CN103625154B - A kind of optical anti-counterfeit element and use the product of this optical anti-counterfeit element - Google Patents
A kind of optical anti-counterfeit element and use the product of this optical anti-counterfeit element Download PDFInfo
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- CN103625154B CN103625154B CN201210299654.XA CN201210299654A CN103625154B CN 103625154 B CN103625154 B CN 103625154B CN 201210299654 A CN201210299654 A CN 201210299654A CN 103625154 B CN103625154 B CN 103625154B
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Abstract
The present invention is directed in the time adopting existing optical anti-counterfeit element to realize color of light change feature and exist color of light to become the defects such as feature is single, antifalse effect is not good, a kind of product that can overcome the optical anti-counterfeit element of above-mentioned defect and use this optical anti-counterfeit element is provided. optical anti-counterfeit element provided by the invention comprises base material, micro relief profile, color functional layer and reflecting layer, described base material has first surface and the second surface of mutual opposition, on the first surface of described base material, be coated with at least in part described micro relief profile, described color functional layer is distributed in the space between described micro relief profile, described reflecting layer is positioned on the second surface of described base material and covers at least in part the second surface of described base material, wherein, described micro relief profile is made up of the transparent or semitransparent image-forming component with focusing function and can carries out imaging to described color functional layer by described reflecting layer.
Description
Technical field
The present invention relates to optical anti-counterfeiting field, relate in particular to a kind of optical anti-counterfeit element and use this optics anti-The product of pseudo-element.
Background technology
Because becoming optical anti-counterfeit element, color of light there is unique visual effect and property easy to identify, so by wideThe general contour safety product of banknote, credit card, passport and marketable securities and other high added value product of being applied toIn product. Current color of light becomes anti-counterfeiting technology and mainly contains light change coating technology, liquid crystal light change technology, zero levelLight change and co-extrusion film etc.
Light becomes coating technology, and to be widely used in the public of the contour false proof marketable securities of banknote false proof, and it is by adoptingLight become coating technology, under different viewing angles, can present different colors, and its be convenient to describe,Be easy to public's identification and cannot utilize the electronic equipments such as camera, scanner, printer imitate or copy,There is very high anti-counterfeit capability.
Liquid crystal light change technology is a kind of light change technology having with angle variable color. Utilize cholesteric liquid crystal materialHaving masses with angle variable color and unique polarization properties exploitation can recognition feature combination with hidden information spyThe anti-fake mark of levying is one of developing direction of current Techniques of Optical Security. The nineties initial stage, ReveoCompany first applied for liquid crystal material as variable color and polarization pigment use patent US5599412.Rolic company has made this type of false proof unit by cholesteryl liquid crystal in conjunction with directed imaging technique (LPP/LCP)Part, has this Security element and also possesses polarization in presenting different colours and hide changing with angleCharacteristics of image.
It is the grating knot of employing cycle between 200-400nm that zero order light becomes (zero order light change diffraction image)Structure, on it, landfill high-index material forms. Because the micro-structural cycle is less than visible wavelength, it is AsiaWave length grating, therefore can only reproduce zero order light. Zero level light variation image reproduces figure in the time of self rotation with in surfaceThe main color of picture obviously changes, and change color is specific, describable, and playback light is inclined to one sideLight shakes.
Co-extrusion film is a kind of optical anti-counterfeit element of interfering based on Bragg, and this Security element adopts refractive indexBragg interference effect between different multilayer films forms the change color feature changing with angle.
More than be all the representative that color of light becomes anti-counterfeiting technology, but their feature is all to adopt to have diffractionOr interfere the micro-structural of function selectively to absorb incident light, thereby control special angle emergent lightWavelength becomes feature to produce color of light.
CN101563640、CN101443692、CN101120139、CN101346244、US5712731、US0034082、US4765656、US4892336、CN1271106、CN1552589Deng in patent documentation, disclose same class on two surfaces of base material respectively with microlens array and micro-The Security element of picture and text array, wherein micro-picture and text array is positioned near the focal plane of microlens array, passes throughMicrolens array reproduces and has certain depth of field or present dynamically More's amplification of micro-picture and text arrayThe pattern of effect. In the Security element of this structure, microlens array and micro-picture and text array lay respectively atIn plane separately, therefore, in manufacturing process, first need micro-picture and text array and microlens array to divideDo not carry out master preparation, then aborning on the both sides of film substrate respectively to micro-picture and text array and micro-Lens arra carries out batch duplicating. In the time adopting the Security element of this structure to realize color of light change feature,The arrangement mode that micro-picture and text array need to be set is the interspersed strip grid of different colours, and its defect is:(1) this structural requirement microlens array, micro-picture and text array are periodic arrangement, in the time making masterIts circular error is at submicron order, and therefore manufacture difficulty is high; (2) in process of production, need to be at base materialTwo surfaces on process respectively successively, therefore technological process complexity; (3) in process of production,The contraposition problem that need to solve microlens array and micro-picture and text array, therefore process controllability is low; (4) wholeThe thickness of individual Security element is at least the focal length of adopted microlens array, makes this element application in heightThe safety anti-fake product particularly difficulty of opened window safety line is enhanced and applicability correspondingly reduces.
CN101563640 discloses a kind of catoptric arrangement, in this catoptric arrangement, by microlens array andOn the overlapping base material that is produced on Security element of micro-picture and text array, microlens array and micro-picture and text array are positioned atOn the same side of base material, be coated with reflecting layer on the opposite side of base material, wherein micro-picture and text array is by reflectionThe position of the virtual image that layer forms is positioned near the focal plane of microlens array, thereby microlens array is borrowedHelp the reflecting layer on base material opposite side to carry out imaging to micro-picture and text array. This Security element structure is in the time producingFirst need on base material, process micro-picture and text array layer, reprocess on this basis microlens array layer, itsEssence also belongs to microlens array and micro-picture and text array lays respectively in plane separately. Therefore when adopting thisWhen the optical anti-counterfeit element of kind of structure is realized color of light and is become feature, in the time making this optical anti-counterfeit element stillThere is first three point defect in four point defects of above mentioning, and, due to micro-picture and text array and micro-Lens array is overlapped, phase mutual interference, thereby affects the quality of institute's sample color light change feature, more enters oneStep ground has reduced antifalse effect and the practical value of this optical anti-counterfeit element.
Summary of the invention
The present invention is directed to the above-mentioned defect existing in existing optical anti-counterfeit element, provide on one can overcomeState the optical anti-counterfeit element of defect and use the product of this optical anti-counterfeit element.
The invention provides a kind of optical anti-counterfeit element, this optical anti-counterfeit element comprise base material, micro relief profile,Color functional layer and reflecting layer, described base material has first surface and the second surface of mutual opposition, described inOn the first surface of base material, be coated with at least in part described micro relief profile, described color functional layer distributesIn space between described micro relief profile, described reflecting layer be positioned on the second surface of described base material andCover at least in part the second surface of described base material, wherein, described micro relief profile is by transparent or semi-transparentThe bright image-forming component with focusing function forms and can be by described reflecting layer to described color meritErgosphere carries out imaging.
The present invention also provides a kind of product that uses above-mentioned optical anti-counterfeit element.
Because the product of optical anti-counterfeit element according to the present invention and this optical anti-counterfeit element of use comprises micro-Embossment structure, color functional layer, base material and reflecting layer, micro relief profile is positioned in a wherein side of base material,Reflecting layer is positioned on the opposite side of base material, and color functional layer is distributed in the space between micro relief profileIn, so optical anti-counterfeit element according to the present invention is based on geometric optical imaging principle but not based on generallyDiffraction or interference mechanism, and compared with the optical anti-counterfeit element of realizing color of light change feature with tradition, its toolThere is following advantage: (1) does not exist the employing lenticule mentioned in background technology part and micro-picture and text arrayDifficult point and defect when traditional optical Security element is realized color of light change feature, simultaneously of the present invention micro-The concrete form of embossment structure and arrangement can be arranged arbitrarily by required anti-counterfeiting characteristic, needn't be for micro-picture and textArray does corresponding design; (2) because optical anti-counterfeit element according to the present invention is by described micro-embossment knotImaging is carried out to described color functional layer in structure and described reflecting layer, so it is with direct by micro relief profileThe thickness requirement that imaging compares structure to color functional layer greatly reduces, thereby makes this optical anti-counterfeiting unitPart is thinner, is specially adapted to opened window safety line.
Brief description of the drawings
Fig. 1 is the profile of a kind of optical anti-counterfeit element of implementation according to the present invention;
Fig. 2 is according to the profile of the optical anti-counterfeit element in employing sawtooth pattern of the present invention reflecting layer;
Fig. 3 is cuing open according to the optical anti-counterfeit element that is coated with protective layer on micro relief profile of the present inventionFace figure; And
Fig. 4 a, 4b, 4c show respectively employing post lens according to the present invention as micro relief profileOptical anti-counterfeit element overlook observation figure, perspective view and partial cross section figure.
Detailed description of the invention
Describe in detail according to optical anti-counterfeit element of the present invention and use this light below in conjunction with accompanying drawingLearn the product of Security element, to understand better thought of the present invention. Should be appreciated that described accompanying drawing andDescribe just description of the preferred embodiment of the present invention in detail, not limit by any way the present inventionScope.
As shown in Figure 1, according to the optical anti-counterfeit element 1 of one embodiment of the present invention comprise base material 2,Micro relief profile 3, color functional layer 4 and reflecting layer 5, described base material 2 has first of mutual oppositionSurface and second surface, be coated with described micro-embossment knot at least in part on the first surface of described base material 2Structure 3, described color functional layer 4 is distributed in the space between described micro relief profile 3, described reflectionLayer 5 is positioned on the second surface of described base material 2 and covers at least in part the second surface of described base material 2,Wherein, described micro relief profile 3 formed by the transparent or semitransparent image-forming component with focusing function andAnd can carry out imaging to described color functional layer 4 by described reflecting layer 5, thereby produce different observationColor under angle and/or light and shade change.
Micro relief profile 3 shown in Fig. 1 can be by multiple transparent or semitransparent focusing functions that haveImage-forming component arrange according to randomness arrangement, no periodic array, periodic arrangement, local period orThe structure that their any combination forms, wherein, the cycle that periodic arrangement or local period are arrangedCan be 10 microns to 200 microns, be preferably 40 microns to 100 microns. Image-forming component can be ballFace lenticule, but it will be appreciated by those skilled in the art that it can also be: and microlens structure, this is micro-Lens arrangement can be refractive lenticule, diffraction type lenticule or their splicing or combination, wherein foldingThe type lenticule of penetrating can choose spherical microlens, ellipsoid lenticule, cylindrical microlenses or other are several arbitrarilyThe lenticule based on geometric optics of what shape, diffraction type lenticule can be chosen humorous diffraction microlens, flatFace diffraction microlens, fresnel's zone plate; Sine, ellipse, hyperbolic, parabolic shape structure; Above-mentioned knotThe splicing of structure and combination. The focal length of image-forming component can be 10 microns to 200 microns, is preferably 20 micro-Rice is to 60 microns. In addition, be less than 15 microns according to the working depth of micro relief profile 3 of the present invention,Be preferably 0.5 micron to 10 microns. Space between micro relief profile 3 is less than 10 microns, preferably littleIn 2 microns.
Because the micro relief profile 3 in optical anti-counterfeit element 1 according to the present invention is right by reflecting layer 5Imaging is carried out in the virtual image of color functional layer 4 in reflecting layer 5, therefore micro relief profile 3 and reflecting layer 5Between distance be approximately to utilize micro relief profile 3 and color functional layer 4 direct for obtaining with textsEffect (being that micro relief profile and color functional layer lay respectively in two opposites of base material) required distanceFrom 1/2 left and right, like this thickness of base material 2 can be just 5 microns to 100 microns, be preferably 10Micron to 30 microns, thereby can ensure that optical anti-counterfeit element product according to the present invention is to THICKNESS CONTROLRequirement, make according to the thickness of this optical anti-counterfeit element of the present invention thinlyyer, facilitated this optics anti-The application of pseudo-element, makes optical anti-counterfeit element according to the present invention be particularly suitable for opened window safety line.
In addition, the master of micro relief profile 3 can be realized by micro fabrication, specifically, and canTo realize by techniques such as optical exposure, electron beam exposures, can also come in conjunction with techniques such as hot melt backflows realExisting, but should be appreciated that their implementation method is not limited to said method.
Can realize by modes such as coating, printing, depositions according to reflecting layer 5 of the present invention. Described reflectionLayer 5 material adopting can be one or more in ink, pigment, dyestuff, metal, medium etc.Combination.
Reflecting layer 5 can also become layer for liquid crystal light, typically for example can adopt cholesteric liquid crystal material realExisting reflecting layer 5, changes and produces the color of light such as green change is blue, red stain is green with viewing angle thereby for example can realizeBecome feature. Liquid crystal light becomes layer and can produce in batches by modes such as coating, printings.
Reflecting layer 5 can also become layer for zero order light. Described zero order light becomes layer and can comprise and cover base material 2Lip-deep sub-wavelength grate structure, and in the cycle of described sub-wavelength grate structure, grooved and groove depthAt least one be variable, wherein, the cycle of sub-wavelength grate structure can be 50nm to 500nm,Be preferably 200 to 400nm, the groove depth of sub-wavelength grate structure can be 10nm to 500nm, preferablyFor 50nm-200nm, the grooved of sub-wavelength grate structure can be in sinusoidal, rectangle, zigzag etc.At least one. Sub-wavelength grate structure can pass through the micro-nano processing sides such as optical exposure, electron beam exposureFormula obtains, and carries out batch duplicating by micro-nano processing modes such as ultraviolet cast, mold pressing, nano impressions. ZeroLevel light becomes layer can also comprise the single or multiple lift coating structure covering on sub-wavelength grate structure. Individual layerCoating structure can be formed by high-index material. Multilayer coating structure can be interfere type laminated construction, and this is dryRelate to type laminated construction and form Fabry-pool sieve resonator, for example interfere type laminated construction can be traditional lightBecome membrane structure, i.e. " reflecting layer/low refractive index dielectric layer/absorbed layer " three layers of coating structure, wherein, shouldThe absorbed layer that light becomes in membrane structure contacts with sub-wavelength grate structure; Or can be color coating, " anti-Penetrate layer/high refractive index medium layer/absorbed layer " three-decker, wherein the absorbed layer in this color coating is with sub-Wavelength grate structure contact; Or there is the dielectric layer lamination structure of different refractivity, for example " high foldingPenetrate rate dielectric layer/low refractive index dielectric layer/high refractive index medium layer " three layers of coating structure; Wherein, above-mentionedThe material in the reflecting layer in interfere type laminated construction and color coating can be the material with high reflectance,As gold, silver, copper, aluminium etc., the material of absorbed layer is the approaching material of refractive index and absorptivity, for exampleCan be semi-metallic (as silicon, germanium etc.), can be also metal material or its alloy (as chromium, copper,Nickel, nichrome etc.), the material of the high refractive index medium layer in dielectric layer lamination structure is that refractive index is highIn 1.7 dielectric material, such as zinc sulphide, titanium dioxide etc., the material of low refractive index dielectric layer is foldingThe rate of penetrating is less than or equal to 1.7 dielectric material, such as magnesium fluoride, silica, ice crystal etc.
Reflecting layer 5 can also become film for co-extrusion light, and can directly co-extrusion light be become to film as base material 2.
Reflecting layer 5 can also be interfere type multilayer coating structure, this interfere type multilayer coating structure forming methodIn cloth-and pool sieve resonator, its white light to incident has selection effect, makes emergent ray only comprise certainA little wave bands, thus specific color formed; In the time that incident angle changes, light path on the other side becomesChange, interfere wave band to change, thereby cause the color of presenting to observer also to change thereupon, thus shapeBecome light to become effect. Wherein, the structure of described interfere type multilayer coating structure can adopt above-mentioned combination zero levelLight becomes described any one structure of multilayer coating structure of layer, so repeat no more here.
In reflecting layer 5, can also be formed with pierced pattern, wherein said pierced pattern can be macroscopic pattern,Micro-word/micro-word array, meticulous lines etc., thus can realize better antifalse effect. As hollow out figureCase is micro-word array, and micro relief profile 3 can produce More's amplification to micro-word, forms with movingThe pattern characteristics of sense or the depth of field.
Preferably, reflecting layer 5 can have the embossment structure that can modulate reverberation by demand,Comprise plane, curve form structure or their any combination, for example, reflecting layer 5 can be sawtooth pattern,Plane micro-reflector type, sinusoidal pattern reflecting surface.
For example, Fig. 2 shows the optical anti-counterfeiting that reflecting layer 5 according to the present invention is sawtooth pattern catoptric arrangementThe profile of element 1. Incident light is incident to from the micro relief profile 3 being positioned at the first surface of base material 2Be positioned at exit direction behind the reflecting layer 5 on the second surface of base material 2 inclined-plane by sawtooth pattern reflecting layer 5Angle of inclination beta determines. An advantage in zigzag reflecting layer 5 can be controlled and form particular color or imageViewing angle, for example, for the sawtooth pattern reflecting layer 5 shown in Fig. 2, at optical anti-counterfeit element 1Right-angle view angle on can observe by described reflecting layer 5 logical to the virtual image of 4 one-tenth of color functional layersCross micro relief profile 3 color afterwards, if for example described reflecting layer 5 is Al layer, color functional layer 4For blue nano ink, right-angle view angle, viewed color is blue.
In addition, be positioned on the second surface of base material 2 of described optical anti-counterfeit element 1 for modulating reflectionThe master in the reflecting layer 5 of light direction can be realized by micro fabrication, specifically, can pass throughThe technique such as optical exposure, electron beam exposure realizes, and certainly can also come in conjunction with techniques such as hot melt backflows realExisting, but its implementation is not limited to said method. And in the time making optical anti-counterfeit element 1,Can be by the master in reflecting layer 5 being copied to by UV imprint process on the second surface of base material 2,Thereby on the second surface of base material 2, form reflecting layer 5.
Color functional layer 4 shown in Fig. 1 is distributed in the space between micro relief profile 3, and it is micro-floatingIn the plane at carving structure 3 places, shared area ratio is that dutycycle is q(0 < q < 1), correspondingly, micro-The dutycycle of embossment structure 3 is 1-q. Space between micro relief profile 3 hour, causes qBe worth less, thereby it is leading that micro relief profile 3 is planar occupied. Like this, when reflecting layer 5 is for flatWhen in face reflection-type the reflecting layer, in the time vertically observing through micro relief profile 3, collected color or imageInformation is from the color or the image information that are provided by the reflecting layer 5 of micro relief profile 3 imagings, for example,When reflecting layer 5 adopt be Al reflecting layer time, the color providing is silvery white; And when tilting to see throughWhen micro relief profile 3 is observed, collected color or image information are carried out free micro relief profile 3 imagingsThe color functional layer 4 color or the image information that provide that are reflected 5 one-tenth virtual image of layer, for example, work as faceWhen what look functional layer 4 adopted is blue nano ink, color functional layer 4 is by 5 one-tenth, reflecting layerThe virtual image is blue, then by all-transparent micro relief profile 3, viewed color is blue.
In addition, as another possibility, when the color functional layer 4 in Fig. 1 is transparent or semi-transparentWhen bright structure, this color functional layer 4 can cover micro relief profile 3. Now should be appreciated that owing to coveringCover color functional layer 4 on micro relief profile 3 thinner, and space between micro relief profile 3In color functional layer 4 relatively thick, therefore cover 4 of color functional layers on micro relief profile 3In matter, do not affect the contrast between micro relief profile 3 and color functional layer 4, so still can expireFoot is in color or image comparison perpendicular to when favouring micro relief profile 3 place planes and observeDegree.
Can produce in batches by modes such as coating, printing, depositions according to color functional layer 4 of the present invention.The material that described color functional layer 4 adopts can be one or more in ink, pigment, dyestuff etc.Combination.
Color functional layer 4 can also become layer for liquid crystal light, typically for example can adopt cholesteric liquid crystal materialRealize color functional layer 4, thus for example can realize with viewing angle change produce green changes indigo plant, red stain is greenBecome feature etc. color of light. Liquid crystal light becomes layer and can produce in batches by modes such as coating, printings.
Preferably, in color functional layer 4, can also be formed with pierced pattern, wherein said pierced pattern canThink macroscopic pattern, micro-word/micro-word array, meticulous lines etc., thereby can realize better false proofEffect. If pierced pattern is micro-word array, micro relief profile 3 can be by reflecting layer 5 to micro-literary compositionWord produces More and amplifies, and forms the pattern characteristics with innervation or the depth of field.
Preferably, can be local transparent at least according to the base material 2 in optical anti-counterfeit element 1 of the present inventionColourless or coloured media layer, and base material 2 can be the transparent dielectric film that one deck is single, for example, adoptWith PET film, PVC film etc., can certainly be that surface band has functional coating (such as embossed layer)Transparent dielectric film can also be the multilayer film through being composited.
Preferably, according to forming on the second surface of the base material 2 of optical anti-counterfeit element 1 of the present inventionHave optical grating construction, reflecting layer 5 covers on this optical grating construction, thereby diffraction image information is provided.
Preferably, can be on the surface of micro relief profile 3 protective mulch 6(as shown in Figure 3), withMicro relief profile 3 according to the present invention is protected, thereby increased according to optical anti-counterfeiting of the present invention unitThe service life of part 1. Wherein, protective layer 6 can be by techniques such as coating, printing, deposition, landfillsForm, and it can be one or more layers structure, and protective layer 6 is preferably transparent. Work as protectionWhen layer 6 directly covers micro relief profile 3, the refractive index of protective layer 6 is less than the refraction of micro relief profile 3Rate and both refractive indexes at least differ 0.1, and preferably both refractive index differences are not less than 0.3; And work asWhen protective layer 6 does not cover micro relief profile 3 completely in the degree of depth, protective layer 6 and micro relief profile 3Between refractive index can be unrestricted.
Preferably, according to the upper surface of the described micro relief profile 3 in optical anti-counterfeit element 1 of the present invention,In the lower surface of described micro relief profile 3, described base material 2, the upper surface in described reflecting layer 5, described inOn one or more in reflecting layer 5, in the lower surface in described reflecting layer 5 etc., can there is functional layer (notIllustrate), and this functional layer can have diffraction light change feature, interference light becomes feature, micro-nano structure spyLevy, print characteristics, partially metallised feature, fluorescent characteristics, for machine-readable magnetic, optical, electrical, radiationOne or more features in property feature etc.
Preferably, according to being coated with tack coat on the one or both sides of optical anti-counterfeit element 1 of the present invention(not shown), so that can be by optical anti-counterfeit element 1 according to the present invention and protected object bondingTogether. When concrete enforcement, adhesive glue can be coated on the arbitrary surfaces of optical anti-counterfeit element 1,Tack coat can cover that it is coated with surperficial partly or entirely.
Fig. 4 a, 4b, 4c show respectively to overlook from micro relief profile 3 tops and observe micro relief profile 3The stereochemical structure signal of arrangement, optical anti-counterfeit element 1 and the partial cross section intercepting, wherein zones of differentDefined the post lens arrangement that different directions is arranged, described post lens width is 30 μ m, cycles 32 μ m,Highly approximately 9 μ m. Described post lens surface is coated with the color functional layer 4 being formed by red ink. ReflectionLayer 5 is Al layer. Base material 2 is PET, and thickness is 19 μ m. The effect that this example structure realizes is:Above the first surface of base material 2, overlook while observation, with the change of viewing angle, whole region can be producedRaw with " red---the white " effect that color is rolled and light and shade changes.
Optical anti-counterfeit element 1 according to the present invention is particularly suitable for being made into opened window safety line. Described safety lineThickness be not more than 50 μ m. Cheque paper with described opened window safety line is used for banknote, credit card, protectsAccording to false proof and each wrapping paper, the bag of all kinds of high safety products such as, marketable securities and high value added productMounted box etc.
Optical anti-counterfeit element 1 according to the present invention also can be used as label, mark, wide, transparent window,Overlay films etc., can stick on various article by various bonding mechanisms, for example, transfer to banknote, creditBlock on contour safety product and high value added product.
In addition, in the time producing according to optical anti-counterfeit element 1 of the present invention, can be at the first table of base material 2On face, for example copy and form micro relief profile layer 3 by UV imprint process, at the second surface of base material 2On be for example coated with, printing or deposition of reflective layer 5, in the space between micro relief profile layer 3 and/or itsFor example coating, print color functional layer 4 on surface.
Producing according to the another kind of method of optical anti-counterfeit element 1 of the present invention is to divide on different base material 2Do not make reflecting layer 5 and micro relief profile 3, then through combination process as known in the art, the two is multipleBe combined. Both compound tenses, with the film of micro relief profile 3 and can with the film in reflecting layer 5To be back-to-back compound, what the distance between micro relief profile 3 and reflecting layer 5 was two-layer base material is thickDegree adds the thickness of compound adhesive; Also can be with the film of micro relief profile 3 and with reflecting layer 5Pellicular front is compound to same direction, and the distance between micro relief profile 3 and reflecting layer 5 is one deck whereinThe thickness of base material adds the thickness of compound adhesive.
Some preferred embodiment of the present invention has below only exemplarily been described. But art technology peopleMember is appreciated that and is not departing under the prerequisite of design of the present invention and spirit, can make the present invention variousEquivalents or amendment, and the technical scheme so obtaining also should belong to protection scope of the present invention.
Claims (24)
1. an optical anti-counterfeit element, this optical anti-counterfeit element comprises base material, micro relief profile, colorFunctional layer and reflecting layer, described base material has first surface and the second surface of mutual opposition, described base materialFirst surface on be coated with at least in part described micro relief profile, described color functional layer is distributed in instituteState in the space between micro relief profile, described reflecting layer is positioned on the second surface of described base material and at leastPartly cover the second surface of described base material, wherein, described micro relief profile is by transparent or semitransparentHave focusing function image-forming component composition and also can be by described reflecting layer to described color functional layerCarry out imaging so that color and/or light and shade that described optical anti-counterfeit element has under different viewing angles change.
2. optical anti-counterfeit element according to claim 1, wherein, described color functional layer isBright or translucent structure, described color functional layer also covers described micro relief profile at least in part.
3. optical anti-counterfeit element according to claim 1 and 2, wherein, described micro relief profileAnd the distance between described reflecting layer have described in being the image-forming component of focusing function focal length two/One.
4. optical anti-counterfeit element according to claim 1 and 2, wherein, described image-forming componentBe arranged as one in periodic arrangement, no periodic array, randomness arrangement and local period arrangementPlant or its combination.
5. optical anti-counterfeit element according to claim 4, wherein, the described cycle be 10 microns extremely200 microns.
6. optical anti-counterfeit element according to claim 4, wherein, the described cycle be 40 microns extremely100 microns.
7. optical anti-counterfeit element according to claim 1 and 2, wherein, described image-forming componentFocal length is 10 microns to 200 microns.
8. optical anti-counterfeit element according to claim 1 and 2, wherein, described image-forming componentFocal length is 20 microns to 60 microns.
9. optical anti-counterfeit element according to claim 1 and 2, wherein, described micro relief profileWorking depth be less than 15 microns.
10. optical anti-counterfeit element according to claim 1 and 2, wherein, described micro relief profileWorking depth be 0.5 micron to 10 microns.
11. optical anti-counterfeit elements according to claim 1 and 2, wherein, described micro relief profileBetween space be less than 10 microns.
12. optical anti-counterfeit elements according to claim 1 and 2, wherein, described micro relief profileBetween space be less than 2 microns.
13. optical anti-counterfeit elements according to claim 1 and 2, wherein, described micro relief profileSurperficial protected seam directly cover, the refractive index of described protective layer is less than the refraction of described micro relief profileRate, and the difference of both refractive indexes is not less than 0.1.
14. optical anti-counterfeit elements according to claim 13, wherein, the refraction of described protective layerThe difference of the refractive index of rate and described micro relief profile is not less than 0.3.
15. optical anti-counterfeit elements according to claim 1 and 2, wherein, described reflecting layer is oilThe combination of one or more in China ink, pigment, dyestuff, metal.
16. optical anti-counterfeit elements according to claim 1 and 2, wherein, described reflecting layer is by liquidBrilliant light change layer, zero order light change layer, co-extrusion light become the interfere type of film and formation Fabry-pool sieve resonatorOne or more formations in multilayer coating structure.
17. optical anti-counterfeit elements according to claim 1 and 2, wherein, shape in described reflecting layerBecome to have pierced pattern.
18. optical anti-counterfeit elements according to claim 1 and 2, wherein, described reflecting layer hasThe embossment structure that can modulate reverberation.
19. optical anti-counterfeit elements according to claim 1 and 2, wherein, described color functional layerFor one or more the combination in ink, pigment, dyestuff.
20. optical anti-counterfeit elements according to claim 1 and 2, wherein, described color functional layerFor liquid crystal light becomes layer.
21. optical anti-counterfeit elements according to claim 1 and 2, wherein, described color functional layerIn be formed with pierced pattern.
22. optical anti-counterfeit elements according to claim 1 and 2, wherein, described optical anti-counterfeiting unitPart also comprises the tack coat on the one or both sides that are positioned at described optical anti-counterfeit element.
23. optical anti-counterfeit elements according to claim 1 and 2, wherein, second of described base materialOn surface, be formed with optical grating construction, described reflecting layer covers on described optical grating construction.
24. use according to the optical anti-counterfeit element described in any one claim in claim 1 to 23Product.
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| CN201210299654.XA CN103625154B (en) | 2012-08-21 | 2012-08-21 | A kind of optical anti-counterfeit element and use the product of this optical anti-counterfeit element |
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| CN201210299654.XA CN103625154B (en) | 2012-08-21 | 2012-08-21 | A kind of optical anti-counterfeit element and use the product of this optical anti-counterfeit element |
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| CN103625154A CN103625154A (en) | 2014-03-12 |
| CN103625154B true CN103625154B (en) | 2016-05-18 |
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| CN104118236B (en) * | 2014-07-10 | 2016-08-24 | 中钞特种防伪科技有限公司 | The micro-reflecting element array optical Security element of a kind of focusing and valuables |
| CN105313529B (en) * | 2014-08-01 | 2017-07-28 | 中钞特种防伪科技有限公司 | Optical anti-counterfeit element and the anti-fake product using the optical anti-counterfeit element |
| CN105319628B (en) * | 2014-08-01 | 2018-11-20 | 中钞特种防伪科技有限公司 | A kind of optical anti-counterfeit element |
| CN104385800B (en) * | 2014-10-16 | 2017-10-24 | 中钞特种防伪科技有限公司 | Optical anti-counterfeit element and optical anti-counterfeiting product |
| CN104834029B (en) * | 2015-04-16 | 2016-09-28 | 上海天臣包装材料有限公司 | Micro-optical device of double-face imaging and its preparation method and application |
| CN107433817A (en) * | 2016-05-27 | 2017-12-05 | 苏州苏大维格光电科技股份有限公司 | A kind of decorating film and ambetti |
| CN107433816A (en) * | 2016-05-27 | 2017-12-05 | 苏州苏大维格光电科技股份有限公司 | Decorating film and ambetti |
| CN107993561B (en) * | 2016-10-27 | 2024-04-16 | 上海彩丞新材料科技有限公司 | Three-dimensional anti-counterfeiting microlens slice |
| CN108454265B (en) * | 2017-02-20 | 2023-09-08 | 中钞特种防伪科技有限公司 | Anti-counterfeiting element and optical anti-counterfeiting product |
| CN107719851A (en) * | 2017-09-27 | 2018-02-23 | 中国科学院光电技术研究所 | One kind becomes pattern anti-fake relief type security devices |
| CN108254937B (en) * | 2017-12-19 | 2021-03-23 | 浙江理工大学 | Double-imaging method, device and application thereof |
| JP7342854B2 (en) * | 2018-03-20 | 2023-09-12 | ソニーグループ株式会社 | image display device |
| CN111716937B (en) * | 2019-03-19 | 2021-10-26 | 中钞特种防伪科技有限公司 | Optical anti-counterfeiting element and optical anti-counterfeiting product |
| CN114590053B (en) * | 2020-12-04 | 2023-08-18 | 中钞特种防伪科技有限公司 | Optical anti-counterfeiting element and preparation method thereof |
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| KR20010069185A (en) * | 2000-04-19 | 2001-07-23 | 김찬웅 | Securities for making advertisement and a lottery ticket and magnetic stripe |
| DE102005006277B4 (en) * | 2005-02-10 | 2007-09-20 | Ovd Kinegram Ag | Method for producing a multilayer body |
| JP5515244B2 (en) * | 2008-07-04 | 2014-06-11 | 凸版印刷株式会社 | Display and labeled goods |
| CN101434176B (en) * | 2008-12-25 | 2012-11-07 | 中钞特种防伪科技有限公司 | Optical anti-counterfeiting element and product with the same |
| JP5499301B2 (en) * | 2010-12-08 | 2014-05-21 | 独立行政法人 国立印刷局 | Latent image printed matter |
| CN103358808B (en) * | 2012-03-28 | 2015-12-16 | 中钞特种防伪科技有限公司 | A kind of optical anti-counterfeit element and use the product of this optical anti-counterfeit element |
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Address after: 100070 No. 6 Spark Road, Science City, Beijing, Fengtai District Patentee after: ZHONGCHAO SPECIAL SECURITY TECHNOLOGY Co.,Ltd. Patentee after: China Banknote Printing and Minting Group Co.,Ltd. Address before: 100070 No. 6 Spark Road, Science City, Beijing, Fengtai District Patentee before: ZHONGCHAO SPECIAL SECURITY TECHNOLOGY Co.,Ltd. Patentee before: CHINA BANKNOTE PRINTING AND MINTING Corp. |
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