CA2543790A1 - Structure d'image a protection contre le brouillage - Google Patents

Structure d'image a protection contre le brouillage Download PDF

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Publication number
CA2543790A1
CA2543790A1 CA 2543790 CA2543790A CA2543790A1 CA 2543790 A1 CA2543790 A1 CA 2543790A1 CA 2543790 CA2543790 CA 2543790 CA 2543790 A CA2543790 A CA 2543790A CA 2543790 A1 CA2543790 A1 CA 2543790A1
Authority
CA
Canada
Prior art keywords
layers
filter
metameric
angle
observation
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
CA 2543790
Other languages
English (en)
Other versions
CA2543790C (fr
Inventor
Baloukas Bill
Martinu Ludvik
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.)
Ecole Polytechnique de Montreal
Original Assignee
Ecole Polytechnique de Montreal
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 Ecole Polytechnique de Montreal filed Critical Ecole Polytechnique de Montreal
Priority to CA2543790A priority Critical patent/CA2543790C/fr
Publication of CA2543790A1 publication Critical patent/CA2543790A1/fr
Application granted granted Critical
Publication of CA2543790C publication Critical patent/CA2543790C/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/28—Interference filters
    • G02B5/285—Interference filters comprising deposited thin solid films
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/28—Interference filters
    • 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
    • B42D2035/24—

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Filters (AREA)
CA2543790A 2006-04-24 2006-04-24 Structure d'image a protection contre le brouillage Expired - Fee Related CA2543790C (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2543790A CA2543790C (fr) 2006-04-24 2006-04-24 Structure d'image a protection contre le brouillage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA2543790A CA2543790C (fr) 2006-04-24 2006-04-24 Structure d'image a protection contre le brouillage

Publications (2)

Publication Number Publication Date
CA2543790A1 true CA2543790A1 (fr) 2007-10-24
CA2543790C CA2543790C (fr) 2014-03-04

Family

ID=38621067

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2543790A Expired - Fee Related CA2543790C (fr) 2006-04-24 2006-04-24 Structure d'image a protection contre le brouillage

Country Status (1)

Country Link
CA (1) CA2543790C (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011150523A1 (fr) * 2010-06-04 2011-12-08 Corporation De L'ecole Polytechnique De Montreal Dispositifs de sécurité métamériques employant une matière active

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3087385B1 (fr) 2018-10-19 2021-03-12 Surys Film de securite et document securise au moyen d'un film de securite

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011150523A1 (fr) * 2010-06-04 2011-12-08 Corporation De L'ecole Polytechnique De Montreal Dispositifs de sécurité métamériques employant une matière active
US10011140B2 (en) 2010-06-04 2018-07-03 Polyvalor, Limited Partnership Metameric security devices using an active material

Also Published As

Publication number Publication date
CA2543790C (fr) 2014-03-04

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Effective date: 20210426