CA2170934A1 - Optical scanners having dual surface optical elements for dual working ranges - Google Patents

Optical scanners having dual surface optical elements for dual working ranges

Info

Publication number
CA2170934A1
CA2170934A1 CA002170934A CA2170934A CA2170934A1 CA 2170934 A1 CA2170934 A1 CA 2170934A1 CA 002170934 A CA002170934 A CA 002170934A CA 2170934 A CA2170934 A CA 2170934A CA 2170934 A1 CA2170934 A1 CA 2170934A1
Authority
CA
Canada
Prior art keywords
dual
scanner
mirror
optical
working ranges
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
CA002170934A
Other languages
French (fr)
Other versions
CA2170934C (en
Inventor
Paul Dvorkis
Edward Barkan
Howard Shepard
Vladimir Gurevich
Mark Krichever
Boris Metlitsky
David Tsi
Raj Bridgelall
Duanfeng He
Joseph Katz
Richard Isaac
Joel Kahn
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
Symbol Technologies LLC
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=23604288&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2170934(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Symbol Technologies LLC filed Critical Symbol Technologies LLC
Priority to CA 2580841 priority Critical patent/CA2580841C/en
Priority to CA002580492A priority patent/CA2580492C/en
Publication of CA2170934A1 publication Critical patent/CA2170934A1/en
Application granted granted Critical
Publication of CA2170934C publication Critical patent/CA2170934C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G06K7/10792—Special measures in relation to the object to be scanned
    • G06K7/10801—Multidistance reading
    • 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
    • G06K7/10554—Moving beam scanning
    • G06K7/10594—Beam path
    • 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
    • G06K7/10554—Moving beam scanning
    • G06K7/10594—Beam path
    • G06K7/10603—Basic scanning using moving elements
    • G06K7/10613—Basic scanning using moving elements by rotation, e.g. polygon
    • G06K7/10623—Constructional details
    • 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
    • G06K7/10554—Moving beam scanning
    • G06K7/10594—Beam path
    • G06K7/10603—Basic scanning using moving elements
    • G06K7/10633—Basic scanning using moving elements by oscillation
    • 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
    • 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
    • G06K7/10881—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 constructional details of hand-held scanners
    • 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
    • G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light

Abstract

An optical scanner such as a bar code scanner includes a segmented fold mirror, the individual sections of which have different profiles. By directing the scanning laser beam across the fold mirror, plurality of scan lines are created, at different distances from the scanner. This provides increased flexibility by extending the scanner's working range. In alternative embodiments, a collector mirror and/or a scanning mirror may be segmented. In addition, beam shaping may be provided by reflecting the beam from one or more aplanar surfaces.
CA002170934A 1995-03-17 1996-03-04 Optical scanners having dual surface optical elements for dual working ranges Expired - Fee Related CA2170934C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA 2580841 CA2580841C (en) 1995-03-17 1996-03-04 System and method for reading optically encoded information
CA002580492A CA2580492C (en) 1995-03-17 1996-03-04 Optical scanners having dual surface optical elements for dual working ranges

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US40558595A 1995-03-17 1995-03-17
US405,585 1995-03-17

Related Child Applications (2)

Application Number Title Priority Date Filing Date
CA002580492A Division CA2580492C (en) 1995-03-17 1996-03-04 Optical scanners having dual surface optical elements for dual working ranges
CA 2580841 Division CA2580841C (en) 1995-03-17 1996-03-04 System and method for reading optically encoded information

Publications (2)

Publication Number Publication Date
CA2170934A1 true CA2170934A1 (en) 1996-09-18
CA2170934C CA2170934C (en) 2007-06-19

Family

ID=23604288

Family Applications (3)

Application Number Title Priority Date Filing Date
CA 2580841 Expired - Fee Related CA2580841C (en) 1995-03-17 1996-03-04 System and method for reading optically encoded information
CA002170934A Expired - Fee Related CA2170934C (en) 1995-03-17 1996-03-04 Optical scanners having dual surface optical elements for dual working ranges
CA002580492A Expired - Fee Related CA2580492C (en) 1995-03-17 1996-03-04 Optical scanners having dual surface optical elements for dual working ranges

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA 2580841 Expired - Fee Related CA2580841C (en) 1995-03-17 1996-03-04 System and method for reading optically encoded information

Family Applications After (1)

Application Number Title Priority Date Filing Date
CA002580492A Expired - Fee Related CA2580492C (en) 1995-03-17 1996-03-04 Optical scanners having dual surface optical elements for dual working ranges

Country Status (4)

Country Link
US (3) US5988502A (en)
EP (2) EP1204068A3 (en)
CA (3) CA2580841C (en)
DE (1) DE69623202T2 (en)

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Also Published As

Publication number Publication date
EP1204068A2 (en) 2002-05-08
CA2580841C (en) 2008-08-05
US6220514B1 (en) 2001-04-24
DE69623202T2 (en) 2003-05-28
EP1204068A3 (en) 2003-02-19
EP0752680B1 (en) 2002-08-28
US5988502A (en) 1999-11-23
CA2580492A1 (en) 1996-09-18
CA2580492C (en) 2007-10-09
USRE40102E1 (en) 2008-02-26
CA2580841A1 (en) 1996-09-18
CA2170934C (en) 2007-06-19
EP0752680A1 (en) 1997-01-08
DE69623202D1 (en) 2002-10-02

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