CN101727778B - Optical anti-counterfeiting film used for certificates and application thereof - Google Patents
Optical anti-counterfeiting film used for certificates and application thereof Download PDFInfo
- Publication number
- CN101727778B CN101727778B CN2009102002015A CN200910200201A CN101727778B CN 101727778 B CN101727778 B CN 101727778B CN 2009102002015 A CN2009102002015 A CN 2009102002015A CN 200910200201 A CN200910200201 A CN 200910200201A CN 101727778 B CN101727778 B CN 101727778B
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- optical anti
- counterfeiting
- counterfeiting film
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- 230000003287 optical effect Effects 0.000 title claims abstract description 53
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 7
- 150000002736 metal compounds Chemical class 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 7
- 229920005644 polyethylene terephthalate glycol copolymer Polymers 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 4
- PLXMOAALOJOTIY-FPTXNFDTSA-N Aesculin Natural products OC[C@@H]1[C@@H](O)[C@H](O)[C@@H](O)[C@H](O)[C@H]1Oc2cc3C=CC(=O)Oc3cc2O PLXMOAALOJOTIY-FPTXNFDTSA-N 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims description 2
- 230000000007 visual effect Effects 0.000 abstract description 11
- 239000003086 colorant Substances 0.000 abstract description 3
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- 239000010408 film Substances 0.000 description 39
- 230000000694 effects Effects 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 7
- 238000000985 reflectance spectrum Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000007639 printing Methods 0.000 description 6
- 230000033458 reproduction Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 229920002120 photoresistant polymer Polymers 0.000 description 3
- 241000282414 Homo sapiens Species 0.000 description 2
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- FFRBMBIXVSCUFS-UHFFFAOYSA-N 2,4-dinitro-1-naphthol Chemical compound C1=CC=C2C(O)=C([N+]([O-])=O)C=C([N+]([O-])=O)C2=C1 FFRBMBIXVSCUFS-UHFFFAOYSA-N 0.000 description 1
- 238000003855 Adhesive Lamination Methods 0.000 description 1
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- 230000001070 adhesive effect Effects 0.000 description 1
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Images
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/04—Processes or apparatus for producing holograms
- G03H1/0476—Holographic printer
- G03H2001/0482—Interference based printer
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/04—Processes or apparatus for producing holograms
- G03H1/0493—Special holograms not otherwise provided for, e.g. conoscopic, referenceless holography
- G03H2001/0497—Dot matrix holograms
Abstract
The invention relates to a visual optical anti-counterfeiting film used for certificate surface, belonging to the public safety precaution and identification technical field. The optical anti-counterfeiting film can be widely applied to anti-counterfeiting and identification of identity certificates such as identity card, passport, police identification card, press card, certificate of lawyer, admission card for event and the like. The invention is characterized in that the optical anti-counterfeiting film is composed of a base layer, an information layer, a metal or metal compound layer and an embedding protective layer at least which are sequentially arranged from the top to bottom, wherein the interior of the base layer is embedded with multiple space frequency composite modulation microstructure stripe. Compared with the prior art, the invention has the following advantages: spatial use ratio is high, diffraction image without mutual interference can be seen at different angles in the same region; image vision angle width reappears in reflected light direction, colour saturation is high, influence of environmental lighting source is less; the reflected light direction can be light discoloration produced by the way that light continuation is simultaneously taken place on more than three broken colours; the restored true colour combined by RGB three colours can be reproduced in the reflected light direction; dynamic diffraction image can be reproduced by virtue of edge lighting light. The invention can be widely applied to visual anti-counterfeiting identification of identity certificates of resident identity card, passport, police identification card, press card, certificate of lawyer, teacher certificate.
Description
[technical field]
The present invention relates to a kind of visual optical anti-counterfeiting film that is used for document surface; Belong to public safety and take precautions against and distinguishment technical field, can be widely used in I.D., passport, police's card, press card, lawyer's card, and the false proof and identification of identity class certificates such as large-scale activity admission card.
[background technology]
Development along with society; Activity of human beings is more and more frequent; The chain of command of civil order is more seem particularly outstanding of challenge, the particularly strick precaution of public safety and management finally, from bank, customs, traffic, house property, trade, meeting, occasion and the discrepancy of important place etc.; People need carry out interpretation and discriminating to individual's identity in numerous occasions; Although along with progress of science and technology, electronization, informationization technology apply to the management of personal identification in a large number, still need some comprehensive false proof measures to differentiate for the individual is accredited.It is false proof measures of a kind of routine that traditional false proof means normally adopt the printing means of special printing ink combined high precision to make some card cards; But the high chi in road; Evil spirit is high one zhang; These traditional technical measures can not stop the manufacturing of palming off certificate fully, make the field so scientists has adopted numerous electronics, biology, infotech to join the card blocking again, these some technological incorporating; Played the effect that suppresses the personation certificate, yet remained indispensable important theme for the public of interpretation one line is false proof.
Optical anti-counterfeiting film also is used to the visual false proof discriminating of bank card, coin, stamp, I.D. and important goods for a long time in the eighties of last century the eighties beginning, be the extensively false proof measure of a line public of approval of a quilt, and this wherein; Laser holography had once been played the part of an important role; It is strong that it has stereoscopic sensation, and color is shown off, the characteristic of dynamic vigor; Find broad application at identification class certificates such as I.D., driver's license, passport, the Olympic Games, Guangzhou Export Commodities Fair passes; In visual optical anti-counterfeiting film, play a leading role, yet As time goes on highlight some new problems: 1. technology progressively manifests outmoded wearing out, and lacks new meaning.What 2. original technology were suitable popularizes, and anti-tamper security is on the hazard and queries.3. technological single, visual information is few, is easy to forgery or counterfeit.4. similar anti-counterfeiting technology is difficult to distinguish and screens.
Therefore, the innovation of visual optical anti-counterfeiting technology, break through very urgently and important, this is to the strick precaution of public safety, country and the maintenance of individual interest and having great importance of building a harmonious society.
[summary of the invention]
The present invention is a kind of novel optical anti-counterfeiting film; Be used for lamination, plastic packaging or thermoprint transfer on certificate; Can reproduce color dynamic image or literal dissimilar more than at least three kinds through the different illumination angle at same regional location; Have differently significantly with existing other optical anti-counterfeiting film, can be used as popular visual false proof discriminating.
The present invention provides a kind of optical anti-counterfeiting film that is used for certificate; It is characterized in that being arranged in order up and down by basal layer, Information Level, metal or metal compound layer, landfill protective seam at least forming, many empty clauses of complex modulated microstructure are frequently imbedded in described basal layer inside.This structure has certain periodicity; Can produce orientation, refraction, diffraction or scattering to incident light, constitute complicated solid, colored dynamic pattern, can be in a plurality of viewed to diverse image and literal; Have higher information capacity, and RM is simple.Optical anti-counterfeiting film also comprises release layer, adds chromatograph and adhesive lamination glue-line.
For realizing this invention; Material selection PETG or PVC make low film, and be coated with high-resolution, high sensitivity photosensitive resin, be used for carrying and write down needed information striped; Safety improves rendering graphical brightness by vacuum coating again, in order also will to cover and protects to recorded fringe.These materials must satisfy: 148 ℃ of high temperature, high pressure 110bar, long-time 30min can be born in (1), and image keeps that brightness is clear not to disappear.(2) the mutual adhesive strength of each layer material is for being not less than 5N/cm
2(3) transmittance >=85%.(4) adjacent materials refringence >=0.5.(5) metallic reflection rate >=80%.
Many empty clauses of complex modulated microstructure frequently are sinusoidal pattern structure clauses, are composited by the spatial frequency more than three kinds.
The spatial frequency of many empty clauses of complex modulated microstructure frequently is that 285nm-1997nm, Y axle amplitude height are that 120nm-800nm, Z axle are oriented to 0 °-179 ° for the X axial period.
The optical interference optically variable films is to be based upon on the parallel flat multiple-beam interference principle basis; Design according to the principle that has interference effect between the multilayer optical film; Its false proof principle is that each multi-layer film structure all has its specific reflectance spectrum curve, and this reflectance spectrum changes with the change of incident angle, promptly along with the visual angle of watching is different; Change color occurs, as present color such as golden yellow, green, brown, blue, ash.
Can know according to this principle; For a film structure of confirming (designing moulding on demand); Film material and thickness and people penetrate medium and are known number; Its surface reflectivity R is the function of lambda1-wavelength and incident angle just just, and a given R just can obtain this film and tie up under this condition the reflectance spectrum curve by Wavelength distribution.Be that each film of confirming system all has specific reflectance spectrum, and this reflectance spectrum will change with the change of incident angle, the change of spectral wavelength has just caused the sensation of human eye to the reflected light change color naturally." interference color " that artificial membrane that Here it is system produces can be penetrated the cause that variable color takes place light with the people.So just can carry out the design of film system according to the needs of different manufacturers; Reasonable computation, apolegamy and change film material and thicknesses of layers are to reach predetermined reflectance spectrum and optical property index; Realize the hope that people control and select body surface reflectance spectrum and optical property; And realize the distinctive optical interference coating of different manufacturers, thereby realize false proof purpose with this.
Comparatively desirable optical interference film is 5 layers of symmetrical structure at present; Film be thickness about 1 μ m, middle for both sides, opaque reflection horizon (can regard the common substrate of two interference cavity up and down as) be that the clear, colorless dielectric layer and its effect of semi-transparent metal layer of symmetry is to make the diaphragm upper and lower surface all have same interference color.The thickness that changes transparent medium just can change the color of film system, to obtain versicolor optical interference film.To process the whole of use under the high vacuum are colourless or transparent inorganic material because film ties up to, optical interference film stable performance, the compact structure that therefore generates, can not fade, weatherability is strong.
Many empty space multiplexing technique have frequently been adopted in the design of optical texture of the present invention, and each empty cell size frequently is at 100 μ m
2～64516 μ m
2, arrangement architecture is seen accompanying drawing 2, left and right sides adjacent cells is the different space frequency optical grating construction to be formed, and is used for realizing the reproduction of the same area different images, can control the reproduction of different images and disturb through widening the difference of spatial frequency.The two-beam interference exposure technique that computerizeds control, its spatial frequency changes (like Fig. 3) through the angle of two bundle laser, and computing formula is:
f＝2sin(θ/2)/λ
Wherein f is the spatial frequency of microstructure, and θ is the angle of twin-beam, and λ is for interfering the wavelength of light source.
Neighbouring unit is the different grating fringe angles of orientation to be formed, and the different orientation of striped is realized through the Rotating Double light beam mutually in the dynamic change that is used for realizing image and three-dimensional position, sees Fig. 5.
The optical anti-counterfeiting film of being made up of many empty clauses of complex modulated microstructure frequently constitutes graph area and is provided with at least three observation angles:
(1) first observation angle P
1, incident light LO is with 20 ° of-70 ° of direction incidents, at optical anti-counterfeiting film specular angle P
1Direction observation is to the first picture group picture, and said image is monochromatic, polychrome, or by R, G, B, the RGB formed, when optical anti-counterfeiting film H winding line direction was rotated, luminous position was constant, and color of image is continuous variation in 360nm～700nm wavelength coverage.
(2) second observation angle P
2, incident light LO is with α
1=40 ° ± 10 ° direction incidents are at optical anti-counterfeiting film normal P
2Direction can observe with first picture group as the diverse second picture group picture, said image be shrink, the dynamically changeable image of expansion, rotation, or 3-D view, holographic lens, true color image.
(3) the 3rd observation angle P
3, when incident light L ' O with α
2=80 ° ± 5 ° direction incidents become φ direction P at optical anti-counterfeiting film H with normal
3See the image that looks like to be associated with first picture group, when optical anti-counterfeiting film H winding line direction was rotated, color was constant, and image is jump or continuous variation.
The second observation angle P
2Incident light with α
1=45 ° ± 10 ° direction incidents, using 40 power microscopes to observe in the optical anti-counterfeiting film normal direction highly is the micro text or the image of 20～100 μ m size.
The second observation angle P
2With single beam laser with α
1=45 ° ± 10 ° direction incidents can go out hiding literal or image by enlarging projection in the optical anti-counterfeiting film normal direction.
Shown in the reproduction of finished product optical anti-counterfeiting film identification, owing to adopted many empty space multiplexing technique frequently, make 3 times of information reproductions to ordinary optical structural anti false film, also because the spatial frequency difference is bigger, so different reproduced images or literal do not disturb mutually.Design the time also consider common reproduction light source many be main with the oblique incidence illumination, be to adopt following formula calculating in compute ray incident and angle of diffraction:
d(sinφ-sin?α)＝λ
Wherein d is the optical grating construction constant, and φ is the optical grating diffraction angle, and α is the angle of incident light and grating surface normal, and λ is the color wavelength of playback light.
The present invention and existing correlation technique relatively have more following characteristics: space availability ratio is high, can see the diffraction image of no phase mutual interference in same regional different angles; Reflected light direction rendering graphical visual field angular width, color saturation is high, receives ambient lighting light source influence factor little; The reflected light direction can be that the continuous phototropic of light takes place the broken colour more than three kinds simultaneously; The reflected light direction can be reproduced three kinds of colors of RGB and be combined into the reduction RGB; Can reproduce dynamic diffraction shape with edge light light.This invention can be widely used in the visual anti-counterfeit recognition of identity class certificates such as resident identification card, passport, police's card, press card, lawyer's card, teacher's card.
[description of drawings]
Below in conjunction with
Fig. 1 is the synoptic diagram to the observation of optical anti-counterfeiting film different incidence angles.
Fig. 2 is a different space frequency grating arrangement architecture synoptic diagram.
Fig. 3 a, Fig. 3 b and Fig. 3 c are a series of different frequency grating fringes that the different angle of cut produced that produced by two bundle laser.
Fig. 4 a, Fig. 4 b and Fig. 4 c are a series of grating fringes that produce different orientation through the Rotating Double light beam.
Fig. 5, Fig. 5 a, Fig. 5 b, Fig. 5 c, Fig. 5 d are the display effect figure of finished product optical anti-counterfeiting film.
Fig. 5 a-1 is the partial enlarged drawing of Fig. 5 a.
Fig. 6 is for producing the stereographic map of the grating fringe of different orientation through the Rotating Double light beam.
Fig. 7 is replicated in the process flow diagram on PVC or the PETG film for the microstructure relief printing plate through the hot moulding and the casting that is shaped.
Wherein 1 among Fig. 7 is that microstructure relief printing plate 2 is PVC or PETG
Appointment Fig. 5 is a Figure of abstract
[embodiment]
1, adopts 355nm wavelength laser light source, laser beam L is divided into two-beam L with beam splitting element
1And L
2After again scioptics form light and dark interference fringe (see figure 6) with the polymerization of θ angle at convergent point.
2, with mobile x, y, splitting angle θ device and the rotation angle β of computing machine programmed control exposure position, on photoresist dry plate K, the light and shade interference fringe of designed with patterns stroke being made public writes.Wherein θ angle setting range is 10.2 °～77 °, and β angle rotating range is 0 °～179.3 °, and each exposure station cellar area is 400 μ m
2
3, on the exposure area, form microstructure notch board figure after photoresist dry plate K develops with diffraction characteristic.
4, will have microstructure photoresist notch board and duplicate transfer on metal nickel plate, form the optical microstructures relief printing plate, promptly become metallic nickel optical microstructures mould through electroforming process.
5, the microstructure relief printing plate on the metal die is replicated in (see figure 7) on PVC or the PETG film through the hot moulding and the casting that is shaped.
6, at the PVC that duplicates acquisition or PETG blooming microstructure face plated metal or metallic compound, to strengthen the brightness of image effect.
7, in order to increase the cohesive strength of transparent effect and raising blooming and bearing substrate, etch away the unnecessary vacuum plating layer of part, promptly obtain finished product Microstructure Optics anti false film.
The display effect of finished product optical anti-counterfeiting film
1, spatial reuse is always schemed layer and is seen Fig. 5
2, P
1The figure that the position is seen is seen Fig. 5 c, along the rotation of figure normal direction, is integral color and changes.
3, P
2The figure that the position is seen is seen Fig. 5 a and Fig. 5 b, along the rotation of figure normal direction, is dynamic expansion and changes, and change Fig. 5 b into by Fig. 5 a figure.
4, P
3The figure that the position is seen is seen Fig. 5 d, along the rotation of figure normal direction, is dynamically and change color.
The figure micro is seen the local amplification of Fig. 5 a-1.
Claims (6)
1. optical anti-counterfeiting film that is used for certificate; It is characterized in that being arranged in order up and down by basal layer, Information Level, metal or metal compound layer, landfill protective seam at least forming; Many empty clauses of complex modulated microstructure are frequently imbedded in described basal layer inside, and the optical anti-counterfeiting film that described many empty clauses of complex modulated microstructure are frequently formed constitutes graph area and is provided with at least three observation angles:
The first observation angle P
1, incident light LO is with 20 ° of-70 ° of direction incidents, at optical anti-counterfeiting film specular angle P
1Direction observation is to the first picture group picture, and said image is monochrome or polychrome, and when optical anti-counterfeiting film H winding line direction was rotated, luminous position was constant, and color of image is continuous variation in 360nm～700nm wavelength coverage;
The second observation angle P
2, incident light LO is with α
1=40 ° ± 10 ° direction incidents are at optical anti-counterfeiting film normal P
2Direction can observe with first picture group as the diverse second picture group picture, said image be shrink, the dynamically changeable image of expansion, rotation, or 3-D view, holographic lens, true color image;
The 3rd observation angle P
3, when incident light L ' O with α
2=80 ° ± 5 ° direction incidents become φ direction P at optical anti-counterfeiting film H with normal
3See the image that looks like to be associated with first picture group, when optical anti-counterfeiting film H winding line direction was rotated, color was constant, and image is jump or continuous variation.
2. a kind of optical anti-counterfeiting film that is used for certificate according to claim 1 is characterized in that base layer material selects PETG or PVC for use.
3. a kind of optical anti-counterfeiting film that is used for certificate according to claim 1 is characterized in that many empty clauses of complex modulated microstructure frequently are sinusoidal pattern structure clauses, is composited by the spatial frequency more than three kinds.
4. according to claim 1 or 3 described a kind of optical anti-counterfeiting films that are used for certificate, it is characterized in that the spatial frequency of many empty clauses of complex modulated microstructure frequently is that 285nm-1997nm, Y axle amplitude height are that 120nm-800nm, Z axle are oriented to 0 °-179 ° for the X axial period.
5. according to claim 1 or 4 described a kind of optical anti-counterfeiting films that are used for certificate, it is characterized in that the second observation angle P
2Incident light with α
1=45 ° ± 10 ° direction incidents, using 40 power microscopes to observe in the optical anti-counterfeiting film normal direction highly is the micro text or the image of 20～100 μ m size.
6. according to claim 1 or 4 described a kind of optical anti-counterfeiting films that are used for certificate, it is characterized in that at the second observation angle P
2With single beam laser with α
1=45 ° ± 10 ° direction incidents can go out hiding literal or image by enlarging projection in the optical anti-counterfeiting film normal direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102002015A CN101727778B (en) | 2009-12-10 | 2009-12-10 | Optical anti-counterfeiting film used for certificates and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102002015A CN101727778B (en) | 2009-12-10 | 2009-12-10 | Optical anti-counterfeiting film used for certificates and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101727778A CN101727778A (en) | 2010-06-09 |
| CN101727778B true CN101727778B (en) | 2012-03-21 |
Family
ID=42448607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102002015A Active CN101727778B (en) | 2009-12-10 | 2009-12-10 | Optical anti-counterfeiting film used for certificates and application thereof |
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| Country | Link |
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| CN (1) | CN101727778B (en) |
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| JP2012118387A (en) * | 2010-12-02 | 2012-06-21 | Sony Corp | Identification label, method of producing identification label, and method of checking identification label |
| CN102538165B (en) * | 2012-01-17 | 2017-02-08 | 海尔集团公司 | Light-sensitive and color-change air conditioner |
| CN103847289B (en) * | 2012-11-29 | 2016-03-23 | 中钞特种防伪科技有限公司 | There is the optical anti-counterfeit element reproducing hidden image and the product made with it |
| CN103354059B (en) * | 2013-07-22 | 2015-07-15 | 上海宏盾防伪材料有限公司 | Perspective laser holography anti-fake film with reflecting effect and preparing method thereof |
| CN103354060B (en) * | 2013-07-24 | 2015-07-22 | 上海宏盾防伪材料有限公司 | Preparation method for legal certificate visual anti-fake component |
| JP6369032B2 (en) | 2014-01-29 | 2018-08-08 | 凸版印刷株式会社 | Manufacturing method of image display device |
| GB2536877B (en) * | 2015-03-23 | 2017-06-28 | De La Rue Int Ltd | Security device and method of manufacture |
| CN106290398A (en) * | 2015-05-15 | 2017-01-04 | 高准精密工业股份有限公司 | Optical system and apply the classification determination methods of tested target of this optical system |
| CN105799349A (en) * | 2016-03-22 | 2016-07-27 | 江苏大亚新型包装材料有限公司 | Treatment method of cigarette tipping paper with three-dimensional refraction, reflection and gold stamping effects |
| CN108091246A (en) * | 2017-12-28 | 2018-05-29 | 苏州印象镭射科技有限公司 | The detection method of augmented reality label, the preparation method of augmented reality label and augmented reality label |
| GB2573816B (en) | 2018-05-18 | 2021-06-09 | De La Rue Int Ltd | Security device and method of manufacture thereof |
| JP6531858B2 (en) * | 2018-07-12 | 2019-06-19 | 凸版印刷株式会社 | Image display device, image display medium, and hologram ribbon |
| CN114694477B (en) * | 2022-04-26 | 2024-02-20 | 苏州印象技术有限公司 | Manufacturing method of optical flash powder |
| CN114638826B (en) * | 2022-05-13 | 2022-10-28 | 河南银金达新材料股份有限公司 | Method for detecting optical fatigue degree of photochromic barrier film |
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2009
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| Publication number | Publication date |
|---|---|
| CN101727778A (en) | 2010-06-09 |
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