HK1029180A1 - Planar patterns with superimposed diffraction grating - Google Patents

Planar patterns with superimposed diffraction grating

Info

Publication number
HK1029180A1
HK1029180A1 HK00108484A HK00108484A HK1029180A1 HK 1029180 A1 HK1029180 A1 HK 1029180A1 HK 00108484 A HK00108484 A HK 00108484A HK 00108484 A HK00108484 A HK 00108484A HK 1029180 A1 HK1029180 A1 HK 1029180A1
Authority
HK
Hong Kong
Prior art keywords
diffraction grating
visible light
elements
microscopically small
pattern
Prior art date
Application number
HK00108484A
Other languages
English (en)
Inventor
Rene Staub
Wayne Robert Tompkin
Original Assignee
Ovd Kinegram Ag
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 Ovd Kinegram Ag filed Critical Ovd Kinegram Ag
Publication of HK1029180A1 publication Critical patent/HK1029180A1/xx

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1842—Gratings for image generation
    • 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
    • G06K19/10—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 at least one kind of marking being used for authentication, e.g. of credit or identity cards
    • G06K19/16—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 at least one kind of marking being used for authentication, e.g. of credit or identity cards the marking being a hologram or diffraction grating
    • 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
HK00108484A 1998-01-27 2000-12-28 Planar patterns with superimposed diffraction grating HK1029180A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH00191/98A CH693316A5 (de) 1998-01-27 1998-01-27 Flächenmuster mit überlagerten Beugungsgittern.
PCT/EP1999/000388 WO1999038039A1 (de) 1998-01-27 1999-01-21 Flächenmuster mit überlagerten beugungsgittern

Publications (1)

Publication Number Publication Date
HK1029180A1 true HK1029180A1 (en) 2001-03-23

Family

ID=4181330

Family Applications (1)

Application Number Title Priority Date Filing Date
HK00108484A HK1029180A1 (en) 1998-01-27 2000-12-28 Planar patterns with superimposed diffraction grating

Country Status (8)

Country Link
EP (1) EP1051648B1 (xx)
AT (1) ATE237145T1 (xx)
CA (1) CA2319137C (xx)
CH (1) CH693316A5 (xx)
DE (1) DE59904949D1 (xx)
ES (1) ES2197612T3 (xx)
HK (1) HK1029180A1 (xx)
WO (1) WO1999038039A1 (xx)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9929752D0 (en) * 1999-12-17 2000-02-09 Secr Defence Textured surface
BR0110078B1 (pt) 2000-04-15 2014-04-29 Ovd Kinegram Ag Padrão superficial
DE10127981C1 (de) * 2001-06-08 2003-01-16 Ovd Kinegram Ag Zug Diffraktives Sicherheitselement
DE10129938B4 (de) * 2001-06-20 2005-05-25 Ovd Kinegram Ag Als Echtheitsmerkmal auf einem Dokument angeordnetes optisch variables Flächenmuster
DE10216563B4 (de) * 2002-04-05 2016-08-04 Ovd Kinegram Ag Sicherheitselement als Photokopierschutz
DE102004003984A1 (de) † 2004-01-26 2005-08-11 Giesecke & Devrient Gmbh Gitterbild mit einem oder mehreren Gitterfeldern

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4155627A (en) * 1976-02-02 1979-05-22 Rca Corporation Color diffractive subtractive filter master recording comprising a plurality of superposed two-level relief patterns on the surface of a substrate
WO1997027504A1 (en) * 1996-01-26 1997-07-31 Landis & Gyr Technology Innovation Ag Surface pattern

Also Published As

Publication number Publication date
WO1999038039A1 (de) 1999-07-29
CA2319137C (en) 2003-09-23
EP1051648A1 (de) 2000-11-15
CA2319137A1 (en) 1999-07-29
ATE237145T1 (de) 2003-04-15
DE59904949D1 (de) 2003-05-15
ES2197612T3 (es) 2004-01-01
CH693316A5 (de) 2003-05-30
EP1051648B1 (de) 2003-04-09

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Legal Events

Date Code Title Description
PF Patent in force
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20100121