WO2016029692A1 - Coloured dynamic stereoscopic moire image thin film based on micro printing and preparation method therefor - Google Patents

Coloured dynamic stereoscopic moire image thin film based on micro printing and preparation method therefor Download PDF

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WO2016029692A1
WO2016029692A1 PCT/CN2015/075480 CN2015075480W WO2016029692A1 WO 2016029692 A1 WO2016029692 A1 WO 2016029692A1 CN 2015075480 W CN2015075480 W CN 2015075480W WO 2016029692 A1 WO2016029692 A1 WO 2016029692A1
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micro
array
layer
pattern
metal mask
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PCT/CN2015/075480
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French (fr)
Chinese (zh)
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申溯
朱昊枢
朱鹏飞
陈林森
沈悦
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苏州大学
苏州苏大维格光电科技股份有限公司
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30Identification or security features, e.g. for preventing forgery
    • B42D25/342Moiré effects
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40Manufacture

Abstract

Disclosed are a coloured dynamic stereoscopic moire image thin film based on micro printing and a preparation method therefor. A moire image thin film comprises a transparent base material layer, a micro lens array layer located at one side of the transparent base material layer and a micro pattern array layer located at the other side of the transparent base material layer. The micro lens array layer comprises several micro lenses arranged in an array. The micro pattern array layer comprises several sets of micro patterns arranged in an array and having different colours. The array arrangement of the micro lenses matches the array arrangement of the micro patterns. The moire image formed by the moire image thin film is characterized by being coloured, dynamic and stereoscopic. In any light environment, an observer can observe a coloured three-dimensional dynamic pattern without any special observation skill.

Description

基于微印刷的彩色动态立体莫尔图像薄膜及其制备方法Color dynamic stereoscopic moiré image film based on micro-printing and preparation method thereof
本申请要求于2014年08月27日提交中国专利局、申请号为201410428043.X、发明名称为“基于微印刷的彩色动态立体莫尔图像薄膜及其制备方法”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。This application claims priority to Chinese Patent Application No. 201410428043.X, entitled "Micro-Printed Color Dynamic Stereo Moire Image Film and Its Preparation Method", filed on August 27, 2014, The entire contents of this application are incorporated herein by reference.
技术领域Technical field
本发明涉及公众光学视觉安全防伪技术领域,特别是涉及一种基于微印刷的彩色动态立体莫尔图像薄膜及其制备方法。The invention relates to the field of public optical visual security anti-counterfeiting technology, in particular to a micro-printing color dynamic stereoscopic moiré image film and a preparation method thereof.
背景技术Background technique
现有技术中主要使用的光学防伪技术分为三类:公众防伪、专业防伪和三线防伪。公众防伪主要采用形成主景图案、多通道和动态技术。专业防伪大都采用微缩图像和文字,用自带光源的高倍放大镜可清楚辨别。三线防伪主要为衍射单元和各种编码技术等。其中,公众防伪技术特点是在通常状态下,不借助任何仪器,用肉眼或者感觉器官能够直接识别特征,最易为广大人民群众辨别,因此尤为重要。它应具有两个基本要素:易于识别和难于伪造。The optical anti-counterfeiting technologies mainly used in the prior art are classified into three categories: public anti-counterfeiting, professional anti-counterfeiting, and three-wire anti-counterfeiting. Public security is mainly used to form the main scene pattern, multi-channel and dynamic technology. Most professional anti-counterfeiting uses miniature images and text, which can be clearly distinguished by a high magnification magnifier with its own light source. The three-wire anti-counterfeiting is mainly a diffraction unit and various coding techniques. Among them, the public anti-counterfeiting technology is characterized by the fact that, under normal conditions, the naked eye or the sensory organ can directly identify features without using any instrument, and it is most easy to distinguish for the masses of the people, so it is especially important. It should have two basic elements: easy to identify and difficult to forge.
在公众防伪技术中,目前用于标签、钞票、信用卡等的光学防伪技术主要指衍射光变图像DOVID(Diffractive Optically Variable Image Devices),它包含人们所熟知的全息图像,包括后期发展起来的像素全息图、点阵全息图和动态莫尔图等。知名的产品如法国Hologram Industries公司近年来发展的一种DOVID技术,其特点是图像分辨率为600LPI,但细微文字和线条的衍射单元分辨率可达到6000LPI,图像亮度高、色彩鲜艳。衍射识别技术的光栅结构是由瑞士Paul Scherrer学院Zurich实验室发明,它的光栅周期小于0.4μm(模 压全息光栅周期一般为1μm)。当水平位置观察图像(或文字)时为红色;将图像在平面内转90°时,则观察到深绿色。机读的可靠性高且设备价格低。但是随着全息在票证、商标、包装等领域的广泛应用,许多厂家都具有了生产全息产品的能力,使得激光全息陷入了信任危机。Among the public anti-counterfeiting technologies, the optical anti-counterfeiting technology currently used for labels, banknotes, credit cards, etc. mainly refers to Diffractive Optically Variable Image Devices (DOVID), which contains well-known holographic images, including pixel holograms developed in the later stage. Graphs, dot matrix holograms, and dynamic Mortu charts. Well-known products such as the French Hologram Industries company developed a DOVID technology in recent years, which is characterized by an image resolution of 600LPI, but the diffraction resolution of fine text and lines can reach 6000LPI, and the image brightness is high and the color is bright. The grating structure of the diffraction identification technique was invented by the Zurich laboratory of the Paul Scherrer Institute in Switzerland, with a grating period of less than 0.4 μm (modulo) The pressure holographic grating period is generally 1 μm). It is red when the image is viewed horizontally (or text); when the image is rotated 90° in the plane, dark green is observed. Machine-readable reliability is high and equipment prices are low. However, with the wide application of holography in the fields of ticket, trademark, packaging, etc., many manufacturers have the ability to produce holographic products, which makes laser holography into a crisis of trust.
因此,人们迫切地需要寻找满足技术高、成本低、易识别、可仲裁的新一代大众技术。如第四代激光组合全息图技术,将几十甚至几百个不同的二维图像通过几十甚至几百次曝光所记录的全息图,将三维目标的各个侧面及随时间的变化过程记录下来,即该全息图不仅能够记录和再现物体的三维空间(X,Y,Z)特性,还能记录和再现该三维物体随时间(T)的变化。制作这种全息图对拍摄对象没有限制,需要对几十甚至几百帧二维图像进行记录,从而曝光次数是普通全息的几十甚至几百倍,这需要专用的仪器设备及更加精巧的工艺过程才能实现。还有如澳大利亚SecurencyPTY公司的G-switch技术,通过制作特殊的光学层,实现从一个方向观察是某颜色,从与之正交方向上观察是该颜色的补色,无须特殊培训和仪器。仅仅在一秒至几秒内,用简便的方法就可以鉴别。另外,人们还发明了安全线及其开窗技术,进一步提高技术门槛,安全线是起作用的薄膜材料制成的线状标志。Therefore, there is an urgent need to find a new generation of mass technology that meets high technology, low cost, easy to identify, and arbitrable. For example, in the fourth-generation laser combined hologram technology, tens or even hundreds of different two-dimensional images are recorded by tens or even hundreds of exposures, and the various aspects of the three-dimensional object and the changes with time are recorded. That is, the hologram can not only record and reproduce the three-dimensional (X, Y, Z) characteristics of the object, but also record and reproduce the change of the three-dimensional object with time (T). The production of such a hologram has no limitation on the object, and it is necessary to record two or even hundreds of frames of two-dimensional images, so that the number of exposures is several tens or even hundreds of times that of ordinary holography, which requires special instruments and more elaborate processes. The process can be achieved. In addition, the G-switch technology of Australian SecurencyPTY Company makes it possible to observe a color from one direction by making a special optical layer, and to observe the complementary color of the color from the orthogonal direction, without special training and instruments. It can be identified in a simple way in just one second to several seconds. In addition, people have also invented the safety line and its window opening technology to further improve the technical threshold, which is a linear mark made of a working film material.
还有一类引人注目的新一代技术是将微透镜阵列(Microlens array,MLA)与微图形阵列(Micropattern array,MPA)结合实现的莫尔放大技术。莫尔放大涉及一种现象,从具有大致相同周期维度的微透镜阵列观察由相同微图形组成的阵列时可以产生这种现象,即以微图形的放大或者旋转形式出现。莫尔放大现象基本原理在M.C.Hutley,R.Hunt,R.F.Stevens and P.Savander,Pure  Appl.Opt.3(1994),pp.133~142中有所描述。Drinkwater等在美国专利No.5,712,731中率先提出了将半球形微凸透镜阵列与微图形阵列结合的安全器件。微图形在微凸透镜的后焦面附近,人眼在微透镜凸面侧观察可看到微图形的莫尔放大像,其中微凸透镜口径在50~250微米,微图形阵列通过凹版印刷的方式得到,最小分辨率为5微米。为了克服上述专利不利于制作超薄型(厚度小于50微米)器件的弊端,美国专利No.2005/0180020Al及后续专利No.2008/0037131Al中,R.A.Steenblik等进一步扩展了依据上述微光学原理制作的安全器件范围,如微凸透镜口径减小至20~30微米,焦距小于50微米,间隔层厚度小于50微米,微图形层具有多变的复杂排布,可以是透明、半透明、荧光、磷光、染、光变颜料等,并提出了若干基于反射工作模式的结构等等。在中国专利安全元件(申请号200680048634.8)中提出了一种预定弯曲的布拉维点阵结构。通过设计微透镜阵列与微图形阵列及其排列组合,能够实现多种视觉效果:1)微图形放大:即原本看不见的微图形被放大至可由肉眼直接观察;2)正交移动:即沿某方向晃动时,观察到的宏观图像沿与之垂直的方向移动;3)立体感:观察到的宏观图像具有浮出或者沉陷于纸面的立体效果;4)运动变形:观察到的宏观图像在移动过程中还可能发生大小、形状等的变化。莫尔放大技术既可以单独实现对微图形的上述几种视觉效果,还可以同时实现上述几种视觉效果的组合,作为一种极易为肉眼辨视的一线技术,其不能为数字成像、扫描、复印、印刷设备等复制。Another class of compelling next-generation technologies is the Moiré amplification technology that combines a microlens array (MLA) with a micropattern array (MPA). Moiré amplification involves a phenomenon that can occur when observing an array of the same micropattern from a microlens array having substantially the same periodic dimension, i.e., in the form of an enlarged or rotated form of the micropattern. The basic principle of the Moir amplification phenomenon is M.C.Hutley, R.Hunt, R.F. Stevens and P.Savander, Pure Appl. Opt. 3 (1994), pp. 133-142 is described. A safety device that combines a hemispherical micro-convex lens array with a micro-pattern array is first proposed in U.S. Patent No. 5,712,731. The micro-pattern is near the back focal plane of the micro-convex lens, and the human eye can see the magnified image of the micro-pattern on the convex side of the micro-lens. The micro-convex lens has a diameter of 50-250 micrometers, and the micro-pattern array is obtained by gravure printing. The minimum resolution is 5 microns. In order to overcome the drawbacks of the above-mentioned patents which are disadvantageous for the fabrication of ultra-thin (thickness less than 50 micron) devices, RASteenblik et al. further expand the fabrication according to the micro-optics principle described above in U.S. Patent No. 2005/0180020 Al and subsequent patent No. 2008/0037131 Al. The range of safety devices, such as micro-convex lens diameter reduced to 20 ~ 30 microns, focal length less than 50 microns, spacer layer thickness less than 50 microns, micro-pattern layer has a variety of complex arrangements, can be transparent, translucent, fluorescent, phosphorescent, Dyeing, light-changing pigments, etc., and proposed a number of structures based on the reflection mode of operation and the like. A predetermined curved Brava lattice structure is proposed in the Chinese patent security element (Application No. 200680048634.8). By designing the microlens array and the micro-pattern array and their arrangement and combination, a variety of visual effects can be realized: 1) micro-pattern magnification: the micro-pattern that is not visible in the original is enlarged to be directly observable by the naked eye; 2) orthogonal movement: ie along When shaking in a certain direction, the observed macro image moves in a direction perpendicular to it; 3) stereoscopic effect: the observed macro image has a stereoscopic effect that floats or sinks on the paper surface; 4) motion deformation: the observed macro image Changes in size, shape, etc. may also occur during the movement. Moir zoom technology can achieve the above several visual effects on micro-patterns separately, and can also realize the combination of the above several visual effects at the same time. As a first-line technology that is easily recognized by the naked eye, it cannot be digital imaging and scanning. Copying, copying, printing equipment, etc.
美国专利和专利申请US5712731、US2005/0180020A1以及US2008/0037131A1中提出将微凸透镜阵列与微图形阵列结合应用于安全器 件,其中的微图形阵列是通过凹版印刷的方式得到,最小分辨率为5微米。主要制作方法是,在PET等柔性薄膜上涂布光刻胶,用带有微图文的凸版在光刻胶表面压印深度为数微米深的凹槽,通过刮涂方式将油墨填入凹槽,使得微图文显示相应的颜色。在这种微图文制作方法中,图像的色彩是通过在凹槽中填充颜色油墨获得的,微图文颜色单一,不能形成彩色化显示;微图文特征尺寸为数微米,一般印刷油墨颗粒为几十个微米,因此,需特殊制作的纳米级油墨才能作为填充颜色油墨;为了使得足够多的油墨被填入凹槽,提高微图文与背景之间的对比度,凹槽深度将大于3微米。需要制作大深宽比金属压印模板,在大幅面动态图像制作时,提高了其工艺难度。The application of a micro-convex lens array and a micro-pattern array to a security device is proposed in U.S. Patent No. 5,721, 273, US Patent Application Publication No. 2005/0180020 A1, and US 2008/0037131 A1. The micro-pattern array is obtained by gravure printing with a minimum resolution of 5 microns. The main production method is to apply a photoresist on a flexible film such as PET, and emboss a groove having a depth of several micrometers on the surface of the photoresist with a relief with a microtext, and fill the ink into the groove by a doctor blade method. So that the microtext displays the corresponding color. In the micro-text production method, the color of the image is obtained by filling the color ink in the groove, and the micro-text is single color, and cannot form a color display; the micro-text feature size is several micrometers, and the general printing ink particle is Dozens of micrometers, therefore, special-made nano-scale inks can be used as filling color inks; in order to make enough ink to be filled into the grooves, improve the contrast between the micro-text and the background, the groove depth will be greater than 3 microns . It is necessary to make a large aspect ratio metal embossing template, which improves the process difficulty in large-format dynamic image production.
因此,针对上述技术问题,有必要提供一种基于微印刷的彩色动态立体莫尔图像薄膜及其制备方法。Therefore, in view of the above technical problems, it is necessary to provide a micro-printing-based color dynamic stereoscopic moiré image film and a preparation method thereof.
发明内容Summary of the invention
有鉴于此,为了解决所述现有技术中的问题,本发明提供了一种基于微印刷的彩色动态立体莫尔图像薄膜及其制备方法。In view of this, in order to solve the problems in the prior art, the present invention provides a micro-printing-based color dynamic stereoscopic moiré image film and a preparation method thereof.
为了实现上述目的,本发明实施例提供的技术方案如下:In order to achieve the above objective, the technical solution provided by the embodiment of the present invention is as follows:
一种基于微印刷的彩色动态立体莫尔图像薄膜,所述莫尔图像薄膜包括透明基材层、位于透明基材层一侧的微透镜阵列层、以及位于透明基材层另一侧的微图形阵列层,所述微透镜阵列层包括若干阵列排布的微透镜,所述微图形阵列层包括若干套阵列排布且具有不同颜色的微图形,所述微透镜的阵列排布与微图形的阵列排布相匹配。A micro-printing-based color dynamic stereoscopic moiré image film comprising a transparent substrate layer, a microlens array layer on one side of the transparent substrate layer, and micro on the other side of the transparent substrate layer a pattern array layer, the microlens array layer comprising a plurality of array-arranged microlenses, the micro-pattern array layer comprising a plurality of sets of micro-patterns arranged in an array and having different colors, the micro-lens array arrangement and micro-patterns The array arrangement matches.
作为本发明的进一步改进,所述微透镜阵列层和微图形阵列层为正方形阵 列排列方式或六角形阵列排列方式。As a further improvement of the present invention, the microlens array layer and the micropattern array layer are square arrays Column arrangement or hexagon array arrangement.
作为本发明的进一步改进,所述微图形阵列层中微图形的整体尺寸为10μm~100μm,线宽为1μm~20μm。As a further improvement of the present invention, the micropattern in the micropattern array layer has an overall size of 10 μm to 100 μm and a line width of 1 μm to 20 μm.
作为本发明的进一步改进,所述莫尔图像薄膜的放大率为:As a further improvement of the present invention, the magnification of the moiré image film is:
Figure PCTCN2015075480-appb-000001
Figure PCTCN2015075480-appb-000001
其中,微透镜阵列与微图形阵列的周期比为r,相互之间的夹角为θ。The period ratio of the microlens array to the micro-pattern array is r, and the angle between them is θ.
作为本发明的进一步改进,所述微透镜阵列与微图形阵列的周期比r为1时,所述莫尔图像薄膜的放大率为:As a further improvement of the present invention, when the period ratio r of the microlens array and the micropattern array is 1, the magnification of the moiré image film is:
Figure PCTCN2015075480-appb-000002
Figure PCTCN2015075480-appb-000002
作为本发明的进一步改进,所述莫尔图像薄膜形成的莫尔图像移动的周期为:As a further improvement of the present invention, the period of movement of the moiré image formed by the moiré image film is:
Figure PCTCN2015075480-appb-000003
Figure PCTCN2015075480-appb-000003
其中,微透镜阵列的周期为a,微图形阵列的周期为b,微透镜阵列和微图形之间的距离为h,偏离垂直方向的观察角度为Ф。The period of the microlens array is a, the period of the micropattern array is b, the distance between the microlens array and the micropattern is h, and the angle of observation from the vertical direction is Ф.
相应地,一种基于微印刷的彩色动态立体莫尔图像薄膜的制备方法,所述方法包括:Correspondingly, a method for preparing a color dynamic stereoscopic moiré image film based on micro-printing, the method comprising:
S1、提供一透明基材层;S1, providing a transparent substrate layer;
S2、在透明基材层一侧制备微透镜阵列层,所述微透镜阵列层包括若干阵 列排布的微透镜;S2, preparing a microlens array layer on a side of the transparent substrate layer, the microlens array layer comprising a plurality of arrays Arranged microlenses;
S3、在透明基材层另一侧制备微图形阵列层,所述微图形阵列层包括若干套阵列排布且具有不同颜色的微图形,所述微透镜的阵列排布与微图形的阵列排布相匹配。S3, preparing a micro-pattern array layer on the other side of the transparent substrate layer, the micro-pattern array layer comprising a plurality of sets of micro-patterns arranged in an array and having different colors, the array arrangement of the micro-lenses and the array of micro-patterns The cloth matches.
作为本发明的进一步改进,所述步骤S3具体为:As a further improvement of the present invention, the step S3 is specifically:
将金属掩膜版放置于透明基材层上,并进行对准,金属掩膜版上包括若干阵列排布的镂空微图形结构;The metal mask is placed on the transparent substrate layer and aligned, and the metal mask comprises a plurality of arrayed hollow micro-pattern structures;
在金属掩膜版的一端倒入油墨,用刮板在金属掩膜版的油墨部位施加一定压力,同时朝金属掩膜版另一端移动,油墨在移动中被刮板从镂空微图形结构挤压到透明基材层上,形成阵列排布的微图形;The ink is poured into one end of the metal mask, and a certain pressure is applied to the ink portion of the metal mask by the scraper while moving toward the other end of the metal mask, and the ink is squeezed from the hollow micro-pattern structure by the scraper during the movement. Forming a micropattern of the array on the transparent substrate layer;
重复上述步骤,在透明基材层上形成若干套阵列排布且具有不同颜色的微图形。The above steps are repeated to form a plurality of sets of arrays of micropatterns having different colors on the transparent substrate layer.
作为本发明的进一步改进,所述金属掩膜版的制备方法具体为:As a further improvement of the present invention, the preparation method of the metal mask is specifically:
在金属衬底上均匀涂敷光刻胶或光刻干膜;Applying a photoresist or a photolithographic dry film uniformly on a metal substrate;
通过激光直写或光掩膜曝光,经过显影后形成浮雕型微图形结构;By laser direct writing or photomask exposure, after development, an embossed micro-pattern structure is formed;
通过金属电铸工艺,在金属衬底露底导电部分的表面形成金属沉积层;Forming a metal deposition layer on the surface of the conductive portion of the metal substrate by a metal electroforming process;
去除光刻胶,并将金属沉积层从金属衬底上分离,形成具有镂空微图形结构的金属掩膜版。The photoresist is removed and the metal deposition layer is separated from the metal substrate to form a metal mask having a hollow micro-pattern structure.
作为本发明的进一步改进,所述金属掩膜版的厚度为5um~100um。 As a further improvement of the present invention, the metal mask has a thickness of 5 um to 100 um.
作为本发明的进一步改进,所述金属掩膜版的材料为Ni、Cu、Ni-Co合金、或Fe-Ni合金。As a further improvement of the present invention, the material of the metal mask is Ni, Cu, Ni-Co alloy, or Fe-Ni alloy.
作为本发明的进一步改进,所述金属掩膜版上设置有对位标志,透明基材层和金属掩膜版采用CCD或者机械套位对准。As a further improvement of the present invention, the metal mask is provided with a registration mark, and the transparent substrate layer and the metal mask are aligned by CCD or mechanical sleeve.
本发明具有以下有益效果:The invention has the following beneficial effects:
莫尔图像薄膜所形成的莫尔图像具有彩色、动态、和立体的特性,同时保留了水平视差和垂直视差,可以显示出清晰的彩色三维动态图像,不仅提供识别的效果,同时也将进一步增加防伪产品的制造难度,使得观察者在任何光环境下,不需要特殊的观察技巧就可以观察到彩色三维动态图形。The moiré image formed by the moiré image film has color, dynamic, and stereoscopic characteristics, while retaining horizontal parallax and vertical parallax, and can display clear color three-dimensional moving images, which not only provides recognition effect, but also further increases The difficulty in manufacturing the anti-counterfeiting product allows the observer to observe the color three-dimensional dynamic graphic without any special observation skills in any light environment.
莫尔图像薄膜制备方便,微图形印刷成本低且分辨率高;金属掩膜版制作方便。The Moir image film is easy to prepare, the micro-pattern printing cost is low and the resolution is high; the metal mask is easy to manufacture.
附图说明DRAWINGS
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明中记载的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a few embodiments described in the present invention, and other drawings can be obtained from those skilled in the art without any inventive effort.
图1为本发明中一具体实施方式中莫尔图像薄膜的结构示意图;1 is a schematic structural view of a moiré image film according to an embodiment of the present invention;
图2a、2b分别为本发明一具体实施方式中微图形阵列层和微透镜阵列的结构示意图;2a and 2b are schematic structural views of a micro-pattern array layer and a microlens array according to an embodiment of the present invention;
图3a~3f为本发明一具体实施方式中莫尔图像薄膜的制备方法工艺流程图; 3a-3f are process flow diagrams of a method for preparing a moiré image film according to an embodiment of the present invention;
图4a、4b分别为本发明一具体实施方式中第一金属掩膜版和第二金属掩膜版的结构示意图;4a and 4b are schematic structural views of a first metal mask and a second metal mask, respectively, according to an embodiment of the present invention;
图5a~5d为本发明一具体实施方式中金属掩膜版的制备方法工艺流程图。5a-5d are process flow diagrams of a method for preparing a metal mask according to an embodiment of the present invention.
具体实施方式detailed description
以下将结合附图所示的具体实施方式对本发明进行详细描述。但这些实施方式并不限制本发明,本领域的普通技术人员根据这些实施方式所做出的结构、方法、或功能上的变换均包含在本发明的保护范围内。The invention will be described in detail below in conjunction with the specific embodiments shown in the drawings. However, the embodiments are not intended to limit the invention, and the structural, method, or functional changes made by those skilled in the art in accordance with the embodiments are included in the scope of the present invention.
本发明公开了一种基于微印刷的彩色动态立体莫尔图像薄膜,包括透明基材层、位于透明基材层一侧的微透镜阵列层、以及位于透明基材层另一侧的微图形阵列层,微透镜阵列层包括若干阵列排布的微透镜,微图形阵列层包括若干套阵列排布且具有不同颜色的微图形,微透镜的阵列排布与微图形的阵列排布相匹配。The invention discloses a micro-printing color dynamic stereoscopic moiré image film, comprising a transparent substrate layer, a microlens array layer on one side of the transparent substrate layer, and a micro-pattern array on the other side of the transparent substrate layer. The layer, the microlens array layer comprises a plurality of array-arranged microlenses, the micro-pattern array layer comprising a plurality of sets of micro-patterns arranged in an array and having different colors, the array arrangement of the micro-lenses being matched with the array arrangement of the micro-patterns.
如图1所示,在本发明的一具体实施方式中,莫尔图像薄膜包括透明基材层1、微透镜阵列层2及微图形阵列层3,其中,微透镜阵列层包括若干阵列排布的微透镜21,微图形阵列层包括若干阵列排布的第一微图形31及第二微图形32,第一微图形31和第二微图形32具有不同的颜色。As shown in FIG. 1, in a specific embodiment of the present invention, a moiré image film includes a transparent substrate layer 1, a microlens array layer 2, and a micro-pattern array layer 3, wherein the microlens array layer includes a plurality of array arrangements. The microlens 21, the micro-pattern array layer comprises a plurality of arrays of first micro-patterns 31 and second micro-patterns 32, the first micro-patterns 31 and the second micro-patterns 32 having different colors.
本实施方式中莫尔图像薄膜所形成的莫尔图像不但具有立体、动态的效果,还能实现彩色化,以下对莫尔图像薄膜进行详细说明。In the present embodiment, the moiré image formed by the moiré image film not only has a stereoscopic and dynamic effect, but also can be colored, and the moiré image film will be described in detail below.
微透镜微图形组合的莫尔图像薄膜同时保留了水平视差和垂直视差,保证观察角大,使得观察者在任何光环境下,不需要特殊的观察技巧就可以观察到三维彩色图形。要显示清晰的三维图像,微透镜与微图形必须要严格匹配和密 合,在其他实施方式中微图形的颜色不限于两套。The moiré image film combined with the microlens micro-pattern retains both horizontal parallax and vertical parallax, ensuring a large viewing angle, allowing the observer to observe three-dimensional color patterns without any special observation techniques in any light environment. To display clear 3D images, microlenses and micropatterns must be closely matched and dense In other embodiments, the color of the micropattern is not limited to two sets.
本实施方式中微图形的结构与微透镜的结构相匹配。微透镜列阵层的排列方式有两种,即正方形排列方式、或六角形排列方式。微图形的阵列排布与相应的微透镜阵列排布相对应。The structure of the micropattern in this embodiment matches the structure of the microlens. There are two ways of arranging the microlens array layers, that is, a square arrangement or a hexagonal arrangement. The array arrangement of micropatterns corresponds to the corresponding microlens array arrangement.
本实施方式中莫尔图像薄膜的放大率为:The magnification of the moiré image film in this embodiment is:
Figure PCTCN2015075480-appb-000004
Figure PCTCN2015075480-appb-000004
其中,微透镜阵列与微图形阵列的周期比为r,相互之间的夹角为θ。The period ratio of the microlens array to the micro-pattern array is r, and the angle between them is θ.
微图形阵列层中微图形的整体尺寸为10μm~100μm,线宽为1μm~20μm。根据上述公式,微图形阵列经过微透镜阵列放大,图形放大率M为20~∞。当r=1时,图形放大率的计算公式为The micropattern in the micropattern array layer has an overall size of 10 μm to 100 μm and a line width of 1 μm to 20 μm. According to the above formula, the micro-pattern array is enlarged by the microlens array, and the pattern magnification M is 20 ∞. When r=1, the formula for calculating the magnification of the graph is
Figure PCTCN2015075480-appb-000005
Figure PCTCN2015075480-appb-000005
当θ=0.1°时,根据上述公式图形放大率M为573倍。优选地,微图形高度为5μm~100μm,如果微图形高20um,则莫尔放大后的图形大小为11.45mm,人们裸眼即可识别。When θ = 0.1°, the pattern magnification M is 573 times according to the above formula. Preferably, the micro-pattern height is 5 μm to 100 μm, and if the micro-pattern is 20 μm high, the Moir-amplified pattern size is 11.45 mm, which can be recognized by the naked eye.
当微透镜阵列与微图形阵列之间有一定距离时,由于观察角度变化会造成微图形阵列的移动。假设微透镜阵列周期为a,微图形阵列周期为b,微透镜阵列和微图形之间的距离为h(透明基材层的厚度),莫尔放大图像的周期为L,以偏离垂直方向Ф为观察角度时,莫尔图像薄膜形成的莫尔图像移动的周期为: When there is a certain distance between the microlens array and the micro-pattern array, the movement of the micro-pattern array is caused by the change in the viewing angle. Assuming that the period of the microlens array is a, the period of the micropattern array is b, the distance between the microlens array and the micropattern is h (the thickness of the transparent substrate layer), and the period of the magnified image is L, which deviates from the vertical direction. In order to observe the angle, the period of movement of the moiré image formed by the moiré image film is:
Figure PCTCN2015075480-appb-000006
Figure PCTCN2015075480-appb-000006
莫尔图像的动态效果,当图像周期越大,微透镜和微图形的间距h越大,微图形阵列的周期越小,动态效果越好。莫尔图像具有两种动态效果:The dynamic effect of the moiré image, the larger the image period, the larger the spacing h of the microlens and the micropattern, the smaller the period of the micropattern array, the better the dynamic effect. Mohr images have two dynamic effects:
1)若微图形阵列和微透镜阵列的排列方向相同,排列周期不同,观察者变化视角,则会看到莫尔放大图像动感方向与观察者移动的方向相同或相反。1) If the arrangement direction of the micro-pattern array and the microlens array is the same, the arrangement period is different, and the observer changes the viewing angle, the direction of motion of the Moir magnified image is the same or opposite to the direction in which the observer moves.
2)若微图形阵列和微透镜周期相同,但之间有一个小的夹角θ,当眼睛纵向移动时,莫尔图像横向移动,当眼睛横向移动时,莫尔图像纵向移动。2) If the micro-pattern array and the microlens cycle are the same, but have a small angle θ between them, the moiré image moves laterally when the eye moves longitudinally, and the moiré image moves longitudinally when the eye moves laterally.
立体效应是由于观察时的双眼视差形成。当微图形周期小于微透镜周期时,产生图形下沉的效果,当微图形周期大于微透镜周期时,产生图形上浮的效果,这些上浮下沉的莫尔放大图像即形成三维效果。The steric effect is due to the formation of binocular parallax at the time of observation. When the micro-pattern period is smaller than the micro-lens period, the effect of pattern sinking is generated. When the micro-pattern period is larger than the micro-lens period, the effect of the pattern floating is generated, and the moire-magnified images of the floating and sinking form a three-dimensional effect.
参图2a、2b所示分别为本发明一具体实施方式中微图形阵列层和微透镜阵列的结构示意图。微图形阵列层中第一微图形31为具有第一颜色且阵列排布的太阳微图形,第二微图形32为具有第二颜色且阵列排布的月牙微图形,微透镜阵列层2包括若干具有相应阵列排布的微透镜21。2a and 2b are respectively schematic structural views of a micro-pattern array layer and a microlens array according to an embodiment of the present invention. The first micro-pattern 31 in the micro-pattern array layer is a solar micro-pattern having a first color and arranged in an array, and the second micro-pattern 32 is a crescent micro-pattern having a second color and arranged in an array, and the micro-lens array layer 2 includes a plurality of Microlenses 21 having a corresponding array arrangement.
具有第一颜色的太阳微图形、和具有第二颜色的月牙微图形整体尺寸为10μm~100μm,线宽为1μm~20μm。根据上述公式,微图形阵列经过微透镜阵列放大,可以用裸眼观察。The sun micropattern having the first color and the crescent micropattern having the second color have an overall size of 10 μm to 100 μm and a line width of 1 μm to 20 μm. According to the above formula, the micro-pattern array is magnified by the microlens array and can be observed with the naked eye.
本发明中莫尔图像薄膜的制备方法具体包括:The preparation method of the moiré image film in the invention specifically includes:
S1、提供一透明基材层; S1, providing a transparent substrate layer;
S2、在透明基材层一侧制备微透镜阵列层,所述微透镜阵列层包括若干阵列排布的微透镜;S2, preparing a microlens array layer on a side of the transparent substrate layer, the microlens array layer comprising a plurality of microlenses arranged in an array;
S3、在透明基材层另一侧制备微图形阵列层,所述微图形阵列层包括若干套阵列排布且具有不同颜色的微图形,所述微透镜的阵列排布与微图形的阵列排布相匹配。S3, preparing a micro-pattern array layer on the other side of the transparent substrate layer, the micro-pattern array layer comprising a plurality of sets of micro-patterns arranged in an array and having different colors, the array arrangement of the micro-lenses and the array of micro-patterns The cloth matches.
其中步骤S3具体为:Step S3 is specifically as follows:
将金属掩膜版放置于透明基材层上,并进行对准,金属掩膜版上包括若干阵列排布的镂空微图形结构;The metal mask is placed on the transparent substrate layer and aligned, and the metal mask comprises a plurality of arrayed hollow micro-pattern structures;
在金属掩膜版的一端倒入油墨,用刮板在金属掩膜版的油墨部位施加一定压力,同时朝金属掩膜版另一端移动,油墨在移动中被刮板从镂空微图形结构挤压到透明基材层上,形成阵列排布的微图形;The ink is poured into one end of the metal mask, and a certain pressure is applied to the ink portion of the metal mask by the scraper while moving toward the other end of the metal mask, and the ink is squeezed from the hollow micro-pattern structure by the scraper during the movement. Forming a micropattern of the array on the transparent substrate layer;
重复上述步骤,在透明基材层上形成若干套阵列排布且具有不同颜色的微图形。The above steps are repeated to form a plurality of sets of arrays of micropatterns having different colors on the transparent substrate layer.
以下结合图3a~3f所示,对本发明具体实施方式中莫尔图像薄膜的制备方法进行详细说明。The preparation method of the moiré image film in the specific embodiment of the present invention will be described in detail below with reference to Figs. 3a to 3f.
首先,提供一透明基材层1,在透明基材层一侧制备阵列排布的微透镜21,形成微透镜阵列层。First, a transparent substrate layer 1 is provided, and array-arranged microlenses 21 are prepared on the transparent substrate layer side to form a microlens array layer.
利用金属掩膜版微图形部分透油墨,非微图形部分不透墨的基本原理进行印刷。The basic principle of the micro-pattern part of the metal mask is used to transmit ink, and the non-micro-pattern part is not ink-permeable.
参图3a所示,将第一金属掩膜版41放置于透明基材层1上,并进行对准, 第一金属掩膜版41上包括若干阵列排布的第一镂空微图形结构;As shown in FIG. 3a, the first metal mask 41 is placed on the transparent substrate layer 1 and aligned. The first metal mask 41 includes a plurality of first hollow micro-pattern structures arranged in an array;
参图3a、3b所示,在第一金属掩膜版41的一端倒入具有第一颜色的第一油墨51,用刮板6在第一金属掩膜版的第一油墨部位施加一定压力,同时朝第一金属掩膜版41另一端移动,第一油墨51在移动中被刮板6从第一镂空微图形结构挤压到透明基材层1上。由于油墨的粘性作用而使印迹固着在一定范围之内,印刷过程中刮板6始终与第一金属掩膜版41和透明基材层1呈线接触。As shown in FIGS. 3a and 3b, a first ink 51 having a first color is poured into one end of the first metal mask 41, and a certain pressure is applied to the first ink portion of the first metal mask by the squeegee 6. At the same time, moving toward the other end of the first metal mask 41, the first ink 51 is pressed by the squeegee 6 from the first hollow micro-pattern structure onto the transparent substrate layer 1 during the movement. Due to the viscous action of the ink, the print is fixed within a certain range, and the squeegee 6 is always in line contact with the first metal mask 41 and the transparent substrate layer 1 during printing.
当刮板6刮过整个版面后抬起,同时第一金属掩膜版也抬起,并将第一油墨51轻刮回初始位置,即可形成图3c所示的阵列排布的第一微图形31。When the squeegee 6 is scraped over the entire layout and lifted up, and the first metal mask is lifted up, and the first ink 51 is lightly scraped back to the initial position, the first micro-array of the array arrangement shown in FIG. 3c can be formed. Figure 31.
同样地,参图3d~3f所示,通过第二金属掩膜版42、具有第二颜色的第二油墨52和刮板6同样可以形成阵列排布的第二微图形32,其印刷原理与第一微图形的印刷原理相同,在此不再进行赘述。与第一微图形不同的是,第一金属掩膜版41为紧贴着透明基材层1放置,而第二金属掩膜版42为紧贴着第一微图形放置,距离透明基材层1有一定的距离。Similarly, as shown in FIGS. 3d to 3f, the second micro-pattern 32 of the array arrangement can also be formed by the second metal mask 42 and the second ink 52 having the second color and the squeegee 6, the printing principle and The printing principle of the first micro-pattern is the same and will not be described here. Different from the first micro-pattern, the first metal mask 41 is placed in close contact with the transparent substrate layer 1, and the second metal mask 42 is placed in close contact with the first micro-pattern, away from the transparent substrate layer. 1 has a certain distance.
参图4a、4b所示为本发明一具体实施方式中具有太阳微图形的第一金属掩膜版41和具有月牙微图形的第二金属掩膜版42的结构示意图。在其他实施方式中微图形也可以为其他图形或文字或其组合。4a and 4b are schematic views showing the structure of a first metal mask 41 having a solar micropattern and a second metal mask 42 having a crescent micropattern in an embodiment of the present invention. In other embodiments, the micro-patterns can also be other graphics or text or a combination thereof.
图4a、4b中黑色部分为遮挡层,微图形为镂空部分。镂空部分的整体尺寸为5um~100um,线宽为0.5μm~20μm。金属掩膜版的厚度5μm~100μm,且金属掩膜版上具有十字对位标记,用于在后期制作中实现精密对位。 In Figures 4a, 4b, the black portion is the occlusion layer and the micro-pattern is the hollow portion. The overall size of the hollow portion is 5 um to 100 um, and the line width is 0.5 μm to 20 μm. The thickness of the metal mask is 5 μm to 100 μm, and the metal mask has a cross-alignment mark for precise alignment in post-production.
印刷微图形时,通过第一金属掩膜版和第二金属掩膜版上的十字对位标记,采用CCD或者机械套位对准,从而实现具有较高对比度的彩色微图形阵列。When the micro-pattern is printed, the cross-alignment mark on the first metal mask and the second metal mask is aligned by CCD or mechanical sleeve, thereby realizing a color micro-pattern array with higher contrast.
本发明中的金属掩膜版采用金属沉积生长法,具体步骤为:The metal mask in the present invention adopts a metal deposition growth method, and the specific steps are as follows:
参图5a所示,在金属衬底401上均匀涂敷光刻胶或光刻干膜402,光刻胶可以为负性或者正性,厚度为5um~100um;As shown in FIG. 5a, a photoresist or a photolithographic dry film 402 is uniformly coated on the metal substrate 401, and the photoresist may be negative or positive, and has a thickness of 5 um to 100 um;
通过激光直写或光掩膜曝光,经过显影后形成图5b所示的浮雕型微图形结构;By laser direct writing or photomask exposure, after development, the embossed micro-pattern structure shown in FIG. 5b is formed;
参图5c所示,通过金属电铸工艺,在金属衬底401露底导电部分的表面形成金属沉积层403;Referring to Figure 5c, through the metal electroforming process, a metal deposition layer 403 is formed on the surface of the metal substrate 401 exposed bottom conductive portion;
去除光刻胶或光刻干膜,并将金属沉积层403从金属衬底401上分离,即可形成图5d所示的具有镂空微图形结构的金属掩膜版。The photoresist or the photolithographic dry film is removed, and the metal deposition layer 403 is separated from the metal substrate 401 to form a metal mask having a hollow micro-pattern structure as shown in FIG. 5d.
激光直写光刻系统的图形分辨率可达0.2um-0.5um,因此,本发明可以实现1um以上线宽的微图形曝光。因此,上述金属掩模板的微图形线宽可达1微米,整体尺寸能够达到10微米。优选地,在本实施方式中金属掩模板的厚度5um-100um,材料为Ni、Cu、Ni-Co合金、或Fe-Ni合金。The laser direct writing lithography system has a graphic resolution of 0.2 um to 0.5 um. Therefore, the present invention can realize micro-pattern exposure of a line width of 1 um or more. Therefore, the above-mentioned metal mask has a micro-pattern line width of up to 1 micrometer and an overall size of 10 micrometers. Preferably, in the present embodiment, the thickness of the metal mask is 5 um to 100 um, and the material is Ni, Cu, Ni-Co alloy, or Fe-Ni alloy.
本发明能够应用于防伪技术中,新型的防伪技术在视觉上要求:彩色、动感、多维、多通道和分层效果。The invention can be applied to anti-counterfeiting technology, and the new anti-counterfeiting technology visually requires: color, dynamic, multi-dimensional, multi-channel and layering effects.
若以传统的印刷方式制作彩色微图形,以Luscher公司的大幅面丝网和胶印版的顶级成像系统JetScreen2000为例,其具有256个喷嘴构成的喷墨印刷 头,可提供700dpi分辨率图像的输出;Autoprint Srl.公司的子公司Amanda推出新型的热敏喷墨打印机DigitAll,可实现720×720dpi的分辨率图像输出;在数字丝网印刷方面,Scitex的新型超宽幅面Grandjet印刷机分辨率为370×370dpi;Nur公司的Fresco印刷机可达到720dpi的分辨率。因此,以目前打印或印刷的技术水平,不能实现高精度(位置误差小于1%)和高分辨率(10μm)的微图形制作,从而不具有实现莫尔放大的精度,而且低效的打印方式也很难实现微图形的批量化、低成本制作。If you use traditional printing methods to produce color micro-patterns, take the example of Luscher's large-format screen and offset printing system JetScreen2000, which has 256 nozzles for inkjet printing. Head, can provide output of 700dpi resolution image; Amanda, a subsidiary of Autoprint Srl., introduces the new thermal inkjet printer DigitAll, which can achieve 720×720dpi resolution image output; in digital screen printing, Scitex's new type The ultra-wide format Grandjet press has a resolution of 370 x 370 dpi; Nur's Fresco press can achieve a resolution of 720 dpi. Therefore, at the current level of printing or printing, high-precision (position error less than 1%) and high-resolution (10 μm) micro-patterning cannot be achieved, so that the accuracy of moiré amplification is not achieved, and the printing method is inefficient. It is also difficult to achieve mass production and low-cost production of micro graphics.
与现有技术相比,本发明具有以下有益效果:Compared with the prior art, the present invention has the following beneficial effects:
莫尔图像薄膜所形成的莫尔图像具有彩色、动态、和立体的特性,同时保留了水平视差和垂直视差,可以显示出清晰的彩色三维动态图像,不仅提供识别的效果,同时也将进一步增加防伪产品的制造难度,使得观察者在任何光环境下,不需要特殊的观察技巧就可以观察到彩色三维动态图形。The moiré image formed by the moiré image film has color, dynamic, and stereoscopic characteristics, while retaining horizontal parallax and vertical parallax, and can display clear color three-dimensional moving images, which not only provides recognition effect, but also further increases The difficulty in manufacturing the anti-counterfeiting product allows the observer to observe the color three-dimensional dynamic graphic without any special observation skills in any light environment.
莫尔图像薄膜制备方便,微图形印刷成本低且分辨率高(微图形整体尺寸5um~100um,线宽0.5μm~20μm);金属掩膜版制作方便。The Moir image film is easy to prepare, the micro-pattern printing cost is low and the resolution is high (the overall size of the micro-pattern is 5um~100um, the line width is 0.5μm~20μm); the metal mask is easy to manufacture.
对于本领域技术人员而言,显然本发明不限于上述示范性实施例的细节,而且在不背离本发明的精神或基本特征的情况下,能够以其他的具体形式实现本发明。因此,无论从哪一点来看,均应将实施例看作是示范性的,而且是非限制性的,本发明的范围由所附权利要求而不是上述说明限定,因此旨在将落在权利要求的等同要件的含义和范围内的所有变化囊括在本发明内。不应将权利要求中的任何附图标记视为限制所涉及的权利要求。It is apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the invention is defined by the appended claims instead All changes in the meaning and scope of equivalent elements are included in the present invention. Any reference signs in the claims should not be construed as limiting the claim.
此外,应当理解,虽然本说明书按照实施方式加以描述,但并非每个实施 方式仅包含一个独立的技术方案,说明书的这种叙述方式仅仅是为清楚起见,本领域技术人员应当将说明书作为一个整体,各实施例中的技术方案也可以经适当组合,形成本领域技术人员可以理解的其他实施方式。 Moreover, it should be understood that although this description is described in terms of embodiments, not every implementation The method includes only one independent technical solution, and the description of the specification is merely for the sake of clarity, and the technical solutions in the embodiments may be combined as appropriate, and the technical solutions in the respective embodiments may be combined as appropriate to form a person skilled in the art. Other embodiments that can be understood.

Claims (12)

  1. 一种基于微印刷的彩色动态立体莫尔图像薄膜,其特征在于,所述莫尔图像薄膜包括透明基材层、位于透明基材层一侧的微透镜阵列层、以及位于透明基材层另一侧的微图形阵列层,所述微透镜阵列层包括若干阵列排布的微透镜,所述微图形阵列层包括若干套阵列排布且具有不同颜色的微图形,所述微透镜的阵列排布与微图形的阵列排布相匹配。A micro-printing color dynamic stereoscopic moiré image film, characterized in that the moiré image film comprises a transparent substrate layer, a microlens array layer on one side of the transparent substrate layer, and a transparent substrate layer a micro-pattern array layer on one side, the microlens array layer comprising a plurality of array-arranged microlenses, the micro-pattern array layer comprising a plurality of sets of micro-patterns arranged in an array and having different colors, the array of microlenses The cloth matches the array arrangement of the micro graphics.
  2. 根据权利要求1所述的莫尔图像薄膜,其特征在于,所述微透镜阵列层和微图形阵列层为正方形阵列排列方式或六角形阵列排列方式。The moiré image film according to claim 1, wherein the microlens array layer and the micropattern array layer are in a square array arrangement or a hexagon array arrangement.
  3. 根据权利要求1所述的莫尔图像薄膜,其特征在于,所述微图形阵列层中微图形的整体尺寸为10μm~100μm,线宽为1μm~20μm。The moiré image film according to claim 1, wherein the micropattern in the micropattern array layer has an overall size of 10 μm to 100 μm and a line width of 1 μm to 20 μm.
  4. 根据权利要求1所述的莫尔图像薄膜,其特征在于,所述莫尔图像薄膜的放大率为:The moiré image film according to claim 1, wherein the magnification of the moiré image film is:
    Figure PCTCN2015075480-appb-100001
    Figure PCTCN2015075480-appb-100001
    其中,微透镜阵列与微图形阵列的周期比为r,相互之间的夹角为θ。The period ratio of the microlens array to the micro-pattern array is r, and the angle between them is θ.
  5. 根据权利要求4所述的莫尔图像薄膜,其特征在于,所述微透镜阵列与微图形阵列的周期比r为1时,所述莫尔图像薄膜的放大率为:The moiré image film according to claim 4, wherein when the period ratio r of the microlens array and the micropattern array is 1, the magnification of the moiré image film is:
    Figure PCTCN2015075480-appb-100002
    Figure PCTCN2015075480-appb-100002
  6. 根据权利要求1所述的莫尔图像薄膜,其特征在于,所述莫尔图像薄 膜形成的莫尔图像移动的周期为:The moiré image film according to claim 1, wherein said moiré image is thin The period of movement of the moiré image formed by the film is:
    Figure PCTCN2015075480-appb-100003
    Figure PCTCN2015075480-appb-100003
    其中,微透镜阵列的周期为a,微图形阵列的周期为b,微透镜阵列和微图形之间的距离为h,偏离垂直方向的观察角度为Ф。The period of the microlens array is a, the period of the micropattern array is b, the distance between the microlens array and the micropattern is h, and the angle of observation from the vertical direction is Ф.
  7. 一种如权利要求1所述的基于微印刷的彩色动态立体莫尔图像薄膜的制备方法,其特征在于,所述方法包括:A method of fabricating a microprint-based color dynamic stereoscopic moiré image film according to claim 1, wherein the method comprises:
    S1、提供一透明基材层;S1, providing a transparent substrate layer;
    S2、在透明基材层一侧制备微透镜阵列层,所述微透镜阵列层包括若干阵列排布的微透镜;S2, preparing a microlens array layer on a side of the transparent substrate layer, the microlens array layer comprising a plurality of microlenses arranged in an array;
    S3、在透明基材层另一侧制备微图形阵列层,所述微图形阵列层包括若干套阵列排布且具有不同颜色的微图形,所述微透镜的阵列排布与微图形的阵列排布相匹配。S3, preparing a micro-pattern array layer on the other side of the transparent substrate layer, the micro-pattern array layer comprising a plurality of sets of micro-patterns arranged in an array and having different colors, the array arrangement of the micro-lenses and the array of micro-patterns The cloth matches.
  8. 根据权利要求7所述的制备方法,其特征在于,所述步骤S3具体为:The preparation method according to claim 7, wherein the step S3 is specifically:
    将金属掩膜版放置于透明基材层上,并进行对准,金属掩膜版上包括若干阵列排布的镂空微图形结构;The metal mask is placed on the transparent substrate layer and aligned, and the metal mask comprises a plurality of arrayed hollow micro-pattern structures;
    在金属掩膜版的一端倒入油墨,用刮板在金属掩膜版的油墨部位施加一定压力,同时朝金属掩膜版另一端移动,油墨在移动中被刮板从镂空微图形结构挤压到透明基材层上,形成阵列排布的微图形;The ink is poured into one end of the metal mask, and a certain pressure is applied to the ink portion of the metal mask by the scraper while moving toward the other end of the metal mask, and the ink is squeezed from the hollow micro-pattern structure by the scraper during the movement. Forming a micropattern of the array on the transparent substrate layer;
    重复上述步骤,在透明基材层上形成若干套阵列排布且具有不同颜色的微 图形。Repeat the above steps to form several sets of arrays on the transparent substrate layer and have different colors Graphics.
  9. 根据权利要求8所述的制备方法,其特征在于,所述金属掩膜版的制备方法具体为:The preparation method according to claim 8, wherein the preparation method of the metal mask is specifically:
    在金属衬底上均匀涂敷光刻胶或光刻干膜;Applying a photoresist or a photolithographic dry film uniformly on a metal substrate;
    通过激光直写或光掩膜曝光,经过显影后形成浮雕型微图形结构;By laser direct writing or photomask exposure, after development, an embossed micro-pattern structure is formed;
    通过金属电铸工艺,在金属衬底露底导电部分的表面形成金属沉积层;Forming a metal deposition layer on the surface of the conductive portion of the metal substrate by a metal electroforming process;
    去除光刻胶,并将金属沉积层从金属衬底上分离,形成具有镂空微图形结构的金属掩膜版。The photoresist is removed and the metal deposition layer is separated from the metal substrate to form a metal mask having a hollow micro-pattern structure.
  10. 根据权利要求9所述的制备方法,其特征在于,所述金属掩膜版的厚度为5um~100um。The preparation method according to claim 9, wherein the metal mask has a thickness of 5 um to 100 um.
  11. 根据权利要求9所述的制备方法,其特征在于,所述金属掩膜版的材料为Ni、Cu、Ni-Co合金、或Fe-Ni合金。The preparation method according to claim 9, wherein the material of the metal mask is Ni, Cu, a Ni-Co alloy, or an Fe-Ni alloy.
  12. 根据权利要求8所述的制备方法,其特征在于,所述金属掩膜版上设置有对位标志,透明基材层和金属掩膜版采用CCD或者机械套位对准。 The preparation method according to claim 8, wherein the metal mask is provided with a registration mark, and the transparent substrate layer and the metal mask are aligned by a CCD or a mechanical sleeve.
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