CN1854944B - Patterned structures with optically variable effects - Google Patents
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- CN1854944B CN1854944B CN2006100767837A CN200610076783A CN1854944B CN 1854944 B CN1854944 B CN 1854944B CN 2006100767837 A CN2006100767837 A CN 2006100767837A CN 200610076783 A CN200610076783 A CN 200610076783A CN 1854944 B CN1854944 B CN 1854944B
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Abstract
An optical structure is disclosed which includes a light transmissive substrate having a surface relief pattern applied thereon, such as a hologram. One or more layers are patterned corresponding to materials playing the role of absorbers or reflectors on a Fabry-Perot type of optical structure. These materials are applied over portions of the surface relief pattern so as to form alphanumeric characters, bars codes, or pictorial or graphical designs. Additional layers may be applied to the patterned layer of the reflective or absorber materials and exposed portions of the surface relief pattern in order to provide desirable optical effects to the exposed portions of the surface relief pattern. In some embodiments, the optically active coating is a color shifting thin film, or contains color shifting flakes based on Fabry Perot interference filter designs. Optionally, the material of the optically active coating is either index matched or not index matched to the light transmissive substrate in order to optically erase or enhance the effect of the surface relief pattern in the portions of the surface relief pattern not covered by the reflective or absorber materials.
Description
Technical field
The present invention relates generally to the surface relief pattern structure.More specifically, the present invention relates to and the relevant pattern of pattern structure on it described pattern such as hologram or diffraction grating.
Background technology
The hologram of diffraction pattern and embossment and association area is aesthstic and practical visual effect owing to it, and has practical application widely.Usually, diffraction grating comes down to the repetitive structure that is made of line in the material or groove, to form peak and groove structure.When every millimeter the one-tenth hundred of diffraction grating on reflecting surface has the groove that separates each other in the scope of thousands of line, can in visible spectrum, produce required optical effect.A kind of decorative effect is the irised visual effect that produces by diffraction grating.
The diffraction grating technology has been applied to and has produced in the formation of two-dimension holographic pattern of 3-D view phantom to the observer.And, utilize the square crossing laser beam that comprises a reference beam and an object beam, three-dimensional hologram is developed based on the difference of refractive index in the polymkeric substance.This hologram is called volume hologram or 3D hologram.In addition, on multiple object, use hologram image to obtain using widely to stop the technology of forging.
At present have some application for the relief surface that hologram pattern is arranged, its scope is from decorating packing as being packaged to security credence such as banknote and credit card with what ribbon was done.The two-dimensional hologram general using has been formed at the diffraction pattern on the frosting.In some cases, need not further to handle just to see that embossment is in this lip-deep hologram image; Yet, in order to realize maximum optical effect, must the reflection horizon be set on relief surface usually, be generally thin metal level such as aluminium lamination.The reflection horizon has increased the visibility of diffraction pattern embossment in fact.
Even be encapsulated in the rigid plastic, comprise that every type of first order diffraction structure of conventional hologram and raster image also has bigger shortcoming.
When using diffused light source illumination hologram image, the order of diffraction enlarges and is overlapping, to such an extent as to the diffraction color is lost, and the less visual information that is included in the hologram is shown.The general silver color reflection of only seeing from relief surface, and all this patterns look and mostly are silver color or light appearance most under this observation condition.Thereby hologram image needs direct unidirectional illumination being seen usually.This means that the illumination direction of light must be in the plane identical with direction of observation in order to obtain best observations.Although in fact, can obtain many pointolites by room lighting, so that hologram is seen easily.
Because secure hologram has obtained using widely, lure that therefore the adulterator removes to reproduce the hologram that uses in the credit card of being everlasting, banknote etc.Thereby secure hologram must overcome the difficulty that this hologram is forged easily, to realize real safety.One step and two step optical reproduction, direct mechanical is duplicated and even create again and obtained discussion widely on the internet.Multiple resistance mode is developed, but does not find that a kind of countermeasure is effective means of prevention when using separately.
Further problem about secure hologram is: for most people, discern and remember by being used to verify that each image that these holograms of purpose produce is difficult.The ability of common people's authenticating security hologram is damaged by obscuring of the complicacy of its feature and decoration diffraction packing at last.Thereby, the authenticity that most of people tend to confirm the existence of this security pattern rather than identify image.This use to the substitute of the common hologram of imitation inferior or real secure hologram provides chance.
Obstruct in adulterator's the effort at other, hologram industry has taked more complex image as produce a plurality of images when security pattern rotates.These improved images provide high-caliber " flash of light " or aesthstic attractive force to the observer.Unfortunately, even because this complicated imaging is difficult to present and people but may to remember to recall this imaging also be very difficult, so the complicacy of this increase does not have the security of increase.
In the further effort that security pattern is provided, United States Patent (USP) 6,903,850 attempt providing a kind of security pattern that surface relief becomes substrate thereon that has, described surface relief limits the optically variable effects generating structure, described structure has at least two kinds and different is arranged on suprabasil reflection enhancement material, thereby described optically variable effects can be observed against the background that is limited by the reflection enhancement material.However, optically variable effects only is the diffracting effect that is provided by surface relief structure, and the contrast between the diffraction region of two kinds of different colours does not provide the optical effect of highly significant.
What submit to the name of Phillips etc. is for significant improvement of above-mentioned United States Patent (USP) in laid-open U.S. Patents application 20050063067 on March 24 in 2005.Phillips etc. disclose two kinds of optical textures, and the substrate that wherein has the surface relief hologram utilizes reflectance coating to apply in selection area.Reflectance coating utilizes one or more layers discoloration coating to apply then.When people see this structure from observing side, be coated with discoloration coating significantly adjacent to the zone of reflector space, it perhaps replacedly has the individual layer color shifting ink with the form of the layer that comprises Fabry Perot (Fabry-Perot) light filter.Although these two kinds of structures have significant advantage with respect to prior art, all be subjected to different restrictions.For example, above-mentioned embodiment with the Fabry Perot light filter that is coated in embossment reflection coating hologram top provides high relatively colourity in color change interval, and provide high reflectivity and diffraction in the reflection coating zone, yet four layers of needs or more multi-layered deposition realize this result.As selection, the reflector space that is coated in the hologram top is provided, utilize color shifting ink to apply the non-coating zone of reflectance coating and substrate subsequently, this utilizes lower colourity and the color changeable effect of only two-layer realization, has strong relatively diffracting effect simultaneously.Yet, wish to utilize three layers deposition only to realize the strong color changeable effect of E.B.B., have strong relatively diffracting effect simultaneously, or have required more weak diffracting effect.
In addition, advantageously make Fabry-pool sieve (FP) light filter by sedimentary deposit, and make adjacent to the there the zone lack in the Fabry Perot light filter the layer, thereby, can be only by from least one FP light filter layer, getting rid of or removing some materials and make non-FP light filter adjacent to the FP light filter.
Term " non-FP light filter " means it is a kind of optical filter with multi-layer configuration at this, wherein these layers do not form absorption layer, dielectric layer and reflection horizon membrane stack, described membrane stack forms Fabry-pool sieve light filter, more specifically, described light filter has or shares reflection horizon, dielectric layer or absorption layer with adjacent FP light filter, yet the one deck at least that is present in the adjacent FP light filter does not exist in non-FP light filter.
Present patent application provides a plurality of embodiment, its preferred embodiment needs three layers to realize the Fabry Perot structure, and wherein when people observe described Fabry Perot structure, adjacent area has the thin layer of one deck at least, so that required strong or weak diffracting effect to be provided.Certainly, also can provide other effects in conjunction with effect, yet the invention provides a kind of structure, wherein Fabry Perot light filter and non-Fabry-pool sieve light filter are adjacent one another are, so that the visible features of contrast is provided, and wherein non-Fabry-pool sieve light filter has less layer than its adjacent Fabry Perot light filter.Easily, the layer of Fabry Perot structure is shared with the layer of non-Fabry-pool sieve light filter, yet these two light filters visually are diacritic, and different optical effects is provided.
Therefore, develop the improved observation quality that enhancing can be provided under multiple lighting condition, and can in multiple Secure Application, make forgery more the difficulty safety product will be very favorable.
Summary of the invention
But the invention provides a kind of optical texture of display surface relief pattern effect, described surface relief pattern such as hologram or diffraction grating, with pattern as alphanumeric character, bar code or figure or shown design, and at the additional optical effect in the zone of these patterns.This optical texture is very useful as security pattern.
More specifically, optical texture according to the present invention comprises the transmittance substrate, and it has the surface relief pattern that applies thereon, so that hologram or other surface structures based on embossment to be provided.In a preferred embodiment, the patterning Fabry Perot structure applications that will have color changeable effect is to the part surface embossing pattern, so that form pattern or structure, as alphanumeric character, bar code or diagram or pictorial pattern.Patterned layer provides color change interval, and other wherein adjacent with described color change interval zones lack one or more layers, thereby forms pattern.
According to the present invention, a kind of optical texture is provided, comprising:
Have the substrate of first surface, described first surface has embossment structure at least in presumptive area;
Fabry Perot type that replaces side by side and non-Fabry-pool sieve type filter array, described filter array has the ground floor that is deposited on the described first surface, it is described that alternately light filter is disposed adjacent one another, wherein said Fabry Perot type light filter has the absorption layer of comprising, the three-decker in dielectric layer and reflection horizon, and wherein said non-Fabry-pool sieve light filter lacks the described three layers one deck at least that is present in the described Fabry Perot light filter, in the wherein said three layers cladding process of one deck at least cloth-and pool sieve type light filter and non-Fabry-pool sieve type light filter.
According to the present invention, a kind of security pattern is provided, comprising:
Be formed with the substrate of surface relief, described surface relief limits the generating structure of optically variable effects; And three layers of discoloration coating, wherein with respect to described surface relief, one deck at least of described layer is discontinuous on the same side of substrate, every layer in three layers all has the surface relief profile, wherein along with the change at visual angle can be seen diffraction and color changeable effect, and wherein can see at least two different zones.
These and other features of the present invention will become more apparent by following description and claims, maybe can understand by enforcement of the present invention as mentioned below.
Description of drawings
In order further to illustrate above-mentioned and other advantages and feature of the present invention, more specific description of the present invention will be described with reference to the specific embodiment by appended annexed drawings set forth.Should be appreciated that these accompanying drawings have only described exemplary embodiments of the present invention, therefore should not be considered to be used for limiting its scope.The present invention will utilize bells and whistles and details to be described and to explain by appended accompanying drawing, in the accompanying drawings:
Fig. 1 is the schematic depiction of optical texture according to an embodiment of the invention, wherein can see film and diffraction interference effect the zone of this structure when from top view, and can see weak diffraction interference effect when observing adjacent area.
Fig. 2 is the schematic depiction of optical texture according to another embodiment of the present invention, wherein can see the film interference and the diffraction interference effect of combination from top left side, and wherein can see the diffraction interference effect from top right side.
Fig. 3 is the schematic depiction of optical texture, wherein can see the film and the diffraction interference effect of combination when top right side is observed, and wherein can see film interference and weak diffraction interference effect when the top left side of this pattern is observed.
Fig. 4 is the schematic depiction of optical texture, wherein when observing, top right side can see the film and the diffraction interference effect of combination, and wherein when the top left side of this pattern is observed, cannot see interference effect, this is because the dielectric layer that uses is the refractive index that low-index material and its refractive index approach embossment resin and bonding coat.
Fig. 5 is the schematic depiction of optical texture, wherein when observing, top right side can see the film and the diffraction interference effect of combination, and wherein when the top left side of this pattern is observed, can see weak diffraction interference effect, this is because high-index material is used as dielectric layer.
Fig. 6 is the synoptic diagram of optical design, and wherein the top left side from this pattern can be observed the film interference effect, and wherein can be observed the diffraction interference effect from the top right side of this pattern.
Fig. 7 is the synoptic diagram of the embodiment of the invention, wherein can see the film interference and the diffraction interference effect of combination from the top right side surface, and wherein can see the diffraction interference effect from the top left side surface.
Fig. 8 is a synoptic diagram of describing optical texture, and wherein the film of combination and diffraction interference effect are significantly when observing from the right side on top, and wherein when the left side on top is observed owing to absorption layer exists film interference and weak diffraction interference effect.
Fig. 9 has shown embodiments of the invention, wherein the film of combination and diffraction interference effect are significantly when observing from the right side on top, and wherein when the left side on top is observed the dielectric layer owing to high index of refraction have film interference and weak diffraction interference effect.
Embodiment
The present invention relates to a kind of optical texture, the surface relief pattern that provides as the optical effect of hologram and diffraction grating is provided described optical texture; Patterning reflection configuration below surface relief pattern; And the optically-active coating, described optically-active coating be positioned at patterned layer and be not patterned those surface relief pattern parts that layer covers below.Last resulting optical texture shows unique optical effect.
Accompanying drawing with the signal formal specification many aspects of the present invention, wherein same structure is represented with same Reference numeral.
Fig. 1 has described optical texture 20, and it comprises light-transmitting layer 22, has surface relief pattern 24 on surface or the lower surface within it.
By using term " patterning " layer, mean that patterned layer is applied in from the teeth outwards, the mode of described patterned layer required to form " pattern " or design is deposited on the described surface.By limiting examples, pattern reflecting layer 29 can form with the shape of letter, numeral, bar code and/or diagram or graphic designs.
Light-transmitting layer 22 preferably is made of the material that can directly accept embossment structure in its surface.Suitable material as layer 22 comprises plastic material such as Polyvinylchloride, polycarbonate, polyacrylate and PETG (PET type G).
Surface relief pattern 24 can be taked various ways, comprise diffraction grating, hologram pattern such as two and three dimensions hologram image, corner cube reverberator, Zero-order diffractive pattern, moire pattern or other light interference pattern, it comprises based on size at the pattern of about 0.1 μ m to the microstructure of the preferably about 0.1 μ m of about 10 μ m to the scope of about 1 μ m, and comprises above-mentioned multiple combination as holography/raster image or other interference figures.For example, Kinegram
Pattern has two dimension, computer-generated image (can buy from the OVD Kinegram company of Switzerland), and wherein single pixel is full of the optical diffraction microstructure.These microstructures are to have typical sizes approximately less than the very fine surface modulation structure of 1 μ m.Except conventional hologram, the present invention is applicable to any embossment structure that can be come out by embossment in resin bed.This comprises Difraction surface, " moth eye " type structure, has the hologram at a plurality of visual angles, wherein each visual angle has different holographic characteristic or image, perhaps can comprise the high resolving power embossment from the nickel mother matrix, wherein, original version produces by the high-resolution laser etching.
The method that forms surface relief pattern 24 is known to those skilled in the art.For example, embossment can be carried out by known method in the surface of layer 22, as at high temperature by pressure this layer being contacted with the nickel embossment version of heating.Additive method comprises photoetching process and plastic-substrates is carried out molding with patterned surface.
In one approach, optical texture 20 can be used the thermoplastic film manufacturing, and this film carries out embossment with this film by the embossment roller then by the surface of thermal softening film, and described embossment roller is delivered to diffraction grating or hologram image on this softening surface.Like this, can form the sheet that has diffraction grating or hologram image thereon of effective indefinite length.As selection, can pass one group of transparent roller of UV by the plastic foil roller that will be coated with ultraviolet (UV) cure polymer such as PMMA and obtain optical texture 20, thereby in the UV cure polymer, polymkeric substance is by the UV photocuring by the transparent roller of UV then with pattern setting for these rollers.
In case light-transmitting layer is produced with relevant surface relief structure, and after layer 26 and 28 was deposited, reflecting material deposited so that form pattern reflecting layer 29 with required pattern.Although also can use other reflections or even partial reflection/part transmission material, at present the material in preferred pattern reflection horizon is a metal, as aluminium, silver, nickel, silver palladium alloy, yellow gold, copper, gold, or the like.Although should be appreciated that this layer can be the part transmission so that obtain required effect, preferably this layer is opaque basically, so that improve the optical characteristics of relevant surface relief pattern.In the reflection horizon is under the opaque basically situation, and the general thickness that forms of metal level is between about 50 to about 100nm.
At present preferably: utilize a kind of in two kinds of methods, pattern reflecting layer is applied in the required pattern/design.In one approach, use the photoetching technique of standard, wherein develop by ultra-violet curing in the photoresist layer of pattern on being formed at metal level, in aqueous slkali such as NaOH (NaOH) solution, handle then to remove photoresist layer by mask.In another approach, by utilize the intaglio printing pattern of nonwetting oil on relief surface, the pattern of metal level is embedded into (in-line) in devices of coiled vacuum coating machine, thereby, during deposition processes, generate patterned metal layer.When metal is deposited on the embossment coating surface, by the pattern generating pattern of oil evaporation.In those oily non-existent zones, metal will deposit and be attached to resin bed or substrate surface.Exist from the teeth outwards in those zones of oil, oil is owing to the heat of condensation of plated metal is evaporated, and embossment structure such as hologram do not have metal level on those zones, thereby produces non-metallic embossment structure.The third method relates to the printing of insoluble organic resin pattern, carries out chemical etching then to remove not by the part of insoluble organic pattern protection, then by removing the removal of solvents insoluble resin of insoluble resin.For example; if aluminium forms pattern by this method; the technician can print organic water-fast pattern, uses caustic solution to remove with the pattern etching that will do not protected by organic printed patterns in aluminium lamination then, with an organic solvent washes away the organic pattern that still exists then.
Although at present preferred these the three kinds methods that form pattern reflecting layer should be appreciated that understanding might find the replaceable method of the described pattern reflecting layer of formation those skilled in the art of this disclosed desired structure.
In Fig. 1, have Cr, MgF
2Form Fabry-pool sieve thin film interference filters with the zone of Al, when from this structure of top view, can see this light filter.In addition, utilize the optically-variable characteristic that provides by the FP light filter can see the diffracting effect of combination.When from upper left-hand observation image, only see weak diffracting effect, this is because light filter is not the FP light filter, does not have reflection horizon 29 in the contrast district of pattern.Easily, by three layers of FP light filter are provided in some zones, and the one deck in three layers is not existed, can see this two kinds of different optical effects.Cr and MgF in fact
2Layer is shared by FP and non-FP light filter; And the Al layer exists only in the FP light filter in the present embodiment.Lacking of one deck can provide diverse optical effect and contrast between two zones.
Fig. 2 has described the similar structure with Fig. 1, but shows the patterned layer 36 that is made of Cr below light-transmitting layer 22.At partially patterned Cr layer with to lack on the uncoated adjacent complementary portion of Cr be MgF completely
2 Layer 38 has applied Al layer 39 completely thereon.Thereby the inside surface 32 of light-transmitting layer has surface relief pattern 34 in the present embodiment, is formed with Cr on it.When observing this structure from top left side, can see the diffraction and the film interference effect of combination, this is owing to there is the Fabry Perot light filter under the substrate of left side.When observing this structure,, therefore only see the diffraction interference effect owing in this zone, there is not the Fabry Perot light filter from top right side.
The moldable heat-formable material of preferred at present use forms transmittance substrate 32, it for example comprises plastics such as polyester, polyethylene terephthalate (PET) is as PET type G, polycarbonate, acryl resin is as comprising the polyacrylate of polymethylmethacrylate (PMMA), Polyvinylchloride, polyvinylidene chloride, polystyrene, cellulose diacetate and primary cellulose acetate, with and composition thereof or multipolymer etc.In a preferred embodiment, transmittance substrate 32 is made of transparent material such as polycarbonate basically.The substrate 32 that is shaped has the suitable thickness of about 3 μ m to about 100 μ m, and preferred about 12 μ m are to the thickness of about 25 μ m.Although substrate 32 is described as being formed by individual layer, it can be formed by the multilayer base material.
With reference now to Fig. 3,, show a kind of optical texture, wherein embossment pet layer 126 has deposition Cr layer 122 and MgF thereon
2Secondly layer 123 is part A l layer 124, the fenestrate zone that is used to provide the windowless zone of depositing Al layer 124 and lacks Al along identical layer.At the Al layer is for 124 times the ink lay 127 that comprises the optically-variable diaphragm, and described ink lay 127 is by basalis 120 supportings.Although this substrate support layer is called substrate, can think also that in this manual PET embossed layer 126 is substrates.In operation, when when top left side is observed, this pattern provides the film of combination and weak diffraction interference effect, and when when top right side is observed, can provide the strong film and the diffraction interference effect of combination.
An alternative embodiment of the present invention is described in Fig. 4.In the present embodiment, when from top view, show independently impact effect in the right side and the left side of dotted line.On the right side, the observer will be noted that the film and the diffraction interference effect of combination.There is not any interference effect in the left side.Have the PET substrate 136 of embossment diffraction grating to utilize the multilayer optical coating to apply in a side, described coating by partially absorb/the part transmission layer constitutes, optical dielectric layer and reflection horizon, described partially absorbing/part transmission layer hereinafter is called " absorption " layer.Described three layers form Fabry-pool sieve structure.According to telling about of patent such as U.S. Pat 5,135,812, its full content is incorporated among the present invention by reference at this, these layers this means that with for optical texture adds the variable color feature color will change according to the visual angle.Discoloration coating in the present embodiment comprises portion C r layer 132.Another part Al layer 134 is deposited on the part layer 132, and its middle level 132 and 134 has the embossing pattern of the grating that forms therein.Being clipped in layer between 132 and 134 is complete MgF
2Layer 133, it applies Cr layer 132 and at the expose portion of the suprabasil surface relief pattern of PET.This structure is fixed to substrate 130 via bonding coat 138.
Fig. 5 is very similar to Fig. 4, yet replaces the MgF that uses as shown in Figure 4
2 Layer 133 coated substrate are used the high dielectric layer 142 that is made of ZnS.In this case, performance is similar aspect most of, yet in Fig. 5, the film color changeable effect weakens significantly, and when observing in the left side of this pattern from the top, can observe because the weak diffracting effect that the high index of refraction of dielectric material causes.
With reference now to Fig. 6,, show optically-variable variable color membrane stack and be deposited in the PET substrate, on the upper surface of this substrate, have de-metallization aluminium hologram.PET substrate 156 has the holographic surface relief pattern that is deposited in its upper surface.The protection coat of paint 159 is along the undulation of embossing pattern.The embossing pattern zone that part A l layer 154 covers in the PET substrate 156, and be sandwiched between layer 159 and the PET substrate 156.Optically-variable layer membrane stack 152 is arranged between PET substrate 156 and the substrate 150.
Fig. 7 is the structure that is similar to very much Fig. 6, partly covers the Al layer of PET substrate yet replace only to have, and complete Al layer 174 is provided and part layer 176 is provided.MgF
2Layer is crossed over total.In the present embodiment, diffraction and the film interference effect that can see combination from top right side, and can see the diffraction interference effect from top left side.
Fig. 8 shows the embodiment of the invention, when film interference and the diffraction interference effect that can see combination when this structure is observed on the right side, top, can see film interference and weak diffracting effect from the top left hand observation of this pattern.Described structure forms by substrate 180 is provided, and deposition optically variable ink layer 181 has thick pet layer or substrate 186 on it in this substrate, wherein has the grating that is formed on wherein at its top surface.Aluminium lamination 184 parts cover the PET grating and adopt the form of grating.MgF
2Layer 185 covers Al layers 184 and not by the PET grating of calorize.Cr layer 186 covers MgF
2Layer 185.The protection coat of paint 187 covers Cr layer 186.Replacedly, in other embodiments, can use the optically-variable paper tinsel to replace coat of colo(u)r 181.
Embodiment among Fig. 9 is very similar to Fig. 8, yet utilizes ZnS layer 195 to replace MgF
2Layer 185, and use portion C r layer 196 to replace Cr layer 186.It should be noted that, in above stated specification, part layer is described as the part deposition, but also can be " de-metallization " that utilizes original position mimeograph brush/ablation method, or utilizes the chemical etching of means of photolithography, or by the insoluble pattern of printing, then by chemical etching, selective solvent is etched with and removes insoluble pattern subsequently, thereby removes the deposition part, so that the generating unit layering produces fenestrate and windowless zone.
The present invention can specialize with other concrete forms, only otherwise depart from spirit of the present invention and essential characteristic.It is illustrative and nonrestrictive that described embodiment only is thought of as in all respects.Therefore, scope of the present invention is represented by claims rather than above stated specification.In the implication of claim and equivalent scope change and be included in their scope.
In a word, the invention provides the structure that only need in the transmittance substrate, deposit trilaminate material, in this substrate, have hologram or grating etc.Easily,, can see different optical effects, produce at least two diacritic zones thus by in presumptive area, omitting three layers one or more layers.The most remarkable visible effect is the film interference effect, and described film interference effect has or approaches diffracting effect.
Claims (16)
1. optical texture, it has first side and second side, and the side in wherein described at least first side and second side can be seen pattern for observing side from described observation side, and described optical texture comprises:
Have the substrate of first surface, in the predetermined zone of described first surface, have embossment structure at least;
Fabry Perot type side by side and non-Fabry-pool sieve type light filter, can see described light filter from described observation side, wherein said Fabry Perot type light filter is a variable color filter, be used to provide the visible color change that produces along with the change at incident angle of light or visual angle, and each described Fabry Perot type light filter has three layers in order, described three layers comprise absorption layer, dielectric layer and reflection horizon, and described non-Fabry-pool sieve light filter lacks one deck at least of described three the orderly layers that exist in described Fabry Perot light filter, wherein said Fabry Perot type and non-Fabry-pool sieve type light filter is deposited on the described first surface, and the visible optical effect of described Fabry Perot light filter and described non-Fabry-pool sieve light filter is obviously diacritic.
2. optical texture according to claim 1 is characterized in that, described Fabry Perot type and non-Fabry-pool sieve filter device side by side forms filter array.
3. optical texture according to claim 2 is characterized in that, described filter array forms visible repetition period pattern.
4. optical texture according to claim 1 is characterized in that, each described Fabry Perot type light filter all only constitutes by three layers.
5. optical texture according to claim 4 is characterized in that, the maximum number that is deposited on the optically-active layer on the described embossment structure is three.
6. optical texture according to claim 1 is characterized in that, there is not color changeable effect in described non-Fabry-pool sieve light filter.
7. optical texture according to claim 6 is characterized in that, described non-Fabry-pool sieve light filter shows visible diffracting effect.
8. optical texture according to claim 1 is characterized in that, described Fabry Perot light filter shows visible diffracting effect and color changeable effect.
9. optical texture according to claim 1 is characterized in that, when when described observation side is observed described light filter, can see variable color and diffracting effect alternately.
10. optical texture according to claim 1 is characterized in that described embossment structure runs through the surface of substrate.
11. optical texture according to claim 1 is characterized in that, described embossment structure exists only in the zone that exists with described Fabry Perot light filter, perhaps with the regional corresponding zone that replaces of described non-Fabry-pool sieve light filter existence in.
12. optical texture according to claim 1 is characterized in that, described absorption layer is Cr, and described dielectric layer and reflection horizon are respectively MgF
2And Al.
13. optical texture according to claim 1 is characterized in that, dielectric layer is to have 1.65 or the high-index material of bigger refractive index.
14. optical texture according to claim 6 is characterized in that, described absorption layer is Cr, and described dielectric and reflection horizon are respectively MgF
2And Al.
15. optical texture according to claim 1, it is characterized in that, described Fabry Perot type and non-Fabry-pool sieve type light filter side by side forms visible sign, mark or literal together, and it can be distinguished because of the difference of the optical characteristics of Fabry Perot and non-Fabry-pool sieve light filter.
16. optical texture according to claim 1 is characterized in that, described Fabry Perot type and non-Fabry-pool sieve type light filter side by side shared described three one decks at least in the layer in order.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US67308005P | 2005-04-20 | 2005-04-20 | |
| US60/673,080 | 2005-04-20 | ||
| US11/273,985 US7667895B2 (en) | 1999-07-08 | 2005-11-15 | Patterned structures with optically variable effects |
| US11/273,985 | 2005-11-15 |
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| CN1854944A CN1854944A (en) | 2006-11-01 |
| CN1854944B true CN1854944B (en) | 2011-02-09 |
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| WO2012159397A1 (en) * | 2011-05-25 | 2012-11-29 | 苏州大学 | Method for making color image and color filter manufactured with the method |
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| CN101391557B (en) | 2007-09-20 | 2011-10-12 | 中国印钞造币总公司 | Film with false proof function and anti-counterfeiting object containing film |
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| Publication number | Publication date |
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| CN1854944A (en) | 2006-11-01 |
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