CN1655953A - Security element for use as photocopy protection - Google Patents
Security element for use as photocopy protection Download PDFInfo
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- CN1655953A CN1655953A CN 03812197 CN03812197A CN1655953A CN 1655953 A CN1655953 A CN 1655953A CN 03812197 CN03812197 CN 03812197 CN 03812197 A CN03812197 A CN 03812197A CN 1655953 A CN1655953 A CN 1655953A
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- local surfaces
- safe unit
- layer
- colour killing
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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
Abstract
The invention relates to a security element (2) which is cut out from a plastic composite structure (1) and is suitable to be glued onto a substrate (9). A reflection layer (10) is embedded between a molding layer (4) and a protective layer (7) of the composite structure (1), into which reflection layer optically effective structures (5; 6) are molded. The security element (2) comprises at least one security feature whose surface has a macrostructure in the reflection layer (10) and/or is subdivided into at least one first and one second subarea (32; 33). The first subarea (32) has a first structure (5). An achromatic second structure (6) is molded into the second subarea (33). The optically effective structures (5; 6) deviate the incident light (11) by the direction of reflection within a predetermined angular range ( epsilon ) and comprise a visually perceptible but not photocopiable information since the copiers are blind in the angular range ( epsilon ).
Description
As claim 1 classified part proposes, the present invention relates to a kind of safe unit that in layered combination, has the configuration of optics resulting structure.
This safe unit comprises a kind of picture on surface that contains the surface element of amalgamation as the photocopying protection, and its light correcting principle is formed in the plastics layered combination.Safe unit is used for verifying the authenticity of original paper, especially is fit to protection security and bill, bank note, payment device, ID card and various file, particularly prevents from it is done undelegated photocopying.The effect of security feature is the object that is provided to addressee indication with visual type, and to indicate this object be real but not duplicate in the mode of easy check.After circulating, can prevent with the sort of method unauthorized duplicate object, or at least extremely difficulty is duplicated.But point out that simulation black and white copying machine and the present technical merit of digital color copier make them can make in fact the copy of the file that can't distinguish with not protected element a little while.
This class secure element application the picture on surface of holographic and/or diffraction structure, can obtain understanding from heap file, representative example has EP0105099A1, EP0330738A1 and EP0375833A1.Picture on surface is distinguished with the activity effect in pattern brilliance and the pattern.Diffraction structure is embedded in the thin plastics of one deck, and the form with the marking or mark is attached to such as on the files such as bank note, bill or security, individual passport, the pass, visa, identity card mostly.The color photocopying part of this class safe unit shows multicolour pattern and does not have the activity effect, thereby if the addressee does not notice or illumination difference that then the color photocopying part can be obscured mutually with the safe unit original paper.
Know that from EP0522217 another kind prevents the security feature of uncommitted xcopy.The transfer belt that metallic luster is arranged is attached on the file, and this transfer belt is reproduced as black on duplicate, so form tangible contrast with reflection characteristic on the original paper, the concise messages that this public understands easily is enough to distinguish duplicate and original paper.Regrettably, duplicate can should protect in emulation, thereby can regard duplicate as original paper at illumination difference or in acting hurriedly in a messy situation.
EP0201323B1 has listed the various materials that can produce the layered combination of band safe unit.
The purpose of this invention is to provide a kind of cheap safe unit that is difficult to emulation and comprises the image that a kind of photocopier can't duplicate.
This purpose is realized by a kind of safe unit that is attached to the layered combination on the substrate that comprises; it has the layer of shaping; plastic protective layer and be embedded in the reflecting layer that is shaped between layer and the protective layer; wherein the optics resulting structure of security feature is formed in the layer that is shaped; this security feature has at least one at the minute surface macrostructure of subregion bending and/or be divided into the surface of first and second local surfaces at least; first local surfaces is taken by first structure; and second structure of colour killing is shaped in second local surfaces; the optics resulting structure of security feature is adapted at around the incident lights of 14 predetermined degree angular region (ε) intrinsic deflection parallel relation of minute surface reflection direction, and this security feature comprises that also one can be visual but item of information that can not photocopying.
The present invention has numerous advantages.
Basically in the curved mirror macrostructure of this angular region intrinsic deflection light or two or more basically in the local surfaces of this angular region intrinsic deflection light, make its optics item of information of in surperficial sub-assembly, encoding, and the latter can not photocopying, naked eyes but can be seen.
In this respect, colour killing structure be a kind of basically with the structure of Wavelength-independent ground deflection incident light.
The reflection of colour killing structure, diffraction or scatter incident light basically with Wavelength-independent, thereby in effective observation distance, extremely slight and negligible color effect do not occur or only occur to the beholder.Therefore, the colour killing structure example is macrostructure or bright optical grating construction in this way, and the cycle is 6 μ m or longer, and the profile degree of depth is preferably in 0.25 μ m zone.In addition, the cycle is that the structure of 3～6 μ m presents the colour killing performance variation relevant with the burr degree of depth.
The advantage of using the colour killing structure is, determines that angular region do not consider light fan-out effect, because optical texture is around minute surface reflection direction deflection incident light, thereby can guarantee that the light component beyond the predetermined angle scope is not deflected, and is visible during photocopying.
Claims have proposed all favourable configurations of the present invention.
The all embodiment of the present invention are shown in accompanying drawing, utilize accompanying drawing to make a detailed description below, wherein:
Fig. 1 illustrates the cross section of running through safe unit,
Fig. 2 illustrates the sectional view of copying equipment,
Fig. 3 illustrates the response function figure of copying equipment,
Fig. 4 illustrates a security feature,
Fig. 5 illustrates a macrostructure,
Fig. 6 illustrate band original paper safe unit file and
Fig. 7 illustrates the duplicate of file.
Fig. 1 illustrates the structure of the layered combination 1 that safe unit 2 is cut open.In layered combination 1; label 3 refers to outer cap rock; the 4th, optics resulting structure 5,6 is formed in the shaping layer of the inside; 7 is protective layer; the 8th, adhered layer; be used for safe unit 2 is joined to file 9 as substrate, for example Miscellaneous Documents of bill or security, bank note, payment device, identity card or broad sense.
The groove of protective layer 7 filling optics resulting structures 5,6, thereby the interface that is shaped between layer 4 and the protective layer 7 is the burr shape of optics resulting structure 5,6.For strengthening the boundary layer reflection, this boundary layer is the form in reflecting layer 10.Reflecting layer 10 comprises the high bright metal of skim, and as Al, Au, Cr, Te etc., layer thickness is 30～100 μ m.In the table 1 of above-mentioned EP0201323B1, listed the inorganic medium of high index of refraction, be suitable as reflecting layer 10.Can produce the additional color effect that attracts people's attention to interfere with layer as reflecting layer 10, its a plurality of layered portion are made up of other metal level and dielectric layer.For example can be a kind of metal medium bilayer, the contiguous layer 4 that is shaped of its medium, metal level also can be a kind of three layers in abutting connection with protective layer 7, wherein transparent dielectric layer is the TiO of 100～150nm for example
2Be enclosed in transparent the metal level for example Al of 5nm and reflective metal layer for example between the Al greater than 50nm, wherein the contiguous protective layer 7 of the opaque metal layer of reflection.
Layered combination 1 (not shown) on year paper tinsel of lengthy motion picture combines, and wherein earlier cap rock 3 is added to and carries on the paper tinsel, and order in accordance with regulations adds formation layer 4, reflecting layer 10, protective layer 7 and adhesion coating 8 then.If protective layer 7 is binders, just without adhesion coating 8.The burr of optics resulting structure 5,6 can form before or after adding reflecting layer 10.At last, safe unit 2 is cut into layered combination 1 and is attached on the substrate 9, remove and unload paper tinsel.Because the cap rock 3 and the layer 4 that is shaped are transparent at least, so the beholder can see the optical effect of optics resulting structure 5,6 by the cap rock 3 and the layer 4 that is shaped.
Zigzag colour killing optical grating construction 6 by shown in direction 39 distinguish, grating vector relates to the local tilt angle gamma on the relative layered combination of this optical grating construction 1 surface in the stable region, γ is at most ± 7 °, is preferably ± 5 °.Fig. 1 illustrates the asymmetric optical grating construction as second structure 6 for example, and direction as shown 39 is towards the right side.
Matt structure is scattering into a scattering cone to incident light 11, and angle of flare is predetermined by the scattering properties of this tarnish structure, and the direction of reverberation 22 is as cone axis.Scattered light intensity is for example maximum on cone axis, along with the distance with cone axis increases and reduces, but wherein along still observed person's perception of light of scattering cone matrix direction deflection.Here be called as in the matt structure of " isotropism ", the cross section of cone and its axis normal is the rotation symmetry.Contrast with " isotropism " matt structure, be called as the composed component of the matt structure of " anisotropy " here, in safe unit 2 planes, a preferred orientations is arranged.In " anisotropy " matt structure, this cross section is reversed, and promptly is out of shape along preferred orientations ovally, and ellipse short shaft is parallel with preferred orientations.In " anisotropy " matt structure, the direction as shown 39 of this preferred orientations and same " anisotropy " matt structure connection all comprises 90 azimuths of spending.
" isotropism " of weak scattering and " anisotropy " matt structure or kinoform, at a narrow scattering cone intrinsic deflection incident light 11, angle of flare ε is 14 ° to the maximum, is preferably 10 °, and it is included between the direction of the matrix 14,15 of scattering cone and folded light beam 13.For technical reason, the profile height of the optics resulting structure 5,6 that the layering combination layer is 1 li is limited to lifting changing value H less than 10 μ m, and preferable H value is 0.05～2 μ m.In order to overcome technical barrier, especially under the situation of macrostructure, the H value is not a fixed value in security feature 30, because the scope that helped partly according to the rules by the H value of optics resulting structure 5,6 or macrostructure domination has different values.
Fig. 2 illustrates with vertical section and makes modern digital duplicator 16 and all function element thereof that colour or black and white are duplicated.Transparency glass plate 17 is used as the supporting member of file 9, and makes predetermined format, as A4, A3 etc.File 9 is placed on the glass plate 17, pastes safe unit 2 (Fig. 1) and turns to this glass, and file 9 passes through glass plate 17 exposures in fillet, and this fillet extends laterally accross glass plate 17 and file 9 respectively, and in copy operation, fillet moves along glass plate 17.Lighting device 18 comprises roller, linear light sorurce 19 and focus lamp 20,21, can move (not pointing out) in the direction of arrows along glass plate 17 on the track 34 of roller below glass plate 17.The lighting device 18 of being furnished with roller, light source 19 and focus lamp 20,21 extends perpendicular to the figure paper plane along width of glass sheet in Fig. 2, and focus lamp 20,21 concentrates in the fillet by glass plate 17 white light that relative normal 12 (Fig. 1) sends light source 19 substantially symmetrically on file 9.According to the brand of duplicator 16, inciding the incidence angle that the light of file 9 relates to is 40～50 ° and-40～-50 °.Utilize three flat deflecting mirrors 23～25 to enter detector 26 at safe unit 2 and file 9 along the backscattered light 22 of the direction of normal 12.Deflecting mirror 23～25 that tilts and detector 26 are parallel to light source 19 on the whole length of fillet and focus lamp 20,21 extends.In its longitudinal extent, detector 26 has the photoelectric detector 27 of a plurality of reception back-scattered lights 22 point-blank, and the quantity of unit length photoelectric detector 27 has determined the resolution capability of duplicator 16.Detector 26 is analyzed back-scattered light 22, produces fillet irradiated electric diagram picture on file 9.The analoging reproduction machine has similar guiding device to emission light and the back-scattered light 22 that is used to throw light on.
The curve of Fig. 3 has been drawn the response characteristic AF of duplicator 16 (Fig. 2), it and back-scattered light 22 (Fig. 2) and relevant with respect to the reflection of light angle θ of folded light beam 13 (Fig. 1) diffraction or scattering with arbitrary unit.Being directly adjacent to the minute surface reflection direction is the regional A of folded light beam 13 directions, and the structural design that extends to θ=15 ° 15 ° of duplicators 16 of angular range ε ≈ from θ=0 is predetermined.In regional A, duplicator 16 cecutiency reflect with the minute surface of avoiding detector 26 to receive from glass plate 17 and file 9.Area B comprises the angle of reflection of 15～75o, and duplicator 16 is worked in area B, and back-scattered light 22 is received detector 26.Duplicator 16 no longer detects from the 3rd zone C (back-scattered light 22 of angle of reflection θ＞75o).Giving an example, is that the back-scattered light 22 on strong scattering surface concentrates on around the angle of reflection θ ≈ 45o from blank sheet of paper.In duplicating, any flat speculum or reflector surface all are rendered into black.
Fig. 4 illustrates the safe unit 2 that is arranged on the file 9.Safe unit 2 has the parquets shape pattern 28 of surface element 29, is furnished with trickle meticulous diffraction structure, minute surface and matt structure.During solar radiation, when rotation or inclination safe unit 2, surface element 29 is flash of light or flicker just, and the optics impression of picture on surface 28 is constantly changed.
With picture on surface 28 or replacement table picture on surface 28, safe unit 2 also comprises a security feature 30.In one embodiment, the surface 31 of this security feature 30 is subdivided into first and second local surfaces 32 and 33 separately at least, and the former has one first structure 5 (Fig. 1), and the latter is occupied (Fig. 1) by one second structure 6.
It is favourable that two local surfaces 32,33 have a public boundary, and wherein local surfaces direct neighbor and/or local surfaces 32 or 33 are placed in respectively in another local surfaces 33 or 32.In another embodiment, a plurality of a kind of local surfaces 32 or 33 are placed in respectively on another local surfaces 33 or 32 that constitutes background, make a plurality of a kind of local surfaces 32 and 33 constitute one section eye-catching visual information respectively, for example take the form of text and/or icon or image information.Therefore, security feature 30 is also very big, and surface area is at least 0.5cm
2, better greater than 1cm
2, wherein smallest dimension is at least 0.5mm.
Fig. 5 illustrates the structure of the security feature 30 of a macrostructure 35.With first and second local surfaces 32 and 33 (Fig. 4) of discrete arrangement or replace these local surfaces, single surperficial 31, the macrostructure 35 of surface portion bending also insert security feature 30.Macrostructure 35 is embedded in the reflecting layer 10 that is shaped between layer 4 and the protective layer 7, partly has warp architecture 36 in predetermined surface.The profile of macrostructure 35 is very level and smooth in fine region, perhaps this profile kinoform of a matt structure or trickle meticulous diffraction grating that overlapping, and the spatial frequency of diffraction grating is greater than 2400 lines/mm.The profile of macrostructure 35 is function M (x, y) of coordinate x, y, has determined the surface 31 of security feature 30, wherein at least in the regional area of macrostructure 35, and Δ M (x, y) ≠ 0.Warp architecture 36 is followed known mathematical functions and for example border such as graphic character or letter or the form by function M (x, y) decision, and perhaps macrostructure 35 is a kind of from coin or the known relief pattern of embossment.With respect to the surface of layered combination 1 (Fig. 1), the tangent plane of macrostructure 35 does not all have local tilt γ greater than ± 7 ° at any point.In one embodiment, the reflecting layer 10 of macrostructure 35 is the interfere with layer form.
Therefore, macrostructure 35 has macroscopic optical effect, and the spacing that relates to respect to all consecutive points of the profile altitudinal belt extreme value of this macrostructure is at least 0.3mm.For technical reason, in layered combination 1, the optics resulting structure 5,6 (Fig. 1) that preparation is shaped, 35 variate H are limited to about 10 μ m, and macrostructure 35 is at layer 4 internal shaping that are shaped, and the high mould value of type is H.As a result of the interrupted position 37 of Chu Xianing is not considered extreme value.
Fig. 6 illustrates the plane of file 9 original papers.In this embodiment, security feature 30 has the alphabetical OK as item of information, and it also has first local surfaces 32 with first mirror surface structure 5 (Fig. 1) as a setting by forming with second local surfaces 33 of the second colour killing structure 6 (Fig. 1).When the item of information of security feature 30 or second local surfaces 33 are used white light, with respect to bright background with first local surfaces 32 of first mirror surface structure 5, be reflected into grey In the view of the beholder by minute surface, because the colour killing structure 6 of second local surfaces 33 makes the eyes of incident light 11 (Fig. 1) deflection by the beholder.
Just clear with reference to Fig. 1.When for simplicity's sake, not considering 1 transition of air stratification sub-assembly to the refraction action of light beam.The mirror surface structure 5 that first local surfaces is 32 li is along the direction deflection of reverberation 13 light 11 with incidence angle α incident, and this moment, the azimuth of above-mentioned specular surface 5 was unimportant.If light 11 is incident on the optical grating construction of colour killing structure 6 that local tilt is γ, then incidence angle α will reduce this local tilt γ, because normal 12 has comprised this local tilt γ with surface perpendicular to the optical grating construction inclined plane.In asymmetric optical grating construction, local tilt is corresponding to showing off the angle.Optical grating construction is along reverberation direction deflection incident light 11, and in the case, angle of reflection also reduces local tilt with respect to surface normal, and reduces by two times γ value with respect to normal 12.Since inclination angle γ is at most ± 7 °, so differed at the most by the direction of the light of optical grating construction deflection and reverberation 13 ± 14 °.If the beholder arbitrarily rotates and tilts to have the file 9 (Fig. 6) of safe unit 30, the grating vector of the optical grating construction of its direction of observation and the second colour killing structure 6 is in the isoplanar, because the direction of reverberation 13 is pointed to beholder's eyes, so second local surfaces 33 is suddenly brighter than the background of first local surfaces 32.If above-mentioned " isotropism " matt structure is used as the second colour killing structure 6 of 33 li of second local surfaces, scattered light just is distributed in the scattering cone that matrix 14,15 determines, and is irrelevant with the azimuth.In the direction of reverberation 13, the light 13 of light ratio first local surfaces 32 reflections of second local surfaces, 33 scatterings is more weak.In a certain zone of scattering cone, scattered light intensity is stronger than the scattered light intensity of minute surface, and promptly second local surfaces, 33 to the first local surfaces 32 are brighter.Scattered light intensity reduces rapidly towards scattering cone surface, thereby in scattering cone outside, second local surfaces 33 is darker than first local surfaces 32 once more.Strength Changes between the local surfaces 32,33 of security feature 30 is exactly an authentication feature.
In the security feature 30 of another kind of structure, what arrange as first structure 5 32 li of first local surfaces is zigzag colour killing optical grating construction or " anisotropy " the matt structure with first direction as shown 39, and what be formed in 33 li of second local surfaces as second structure 6 is zigzag colour killing optical grating construction or " anisotropy " matt structure, wherein at least aspect the azimuth, its direction as shown 39 is different from first direction as shown 39.In one example, the zigzag colour killing optical grating construction of first structure 5 is mirror images of second structure 6.
Therefore, the surface brightness maximum with local surfaces 32,33 of colour killing optical grating construction not only appears in azimuthal narrow angular region, and the colour killing optical grating construction is pressed pixel and arranged.In each pixel, the polygon of colour killing optical grating construction or circular trough have constant spatial frequency f.The grating vector of these optical grating constructions is radially indication outwardly from the pixel center.For example forms with the information of local surfaces 32 and 33 expressions respectively, wherein the corresponding grating vector parallel orientation of each pixel or by the pattern orientation of being scheduled to by the square pixel that the length of side is at least 0.5mm.When rotating safe unit 2, predetermined pattern makes maximum surface brightness respectively in local surfaces 32 and 33 activities.
Use various colour killing optical grating constructions in a large amount of another local surfaces 32 and 33 on the background that is placed in a local surfaces 33 and 32 respectively, can obtain another advantage of security feature 30.In one embodiment, in three local surfaces 32 and 33, grating vector is oriented to be parallel with direction as shown 39 respectively.When safe unit 2 when the axis that is parallel to direction as shown 39 tilts, local surfaces 32 and 33 obtains maximum surface brightness continuously.For example these three local surfaces 32 and 33 have the colour killing optical grating construction that spatial frequency f is 160 lines/mm, three optical grating constructions show off angle or changing value difference, its value is 150nm, 250nm and 400nm.Otherwise if the colour killing optical grating construction relates to same profile and different direction as shown 39, then when safe unit 2 winding lines 12 rotated, local surfaces 32 and 33 just obtained their maximum surface brightness continuously.In another embodiment, show off the angle and direction as shown 39 boths change to another local surfaces from a local surfaces 32 and 33.
Fig. 7 illustrates the duplicate of original paper shown in Figure 6.Because duplicator 16 (Fig. 2) is in regional A and C (Fig. 3) deepening, so duplicator only copies in the picture on surface 28 (Fig. 5) light scattering or is diffracted into those surface elements 29 of area B (Fig. 3) lining.For example one of rectangular surface element 29 ' have oneself can be the diffraction grating of optical diffraction in the area B in Fig. 6, but its diffraction grating vector is not oriented orthogonal to the light-emitting section of duplicator 16 in the plane of glass plate 17 (Fig. 2), thereby surface element 29 ' do not satisfy copy condition.Yet, if the intensity of square surface element 29 ' backscattered light 22 (Fig. 2) is not really low, duplicator 16 can both with light secondary colour or this square surface element 29 of grey color reproduction '.By safe unit 2 is rotated in its plane, surface element 29 is differently directed on glass plate 17 (Fig. 2).Its diffraction grating vector in fact be oriented orthogonal to now the square surface element 29 of light-emitting section ', now can be along the direction of back-scattered light 22 diffraction incident light 11 (Fig. 1) fully; Conversely, the strength grade of other surface element 29 is lower, or is actually zero, thus picture on surface 28 (Fig. 6) duplicate the orientation that depends on the glass plate (Fig. 2) of duplicator 16.
Contrast with it, security feature 30 is in the effect difference of each azimuth direction, because the optics resulting structure 5,6 (Fig. 1) of local surfaces 32,33 (Fig. 6), incident light 11 is deflected in regional A and the C, thereby when duplicating, the surface 31 of security feature 30 becomes black with monochromatic reconstruction, and is irrelevant with the azimuthal orientation of file 9 on the glass plate 17 of duplicator 16.Therefore, security feature 30 contains the item of information of can be visual but can not photocopying.The advantage of this security feature 30 is not rely on its azimuthal orientation with respect to duplicator 16.
In another embodiment of safe unit 2, surface element 29 for example extends with the form of narrow shape belt 38 on security feature 30, at least one surface element 29 is one of crooked shape, guilloching, web form, and surface 31 is divided into littler local surfaces 32,33.When safe unit 2 is in predetermined orientation, look like extremely bright lines with 38 the people who watches original paper, the live width with 38 has 0.05mm just much of that; Preferably, live width is 0.1～0.3mm.Utilization is with 38 can prevent that security feature 30 is directly imitated by homemade aluminium foil.
Claims (15)
1. safe unit (2) that comprises the layered combination (1) that is attached on the substrate (9); described layered combination (1) comprises be shaped layer (4), plastic protective layer (7) and reflecting layer (10); reflecting layer (10) is embedded between the shaping layer (4) and protective layer (7) of layered combination (1); wherein the optics resulting structure of security feature (30) (5,6) is shaped as the layer (4) that is shaped; it is characterized in that
At least the one side (31) of security feature (30) has crooked in regional area and/or be divided into first and second local surfaces (32 at least, 33) minute surface macrostructure (35), wherein first local surfaces (32) is taken by first structure (5), the second colour killing structure (6) is shaped as second local surfaces (33), and the optics resulting structure (5 of security feature (30), 6,35) be adapted at around the incident light (11) of predetermined 14 ° of angular regions (ε) intrinsic deflection parallel relation of minute surface reflection direction, and security feature (30) comprises the item of information of can be visual but can not photocopying.
2. safe unit as claimed in claim 1 (2), it is characterized in that, first structure (5) that is arranged on first local surfaces (32) is the level and smooth minute surface that is parallel to layered combination (1) surface, along the minute surface reflection direction incident light (11) is deflected to reverberation (13).
3. 1 safe unit (2) as claimed in claim, it is characterized in that, first structure (5) that is arranged in first local surfaces (32) is a diffraction grating, play the effect that is positioned to the coloured mirror that is parallel to layered combination (1) surface, this diffraction grating is any profile, and spatial frequency (f) is greater than 2400 lines/mm.
4. safe unit as claimed in claim 1 (2), it is characterized in that, first structure (5) that is arranged in first local surfaces (32) is different with second structure (6) of passing through direction as shown (39), the azimuth coverage that two direction as shown (39) comprise, optical grating construction to symmetry is 25～155 °, and the optical grating construction of right title is 25～180 °.
5. as the described safe unit of arbitrary claim (2) in the claim 1～4, it is characterized in that, the zigzag optical grating construction be formed second local surfaces (33) reflecting layer (10) and as the second colour killing structure (6), this zigzag optical grating construction has the spatial frequency (F) that is at most 300 lines/mm and direction as shown (39) and shows off the angle, optical grating construction with respect to the local tilt (γ) on layered combination (1) plane be at most ± 7 °.
6. as the described safe unit of arbitrary claim (2) in the claim 1～3, it is characterized in that, matt structure of weak scattering or kinoform be shaped as second local surfaces (33) reflecting layer (10) and as the second colour killing structure (6), and should the tarnish structure or kinoform in predetermined angular region (ε), center on the narrow scattering cone inscattering incident light (11) of minute surface reflection direction.
7. safe unit as claimed in claim 5 (2), it is characterized in that, go up second local surfaces (33) of arranging a plurality of band colour killing optical grating constructions in first local surfaces (32) with first mirror surface structure (5), formation can be visual but the item of information of reproducible not, and second local surfaces (33) only goes up different in the local tilt (γ) and/or the direction as shown (39) of colour killing optical grating construction.
8. as the described safe unit of arbitrary claim (2) in the claim 1～6, it is characterized in that first local surfaces (32) has a public boundary with second local surfaces (33).
9. safe unit as claimed in claim 8 (2) is characterized in that, arranges a plurality of second local surfaces (33) with the second colour killing structure (6) going up with first local surfaces (32) of first structure (5), and formation can be visual but the item of information of reproducible not.
10. safe unit as claimed in claim 8 (2) is characterized in that, goes up in second local surfaces (33) with the second colour killing structure (6) and arranges a plurality of first local surfaces (32) with first structure (5), and formation can visual but not reproducible item of information.
11., it is characterized in that reflecting layer (10) are the multilayer interfere with layer that comprises dielectric layer and metal level as the described safe unit of arbitrary claim (2) in the claim 1～10, wherein photic zone is towards the layer (4) that is shaped, light tight metal level is towards protective layer (7).
12., it is characterized in that reflecting layer (10) are aluminium laminations as the described safe unit of arbitrary claim (2) in the claim 1～10.
13. as the described safe unit of arbitrary claim (2) in the claim 1～12, it is characterized in that, the surface element (29) that security feature (30) is arranged by amalgamation surrounds, described surface element (29) has the different structure that has the optical diffraction effect, and the picture on surface (28) that constitutes a kind of optical change is arranged in amalgamation.
14. safe unit as claimed in claim 13 (2) is characterized in that, at least one linear surfaces element (29) of picture on surface (28) is gone up with the form of band (38) at security feature (30) and is extended.
15. safe unit as claimed in claim 1 (2) is characterized in that, first structure that is arranged in first local surfaces is a kind of colour killing structure, optically can be distinguished by people's naked eyes with the second colour killing structure.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10216563.7A DE10216563B4 (en) | 2002-04-05 | 2002-04-05 | Security element as photocopy protection |
| DE10216563.7 | 2002-04-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1655953A true CN1655953A (en) | 2005-08-17 |
| CN100551717C CN100551717C (en) | 2009-10-21 |
Family
ID=28458825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03812197 Expired - Fee Related CN100551717C (en) | 2002-04-05 | 2003-04-03 | Prevent the safe unit of photocopying |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1492677B1 (en) |
| CN (1) | CN100551717C (en) |
| AU (1) | AU2003224033A1 (en) |
| DE (1) | DE10216563B4 (en) |
| RU (1) | RU2286887C2 (en) |
| WO (1) | WO2003084765A2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111655506A (en) * | 2018-05-18 | 2020-09-11 | 捷德货币技术有限责任公司 | Security element comprising a micromirror |
| WO2020187287A1 (en) * | 2019-03-19 | 2020-09-24 | 中钞特种防伪科技有限公司 | Optical anti-counterfeiting element and optical anti-counterfeiting product |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004003984A1 (en) † | 2004-01-26 | 2005-08-11 | Giesecke & Devrient Gmbh | Lattice image with one or more grid fields |
| DE102004016596B4 (en) | 2004-04-03 | 2006-07-27 | Ovd Kinegram Ag | Security element in the form of a multilayer film body and method for producing a security element |
| DE102005061749A1 (en) * | 2005-12-21 | 2007-07-05 | Giesecke & Devrient Gmbh | Optically variable security element for making valuable objects safe has an achromatic reflecting micro-structure taking the form of a mosaic made from achromatic reflecting mosaic elements |
| DE102006012732A1 (en) * | 2006-03-17 | 2007-09-20 | Giesecke & Devrient Gmbh | grid image |
| DE102007039996B4 (en) | 2007-02-07 | 2020-09-24 | Leonhard Kurz Stiftung & Co. Kg | Security element for a security document and method for its production |
| DE102007009646A1 (en) * | 2007-02-26 | 2008-08-28 | Giesecke & Devrient Gmbh | Holographic grid image for security element of e.g. bank note, has grid fields which are achromatic grid fields, and formed of sub-ranges overlapping with one another, where dimension of sub-ranges lies below resolution limit of naked eye |
| DE102007063275A1 (en) * | 2007-12-27 | 2009-07-02 | Giesecke & Devrient Gmbh | Security feature for high tilt angles |
| DE102012105444A1 (en) | 2012-06-22 | 2013-12-24 | Ovd Kinegram Ag | Security element with diffractive structure |
| DE102013001734A1 (en) * | 2013-01-31 | 2014-07-31 | Giesecke & Devrient Gmbh | Security element with channel or rib-shaped structural elements |
| CN115230363B (en) * | 2021-04-25 | 2024-03-29 | 中钞特种防伪科技有限公司 | Optical anti-counterfeiting element, design method thereof and anti-counterfeiting product |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CH659433A5 (en) * | 1982-10-04 | 1987-01-30 | Landis & Gyr Ag | DOCUMENT WITH A REFLECTIVE OPTICAL SECURITY ELEMENT. |
| EP0201323B1 (en) | 1985-05-07 | 1994-08-17 | Dai Nippon Insatsu Kabushiki Kaisha | Article incorporating a transparent hologramm |
| ATE69407T1 (en) * | 1988-03-03 | 1991-11-15 | Landis & Gyr Betriebs Ag | DOCUMENT. |
| JPH02139480A (en) | 1988-11-21 | 1990-05-29 | Kao Corp | Softening finishing agent |
| EP0375833B1 (en) * | 1988-12-12 | 1993-02-10 | Landis & Gyr Technology Innovation AG | Optically variable planar pattern |
| DK0522217T4 (en) * | 1991-07-10 | 2002-10-14 | Banque De France | Value or security document with anti-counterfeiting device, as well as a carrying strap with transfer motif for the production of such a document |
| DE4343387A1 (en) * | 1993-12-18 | 1995-06-29 | Kurz Leonhard Fa | Visually identifiable, optical security element for documents of value |
| CH693316A5 (en) * | 1998-01-27 | 2003-05-30 | Ovd Kinegram Ag | Surface patterns with superimposed diffraction gratings. |
| CH693427A5 (en) * | 1998-01-27 | 2003-07-31 | Ovd Kinegram Ag | Surface pattern. |
| DE19915943A1 (en) * | 1999-04-09 | 2000-10-12 | Ovd Kinegram Ag Zug | Decorative film |
| DE10127979C1 (en) * | 2001-06-08 | 2002-11-07 | Ovd Kinegram Ag Zug | Diffractive security element for verifying document validity has mosaic of optical structure elements overlaid by individual cell pattern |
-
2002
- 2002-04-05 DE DE10216563.7A patent/DE10216563B4/en not_active Expired - Fee Related
-
2003
- 2003-04-03 RU RU2004132235/12A patent/RU2286887C2/en not_active IP Right Cessation
- 2003-04-03 AU AU2003224033A patent/AU2003224033A1/en not_active Abandoned
- 2003-04-03 WO PCT/EP2003/003481 patent/WO2003084765A2/en not_active Application Discontinuation
- 2003-04-03 CN CN 03812197 patent/CN100551717C/en not_active Expired - Fee Related
- 2003-04-03 EP EP03720417.9A patent/EP1492677B1/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111655506A (en) * | 2018-05-18 | 2020-09-11 | 捷德货币技术有限责任公司 | Security element comprising a micromirror |
| CN111655506B (en) * | 2018-05-18 | 2021-12-28 | 捷德货币技术有限责任公司 | Security element comprising a micromirror |
| WO2020187287A1 (en) * | 2019-03-19 | 2020-09-24 | 中钞特种防伪科技有限公司 | Optical anti-counterfeiting element and optical anti-counterfeiting product |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2003224033A1 (en) | 2003-10-20 |
| RU2004132235A (en) | 2005-09-27 |
| EP1492677A2 (en) | 2005-01-05 |
| DE10216563A1 (en) | 2003-10-23 |
| AU2003224033A8 (en) | 2003-10-20 |
| EP1492677B1 (en) | 2014-05-14 |
| CN100551717C (en) | 2009-10-21 |
| DE10216563B4 (en) | 2016-08-04 |
| WO2003084765A3 (en) | 2004-02-12 |
| WO2003084765A2 (en) | 2003-10-16 |
| RU2286887C2 (en) | 2006-11-10 |
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