CA2156152A1 - Method and Apparatus for Illumination and Imaging of a Surface Employing Light-Emitting Diodes - Google Patents

Method and Apparatus for Illumination and Imaging of a Surface Employing Light-Emitting Diodes

Info

Publication number
CA2156152A1
CA2156152A1 CA2156152A CA2156152A CA2156152A1 CA 2156152 A1 CA2156152 A1 CA 2156152A1 CA 2156152 A CA2156152 A CA 2156152A CA 2156152 A CA2156152 A CA 2156152A CA 2156152 A1 CA2156152 A1 CA 2156152A1
Authority
CA
Canada
Prior art keywords
imaging
illumination
ccd
lensing
emitting diodes
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
CA2156152A
Other languages
French (fr)
Other versions
CA2156152C (en
Inventor
Alexander Brandorff
John W. Sussmeier
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.)
United Parcel Service of America Inc
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
Publication of CA2156152A1 publication Critical patent/CA2156152A1/en
Application granted granted Critical
Publication of CA2156152C publication Critical patent/CA2156152C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
    • G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
    • G06K7/1092—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices sensing by means of TV-scanning
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
    • G06K7/10712—Fixed beam scanning
    • G06K7/10722—Photodetector array or CCD scanning
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
    • G06K7/10712—Fixed beam scanning
    • G06K7/10722—Photodetector array or CCD scanning
    • G06K7/10732—Light sources

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Toxicology (AREA)
  • General Health & Medical Sciences (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Health & Medical Sciences (AREA)
  • Theoretical Computer Science (AREA)
  • Studio Devices (AREA)
  • Image Input (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Photo Coupler, Interrupter, Optical-To-Optical Conversion Devices (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Microscoopes, Condenser (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

An apparatus for illuminating and imaging a surface (14) includes a two-dimensional array of LEDs (120) for providing uniform illumination to tile surface, the LEDs being mounted on a planar surface (110) with a centrally defined aperture (112) and a CCD-based camera (210) with appropriate lensing (220) for obtaining an image of the illuminated surface and providing a signal representative of that obtained image to a processing unit, the CCD-based camera lensing being disposed through the centrally defined aperture in the planar surface of the LED array, and the LED array and CCD-camera lensing being disposed inside an opaque shroud (300).
CA002156152A 1993-02-18 1994-02-17 Method and apparatus for illumination and imaging of a surface employing light-emitting diodes Expired - Lifetime CA2156152C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/019,220 1993-02-18
US08/019,220 US5408084A (en) 1993-02-18 1993-02-18 Method and apparatus for illumination and imaging of a surface using 2-D LED array
PCT/US1994/001661 WO1994019764A1 (en) 1993-02-18 1994-02-17 Method and apparatus for illumination and imaging of a surface employing light-emitting diodes

Publications (2)

Publication Number Publication Date
CA2156152A1 true CA2156152A1 (en) 1994-09-01
CA2156152C CA2156152C (en) 1999-12-28

Family

ID=21792067

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002156152A Expired - Lifetime CA2156152C (en) 1993-02-18 1994-02-17 Method and apparatus for illumination and imaging of a surface employing light-emitting diodes

Country Status (10)

Country Link
US (1) US5408084A (en)
EP (1) EP0685091B1 (en)
JP (1) JP2877517B2 (en)
AT (1) ATE188566T1 (en)
AU (1) AU6241094A (en)
CA (1) CA2156152C (en)
DE (1) DE69422499D1 (en)
ES (1) ES2141821T3 (en)
GR (1) GR3032937T3 (en)
WO (1) WO1994019764A1 (en)

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Also Published As

Publication number Publication date
CA2156152C (en) 1999-12-28
WO1994019764A1 (en) 1994-09-01
AU6241094A (en) 1994-09-14
EP0685091B1 (en) 2000-01-05
ATE188566T1 (en) 2000-01-15
GR3032937T3 (en) 2000-07-31
US5408084A (en) 1995-04-18
JP2877517B2 (en) 1999-03-31
ES2141821T3 (en) 2000-04-01
DE69422499D1 (en) 2000-02-10
EP0685091A1 (en) 1995-12-06
JPH08508356A (en) 1996-09-03

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Effective date: 20140217

MKEX Expiry

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