CA2508602A1 - Optical code reader having variable depth of field - Google Patents

Optical code reader having variable depth of field Download PDF

Info

Publication number
CA2508602A1
CA2508602A1 CA002508602A CA2508602A CA2508602A1 CA 2508602 A1 CA2508602 A1 CA 2508602A1 CA 002508602 A CA002508602 A CA 002508602A CA 2508602 A CA2508602 A CA 2508602A CA 2508602 A1 CA2508602 A1 CA 2508602A1
Authority
CA
Canada
Prior art keywords
field
imaging
optical code
code reader
variable depth
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
CA002508602A
Other languages
French (fr)
Other versions
CA2508602C (en
Inventor
Paul Dvorkis
Alex Breytman
Mark Krichever
Brad Carlson
Tsi David Shi
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.)
Symbol Technologies LLC
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 CA2508602A1 publication Critical patent/CA2508602A1/en
Application granted granted Critical
Publication of CA2508602C publication Critical patent/CA2508602C/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
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/08—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means
    • G06K19/10—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards
    • G06K19/14—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards the marking being sensed by radiation
    • 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
    • G06K7/0004—Hybrid readers
    • 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
    • G06K7/0008—General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
    • 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
    • G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
    • G06K7/10366—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the interrogation device being adapted for miscellaneous applications
    • G06K7/10376—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the interrogation device being adapted for miscellaneous applications the interrogation device being adapted for being moveable
    • G06K7/10386—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the interrogation device being adapted for miscellaneous applications the interrogation device being adapted for being moveable the interrogation device being of the portable or hand-handheld type, e.g. incorporated in ubiquitous hand-held devices such as PDA or mobile phone, or in the form of a portable dedicated RFID reader
    • 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
    • G06K7/10792—Special measures in relation to the object to be scanned
    • G06K7/10801—Multidistance reading
    • G06K7/10811—Focalisation

Abstract

Several optical systems for imaging engines of imaging optical code readers are disclosed. Each optical system includes the abilities to change the depth of field of the imaging field and to adjust a focus quality of the imaging field. The disclosed structures for changing the depth of field of the disclosed optical systems allow for the automatic or manual selection of one of a plurality of depths of field.
CA002508602A 2002-12-18 2003-12-17 Optical code reader having variable depth of field Expired - Lifetime CA2508602C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US43451902P 2002-12-18 2002-12-18
US60/434,519 2002-12-18
US10/405,812 2003-04-02
US10/405,812 US7025271B2 (en) 2002-12-18 2003-04-02 Imaging optical code reader having selectable depths of field
PCT/US2003/040459 WO2004057521A2 (en) 2002-12-18 2003-12-17 Optical code reader having variable depth of field

Publications (2)

Publication Number Publication Date
CA2508602A1 true CA2508602A1 (en) 2004-07-08
CA2508602C CA2508602C (en) 2008-09-30

Family

ID=32599816

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002508602A Expired - Lifetime CA2508602C (en) 2002-12-18 2003-12-17 Optical code reader having variable depth of field

Country Status (7)

Country Link
US (1) US7025271B2 (en)
EP (1) EP1584061B1 (en)
AT (1) ATE456104T1 (en)
AU (1) AU2003297990B2 (en)
CA (1) CA2508602C (en)
DE (1) DE60331105D1 (en)
WO (1) WO2004057521A2 (en)

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9536124B1 (en) 2003-10-24 2017-01-03 Cognex Corporation Integrated illumination assembly for symbology reader
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
US7874487B2 (en) 2005-10-24 2011-01-25 Cognex Technology And Investment Corporation 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
US8316068B2 (en) * 2004-06-04 2012-11-20 Telefonaktiebolaget Lm Ericsson (Publ) Memory compression
US7617984B2 (en) * 2004-12-16 2009-11-17 Cognex Technology And Investment Corporation Hand held symbology reader illumination diffuser
US9292724B1 (en) 2004-12-16 2016-03-22 Cognex Corporation Hand held symbology reader illumination diffuser with aimer optics
US8061610B2 (en) * 2005-10-24 2011-11-22 Cognex Technology And Investment Corporation System and method for employing color illumination and color filtration in a symbology reader
US7965887B2 (en) * 2005-12-01 2011-06-21 Cognex Technology And Investment Corp. Method of pattern location using color image data
US8181878B2 (en) * 2006-01-25 2012-05-22 Cognex Technology And Investment Corporation Method and apparatus for providing a focus indication for optical imaging of visual codes
US7549582B1 (en) 2006-05-30 2009-06-23 Cognex Technology And Investment Corporation Method and apparatus for adjusting focus in a symbology reader
US8033670B2 (en) * 2006-12-29 2011-10-11 Cognex Corporation Manually adjustable ruggedized focus mechanism
US20080265035A1 (en) * 2007-04-25 2008-10-30 Symbol Technologies, Inc. Dual imaging lens system for bar code reader
US8302864B2 (en) 2007-12-28 2012-11-06 Cognex Corporation Method and apparatus using aiming pattern for machine vision training
US8646689B2 (en) 2007-12-28 2014-02-11 Cognex Corporation Deformable light pattern for machine vision system
US7762466B2 (en) * 2008-12-18 2010-07-27 Symbol Technologies, Inc. Two position zoom lens assembly for an imaging-based bar code reader
US8134116B2 (en) 2009-01-12 2012-03-13 Cognex Corporation Modular focus system for image based code readers
CN102308305B (en) * 2009-02-04 2014-11-05 数据逻辑Adc公司 Systems and methods for selectively masking a scan volume of a data reader
US8746887B2 (en) * 2009-07-24 2014-06-10 Samsung Electronics Co., Ltd. Stereoscopic image projection system
DE202009017346U1 (en) * 2009-12-21 2011-05-12 Sick Ag Optics device for an optoelectronic sensor
US20110290886A1 (en) * 2010-05-27 2011-12-01 Symbol Technologies, Inc. Imaging bar code reader having variable aperture
US8632011B2 (en) 2011-01-18 2014-01-21 Datalogic ADC, Inc. Systems and methods for illuminating a scan volume of an optical code reader
US9224024B2 (en) 2011-11-11 2015-12-29 Honeywell International, Inc. Invariant design image capture device
US8947590B2 (en) 2011-11-22 2015-02-03 Cognex Corporation Vision system camera with mount for multiple lens types
US11366284B2 (en) 2011-11-22 2022-06-21 Cognex Corporation Vision system camera with mount for multiple lens types and lens module for the same
US10498933B2 (en) 2011-11-22 2019-12-03 Cognex Corporation Camera system with exchangeable illumination assembly
US9746636B2 (en) 2012-10-19 2017-08-29 Cognex Corporation Carrier frame and circuit board for an electronic device
USD726186S1 (en) * 2013-10-25 2015-04-07 Symbol Technologies, Inc. Scanner
US9697401B2 (en) 2015-11-24 2017-07-04 Hand Held Products, Inc. Add-on device with configurable optics for an image scanner for scanning barcodes
US11095868B1 (en) 2016-07-01 2021-08-17 Cognex Corporation Vision systems and methods of making and using the same
US10592712B2 (en) * 2017-12-01 2020-03-17 Datalogic Ip Tech S.R.L. Compact camera module with multilevel zoom and focus distance utilizing a switchable mirror
DE202021103066U1 (en) 2021-06-07 2022-09-08 Sick Ag Camera for capturing objects moving through a detection area
DE102021114556A1 (en) 2021-06-07 2022-12-08 Sick Ag Camera and method for detecting objects moving through a detection area
US20230401403A1 (en) * 2022-06-13 2023-12-14 Datalogic Ip Tech S.R.L. Dynamic diffusive illumination systems and methods

Family Cites Families (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3812459A (en) 1972-03-08 1974-05-21 Optical Business Machines Opticscan arrangement for optical character recognition systems
US4251798A (en) 1978-05-31 1981-02-17 Symbol Technologies Portable laser scanning arrangement for and method of evaluating and validating bar code symbols
US5308966A (en) * 1986-08-08 1994-05-03 Norand Corporation Hand-held instant bar code reader having automatic focus control for operation over a range of distances
US4877949A (en) 1986-08-08 1989-10-31 Norand Corporation Hand-held instant bar code reader system with automated focus based on distance measurements
US6247647B1 (en) 1988-09-19 2001-06-19 Symbol Technologies, Inc. Scan pattern generator convertible between multiple and single line patterns
US5561283A (en) 1988-10-21 1996-10-01 Symbol Technologies, Inc. Laser scanning system and scanning method for reading bar codes
US5192856A (en) 1990-11-19 1993-03-09 An Con Genetics, Inc. Auto focusing bar code reader
US5210398A (en) 1991-06-14 1993-05-11 Symbol Technologies, Inc. Optical scanner with extended depth of focus
JP3031013B2 (en) 1991-11-15 2000-04-10 日産自動車株式会社 Visual information providing device
DE4142701A1 (en) 1991-12-21 1993-07-01 Leuze Electronic Gmbh & Co FOCUS ADJUSTMENT DEVICE FOR ADJUSTING THE DEPTH OF AN OPTICAL SCANNER DEVICE
US5414251A (en) 1992-03-12 1995-05-09 Norand Corporation Reader for decoding two-dimensional optical information
EP0583514A1 (en) * 1992-08-19 1994-02-23 Opticon Sensors Europe B.V. Focusing means for a symbol code reader
US5479011A (en) * 1992-12-18 1995-12-26 Spectra-Physics Scanning Systems, Inc. Variable focus optical system for data reading
FR2700404B1 (en) 1993-01-11 1995-03-31 Reflexion Plus Barcode sticker reader, of the so-called "hand-held" type with increased depth of field.
WO1994027172A1 (en) 1993-05-11 1994-11-24 Norand Corporation Focusing method and apparatus for reading two dimensional optical information sets and the like
US5672858A (en) 1994-06-30 1997-09-30 Symbol Technologies Inc. Apparatus and method for reading indicia using charge coupled device and scanning laser beam technology
US5796089A (en) 1995-09-21 1998-08-18 Symbol Technologies, Inc. Bar code scanner with simplified auto-focus capability
US6179208B1 (en) * 1997-01-31 2001-01-30 Metanetics Corporation Portable data collection device with variable focusing module for optic assembly
US6340114B1 (en) 1998-06-12 2002-01-22 Symbol Technologies, Inc. Imaging engine and method for code readers
US6729541B1 (en) * 1998-07-01 2004-05-04 Nippon Telegraph & Telephone Corporation Information reading apparatus and information recording medium
US6066857A (en) * 1998-09-11 2000-05-23 Robotic Vision Systems, Inc. Variable focus optical system
US6336587B1 (en) 1998-10-19 2002-01-08 Symbol Technologies, Inc. Optical code reader for producing video displays and measuring physical parameters of objects
WO2000063745A2 (en) 1999-04-20 2000-10-26 Koninklijke Philips Electronics N.V. Transflective display device
US6548795B1 (en) 1999-10-21 2003-04-15 3M Innovative Properties Company Autofocus Z stage
CA2406124A1 (en) * 2000-04-21 2001-11-22 Lawrence E. Albertelli Wide-field extended-depth doubly telecentric catadioptric optical system for digital imaging
US6689998B1 (en) * 2000-07-05 2004-02-10 Psc Scanning, Inc. Apparatus for optical distancing autofocus and imaging and method of using the same
US6522441B1 (en) 2000-11-28 2003-02-18 Psc Scanning, Inc. Micro-optical system for an auto-focus scanner having an improved depth of field
US6651886B2 (en) 2001-04-13 2003-11-25 Symbol Technologies, Inc. Optical code readers with holographic optical elements

Also Published As

Publication number Publication date
US7025271B2 (en) 2006-04-11
EP1584061B1 (en) 2010-01-20
US20040118918A1 (en) 2004-06-24
AU2003297990A1 (en) 2004-07-14
EP1584061A2 (en) 2005-10-12
ATE456104T1 (en) 2010-02-15
AU2003297990B2 (en) 2010-07-01
DE60331105D1 (en) 2010-03-11
WO2004057521A3 (en) 2004-09-30
WO2004057521A2 (en) 2004-07-08
WO2004057521B1 (en) 2004-12-16
CA2508602C (en) 2008-09-30

Similar Documents

Publication Publication Date Title
CA2508602A1 (en) Optical code reader having variable depth of field
WO2002054137A3 (en) Holographic multifocal lens
WO2002103406A3 (en) Modular scope
EP2278792A3 (en) Photosensor system and drive control method thereof
EP1401216A3 (en) Autostereoscopic display
WO2007076932A3 (en) Illumination lens for an optical code reader
EP0307876A3 (en) Ophthalmic lenses
WO2001056265A3 (en) Method and system for the three-dimensional representation
DK0690873T3 (en) Growth Differentiation Factor-8
AU4241601A (en) Method for producing an artificial ocular lens
DE69627425T2 (en) Varifocal lens with inner focus
FR2709895B1 (en) Optical demultiplexer and demultiplexing method for optical / RF signals.
DE69017509D1 (en) Camera capable of freely adjusting a lens area in a viewed scene.
EP1435015A4 (en) Photochromic light-polarizing lens for sunglass and method for producing the same
EP1450568A3 (en) Method for transmitting signals in a projection system and projection system which applies such method
AU7827400A (en) Variable ratio anamorphic lens
FR2682776B1 (en) LENS SYSTEM FORMING A VARIABLE FOCAL LENS.
DE69109023D1 (en) Variable magnification lens.
NL1003177A1 (en) Objective lens.
CA2330798A1 (en) Febrifugine, isofebrifugine and method for producing the same
FR2820570B1 (en) OPTICAL TRANSMISSION SYSTEM AND METHOD
AU4675700A (en) Three-component lens retainer
FR2817974B1 (en) OPTICAL MICRO-ACTUATOR, OPTICAL COMPONENT USING THE MICRO-ACTUATOR, AND METHOD FOR PRODUCING AN OPTICAL MICRO-ACTUATOR
CA2397817A1 (en) Flat-field panel flattening, and panel connecting methods
NL1003871A1 (en) Zoom lens system with large zoom ratio.

Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20231218