CA2406616C - Lecteur optique a fibre optique equipee d'un diffuseur - Google Patents

Lecteur optique a fibre optique equipee d'un diffuseur Download PDF

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Publication number
CA2406616C
CA2406616C CA2406616A CA2406616A CA2406616C CA 2406616 C CA2406616 C CA 2406616C CA 2406616 A CA2406616 A CA 2406616A CA 2406616 A CA2406616 A CA 2406616A CA 2406616 C CA2406616 C CA 2406616C
Authority
CA
Canada
Prior art keywords
light
diffuser
reflective
variable diffuser
detector array
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.)
Expired - Fee Related
Application number
CA2406616A
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English (en)
Other versions
CA2406616A1 (fr
Inventor
Gajendra D. Savant
Abbas Hosseini
Rick L. Shie
San Zhuang Wang
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.)
Individual
Original Assignee
Asahi Kasei Corp
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 Asahi Kasei Corp filed Critical Asahi Kasei Corp
Priority to CA2708355A priority Critical patent/CA2708355C/fr
Publication of CA2406616A1 publication Critical patent/CA2406616A1/fr
Application granted granted Critical
Publication of CA2406616C publication Critical patent/CA2406616C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • 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)
  • General Health & Medical Sciences (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Health & Medical Sciences (AREA)
  • Theoretical Computer Science (AREA)
  • Toxicology (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Planar Illumination Modules (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Holo Graphy (AREA)
  • Credit Cards Or The Like (AREA)
  • Mechanical Optical Scanning Systems (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)

Abstract

La présente invention concerne un lecteur optique comportant une source de lumière (3810) émettant la lumière via une fibre optique (3820) en direction d'une matrice de détection. La fibre optique comporte une surface réfléchissante (3822) et un diffuseur (3824). La surface réfléchissante renvoie la lumière (3815), directement ou indirectement, en direction du diffuseur, lequel diffuse la lumière en sortie de la fibre optique. La fibre optique comporte en outre une rainure réfléchissante renvoyant la lumière vers le diffuseur en direction de la surface réfléchissante. Le diffuseur diffuse la lumière en direction d'un objet qui renvoie la lumière sur la matrice de détection. L'objet considéré est notamment un code à barres, du papier monnaie, ou tout autre objet à passer au lecteur optique. Le diffuseur peut être un diffuseur variable.
CA2406616A 2000-03-02 2001-02-27 Lecteur optique a fibre optique equipee d'un diffuseur Expired - Fee Related CA2406616C (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2708355A CA2708355C (fr) 2000-03-02 2001-02-27 Lecteur optique a fibre optique equipee d'un diffuseur

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US51724000A 2000-03-02 2000-03-02
US09/517,240 2000-03-02
PCT/US2001/006399 WO2001065469A1 (fr) 2000-03-02 2001-02-27 Lecteur optique a fibre optique equipee d'un diffuseur

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA2708355A Division CA2708355C (fr) 2000-03-02 2001-02-27 Lecteur optique a fibre optique equipee d'un diffuseur

Publications (2)

Publication Number Publication Date
CA2406616A1 CA2406616A1 (fr) 2001-09-07
CA2406616C true CA2406616C (fr) 2010-09-28

Family

ID=24058972

Family Applications (2)

Application Number Title Priority Date Filing Date
CA2708355A Expired - Fee Related CA2708355C (fr) 2000-03-02 2001-02-27 Lecteur optique a fibre optique equipee d'un diffuseur
CA2406616A Expired - Fee Related CA2406616C (fr) 2000-03-02 2001-02-27 Lecteur optique a fibre optique equipee d'un diffuseur

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA2708355A Expired - Fee Related CA2708355C (fr) 2000-03-02 2001-02-27 Lecteur optique a fibre optique equipee d'un diffuseur

Country Status (8)

Country Link
EP (1) EP1266342A4 (fr)
JP (1) JP2003525472A (fr)
KR (1) KR100933386B1 (fr)
CN (1) CN1327383C (fr)
AU (1) AU2001238715A1 (fr)
CA (2) CA2708355C (fr)
TW (1) TW501359B (fr)
WO (1) WO2001065469A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1328610C (zh) 2001-08-06 2007-07-25 Mei公司 票据验证装置组件
US7604174B2 (en) 2003-10-24 2009-10-20 Cognex Technology And Investment Corporation Method and apparatus for providing omnidirectional lighting in a scanning device
US7823789B2 (en) 2004-12-21 2010-11-02 Cognex Technology And Investment Corporation Low profile illumination for direct part mark readers
US7823783B2 (en) 2003-10-24 2010-11-02 Cognex Technology And Investment Corporation Light pipe illumination system and method
US7874487B2 (en) 2005-10-24 2011-01-25 Cognex Technology And Investment Corporation Integrated illumination assembly for symbology reader
US9536124B1 (en) 2003-10-24 2017-01-03 Cognex Corporation Integrated illumination assembly for symbology reader
US9070031B2 (en) 2003-10-24 2015-06-30 Cognex Technology And Investment Llc Integrated illumination assembly for symbology reader
JP2007526579A (ja) * 2004-03-02 2007-09-13 シンボル テクノロジーズ インコーポレイテッド 反射表面上にインプリントされた又は表示された光学コードを読み取るためのシステム及び方法
US7163149B2 (en) 2004-03-02 2007-01-16 Symbol Technologies, Inc. System and method for illuminating and reading optical codes imprinted or displayed on reflective surfaces
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
KR20060129117A (ko) 2005-06-10 2006-12-15 삼성전자주식회사 바코드를 이용하는 전자레인지의 제어장치 및 방법
EP2478462A1 (fr) * 2009-09-17 2012-07-25 Roche Diagnostics GmbH Codes à barres à haute densité pour consommables médicaux
US8450708B2 (en) 2010-06-02 2013-05-28 Symbol Technologies, Inc. Arrangement for and method of generating uniform distributed illumination pattern for imaging reader
CN101893759B (zh) * 2010-07-14 2012-07-11 世大光电(深圳)有限公司 光学监测系统及具有该光学监测系统的电子装置
CN102122000A (zh) * 2010-12-16 2011-07-13 山东新北洋信息技术股份有限公司 薄片类介质检测装置及薄片类介质处理装置
CN102865999B (zh) * 2011-07-08 2015-03-04 中国科学院微电子研究所 Led光学特性检测方法及检测装置
US8876006B2 (en) 2012-10-25 2014-11-04 Symbol Technologies, Inc. Compact imaging module with adjustable aiming pattern and arrangement for and method of spatially adjusting the aiming pattern
CN103279729B (zh) * 2013-05-21 2016-01-20 苏州斯普锐智能系统有限公司 一种具有遮光零件的条码扫描器
CN105022979B (zh) * 2015-07-27 2018-01-16 深圳市民德电子科技股份有限公司 成像系统与补光系统光轴呈夹角设置的图像识读设备
US10502618B2 (en) * 2016-12-03 2019-12-10 Waymo Llc Waveguide diffuser for light detection using an aperture
US11003875B2 (en) * 2018-11-01 2021-05-11 Cognex Corporation Handheld ID-reading system with integrated illumination assembly
US11120236B1 (en) * 2020-02-27 2021-09-14 Zebra Technologies Corporation Optical arrangement in machine vision system with diffusive and direct illumination for DPM indicia
US12060991B1 (en) 2023-11-17 2024-08-13 Brady Worldwide, Inc. Light pipe with uniform and segmented light outputs for barcode-reading devices

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58168076A (ja) * 1982-03-30 1983-10-04 Fujitsu Ltd 位相型ホログラムの作成方法
CA1268969A (fr) * 1986-01-15 1990-05-15 Sanford Cobb, Jr. Guide de lumiere a reflexion interne totale
US4787688A (en) * 1987-09-28 1988-11-29 Eastman Kodak Company Hologon and method of manufacturing a hologon
EP0479490A3 (en) 1990-10-02 1992-08-12 Physical Optics Corporation Volume holographic diffuser
US5756981A (en) * 1992-02-27 1998-05-26 Symbol Technologies, Inc. Optical scanner for reading and decoding one- and-two-dimensional symbologies at variable depths of field including memory efficient high speed image processing means and high accuracy image analysis means
US5586212A (en) * 1994-07-06 1996-12-17 Hewlett-Packard Optical wave guide for hand-held scanner
US5770847A (en) 1994-12-23 1998-06-23 Spectra-Physics Scanning Systems, Inc. Bar code reader with multi-focus lens
US5838403A (en) * 1996-02-14 1998-11-17 Physical Optics Corporation Liquid crystal display system with internally reflecting waveguide for backlighting and non-Lambertian diffusing
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JPH10190956A (ja) * 1996-12-24 1998-07-21 Rohm Co Ltd 線状光源装置、これに用いる導光部材、およびこの導光部材を用いた線状光源を備える画像読み取り装置
GB9724781D0 (en) * 1997-11-24 1998-01-21 Ncr Int Inc Visual displays
JPH11242120A (ja) * 1998-02-25 1999-09-07 Sharp Corp 要素ホログラムパネル及び該要素ホログラムパネルを用いた再生像生成装置
JP2000261865A (ja) * 1999-03-04 2000-09-22 Koito Ind Ltd 洗浄装置の遠隔操作装置
JP2001033851A (ja) * 1999-07-21 2001-02-09 Olympus Optical Co Ltd ストロボ装置

Also Published As

Publication number Publication date
TW501359B (en) 2002-09-01
WO2001065469A1 (fr) 2001-09-07
EP1266342A1 (fr) 2002-12-18
CA2708355A1 (fr) 2001-09-07
KR100933386B1 (ko) 2009-12-22
KR20020081382A (ko) 2002-10-26
EP1266342A4 (fr) 2005-03-30
AU2001238715A1 (en) 2001-09-12
CA2406616A1 (fr) 2001-09-07
JP2003525472A (ja) 2003-08-26
CN1426570A (zh) 2003-06-25
CN1327383C (zh) 2007-07-18
CA2708355C (fr) 2012-05-29

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Effective date: 20150227