WO2006069723A3 - Method and device for producing a multi-channel diffraction pattern - Google Patents

Method and device for producing a multi-channel diffraction pattern Download PDF

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Publication number
WO2006069723A3
WO2006069723A3 PCT/EP2005/013833 EP2005013833W WO2006069723A3 WO 2006069723 A3 WO2006069723 A3 WO 2006069723A3 EP 2005013833 W EP2005013833 W EP 2005013833W WO 2006069723 A3 WO2006069723 A3 WO 2006069723A3
Authority
WO
WIPO (PCT)
Prior art keywords
channel
diffraction pattern
observation
laser
pattern
Prior art date
Application number
PCT/EP2005/013833
Other languages
German (de)
French (fr)
Other versions
WO2006069723A2 (en
Inventor
Thomas Maurer
Original Assignee
Giesecke & Devrient Gmbh
Thomas Maurer
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 Giesecke & Devrient Gmbh, Thomas Maurer filed Critical Giesecke & Devrient Gmbh
Priority to EP05825516A priority Critical patent/EP1831031A2/en
Publication of WO2006069723A2 publication Critical patent/WO2006069723A2/en
Publication of WO2006069723A3 publication Critical patent/WO2006069723A3/en

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
    • B42D25/328—Diffraction gratings; Holograms

Abstract

The invention relates to a method for producing a multi-channel diffraction pattern with additional information which is dependent upon the direction of observation, consisting of the following steps: a) provision of a multi-channel diffraction pattern (12) which reconstructs diffraction optical images in various directions of observation (L,R) according to specific conditions of observation, and wherein the diffraction optical information (20, 22) for the various directions of observation (L, R) is stored in various image areas (24,26) of the diffraction pattern (12) associated with the respective channel, and b) additional information (30,32) which is dependent upon the direction of observation is inscribed with the aid of at least one laser writing beam of a writing laser into at least one channel of the multi-channel diffraction pattern (12) by local (34, 36) laser-induced modification of the optical characteristics of the diffraction pattern (12) in the areas of the pattern (24, 26) that are associated with the channel which is to be inscribed with additional information, wherein c) recognition of the areas of the pattern (24, 26) associated with the channel that is to be inscribed is carried out by a recognizing laser beam in the beam path of the writing laser.
PCT/EP2005/013833 2004-12-23 2005-12-22 Method and device for producing a multi-channel diffraction pattern WO2006069723A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05825516A EP1831031A2 (en) 2004-12-23 2005-12-22 Method and device for producing a multi-channel diffraction pattern

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004063376.2 2004-12-23
DE200410063376 DE102004063376A1 (en) 2004-12-23 2004-12-23 Method and device for generating a multi-channel diffraction image

Publications (2)

Publication Number Publication Date
WO2006069723A2 WO2006069723A2 (en) 2006-07-06
WO2006069723A3 true WO2006069723A3 (en) 2006-08-24

Family

ID=36571963

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/013833 WO2006069723A2 (en) 2004-12-23 2005-12-22 Method and device for producing a multi-channel diffraction pattern

Country Status (3)

Country Link
EP (1) EP1831031A2 (en)
DE (1) DE102004063376A1 (en)
WO (1) WO2006069723A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2514993C1 (en) * 2012-12-25 2014-05-10 Федеральное Государственное Унитарное Предприятие "Гознак" (Фгуп "Гознак") Method of inspecting paper and apparatus therefor (versions)
DE102020000104A1 (en) 2020-01-10 2021-07-15 Giesecke+Devrient Currency Technology Gmbh Production of an embossing tool and embossed security elements

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5101184A (en) * 1988-09-30 1992-03-31 Lgz Landis & Gyr Zug Ag Diffraction element and optical machine-reading device
DE4131964A1 (en) * 1991-09-25 1993-04-08 Holtronic Gmbh Inscribing hologram with markings - using laser beam to produce localised breakdown in transparent metallised foil in hologram
EP1197350A2 (en) * 2000-10-12 2002-04-17 HSM Holographic Systems München GmbH Optical characteristic, particularly for security documents, and method for supplementary personalising or data storage
WO2005009751A2 (en) * 2003-07-22 2005-02-03 Giesecke & Devrient Gmbh Security element

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5101184A (en) * 1988-09-30 1992-03-31 Lgz Landis & Gyr Zug Ag Diffraction element and optical machine-reading device
DE4131964A1 (en) * 1991-09-25 1993-04-08 Holtronic Gmbh Inscribing hologram with markings - using laser beam to produce localised breakdown in transparent metallised foil in hologram
EP1197350A2 (en) * 2000-10-12 2002-04-17 HSM Holographic Systems München GmbH Optical characteristic, particularly for security documents, and method for supplementary personalising or data storage
WO2005009751A2 (en) * 2003-07-22 2005-02-03 Giesecke & Devrient Gmbh Security element

Also Published As

Publication number Publication date
EP1831031A2 (en) 2007-09-12
DE102004063376A1 (en) 2006-07-06
WO2006069723A2 (en) 2006-07-06

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