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GB0304223D0 - Random micro-lens array - Google Patents

Random micro-lens array

Info

Publication number
GB0304223D0
GB0304223D0 GBGB0304223.1A GB0304223A GB0304223D0 GB 0304223 D0 GB0304223 D0 GB 0304223D0 GB 0304223 A GB0304223 A GB 0304223A GB 0304223 D0 GB0304223 D0 GB 0304223D0
Authority
GB
United Kingdom
Prior art keywords
lens array
random micro
micro
random
lens
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.)
Withdrawn
Application number
GBGB0304223.1A
Other versions
GB2398759A (en
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.)
University of Sheffield
Sheffield Hallam University
Original Assignee
University of Sheffield
Sheffield Hallam University
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 University of Sheffield, Sheffield Hallam University filed Critical University of Sheffield
Priority to GB0304223A priority Critical patent/GB2398759A/en
Publication of GB0304223D0 publication Critical patent/GB0304223D0/en
Publication of GB2398759A publication Critical patent/GB2398759A/en
Withdrawn legal-status Critical Current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
    • G06K19/083—Constructional details
    • G06K19/086—Constructional details with markings consisting of randomly placed or oriented elements, the randomness of the elements being useable for generating a unique identifying signature of the record carrier, e.g. randomly placed magnetic fibers or magnetic particles in the body of a credit card
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/43—Marking by removal of material
    • B42D25/445—Marking by removal of material using chemical means, e.g. etching
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/004—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using digital security elements, e.g. information coded on a magnetic thread or strip
    • G07D7/0047—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using digital security elements, e.g. information coded on a magnetic thread or strip using checkcodes, e.g. coded numbers derived from serial number and denomination
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
    • G07D7/12—Visible light, infrared or ultraviolet radiation
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/20—Testing patterns thereon
    • G07D7/202—Testing patterns thereon using pattern matching
    • G07D7/206—Matching template patterns
    • B42D2035/44—

Landscapes

  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Image Input (AREA)
GB0304223A 2003-02-25 2003-02-25 An identification system using a random array of micro-lenses Withdrawn GB2398759A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0304223A GB2398759A (en) 2003-02-25 2003-02-25 An identification system using a random array of micro-lenses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0304223A GB2398759A (en) 2003-02-25 2003-02-25 An identification system using a random array of micro-lenses

Publications (2)

Publication Number Publication Date
GB0304223D0 true GB0304223D0 (en) 2003-03-26
GB2398759A GB2398759A (en) 2004-09-01

Family

ID=9953576

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0304223A Withdrawn GB2398759A (en) 2003-02-25 2003-02-25 An identification system using a random array of micro-lenses

Country Status (1)

Country Link
GB (1) GB2398759A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114114508A (en) * 2020-08-31 2022-03-01 宁波激智科技股份有限公司 Polarization-maintaining optical film, anti-adsorption polarization-maintaining micro-lens film and preparation method thereof

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1990779B1 (en) * 2007-05-07 2016-09-14 CSEM Centre Suisse d'Electronique et de Microtechnique SA - Recherche et Développement Security device for the identification or authentication of goods and method for securing goods using such a security device
MX2015007822A (en) * 2012-12-20 2015-08-20 Sicpa Holding Sa Chiral liquid crystal polymer layer or pattern comprising randomly distributed craters therein.
FR3011970A1 (en) * 2013-10-11 2015-04-17 Centre Nat Rech Scient METHOD AND DEVICE FOR AUTHENTICATING A PRODUCT
JP7671749B2 (en) * 2019-12-20 2025-05-02 ジェイティー インターナショナル エスエイ Aerosol generating system and device having a waveguide arrangement for authenticating an aerosol product - Patents.com

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001074918A (en) * 1999-09-02 2001-03-23 Fuji Photo Film Co Ltd Light diffusing body and its production
KR100933117B1 (en) * 2001-02-07 2009-12-21 코닝 인코포레이티드 Screen and Screen Manufacturing Method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114114508A (en) * 2020-08-31 2022-03-01 宁波激智科技股份有限公司 Polarization-maintaining optical film, anti-adsorption polarization-maintaining micro-lens film and preparation method thereof
CN114114508B (en) * 2020-08-31 2023-06-02 宁波激智科技股份有限公司 Polarization-preserving optical film, anti-adsorption polarization-preserving micro-lens film and preparation method thereof

Also Published As

Publication number Publication date
GB2398759A (en) 2004-09-01

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)