CA3204614A1 - Optical devices and methods of manufacture thereof - Google Patents

Optical devices and methods of manufacture thereof Download PDF

Info

Publication number
CA3204614A1
CA3204614A1 CA3204614A CA3204614A CA3204614A1 CA 3204614 A1 CA3204614 A1 CA 3204614A1 CA 3204614 A CA3204614 A CA 3204614A CA 3204614 A CA3204614 A CA 3204614A CA 3204614 A1 CA3204614 A1 CA 3204614A1
Authority
CA
Canada
Prior art keywords
diffractive
kinoform
region
image
diffractive region
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.)
Pending
Application number
CA3204614A
Other languages
English (en)
French (fr)
Inventor
Brian Holmes
Frederic Fournier
Maria KING
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.)
De la Rue International Ltd
Original Assignee
De la Rue International Ltd
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 De la Rue International Ltd filed Critical De la Rue International Ltd
Publication of CA3204614A1 publication Critical patent/CA3204614A1/en
Pending legal-status Critical Current

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
    • 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
    • B42D25/324—Reliefs
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/04—Processes or apparatus for producing holograms
    • G03H1/08—Synthesising holograms, i.e. holograms synthesized from objects or objects from holograms
    • G03H1/0841—Encoding method mapping the synthesized field into a restricted set of values representative of the modulator parameters, e.g. detour phase coding
    • 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
    • B42D25/351—Translucent or partly translucent parts, e.g. windows
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/04—Processes or apparatus for producing holograms
    • G03H1/08—Synthesising holograms, i.e. holograms synthesized from objects or objects from holograms
    • G03H1/0841—Encoding method mapping the synthesized field into a restricted set of values representative of the modulator parameters, e.g. detour phase coding
    • G03H2001/085—Kinoform, i.e. phase only encoding wherein the computed field is processed into a distribution of phase differences

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
  • Glass Compositions (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Optical Integrated Circuits (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Credit Cards Or The Like (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
CA3204614A 2021-01-11 2022-01-11 Optical devices and methods of manufacture thereof Pending CA3204614A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB2100327.2A GB2602796B (en) 2021-01-11 2021-01-11 Optical devices and methods of manufacture thereof
GB2100327.2 2021-01-11
PCT/GB2022/050049 WO2022148977A1 (en) 2021-01-11 2022-01-11 Optical devices and methods of manufacture thereof

Publications (1)

Publication Number Publication Date
CA3204614A1 true CA3204614A1 (en) 2022-07-14

Family

ID=74667662

Family Applications (1)

Application Number Title Priority Date Filing Date
CA3204614A Pending CA3204614A1 (en) 2021-01-11 2022-01-11 Optical devices and methods of manufacture thereof

Country Status (7)

Country Link
US (1) US12240261B2 (https=)
EP (1) EP4274742A1 (https=)
JP (1) JP2024502477A (https=)
AU (1) AU2022206102A1 (https=)
CA (1) CA3204614A1 (https=)
GB (1) GB2602796B (https=)
WO (1) WO2022148977A1 (https=)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025183578A1 (en) * 2024-03-01 2025-09-04 Polska Wytwornia Papierow Wartosciowych S.A. Security feature and security feature carrier.

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IN157644B (https=) 1981-02-19 1986-05-10 Portals Ltd
NZ201691A (en) 1981-08-24 1985-08-30 Commw Scient Ind Res Org Security token made from bi-axially oriented polymeric film
JPH06317764A (ja) * 1993-04-27 1994-11-15 Olympus Optical Co Ltd 光学的ローパスフィルター
DE4314380B4 (de) 1993-05-01 2009-08-06 Giesecke & Devrient Gmbh Sicherheitspapier und Verfahren zu seiner Herstellung
AT401365B (de) 1993-10-11 1996-08-26 Oesterr Nationalbank Wertpapier
DE4334847A1 (de) 1993-10-13 1995-04-20 Kurz Leonhard Fa Wertdokument mit Fenster
US5886798A (en) * 1995-08-21 1999-03-23 Landis & Gyr Technology Innovation Ag Information carriers with diffraction structures
GB9828770D0 (en) 1998-12-29 1999-02-17 Rue De Int Ltd Security paper
DE10163381A1 (de) 2001-12-21 2003-07-03 Giesecke & Devrient Gmbh Sicherheitspapier sowie Verfahren und Vorrichtung zu seiner Herstellung
GB2388377B (en) 2002-05-09 2004-07-28 Rue De Int Ltd A paper sheet incorporating a security element and a method of making the same
EP1398174A1 (en) 2002-09-10 2004-03-17 Kba-Giori S.A. Reinforced substrate for securities
DE102006016139A1 (de) * 2006-04-06 2007-10-18 Ovd Kinegram Ag Mehrschichtkörper mit Volumen-Hologramm
DE102007023560B4 (de) * 2007-05-21 2009-02-05 Ovd Kinegram Ag Mehrschichtkörper
DE102008024147B4 (de) * 2008-05-19 2020-12-03 Ovd Kinegram Ag Optisches Sicherheitselement
GB201003397D0 (en) * 2010-03-01 2010-04-14 Rue De Int Ltd Moire magnification security device
US10207531B2 (en) 2013-12-02 2019-02-19 SECTAG GmbH Security device
GB201513096D0 (en) * 2015-07-24 2015-09-09 Rue De Int Ltd Diffractive security device and method of manufacturing thereof
EA031691B1 (ru) * 2016-10-24 2019-02-28 Общество С Ограниченной Ответственностью "Центр Компьютерной Голографии" Микрооптическая система для формирования изображений с кинематическими эффектами движения
CN109031676B (zh) * 2017-06-08 2020-05-26 京东方科技集团股份有限公司 投影装置、平视显示设备及车载视觉辅助系统
DE102017120536B4 (de) * 2017-09-06 2023-12-14 Ovd Kinegram Ag Verfahren zur Herstellung eines Hologramms, sowie ein Sicherheitselement und ein Sicherheitsdokument
EP3815920B1 (en) * 2018-06-29 2024-11-06 Toppan Printing Co., Ltd. Authentication body, authentication body manufacturing method, authentication body reading method, and authentication body verification method
JP7234519B2 (ja) * 2018-07-05 2023-03-08 凸版印刷株式会社 表示デバイス
RU190048U1 (ru) * 2018-12-28 2019-06-17 Общество С Ограниченной Ответственностью "Центр Компьютерной Голографии" Микрооптическая система для формирования 2D изображений
EP3842252B1 (en) * 2019-12-23 2022-05-25 Holography Systems International Limited Microoptical system for the formation of the 3d image in the zero order of diffraction

Also Published As

Publication number Publication date
WO2022148977A1 (en) 2022-07-14
GB2602796B (en) 2023-08-23
EP4274742A1 (en) 2023-11-15
GB202100327D0 (en) 2021-02-24
AU2022206102A9 (en) 2025-03-13
JP2024502477A (ja) 2024-01-19
US12240261B2 (en) 2025-03-04
US20240051324A1 (en) 2024-02-15
AU2022206102A1 (en) 2023-07-13
GB2602796A (en) 2022-07-20

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