WO2021218100A1 - 一种微镜动态光变膜 - Google Patents

一种微镜动态光变膜 Download PDF

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WO2021218100A1
WO2021218100A1 PCT/CN2020/126841 CN2020126841W WO2021218100A1 WO 2021218100 A1 WO2021218100 A1 WO 2021218100A1 CN 2020126841 W CN2020126841 W CN 2020126841W WO 2021218100 A1 WO2021218100 A1 WO 2021218100A1
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layer
micro
dielectric layer
color
graphic
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PCT/CN2020/126841
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English (en)
French (fr)
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朱昊枢
叶瑞
孙营春
左志成
任家安
陈林森
朱志坚
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苏州苏大维格科技集团股份有限公司
苏大维格(盐城)光电科技有限公司
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Publication of WO2021218100A1 publication Critical patent/WO2021218100A1/zh

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/02—Forms or constructions

Definitions

  • the utility model relates to the technical field of anti-counterfeiting, in particular to a dynamic optical variable film of a micromirror.
  • the existing dynamic security films are based on both sides of the substrate, with a micro lens layer on one side and a micro graphic layer on the other side.
  • the product presents a dynamic graphic effect, and the color is a fixed color, without discoloration effect, and low anti-counterfeiting force.
  • the purpose of the utility model is to provide a micro-mirror dynamic light-changing film with a color-changing effect.
  • the utility model provides a micro-mirror dynamic light variable film, which in turn includes a micro-lens array layer, a base film, an information layer with micro graphics, an upper medium layer, an intermediate medium layer, and a lower medium layer.
  • a micro-mirror dynamic light variable film which in turn includes a micro-lens array layer, a base film, an information layer with micro graphics, an upper medium layer, an intermediate medium layer, and a lower medium layer.
  • the refractive index of the upper dielectric layer and the lower dielectric layer are both greater than the refractive index of the intermediate dielectric layer.
  • the information layer is provided with at least one micro-image and text layer with micro-image and text information.
  • the micro-image and text layer has multiple layers, the micro-image and text of each layer are the same as those of the other layers. Correspondence staggered.
  • the micro-graphic layer is provided with a micro-graphic groove, and the micro-graphic groove forms the micro-graphic information, or the micro-graphic groove is filled with ink , The ink follows the shape of the micro-graphic groove to form the micro-graphic information.
  • the microlens array layer is provided with a plurality of microlenses of the same size, and the information layer is arranged near the focal plane of the microlenses.
  • the thickness of the upper dielectric layer is smaller than that of the middle dielectric layer, and the thickness of the lower dielectric layer is smaller than that of the middle dielectric layer.
  • the micromirror dynamic optical variable film further includes a color layer, the color layer is disposed on the side of the lower dielectric layer away from the intermediate dielectric layer, and the color layer is provided with at least one color area.
  • the micro-lens dynamic optical variable film further includes a dielectric protective layer, a transparent protective layer, a pressure-sensitive adhesive layer, and a release paper layer
  • the dielectric protective layer is disposed on the micro lens array layer away from the
  • the transparent protective layer is disposed on the side of the medium protective layer away from the microlens array layer
  • the pressure-sensitive adhesive layer is disposed on a side of the color layer away from the lower dielectric layer.
  • the release paper layer is arranged on the side of the pressure-sensitive adhesive layer away from the color layer.
  • the micromirror dynamic light-changing film provided by the utility model forms a color-changing structure that changes color with the change of the observation angle through the upper dielectric layer, the middle dielectric layer, and the lower dielectric layer, so that the micromirror dynamic light When the variable film rotates, it has the dual anti-counterfeiting effect of the dynamic zooming change of the micro-graphics and the color change, and the anti-counterfeiting force is extremely high.
  • Fig. 1 is a schematic diagram of the structure of the micro-mirror dynamic light-changing film according to the first embodiment of the present invention
  • FIG. 2 is a schematic diagram of the structure of the micro-mirror dynamic light change film according to the second embodiment of the present invention.
  • Fig. 3 is a schematic diagram of the structure of the micro-mirror dynamic light-changing film according to the third embodiment of the present invention.
  • the micro-mirror dynamic optical variable film provided in the first embodiment of the present invention includes a micro-lens array layer 12, a base film 11, an information layer 13, an upper dielectric layer 14, an intermediate dielectric layer 15, and a lower dielectric layer in sequence.
  • Layer 16 The information layer 13 is in contact with the upper dielectric layer 14, and the upper dielectric layer 14, the middle dielectric layer 15 and the lower dielectric layer 16 form a color-changing structure that changes color with the change of the viewing angle.
  • the microlens array layer 12 is provided with a plurality of microlenses of uniform size in a lattice arrangement or randomly arranged, and a base film 11 is provided on the lower surface of the microlens array layer 12.
  • the transparency of the base film 11 is relatively high to ensure that the information layer 13 provided on the lower surface of the base film 11 can be clearly seen through the base film 11.
  • the base film 11 is PET (Polyethylene terephthalate, polyethylene terephthalate), and an information layer 13 is provided on the lower surface of the base film 11.
  • the information layer 13 is provided with a micro-graphic information layer with micro-graphic information.
  • the micro-graphic layer is provided with a micro-graphic groove 50, and the micro-graphic groove 50 forms micro-graphic information.
  • the micro graphic information in the micro graphic layer is set near the focal plane of the micro lens, and the moiré magnification effect is formed by the micro lens, so that the micro graphic information observed through the micro lens array layer 12 is three-dimensional and dynamic. Enlarge to increase the anti-counterfeiting effect.
  • a color-changing structure is provided on the lower surface of the information layer 13, and the color-changing structure is a multilayer thin film resonance structure.
  • the structure is based on the principle of resonance to realize the expression of colors: standing wave resonance occurs when the incident wavelength changes at different observation angles to realize the color change, that is, the color changes as the observation angle changes.
  • the discoloration structure is specifically explained as follows.
  • the upper dielectric layer 14 and the lower dielectric layer 16 are prepared by a vacuum evaporation process or a vacuum sputtering process, and the intermediate dielectric layer 15 is prepared by a vacuum evaporation process or a vacuum sputtering process or a nano-coating method.
  • the upper dielectric layer 14 is prepared on the surface of the information layer 13 on the side with the micro-graphic information
  • the intermediate dielectric layer 15 is prepared on the lower surface of the upper dielectric layer 14
  • the lower dielectric layer 16 is prepared on the lower surface of the intermediate dielectric layer 15.
  • the material of the upper dielectric layer 14 is a high refractive index medium, such as titanium dioxide and zinc sulfide, with a thickness of 10-80 nm; the material of the upper dielectric layer 14 may also be metal, with a thickness of 6-10 nm.
  • the material of the intermediate dielectric layer 15 is a metal compound, such as magnesium fluoride, or metal or polymer, with a thickness of 150nm-2um;
  • the material of the lower dielectric layer 16 is a high refractive index medium, such as titanium dioxide, zinc sulfide, and its thickness It is 10-80 nm; the material of the lower dielectric layer 16 can also be metal, and its thickness is 10-50 nm.
  • the color expression is achieved by designing the upper dielectric layer 14, the middle dielectric layer 15 and the lower dielectric layer 16 with the materials of each layer or/and different thicknesses. As the thickness changes, the displayed color changes, and with the observation angle (incident The angle) changes, the color presented will also change.
  • the material of the upper dielectric layer 14 is metallic chromium, which is prepared by a vacuum evaporation process, and its thickness is 8nm; the surfaces on both sides of the upper dielectric layer 14 follow the shape of the information layer 13 in contact with the upper dielectric layer 14. The surface with the micro graphic information side.
  • the intermediate dielectric layer 15 is PMMA (Polymethyl methacrylat), which is prepared by nano-coating, and its thickness is 1 um; the upper surface of the intermediate dielectric layer 15 follows the shape of the information layer in contact with the upper dielectric layer 14 13 The surface on the side with the micro-graphic information, and the lower surface is flat.
  • the material of the lower dielectric layer 16 is metallic aluminum, and the thickness is 30 nm. Among them, the upper dielectric layer 14, the middle dielectric layer 15 and the lower dielectric layer 16 form a slab waveguide resonance structure with a color changing function, and the structure is specifically a Fabry-Perot cavity.
  • the refractive index of the upper dielectric layer 14 and the refractive index of the lower dielectric layer 16 are both greater than the refractive index of the intermediate dielectric layer 15.
  • the refractive index of the intermediate dielectric layer 15 is 1.38-1.51.
  • the product of this embodiment has the dual anti-counterfeiting effects of dynamic zooming change of micro-graphics and color change when rotating, and the anti-counterfeiting force is extremely high.
  • the micro-mirror dynamic optical variable film provided by the second embodiment of the present invention sequentially includes a micro-lens array layer 22, a base film 21, an information layer 23, an upper dielectric layer 24, an intermediate dielectric layer 25, and a lower dielectric layer. 26.
  • the information layer 23 is in contact with the upper dielectric layer 24, and the upper dielectric layer 24, the middle dielectric layer 25, and the lower dielectric layer 26 form a resonance structure that changes color with the change of the viewing angle.
  • the difference between the micro-mirror dynamic light-changing film of this embodiment and the above-mentioned first embodiment is that the micro-mirror dynamic light-changing film further includes a color layer 27.
  • the color layer 27 is arranged on the side of the lower dielectric layer 26 away from the intermediate dielectric layer 25.
  • the color of the color layer 27 is dark, such as black, deep purple, and deep blue; the thickness of the color layer 27 is 0.1 um to 20 um; preferably, the thickness of the color layer 27 is 1 um to 10 um.
  • the material of the color layer 27 is nano-scale ink, and the color of the color layer 27 is black.
  • each dielectric layer is prepared by a vacuum evaporation process. Therefore, the upper surface and the lower surface of each dielectric layer conform to the surface of the information layer 13 which is in contact with the upper dielectric layer 14 and has the micro-graphic information side.
  • the material of the upper dielectric layer 24 is zinc sulfide, the refractive index is 2.4, and the thickness is 10 nm; the material of the intermediate dielectric layer 25 is magnesium fluoride, the refractive index is 1.38, and the thickness is 200 nm.
  • the material of the lower dielectric layer 26 is titanium dioxide with a thickness of 30 nm.
  • the upper dielectric layer 24, the middle dielectric layer 25, and the lower dielectric layer 26 form a slab waveguide resonance structure. Together with the superposition of the color layer 27, the position of the resonance spectrum shifts, and the product exhibits complex color changes. When the observation angle changes, the resonance frequency will move, so that the colorful dynamic color-changing film of the present invention has a color-changing effect at the same time. Therefore, by superimposing the color layer 27 to absorb colors of different wavelengths, the wavelength of the final reflected light is changed instead of the color presented by the original resonance structure, thus achieving a strong (ie, darker color) and complex color change effect, thereby Enhance the sense of vision, and enhance the anti-counterfeiting effect.
  • the product of this embodiment has the dual anti-counterfeiting effects of dynamic zooming changes of micro-graphics and complex color changes when rotating, and the anti-counterfeiting strength is extremely high.
  • the micro-mirror dynamic optical variable film provided by the third embodiment of the present invention includes a micro-lens array layer 32, a base film 31, an information layer 33, an upper dielectric layer 34, an intermediate dielectric layer 35, and a lower dielectric layer in sequence. 36.
  • the information layer 33 is in contact with the upper dielectric layer 34, and the upper dielectric layer 34, the middle dielectric layer 35, and the lower dielectric layer 36 form a slab waveguide resonant structure that changes color as the viewing angle changes.
  • micro-mirror dynamic light-changing film of this embodiment further includes a dielectric protective layer 38, a transparent protective layer 39, a pressure-sensitive adhesive layer 310, and a release paper layer 311, and
  • the information layer 33 is provided with two micro-graphic layers.
  • the dynamic light change film of the micromirror of this embodiment will be described in detail below.
  • the two micro-graphic layers are the first micro-graphic layer 331 and the second micro-graphic layer 332; the first micro-graphic layer 331 is located on the lower surface of the base film 31, and the second micro-graphic layer 332 is laid on the first micro-graphic layer 331.
  • the thickness of the first micro-graphic layer 331 and the second micro-graphic layer 332 is set corresponding to the focal length of the micro lens, and the micro-graphic information in the two micro-graphic layers is correspondingly staggered. Therefore, the micro-mirror dynamic optical variable film has a variety of anti-counterfeiting functions, thereby enhancing the anti-counterfeiting ability.
  • the moiré magnification effect is formed by the micro lens, so that each micro graphic information forms a multi-layer dynamic three-dimensional anti-counterfeiting effect, thereby increasing the anti-counterfeiting effect.
  • the micro-graphic information of each micro-graphic layer observed through the micro-lens array layer 12 shows a partial or entire layout on the micro-mirror dynamic optically variable film.
  • the ink 60 is scraped at the micro-graphic groove 50 of the first micro-graphic layer 331, and the ink 60 follows the shape of the micro-graphic groove 50 to form micro-graphic information, so that the micro-graphic information has colors and increases prominence. sex.
  • the micro-graphic information of the second micro-graphic layer 332 is the micro-graphic groove 50.
  • the information layer 33 is provided with at least three micrograph and text layers, and the micrograph and text information arrangement positions of the micrograph and text layers are staggered with each other.
  • the micro-graphic information in each micro-graphic layer can be the same or different.
  • the micro-graphic information of the same micro-graphic layer can be a single type, or multiple combinations, such as a combination of graphics, text and images, or a single Kind of.
  • the dielectric protection layer 38 is arranged on the side of the microlens array layer 32 away from the base film 31, the transparent protection layer 39 is arranged on the side of the dielectric protection layer 38 away from the microlens array layer 32, and the pressure-sensitive adhesive layer 310 is arranged on the color layer 37 away from the base film 31.
  • the release paper layer 311 is disposed on the side of the pressure-sensitive adhesive layer 310 away from the color layer 37.
  • a transparent protective layer 39 is provided outside the dielectric protective layer 38.
  • the dielectric protective layer 38 protects the structure of the microlens array layer 32 from being damaged, and the transparent protective layer 39 meets the performance requirements of the product under the conditions of use.
  • the release paper layer 311 When in use, the release paper layer 311 is peeled off, and the pressure-sensitive adhesive layer 310 is attached to the use substrate.
  • the product provided by this embodiment is convenient to use; it has the effect of dynamically zooming in on images and texts and the effect of changing colors, and the anti-counterfeiting degree is extremely high.

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Abstract

一种微镜动态光变膜，依次包括微透镜阵列层（12）、基膜（11）、信息层（13）、上介质层（14）、中间介质层（15）和下介质层（16），信息层（13）与上介质层（14）接触，上介质层（14）、中间介质层（15）和下介质层（16）三者形成随观察角变化而呈现颜色变化的变色结构。通过上介质层（14）、中间介质层（15）和下介质层（16）三者形成随观察角变化而呈现颜色变化的变色结构，使微镜动态光变膜在转动时同时兼具微图形动态放大变化以及颜色发生变化的双重防伪效果。

Description

一种微镜动态光变膜
本申请要求了申请日为2020年04月29日，申请号为202020695385.9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。
技术领域
本实用新型涉及防伪技术领域，特别是涉及一种微镜动态光变膜。
背景技术
现代商品经济竞争激烈，不法分子受利益的驱使，纷纷假冒证券、有价票据、热销商品的商标、标识和包装等。随着科学技术的发展，制假者利用现代高科技手段向防伪特种印刷行业进行渗透。就目前我国的防伪市场而言，总体呈现出“防伪技术产品市场混乱，低性能的防伪产品低价竞争，高技术、高性能的防伪产品处境艰难”的局面。
现有的动态安全薄膜都是基于基材双面，一面是微透镜层，另一面是微图文层，产品呈现动态图文效果，而颜色为固定颜色，没有变色效果，防伪力度小。
前面的叙述在于提供一般的背景信息，并不一定构成现有技术。
实用新型内容
本实用新型的目的在于提供一种具有变色效果的微镜动态光变膜。
本实用新型提供一种微镜动态光变膜，依次包括微透镜阵列层、基膜、具有微图文的信息层、上介质层、中间介质层和下介质层，所述信息层与所述上介质层接触，所述上介质层、所述中间介质层和所述下介质层三者形成随观察角变化而呈现颜色变化的变色结构。
在其中一实施例中，所述上介质层、和所述下介质层的折射率均大于所述中间介质层的折射率。
在其中一实施例中，所述信息层至少设有一具有微图文信息的微图文层， 当所述微图文层具有多层时，每一层的微图文与其余层的微图文对应错开。
在其中一实施例中，所述微图文层设有微图文凹槽，所述微图文凹槽形成所述微图文信息，或，所述微图文凹槽中填设有油墨，所述油墨随形于所述微图文凹槽形成所述微图文信息。
在其中一实施例中，所述微透镜阵列层上设有多个大小一致的微透镜，所述信息层设置于所述微透镜的焦面附近。
在其中一实施例中，所述上介质层的厚度小于中间介质层，下介质层的厚度小于中间介质层。
在其中一实施例中，所述微镜动态光变膜还包括颜色层，所述颜色层设置在所述下介质层远离所述中间介质层一侧，所述颜色层至少设有1个颜色区域。
在其中一实施例中，所述微镜动态光变膜还包括介质保护层、透明保护层、压敏胶层和离型纸层，所述介质保护层设置在所述微透镜阵列层远离所述基膜的一侧，所述透明保护层设置在所述介质保护层远离所述微透镜阵列层的一侧，所述压敏胶层设置在所述颜色层远离所述下介质层的一侧，所述离型纸层设置在所述压敏胶层远离所述颜色层的一侧。
本实用新型提供的微镜动态光变膜，通过所述上介质层、所述中间介质层和所述下介质层三者形成随观察角变化而呈现颜色变化的变色结构，使微镜动态光变膜在转动时同时兼具微图形动态放大变化以及颜色发生变化的双重防伪效果，防伪力度极高。
附图说明
图1为本实用新型第一实施例微镜动态光变膜的结构示意图；
图2为本实用新型第二实施例微镜动态光变膜的结构示意图；
图3为本实用新型第三实施例微镜动态光变膜的结构示意图。
具体实施方式
下面结合附图和实施例，对本实用新型的具体实施方式作进一步详细描述。以下实施例用于说明本实用新型，但不用来限制本实用新型的范围。
第一实施例
请参图1，本实用新型第一实施例中提供的微镜动态光变膜，依次包括微透镜阵列层12、基膜11、信息层13、上介质层14、中间介质层15和下介质层16。信息层13与上介质层14接触，上介质层14、中间介质层15和下介质层16三者形成随观察角变化而呈现颜色变化的变色结构。
微透镜阵列层12上设有多个大小一致呈点阵排列或随机排列的微透镜，在微透镜阵列层12的下表面设置基膜11。
基膜11的透明度较高，用以保证透过基膜11能清晰地看到设置在其下表面的信息层13。具体地，基膜11为PET(Polyethylene terephthalate，聚对苯二甲酸类塑料)，在基膜11的下表面设置信息层13。
信息层13设有一具有微图文信息的微图文层。微图文层设有微图文凹槽50，该微图文凹槽50形成微图文信息。
具体地，微图文层中的微图文信息设置在微透镜的焦面附近，通过微透镜形成莫尔放大效应，从而使透过微透镜阵列层12观察到的微图文信息呈立体动态放大，进而增加防伪效果。
在信息层13下表面设置变色结构，变色结构为多层薄膜共振结构。该结构以共振原理为基础，实现颜色的表达：在不同观察角度入射波长变化时发生驻波共振，实现颜色的变换，即随着观察角度变化从而颜色发生变化。
变色结构具体阐述如下。
上介质层14和下介质层16采用真空蒸镀工艺或真空溅射工艺制备，中间介质层15采用真空蒸镀工艺或真空溅射工艺或纳米涂布的方式制备。其中，上介质层14制备在信息层13具有微图文信息一侧的表面；中间介质层15制备在上介质层14的下表面；下介质层16制备在中间介质层15的下表 面。
具体地，上介质层14的材质为高折射率介质，例如二氧化钛、硫化锌，其厚度为10-80nm；上介质层14的材质也可以为金属，其厚度为6-10nm。中间介质层15的材质为金属化合物，例如氟化镁，也可以为金属或聚合物，其厚度为150nm-2um；下介质层16的材质为高折射率介质，例如二氧化钛、硫化锌，其厚度为10-80nm；下介质层16的材质也可以为金属，其厚度为10-50nm。通过设计上介质层14、中间介质层15和下介质层16中各层材质或/和不同的厚度搭配实现颜色的表达，随着厚度变化，呈现的颜色发生变化，并且随着观察角度(入射角度)的变化，呈现的颜色也会发生变化。
在本实施例中，上介质层14的材质为金属铬，采用真空蒸镀工艺制备，其厚度为8nm；上介质层14两侧的表面均随形于与上介质层14接触的信息层13具有微图文信息一侧的表面。中间介质层15为PMMA(Polymethyl methacrylat，聚甲基丙烯酸甲酯)，采用纳米涂布的方式制备，其厚度为1um；中间介质层15的上表面随形于与上介质层14接触的信息层13具有微图文信息一侧的表面，其下表面平整。下介质层16的材质为金属铝，厚度为30nm。其中，上介质层14、中间介质层15和下介质层16形成具有变色功能的平板波导共振结构，该结构具体为法布里-珀罗腔。
在实际应用时，上介质层14的折射率和下介质层16折射率均大于中间介质层15的折射率。其中，中间介质层15折射率为1.38-1.51。
在观察角度发生变化时，共振波谱位置发生位移，产品呈现的颜色发生变化。因此本实施例的产品在转动时同时兼具微图形动态放大变化以及颜色发生变化的双重防伪效果，防伪力度极高。
第二实施例
如图2所示，本实用新型第二实施例提供的微镜动态光变膜依次包括微透镜阵列层22、基膜21、信息层23、上介质层24、中间介质层25和下介质层26。信息层23与上介质层24接触，上介质层24、中间介质层25和下介 质层26三者形成随观察角变化而呈现颜色变化的共振结构。本实施例微镜动态光变膜与上述第一实施例的区别在于，微镜动态光变膜还包括颜色层27。其中，颜色层27设置在下介质层26远离中间介质层25一侧。
颜色层27的颜色为深色，例如黑色、深紫色、深蓝色；颜色层27的厚度为0.1um～20um；优选地，颜色层27的厚度为1um～10um。颜色层27的材质为纳米级油墨，颜色层27的颜色为黑色。
在本实施例中，各介质层采用真空蒸镀工艺制备，因此，各介质层的上表面和下表面均随形于与上介质层14接触的信息层13具有微图文信息一侧的表面。具体地，上介质层24的材质为硫化锌，其折射率为2.4，厚度为10nm；中间介质层25的材质为氟化镁，其折射率为1.38，厚度为200nm。下介质层26的材质为二氧化钛，厚度30nm。
上介质层24、中间介质层25和下介质层26形成平板波导共振结构，加之颜色层27的叠加，共振波谱位置发生位移，产品呈现复杂的颜色变化。在观察角度发生变化时，谐振频率会发生移动，使得本实用新型的多彩动态变色膜同时具备变色效果。因此，通过叠加颜色层27用于吸收不同波长的颜色，改变了最终反射光的波长，而不是原本共振结构呈现的颜色，因此实现较强(即，颜色较深)且复杂的变色效果，从而增强了视觉感，并且增强了防伪效果。本实施例的产品在转动时同时兼具微图形动态放大变化以及颜色发生复杂变化的双重防伪效果，防伪力度极高。
第三实施例
如图3所示，本实用新型第三实施例提供的微镜动态光变膜依次包括微透镜阵列层32、基膜31、信息层33、上介质层34、中间介质层35和下介质层36。信息层33与上介质层34接触，上介质层34、中间介质层35和下介质层36三者形成随观察角变化而呈现颜色变化的平板波导共振结构。
本实施例微镜动态光变膜与上述第二实施例的区别在于，微镜动态光变膜还包括介质保护层38、透明保护层39、压敏胶层310和离型纸层311，以 及信息层33设有2层微图文层。
下面对本实施例微镜动态光变膜进行具体阐述。
2个微图文层分别为第一微图文层331和第二微图文层332；第一微图文层331位于基膜31的下表面，第二微图文层332铺设于第一微图文层331下表面。第一微图文层331和第二微图文层332的厚度设置与微透镜焦距相对应，两层微图文层中的微图文信息对应错开排布。从而使微镜动态光变膜具有多样性的防伪功能，进而增强防伪能力。通过微透镜形成莫尔放大效应，从而使各微图文信息均形成多层动态立体防伪效果，进而增加防伪效果。同时，透过微透镜阵列层12观察到的各微图文层的微图文信息在微镜动态光变膜上显示局部或整面的布置。
具体地，第一微图文层331的微图文凹槽50处刮涂油墨60，油墨60随形于微图文凹槽50形成微图文信息，使微图文信息具有色彩，增加突出性。第二微图文层332的微图文信息为微图文凹槽50。
在其它实施例中，信息层33至少设置3个微图文层，且各微图文层的微图文信息排布位置相互错开。各微图文层中的微图文信息可以相同也可以不同，同一微图文层的微微图文信息可以为单一的一种，也可以是多种组合，如图文、图像的组合或单一的一种。
介质保护层38设置在微透镜阵列层32远离基膜31的一侧，透明保护层39设置在介质保护层38远离微透镜阵列层32的一侧，压敏胶层310设置在颜色层37远离所下介质层36的一侧，离型纸层311设置在压敏胶层310远离颜色层37的一侧。介质保护层38外设置透明保护层39。介质保护层38保护微透镜阵列层32的结构不被破坏，透明保护层39满足产品在使用条件下的各项性能要求。
使用时，剥离离型纸层311，将压敏胶层310贴附在使用底材即可。
本实施例提供的产品使用便利；具有动态放大图文效果与变色效果，防伪度极高。
在附图中，为了清晰起见，会夸大层和区域的尺寸和相对尺寸。应当理解的是，当元件例如层、区域或基板被称作“形成在”、“设置在”或“位于”另一元件上时，该元件可以直接设置在所述另一元件上，或者也可以存在中间元件。相反，当元件被称作“直接形成在”或“直接设置在”另一元件上时，不存在中间元件。
在本文中，术语“上”、“下”、“前”、“后”、“左”、“右”、“顶”、“底”、“内”、“外”、“竖直”、“水平”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了表达技术方案的清楚及描述方便，因此不能理解为对本实用新型的限制。
在本文中，用于描述元件的序列形容词“第一”、“第二”等仅仅是为了区别属性类似的元件，并不意味着这样描述的元件必须依照给定的顺序，或者时间、空间、等级或其它的限制。
在本文中，除非另有说明，“多个”、“若干”的含义是两个或两个以上。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，除了包含所列的那些要素，而且还可包含没有明确列出的其他要素。
以上所述，仅为本实用新型的具体实施方式，但本实用新型的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本实用新型揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本实用新型的保护范围之内。因此，本实用新型的保护范围应以所述权利要求的保护范围为准。

Claims (8)

  1. 一种微镜动态光变膜，其特征在于，依次包括微透镜阵列层、基膜、信息层、上介质层、中间介质层和下介质层，所述信息层与所述上介质层接触，所述上介质层、所述中间介质层和所述下介质层三者形成随观察角变化而呈现颜色变化的变色结构。
  2. 如权利要求1所述的微镜动态光变膜，其特征在于，所述上介质层、和所述下介质层的折射率均大于所述中间介质层的折射率。
  3. 如权利要求1所述的微镜动态光变膜，其特征在于，所述信息层至少设有一具有微图文信息的微图文层，当所述微图文层具有多层时，每一层的微图文与其余层的微图文对应错开。
  4. 如权利要求3所述的微镜动态光变膜，其特征在于，所述微图文层设有微图文凹槽，所述微图文凹槽形成所述微图文信息，或，所述微图文凹槽中填设有油墨，所述油墨随形于所述微图文凹槽形成所述微图文信息。
  5. 如权利要求1所述的微镜动态光变膜，其特征在于，所述微透镜阵列层上设有多个大小一致的微透镜，所述信息层设置于所述微透镜的焦面附近。
  6. 如权利要求1所述的微镜动态光变膜，其特征在于，所述上介质层的厚度小于中间介质层，下介质层的厚度小于中间介质层。
  7. 如权利要求1所述的微镜动态光变膜，其特征在于，所述微镜动态光变膜还包括颜色层，所述颜色层设置在所述下介质层远离所述中间介质层一侧，所述颜色层至少设有1个颜色区域。
  8. 如权利要求7所述的微镜动态光变膜，其特征在于，所述微镜动态光变膜还包括介质保护层、透明保护层、压敏胶层和离型纸层，所述介质保护层设置在所述微透镜阵列层远离所述基膜的一侧，所述透明保护层设置在所述介质保护层远离所述微透镜阵列层的一侧，所述压敏胶层设置在所述颜色层远离所述下介质层的一侧，所述离型纸层设置在所述压敏胶层远离所述颜色层的一侧。
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