AU2001238640A1 - Optimal symbology illumination-apparatus and method - Google Patents

Optimal symbology illumination-apparatus and method

Info

Publication number
AU2001238640A1
AU2001238640A1 AU2001238640A AU3864001A AU2001238640A1 AU 2001238640 A1 AU2001238640 A1 AU 2001238640A1 AU 2001238640 A AU2001238640 A AU 2001238640A AU 3864001 A AU3864001 A AU 3864001A AU 2001238640 A1 AU2001238640 A1 AU 2001238640A1
Authority
AU
Australia
Prior art keywords
illumination
imager
light
illumination pattern
symbology
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
AU2001238640A
Inventor
Howard Stern
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.)
Acuity CiMatrix Inc
Original Assignee
Robotic Vision Systems 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
Application filed by Robotic Vision Systems Inc filed Critical Robotic Vision Systems Inc
Publication of AU2001238640A1 publication Critical patent/AU2001238640A1/en
Abandoned 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
    • G06K7/10712—Fixed beam scanning
    • G06K7/10722—Photodetector array or CCD scanning
    • G06K7/10742—Photodetector array or CCD scanning including a diffuser for diffusing the light from the light source to create substantially uniform illumination of the target record carrier
    • 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

Abstract

An imager for illuminating and imaging encoded symbology to facilitate decoding of the symbology and which provides both "bright field" and "dark field" illumination patterns is provided with an illumination directing device to direct the "bright field" illumination pattern into an alternative "dark field" illumination pattern. In one embodiment the illumination directing device takes the configuration of a disc that is selectively positionable in front of the imager and removable therefrom depending upon whether or not the illumination pattern is to be changed. The disc snap fits into a position at the front of the imager housing and includes a fresnel configured outer ring, a light blocking inner ring, and a light transmissive center. The fresnel configuration receives light and redirects the light forward of the imager and towards a center line passing through the device to provide the alternative illumination pattern. Other embodiments of illumination directing devices are to be carried by the imager for disposition in either operative or inoperative positions; while still other embodiments of illumination directing devices selectively position collimating lenses and reflective surfaces to receive and redirect light from the images or permit the light from the imager to provide an unmodified illumination pattern.
AU2001238640A 2000-02-25 2001-02-22 Optimal symbology illumination-apparatus and method Abandoned AU2001238640A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09512835 2000-02-25
US09/512,835 US6429934B1 (en) 1998-09-11 2000-02-25 Optimal symbology illumination-apparatus and method
PCT/US2001/005720 WO2001063258A1 (en) 2000-02-25 2001-02-22 Optimal symbology illumination-apparatus and method

Publications (1)

Publication Number Publication Date
AU2001238640A1 true AU2001238640A1 (en) 2001-09-03

Family

ID=24040777

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001238640A Abandoned AU2001238640A1 (en) 2000-02-25 2001-02-22 Optimal symbology illumination-apparatus and method

Country Status (7)

Country Link
US (1) US6429934B1 (en)
EP (1) EP1269157B1 (en)
AT (1) ATE373818T1 (en)
AU (1) AU2001238640A1 (en)
CA (1) CA2404153A1 (en)
DE (1) DE60130546T2 (en)
WO (1) WO2001063258A1 (en)

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WO2002063543A2 (en) 2001-01-22 2002-08-15 Hand Held Products, Inc. Optical reader having partial frame operating mode
US7331523B2 (en) 2001-07-13 2008-02-19 Hand Held Products, Inc. Adaptive optical image reader
US20030029916A1 (en) * 2001-08-10 2003-02-13 John Merva Apparatus and process for simultaneously handling a plurality of symbology encoded articles
US7823789B2 (en) 2004-12-21 2010-11-02 Cognex Technology And Investment Corporation Low profile illumination for direct part mark readers
US7604174B2 (en) 2003-10-24 2009-10-20 Cognex Technology And Investment Corporation Method and apparatus for providing omnidirectional lighting in a scanning device
US9070031B2 (en) 2003-10-24 2015-06-30 Cognex Technology And Investment Llc Integrated illumination assembly for symbology reader
US7823783B2 (en) 2003-10-24 2010-11-02 Cognex Technology And Investment Corporation Light pipe illumination system and method
US9536124B1 (en) 2003-10-24 2017-01-03 Cognex Corporation Integrated illumination assembly for symbology reader
US7874487B2 (en) * 2005-10-24 2011-01-25 Cognex Technology And Investment Corporation Integrated illumination assembly for symbology reader
US7726572B2 (en) * 2004-12-03 2010-06-01 Symbol Technologies, Inc. Bar code scanning decoding
US7337970B2 (en) * 2004-12-03 2008-03-04 Symbol Technologies, Inc. Barcode scanner decoding
US9292724B1 (en) 2004-12-16 2016-03-22 Cognex Corporation Hand held symbology reader illumination diffuser with aimer optics
US7617984B2 (en) 2004-12-16 2009-11-17 Cognex Technology And Investment Corporation Hand held symbology reader illumination diffuser
US20070125863A1 (en) * 2005-12-05 2007-06-07 Jakoboski Timothy A System and method for employing infrared illumination for machine vision
US7614563B1 (en) 2005-12-29 2009-11-10 Cognex Technology And Investment Corporation System and method for providing diffuse illumination in a symbology reader
US20070152064A1 (en) * 2005-12-30 2007-07-05 Laurens Nunnink Diffuse light ring for reading encoded symbols
US20070153084A1 (en) * 2005-12-30 2007-07-05 George Deveau Semiconductor wafer reader and illumination system
DE102006023142A1 (en) * 2006-05-16 2007-11-22 Sick Ag Camera lighting unit
JP4306741B2 (en) * 2006-07-20 2009-08-05 株式会社デンソーウェーブ Optical information reader
US7852519B2 (en) 2007-02-05 2010-12-14 Hand Held Products, Inc. Dual-tasking decoder for improved symbol reading
WO2008124397A1 (en) 2007-04-03 2008-10-16 David Fishbaine Inspection system and method
EP2210145A4 (en) * 2007-11-01 2013-05-29 Enlight Photo Ltd Improved ring light diffuser
US8628015B2 (en) 2008-10-31 2014-01-14 Hand Held Products, Inc. Indicia reading terminal including frame quality evaluation processing
US20100226114A1 (en) * 2009-03-03 2010-09-09 David Fishbaine Illumination and imaging system
US8587595B2 (en) 2009-10-01 2013-11-19 Hand Held Products, Inc. Low power multi-core decoder system and method
US10528772B1 (en) 2012-02-24 2020-01-07 Socket Mobile, Inc. Assisted aimer for optimized symbol scanning by a portable computing device having an integral camera
US20140158769A1 (en) * 2012-12-07 2014-06-12 The Code Corporation Bar code-reading capabilities of a portable, hand-held computing device that comprises a camera
US10650205B2 (en) 2018-09-28 2020-05-12 Hand Held Products, Inc. Methods, systems, and apparatuses for scanning and decoding direct part marking indicia

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AT297369B (en) * 1969-05-09 1972-03-27 Reichert Optische Werke Ag Illumination device for reflected light microscopes
JPS5330350A (en) * 1976-09-01 1978-03-22 Olympus Optical Co Ltd Optical microscope
US4595289A (en) * 1984-01-25 1986-06-17 At&T Bell Laboratories Inspection system utilizing dark-field illumination
US5136145A (en) * 1987-11-23 1992-08-04 Karney James L Symbol reader
US5011244A (en) * 1988-12-16 1991-04-30 Hughes Aircraft Company Holographic full color data retrieval and projection system
JPH0821056B2 (en) * 1989-09-12 1996-03-04 日本電装株式会社 Bar code reader
US5469294A (en) * 1992-05-01 1995-11-21 Xrl, Inc. Illumination system for OCR of indicia on a substrate
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US5697699A (en) * 1993-09-09 1997-12-16 Asahi Kogaku Kogyo Kabushiki Kaisha Lighting apparatus
DE69631342T2 (en) * 1996-04-02 2004-11-11 Cognex Corp., Natick PICTURING DEVICE FOR VISUALIZING CHARACTERS ON A SUBSTANTIVE SUBSTRATE
US6098887A (en) * 1998-09-11 2000-08-08 Robotic Vision Systems, Inc. Optical focusing device and method
US6066857A (en) * 1998-09-11 2000-05-23 Robotic Vision Systems, Inc. Variable focus optical system

Also Published As

Publication number Publication date
US6429934B1 (en) 2002-08-06
DE60130546D1 (en) 2007-10-31
CA2404153A1 (en) 2001-08-30
EP1269157B1 (en) 2007-09-19
EP1269157A4 (en) 2004-11-03
EP1269157A1 (en) 2003-01-02
WO2001063258A1 (en) 2001-08-30
ATE373818T1 (en) 2007-10-15
DE60130546T2 (en) 2008-08-14

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