AU4555889A - Uniform illumination in document scanner - Google Patents

Uniform illumination in document scanner

Info

Publication number
AU4555889A
AU4555889A AU45558/89A AU4555889A AU4555889A AU 4555889 A AU4555889 A AU 4555889A AU 45558/89 A AU45558/89 A AU 45558/89A AU 4555889 A AU4555889 A AU 4555889A AU 4555889 A AU4555889 A AU 4555889A
Authority
AU
Australia
Prior art keywords
uniform illumination
document scanner
scanner
document
illumination
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.)
Abandoned
Application number
AU45558/89A
Inventor
Patrick Bellon
Patrick Savalle
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.)
Alcatel Lucent NV
Original Assignee
Alcatel NV
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 Alcatel NV filed Critical Alcatel NV
Publication of AU4555889A publication Critical patent/AU4555889A/en
Abandoned 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
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
    • H04N1/02815—Means for illuminating the original, not specific to a particular type of pick-up head
    • H04N1/02845—Means for illuminating the original, not specific to a particular type of pick-up head using an elongated light source, e.g. tubular lamp, LED array
    • H04N1/0287—Means for illuminating the original, not specific to a particular type of pick-up head using an elongated light source, e.g. tubular lamp, LED array using a tubular lamp or a combination of such lamps
    • 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
    • G03G15/04036—Details of illuminating systems, e.g. lamps, reflectors
    • 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
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
    • H04N1/02815—Means for illuminating the original, not specific to a particular type of pick-up head
    • 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
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
    • H04N1/02815—Means for illuminating the original, not specific to a particular type of pick-up head
    • H04N1/02885—Means for compensating spatially uneven illumination, e.g. an aperture arrangement
    • 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
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
    • H04N1/03—Details of scanning heads ; Means for illuminating the original for picture information pick-up with photodetectors arranged in a substantially linear array

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Optical Systems Of Projection Type Copiers (AREA)
AU45558/89A 1988-12-09 1989-11-27 Uniform illumination in document scanner Abandoned AU4555889A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8816225A FR2640399B1 (en) 1988-12-09 1988-12-09 ILLUMINATION CORRECTION DEVICE FOR DOCUMENT ANALYZER
FR8816225 1988-12-09

Publications (1)

Publication Number Publication Date
AU4555889A true AU4555889A (en) 1990-06-14

Family

ID=9372778

Family Applications (1)

Application Number Title Priority Date Filing Date
AU45558/89A Abandoned AU4555889A (en) 1988-12-09 1989-11-27 Uniform illumination in document scanner

Country Status (4)

Country Link
EP (1) EP0372447A1 (en)
JP (1) JPH03121655A (en)
AU (1) AU4555889A (en)
FR (1) FR2640399B1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5726446A (en) * 1995-10-31 1998-03-10 Hewlett Packard Company Line-focus system with a self-adhesive occluding aperture attached to a light source
CH696216A5 (en) * 2002-01-15 2007-02-15 Volpi Ag Line illumination.
DE102005002934A1 (en) * 2005-01-21 2006-07-27 Roche Diagnostics Gmbh System and method for optical imaging of objects on a detection device by means of a pinhole
JP5344386B2 (en) 2008-05-16 2013-11-20 株式会社キャットアイ Vibration generator

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2443020A1 (en) * 1978-11-28 1980-06-27 Cit Alcatel Uniformly illuminating linear light source - has diaphragm or reflector shaped to compensate end effects of fluorescent tube
US4845570A (en) * 1986-09-29 1989-07-04 Tokyo Electric Co., Ltd. Optical image sensor

Also Published As

Publication number Publication date
EP0372447A1 (en) 1990-06-13
FR2640399B1 (en) 1991-09-27
JPH03121655A (en) 1991-05-23
FR2640399A1 (en) 1990-06-15

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