AU2018274706A1 - Security device and method - Google Patents

Security device and method Download PDF

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Publication number
AU2018274706A1
AU2018274706A1 AU2018274706A AU2018274706A AU2018274706A1 AU 2018274706 A1 AU2018274706 A1 AU 2018274706A1 AU 2018274706 A AU2018274706 A AU 2018274706A AU 2018274706 A AU2018274706 A AU 2018274706A AU 2018274706 A1 AU2018274706 A1 AU 2018274706A1
Authority
AU
Australia
Prior art keywords
phase
light
optical waveguide
predefined
incident beam
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.)
Abandoned
Application number
AU2018274706A
Inventor
Lawrence George Commander
Adam Lister
Robert Whiteman
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.)
De la Rue International Ltd
Original Assignee
De la Rue International Ltd
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 De la Rue International Ltd filed Critical De la Rue International Ltd
Publication of AU2018274706A1 publication Critical patent/AU2018274706A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • 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
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • 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
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/324—Reliefs
    • 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
    • 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
    • B42D25/415—Marking using chemicals
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/002—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of materials engineered to provide properties not available in nature, e.g. metamaterials

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Optical Integrated Circuits (AREA)

Abstract

A security device comprises a metastructured optical element formed from a support structure and a predefined array of discrete phase-shifting optical waveguide structures that are connected to or located within the support structure. The predefined array is arranged to interact with an incident beam of light having a target wavelength in free space. Each phase-shifting optical waveguide structure has a predefined geometry for causing a respective phase-shift in the incident beam of light. The predefined geometry is such that at least one maximum dimension of the respective phase-shifting optical waveguide structure in a cross-array direction is less than the target wavelength. The metastructured optical element is transmissive to the incident beam of light and the combination of the phase-shifts in the light resulting from the interaction with the phase-shifting optical waveguide structure causes the focusing of the light. Methods of forming such security devices are also provided.
AU2018274706A 2017-05-26 2018-05-23 Security device and method Abandoned AU2018274706A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB1708492.2 2017-05-26
GB1708492.2A GB2562797A (en) 2017-05-26 2017-05-26 Security device and method
PCT/GB2018/051409 WO2018215774A1 (en) 2017-05-26 2018-05-23 Security device and method

Publications (1)

Publication Number Publication Date
AU2018274706A1 true AU2018274706A1 (en) 2019-12-12

Family

ID=59271012

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2018274706A Abandoned AU2018274706A1 (en) 2017-05-26 2018-05-23 Security device and method

Country Status (4)

Country Link
EP (1) EP3630501A1 (en)
AU (1) AU2018274706A1 (en)
GB (1) GB2562797A (en)
WO (1) WO2018215774A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11263856B2 (en) 2017-03-01 2022-03-01 Spectra Systems Corporation Coded polymer substrates for banknote authentication
EP3590073A4 (en) 2017-03-01 2021-01-06 Spectra Systems Corporation Coded polymer substrates for banknote authentication
CN114867613B (en) * 2019-12-03 2024-04-02 光谱系统公司 Coded polymeric substrate for banknote authentication
US11536907B2 (en) 2021-04-21 2022-12-27 X Development Llc Cascaded integrated photonic wavelength demultiplexer
US11962351B2 (en) 2021-12-01 2024-04-16 X Development Llc Multilayer photonic devices with metastructured layers
WO2023174664A1 (en) * 2022-03-18 2023-09-21 Meta Materials Inc. Devices, methods and a visual display involving metamaterial filters

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9309673D0 (en) 1993-05-11 1993-06-23 De La Rue Holographics Ltd Security device
ES2946765T3 (en) 2003-11-21 2023-07-25 Visual Physics Llc Micro-optical security and image presentation system
GB201003397D0 (en) 2010-03-01 2010-04-14 Rue De Int Ltd Moire magnification security device
WO2013033591A1 (en) * 2011-08-31 2013-03-07 President And Fellows Of Harvard College Amplitude, phase and polarization plate for photonics
DE112016003353T5 (en) * 2015-08-18 2018-04-05 Ccl Secure Pty Ltd Optical device with an optical array
EP3825738A3 (en) * 2015-09-23 2021-08-25 OSRAM Opto Semiconductors GmbH Collimating metalenses and technologies incorporating the same

Also Published As

Publication number Publication date
EP3630501A1 (en) 2020-04-08
WO2018215774A1 (en) 2018-11-29
GB201708492D0 (en) 2017-07-12
GB2562797A (en) 2018-11-28

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Legal Events

Date Code Title Description
MK1 Application lapsed section 142(2)(a) - no request for examination in relevant period