CN1552589B - Continuous microlens array amplifying display anti-fake method - Google Patents
Continuous microlens array amplifying display anti-fake method Download PDFInfo
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- CN1552589B CN1552589B CN 03123580 CN03123580A CN1552589B CN 1552589 B CN1552589 B CN 1552589B CN 03123580 CN03123580 CN 03123580 CN 03123580 A CN03123580 A CN 03123580A CN 1552589 B CN1552589 B CN 1552589B
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- lens array
- micro lens
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- micropicture
- counterfeit
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Abstract
An amplifying display anti-counterfeiting method of a continuous microlens array relates to a micro-optical element display technology. The method comprises the steps of manufacturing a micro-pattern by adopting printing, hair piece, laser printing, micro-machining and micro-engraving methods, manufacturing a continuous surface micro-lens array with the caliber matched with the micro-pattern by adopting the micro-machining method, combining the micro-lens array and the continuous surface micro-lens array through separation, film pressure combination, pasting combination and the like to obtain various amplification display and three-dimensional effects of single-pattern single color, multi-pattern multi-color and the like, and the micro-pattern has strong dynamic sense, and can be conveniently observed to be indistinguishable by naked eyes, so that the anti-counterfeiting purpose is realized. The invention has the advantages of flexible combination mode, unique effect, low cost, wide application range and good market prospect.
Description
Technical field
The present invention relates to a kind of continuous micro lens array and amplify the demonstration method for anti-counterfeit, belong to the micro-optic display technique.
Background technology
In recent years, the anti-counterfeiting technology development mainly is based on laser hologram rapidly.But this technology is semi-over, and antiforge function is challenged.Also have such as various methodologies such as code anti-fakes, realization is inconvenient, system is miscellaneous.
People have proposed to adopt to amplify and have shown method for anti-counterfeit for this reason, and the principle of this method for anti-counterfeit is: under the normal illumination condition, the limiting angle of resolution of human eye is 1 '.Under the condition of distance of distinct vision 250mm, the limiting resolution of human eye is 0.072mm.In general for making eyes be unlikely to tired, the visual angle of human eye is about 4 ', promptly can resolution distance is 2 points about 0.3mm.In the ordinary course of things, about 10 * 10 points are formed word, character or a figure.Promptly want pleasant read purposefully or differentiate figure, its area size is greatly about about 4mm * 4mm.Other tiny object must adopt magnifier or microscope that it is amplified, and makes the limiting angle of resolution of the visual angle of intensified image greater than eyes, just can see its microtexture clearly.Promptly must adopt about 15 times magnifier just can see clearly Chu if observe the object of 0.3mm * 0.3mm.If do not help, will be beyond recognition figure and font by means of magnifier or microscope ground.Generally made by optical glass or plastics but amplify the demonstration method for anti-counterfeit, have certain volume and weight, this brings very big inconvenience to observation.
Summary of the invention
Technology of the present invention is dealt with problems and is: overcome the deficiencies in the prior art, provide a kind of convenience, simple micro lens array continuously to amplify and show method for anti-counterfeit, this method has been studied the amplification displaying principle of continuous micro lens array element, design and produce the Micropicture and the micro lens array that match each other, in conjunction with both, the Micropicture that human eye can't be differentiated is amplified demonstration in several ways, and has dynamic effect, and novel, effect is unique, can realize good antiforge function.
Technical solution of the present invention is finished by following steps: micro lens array amplifies the demonstration method for anti-counterfeit continuously, and its characteristics are to comprise the following steps:
(1) designs and produces Micropicture or microstructure;
(2) with the method for microfabrication, make the micro lens array that bore and Micropicture are complementary;
(3) combination Micropicture and micro lens array obtain amplification, demonstration, three-dimensional stereo effect; Described combination Micropicture and micro lens array are according to separate type or combined type; Described separate type is that micro lens array and Micropicture can use separately, produces the amplification display effect when both directly paste the added-time; Described combined type is with mould or glue bond mode integral micro-lens array on Micropicture.
The producing method of above-mentioned Micropicture is varied, can adopt the methods such as preceding operation-Fa sheet, laser printing, microfabrication, microscopic carvings quarters of printing, printing.
The method of above-mentioned microfabrication can utilize mask to move method, the gray-tone mask method, photoetching hot fusion method etc. is shaped on photoetching material. and photoetching material can be photoresist or gelatin. can select to use dry method, wet etching, do wet method in conjunction with and method accurate transfer figure such as duplicate in required surface. the carrier of final graphics can be a soft material, as rete, organic material surface etc., it also can be hard material, as optical glass, optical plastic. the section of micro lens array unit is a convex surface, horizontal cross sectional geometry is circular, square, polygon (the limit number is more than or equal to 5), and can reduce the micro lens array cost by batch duplicating production.
Combination Micropicture and micro lens array can mainly contain two classes according to the array mode of micro lens array and Micropicture: separate type and combined type.Separate type be that micro lens array and Micropicture can use separately, produce to amplify display effect when both directly paste the added-time.Can freely select in use simultaneously, produce the variation on display graphics color, the size, thereby because the vision stop and the parallax of human eye produce strong innervation and three-dimensional stereo effect in conjunction with angle.This technology is particularly useful for the discriminating of the true and false, and best example is used to differentiate banknote exactly.Can print specific structure in some position of banknote, hold the instrument that micro lens array is arranged above corresponding with it with cash in hand in the staff.This instrument promptly can be rete or be produced on optical glass, the optical plastic.Can design and produce into ornament such as key chain etc., in light weight, be convenient for carrying.When tool using was differentiated, if genuine note will can be observed Micropicture, and with the difference of angle, effect changed, than use magnifier observe attractive in appearance, practical, make things convenient for, strong innervation and three-dimensional stereo effect are arranged.Combined type be on Micropicture with mould, mode integral micro-lens arrays such as glue bond, as: the commodity surface adds the Micropicture rete, adds soft micro lens array rete again; Add the Micropicture layer on surfaces such as various commemorative coin badges, add the micro lens array of soft or hard again; On various card classes, adhere to the multiple different scope of applications such as figure, lens.
Method of the present invention is used to differentiate the true and false of banknote or is used for the false proof of commodity or is used for surperficial special amplification display effect such as various commemorative coins, badge, various card classes.Its display effect can be divided into following four classes: the one, and single figure solid color demonstration, the 2nd, the multiple color demonstration of single figure, the 3rd, multiple figure solid color demonstration, the 4th, multiple figure multicolour shows.Effect is decided by Micropicture.If only designed and produced a kind of pattern, and have only a kind of color, then display result is identical with it.Effect is decided by Micropicture, if Micropicture by different graphic and different color, then display result is more rich and varied.
Principle of the present invention is: the micro lens array of continuous surface is a kind of micro optical element based on refraction principle, and when cross sectional shape when being protruding, each sub-lens has the function of amplification.The array element is exactly a plurality of set with sub-lens of enlarging function.The method that produces Micropicture has printing, sends out sheet, laser printing, microfabrication, microscopic carvings quarter etc. is multiple, design and with the close or consistent with it micro lens array of the method for microfabrication making bore, by separate type and combined type in conjunction with both, each sub-lens has amplification effect to corresponding subregion, so just the character in the subregion has been amplified, utilized this special amplification display effect to reach false proof purpose.
The present invention compared with prior art has the following advantages:
1. the array mode of micro lens array and Micropicture is versatile and flexible;
2. amplify the display effect uniqueness, do not observe the micrographics that naked eyes can't be differentiated by instrument, the equipment of complexity;
3. same sample is realized multiple display effect and is had strong innervation and three-dimensional stereo effect;
4. the producing method of lenticule and micrographics is varied, requires lowly, does not need strict counterpoint, and is with low cost;
5. attractive in appearance, practical, easy to carry.Applied widely, have good market outlook.
Description of drawings
Fig. 1 is amplification displaying principle figure of the present invention;
Fig. 2 is the synoptic diagram that adopts array mode in the step of the present invention (3);
Fig. 3 is the synoptic diagram that adopts separate mode in the step of the present invention (3);
Fig. 4 is the micrographics structural representation that the embodiment of the invention 1 is made;
Fig. 5 is the microphoto that the embodiment of the invention 1 is made lens array;
Fig. 6 is the embodiment of the invention 1 a display result synoptic diagram;
Fig. 7 is the micrographics structural representation that the embodiment of the invention 2 is made;
Fig. 8 is the 3 D stereo synoptic diagram of the lens array of the embodiment of the invention 2 making;
Fig. 9 is the embodiment of the invention 2 display result synoptic diagram;
Figure 10 is the micrographics structural representation that the embodiment of the invention 3 is made;
Figure 11 is the embodiment of the invention 3 display result synoptic diagram.
Sequence number implication among the figure: continuous micro lens array 1, Micropicture 2, not in conjunction with micro lens array zone 3, in conjunction with micro lens array zone 4, a kind of display effect 5 of multiple pattern, the another kind of display effect 6 of multiple pattern.
Embodiment
Embodiment 1, as Fig. 1, shown in Figure 4, at first makes Micropicture or microstructure, adopt better simply sheet method to finish, the bore that designs each spirte is 200 μ m, and figure is a crescent shape, produce output by sending out the sheet machine, be formed on organic material, on plastic film; Second, method with microfabrication, make the micro lens array that bore and Micropicture bore 200 μ m and shape are complementary, the making of shape micro lens array adopts mobile mask means to be formed at gelatin photoetching material surface continuously, manufacturing process can be adopted dry method or wet etching or dried wet method combination, in the organic plastics surface, lenticular microphoto as shown in Figure 5 by the method transition diagram that duplicates; At last, adopt the gluing method of combined type, as shown in Figure 2, be combined into Micropicture and micro lens array, obtain amplification, demonstration, three-dimensional stereo effect both combinations; Its display result has been added the local of micro lens array and the place contrast of additional micro lens array is very not strong as shown in Figure 6, and is that the figure that with the naked eye can't differentiate of 200 μ m shows significantly with bore.
Embodiment 2, the making of μ character and demonstration.
At first, make Micropicture or microstructure, adopt the laser direct-writing legal system to obtain Micropicture or microstructure as mask plate, the bore 100 μ m of the spirte of design, figure is the μ character, directly is produced on the chromium laminar surface on the substrate of glass, as shown in Figure 7.Continuously the shape micro lens array is with the moulding of gray-tone mask method, and the method by direct etching is formed at optical material surface (as melting quartz, K9), is the line drawing of micro lens array as shown in Figure 8.Adopt the separate type method, as shown in Figure 3.The display result that obtains during observation as shown in Figure 9.
Embodiment 3, the demonstration of multiple figure.
At first, adopt laser printing to obtain Micropicture, the bore of spirte is 150 μ m, and figure is square and circular two kinds, as shown in figure 10; Make microlens array again, adopt the gray-tone mask method to be shaped on photoetching material, and then lenticule is compressed on frosting, both combine by mould again.
Embodiment 4, adopt the method for diamond turning to make the convex lens array, and the horizontal section is circular.Base material is a K9 glass, spirte bore 500 μ m.Above the various card classes of minute pattern production, both adopt separate type, when independent use, have the card of Micropicture and other is not as broad as long with the card of Micropicture, behind the affix micro lens array, produce to amplify and show and dynamic special-effect.
Embodiment 5, adopt the photoetching hot melt to make Micropicture, and the spirte bore is 50 μ m, and the horizontal section is a regular hexagon.Be fabricated in the optical plastic substrate by the method for duplicating.Be made into the souvenir badge, the Micropicture of using the making of photograph reprint method of printing is attached to its lower surface, and both are closely linked.
Claims (8)
1. micro lens array amplifies the demonstration method for anti-counterfeit continuously, it is characterized in that comprising the following steps:
(1) designs and produces Micropicture or microstructure;
(2) with the method for microfabrication, make the micro lens array that bore and Micropicture are complementary;
(3) combination Micropicture and micro lens array obtain amplification, demonstration, three-dimensional stereo effect; Described combination Micropicture and micro lens array are according to separate type or combined type; Described separate type is that micro lens array and Micropicture can use separately, produces the amplification display effect when both directly paste the added-time; Described combined type is with mould or glue bond mode integral micro-lens array on Micropicture.
2. continuous micro lens array according to claim 1 amplifies the demonstration method for anti-counterfeit, it is characterized in that: the making Micropicture in the described step (1) or the method for microstructure are to adopt printing, a sheet, laser printing, microfabrication, microscopic carvings carving method.
3. continuous micro lens array according to claim 1 amplifies and shows method for anti-counterfeit, it is characterized in that: the fine machining method in the described step (2) is to adopt mask to move method, gray-tone mask method, photoetching hot fusion method to be shaped on photoetching material.
4. continuous micro lens array according to claim 3 amplifies the demonstration method for anti-counterfeit, and it is characterized in that: described photoetching material is photoresist or gelatin.
5. continuous micro lens array according to claim 3 amplifies and shows method for anti-counterfeit, it is characterized in that: described employing mask moves the method that method, gray-tone mask method, photoetching hot fusion method be shaped on photoetching material be dry method or wet etching or dried wet method combination.
6. continuous micro lens array according to claim 1 amplifies and shows method for anti-counterfeit, and it is characterized in that: the unit section of described micro lens array is a convex surface, and horizontal cross sectional geometry is circle or square or limit number more than or equal to 5 polygon.
7. continuous micro lens array according to claim 3 amplifies the demonstration method for anti-counterfeit, it is characterized in that: described employing mask moves the carrier that method, gray-tone mask method, photoetching hot fusion method be shaped on photoetching material be rete or organic material surface, can also be optical glass or optical plastic.
8. continuous micro lens array according to claim 1 amplifies and shows method for anti-counterfeit, it is characterized in that: described method is used to differentiate the true and false of banknote or is used for the false proof of commodity or is used for the special amplification display effect on various commemorative coins, badge surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03123580 CN1552589B (en) | 2003-05-29 | 2003-05-29 | Continuous microlens array amplifying display anti-fake method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03123580 CN1552589B (en) | 2003-05-29 | 2003-05-29 | Continuous microlens array amplifying display anti-fake method |
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| CN1552589A CN1552589A (en) | 2004-12-08 |
| CN1552589B true CN1552589B (en) | 2010-05-05 |
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| CN 03123580 Expired - Fee Related CN1552589B (en) | 2003-05-29 | 2003-05-29 | Continuous microlens array amplifying display anti-fake method |
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Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1760712B (en) * | 2005-11-23 | 2010-05-05 | 中国科学院光电技术研究所 | Micro character flat magnifier |
| DE102008036482A1 (en) * | 2008-08-05 | 2010-02-11 | Giesecke & Devrient Gmbh | Method for producing microlenses |
| CN102370299A (en) * | 2010-08-25 | 2012-03-14 | 中国印钞造币总公司 | Microlens array imaging anticounterfeiting coin or badge |
| CN102376116A (en) * | 2010-08-25 | 2012-03-14 | 中国印钞造币总公司 | Anti-counterfeiting coin/seal with perspective amplified pattern |
| CN102466884A (en) * | 2010-11-08 | 2012-05-23 | 赵建平 | Micro-optical-structure-based dynamic display technology |
| CN103087555B (en) * | 2012-12-11 | 2014-12-03 | 中钞油墨有限公司 | Microstructure metallic pigment with anti-fake function and preparation method of microstructure metallic pigment |
| CN103386853A (en) * | 2013-06-27 | 2013-11-13 | 郑国义 | Micro-carving three-dimensional identification secret marker and formation method thereof |
| CN103317229B (en) * | 2013-07-11 | 2016-01-20 | 苏州大学 | Method and system write comments on a document by a kind of label |
| CN103978803B (en) * | 2014-05-28 | 2016-04-06 | 上海茂璞实业发展有限公司 | A kind of optical anti-counterfeiting unit |
| CN105313529B (en) * | 2014-08-01 | 2017-07-28 | 中钞特种防伪科技有限公司 | Optical anti-counterfeit element and the anti-fake product using the optical anti-counterfeit element |
| CN105479974B (en) | 2015-12-01 | 2018-07-13 | 中钞特种防伪科技有限公司 | A kind of optical anti-counterfeit element and the optical anti-counterfeiting product using the optical anti-counterfeit element |
| CN105845023A (en) * | 2016-05-04 | 2016-08-10 | 何炎权 | Anti-counterfeiting mark encryption method, anti-counterfeiting mark encryption device and manufacturing method of anti-counterfeiting mark encryption device |
| CN106383407A (en) * | 2016-12-02 | 2017-02-08 | 中国科学院光电技术研究所 | Flexible naked eye three-dimensional display thin film device based on micro-nano structure |
| CN108454265B (en) | 2017-02-20 | 2023-09-08 | 中钞特种防伪科技有限公司 | Anti-counterfeiting element and optical anti-counterfeiting product |
| CN109875202B (en) * | 2019-04-02 | 2024-05-14 | 胡惠 | Nanometer micro-engraving display body for 3D display of stereoscopic imaging graph, manufacturing method and jewelry |
| CN110133767B (en) * | 2019-05-09 | 2020-10-13 | 中国科学院光电技术研究所 | Optimization method of dynamic display anti-counterfeiting technology micro-lens array |
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2003
- 2003-05-29 CN CN 03123580 patent/CN1552589B/en not_active Expired - Fee Related
Patent Citations (4)
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| WO1993008513A1 (en) * | 1991-10-18 | 1993-04-29 | Innovative Imaging Systems, Inc. | Method of producing anti-reproduction coatings for documents |
| CN1271106A (en) * | 1999-04-21 | 2000-10-25 | 四川大学 | Combined micro lens and micro figure film |
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| CN1346061A (en) * | 2000-09-25 | 2002-04-24 | 中国科学院光电技术研究所 | Method for manufacturing microlens array |
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