IT8222440A0 - Filtro cromatico sottrattivo a diffrazione, sensibile all'angolo di incidenza della luce policromatica incidente. - Google Patents

Filtro cromatico sottrattivo a diffrazione, sensibile all'angolo di incidenza della luce policromatica incidente.

Info

Publication number
IT8222440A0
IT8222440A0 IT8222440A IT2244082A IT8222440A0 IT 8222440 A0 IT8222440 A0 IT 8222440A0 IT 8222440 A IT8222440 A IT 8222440A IT 2244082 A IT2244082 A IT 2244082A IT 8222440 A0 IT8222440 A0 IT 8222440A0
Authority
IT
Italy
Prior art keywords
subtractive
incidence
sensitive
angle
chromatic filter
Prior art date
Application number
IT8222440A
Other languages
English (en)
Other versions
IT1152014B (it
IT8222440A1 (it
Inventor
Karl Heinrich Knop
Rudolf Hans Morf
Original Assignee
Rca 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 Rca Corp filed Critical Rca Corp
Publication of IT8222440A0 publication Critical patent/IT8222440A0/it
Publication of IT8222440A1 publication Critical patent/IT8222440A1/it
Application granted granted Critical
Publication of IT1152014B publication Critical patent/IT1152014B/it

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
    • 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
    • B42D25/324—Reliefs
    • 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
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/425—Marking by deformation, e.g. embossing
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1828—Diffraction gratings having means for producing variable diffraction
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S283/00—Printed matter
    • Y10S283/902—Anti-photocopy

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Manufacturing & Machinery (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
  • Credit Cards Or The Like (AREA)
  • Optical Filters (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
IT22440/82A 1981-07-20 1982-07-16 Filtro cromatico sottrattivo a diffrazione, sensibile all'angolo di incidenza della luce policromatica incidente IT1152014B (it)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8122335 1981-07-20
GB8128194 1981-09-17

Publications (3)

Publication Number Publication Date
IT8222440A0 true IT8222440A0 (it) 1982-07-16
IT8222440A1 IT8222440A1 (it) 1984-01-16
IT1152014B IT1152014B (it) 1986-12-24

Family

ID=26280187

Family Applications (1)

Application Number Title Priority Date Filing Date
IT22440/82A IT1152014B (it) 1981-07-20 1982-07-16 Filtro cromatico sottrattivo a diffrazione, sensibile all'angolo di incidenza della luce policromatica incidente

Country Status (13)

Country Link
US (1) US4484797A (it)
JP (1) JPS58500916A (it)
AU (1) AU549963B2 (it)
CA (2) CA1188139A (it)
CH (1) CH661803A5 (it)
DE (1) DE3248899T1 (it)
ES (1) ES8401640A1 (it)
FR (1) FR2509873B1 (it)
GB (1) GB2113421B (it)
IT (1) IT1152014B (it)
NL (1) NL8220263A (it)
NZ (1) NZ201332A (it)
WO (1) WO1983000395A1 (it)

Families Citing this family (88)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4576439A (en) 1982-09-15 1986-03-18 Rca Corporation Reflective diffractive authenticating device
US4661983A (en) * 1982-10-05 1987-04-28 Rca Corporation Secure document identification technique
JPH068077B2 (ja) * 1982-12-28 1994-02-02 大日本印刷株式会社 カ−ド及びカ−ドの真偽判定方法
US4526466A (en) * 1983-09-01 1985-07-02 Rca Corporation Technique for verifying genuineness of authenticating device
US4832445A (en) * 1986-05-16 1989-05-23 American Bank Note Holographics, Inc. Security diffraction devices difficult to exactly duplicate
US4869532A (en) * 1986-10-07 1989-09-26 Dainichiseika Color & Chemicals Mfg. Co., Ltd. Prints and production method thereof
US4968064A (en) * 1987-01-13 1990-11-06 Mancuso Robert J Variable color print
US4932685A (en) * 1987-01-13 1990-06-12 Mancuso Robert J Variable color print and method of making same
US5128779A (en) * 1988-02-12 1992-07-07 American Banknote Holographics, Inc. Non-continuous holograms, methods of making them and articles incorporating them
US5145212A (en) * 1988-02-12 1992-09-08 American Banknote Holographics, Inc. Non-continuous holograms, methods of making them and articles incorporating them
JP2800364B2 (ja) * 1990-04-27 1998-09-21 松下電器産業株式会社 光学的ローパスフィルタ
JPH0659218A (ja) * 1992-08-05 1994-03-04 Matsushita Electric Ind Co Ltd 光学的ローパスフィルタ
US5312656A (en) * 1993-02-05 1994-05-17 Mattel, Inc. Toy picnic set having latent image placemat
US5323266A (en) * 1993-02-26 1994-06-21 United States Of America As Represented By The Secretary Of The Air Force Electroformed buried gratings for high-power shared aperture systems
US5825547A (en) * 1993-08-06 1998-10-20 Commonwealth Scientific And Industrial Research Organisation Diffractive device for generating one or more diffracting images including a surface relief structure at least partly arranged in a series of tracks
TW265421B (it) * 1993-11-23 1995-12-11 Commw Scient Ind Res Org
AUPM382994A0 (en) * 1994-02-14 1994-03-10 Commonwealth Scientific And Industrial Research Organisation Diffractive device with enhanced anti-copying protection
DE4421407C1 (de) * 1994-06-18 1995-06-01 Kurz Leonhard Fa Flächenelement mit einer räumlichen, bereichsweise beschichteten Mikrostruktur sowie Verwendung eines solchen Flächenelements
US5757521A (en) * 1995-05-11 1998-05-26 Advanced Deposition Technologies, Inc. Pattern metallized optical varying security devices
GB2317448B (en) * 1995-06-22 1999-10-27 Secr Defence Anticounterfeiting method
US5815292A (en) * 1996-02-21 1998-09-29 Advanced Deposition Technologies, Inc. Low cost diffraction images for high security application
US5881196A (en) * 1996-10-24 1999-03-09 Phillips; Stephen Waveguide security device
US6045894A (en) * 1998-01-13 2000-04-04 3M Innovative Properties Company Clear to colored security film
US6788463B2 (en) 1998-01-13 2004-09-07 3M Innovative Properties Company Post-formable multilayer optical films and methods of forming
JP3807871B2 (ja) * 1998-05-28 2006-08-09 株式会社ニデック レーザ治療装置
GB0025096D0 (en) * 2000-10-13 2000-11-29 Bank Of England Detection of printing and coating media
US6762880B2 (en) * 2001-02-21 2004-07-13 Ibsen Photonics A/S Grating structures and methods of making the grating structures
DE50212303D1 (de) * 2002-01-18 2008-07-03 Ovd Kinegram Ag Diffraktives sicherheitselement mit integriertem optischen wellenleiter
US8765484B2 (en) 2002-02-07 2014-07-01 The Regents Of The University Of California Optically encoded particles
US6943952B2 (en) 2002-04-08 2005-09-13 Hologram Industries (Sa) Optical security component
FR2838201B1 (fr) * 2002-04-08 2004-07-16 Hologram Ind Sarl Composant optique de securite
FR2838202B1 (fr) * 2002-04-08 2004-10-22 Hologram Ind Composant optique de securite
US6917471B2 (en) * 2003-01-24 2005-07-12 Sumitomo Electric Industries, Ltd. Diffraction grating element
CN100338486C (zh) * 2003-02-18 2007-09-19 住友电气工业株式会社 衍射光栅元件及其制造方法和设计方法
US7019904B2 (en) * 2003-02-18 2006-03-28 Sumitomo Electric Industries, Ltd. Diffraction grating element, production method of diffraction grating element, and method of designing diffraction grating element
AU2004308379A1 (en) * 2003-12-22 2005-07-14 The Regents Of The University Of California Optically encoded particles with grey scale spectra
GB0410245D0 (en) * 2004-05-07 2004-06-09 Suisse Electronique Microtech Diffractive filter
US7420735B2 (en) * 2004-07-26 2008-09-02 Nippon Sheet Glass Co., Ltd. Transmission type diffraction grating
GB0417422D0 (en) * 2004-08-05 2004-09-08 Suisse Electronique Microtech Security device
GB0422266D0 (en) * 2004-10-07 2004-11-10 Suisse Electronique Microtech Security device
ATE400062T1 (de) * 2005-06-30 2008-07-15 Suisse Electronique Microtech Farbbildaufnahmesensor
ATE495026T1 (de) * 2005-09-26 2011-01-15 Suisse Electronique Microtech Ein diffraktives sicherheitselement
US8133638B2 (en) * 2006-05-30 2012-03-13 Brady Worldwide, Inc. All-polymer grating microstructure
US7864424B2 (en) * 2006-05-31 2011-01-04 CSEM Centre Suisse d'Electronique et de Microtechnique SA-Recherche et Développement Zero order pigments (ZOP)
EP1998193A1 (en) 2006-05-31 2008-12-03 CSEM Centre Suisse d'Electronique et de Microtechnique SA Nano-structured Zero-order diffractive filter
JP2009538937A (ja) 2006-05-31 2009-11-12 セエスウエム サントル スイス デレクトロニクエ ドゥ ミクロテクニク ソシエテ アノニム−ルシェルシェ エ デブロップマン ０次回折顔料
US7821691B2 (en) * 2006-07-28 2010-10-26 CSEM Centre Suisse d'Electronique et de Microtechnique SA—Recherche et Développement Zero-order diffractive filter
US20080024866A1 (en) * 2006-07-28 2008-01-31 Harald Walter Zero-order diffractive filter
EP2119433B1 (en) * 2007-02-16 2015-06-17 CSEM Centre Suisse d'Electronique et de Microtechnique SA - Recherche et Développement Verification method
US8542442B2 (en) * 2007-05-07 2013-09-24 Centre Suisse d'Electronique et de Microtechnique SA—Recherche et Developpement Isotropic zero-order diffractive filter
JP2010210235A (ja) * 2007-07-03 2010-09-24 Asahi Glass Co Ltd 雨滴検出システム
WO2009068462A1 (en) * 2007-11-27 2009-06-04 Basf Se Use of zero-order diffractive pigments
EP2108944A3 (en) 2008-04-09 2013-02-13 CSEM Centre Suisse d'Electronique et de Microtechnique SA - Recherche et Développement Optical environmental sensor and method of manufacturing the sensor
DE102009012299A1 (de) * 2009-03-11 2010-09-16 Giesecke & Devrient Gmbh Sicherheitselement
EP2264491B1 (en) 2009-06-15 2017-08-09 CSEM Centre Suisse d'Electronique et de Microtechnique SA - Recherche et Développement Zero-order diffractive filter and method for manufacturing thereof
DE102009056934A1 (de) 2009-12-04 2011-06-09 Giesecke & Devrient Gmbh Sicherheitselement, Wertdokument mit einem solchen Sicherheitselement sowie Herstellungsverfahren eines Sicherheitselementes
DE102010047250A1 (de) 2009-12-04 2011-06-09 Giesecke & Devrient Gmbh Sicherheitselement, Wertdokument mit einem solchen Sicherheitselement sowie Herstellungsverfahren eines Sicherheitselementes
US9354363B2 (en) * 2010-04-13 2016-05-31 Hewlett Packard Enterprise Development Lp Controlling phase response in a sub-wavelength grating lens
FR2959830B1 (fr) 2010-05-07 2013-05-17 Hologram Ind Composant optique d'authentification et procede de fabrication dudit composant
WO2012019226A1 (en) 2010-08-11 2012-02-16 Securency International Pty Ltd Optically variable device
EP2447743B1 (en) 2010-11-01 2016-10-26 CSEM Centre Suisse d'Electronique et de Microtechnique SA - Recherche et Développement Isotropic optical filter and method of manufacturing thereof
EP2447744B1 (en) 2010-11-01 2021-03-31 CSEM Centre Suisse d'Electronique et de Microtechnique SA - Recherche et Développement Pixelated optical filter and method for the manufacturing thereof
DE102011014114B3 (de) 2011-03-15 2012-05-10 Ovd Kinegram Ag Mehrschichtkörper und Verfahren zur Herstellung eines Mehrschichtkörpers
AU2011100315B4 (en) * 2011-03-22 2011-09-08 Innovia Security Pty Ltd Security element
DE102011108242A1 (de) 2011-07-21 2013-01-24 Giesecke & Devrient Gmbh Optisch variables Element, insbesondere Sicherheitselement
FR2982038B1 (fr) 2011-10-28 2013-11-15 Hologram Ind Composant optique de securite a effet reflectif, fabrication d'un tel composant et document securise equipe d'un tel composant
RU2587072C1 (ru) * 2012-06-01 2016-06-10 Топпан Принтинг Ко., Лтд. Неизометрический отражательный отображающий элемент, носитель информации, использующий неизометрический отражательный отображающий элемент
DE102012108169A1 (de) 2012-09-03 2014-05-28 Ovd Kinegram Ag Sicherheitselement sowie Sicherheitsdokument
FI125270B (en) 2012-09-20 2015-08-14 Teknologian Tutkimuskeskus Vtt Oy Optical device with diffractive grating
FR2996338B1 (fr) 2012-09-28 2020-10-16 Hologram Ind Composant optique de securite a effet reflectif, fabrication d'un tel composant et document securise equipe d'un tel composant
JP6557148B2 (ja) 2013-01-15 2019-08-07 レニショウ パブリック リミテッド カンパニーＲｅｎｉｓｈａｗ Ｐｕｂｌｉｃ Ｌｉｍｉｔｅｄ Ｃｏｍｐａｎｙ 測定スケール
JP6434422B2 (ja) * 2013-01-15 2018-12-05 レニショウ パブリック リミテッド カンパニーＲｅｎｉｓｈａｗ Ｐｕｂｌｉｃ Ｌｉｍｉｔｅｄ Ｃｏｍｐａｎｙ 周期的偏光ナノ構造によって表されるデータを読み取る方法
DE212014000112U1 (de) 2013-05-21 2016-02-02 Hologram Industries Gesicherte Identifikationskomponente
DE102013105246B4 (de) 2013-05-22 2017-03-23 Leonhard Kurz Stiftung & Co. Kg Optisch variables Element
WO2015021544A1 (en) 2013-08-11 2015-02-19 NanoMedia Solutions Inc. Nano-media information carrier based on pixelated nano-structures combined with an intensity control layer
EP3042225A1 (en) * 2013-09-02 2016-07-13 Danmarks Tekniske Universitet Nanostructures for structural colouring
FR3013258B1 (fr) 2013-11-19 2016-02-19 Hologram Ind Document personnalisable pour la fabrication d’un document de securite, document de securite personnalise et fabrication d’un tel document de securite
US9945666B2 (en) 2014-01-08 2018-04-17 The Regents Of The University Of Michigan Narrowband transmission filter
FR3019496A1 (fr) 2014-04-07 2015-10-09 Hologram Ind Composant optique de securite a effet reflectif, fabrication d'un tel composant et document securise equipe d'un tel composant
DE102014010751A1 (de) 2014-07-21 2016-01-21 Giesecke & Devrient Gmbh Sicherheitselement mit Subwellenlängengitter
DE102015010191A1 (de) 2015-08-06 2017-02-09 Giesecke & Devrient Gmbh Sicherheitselement mit Subwellenlängengitter
US10613268B1 (en) 2017-03-07 2020-04-07 Facebook Technologies, Llc High refractive index gratings for waveguide displays manufactured by self-aligned stacked process
FR3072325B1 (fr) 2017-10-10 2019-11-08 Surys Composant optique de securite visible en reflexion, fabrication d'un tel composant et document securise equipe d'un tel composant
FR3072053B1 (fr) 2017-10-10 2019-11-08 Surys Composant optique de securite a effet reflectif, fabrication d'un tel composant et document securise equipe d'un tel composant
EP3727872B1 (fr) 2017-12-19 2022-02-16 Surys Composant optique de securite visible en reflexion, fabrication d'un tel composant et document securisé equipé d'un tel composant
GB2572745B (en) 2018-03-22 2021-06-09 De La Rue Int Ltd Security elements and methods of manufacture thereof
KR20220063259A (ko) * 2019-09-25 2022-05-17 도판 인사츠 가부시키가이샤 컬러 표시체, 인증 매체, 및 컬러 표시체의 진안 판정 방법
FR3124980B1 (fr) 2021-07-09 2024-01-19 Surys Composants optiques de sécurité, fabrication de tels composants et documents sécurisés équipés de tels composants

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3542453A (en) * 1967-10-25 1970-11-24 Frederick W Kantor Grating device composed of elongated layers
US3623794A (en) * 1968-12-19 1971-11-30 Technical Operations Inc Spectral zonal encoder
CH523509A (de) * 1970-09-18 1972-05-31 Balzers Patent Beteilig Ag Interferenzfilter, bestehend aus einer Mehrzahl von abwechselnd hoch- und niedrigbrechenden lichtdurchlässigen Schichten auf einem lichtdurchlässigen Träger, welches innerhalb eines bestimmten Wellenlängenbereichs ein bestimmtes Wellenlängenband reflektiert, die Strahlung der übrigen Teile des genannten Bereiches jedoch hindurchlässt
US3858977A (en) * 1972-01-18 1975-01-07 Canadian Patents Dev Optical interference authenticating means
JPS5222209B2 (it) * 1972-06-23 1977-06-16
JPS50147339A (it) * 1974-05-16 1975-11-26
US3957354A (en) * 1975-02-03 1976-05-18 Rca Corporation Diffractive subtractive color filtering technique
CH588358A5 (it) * 1975-08-14 1977-05-31 Landis & Gyr Ag
US4057326A (en) * 1976-05-27 1977-11-08 Rca Corporation Simplified and improved diffractive subtractive color filtering technique
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
DE2645075C2 (de) * 1976-10-06 1985-06-20 Philips Patentverwaltung Gmbh, 2000 Hamburg Optische Anordnung zur Erzeugung von spektral zerlegten Abbildungen
GB1589766A (en) * 1976-10-26 1981-05-20 Rca Corp Fineline diffractive subtractive colour filters
DE2657246C2 (de) * 1976-12-17 1978-09-28 Hoechst Ag, 6000 Frankfurt Original eines Informationsträgers, Verfahren zum Herstellen des Originals, Verfahren zum Herstellen einer Matrize zum Prägen des Originals sowie Informa tionsträger, der mit der Matrize hergestellt ist
DE2853953A1 (de) * 1978-12-14 1980-07-03 Hoechst Ag Identifikationskarte
JPS55101622A (en) * 1979-01-29 1980-08-02 Hideyo Oka Dehydration of concrete utilizing temporary canvas mold fixed by negative pressure
US4255019A (en) * 1979-04-09 1981-03-10 Rca Corporation Diffractive color filter
US4281894A (en) * 1980-01-21 1981-08-04 The Perkin-Elmer Corporation Very low absorption, low efficiency laser beamsampler
US4892385A (en) * 1981-02-19 1990-01-09 General Electric Company Sheet-material authenticated item with reflective-diffractive authenticating device

Also Published As

Publication number Publication date
JPS6245533B2 (it) 1987-09-28
IT1152014B (it) 1986-12-24
CA1198919A (en) 1986-01-07
CA1188139A (en) 1985-06-04
GB8305589D0 (en) 1983-03-30
FR2509873B1 (fr) 1987-08-07
AU8760382A (en) 1983-03-17
NZ201332A (en) 1985-03-20
CH661803A5 (de) 1987-08-14
AU549963B2 (en) 1986-02-20
ES514155A0 (es) 1983-12-01
FR2509873A1 (fr) 1983-01-21
GB2113421A (en) 1983-08-03
WO1983000395A1 (en) 1983-02-03
DE3248899C2 (it) 1987-08-06
ES8401640A1 (es) 1983-12-01
IT8222440A1 (it) 1984-01-16
JPS58500916A (ja) 1983-06-02
NL8220263A (nl) 1983-06-01
DE3248899T1 (de) 1983-07-07
US4484797A (en) 1984-11-27
GB2113421B (en) 1985-07-31

Similar Documents

Publication Publication Date Title
IT8222440A0 (it) Filtro cromatico sottrattivo a diffrazione, sensibile all'angolo di incidenza della luce policromatica incidente.
DE3469616D1 (en) Optical diffraction security element
DE69022922D1 (de) Beugungslinse.
FI811072L (fi) Anordning foer genomstickning av hud
AU7576381A (en) Tamper-proofing gas meters
DE3888813D1 (de) Spektralphotometer mit Verwendung eines konkaven holographischen Beugungsgitters.
DE3582844D1 (de) Optische vorrichtung.
DK513682A (da) Drejelig indstillingsmekanisme
ES8801434A1 (es) Un aparato analizador espectral e indicador de direccion para recibir una radiacion incidente colimada o esencialmente colimada.
AU541278B2 (en) A 6-substituted 4-hydroxy pyran-2-one
AU557402B2 (en) Protection device against solar light
NO892741D0 (no) Punktmater for elektrolyseceller for fremstilling av aluminium.
IT8125608A0 (it) Reattore a spostamento spettrale.
GB2069715B (en) Light collecting arrangement using a diffraction grating
NL7902639A (nl) Refractor optische systemen.
AU550161B2 (en) Atomic absorption spectrophotometer
AU526541B2 (en) Bridge top stop
JPS5671082A (en) Ultraviolet light absorber copolymerized compound
DK25282A (da) Horikulturelt indelukke
JPS56115454A (en) Angle rafter ornament
FI824140L (fi) Anordning foer loestagbar foerbindning av stolpdelar i en lastbanke
FR2511487B1 (fr) Capteur solaire
OA06822A (fr) Capteur solaire.
IT7919848A0 (it) Gruppo galvanometrico a piu'canali.
AU514060B2 (en) Diffractive subtractive light filter

Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970729