WO2012010665A2 - Combinaison d'une matière luminescente et d'un hologramme - Google Patents
Combinaison d'une matière luminescente et d'un hologramme Download PDFInfo
- Publication number
- WO2012010665A2 WO2012010665A2 PCT/EP2011/062552 EP2011062552W WO2012010665A2 WO 2012010665 A2 WO2012010665 A2 WO 2012010665A2 EP 2011062552 W EP2011062552 W EP 2011062552W WO 2012010665 A2 WO2012010665 A2 WO 2012010665A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- luminescent substance
- oxide
- radiation
- component
- volume hologram
- Prior art date
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- 239000000126 substance Substances 0.000 title claims abstract description 84
- 238000004020 luminiscence type Methods 0.000 title claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 27
- 229910021644 lanthanide ion Inorganic materials 0.000 claims abstract description 11
- 150000002222 fluorine compounds Chemical class 0.000 claims abstract 2
- 230000005855 radiation Effects 0.000 claims description 48
- 150000001875 compounds Chemical class 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 13
- 230000003287 optical effect Effects 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 12
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 11
- 239000002019 doping agent Substances 0.000 claims description 11
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- 150000004645 aluminates Chemical class 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 229910001428 transition metal ion Inorganic materials 0.000 claims description 5
- 229910052727 yttrium Inorganic materials 0.000 claims description 5
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 5
- 229910052691 Erbium Inorganic materials 0.000 claims description 4
- 229910052769 Ytterbium Inorganic materials 0.000 claims description 4
- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 claims description 4
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- 150000001298 alcohols Chemical class 0.000 description 1
- 229910001515 alkali metal fluoride Inorganic materials 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 229910001618 alkaline earth metal fluoride Inorganic materials 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- GCTPMLUUWLLESL-UHFFFAOYSA-N benzyl prop-2-enoate Chemical compound C=CC(=O)OCC1=CC=CC=C1 GCTPMLUUWLLESL-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- DJUWPHRCMMMSCV-UHFFFAOYSA-N bis(7-oxabicyclo[4.1.0]heptan-4-ylmethyl) hexanedioate Chemical compound C1CC2OC2CC1COC(=O)CCCCC(=O)OCC1CC2OC2CC1 DJUWPHRCMMMSCV-UHFFFAOYSA-N 0.000 description 1
- KBWLNCUTNDKMPN-UHFFFAOYSA-N bis(oxiran-2-ylmethyl) hexanedioate Chemical compound C1OC1COC(=O)CCCCC(=O)OCC1CO1 KBWLNCUTNDKMPN-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000000298 carbocyanine Substances 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 238000004113 cell culture Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002872 contrast media Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 125000004386 diacrylate group Chemical group 0.000 description 1
- 239000012955 diaryliodonium Chemical class 0.000 description 1
- 150000002012 dioxanes Chemical class 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 150000002118 epoxides Chemical class 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 229940052303 ethers for general anesthesia Drugs 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 125000003055 glycidyl group Chemical group C(C1CO1)* 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 150000005826 halohydrocarbons Chemical class 0.000 description 1
- BNRNAKTVFSZAFA-UHFFFAOYSA-N hydrindane Chemical compound C1CCCC2CCCC21 BNRNAKTVFSZAFA-UHFFFAOYSA-N 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000000976 ink Substances 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 229910052747 lanthanoid Inorganic materials 0.000 description 1
- 150000002601 lanthanoid compounds Chemical class 0.000 description 1
- 150000002602 lanthanoids Chemical class 0.000 description 1
- 150000007517 lewis acids Chemical class 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 description 1
- KKFHAJHLJHVUDM-UHFFFAOYSA-N n-vinylcarbazole Chemical compound C1=CC=C2N(C=C)C3=CC=CC=C3C2=C1 KKFHAJHLJHVUDM-UHFFFAOYSA-N 0.000 description 1
- KHARCSTZAGNHOT-UHFFFAOYSA-L naphthalene-2,3-dicarboxylate Chemical compound C1=CC=C2C=C(C([O-])=O)C(C(=O)[O-])=CC2=C1 KHARCSTZAGNHOT-UHFFFAOYSA-L 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- VLTRZXGMWDSKGL-UHFFFAOYSA-M perchlorate Inorganic materials [O-]Cl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-M 0.000 description 1
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 1
- 239000000825 pharmaceutical preparation Substances 0.000 description 1
- 229940127557 pharmaceutical product Drugs 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- WRAQQYDMVSCOTE-UHFFFAOYSA-N phenyl prop-2-enoate Chemical compound C=CC(=O)OC1=CC=CC=C1 WRAQQYDMVSCOTE-UHFFFAOYSA-N 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000011698 potassium fluoride Substances 0.000 description 1
- 235000003270 potassium fluoride Nutrition 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 238000010526 radical polymerization reaction Methods 0.000 description 1
- GEKRJZFHLJNDQM-UHFFFAOYSA-N s-(naphthalen-1-ylmethyl) prop-2-enethioate Chemical compound C1=CC=C2C(CSC(=O)C=C)=CC=CC2=C1 GEKRJZFHLJNDQM-UHFFFAOYSA-N 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 150000003457 sulfones Chemical class 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-O sulfonium Chemical compound [SH3+] RWSOTUBLDIXVET-UHFFFAOYSA-O 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- QXJQHYBHAIHNGG-UHFFFAOYSA-N trimethylolethane Chemical compound OCC(C)(CO)CO QXJQHYBHAIHNGG-UHFFFAOYSA-N 0.000 description 1
- WLOQLWBIJZDHET-UHFFFAOYSA-N triphenylsulfonium Chemical class C1=CC=CC=C1[S+](C=1C=CC=CC=1)C1=CC=CC=C1 WLOQLWBIJZDHET-UHFFFAOYSA-N 0.000 description 1
- WUKMCKCDYKBLBG-UHFFFAOYSA-N tris(4-methoxyphenyl)sulfanium Chemical compound C1=CC(OC)=CC=C1[S+](C=1C=CC(OC)=CC=1)C1=CC=C(OC)C=C1 WUKMCKCDYKBLBG-UHFFFAOYSA-N 0.000 description 1
- QKFJVDSYTSWPII-UHFFFAOYSA-N tris(4-methylphenyl)sulfanium Chemical compound C1=CC(C)=CC=C1[S+](C=1C=CC(C)=CC=1)C1=CC=C(C)C=C1 QKFJVDSYTSWPII-UHFFFAOYSA-N 0.000 description 1
- 125000002221 trityl group Chemical group [H]C1=C([H])C([H])=C([H])C([H])=C1C([*])(C1=C(C(=C(C(=C1[H])[H])[H])[H])[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- 238000002211 ultraviolet spectrum Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/14—Security printing
- B41M3/144—Security printing using fluorescent, luminescent or iridescent effects
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
- D21H21/44—Latent security elements, i.e. detectable or becoming apparent only by use of special verification or tampering devices or methods
- D21H21/48—Elements suited for physical verification, e.g. by irradiation
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
- G07D7/003—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using security elements
- G07D7/0032—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using security elements using holograms
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
- G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
- G07D7/12—Visible light, infrared or ultraviolet radiation
- G07D7/1205—Testing spectral properties
Definitions
- the invention relates to a combination or composition for marking articles comprising a luminescent substance based on oxides, oxide sulfides and / or oxide fluorides of lanthanide ions and a holographic support for recording or reconstruction of a volume hologram.
- the luminescent substance has a characteristic emission spectrum and can be used in combination with the volume hologram for authentication and / or identification of products such as substances or mixtures of substances.
- An article of the invention is a composition for marking articles comprising (i) a luminescent substance containing (a) an IR-stimulable component comprising at least one oxide, oxide sulfide or oxide fluoride of lanthanide ions, and (b) optionally a UV-excitable component; and (ii) a holographic support for recording or reconstructing a volume hologram.
- the possibilities for marking objects e.g. Construction or spare parts of electronic equipment, machinery, vehicles, aircraft, etc., packaging or containers, e.g. of pharmaceutical products, fashion items, documents, banknotes, etc. significantly improved.
- the possibility of information storage is also significantly increased.
- the combination or composition according to the invention can for Marking products in different ways.
- the luminescent substance can be introduced into the holographic carrier, it being possible for particles of the luminescent substance to be dispersed in the entire region of the carrier, in a part thereof or in individual layers thereof.
- the luminescent substance can also be arranged as a layer on one or both surfaces of the carrier.
- the luminescent substance is present separately from the carrier, so that luminescent substance and holographic carrier can be present in or on different regions of the product to be marked, wherein these two regions can be adjacent or separate from one another.
- Component (i) of the composition is a luminescent substance comprising (a) an IR-stimulable component comprising at least one oxide, oxide sulfide or oxide fluoride of lanthanide ions, and (b) optionally a UV-excitable component.
- Lanthanoid compounds for use as anti-Stokes luminescent substances are described, for example, in WO 00/60527, WO 2008/000461 and in US Pat. Nos. 6,802,992 and 6,686,074, the contents of which are hereby incorporated by reference. These lanthanoid oxide sulfides can be used to label substances or mixtures of substances.
- the use of luminescent substances (i), the two excitable in different wavelength ranges components (a) and (b) contain.
- Component (a) is an IR-radiation excitable component comprising an oxide, oxide sulfide or oxide fluoride of lanthanide ions.
- Component (b) is a component which can be excited by UV radiation and which is advantageously an inorganic compound which is inert under ambient conditions, for example an optionally doped aluminate which absorbs in the UV wavelength range and luminescence radiation characteristic of the compound, eg fluorescence radiation , emitted.
- Such compositions are the subject of German Patent Application DE 10 2010 028 818.7, the contents of which are expressly incorporated by reference.
- Component (a) is preferably a luminescent substance with "upconverter” and / or “anti-Stokes” properties.
- component (a) comprises an oxide, oxide or oxyfluoride of yttrium and an oxide, oxide or oxide fluoride of at least one, at least two or at least three further elements selected from lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, terbium , Dysprosium, holmium, erbium, thulium, ytterbium and lutetium, and optionally at least one dopant selected from oxides and / or fluorides of main or subgroup elements.
- component (a) is a luminescent substance as described in WO 2008/000461.
- the oxide, oxide sulfide or oxide fluoride of yttrium is preferably present in a proportion of> 85 mol%> 90 mol%,> 92 mol%,> 94 mol% or> 96 mol% , Further oxides, oxide sulfides or oxide fluorides are preferably present in a proportion of in each case up to 5 mol%, up to 3.5 mol% or up to 2 mol% based on the entire component (a).
- the further oxides, oxide sulfides or oxide fluorides are preferably selected from the oxides, oxide sulfides or oxide fluorides of erbium, ytterbium and of at least one further element, in particular of lutetium, gadolinium, holmium, thulium, dysprosium and / or europium.
- the oxides, oxide sulfides or oxide fluorides of erbium and ytterbium are preferably present in a proportion of 0.5-2 mol%, particularly preferably 1 -2 mol% based on the total component (a).
- the further oxides, oxide sulfides or oxide fluorides are preferably used in minor proportions of, for example, 0.1 to 1 mol%, more preferably 0.1 to 0.5 mol%, based on the total component (a).
- component (a) of the luminescent substance besides the oxide, oxide sulfide or oxide fluoride of yttrium may contain oxides, oxide sulfides or oxide fluorides of 1, 2, 3, 4, 5, 6, 7 or even more other elements.
- Component (a) of the luminescent substance additionally additionally contains at least one dopant selected from oxides and / or fluorides of main or subgroup elements.
- the dopants are preferably present in a proportion of up to 5 mol%, more preferably of up to 2 mol%, even more preferably of up to 1 mol%, even more preferably of 0.05-1 mol% and most preferably from 0.1-0.2 mol% based on the entire component (a).
- a preferred dopant is a fluoride which may be exemplified by an alkaline earth metal fluoride or alkali metal fluoride, e.g. as potassium fluoride, can be used.
- the fluoride is preferably present in a proportion of 0.1-0.2 mol% based on the entire component (a).
- dopants are alkaline earth metals and / or subgroup elements which are in the form of cations which are twice or more positively charged, preferably in the form of oxides and / or fluorides.
- Particularly preferred dopants are calcium, zinc and / or titanium, for example in the form of the oxides calcium oxide, zinc oxide or titanium dioxide.
- the cationic dopants are preferably present in a proportion of 0.1-0.2 mol%, based on the total component (a).
- the IR-excitable component (a) of the luminescent substance (i) is characterized on the one hand by a high luminescence intensity and on the other hand by emission lines or peaks which are characteristic of the presence and the proportions of the individual fractions.
- Component (a) of the luminescent substance (i) can be prepared as described in WO 2008/000461.
- dopants e.g. of polyvalent cations and / or fluoride causes drastic changes in the position and / or intensity of individual emission wavelengths. Furthermore, a strong increase in the total luminescence intensity is also found. It is believed that in addition to the two-photon absorption known in anti-Stokes materials, three-photon absorption also takes place.
- Component (b) of the luminescent substance (i) is a component that can be exposed to UV radiation by UV radiation, which emits a characteristic luminescence radiation after excitation. It is preferably an aluminate which is optionally doped with transition metal and / or lanthanide ions.
- Component (b) preferably contains an aluminate of alkaline earth metal ions, transition metal ions and / or lanthanide ions, preferably an aluminate of barium or magnesium or an aluminate of yttrium, optionally doped with Eu, Mn, Th and / or Cr ions.
- the dopant of component (b) is favorably present in a proportion of up to 10 mol%, up to 5 mol% or up to 1 mol% based on the entire component (b).
- the component (b) is favorably present in a total proportion of 1-30%, 5-20% or 8-12% based on the total weight of the components (a) and (b).
- the components (a) and / or (b) are present in the luminescent substance (i), preferably in crystalline form. Furthermore, it is preferred that the individual components consist of a single phase, for example a crystalline phase, which can be determined by X-ray diffractometric methods.
- the component (a) is particularly preferably in hexagonal crystalline form. If appropriate, the individual components (a) and / or (b) may also each consist of a mixture of a plurality of luminescent substances.
- the luminescent substance is usually present in the form of particles, the mean particle size being> _5 nm, in particular> _1 nm.
- the particle size in the range of 10 nm-100 ⁇ , preferably from 50 nm-50 ⁇ and particularly preferably from about 100 nm-10 ⁇ .
- the components (a) and (b) are preferably present in the luminescent substance (i) in a substantially homogeneous distribution, e.g. as a homogeneous distribution of particles, in particular of crystalline particles as described above before.
- This homogeneous distribution can be achieved by co-grinding the components in conventional milling equipment, e.g. Ball mills, can be achieved.
- Component (ii) of the agent according to the invention is a carrier for receiving or reconstructing a volume hologram.
- the carrier is a common carrier for volume holograms, eg a holographic film.
- the carrier may be a transparent or opaque carrier.
- the support may be of any size, eg from 1 mm 2 to 10 cm 2 . A usual size is about 15 x 20 mm.
- the shape of the carrier can be arbitrary, for example, round, rectangular, oval or irregular.
- the hologram may be a transmission or reflection (transmitted light) hologram. Specific types of holograms are Denisjuk holograms, RGB holograms, rainbow holograms, and computer-generated or digital holograms.
- the hologram contains stored data, information or interference patterns, for example in the form of one-dimensional or multi-dimensional barcodes, images, alphanumeric characters, digital data bits or combinations thereof. The data may be stored in visible or invisible form.
- volume hologram By combining a volume hologram with a luminescent substance comprising an IR component by UV radiation and by UV radiation to ber bare component, an additional improvement of the degree of authentication of products can be achieved.
- the additional use of a volume hologram enables the individualization or personalization of products, i. various products can be provided with individual holograms, which then, in conjunction with the two luminescent substance components, ensure secure authentication or identification of the product.
- volume holograms The recording of volume holograms is performed by irradiating a photosensitive composition with coherent light at a reference wavelength or a reference wavelength combination.
- the reference wavelength is, for example, in the range of 100-1000 nm.
- Preferred materials for the generation of volume holograms are photosensitive compositions comprising polymerizable materials.
- the hologram can be recorded by an individualized irradiation, so that each individual hologram contains individual information.
- Preferred photosensitive compositions are described in US 5,453,340, the disclosure of which is incorporated herein by reference.
- the photosensitive composition comprises (ii): (a) one or more radically polymerizable compounds, (b) one or more radical polymerization initiators, (c) one or more cationically polymerizable compounds other than (a), (d) one or several initiators for a cationic polymerization and (e) optionally further components.
- Suitable radically polymerizable compounds (a) are acrylic-based monomers, styrene-based monomers and / or vinyl-based monomers. Specific monomers are acrylamide, methacrylamide, phenyl acrylate, 2-phenoxyethyl acrylate, (acryloxyethyl) naphthalenedicarboxylate monoester, methylphenoxyethyl acrylate, nonylphenoxyethyl acrylate, ⁇ -acryloxyethyl hydrogenphthalate, phenoxypolyethylene glycol acrylate, 2,4,6-tribromophenyl acrylate, (2-methacryloxyethyl) diphenate monoester , Benzyl acrylate, 2,3-dibromophenyl acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-naphthyl acrylate, N-vinylcarbazole, 2- (9-carbazole) ethyl acrylate, triphen
- radical-generating substances such as organic dyes with polymer salts, eg, cyanines or salts of diphenyliodonium and diaryliodonium, can be used.
- anhydro-3,3'-dicarboxymethyl-9-ethyl-2,2'-thiacarbocyanine betaine anhydro-3-bis-rboxy-methyl-3 ', 9-diethyl-2,2'-thiacarbocyanine betaine, 3, 3 ⁇ 9-triethylene 1-2, 2'-th IACA rbo- cyanine iodide, 3,9-diethyl-3'-carboxymethyl-2,2'-thiacarbocyanine iodide and 3.3, 9-triethyl-2,2, - (4,5,4 ', 5'-dibenzo) thiacarbocyanine iodide, 2- [3- (3-ethyl-2-benzothiazoliden) -1-propenyl] -6- [2- (3- (3-ethyl-2 benzothiazolides) ethylidene-imino] -3-ethyl-1,3,5-thiadia
- Component (c) of the photosensitive composition (ii) is one or more cationically polymerizable compounds.
- examples are glycidyl-based compounds, epoxides or vinyl-based compounds.
- Specific monomers are Diglycerolpolyglycidylether, pentaerythritol polyglycidyl ether, 1, 4-bis (2,3-epoxypropoxyperfluorisopropyl) cyclohexane, sorbitol polyglycidyl ether, trimethylolpropane polyglycidyl ether, Resorcindi- glycidyl ether, 1, 6-hexanediol diglycidyl ether, Polyethylenglycoldiglycidyl- ether, phenyl glycidyl ether, pt-Butylphenyldiglycidylether, diglycidyl adipate, diglycidyl -o-phthalate, dibrom
- Component (d) of the photosensitive composition (ii) is an initiator of cationic polymerization.
- Suitable compounds which, upon decomposition, produce Granstedt or Lewis acids, e.g. Diaryliodonium salts, triarylsulfone salts, ferrous salts and the like.
- diaryliodonium salts are tetrafluoroborates, hexafluorophosphates, hexafluoroarsenates and hexafluoroantimonates of iodonium compounds.
- triarylsulfone salts are tetrafluoroborates, hexafluorophosphates, hexafluoroarsenates and hexafluoroantimonates of sulfonium or triphenylsulfonium compounds, such as 4-tert-butyltriphenylsulfonium, tris (4-methylphenyl) sulfonium, tris (4-methoxyphenyl) sulfonium, 4-thiophenyltriphenylsulfonium , Combinations of several of the compounds mentioned are suitable.
- the photosensitive composition may contain organic solvents, eg, ketones, esters, ethers, dioxanes, hydrocarbons, such as cyclohexane, halohydrocarbons, aromatics, alcohols, or mixtures of one or more such solvents.
- organic solvents eg, ketones, esters, ethers, dioxanes, hydrocarbons, such as cyclohexane, halohydrocarbons, aromatics, alcohols, or mixtures of one or more such solvents.
- Solventless photopolymer compositions can also be used.
- Further possible additives are binders, thermopolymerization inhibitors, silane coupling agents, plasticizers, dyes and / or Copolymers.
- the acquisition and reconstruction of a volume hologram from a photosensitive composition can be accomplished by known methods using coherent light radiation, e.g. Laser light, such as in US Pat. No. 5,453,340. Other methods for producing holograms are described in US 2009/286165 A. The disclosure of this document is expressly incorporated by reference.
- the luminescent-holographic support combination may be used for authentication or identification, for example as security marking of articles, e.g. Substances or mixtures of substances. In this way, the authenticity of products or documents can be determined.
- the holographic support is usually mounted on a surface of the object to be marked. This can e.g. by using adhesive material. Alternatively, however, the holographic support can also be incorporated into the surface of the article to be coated.
- the luminescent substance may be incorporated in the support and / or as a layer on the upper and / or lower surface of the support, e.g. in an adhesive material used to bond the backing to the article. Alternatively or additionally, the luminescent substance can also be applied separately from the carrier in or on the object. In this case, the luminescent substance and the carrier can be side by side, e.g. in adjoining relation, or in different, spatially separated areas of the object.
- the data or information present in the luminescent substance and in the hologram can be correlated with one another.
- the data may also be associated with an external data carrier, e.g. an optical disc, a FLASH memory or an RFID.
- the luminescent substance can, as it is chemically inert, in any solid and / or liquid substances or mixtures are introduced or applied to it.
- the luminescent substance can be applied to carrier substances, such as paints, toners, inks, paints, etc., or into products, such as plastics, metals, glass, silicones, paper, rubber, medicaments, etc.
- carriers substances such as paints, toners, inks, paints, etc.
- products such as plastics, metals, glass, silicones, paper, rubber, medicaments, etc.
- objects can be provided with a coating of the luminescent substance on its surface or parts thereof, which have a layer thickness of, for example, 1 -10 ⁇ m, preferably 1-5 ⁇ m.
- the luminescent substance is added to the product or a portion of the product in an amount of 20-2000 ppm, preferably 50-200 ppm.
- the luminescent substance according to the invention is suitable for use in biological systems, eg cell cultures, samples from body fluids or tissue sections or as a contrast agent.
- the luminescent substance can be coupled in nano- or microparticulate form to biological detection reagents.
- the surfaces of particles of the luminescent substance may be modified with deodetomines or other adhesive substances to enhance the suspending properties in, for example, organic liquids such as oils, gasolines, liquified gases, etc., in aqueous liquids such as body fluids, in aqueous-organic liquid systems, and flowable powders such as Toners, to improve.
- the smaller the particles the lower their tendency to sedimentation.
- intensive grinding for example, the particle size can be reduced so far, eg to ⁇ 100 nm, that a stable suspension of the particles in liquids is achieved even without the addition of adhesive substances.
- An anti-counterfeiting security of the marking is given by the fact that the emission lines characteristic of the respective luminescent substance represent a cryptographic key which can be detected with a detector adapted to the respective substance, ie the lock.
- the combination of the holographic support with the luminescent substance represents a further significant improvement in the anti-counterfeiting security of the marking.
- the luminescent substance preferably contains two components which can be excited to luminescence by radiation in different wavelength ranges.
- component (a) can be excited to luminescence with IR radiation in the range of 850-1500 nm, in particular of 920-1000 nm, and / or component (b) with UV radiation in the range of 350-420 nm, especially from 380-410 nm, are excited to luminescence.
- the presence of the humic substance in an article is detected by irradiation with two wavelengths.
- a first wavelength in the infrared range in particular with IR monochromatic laser light or with an IR light emitting diode with wavelengths between about 850 nm and 1500 nm, preferably between about 920 nm and 1000 nm, more preferably between about 950 nm and 1000 nm, most preferably between 920 nm and 985 nm, the component (a) being excited and the resulting emission radiation being detected approximately in the range between 300 nm and 1700 nm, in particular between 350 nm and 1000 nm.
- the irradiation of component (a) is preferably carried out with a power of 1-200 mW, in particular 10-80 mW.
- a second wavelength in the UV range in particular with UV monocohdtem laser light or with a UV light emitting diode with wavelengths between about 350 nm and 450 nm, preferably between about 380 nm and 400 nm, wherein the Component (b) excited and the emission radiation by eg Fluorescence is detected in the range between 300 nm and 1700 nm, in particular between 350 nm and 1000 nm.
- the irradiation of component (b) is preferably carried out with a power of 2-50 mW, in particular 5-30 mW.
- the components (a) and (b) of the ionene nitrogen are by irradiation with a wavelength in the IR range and by irradiation with a wavelength in the UV range are each separately excited to luminescence and the emission radiation of the components (a) and (b) is detected separately.
- the excitation of component (a) and component (b) can be carried out sequentially, ie at different times, with preferably first component (a) and then component (b) being excited.
- the reconstruction of the image produced by the holographic support may be carried out in a conventional manner by irradiation e.g. with a wavelength identical to the reference wave used to record the hologram.
- This wavelength can be in the range between 100-1000 nm and especially between 220-600 nm, e.g. at 266 nm, 405 nm or 530 nm.
- the wavelength may be identical to or different from a wavelength used to excite the luminescent substance.
- the emission radiation of the luminescent substance can be detected digitally together with the signal originating from the holographic carrier.
- digitized signals of the components (a) and (b) of the luminescent substance and of the hologram originating signals or parts of these signals (eg signals of individual peaks) can be converted by cryptographic measures using appropriate algorithms into a new signal.
- the data density can be increased by a factor of up to about 10 6 or more.
- the emission radiation of the components (a) and (b) is separately detected, for example, by independently recording the IR spectrum and the UV spectrum. Then both spectra are digitized and digital-cryptographically combined, where appropriate only selected portions of the digital information are used for authentication.
- a further subject of the invention is a readout system for detecting a luminescent substance and for recording or reconstructing a volume hologram in or on a product, comprising:
- At least one radiation source for exciting the luminescent substance preferably a first radiation source in the IR range and a second radiation source in the UV range,
- (V) at least one optical detection element for the detection of the luminescent substance and the volume hologram.
- the radiation sources are preferably each laser.
- the readout system preferably further includes a contact sensor, e.g. an optical contact sensor which controls the radiation sources, so that activation of the radiation source takes place only when the readout system is in contact with a sample to be determined.
- a contact sensor e.g. an optical contact sensor which controls the radiation sources, so that activation of the radiation source takes place only when the readout system is in contact with a sample to be determined.
- the irradiation of the product containing the luminescent substance by the readout system can be carried out directly with an optical waveguide or another optically relevant transfer medium, e.g. an optical solid body, a fluid, gas, etc., take place.
- the detection can be done visually or by means of detectors.
- optical waveguides whose heads are ground as a converging lens, so that incident light (IR or UV light) and light emitted by the luminescent substance (specific emission spectrum) form a unit and can be focused at the same point.
- incident light IR or UV light
- light emitted by the luminescent substance specifically emission spectrum
- An advantage of this is that no mechanical misalignment between receiver and transmitter can take place.
- the damping factor of the Optical waveguide for example made of glass or plastic, may vary, wherein the transition from the optical components (radiation source or detection element) to the optical waveguide is attached with little covision.
- the length of the optical fiber may vary and is typically between 1 cm and 50 cm.
- the readout system further includes one or more optical detection elements which are used for the selective detection of the authenticity of the luminescent substance, e.g. in terms of wavelength and / or intensity, and the hologram are provided.
- the detection elements may be, for example, diodes, photoelements or electronic detectors.
- detector matrices are used with a plurality of detectors preferably set differently, e.g. Diodes, photoelements or CCD matrices.
- the detectors of the detector array may be equipped with a spectrometer and / or optical filters, e.g. Bandpass filters, combined.
- the readout system may also include a programmable electronic unit that enables digital evaluation and conditioning of the measurement signal.
- the readout system of the present invention is desirably used in conjunction with a combination of luminescent composition and volume hologram as previously described.
- Yet another subject of the invention is a method for the combined detection of the authenticity of a luminescent substance and of a volume hologram in or on a product, comprising the steps:
- at least one radiation source for exciting the luminescent substance for example a first radiation source in the IR region and a second radiation source in the UV region, in order to generate emission radiation of IR and UV excitable components of the luminescence label, and at least one radiation source for the reconstruction of the volume hologram
- step (b) first the irradiation in the IR range and then the irradiation in the UV range.
- step (d) comprises digital processing of the measurement signal or parts thereof.
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Holo Graphy (AREA)
- Credit Cards Or The Like (AREA)
Abstract
L'invention concerne une combinaison ou une composition destinée au marquage de produits et comprenant une matière luminescente à base d'oxydes, d'oxysulfures et/ou d'oxyfluorures d'ions lanthanides et un support holographique pour la réception ou la restitution d'un hologramme de volume. La matière luminescente présente un spectre d'émission caractéristique et peut servir, combinée à l'hologramme de volume, à l'authentification et/ou à l'identification de produits tels que des matières ou des mélanges de matières.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10170447A EP2409849A1 (fr) | 2010-07-22 | 2010-07-22 | Combinaison d'une substance luminescente et d'un hologramme |
EP10170447.6 | 2010-07-22 |
Publications (2)
Publication Number | Publication Date |
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WO2012010665A2 true WO2012010665A2 (fr) | 2012-01-26 |
WO2012010665A3 WO2012010665A3 (fr) | 2012-06-07 |
Family
ID=42598759
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/EP2011/062552 WO2012010665A2 (fr) | 2010-07-22 | 2011-07-21 | Combinaison d'une matière luminescente et d'un hologramme |
Country Status (2)
Country | Link |
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EP (1) | EP2409849A1 (fr) |
WO (1) | WO2012010665A2 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN105667111A (zh) * | 2016-01-21 | 2016-06-15 | 张利平 | 一种可变化图案与文字的包装盒应用方法 |
DE102017103780A1 (de) | 2017-02-23 | 2018-08-23 | Tailorlux Gmbh | Verfahren zur Identifizierung eines Materials bzw. Materialgemisches |
Citations (7)
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US5453340A (en) | 1991-04-17 | 1995-09-26 | Nippon Paint Company, Ltd. | Photosensitive composition for volume hologram recording |
WO2000060527A1 (fr) | 1999-04-07 | 2000-10-12 | Sicpa Holding S.A. | Procede et dispositif d'excitation d'un materiau luminescent |
US6686074B2 (en) | 2001-03-16 | 2004-02-03 | Bundesdruckerei Gmbh | Secured documents identified with anti-stokes fluorescent compositions |
US6802992B1 (en) | 1997-03-05 | 2004-10-12 | Wieczoreck Juergen | Non-green anti-stokes luminescent substance |
WO2008000461A2 (fr) | 2006-06-27 | 2008-01-03 | Swiss Authentication Gmbh | Composition d'une substance luminescente |
US20090286165A1 (en) | 2008-05-16 | 2009-11-19 | Sony Corporation | Hologram laminate, hologram copy method, and hologram producing method |
DE102010028818A1 (de) | 2010-05-10 | 2011-11-10 | Swiss Authentication Research And Development Ag | Kombination von Lumineszenzstoffen |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5920058A (en) * | 1996-10-23 | 1999-07-06 | Weber; David C. | Holographic labeling and reading machine for authentication and security applications |
JP2002505973A (ja) * | 1998-03-10 | 2002-02-26 | ドゥ ラ リュ インターナショナル リミティド | 安全製品を製造する方法 |
US20040099740A1 (en) * | 2002-11-25 | 2004-05-27 | Chresand Thomas J. | Merchandising components for authenticating products, and combinations and methods utilizing the same |
DE10322794B4 (de) * | 2003-05-19 | 2011-08-11 | Bundesdruckerei GmbH, 10969 | Sensor für die Echtheitserkennung eines lumineszierenden Sicherheitselements eines Wertdokuments, Wertdokument sowie Verfahren zur Herstellung eines Wertdokuments |
EP1854642B1 (fr) * | 2006-05-12 | 2015-05-27 | JDS Uniphase Corporation | Dispositif de sécurité formé par un hologramme et une encre de distorsion des couleurs |
DE102007058888A1 (de) * | 2007-12-05 | 2009-06-10 | Informium Ag | Fälschungsschutz für Einweggebinde |
GB0819317D0 (en) * | 2008-10-22 | 2008-11-26 | Drinkwater Kenneth J | Novel holographic plastic micro particle taggant and combination security articles |
-
2010
- 2010-07-22 EP EP10170447A patent/EP2409849A1/fr not_active Withdrawn
-
2011
- 2011-07-21 WO PCT/EP2011/062552 patent/WO2012010665A2/fr active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5453340A (en) | 1991-04-17 | 1995-09-26 | Nippon Paint Company, Ltd. | Photosensitive composition for volume hologram recording |
US6802992B1 (en) | 1997-03-05 | 2004-10-12 | Wieczoreck Juergen | Non-green anti-stokes luminescent substance |
WO2000060527A1 (fr) | 1999-04-07 | 2000-10-12 | Sicpa Holding S.A. | Procede et dispositif d'excitation d'un materiau luminescent |
US6686074B2 (en) | 2001-03-16 | 2004-02-03 | Bundesdruckerei Gmbh | Secured documents identified with anti-stokes fluorescent compositions |
WO2008000461A2 (fr) | 2006-06-27 | 2008-01-03 | Swiss Authentication Gmbh | Composition d'une substance luminescente |
US20090286165A1 (en) | 2008-05-16 | 2009-11-19 | Sony Corporation | Hologram laminate, hologram copy method, and hologram producing method |
DE102010028818A1 (de) | 2010-05-10 | 2011-11-10 | Swiss Authentication Research And Development Ag | Kombination von Lumineszenzstoffen |
Also Published As
Publication number | Publication date |
---|---|
WO2012010665A3 (fr) | 2012-06-07 |
EP2409849A1 (fr) | 2012-01-25 |
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