HK1029180A1 - Planar patterns with superimposed diffraction grating - Google Patents
Planar patterns with superimposed diffraction gratingInfo
- 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
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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
- Laminated Bodies (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Credit Cards Or The Like (AREA)
- Optical Integrated Circuits (AREA)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9929752D0 (en) | 1999-12-17 | 2000-02-09 | Secr Defence | Textured surface |
US6870678B2 (en) | 2000-04-15 | 2005-03-22 | Ovd Kinegram Ag | Surface pattern |
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)
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 |
US5969863A (en) * | 1996-01-26 | 1999-10-19 | Electrowatt Technology Innovation Corp. | Surface pattern including light-diffracting relief structures |
-
1998
- 1998-01-27 CH CH00191/98A patent/CH693316A5/de not_active IP Right Cessation
-
1999
- 1999-01-21 AT AT99903666T patent/ATE237145T1/de active
- 1999-01-21 CA CA002319137A patent/CA2319137C/en not_active Expired - Fee Related
- 1999-01-21 DE DE59904949T patent/DE59904949D1/de not_active Expired - Lifetime
- 1999-01-21 WO PCT/EP1999/000388 patent/WO1999038039A1/de active IP Right Grant
- 1999-01-21 ES ES99903666T patent/ES2197612T3/es not_active Expired - Lifetime
- 1999-01-21 EP EP99903666A patent/EP1051648B1/de not_active Expired - Lifetime
-
2000
- 2000-12-28 HK HK00108484A patent/HK1029180A1/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
WO1999038039A1 (de) | 1999-07-29 |
ES2197612T3 (es) | 2004-01-01 |
CH693316A5 (de) | 2003-05-30 |
CA2319137A1 (en) | 1999-07-29 |
EP1051648B1 (de) | 2003-04-09 |
ATE237145T1 (de) | 2003-04-15 |
CA2319137C (en) | 2003-09-23 |
EP1051648A1 (de) | 2000-11-15 |
DE59904949D1 (de) | 2003-05-15 |
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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 |