CN103576216B - A kind of optical anti-counterfeit element and adopt the anti-fake product of this optical anti-counterfeit element - Google Patents
A kind of optical anti-counterfeit element and adopt the anti-fake product of this optical anti-counterfeit element Download PDFInfo
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- CN103576216B CN103576216B CN201210302871.XA CN201210302871A CN103576216B CN 103576216 B CN103576216 B CN 103576216B CN 201210302871 A CN201210302871 A CN 201210302871A CN 103576216 B CN103576216 B CN 103576216B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
- G02B3/0037—Arrays characterized by the distribution or form of lenses
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- 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
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- 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
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- 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
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
- G02B3/0037—Arrays characterized by the distribution or form of lenses
- G02B3/0043—Inhomogeneous or irregular arrays, e.g. varying shape, size, height
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
- G02B3/0037—Arrays characterized by the distribution or form of lenses
- G02B3/0062—Stacked lens arrays, i.e. refractive surfaces arranged in at least two planes, without structurally separate optical elements in-between
- G02B3/0068—Stacked lens arrays, i.e. refractive surfaces arranged in at least two planes, without structurally separate optical elements in-between arranged in a single integral body or plate, e.g. laminates or hybrid structures with other optical elements
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- B42D2033/20—
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- B42D2033/24—
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- 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
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- 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
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
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- Finance (AREA)
- Credit Cards Or The Like (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
Abstract
The color variation characteristic that the present invention is directed to existing Techniques of Optical Security is simple, design space is narrow, the defects such as anti-counterfeiting characteristic is single, the optical anti-counterfeit element that can overcome this defect is provided, it comprises color functional layer, there is the mutually first surface of opposition and the base material of second surface and to incident light and the surface relief structure layer modulated from the direction of the light of color functional layer, wherein base material, surface relief structure layer and color functional layer be arranged as one of the following: described first surface is coated with surface relief structure layer at least in part, described second surface is coated with color functional layer at least in part, or described first surface is coated with color functional layer at least in part, the surface of color functional layer is coated with surface relief structure layer at least in part, or described first surface and second surface are coated with color functional layer all at least in part, the surface being positioned at the color functional layer on first surface is coated with surface relief structure layer at least in part.
Description
Technical field
The present invention relates to optical anti-counterfeiting field, particularly relate to a kind of optical anti-counterfeit element and adopt the anti-fake product of this optical anti-counterfeit element.
Background technology
The public that light change coating technology is widely used in the contour false proof securities of banknote is false proof, it can present different colors under different viewing angles, be convenient to describe, be easy to the public identify, and the electronic equipments such as camera, scanner, printer cannot be utilized to imitate or copy, so have very high anti-counterfeit capability.
But because light becomes the time that products application has had many decades, simple light becomes the demand that coating technology can not meet anti-counterfeit field well.Light becomes coating and has become with hollow out, holography, light and join peer to peer technology and combine and provide new anti-counterfeiting characteristic.Such as, propose in patent US5766738, US6114018 and US7729026 to become matching characteristic by selecting suitable light change thickness of coating and color to realize light.SICPA company of Switzerland forms optically variable pigments (OVP) by pulverizing five layers of light change coating structure with symmetrical structure, and then obtains photochromatic printing ink (OVI), and it can be combined with printing technology, and is widely applied in the multiple banknote in the world.Further developing as OVI, in existing smooth structure changes, increase one deck magnetosphere just define light metamagnetism ink (OVMI) i.e. SPARK technology, this technology makes OVMI particle along magnetic induction line direction oriented alignment, thus can form specific picture and text structure by induced by magnetic field.When particle arrangement has the change of specific rule in OVMI, the optical signature such as innervation, convergent-divergent (asking for an interview patent US7517578B2) can be produced.But the oriented alignment due to light metamagnetism particle needs to rely on magnetic field, therefore is subject to the restriction of magnetic field shape, can not design arbitrarily, and need specific orientation equipment and technique to shape.In order to overcome this shortcoming, WO2011066990A2 and WO2011066991A2 discloses a kind of method utilizing the micro-anti-mirror structural simulation curved surface in surface, by accurately controlling inclination angle and the position angle of each micro-anti-mirror, on micro-anti-mirror, deposit light become coating structure, the effect of OVMI can be realized, it is advantageous that the angle information that can control arbitrarily each pixel, realize the accurate control to image information and details.
It is a kind of light change technology had with angle variable color that liquid crystal light becomes.Utilizing cholesteric liquid crystal material to develop with angle variable color and unique polarization properties, to have the hide Info anti-fake mark of feature of popular identifiable design integrate features be one of developing direction of current Techniques of Optical Security.At the nineties initial stage, first, Reveo company has applied for the patent US5599412 used as variable color and polarization pigment by liquid crystal material.Rolic company has made this type of Security element by cholesteryl liquid crystal in conjunction with directed imaging technique (LPP/LCP), make this Security element have with angle change present different colours while also possess polarization hidden image feature.
It is that landfill high-index material is formed by the optical grating construction of employing cycle between 200-400nm and on optical grating construction that zero order light becomes (zero order light change diffraction image).Because the cycle of optical grating construction is less than visible wavelength, institute thinks sub-wave length grating, therefore can only reproduce zero order light.When zero level light variation image rotates in own layer, the domain color of reproduced image obviously changes, and color change is specific, describable, and playback light is polarized light.
It is the optical anti-counterfeit element of interfering based on Bragg that co-extrusion light becomes film, and the Bragg interference effect between the multilayer film that this optical anti-counterfeit element employing refractive index is different forms the color variation characteristic with angle change.
Technology and the optical anti-counterfeit element that adopts these light change technology the to be formed defect due to they self technical characterstic, component structure, manufacture craft is become with glazing, the color that they can be formed is partially dark, anti-counterfeiting characteristic is single, design space is narrow, thus limits its anti-counterfeit capability.
Summary of the invention
The color variation characteristic that the present invention is directed to existing Techniques of Optical Security is simple, design space is narrow, anti-counterfeiting characteristic is single, need specific complicated technology and equipment to form the defects such as complicated effect, provides a kind of and can overcome the optical anti-counterfeit element of above-mentioned defect and adopt the anti-fake product of this optical anti-counterfeit element.
The invention provides a kind of optical anti-counterfeit element, this optical anti-counterfeit element comprises base material, surface relief structure layer and color functional layer, described base material comprises first surface and the second surface of opposition mutually, described surface relief structure layer can be modulated to incident light and from the direction of the light of described color functional layer, wherein, described base material, surface relief structure layer and color functional layer be arranged as one of following situation:
The first surface of described base material is coated with at least in part described surface relief structure layer, the second surface of described base material is coated with at least in part described color functional layer; Or
The first surface of described base material is coated with at least in part described color functional layer, the surface of described color functional layer is coated with described surface relief structure layer at least in part; Or
The first surface of described base material and second surface are coated with described color functional layer all at least in part, the surface being positioned at the color functional layer on described first surface is coated with described surface relief structure layer at least in part.
The present invention also provides a kind of anti-fake product adopting above-mentioned optical anti-counterfeit element.
Because optical anti-counterfeit element according to the present invention and anti-fake product are modulated to incident light and from the direction of the light of color functional layer by surface relief structure layer, so pass through the combination of surface relief structure layer and color functional layer, innervation, the depth of field, three-dimensional, pattern transfer effect and the assemblage characteristic thereof that can obtain abundant optical security features and change with color, thus improve expressive force and the anti-counterfeit capability of color characteristic, and the feasibility of required technique is high, be difficult to copy.
Accompanying drawing explanation
Fig. 1 is the sectional view of the optical anti-counterfeit element according to one embodiment of the present invention;
Fig. 2 is the sectional view of the optical anti-counterfeit element according to another embodiment of the present invention;
Fig. 3 is the sectional view of the optical anti-counterfeit element according to the another embodiment of the present invention;
Fig. 4 (a), 4 (b), 4 (c) respectively illustrate the partial cross section figure from the arrange icons above surface relief structure layer during top view surface relief structure layer, perspective view and intercepting;
Fig. 5 (a), 5 (b), 5 (c) are respectively the partial cross section figure in order to obtain top view figure when pattern translation rolling effect adopts spherical microlens to form surface relief structure layer, perspective view and intercepting;
Fig. 6 (a), 6 (b), 6 (c) are respectively the partial cross section figure in order to obtain top view figure when pattern translation rolling effect adopts sawtooth pattern prism to form surface relief structure layer, perspective view and intercepting;
Fig. 7 gives and utilizes cylindrical lens to form surface relief structure layer and form the method for 2D/3D effect;
When Fig. 8 shows and chooses spherical microlens formation surface relief structure layer, the distance between color functional layer and surface relief structure layer changes the impact brought;
Fig. 9 (a), 9 (b), 9 (c) are respectively the partial cross section figure in order to obtain top view figure when to adopt cylindrical microlenses to form surface relief structure layer with color and the having the image effect of plastic relief sense of light and shade change, perspective view and intercepting; And
Figure 10 in order to obtain diffuse reflective characteristics adopt cylindrical microlenses form surface relief structure layer time top view figure.
Embodiment
Describe in detail according to optical anti-counterfeit element of the present invention and the product using this optical anti-counterfeit element below in conjunction with accompanying drawing, to understand thought of the present invention better.Should be appreciated that described accompanying drawing and describe just description of the preferred embodiment of the present invention in detail, not limit the scope of the invention by any way.
Optical anti-counterfeit element 1 according to one embodiment of the present invention comprises base material 2, surface relief structure layer 3 and color functional layer 4, described base material 2 comprises first surface 21 and the second surface 22 of opposition mutually, described surface relief structure layer 3 can be modulated to incident light and from the direction of the light of described color functional layer 4, wherein, described base material 2, surface relief structure layer 3 and color functional layer 4 be arranged as one of following situation: the first surface 21 of described base material 2 is coated with described surface relief structure layer 3 at least in part, the second surface 22 of described base material 2 is coated with at least in part described color functional layer 4(as shown in Figure 1), or the first surface 21 of described base material 2 is coated with described color functional layer 4 at least in part, the surface of described color functional layer 4 is coated with at least in part described surface relief structure layer 3(as shown in Figure 2), or the first surface 21 of described base material 2 and second surface 22 are coated with described color functional layer 4 all at least in part, the surface being positioned at the color functional layer 4 on described first surface 21 is coated with described surface relief structure layer 3(as shown in Figure 3 at least in part).
Surface relief structure layer 3 can comprise one or more continuous curve surface type structure, one or more sawtooth pattern prism or their splicing or combination.Wherein, described continuous curve surface type structure can be splicing or the combination of one or more structures in microlens structure, sinusoidal pattern structure, oval structure, hyperbolic surface structure, parabolic shape structure etc.Described microlens structure can be refractive lenticule, diffraction type lenticule or their splicing or combination, wherein refractive lenticule can comprise the lenticule based on geometrical optics of spherical microlens, ellipsoid lenticule, cylindrical microlenses or other random geometry, and diffraction type lenticule comprises humorous diffraction microlens, planar diffraction lenticule, fresnel's zone plate etc.In addition, the concrete arrangement mode of above structure can be periodic, local period, aperiodicity, randomness or their combination etc.By carrying out suitable design modifying to concrete arrangement mode, and combining with color functional layer 4, just can obtain the optical signature such as innervation, pattern change, 3 D stereo with color change.This incites somebody to action below 4-10 by reference to the accompanying drawings and is described in detail.
Surface relief structure layer 3 can be transparent or semitransparent, and and external environment condition between there is refringence, thus incident and emergent ray to be reflected.
The size of surface relief structure layer 3 at least one direction of first surface 21 being parallel to base material 2 can be 2 μm-200 μm, is preferably 5 μm-100 μm; When this size is less than 2 μm, obvious diffraction phenomena can be there is, present iris, color characteristic and the observing effect of color functional layer 4 can be disturbed.The relief height of surface relief structure layer 3 can be less than 25 μm, is preferably less than 15 μm.
Can be obtained by the micro-nano technology such as optical exposure, electron beam exposure mode according to the surface relief structure layer 3 in optical anti-counterfeit element 1 of the present invention, can also realize in conjunction with techniques such as hot melt backflows, carry out batch duplicating by processing modes such as ultraviolet casting, mold pressing, nano impressions.
Can be absorption-type structure according to the color functional layer 4 in optical anti-counterfeit element 1 of the present invention, wherein, described absorption-type structure can be the combination of one or more in ink, pigment, dyestuff.
Color functional layer 4 can also be liquid crystal light change layer.Typically, such as, cholesteric liquid crystal material can be adopted to realize color functional layer 4, thus can realize such as with viewing angle change produce greenly become blue, red stain is green etc. color characteristic.Liquid crystal light change layer can be produced in batches by modes such as coating, printings.
Color functional layer 4 can also be zero order light change layer.Described zero order light change layer can comprise the sub-wavelength grate structure on the surface covering base material 2, and at least one in the cycle of described sub-wavelength grate structure, grooved and groove depth is variable, wherein, the cycle of described sub-wavelength grate structure can be 50nm to 500nm, be preferably 200nm to 400nm, the grooved of described sub-wavelength grate structure can be such as at least one grooved in sinusoidal, rectangle, serrate etc., the groove depth of described sub-wavelength grate structure can be positioned at the scope of 10nm to 500nm, is preferably 50nm-200nm.Described sub-wavelength grate structure can be obtained by the micro-nano technology such as optical exposure, electron beam exposure mode, can also realize in conjunction with techniques such as hot melt backflows, carries out batch duplicating by micro-nano technology modes such as ultraviolet cast, mold pressing, nano impressions.
Described zero order light change layer can also comprise the single or multiple lift coating structure covered on described sub-wavelength grate structure.Single plating layer structure can be formed by high-index material.Multilayer coating structure then can be interfere type rhythmo structure, this interfere type rhythmo structure forms Fabry-pool sieve resonator cavity, such as interfere type rhythmo structure can be traditional light and becomes membrane structure, i.e. " reflection horizon/low refractive index dielectric layer/absorption layer " three layers of coating structure, wherein, when on the first surface 21 that zero order light change layer is positioned at base material 2, reflection horizon in three layers of coating structure contacts with described sub-wavelength grate structure, and when on the second surface 22 that zero order light change layer is positioned at base material 2, the absorption layer in three layers of coating structure contacts with described sub-wavelength grate structure; Or can be color coating, i.e. " reflection horizon/high refractive index medium layer/absorption layer " three-decker, wherein when on the first surface 21 that zero order light change layer is positioned at base material 2, reflection horizon in this color coating contacts with described sub-wavelength grate structure, and when on the second surface 22 that zero order light change layer is positioned at base material 2, the absorption layer in this color coating contacts with described sub-wavelength grate structure; Or there is the medium laminated Rotating fields of different refractivity, such as " high refractive index medium layer/low refractive index dielectric layer/high refractive index medium layer " three layers of coating structure.Wherein, the material in above-mentioned reflection horizon can for having the material of high reflectance, as gold, silver, copper, aluminium etc.; The material requirements of absorption layer is the close material of its refractive index and absorptivity, and can be such as semi-metallic (as silicon, germanium etc.), also can be metal material or its alloy (as chromium, copper, nickel, nickel-chrome etc.); The refractive index of high refractive index medium layer higher than 1.7, such as, can be zinc sulphide, titania etc.; The refractive index of low refractive index dielectric layer is less than or equal to 1.7, such as, can be magnesium fluoride, silicon dioxide, cryolite etc.
Color functional layer 4 can also become film for co-extrusion light.And directly co-extrusion light can be become film as base material 2.
Color functional layer 4 can also be interfere type multilayer coating structure, in this interfere type multilayer coating structure forming method cloth-pool sieve resonator cavity, it has selection index system to the white light of incidence, makes emergent ray only comprise some wave band, thus forms specific color; When incident angle changes, light path on the other side changes, and interferes wave band also to change, thus causes the color of presenting to observer also to change thereupon, thus forms light change effect.Wherein, the structure of described interfere type multilayer coating structure can adopt any one structure described by the above-mentioned multilayer coating structure in conjunction with zero order light change layer, so repeat no more here.
In addition, when the surface (such as, first surface 21 and/or second surface 22) of base material 2 is coated with to upper part color functional layer 4, just pierced pattern can be formed, wherein said pierced pattern can be macroscopic pattern, micro-word, meticulous lines etc., thus can realize better antifalse effect.When being partly coated with described surface relief structure layer 3 on first surface 21 or on the surface of color functional layer 4, also formation contrast between described surface relief structure layer 3 and the region not having described surface relief structure layer 3 can be had, thus formation pattern structure, strengthen antifalse effect.In addition, when first surface 21 upper part be coated with color functional layer 4 time, surface relief structure layer 3 not only can partly cover on the surface of color functional layer 4, but also can cover and do not have thereon on the first surface 21 of color functional layer 4.
Certainly; in order to increase the serviceable life according to optical anti-counterfeit element of the present invention; described optical anti-counterfeit element 1 can also comprise protective seam (not shown); wherein said protective seam can cover on the surface of the surface relief structure layer 3 shown in Fig. 1 and color functional layer 4; also can cover on the surface of the surface relief structure layer 3 shown in Fig. 2, the surface relief structure layer 3 shown in Fig. 3 can also be covered and be positioned on the surface of the color functional layer 4 on the second surface 22 of base material 2.
When described protective seam directly contacts with described surface relief structure layer 3 and covers described surface relief structure layer 3 completely, the difference of the refractive index of described protective seam and described surface relief structure layer 3 is not less than 0.1, is preferably not less than 0.3.But when protective seam not completely covering surfaces embossment structure layer 3 time, refractive index difference therebetween can be unrestricted.In addition, described protective seam can also have attachment function, can be bonded on various article by optical anti-counterfeit element according to the present invention, such as, is bonded on banknote, the contour safety product of credit card and high value added product.
Can be the colourless of at least local transparent or coloured media layer according to the base material 2 in optical anti-counterfeit element of the present invention, and base material 2 can be the transparent dielectric film that one deck is single, such as PET film, PVC film etc., can certainly be the transparent dielectric film that surface band has functional coating (such as embossed layer), the multilayer film be composited can also be through.
Preferably, the surface of the first surface 21 of described base material 2, second surface 22 and/or described surface relief structure layer 3 can also have diffraction light change feature, interference light becomes feature, micro-nano structure feature, print characteristics, partially metallised feature and for one or more features in machine-readable magnetic, optical, electrical, radiation characteristics.
In addition, formed in the material of surface relief structure layer 3 and can add fluorescent material, thus make optical anti-counterfeit element 1 according to the present invention with fluorescent characteristics.Preferably, fluorescent material also can be added in the base material 2 of optical anti-counterfeit element 1, first surface 21 place of base material 2, second surface 22 place of base material 2 and/or the surface of surface relief structure layer 3.Preferably, fluorescent material such as can form phosphor pattern by mode of printing.
As follows according to the ultimate principle of optical anti-counterfeit element 1 of the present invention: the differential primitive choosing the described surface relief structure layer 3 according to optical anti-counterfeit element 1 of the present invention.For arbitrary incident field, owing to there is refringence in the interface of differential primitive, so when this incident field is by reflecting (α) during surface relief structure layer 3, thus producing refraction light field, this refraction light field is by obtaining at the Line Integral of described surface relief structure layer 3 refract light (α) through above-mentioned differential primitive; When above-mentioned refraction light field is incident to color functional layer 4, because color functional layer 4 has the effect such as selective absorbing, reflection, so by color functional layer 4 selective reflecting (β), when this reflected light (β) to form the emergent light of certain luminance, color by again reflecting (γ) during a certain differential primitive, thus producing outgoing light field, this outgoing light field is by obtaining at the Line Integral of described surface relief structure layer 3 refract light (γ) through above-mentioned differential primitive.
Although above-mentioned described physical principle is correct understanding and the description of the physical phenomenon produced for optical anti-counterfeit element involved in the present invention thought at present, do not mean described optical anti-counterfeit element limit by the current described physical principle for explaining this phenomenon.The anti-counterfeiting characteristic of described optical anti-counterfeit element 1 is determined by the basic structure of this optical anti-counterfeit element 1 and embodiment.
Below in conjunction with Fig. 4-10, the antifalse effect of optical anti-counterfeit element according to the present invention is described.
Fig. 4 (a), 4 (b), 4 (c) respectively illustrate the arrangement of the top top view surface relief structure layer 3 from surface relief structure layer 3 diagram, according to the perspective view of optical anti-counterfeit element of the present invention and the partial cross section figure of intercepting, wherein zones of different defines the cylindrical microlenses structure of different directions arrangement, and described cylindrical microlenses width is 30 microns, the cycle is 32 microns, be highly 8 microns.Color functional layer 4 on the second surface 22 of base material 2 is structure C r/SiO
2the color changeable coating of/Al, its each layer thickness is respectively 5nm/430nm/60nm, and wherein Cr layer directly contacts with described second surface 22, and the color characteristic of this color changeable coating is realize carmetta to green transformation with the change of viewing angle.Described base material 2 is PET film, and thickness is 19 microns.The effect that this example structure realizes is: top view above surface relief structure layer 3, and with the change of viewing angle, whole region can produce the effect of the pattern translation rolling changed with color and light and shade.
Fig. 5 and Fig. 6 sets forth and realize adoptable other two kinds of surface relief structure layer 3 structures of rolling effect and exemplarily give arrangement mode.
Fig. 5 (a), 5 (b), 5 (c) are respectively and adopt spherical microlens to form the partial cross section figure of the top view figure of surface relief structure layer 3, perspective view and intercepting to obtain pattern translation rolling effect.
Fig. 6 (a), 6 (b), 6 (c) are respectively and adopt sawtooth pattern prism to form the partial cross section figure of the top view figure of surface relief structure layer 3, perspective view and intercepting to obtain pattern translation rolling effect.
Fig. 7 schematically illustrates and utilizes the thorough surface relief structure layer 3 of cylindrical lens and the method forming 2D/3D effect.Four image-regions that shape is " KINE " are as shown in Fig. 7 (a), (b), (c), (d), their differences in the position of transverse direction are d, be filled with the different cylindrical microlenses structure in position angle (lenticule parameter is with Fig. 4 center pillar lens parameter) respectively, described azimuthal change is gradual change.After the region mode of carrying out as Fig. 7 (e), (f), (g), (h) in Fig. 7 (a), (b), (c), (d) is split, synthesize according to the mode of Fig. 7 (i), thus determine the final form of surface relief structure layer 3.The surface relief structure layer 3 formed according to the method by change at top view in the process of visual angle obtain with color and light and shade change and there is the 2D/3D feature of depth of field sense and certain dynamic effect.
Image format by change Fig. 7 (a), (b), (c), (d) obtains different effects, such as, they are defined as respectively " K ", " I ", " N ", " E " four image-regions, so will observer's top view are made to change in the process of visual angle the switching effect obtained between multiple image.Again such as, they are defined as respectively the different images under the different angles of true stereo object or model, then can by it being mated with azimuthal relation of cylindrical microlenses, thus observer be made to obtain real stereoscopic sensation in the process of top view change visual angle.
Fig. 8 shows when surface relief structure layer 3 is made up of spherical microlens, and the matching relationship between the distance L between color functional layer 4 and surface relief structure layer 3 and focal length of lens F is to the sectional view of the modulation case of the light of color functional layer 4 outgoing.When the structure at least partially of surface relief structure layer 3 is continuous curve surface type structure, then need the impact considering that the distance between color functional layer 4 and surface relief structure layer 3 produces as variable, by regulating this distance to obtain more optical effect.
Fig. 9 (a), 9 (b), 9 (c) are respectively the partial cross section figure of top view figure when adopting cylindrical microlenses to form surface relief structure layer 3, perspective view and intercepting.Black region wherein in Fig. 9 (a), 9 (b) schematically represents post lens, and pattern and the arrangement mode of selected post lens are schematically provided by Fig. 9 (c).The effect that this example structure realizes is: above surface relief structure layer 3 during top view, with the change of viewing angle, and whole region can produce the image effect having plastic relief sense with color and light and shade change.
Figure 10 is the top view figure adopting cylindrical microlenses to form surface relief structure layer 3.The relative randomization in post lens arrangement direction in figure in zones of different.The effect that this example structure realizes is: above surface relief structure layer 3 during top view, with the change of viewing angle, and whole region can produce the diffuse reflective characteristics with granular sensation, flickering with color and light and shade change.Preferably, when described surface relief structure layer 3 is made up of the randomized post lens of orientation to form diffuse effect, can by changing the degree of stochastic distribution and concrete form to form more feature.
Optical anti-counterfeit element according to the present invention is particularly suitable for being made into opened window safety line.The thickness of described safety line is not more than 50 μm.Cheque paper with described opened window safety line is used for the false proof of all kinds of high safety products such as banknote, passport, securities.
Also can be used as label, mark, wide bar, transparent window, overlay film etc. according to optical anti-counterfeit element of the present invention, can be sticked on various article by various bonding mechanism.Such as transfer on banknote, the contour safety product of credit card and high value added product.
The present invention provides the product with described optical anti-counterfeit element on the other hand, and described product includes but not limited to all kinds of high safety product and the high value added products such as banknote, credit card, passport, securities, and each wrapping paper, packing box etc.
Below some preferred embodiment of the present invention is only exemplarily described.But it will be understood by those skilled in the art that under the prerequisite not departing from design of the present invention and spirit, various equivalents or amendment can be made to the present invention, and the technical scheme so obtained also should belong to protection scope of the present invention.
Claims (23)
1. an optical anti-counterfeit element, this optical anti-counterfeit element comprises base material, surface relief structure layer and color functional layer, described base material comprises first surface and the second surface of opposition mutually, described surface relief structure layer can be modulated to incident light and from the direction of the light of described color functional layer, wherein, described base material, surface relief structure layer and color functional layer be arranged as one of following situation:
The first surface of described base material is coated with at least in part described surface relief structure layer, the second surface of described base material is coated with at least in part described color functional layer; Or
The first surface of described base material is coated with at least in part described color functional layer, the surface of described color functional layer is coated with described surface relief structure layer at least in part; Or
The first surface of described base material and second surface are coated with described color functional layer all at least in part, the surface being positioned at the color functional layer on described first surface is coated with described surface relief structure layer at least in part; And
Wherein, described color functional layer is following one at least: absorption-type structure, liquid crystal light change layer, zero order light change layer, co-extrusion light become film, interfere type multilayer coating structure; And
Described surface relief structure layer is of a size of 2 μm-200 μm at least one direction being parallel to described first surface.
2. optical anti-counterfeit element according to claim 1, wherein, described surface relief structure layer is of a size of 5 μm-100 μm at least one direction being parallel to described first surface.
3. optical anti-counterfeit element according to claim 1, wherein, the relief height of described surface relief structure layer is less than 25 μm.
4. optical anti-counterfeit element according to claim 1, wherein, the relief height of described surface relief structure layer is less than 15 μm.
5. optical anti-counterfeit element according to claim 1, wherein, described surface relief structure layer is continuous curve surface type structure, sawtooth pattern prism structure and/or their splicing or combination.
6. optical anti-counterfeit element according to claim 5, wherein, described continuous curve surface type structure is splicing or the combination of one or more structures in microlens structure, sinusoidal pattern structure, oval structure, hyperbolic surface structure, parabolic shape structure.
7. optical anti-counterfeit element according to claim 6, wherein, described microlens structure is refractive lenticule, diffraction type lenticule or their splicing or combination.
8. optical anti-counterfeit element according to claim 1, wherein, described color functional layer is absorption-type structure.
9. optical anti-counterfeit element according to claim 8, wherein, described absorption-type structure is the combination of one or more in ink, pigment, dyestuff.
10. optical anti-counterfeit element according to claim 1, wherein, described color functional layer is liquid crystal light change layer.
11. optical anti-counterfeit elements according to claim 1, wherein, described color functional layer is zero order light change layer.
12. optical anti-counterfeit elements according to claim 11, wherein, described zero order light change layer comprises sub-wavelength grate structure and covers the single or multiple lift coating structure on described sub-wavelength grate structure.
13. optical anti-counterfeit elements according to claim 12, wherein, the cycle of described sub-wavelength grate structure is 50nm to 500nm.
14. optical anti-counterfeit elements according to claim 12, wherein, the cycle of described sub-wavelength grate structure is 200nm to 400nm.
15. optical anti-counterfeit elements according to claim 1, wherein, described color functional layer is that co-extrusion light becomes film.
16. optical anti-counterfeit elements according to claim 1, wherein, described color functional layer is interfere type multilayer coating structure, in this interfere type multilayer coating structure forming method cloth-pool sieve resonator cavity.
17. optical anti-counterfeit elements according to claim 1, wherein, described optical anti-counterfeit element also comprises the protective seam covering described surface relief structure layer and/or be positioned at the color functional layer on described second surface.
18. optical anti-counterfeit elements according to claim 17; wherein; when described protective seam directly contacts with described surface relief structure layer and covers described surface relief structure layer completely, the difference of the refractive index of described protective seam and described surface relief structure layer is not less than 0.1.
19. optical anti-counterfeit elements according to claim 17; wherein; when described protective seam directly contacts with described surface relief structure layer and covers described surface relief structure layer completely, the difference of the refractive index of described protective seam and described surface relief structure layer is not less than 0.3.
20. optical anti-counterfeit elements according to claim 17, wherein, described protective seam has attachment function.
21. optical anti-counterfeit elements according to claim 1, wherein, the surface of the first surface of described base material, second surface and/or described surface relief structure layer has diffraction light change feature, interference light becomes feature, micro-nano structure feature, print characteristics, partially metallised feature and for one or more features in machine-readable magnetic, optical, electrical, radiation characteristics.
22. optical anti-counterfeit elements according to claim 1, wherein, the first surface of described base material, second surface, described surface relief structure layer surface and/or described surface relief structure layer itself are with phosphor pattern feature.
The anti-fake product of the optical anti-counterfeit element of 23. 1 kinds of employings any one of claim 1-22 described in claim.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210302871.XA CN103576216B (en) | 2012-08-02 | 2012-08-23 | A kind of optical anti-counterfeit element and adopt the anti-fake product of this optical anti-counterfeit element |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210273657 | 2012-08-02 | ||
| CN201210273657.6 | 2012-08-02 | ||
| CN2012102736576 | 2012-08-02 | ||
| CN201210302871.XA CN103576216B (en) | 2012-08-02 | 2012-08-23 | A kind of optical anti-counterfeit element and adopt the anti-fake product of this optical anti-counterfeit element |
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| Publication Number | Publication Date |
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| CN103576216A CN103576216A (en) | 2014-02-12 |
| CN103576216B true CN103576216B (en) | 2016-03-23 |
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Country Status (2)
| Country | Link |
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| CN (1) | CN103576216B (en) |
| WO (1) | WO2014019269A1 (en) |
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| 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 |
| CN104575255B (en) * | 2015-01-19 | 2017-08-22 | 深圳市深大极光科技有限公司 | Anti false film |
| MA42899A (en) * | 2015-07-10 | 2018-05-16 | De La Rue Int Ltd | PROCESSES FOR MANUFACTURING SAFETY DOCUMENTS AND SAFETY DEVICES |
| CN105882182B (en) * | 2016-04-08 | 2019-04-09 | 中荣印刷集团有限公司 | A method of it is printed using dot grating stereo and realizes sectional perspective effect |
| 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 |
| CN107945651A (en) * | 2017-12-12 | 2018-04-20 | 四川云盾光电科技有限公司 | A kind of micronano optical 3D dynamic anti-fakes film and manufacture craft |
| CN108682285A (en) * | 2018-06-22 | 2018-10-19 | 孙涵 | Label and preparation method thereof with light beam color changeable effect |
| 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 |
| CN111716936B (en) * | 2019-03-19 | 2021-08-06 | 中钞特种防伪科技有限公司 | Optical anti-counterfeiting element and optical anti-counterfeiting product |
| CN111716935A (en) * | 2019-03-19 | 2020-09-29 | 中钞特种防伪科技有限公司 | Optical anti-counterfeiting components and optical anti-counterfeiting products |
| CN111716939B (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 |
| CN110415602A (en) * | 2019-06-13 | 2019-11-05 | 武汉华工图像技术开发有限公司 | A kind of double-colored dynamic anti-fake film and preparation method thereof |
| CN111070938B (en) * | 2019-12-20 | 2023-08-01 | 公安部交通管理科学研究所 | Card with holographic anti-counterfeiting mark and manufacturing method thereof |
| CN114428391B (en) * | 2020-10-29 | 2023-06-02 | 中钞特种防伪科技有限公司 | Optical anti-counterfeiting element and anti-counterfeiting product comprising same |
| CN114604019B (en) * | 2020-12-04 | 2023-09-05 | 中钞特种防伪科技有限公司 | Safety line or strip and preparation method thereof |
| CN114815006B (en) * | 2021-01-19 | 2024-11-19 | 惠州市华阳光学技术有限公司 | A dynamically amplified photochromic film |
| CN114891367A (en) * | 2021-01-26 | 2022-08-12 | 中钞特种防伪科技有限公司 | Flaky optical pigment, preparation method thereof and anti-counterfeiting element |
| CN114919311A (en) * | 2021-02-03 | 2022-08-19 | 中钞特种防伪科技有限公司 | Anti-fake element |
| CN115230364B (en) * | 2021-04-25 | 2024-03-29 | 中钞特种防伪科技有限公司 | Optical security element, method for designing an optical security element, security product and data carrier |
| CN113189688A (en) * | 2021-04-27 | 2021-07-30 | 维沃移动通信有限公司 | Cover plate and electronic equipment |
| CN116118382B (en) * | 2021-11-15 | 2024-10-11 | 中钞特种防伪科技有限公司 | Security element and security product |
| CN114023183A (en) * | 2021-12-08 | 2022-02-08 | 高立峰 | An anti-counterfeiting label |
| CN114708789B (en) * | 2022-04-17 | 2024-02-09 | 西北工业大学 | A method for controlling the morphology of amorphous silicone polymers with variable flower shapes and a method for preparing non-clonable anti-counterfeiting marks |
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| WO2014019269A1 (en) | 2014-02-06 |
| CN103576216A (en) | 2014-02-12 |
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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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