SE436944B - Optisk lesanordning for dokument vilka innehaller information i form av optiska markeringar - Google Patents

Optisk lesanordning for dokument vilka innehaller information i form av optiska markeringar

Info

Publication number
SE436944B
SE436944B SE7902465A SE7902465A SE436944B SE 436944 B SE436944 B SE 436944B SE 7902465 A SE7902465 A SE 7902465A SE 7902465 A SE7902465 A SE 7902465A SE 436944 B SE436944 B SE 436944B
Authority
SE
Sweden
Prior art keywords
light sensor
light
reading device
optical
document
Prior art date
Application number
SE7902465A
Other languages
English (en)
Swedish (sv)
Other versions
SE7902465L (sv
Inventor
D L Greenaway
Original Assignee
Landis & Gyr Ag
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 Landis & Gyr Ag filed Critical Landis & Gyr Ag
Publication of SE7902465L publication Critical patent/SE7902465L/xx
Publication of SE436944B publication Critical patent/SE436944B/sv

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
    • G06K7/10821—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
    • G06K7/10831—Arrangement of optical elements, e.g. lenses, mirrors, prisms
    • 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
    • G06K19/16—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 a hologram or diffraction grating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S283/00—Printed matter
    • Y10S283/904—Credit card

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Toxicology (AREA)
  • Health & Medical Sciences (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
  • Character Input (AREA)
  • Holo Graphy (AREA)
  • Facsimile Scanning Arrangements (AREA)
SE7902465A 1978-03-20 1979-03-19 Optisk lesanordning for dokument vilka innehaller information i form av optiska markeringar SE436944B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH299578A CH622896A5 (de) 1978-03-20 1978-03-20

Publications (2)

Publication Number Publication Date
SE7902465L SE7902465L (sv) 1979-09-21
SE436944B true SE436944B (sv) 1985-01-28

Family

ID=4246279

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7902465A SE436944B (sv) 1978-03-20 1979-03-19 Optisk lesanordning for dokument vilka innehaller information i form av optiska markeringar

Country Status (10)

Country Link
US (1) US4250393A (de)
JP (1) JPS6046470B2 (de)
BE (1) BE874955A (de)
CH (1) CH622896A5 (de)
DE (1) DE2814890C2 (de)
ES (1) ES478763A1 (de)
FR (1) FR2420794B1 (de)
GB (1) GB2016775B (de)
IT (1) IT1111936B (de)
SE (1) SE436944B (de)

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US6219015B1 (en) * 1992-04-28 2001-04-17 The Board Of Directors Of The Leland Stanford, Junior University Method and apparatus for using an array of grating light valves to produce multicolor optical images
US5629801A (en) * 1995-06-07 1997-05-13 Silicon Light Machines Diffraction grating light doubling collection system
US5661592A (en) * 1995-06-07 1997-08-26 Silicon Light Machines Method of making and an apparatus for a flat diffraction grating light valve
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US6215579B1 (en) 1998-06-24 2001-04-10 Silicon Light Machines Method and apparatus for modulating an incident light beam for forming a two-dimensional image
US6303986B1 (en) * 1998-07-29 2001-10-16 Silicon Light Machines Method of and apparatus for sealing an hermetic lid to a semiconductor die
US6872984B1 (en) 1998-07-29 2005-03-29 Silicon Light Machines Corporation Method of sealing a hermetic lid to a semiconductor die at an angle
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US6956878B1 (en) 2000-02-07 2005-10-18 Silicon Light Machines Corporation Method and apparatus for reducing laser speckle using polarization averaging
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US7177081B2 (en) * 2001-03-08 2007-02-13 Silicon Light Machines Corporation High contrast grating light valve type device
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US6707591B2 (en) * 2001-04-10 2004-03-16 Silicon Light Machines Angled illumination for a single order light modulator based projection system
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US6747781B2 (en) * 2001-06-25 2004-06-08 Silicon Light Machines, Inc. Method, apparatus, and diffuser for reducing laser speckle
US6782205B2 (en) * 2001-06-25 2004-08-24 Silicon Light Machines Method and apparatus for dynamic equalization in wavelength division multiplexing
US6646778B2 (en) * 2001-08-01 2003-11-11 Silicon Light Machines Grating light valve with encapsulated dampening gas
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US6692129B2 (en) * 2001-11-30 2004-02-17 Silicon Light Machines Display apparatus including RGB color combiner and 1D light valve relay including schlieren filter
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Also Published As

Publication number Publication date
ES478763A1 (es) 1979-05-16
DE2814890B1 (de) 1978-12-07
CH622896A5 (de) 1981-04-30
DE2814890C2 (de) 1979-08-09
IT1111936B (it) 1986-01-13
BE874955A (fr) 1979-07-16
GB2016775B (en) 1982-03-17
IT7921053A0 (it) 1979-03-16
FR2420794B1 (fr) 1985-11-29
GB2016775A (en) 1979-09-26
FR2420794A1 (fr) 1979-10-19
SE7902465L (sv) 1979-09-21
US4250393A (en) 1981-02-10
JPS6046470B2 (ja) 1985-10-16
JPS54128221A (en) 1979-10-04

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