastenden Fläche geleiteten und von ihr reflektierten Lichtes durch eine zweite Reihe von Lichtleitfasern, deren Lichteintrittsenden dicht neben und parallel zu den Lichtaustrittsenden der die Fläche beleuchtenden Lichtleitfaserzeile plaziert sind und deren Lichtaustrittsenden anstatt ebenfalls zu einer Linie zu einer Fläche angeordnet sind, von der das Licht auf einen Lichtaufnehmer fällt, der es in Signale verwandelt.4) forwarding of a device according to claim 1 and 2 to one To be scanned surface guided and reflected by her light through a second Row of optical fibers, the light entry ends of which are close to and parallel to placed at the light exit ends of the optical fiber line illuminating the surface and their light emitting ends instead of also being in a line with a surface are arranged, from which the light falls on a light sensor, which converts it into signals transformed.
DE19843402115 1984-01-24 1984-01-24 LINE SCANNER Withdrawn DE3402115A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE19843402115 DE3402115A1 (en) 1984-01-24 1984-01-24 LINE SCANNER
PCT/DE1985/000017 WO1985003188A2 (en) 1984-01-24 1985-01-23 Line scanner
AU38862/85A AU3886285A (en) 1984-01-24 1985-01-23 Zeilenabtaster
EP19850900643 EP0170666A1 (en) 1984-01-24 1985-01-23 Line scanner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19843402115 DE3402115A1 (en) 1984-01-24 1984-01-24 LINE SCANNER

Publications (1)

Publication Number Publication Date
DE3402115A1 true DE3402115A1 (en) 1985-09-12

Family

ID=6225610

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19843402115 Withdrawn DE3402115A1 (en) 1984-01-24 1984-01-24 LINE SCANNER

Country Status (4)

Country Link
EP (1) EP0170666A1 (en)
AU (1) AU3886285A (en)
DE (1) DE3402115A1 (en)
WO (1) WO1985003188A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2675827B2 (en) * 1988-08-26 1997-11-12 富士通株式会社 Laser scanning device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3401232A (en) * 1963-02-07 1968-09-10 Chicago Aerial Ind Inc Fiber optic scanning apparatus
US4352550A (en) * 1979-12-13 1982-10-05 Iwatsu Electric Co., Ltd. Combination of circular/straight line light beam scan transforming apparatus and optical device and method of fabricating circular/straight line transforming device
DE3239492C2 (en) * 1982-10-26 1986-06-12 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München Scanning device for image processing equipment, in particular facsimile machines

Also Published As

Publication number Publication date
AU3886285A (en) 1985-08-09
WO1985003188A3 (en) 1985-10-10
WO1985003188A2 (en) 1985-08-01
EP0170666A1 (en) 1986-02-12

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Legal Events

Date Code Title Description
8130 Withdrawal