CA2599246C - Surfaces de diffraction avec arriere-plans a changement de couleur - Google Patents

Surfaces de diffraction avec arriere-plans a changement de couleur Download PDF

Info

Publication number
CA2599246C
CA2599246C CA2599246A CA2599246A CA2599246C CA 2599246 C CA2599246 C CA 2599246C CA 2599246 A CA2599246 A CA 2599246A CA 2599246 A CA2599246 A CA 2599246A CA 2599246 C CA2599246 C CA 2599246C
Authority
CA
Canada
Prior art keywords
layer
security article
substrate
color shifting
color
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.)
Expired - Lifetime
Application number
CA2599246A
Other languages
English (en)
Other versions
CA2599246A1 (fr
Inventor
Roger Phillips
Richard L. Bonkowski
Patrick K. Higgins
Charles T. Markantes
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.)
Viavi Solutions Inc
Original Assignee
JDS Uniphase Corp
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 JDS Uniphase Corp filed Critical JDS Uniphase Corp
Priority to CA2599246A priority Critical patent/CA2599246C/fr
Priority claimed from CA2378502A external-priority patent/CA2378502C/fr
Publication of CA2599246A1 publication Critical patent/CA2599246A1/fr
Application granted granted Critical
Publication of CA2599246C publication Critical patent/CA2599246C/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • G02B5/286—Interference filters comprising deposited thin solid films having four or fewer layers, e.g. for achieving a colour effect
    • 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
    • B42D25/328—Diffraction gratings; Holograms
    • 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
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29—Securities; Bank notes
    • 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
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D2035/24—
CA2599246A 2000-04-21 2000-04-21 Surfaces de diffraction avec arriere-plans a changement de couleur Expired - Lifetime CA2599246C (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2599246A CA2599246C (fr) 2000-04-21 2000-04-21 Surfaces de diffraction avec arriere-plans a changement de couleur

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA2378502A CA2378502C (fr) 1999-07-08 2000-04-21 Surfaces de diffraction avec arriere-plans a changement de couleur
CA2599246A CA2599246C (fr) 2000-04-21 2000-04-21 Surfaces de diffraction avec arriere-plans a changement de couleur

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA2378502A Division CA2378502C (fr) 1999-07-08 2000-04-21 Surfaces de diffraction avec arriere-plans a changement de couleur

Publications (2)

Publication Number Publication Date
CA2599246A1 CA2599246A1 (fr) 2001-01-18
CA2599246C true CA2599246C (fr) 2011-03-15

Family

ID=38719461

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2599246A Expired - Lifetime CA2599246C (fr) 2000-04-21 2000-04-21 Surfaces de diffraction avec arriere-plans a changement de couleur

Country Status (1)

Country Link
CA (1) CA2599246C (fr)

Also Published As

Publication number Publication date
CA2599246A1 (fr) 2001-01-18

Similar Documents

Publication Publication Date Title
AU770682B2 (en) Diffractive surfaces with color shifting backgrounds
EP1849620B1 (fr) Dispositifs de sécurité optiquement variables
EP1664939B1 (fr) Micro-structures optiques réfléchissantes pourvues d'un motif
AU2001211949A1 (en) Optically variable security devices
CA2599246C (fr) Surfaces de diffraction avec arriere-plans a changement de couleur
AU2005200844B2 (en) Optically variable security devices
CA2604098C (fr) Dispositifs de securite variables du point de vue optique

Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20200421