CN104023991A

CN104023991A - Optically variable security element

Info

Publication number: CN104023991A
Application number: CN201280065704.6A
Authority: CN
Inventors: A.贝尔; M.拉姆; A.格雷加勒克; G.德普塔; W.德夫勒; H.雷纳; S.弗罗伊特斯米德尔
Original assignee: Giesecke and Devrient GmbH
Current assignee: Jiejia German Currency Technology Co Ltd
Priority date: 2011-11-04
Filing date: 2012-11-05
Publication date: 2014-09-03
Anticipated expiration: 2032-11-05
Also published as: AU2012331447A1; EP2773514A1; WO2013064268A1; AU2012331447B2; CN104023991B; DE102011117677A1; AU2016238893A1; PL2773514T3; EP2773514B1

Abstract

The invention relates to an optically variable security element (12) for security papers, value documents and other data carriers, with a substantially transparent carrier (20) having opposing first and second main surfaces (22, 24), an arrangement of micro-lenses (26) on the first main surface (22) of the carrier (20), and a laser-sensitive recording layer (32) arranged on the second main surface of the carrier (20). According to the invention, the micro-lens arrangement (26) is furnished with a laser-sensitive cover layer (28) having at least one cut-out (30) produced by the effect of laser radiation and extending over several micro-lenses (26), the laser-sensitive recording layer (32) comprises a plurality (34) of micro-markings (36) produced by the effect of laser radiation, wherein each micro-marking (36) is associated with one micro-lens (26) and is visible through the associated micro-lens (26) during inspection of the security element (12), and the plurality (34) of micro-markings (36) on the carrier (20) is arranged precisely aligned directly opposite the at least one cut-out (30).

Description

Optically variable security element

Technical field

The present invention relates to a kind of optically variable security element for cheque paper, value document and other data medium, comprise the substantially transparent with the first and second relative first type surfaces support member, be arranged in the microlens device on the first first type surface of support member and be arranged in the laser-sensitive recording layer on the second first type surface of support member.The invention still further relates to a kind of for the manufacture of this Security element with there is the method for data medium of this Security element.

Background technology

In order to protect; data medium (such as value document or identification document) and other valuables (such as brand objects) have Security element conventionally; described Security element allows the authenticity of authentication data carrier, and serves as the safeguard procedures to unauthorized copying simultaneously.

There is the Security element of the effect that depends on visual angle having effect aspect protection authenticity, because they even can not be copied by state-of-the-art duplicator.At this, Security element has optically variable element, and from different visual angles, optically variable element presents different image impression to beholder, and according to visual angle display case as other color or brightness impression and/or other pictorial pattern.

For example,, such as the ID card of credit card or personal identity card is individualized by laser engraving for a long time.By in laser engraving individualized, to expect that the form of mark suitably guides laser beam can irreversibly change the optical properties of baseplate material.This laser labelling is convenient to personalization and the Security element of data splitting carrier, and more freely they is incorporated in printing images than conventional personalized (ratio method for numbering serial as is known).

Document EP0 219 012 A1 have described a kind of identity card with part lens lattice.Via this lens pattern, information segment utilizes laser to inscribe in identity card with different angles.Described information segment also can only arrive so that described angle is perceived subsequently, makes, in the time of inclination identity card, to present different information segments.

Summary of the invention

Based on this, the present invention's object is to provide a kind of Security element of the above-mentioned type with attracting visual appearance and high anti-counterfeiting.

This object realizes by the feature of independent claims.Development example of the present invention is the theme of dependent claims.

According to the present invention, in general Security element, provide:

-microlens device has laser-sensitive cover layer, and laser-sensitive cover layer has at least one gap being produced by laser emission effect, extend in multiple micro-transmission range;

-laser-sensitive recording layer has the multiple micro-mark being produced by laser emission effect, and each micro-mark is associated with microlens, and in the time watching Security element, described micro-mark is visible via the microlens being associated; And

-multiple micro-marks are arranged on support member with the accuracy registration direct relative with at least one gap.

The lens that size is less than naked eyes resolution ratio are called microlens.Microlens preferably develops into sphere or aspheric, and for example in banknote, advantageously have between between 5 μ m and 10 μ m, preferably between between 10 μ m and 50 μ m, the diameter between 15 μ m and 20 μ m particularly preferably.For card application, microlens also can be larger, and have for example diameter between 100 μ m and 300 μ m.In described design, microlens also can develop into cylindrical lens.

In all embodiments, described gap advantageously generates the pattern of figure, character or coding form.Described gap preferably can be perceived by naked eyes, and especially has the size between 0.5mm and 3cm.Distance between cover layer and recording layer is provided by the thickness of support member, and corresponds essentially to the focal length of uncoated microlens.

In a preferred embodiment, micro-mark is formed by the micropore in recording layer, and the micropore being especially shaped by circular micropore or figure forms.The definite size of micro-mark or micropore especially depends on the shape (spherical, non-spherical, cylindricality) of microlens, as described below, also depends on the incidence angle of laser emission.

In other embodiments, except the micropore in recording layer, micro-mark also can be made up of the dimmed or non-dimmed variation of the visual appearance of recording layer.In general, micro-mark can or remove by the color change of laser-sensitive recording layer and form.Removing of laser-sensitive recording layer also comprises that only part removes, and this is optically corresponding to luminous.The color change of recording layer or remove can be based on heat, photochemistry or combination process.In order to produce transmitted light effect, micro-mark has the opacity of reduction, and under limiting case, is formed by above-mentioned micropore.For reverberation effect, the opacity of reduction is not definitely compulsory, and described change also can be made up of for example dimmed.

In certain embodiments, micro-mark is all less than the microlens being associated.At this, micro-mark and the Area Ratio of the microlens being associated can be less than 1.0 or be less than 0.5, be less than 0.2 or be even less than 0.1.Circular micropore for example can have between the diameter between 2 μ m and 3 μ m between 1 μ m and 15 μ m, between 1.5 μ m and 5 μ m and especially.

Particularly advantageously, Security element is translucent in the region of gap and relative micro-mark, especially has the transmissivity between 20% and 90%.Under any circumstance, the transmissivity of Security element in gap area is apparently higher than the transmissivity still having in tectal region (normally opaque or have and be less than 15%, be especially less than 10% transmissivity).So, Security element has obvious transparent effect, discussed in more detail below.

In a preferred embodiment, micro-mark utilizes laser emission to introduce recording layer via microlens device from least two different directions.In the time watching subsequently, can be substantially perceive each micro-mark from micro-view direction being introduced into while producing that is marked at.Correspondingly, in the present embodiment, can perceive micro-mark from least two different view directions, make to produce and tilt or alternate images.Can be associated with implication from the visible pattern of different view directions, for example, as handspring book (flip-book), and illustrate the image sequence of advancing in the time that Security element tilts before beholder.If the definite part of pattern is kept intact under all visual angles, this region also can be embodied as the gap area in recording layer.

Introduce angle and visual angle thus and also can within the scope of gap size, change continuously, can consider the variation on one or two direction in space.In the time watching, transparency and the brightness under transmitted light continuously change along with visual angle, discussed in more detail below.

In favourable modified example of the present invention, except the gap that effect by laser emission produces, cover layer also has the white space extending within the scope of multiple microlenses, described white space not with directly relative micro-mark registration.This white space can for example remove and produce via tectal large area before producing micro-mark, for example, via washing away technique or etch process.

In this modified example of the present invention, particularly advantageously, gap forms the first pattern of figure, character or coding form.In tectal white space, other the micro-mark being produced by laser emission effect is present in recording layer, and forms the second pattern of figure, character or coding form.In addition, described other micro-mark is also all associated with microlens, and is preferably less than the microlens being associated, and in the time watching Security element, micro-mark is visible via the microlens being associated.Micro-mark also can have other attribute of mentioning for first micro-mark, especially relevant with the shape and size of micro-mark.

In the time watching under reverberation, only the first pattern is appreciable, and in the time watching under transmitted light, the first and second patterns are appreciable, and two patterns are complimentary to one another to form complete pattern.In the time of independent consideration, incomplete pattern is shown in the power that attracts attention under reverberation, and promotes beholder under transmitted light, to watch seeing complete pattern.Security element has high attention value (attention value) thus, and high anti-counterfeiting is also provided, because when watch the special complementary effect when being converted to transmitted light and watching to reappear difficulty from reverberation.If two patterns produce in same operation, the first and second patterns accuracy registration each other.In addition, white space itself can develop into the form of another pattern.

Another kind of like in favourable modified example, except the micro-mark being produced by laser emission effect, recording layer has the white space that size is greater than the size of microlens of the present invention, described white space not with directly relative gap registration.In addition, this white space in recording layer can for example produce via washing away technique.

In this modified example of the present invention, particularly advantageously, first pattern that is positioned at those subregions formation figure, character or codings on recording layer in gap, second pattern that is positioned at those subregions formation figure, character or codings on white space in gap.In the time watching under transmitted light, the first and second patterns are appreciable, and two patterns are complimentary to one another to form complete pattern.In favourable embodiment, for example, in the time that cover layer and recording layer are chosen to mate in color, the first pattern is non under reverberation.

In another favourable modified example of the present invention, except the gap being produced by laser emission effect, cover layer has the white space extending within the scope of multiple microlenses, described white space not with directly relative micro-mark registration.Directly relative with tectal described white space, applicable white space is arranged in recording layer.At this, the white space in cover layer and recording layer advantageously produces by the laser light strikes of same laser bundle simultaneously., produce compared with micropore with above-mentioned in another position, laser energy is increased to not only ablation cover layer but also completely ablation recording layer for this reason.

At this, in a particularly advantageous embodiment, described gap forms the first pattern of figure, character or coding form, and tectal white space forms the second pattern of figure, character or coding form.So, in the time watching under reverberation, only the second pattern is appreciable, and in the time watching under transmitted light, the first and second patterns are appreciable, and two patterns are complimentary to one another to form complete pattern.

In advantageous embodiment of the present invention, Security element comprises micro-optics graphic display unit simultaneously, especially More's amplifying device, More's type micro-optics amplifying device or modulus amplifying device.

The basic principle of this micro-optics graphic display unit illustrated in document WO2009/000528 A1, and the disclosure of the document is incorporated to this description as quoting.In this case, except micro-mark, recording layer preferably includes the pattern image that is divided into multiple unit, in each unit, be furnished with the imaging region of predetermined the 3rd pattern, microlens device forms in the time of viewing graphic pattern image by being arranged in the microlens grid of imaging region reconstruction the 3rd pattern in unit.

In preferred variant of the present invention, recording layer, cover layer or two-layer be opaque.Especially, recording layer and/or cover layer can be formed or be comprised opaque metal level by opaque metal level.At this, term metal also comprises metal alloy.Layer by for example aluminium, copper, chromium, silver, gold or Al-Cu alloy composition can be considered to opaque metal level.In some designs, between cover layer and recording layer, there is color contrast.In this case, for example, select aluminium as tectal material, and copper is as the material of recording layer.In other design, cover layer and recording layer are rendered as in color and mate.In this case, select identical material for two-layer, or select to have the material of similar color.

Except metal level, there is gamut effect and provide the thin-film component of optically-variable outward appearance also can be considered to for cover layer and recording layer to cover layer or recording layer itself.This thin-film component is made up of absorbed layer, dielectric wall and chaff layer conventionally.At this, reflector layer is designed to enough thin, makes it to utilize laser emission and has gap or the micropore of expectation.

Of the present invention another kind of like in favourable modified example, recording layer, cover layer or two-layer be translucent, preferably all have between between 20% and 90%, the transmissivity between 40% and 80% especially.

According to of the present invention another kind of like favourable modified example, recording layer, cover layer or two-layerly formed by laser-sensitive ink layer.Certainly, the possibility of mentioning also can combination with one another, so for example, recording layer is formed by laser-sensitive ink layer, and cover layer is formed by opaque metal level.

Of the present invention another kind of like in favourable modified example, cover layer is the hyaline layer of the radius of curvature at least 50% of the micro-transmission of change, especially makes the hyaline layer of microlens equalization.In this modified example of the present invention, recording layer can be opaque or translucent.The refractive index of hyaline layer is the magnitude of the refractive index in microlens aptly, and especially differs and be less than 0.3 with the refractive index of microlens, is preferably less than 0.15.

According to another embodiment of the present invention, micro-mark is formed by the micropore in recording layer, and reflecting layer or printed layers are arranged on recording layer.In this embodiment, the diameter of micropore is advantageously less times greater than 5 μ m, be especially greater than 10 μ m.In the favourable modified example of this embodiment, reflecting layer or printed layers do not have micropore.So, in the time watching under reverberation, Security element shows tilted image, and wherein, the pattern being formed by multiple micropores can perceive from certain visual angle under reflection or reverberation, and disappears in the time that Security element tilts.

The present invention also comprises a kind of data medium, especially value document, and such as banknote, passport, certificate, identity card etc., it has the Security element of described type.In favourable modified example of the present invention, Security element can especially be arranged among the window area of data medium or through hole or on.

Of the present invention another kind of like in favourable modified example, data medium comprises data medium substrate, data medium substrate has the marked region being produced by laser emission effect, described marked region is in abutting connection with at least one in the gap producing in Security element by laser emission, and with described gap registration.In marked region, the visual appearance of data medium substrate changes.Especially, by the effect of laser emission, color component or metallics can remove from data medium substrate, or make data medium substrate foamed.Under latter event, add tangibly mark to change visual appearance.Because the registration of gap and marked region is arranged, Security element is closely connected with data medium in mode that visually and if desired can machine dismounting.Discussed in more detail below, utilize same laser bundle production gap and marked region in same operation to be convenient to registration and arrange.Except visual attraction, the data medium being so connected with Security element has the anti-counterfeiting of increase, because from data medium removes, Security element applies again registration.In addition, for unprofessional person, any operation of data medium can be easy to perceive thus.

Gap and marked region form complete information segment together with can be especially, such as the diagrammatic representation of polymerization or continuous alphanumeric character string.In gap area, Security element is to depend on visual angle and translucent, makes the part that is arranged in gap of complete information fragment only from certain visual angle.By contrast, the part of the marked region that is arranged in data medium substrate of complete information fragment is always visible.Therefore, in the time that data medium tilts, only can see a part for complete information fragment from some visual angles, this part and other visual angle complementation are to form whole complete information segment.

The present invention also comprises the method for a kind of manufacture for the optically variable security element of cheque paper, value document and other data medium, wherein

-support member of substantially transparent with the first and second relative first type surfaces is set, by microlens Plant arrangement on the first first type surface of support member;

-laser-sensitive recording layer is arranged on the second first type surface of support member;

-provide laser-sensitive cover layer to microlens device;

-in laser-sensitive cover layer, be created at least one gap of extending within the scope of multiple microlenses by the effect of laser emission;

-produce multiple micro-marks by acting in laser-sensitive recording layer of laser emission, each micro-mark is associated with microlens, and in the time watching Security element, micro-mark is visible via the microlens being associated; And

At this, advantageously in same operation, produce gap in laser-sensitive cover layer and relative micro-mark in laser-sensitive recording layer by same laser bundle.In certain embodiments, micro-mark all develops into and is less than the microlens being associated.

In favourable method modified example, recording layer, produce micro-mark from least two different directions via microlens device.

Finally, the present invention also comprises a kind of method of the data medium of manufacturing the above-mentioned type, wherein,

-data medium substrate is provided;

-support member of the substantially transparent with the first and second relative first type surfaces is provided, by microlens Plant arrangement on the first first type surface of support member;

-provide laser-sensitive cover layer to microlens device;

-will there is laser-sensitive recording layer, microlens device and the tectal support member of laser-sensitive to be applied to data medium substrate; And

-in same operation, the effect by same laser bundle by laser emission,

A) in laser-sensitive cover layer, produce at least one gap of extending within the scope of multiple microlenses;

B) in laser-sensitive recording layer, produce multiple micro-marks, each micro-mark is associated with microlens, and in the time watching Security element, micro-mark is visible via the microlens being associated, and multiple micro-marks are arranged on support member with the accuracy registration direct relative with at least one gap; And

C) being arranged in and will thering is described recording layer, described microlens device and described tectal support member and be applied to the data medium substrate of the region exterior of described data medium substrate, produce in abutting connection with tectal marked region in described at least one gap.

Via the effect of laser emission, in marked region, color component or metallics preferably remove from data medium substrate, or make data medium substrate foamed.

The generation of gap and multiple micro-marks preferably utilizes first group of laser parameter to realize, and the generation of marked region utilizes second group of different laser parameters to realize.The fact that such process causes is, compared with the generation of marked region, the generation of gap and micro-mark needs different laser parameters, such as the laser energy of different brackets.At this, the position at marked region in abutting connection with the gap in cover layer, the laser parameter of laser beam is changed between first and second groups of laser parameters.Described conversion is moment generation in fact, thereby realizes the change of the accurate restriction of laser parameter.Via continuous wave beam control, although laser parameter changes, still can realize the registration of gap and marked region and arrange.

Brief description of the drawings

Below with reference to brief description of the drawings other exemplary embodiment of the present invention and advantage, in accompanying drawing, do not draw in proportion to improve their definition.

In accompanying drawing:

Fig. 1 is the schematic diagram of the banknote of creative optically variable security element, and optically variable security arrangements of elements is on the through hole of banknote;

Fig. 2 is schematically illustrated according to the cross section of the layer structure of Security element of the present invention;

(a) of Fig. 3 and two intermediate steps of the Security element of shop drawings 2 (b) are shown;

Fig. 4 is in the time watching in the past, the Security element of Fig. 2 under reverberation (a) and under transmitted light the visual appearance of (b);

Fig. 5 is in the time watching from afterwards, the Security element of Fig. 2 under reverberation (a) and under transmitted light the visual appearance of (b);

Fig. 6 is that the exemplary embodiment of vertical angle θ is forgiven in laser emission in the time producing gap;

Fig. 7 is the cross section of another exemplary embodiment of the present invention along the line VII-VII of Fig. 8 (a);

Fig. 8 is in the time watching in the past, the Security element of Fig. 7 under reverberation (a) and under transmitted light the visual appearance of (b);

Fig. 9 is the cross section of another exemplary embodiment of the present invention along the line IX-IX of Figure 10 (a);

Figure 10 be in the time watching under reverberation in the past (a), when under transmitted light when the same side is watched (b), in the time watching from afterwards under reverberation (c) and in the time watching from the same side under transmitted light (d), the visual appearance of the Security element of Fig. 9;

(a) of Figure 11 is the modified example diagram as the Security element of Fig. 9 of Figure 10 to (d);

Figure 12 is schematically illustrated form simultaneously micro-optics show arrange according to the cross section of Security element of the present invention;

Figure 13 is exemplary embodiment of the present invention, and wherein, cover layer is formed by laser-sensitive clear coat;

Figure 14 is the exemplary embodiment that produces the micropore of figure shaping in recording layer;

(a) of Figure 15 and (b) top view of recording layer according to an exemplary embodiment of the present invention with the micropore that figure is shaped is all shown;

Figure 16 is the cross section of another exemplary embodiment of the present invention;

Figure 17 is in the time watching in the past, the Security element of Figure 16 under reverberation (a) and under transmitted light the visual appearance of (b); And

Figure 18 is another exemplary embodiment of the present invention that demonstrates gap tilt effect under reverberation.

Detailed description of the invention

By the example of the Security element for banknote, the present invention is described now.For this reason, Fig. 1 illustrates the schematic diagram of the banknote 10 of creative optically variable security element 12, and optically variable security arrangements of elements is on the through hole 14 of banknote 10.Under transmitted light, Security element 12 is shown as translucent in subregion 16, and in each situation of reverberation and transmitted light, because its application on opening 14 can be watched from He Qi rear, its front.From described different view directions, Security element 12 demonstrates different visual appearances in each situation, as in detail illustrated above.

Fig. 2 is schematically illustrated according to the cross section of the layer structure of Security element 12 of the present invention, only needs the principle of work and power of a part of layer structure shown in illustrating.Security element 12 comprises the support member 20 of substantially transparent, and it is formed by transparent plastic paillon foil conventionally, PETG (PET) paillon foil that for example approximately 20 μ m are thick.

Support member 20 has the first and second relative first type surfaces, and the first first type surface 22 has the layout of microlens 26.In special exemplary embodiment, microlens 26 with the formal rule of microlens grid arrange, and form and there is preselected symmetric two-dimentional Bravias lattice on the surface of support member paillon foil.For example, the Bravias lattice of microlens 26 can have hexagonal lattice symmetry, or also has low-symmetry, such as the symmetry of parallelogram dot matrix.

The microlens 26 of sphere or aspheric surface design preferably has the diameter between 15 μ m and 30 μ m, and can not perceived by naked eyes thus.The curvature of the thickness of support member 20 and microlens 26 cooperates each other, makes the focal length of microlens 26 substantially be equivalent to the thickness of support member 20.

The microlens grid of the first first type surface 22 has opaque laser-sensitive cover layer 28, and in the exemplary embodiment, opaque laser-sensitive cover layer is formed by the thick aluminium lamination of 50nm.

By laser emission effect, one or more gaps 30 are introduced in cover layer 28, one or more gaps form the first pattern of figure, character or coding form.At this,, multiple, even extend, conventionally because gap 30 can be seen by naked eyes therefore conventionally have the size of several millimeters on several thousand microlenses 26 in gap 30.In order to illustrate, only demonstrate the single gap 30 with maple leaf 16 shapes referring to figs. 1 to the Security element 12 of 5 descriptions.If gap 30 has for example 50mm ²area,, in the lens diameter situation of 25 μ m, extend on approximately 80000 to 100000 microlenses in gap.Therefore, it should be understood that microlens in accompanying drawing and the dimension scale in gap only obviously illustrate large.

On the second first type surface 24 of support member 20, be furnished with laser-sensitive recording layer 32, in the exemplary embodiment, it is formed by the thick copper layer of 60nm.

Effect by laser emission is introduced the multiple 34 round micropores 36 with 2 μ m to 3 μ m diameters in recording layer 32.Even if describe the present invention in detail for micropore below, but it should be understood that except micropore, also can use other micro-mark, such as the color change interval in ink layer.

Gap 30 forms in the mode of describing in detail below by same laser bundle in same operation with relative micropore 36 simultaneously, makes gap and micropore not have each other registration tolerance.So, multiple 34 micropores in recording layer 32 and gap 30 in cover layer 28 directly relative, be arranged on support member 20 accuracy registration

In order to manufacture Security element 12, first apply with the thick aluminium lamination 28 of penetrating 50nm the micropore grid being present on support member 20, as shown in Fig. 3 (a).Apply the second first type surface 24 with penetrating 60nm thick copper layer 32.In these layer thickness situations, aluminium lamination 28 and copper layer 32 are opaque.Due to aluminized coating 28, no longer optics is effective in coating zone for microlens 26.

Then, for example, from the first first type surface 22 laser emissions 40 for side (Nd:YAG, Nd:YVO ₄or the radiation of fibre laser) clash into the support member 20 so applying, aluminium lamination 28 ablations are become to expect to the shape in gap 30.At this, laser beam 40 can focus in advance.Due to the ablation of aluminium lamination 28, the optics validity of microlens 26 is recovered in 30 regions, gap.Now, if in the time of laser light strikes, the laser energy of use is higher than making the required energy of aluminium lamination 28 de-metallizations, after ablation, residual amount of energy still can be remaining, gathers on recording layer 32, by the effective microlens 26 of present optics as shown in Fig. 3 (b) reference number 42.If select rightly laser energy, residual amount of energy can be not too high to such an extent as to the recording layer 32 of ablation microlens 26 belows completely, but still be enough in recording layer 32, generate micropore 36, and the size of micropore is less than the size of relevant microlens 26.

Via the method, attainable, each micropore 36 is associated with microlens 26, via microlens 26, generates micropore 36 in the time of laser light strikes, via microlens, in the time watching Security element subsequently, can see micropore 36.So, multiple 34 micropores 36 only generate with accurate registration in the region of corresponding relative gap 30.Due to the small size of the microlens 26 of 20 to 30 μ m only, guarantee in addition, from 20 to 30cm orthogonal viewing distance, the region in gap 30 is consistent with the region 34 with multiple micropores 36.

Fig. 4 illustrate when from the first first type surface 22 sides () while watching, the visual appearance of the Security element 12 so generating, (Fig. 4 (a) is illustrated under reverberation, at reflex time) outward appearance, Fig. 4 (b) is illustrated in the outward appearance of (, in the time of transmission) under transmitted light.

Under reverberation, in 30 outsides, gap, the glittering cover layer 28 of silver color being made up of aluminium has occupied outward appearance.In gap 30, remove cover layer 28, beholder sees the coppery of recording layer 32.Due to their small size, under reverberation, the micropore 36 in recording layer 32 is difficult to or almost can not be perceived by naked eyes, and it is penetrating metal level that recording layer 32 is looked.Therefore, under reverberation, beholder sees the coppery maple leaf 16 under silver background, as shown in Fig. 4 (a).

In the time watching under transmitted light, in 30 outsides, gap, due to opaque cover layer 28, Security element 12 looks it is dark.By contrast, in 30 inside, gap, due to multiple 34 micropores 36, recording layer 32 is translucent according to view direction.In this view direction, owing to watching micropore 36 via microlens 26, so the visual angle that micropore 36 all can be substantially introduced when utilizing laser beam 40 to produce perceives.And around described central visual angle, micropore 36 can perceive within the scope of certain angle, this angular range depends primarily on the diameter of micropore 36.Described diameter especially draws from thickness, the laser energy of use and the layer thickness of recording layer 32 of lens attribute (being first the focal length of microlens under optical maser wavelength), support member 20 again.Via suitably selecting and coordinate described parameter, can in wide region, set as required the diameter of micropore 36 and the angle square cun in property region as can be seen here.

With reference to the diagram of figure 4 (b), the micropore 36 of described exemplary embodiment generates under the vertical incident of laser emission 40, as Fig. 3.In the time vertically watching Security element 12, micropore 36 also can be seen via microlens 26 thus, makes from described visual angle, and it is translucent that the region in gap 30 looks under transmitted light.Beholder sees the bright maple leaf 16 under dark background so, as shown in Fig. 4 (b).

Fig. 5 illustrates in the time watching from the second first type surface 24 sides (rear), the visual appearance of Security element 12, and Fig. 5 (a) is illustrated in the outward appearance under reverberation, and Fig. 5 (b) is illustrated in the outward appearance under transmitted light.

Under reverberation, only can see coppery recording layer 32 from rear, due to their small size, micropore 36 is difficult to or almost can not with the naked eye perceives under reverberation.Therefore, under reverberation, beholder can see penetrating coppery metal level from afterwards, as shown in Fig. 5 (a).

In 30 outsides, gap, in the time watching under transmitted light, due to opaque recording layer 32, Security element 12 looks it is dark.By contrast, in 30 inside, gap, due to multiple 34 micropores 36, recording layer 32 looks it is translucent in polarizers of big angle scope.From watch differently from front, in the time watching from rear, cannot see micropore 36 via microlens 26.Definitely, microlens 26 is collected from the light of the first first type surface 22 incidents, and is gathered on micropore 36, makes to obtain wide range, and wherein, the micropore 36 that is positioned at rear looks and becomes clear.Therefore, beholder sees the bright maple leaf 16 under dark background, as shown in Fig. 5 (b).

In just described exemplary embodiment, for the purpose of simplifying the description, only from single direction, definite in micropore being introduced recording layer perpendicular to the direction of first type surface 22,24.But, preferably recording layer, generate the micropore according to Security element of the present invention via microlens grid from least two different directions.For example, Fig. 6 illustrates exemplary embodiment, wherein, in the time generating gap 30 ', laser emission 40 and the angled θ of vertical direction 44.Gap 30 ' is in fact compared and is had nothing different from the gap 30 generating under vertically clashing into, except the micropore 36 ' generating in recording layer 32 is offset from lens centre.Thus, in the time watching subsequently, micropore 36 ' substantially only can be from perceiving about the visual angle of vertical direction tilt angle theta.Certainly,, at this, due to the size of micropore 36 ', also can obtain angle θ certain Variable Area around.

Therefore, there is the micropore 36 of different visual angles θ by generation, can be created in and under transmitted light, all become translucent region from different perspectives, thereby produce tilted image.At this, in certain embodiments, in gap 30,30 ', micropore 36,36 ' all has constant view angle theta 30, θ 30 ', and different gap 30,30 ' visual angle difference, in other words, θ 30 ≠ θ 30 '.In other design, the multiple micropores that can see from different spaces direction in gap 30, are there are.

In a preferred embodiment, introduce angle and view angle theta at one or even on two direction in spaces, in the size range in gap 30, change continuously.For example, can realize this continuously changing via the applicable deflection system for laser emission.In the time watching under transmitted light, in the time that Security element tilts, transparent marking continuously changes in gap 30.

For example, the micropore 36 that is positioned at left hand edge place, gap 30 shown in Figure 4 and 5 can be introduced (introducing angle θ=0 °) vertically, be positioned at the angle that the micropore of left hand edge can θ=40 ° and be introduced into, introduce angle θ and increase continuously from left hand edge to right hand edge from 0 ° to 40 °.When watch vertically Security element anterior under transmitted light time, the left side of maple leaf 16 looks very bright, because beholder sees the micropore 36 of introducing with vertical angle via microlens 26 there.Towards the right hand edge of maple leaf 16, brightness reduces continuously, because along with the angle θ increasing, micro-transmission 26 is gathered on the edge or perimeter of micropore 36 more.

The Security element if beholder is tilted to the left, watch the region continuous tilt of micropore 36 with corresponding introducing angle, until the gradient of 40 °, maple leaf right side look very bright till, this is because beholder introduces micropore 36 with being gathered under θ=40 ° of microlens 26 now.Towards the left hand edge of maple leaf 16, brightness reduces continuously, because along with the angle θ reducing, microlens 26 is gathered on the edge or perimeter of micropore 36 now more.

Fig. 7 schematically shows the cross section of another exemplary embodiment of the present invention, and Fig. 8 illustrates its visual appearance under reverberation and transmitted light.In Security element 50, except the described gap 30 that effect by laser emission produces, cover layer 28 has the white space 52 extending in multiple micro-transmission range, described white space not with directly relative micropore 36 registrations.For example, the metallization removal that can be before laser light strikes washes away technique via utilization is produced described white space 52, to produce gap 30.Wash away in technique this, before metallization, soluble can being preferably stamped on the support member 20 of expecting metallization removal region shape by washing oil China ink, after metallization, can rinse out with solvent by washing oil China ink.In document WO99/13157, can obtain this other details of washing away technique, the disclosure of the document is incorporated in the application as a reference.

In example shown embodiment, gap area 52 occupies the Lower Half of Security element 50, as shown in Fig. 8 (a).But in principle, white space 52 can arbitrary graphic, the form development of character or coding.

Gap 30 forms the first pattern now, and in example shown embodiment, the first pattern provides (Fig. 8 (a)) by the first half of numeric string " 10 ".In gap area 52, via laser light strikes, multiple 54 micropores 56 produce similarly, and form the second pattern that the current Lower Half by numeric string " 10 " accurately forms.In gap area 52, because the major part of laser energy arrives recording layer 32, so the diameter of micropore 56 is larger than the diameter of micropore 36 a little.For fear of described variation, can suitably reduce the laser energy in gap area 52.

Fig. 8 illustrates in the time watching from the first first type surface 22 1 sides, the visual appearance of the Security element 50 of so producing.

Under reverberation, in gap 30 and gap area 52 outsides, the glittering aluminium cover layer 28 of silver color is determined described outward appearance.In the region of gap 30 and gap area 52, remove cover layer 28, beholder sees the coppery of recording layer 32.As Fig. 4, due to their small size, under reverberation, micropore 36 is difficult to or almost can not with the naked eye perceives, and it is penetrating metal level that recording layer 32 is looked.Under reverberation, beholder only sees the first half of numeric string " 10 " thus, as shown in Fig. 8 (a).Incomplete pattern is described and is paid close attention to, and impels beholder under transmitted light, to watch it to see complete pattern " 10 ".

In the time watching under transmitted light, due to the micropore 36 or 56 comprising, first pattern in gap 30 and the second pattern 54 look it is to depend on view direction and translucent, as illustrated with reference to figure 4 (b).By contrast, at described region exterior, Security element 50 is opaque, because beholder can not pay close attention to opaque cover layer 28 or similar opaque recording layer 32.Aberration between coppery recording layer 32 and silver color cover layer 28 obviously incorporates in background under transmitted light, and is conventionally difficult to or almost can not perceives.From beholder, the first pattern 30 and the second pattern 54 are complimentary to one another to be formed on the bright complete pattern of numeric string " 10 " form under even dark background, as shown in Fig. 8 (b) thus.

In the time watching Security element 50 from the second first type surface 24 (rear), obtain with reference to outward appearance described in figure 5.Under reverberation, only can see coppery recording layer 32 from rear, when under transmitted light, beholder sees the horizontal reverse whole numeric string " 10 " under the dark background of opaque recording layer 32.

Except cover layer 28, white space 62 also can be arranged in recording layer 32, as described in reference to figure 9 and 10, Fig. 9 and 10 schematically illustrated according to the cross section of Security element 60 of the present invention and the visual appearance in the time watching from front and rear under reverberation and transmitted light.

In Security element 60, except the described micropore 36 that effect by laser emission produces, recording layer 32 has white space 62, and the size of white space is greater than the size of microlens 26, and white space not with directly relative gap 30 registrations.For example, the metallization removal that can be before laser light strikes washes away technique via utilization is produced described white space 62, to produce micropore 36.In example shown embodiment, gap area 62 occupies the Lower Half of Security element 60, as shown in Figure 10 (a).By contrast, at the first half 64 of Security element 60, recording layer 32 exists.In principle, white space 62 can arbitrary graphic, the form development of character or coding.

Produce white space 62 in recording layer 32 after, as mentioned above, clash into Security element 60 to produce gap 30 in cover layer 28 and produce micropore 36 in recording layer 32 simultaneously and to be accurately registered in laser emission.In white space 62, do not produce extra micropore 36.

The subregion 74 being positioned on recording layer 32 in gap 30 forms the first pattern now, and its first half by numeric string " 10 " provides.The subregion 72 being positioned on gap area 62 in gap 30 forms the second pattern, and its current Lower Half by numeric string " 10 " forms (Figure 10 (a)).

Figure 10 illustrates the visual appearance of the Security element 60 of production like this.When watch front under reverberation time (Figure 10 (a)), in 30 outsides, gap, the glittering aluminium cover layer 28 of silver color is determined described outward appearance.In the Part I region 74 in gap 30, remove cover layer 28, beholder sees the coppery of recording layer 32 there.In the Part II region 72 in gap 30, remove cover layer 28 and recording layer 32, beholder sees the background being positioned at below Security element 60 there.

When watch front under transmitted light time (Figure 10 (b)), due to the micropore 36 comprising, the Part I region 74 in gap 30 looks it is to depend on view direction and translucent, as mentioned above.The Part II region 72 in gap 30 looks it is transparent, because there is not any recording layer 32 there.

When watch rear under reverberation time (Figure 10 (c)), at the first half 64, only coppery recording layer 32 is visible, and beholder sees the silver color cover layer 28 in white space 62 and is arranged in the background of Security element 60 belows of the subregion 72 in gap 30.

When watch rear under transmitted light time (Figure 10 (d)), due to the multiple micropores 36 in recording layer 32, it is translucent that Security element 60 looks in the first half 64 of the subregion 74 in gap in polarizers of big angle scope.The Part II region 72 in gap 30 looks it is transparent, because there is not any recording layer 32 there.

Except the coppery recording layer 32 in Figure 10, be recording layer 82 if select silver color aluminium lamination, cover layer 28 and recording layer 82 are suitable nearly in color.In the time watching from front under reverberation, the Part I region 74 in gap 30 (wherein recording layer 82 is visible) cannot distinguish with cover layer 28 around, as shown in Figure 11 (a).Beholder only perceives the Lower Half of complete pattern thus.Under transmitted light, first pattern in Part I region 74 is supplied by second pattern in Part II region 72, to form whole numeric string " 10 ", as shown in Figure 11 (b).

In the time watching from rear, the recording layer 82 and the cover layer 28 that are positioned at 72 outsides, subregion in gap 30 look to have identical color under reverberation, as shown in Figure 11 (c) in addition.Beholder also only perceives the Lower Half of complete pattern thus from rear.Under transmitted light, first pattern in Part I region 74 is supplied by second pattern in Part II region 72, to form whole number string " 10 ", as shown in Figure 11 (d).

Described effect can combine with micro-optics display unit, and especially More's amplifying device, More's type micro-optics amplifying device or modulus amplifying device, as shown in the exemplary embodiment of Figure 12.

For this reason, except described micropore 36, the recording layer 92 of Security element 90 comprises the latticed layout of micro-pattern elements 94.Similar with the layout of microlens 26, the layout of micro-pattern elements 94 forms the dot matrix that has preselected symmetry, expects More's enlarge-effect and characteristic kinematic effect, and described dot matrix is produced by the cooperation of the dot matrix of microlens dot matrix and micro-pattern elements 94.At this, the in the situation that of More's amplifying device, the Bravias lattice of the some array element of micro-pattern elements 94 is slightly different with the Bravias lattice of microlens 26 aspect the size of its orientation and/or its lattice parameter, if micro-pattern elements 94 in Figure 12 is about as shown in the skew of microlens 26.In the time of viewing graphic pattern image, More's enlarged image of micro-pattern elements 94 generates according to the type of described skew and size.This Security element with micro-optics demonstration layout is also convenient to impressive movement effects, as in detail illustrated in above-mentioned document.For example, the lattice parameter of the layout of the lattice parameter of the layout of imaging region and microlens grid can cooperate each other, make in the time of inclination Security element 90, obtain orthogonal parallactic movement effect (orthoparallactic motion effect), wherein, shown in pattern perpendicular to instead of be parallel to incline direction and move, as desired intuitively in people.

Within the scope of the invention, described Moire effect is only visible in the region of the white space 52 of gap 30 or cover layer 28.If select the same material of same color for cover layer 28 and recording layer 92,, under reverberation, Moire effect is only almost visible in region 30,52.

In current described embodiment, in order to illustrate, laser-sensitive cover layer and laser-sensitive recording layer form by opaque metal level.But for example, cover layer and recording layer also can be formed by the thin-film component with gamut effect, as explained above.

Cover layer and/or recording layer also can develop into translucent, at this, especially have the transmissivity between 20% and 90%.If cover layer 28 is translucent, for example also can see the Moire effect in Figure 12 with the brightness reducing in 30 outsides, gap.If cover layer 28 and recording layer 32 are all translucent, Security element also has certain residual transmission rate in gap and white space outside.This is favourable, especially in the time that Security element is arranged on opening 14 or on the window area of value document (as Fig. 1).So, the shape of opening 14 and profile are appreciable under transmitted light.

In other embodiments, cover layer 28 also can be formed by laser-sensitive clear coat 100, as shown in figure 13.For example, coating 100 can be IR enamelled coating, and it is mainly transparent in visible spectrum scope, but strongly absorbs the infrared laser radiation for clashing into, such as Nd:YVO ₄1.064 μ m radiation of laser.

The optics validity of micro-transmission 26 also can reduce by this clear coat, makes the radius of curvature Change Example of lens as 50% or more.Especially, hyaline layer can make lens equalization, and fully phases out optical effect.At this, the refractive index of clear coat 100 is the refractive index magnitude in microlens 26 suitably.

Between laser-sensitive coating 100 and the height of microlens 26, alternatively, another thin layer 102 can be set.For example, this can be the coating removing that promotes laser-sensitive coating 100.This another thin layer 102 can also be reflecting layer, and for example aluminium lamination makes at metallization removal region exterior, and microlens 26 serves as recessed micro-reflector.So, current described effect can be combined with the effect that the amplification that is positioned at both sides is arranged, as described in document WO 2010/136339A2 in detail.The disclosure of WO 2010/136339 A2 is incorporated to the application as a reference.

With reference to the diagram of Figure 14, except circular micropore, also can under laser light strikes, generate the micropore 110 that figure is shaped.For this reason, in the time of laser light strikes, the intended shape of the micropore 110 that laser emission 40,40 ' incidence angle are shaped according to figure changes.For example, in the time clashing into, by oblique laser radiation 40 simply, 40 ' on a direction in space, in recording layer 32, can generate metallization removal line 110.At this, the shape in gap 30 can not change.

Via the incidence angle that changes laser emission 40 on two direction in spaces, also can generate the micropore of X-Y scheme 112 forms, as shown in the top view of the recording layer 32 in Figure 15 (a).At this, the shape in gap 30 can not change, because in the position of cover layer 28, only incidence angle changes, and can not in the position of laser beam 40.

Except micropore, also can in recording layer 32, generate other micro-mark 114, as shown in Figure 15 (b).The effect of the laser emission that for example, the color of recording layer 32 can reason microlens 26 be assembled and changing.So, by change the incidence angle of laser emission 40 on two direction in spaces, there is micro-mark 114 of the second color in the interior generation of recording layer 32 with the first color.Therefore,, for laser-sensitive recording layer 32, except above mentioned metal level, also can consider that visual appearance allows other laser sensitive material changing by the effect of laser emission.

In all designs of mentioning, gap 30 and multiple micro-mark can comprise the personalization of Security element, such as the sequence number of banknote 10.The personalization of this registration is difficult to reproduce by other method, and therefore has high anti-counterfeiting.

The personalization of Security element can especially with reference to the tilted image described in figure 6 be combined.For example, can form non-personalized pictorial pattern at micro-mark that vertically angle is introduced.Is the micro-mark that forms personalized (such as the possessory signature of identity card or sequence number) in angle of inclination introducing recording layer.In the time of inclination Security element, the visible description of pictorial pattern is changed to favouring when personalization is watched when watching perpendicular to personalization.

The cross section of schematically illustrated another exemplary embodiment of the present invention of Figure 16, Figure 17 illustrates its visual appearance under reverberation and transmitted light.In Security element 120, except described gap 30, cover layer 28 has applicable white space 122,124, and they generate by acting in cover layer 28 or recording layer 32 of laser emission.In order to produce white space 122,124, laser energy is increased to not only ablation cover layer 28, and the complete recording layer 32 under ablation microlens 26.By contrast, gap 30 and micropore 36 generate with lower laser energy, and after ablation cover layer 28, residual amount of energy only causes generating little micropore 26 in recording layer 32.

Owing to can be almost increasing laser energy and again reducing laser energy not free the delay in the situation that, so can be seamless and be connected to each other with accuracy registration in white space 122 and gap 30.In example shown embodiment, gap 30 forms the first pattern being provided by a part for numeric string " 50 ", and it is indicated by dotted outline in Figure 17 (a).White space 122 forms the second pattern being provided by the remainder of numeric string " 50 ".

Figure 17 illustrates in the time watching from the first first type surface 22 1 sides, the visual appearance of the Security element 120 of so producing.In order to ensure matching color, at this, cover layer 28 and recording layer 32 are made up of same material, for example aluminium.With reference to Figure 17 (a), under reverberation, only the second pattern of white space 122,124 is appreciable for beholder, is shown as penetrating because be positioned at the background of Security element 120 belows there.By contrast, in the gap 30 in cover layer 28, beholder sees the recording layer 32 with matching color, makes owing to lacking contrast and tiny due to micropore 36, and gap 30 can not manifest under reverberation.Incomplete pattern diagram promotes beholder to watch under transmitted light thus, with can the whole pattern of perception.

In the time watching under transmitted light, first pattern in gap 30 looks it is to depend on view direction and translucent, as shown in Figure 17 (b), as repeatedly explanation above.The first and second patterns are complimentary to one another thus, to form the bright complete pattern of numeric string " 50 " form under uniform dark background.In the time watching from Security element 120 rears, obtain identical complete pattern, but be horizontal reverse complete pattern.

Figure 18 illustrates the Security element 130 of another exemplary embodiment according to the present invention, is furnished with the aluminium reflecting layer 132 that does not comprise micropore on copper recording layer 32.At this, the micropore 134 in recording layer 32 is less times greater than the illustrated micropore of above-mentioned exemplary embodiment, and under 30 μ m diameters of microlens, has the diameter of 5-15 μ m.In the time watching under reverberation, Security element 130 demonstrates tilted image.The visual angle being introduced into from micropore 134, beholder understands thoroughly micropore 134 at 132 places, silver color reflecting layer, and under the coppery background of recording layer 32, sees the silver color pattern being formed by micropore 134 thus.If beholder is to another visual angle inclination Security element 130, only coppery recording layer 32 is visible, and pattern disappears.Layer 132 can also be the printed layers that is for example applied to lower laminar substrate (such as bank-note paper).

Reference numerals list

10 banknotes

12 Security elements

14 openings

16 subregions

20 support members

22,24 first type surfaces

26 microlenses

28 cover layers

30,30 ' gap

32 recording layers

More than 34 micropore

36,36 ' micropore

40,40 ' laser emission

42 laser emissions that focus on

44 vertical directions

50 Security elements

52 white spaces

More than 54 micropore

56 micropores

60 Security elements

62 white spaces

The first half of 64 Security elements

72,74 subregions

82 recording layers

90 Security elements

92 recording layers

94 micro-pattern elements

100 clear coats

102 thin layers

110, the micropore that 112,114 figures are shaped

120 Security elements

122,124 white spaces

130 Security elements

132 reflecting layer

134 micropores

Claims

1. the optically variable security element for cheque paper, value document and other data medium, comprise the substantially transparent with the first and second relative first type surfaces support member, be arranged in the microlens device on the first first type surface of described support member and be arranged in the laser-sensitive recording layer on the second first type surface of described support member, it is characterized in that

-microlens device has laser-sensitive cover layer, and described laser-sensitive cover layer has at least one gap, and described at least one gap produces by laser emission effect and extends in the scope of multiple microlenses;

-described laser-sensitive recording layer has the multiple micro-mark producing by laser emission effect, and each micro-mark is associated with microlens, and in the time watching described Security element, described micro-mark is visible via the microlens being associated; And

-described multiple micro-marks are arranged on described support member with the accuracy registration direct relative with described at least one gap.

2. Security element as claimed in claim 1, is characterized in that, described micro-mark is formed by the micropore in described recording layer, and the micropore being especially shaped by circular micropore or figure forms.

3. Security element as claimed in claim 1 or 2, is characterized in that, the microlens being associated described in described micro-mark is all less than.

4. the Security element as described in claims 1 to 3 any one, is characterized in that, the Area Ratio of micro-mark and the microlens that is associated is lower than 1.0 or lower than 0.5 or even lower than 0.2.

5. the Security element as described in claim 1 to 4 any one, is characterized in that, described Security element is translucent in the region of described gap and relative micro-mark.

6. the Security element as described in claim 1 to 5 any one, it is characterized in that, described micro-mark utilizes laser emission to introduce described recording layer via described microlens device from least two different directions, and in the time that the each direction from described at least two different view directions is watched, described micro-mark is appreciable.

7. the Security element as described in claim 1 to 6 any one, it is characterized in that, the direction that described micro-mark utilizes laser emission to introduce in described recording layer via described microlens device changes continuously in the size range in described gap, make in the time watching under transmitted light, transparency is along with view direction continuously changes.

8. the Security element as described in claim 1 to 7 any one, it is characterized in that, except the gap producing by laser emission effect, described cover layer has white space, and described white space extends not and directly relative micro-mark registration in the scope of multiple microlenses.

9. Security element as claimed in claim 8, is characterized in that,

-described gap forms the first pattern of figure, character or coding form;

-in described tectal white space, other the micro-mark producing by laser emission effect is present in described recording layer, and form the second pattern of figure, character or coding form; And

-in the time watching under reverberation, only the first pattern is appreciable, and in the time watching under transmitted light, the first and second patterns are all appreciable, and two patterns are complimentary to one another to form complete pattern.

10. the Security element as described in claim 1 to 9 any one, it is characterized in that, except the micro-mark producing by laser emission effect, described recording layer has white space, the size of described white space be greater than the size of described microlens and not with directly relative gap registration.

11. Security elements as claimed in claim 10, is characterized in that,

First pattern that is positioned at those subregions formation figure, character or coding forms on described recording layer in-described gap;

Those subregions on the white space that is positioned at described recording layer in-described gap form the second pattern of figure, character or coding form; And

-in the time watching under transmitted light, the first and second patterns are all appreciable, two patterns are complimentary to one another to form complete pattern.

12. Security elements as claimed in claim 8, is characterized in that, directly relative with described tectal white space, and the white space of congruence is present in described recording layer.

13. Security elements as claimed in claim 12, is characterized in that,

-described gap forms the first pattern of figure, character or coding form;

-described tectal white space forms the second pattern of figure, character or coding form; And

-in the time watching under reverberation, only the second pattern is appreciable, and in the time watching under transmitted light, the first and second patterns are all appreciable, and two patterns are complimentary to one another to form complete pattern.

14. Security elements as described in claim 1 to 13 any one, is characterized in that, described Security element comprises micro-optics display unit, especially More's amplifying device, More's type micro-optics amplifying device or modulus amplifying device.

15. Security elements as described in claim 1 to 14 any one, it is characterized in that, described recording layer comprises the pattern image that is divided into multiple unit, in each unit, be furnished with the imaging region of predetermined the 3rd pattern, when microlens device is formed on viewing graphic pattern image, basis is arranged in the microlens grid of imaging region reconstruction the 3rd pattern in unit.

16. Security elements as described in claim 1 to 15 any one, is characterized in that, described recording layer and/or described cover layer are opaque, are especially, described recording layer and described cover layer are formed by opaque metal level or comprise opaque metal level.

17. Security elements as described in claim 1 to 16 any one, is characterized in that, described recording layer and/or described cover layer are translucent, all preferably have the transmissivity between 20% and 90%.

18. Security elements as described in claim 1 to 17 any one, is characterized in that, described cover layer and/or described recording layer are formed by the thin-film component with gamut effect.

19. Security elements as described in claim 1 to 18 any one, is characterized in that, described cover layer and/or described recording layer are formed by laser-sensitive ink layer.

20. Security elements as described in claim 1 to 19 any one, is characterized in that, described cover layer and described recording layer mate in color, are especially, described cover layer and described recording layer are made up of same material, are especially made up of same metal.

21. Security elements as described in claim 1 to 15 any one, is characterized in that, described cover layer is to make the radius of curvature of described microlens change at least 50% hyaline layer, especially makes the hyaline layer of microlens equalization.

22. Security elements as claimed in claim 21, is characterized in that, the refractive index of transparent covering layer and the refractive index of described microlens differ 0.3 or less.

23. Security elements as described in claim 1 to 22 any one, is characterized in that, described micro-mark is formed by the micropore in described recording layer, and reflecting layer or printed layers are arranged on described recording layer.

24. Security elements as claimed in claim 23, is characterized in that, described reflecting layer or described printed layers do not have micropore.

25. 1 kinds have according to the data medium of Security element of at least one in claim 1 to 24.

26. data mediums as claimed in claim 25, is characterized in that, described Security element is arranged in the window area of described data medium or through hole or on the window area or through hole of described data medium.

27. data mediums as claimed in claim 25, it is characterized in that, described data medium comprises data medium substrate, described data medium substrate has the marked region producing by laser emission effect, described marked region is in abutting connection with being created at least one gap in Security element by laser emission, and with described gap registration.

28. data mediums as claimed in claim 27, is characterized in that, in described marked region, remove color component or metallics by laser emission effect from data medium substrate, or make data medium substrate foamed.

29. 1 kinds of manufactures are used for the method for the optically variable security element of cheque paper, value document and other data medium, wherein,

-support member of the substantially transparent with the first and second relative first type surfaces is provided, by microlens Plant arrangement on the first first type surface of described support member;

-laser-sensitive recording layer is arranged on the second first type surface of described support member;

-laser-sensitive cover layer is provided to described microlens device;

-in described laser-sensitive cover layer, be created at least one gap of extending within the scope of multiple microlenses by laser emission effect;

-in described laser-sensitive recording layer, producing multiple micro-marks by laser emission effect, each micro-mark is associated with microlens, and in the time watching described Security element, described micro-mark is visible via the microlens being associated; And

30. methods as claimed in claim 29, is characterized in that, produce gap and in described laser-sensitive recording layer, produce relative micro-mark by same laser bundle in same operation in described laser-sensitive cover layer.

31. methods as described in claim 29 or 30, is characterized in that, produce described micro-mark from least two different directions via described microlens device described recording layer.

32. 1 kinds of manufactures are according to the method for the data medium of one of claim 27 or 28, wherein,

-data medium substrate is provided;

-laser-sensitive cover layer is provided to described microlens device;

-will there is described laser-sensitive recording layer, described microlens device and the tectal support member of described laser-sensitive to be applied to described data medium substrate; And

-in same operation by same laser bundle by laser emission effect,

A) in described laser-sensitive cover layer, produce at least one gap of extending within the scope of multiple microlenses;

B) in described laser-sensitive recording layer, produce multiple micro-marks, each micro-mark is associated with microlens, and in the time watching Security element, described micro-mark is visible via the microlens being associated, and described multiple micro-marks are arranged on described support member with the accuracy registration direct relative with described at least one gap; And

33. methods as claimed in claim 32, is characterized in that, in described marked region, remove color component or metallics by laser emission effect from described data medium substrate, or make described data medium substrate foamed.