CA2343264A1 - Diffuse surface illumination apparatus and methods - Google Patents

Diffuse surface illumination apparatus and methods Download PDF

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Publication number
CA2343264A1
CA2343264A1 CA002343264A CA2343264A CA2343264A1 CA 2343264 A1 CA2343264 A1 CA 2343264A1 CA 002343264 A CA002343264 A CA 002343264A CA 2343264 A CA2343264 A CA 2343264A CA 2343264 A1 CA2343264 A1 CA 2343264A1
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CA
Canada
Prior art keywords
illumination
target
illumination apparatus
hand
leds
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
CA002343264A
Other languages
French (fr)
Other versions
CA2343264C (en
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.)
Omron Microscan Systems 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 CA2343264A1 publication Critical patent/CA2343264A1/en
Application granted granted Critical
Publication of CA2343264C publication Critical patent/CA2343264C/en
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
    • 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 illumination apparatus (80) is provided for a hand-held imager (30) preferably to provide diffuse illumination for encoded symbology carried directly upon an article, component, etc., or upon a substrate carried by an article. The illumination apparatus (80) is disposed proximate the front of the hand-held imager (30) and is configured to permit light reflected from the target to pass through the illumination apparatus (80) and onto a CCD image receiver (60). An array of unlensed LEDs (114) is disposed to cast approximately or substantially lambertian illumination in a direction away from the target to be imaged and into the hand-held housing (32) to impinge upon surfaces of an illuminator (82) to receive the illumination and, in turn, project efficient and diffuse dark field illumination through the array of unlensed LEDs (114) and towards and onto a location where a target to be imaged would be disposed. The illumination apparatus (80) further includes a bright field illumination source (166) including a plurality of forward facing, towards the target, lensed LEDs (162).
CA002343264A 1998-09-11 1999-09-10 Diffuse surface illumination apparatus and methods Expired - Fee Related CA2343264C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/151,765 1998-09-11
US09/151,765 US6661521B1 (en) 1998-09-11 1998-09-11 Diffuse surface illumination apparatus and methods
PCT/US1999/018846 WO2000016073A1 (en) 1998-09-11 1999-09-10 Diffuse surface illumination apparatus and methods

Publications (2)

Publication Number Publication Date
CA2343264A1 true CA2343264A1 (en) 2000-03-23
CA2343264C CA2343264C (en) 2008-02-12

Family

ID=22540157

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002343264A Expired - Fee Related CA2343264C (en) 1998-09-11 1999-09-10 Diffuse surface illumination apparatus and methods

Country Status (9)

Country Link
US (1) US6661521B1 (en)
EP (1) EP1112483B1 (en)
JP (1) JP2002525644A (en)
AT (1) ATE327542T1 (en)
AU (1) AU6382599A (en)
CA (1) CA2343264C (en)
DE (1) DE69931503T2 (en)
IL (1) IL141921A0 (en)
WO (1) WO2000016073A1 (en)

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Also Published As

Publication number Publication date
AU6382599A (en) 2000-04-03
DE69931503D1 (en) 2006-06-29
WO2000016073A1 (en) 2000-03-23
EP1112483A4 (en) 2004-04-21
EP1112483B1 (en) 2006-05-24
IL141921A0 (en) 2002-03-10
CA2343264C (en) 2008-02-12
US6661521B1 (en) 2003-12-09
EP1112483A1 (en) 2001-07-04
DE69931503T2 (en) 2007-03-01
JP2002525644A (en) 2002-08-13
ATE327542T1 (en) 2006-06-15

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