WO2021254208A1 - 一种微纳米结构卡牌及其使用方法 - Google Patents

一种微纳米结构卡牌及其使用方法 Download PDF

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Publication number
WO2021254208A1
WO2021254208A1 PCT/CN2021/098785 CN2021098785W WO2021254208A1 WO 2021254208 A1 WO2021254208 A1 WO 2021254208A1 CN 2021098785 W CN2021098785 W CN 2021098785W WO 2021254208 A1 WO2021254208 A1 WO 2021254208A1
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Prior art keywords
card
micro
nano structure
nano
cards
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PCT/CN2021/098785
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English (en)
French (fr)
Inventor
许家维
许黄雅雪
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厦门市维尔昇科技有限公司
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Publication of WO2021254208A1 publication Critical patent/WO2021254208A1/zh

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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
    • A63F1/00—Card games
    • A63F1/02—Cards; Special shapes of cards
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings

Definitions

  • the invention belongs to the technical field of card cards, and particularly relates to a card card with a micro-nano structure and a use method thereof.
  • micro-nano structure In the prior art, it is a mature technology to form a card on a transparent film by making a micro-nano structure.
  • the micro-nano structure on the card can clearly see the micro-nano pattern under irradiated light. When there is no irradiated light, The surface of the card with micro-nano structures is a visual state of matte, and the areas without micro-nano structures appear to be transparent.
  • Such micro-nano structured cards are generally used as a single element in the prior art.
  • the game cards in the prior art such as poker cards or board game cards, are all printed on paper cards and have a single form. In order to increase the fun of the game, they have explored in many ways. However, there is no idea of using micro The nanostructure designs the pattern on the card on a transparent plastic film.
  • the purpose of the present invention is to overcome the shortcomings of the prior art and provide a card with a micro-nano structure to increase the interest of game cards or sets of cards made with the card.
  • the purpose of the present invention is to provide a card with micro-nano structure with omnidirectional anti-peeping characteristics.
  • Another object of the present invention is to provide a method for using the above-mentioned micro-nano structure card.
  • the first technical solution adopted by the present invention to solve its technical problems is.
  • a card with a micro-nano structure which includes a card body made of a plurality of transparent or semi-transparent plastic films.
  • the surface is provided with a grating micro-nano structure formed by hot pressing or UV transfer, and the grating micro-nano structure carries distinguishing information, and the content of each card of the distinguishing information is different, forming a set of game cards.
  • a card with a micro-nano structure which includes a card body made of a plurality of transparent or semi-transparent plastic films.
  • the micro-nano structure is provided on the surface, the micro-nano structure carries distinguishing information, the micro-nano structure card includes a plurality of cards, and the micro-nano structure on the structure surface of each card contains different distinguishing information,
  • the patterns formed by the different information on the cards are logically related in content, so that all the cards form a set of card groups.
  • each card with different information on the micro-nano structure can not be distinguished by the naked eye under ordinary light; and/or, under ordinary light Under the naked eye, 360-degree full-angle anti-peeping, that is, the matte micro-nano structure on all cards in a set of card sets is visually the same at any angle.
  • the ordinary light is non-irradiating light, such as natural light or illuminating light.
  • the micro-nano structure is a diffractive optical element (Diffractive Optical Elements, DOE for short) or a holographic diffractive optical element (Holographic Diffractive Optical Elements, referred to as HDOE).
  • DOE diffractive Optical Elements
  • HDOE holographic diffractive Optical Elements
  • the plastic film is made of colored or colorless transparent materials.
  • the micro-nano structure on the structural surface may be a micro-structure or a nano-structure.
  • the unit size of the micro-nano structure on the structural surface is within 2 mm ⁇ 2 mm, and the unit is repeatedly arranged on the structural surface of the card.
  • the unit size of the micro-nano structure on the structure surface is within (0.5-2) mm ⁇ (0.5-2) mm.
  • the microstructures on the card are repeatedly arranged on the card, so that as long as the point light source is irradiated on the card in use, the distinguishing information on the card can be presented, that is, the specific pattern.
  • the card group may constitute a deck of game cards, for example, it may be a deck of playing cards, or a pair of board game cards, for example, a board game card of Three Kingdoms, or other game cards.
  • the card set can also be a set of cards with relevance in content, for example, a set of 108 cards with micro-nano structure depicting pictures of one hundred and eight generals in the Water Margin, or depicting 12 pictures of the Twelve Hairpins of Jinling in the Dream of Red Mansions and so on. In sales, it can be sold in sets, such as playing cards, or sold separately. For example, a set of Jinling Twelve Hairpins cards are sold in stages in a commercial promotion.
  • a micro-nano structure of thermocompression molding or UV transfer or nano-imprint is provided on the structural surface.
  • the texture of the micro-nano structure is determined according to the pattern design, and can be symmetrical, such as a symmetrical pattern such as playing cards.
  • the micro-nano structure is symmetrical or asymmetrical.
  • the micro/nano structure on the structural surface is a 3D micro/nano structure.
  • micro-nano structure to make game cards
  • DOE micro-nano structure
  • the difference information contained in the micro-nano structure on each card is different, although the micro-structure (DOE) has a certain degree of privacy Performance, but when viewed with the naked eye in the absence of irradiated light, that is, under normal light, the card’s pattern complexity is different, and it will show a different visual matte color difference.
  • This kind of card has a visual matte color difference, and the player will pass the card.
  • the difference in the color difference of the cards can guess the large and small cards, which will affect the fairness of the game, so that the cards provided by the present invention are inconvenient to use as game cards.
  • each card with different distinguishing information can be viewed with the naked eye under ordinary light, and it is 360-degree full-angle peep-proof, that is, the complexity of the pattern on the card is different, but the matte surface (sub-surface) on the card is not different.
  • 360-degree full-angle peep-proof that is, the complexity of the pattern on the card is different, but the matte surface (sub-surface) on the card is not different.
  • the etching depth of the micro-nano structure on each card, the order of photoetching times, and the coating to change the visual chromatic aberration of the micro-structure can be adjusted.
  • the adjustment means may be.
  • Method 1 Adjust the etching depth of the photolithography of the micro-nano structure.
  • the etching depth of the micro-nano structures on each card is not the same.
  • the etching depth of the micro/nano structure varies according to the complexity of the pattern of each card.
  • the etching depth of the micro/nano structure on the card with a simpler pattern is deeper, and the etching of the micro/nano structure on the card with the more complicated pattern The depth is shallow.
  • the etching depth on the card is between 0.1 and 3 microns.
  • Means 2 Adjust the etching order of micro-nano structure lithography.
  • Measure 1 The order of the micro-nano structure on each card in a set of card groups is the same, for example, it can be the second order, or the fourth order, or the eighth order,...
  • the etching depth of the order formed by the subsequent photolithography decreases.
  • Measure 2 The order of the micro-nano structure on each card in a set of card groups is different.
  • the etching order of the micro-nano structure on the structural surface of each card varies according to the complexity of the card pattern.
  • the micro/nano structure on the structure surface may be photoetched between 1 to 5 times to form a second, fourth, eighth, sixteenth, or thirty-two-order micro-nano structure. It is preferably 1 to 3 times of photolithography to form second, fourth and eighth order micro-nano structures.
  • this card it is possible for this card to not be able to see the difference in the fog surface generated by the micro-nano structure on the structural surface except under the irradiation of light.
  • Means 3 Adjust the color of the plastic film, that is, the plastic film is made of colored transparent materials.
  • the card By making the card with colored transparent plastic film, the light transmittance of colored transparent materials can be reduced, and the visual chromatic aberration can also be reduced, so that the foggy difference caused by the different complexity of the pattern on the card can be improved.
  • Means 4 Set up a coating layer on the plastic film.
  • a coating layer is provided on the plastic film to change the visual chromatic aberration of the card.
  • the plating film layer is preferably a colored and transparent plating film.
  • the coating is set so that the light transmittance parameter of the card is 20% to 90%, so as to adjust the visual color difference of each card.
  • the coating material is aluminum, or silver, or gold, or platinum, or nickel.
  • the coating layer may be provided on the structural surface of the plastic film or on the non-structural surface, but is preferably provided on the structural surface.
  • the above-mentioned adjustment methods can be used alone or in combination of two or more methods.
  • the non-structural surface of the plastic film is provided with a first printing pattern.
  • a part of the non-structural surface of the plastic film is provided with a first printing pattern.
  • a part of the structural surface of the plastic film is provided with a second printing pattern.
  • the content of the second printing pattern is consistent with the content of the difference information.
  • the third technical solution adopted by the present invention to solve its technical problems is the use of cards in the aforementioned various solutions.
  • a method for using micro-nano structure cards which includes any of the above-mentioned micro-nano structure cards; looking at a point light source through a plastic film to read the distinguishing information; or, illuminating the plastic film with a point light source The difference information is presented on the chip.
  • the present invention technologically proposes to use micro-nano structures on a plastic film to form multiple cards with related or coherent patterns on the content, and to use the plastic film with micro-nano structures to make cards, which will distinguish
  • the information is set on the micro-nano structure, and the content on it can be seen through the point light source.
  • a new form of game card or a set of cards is added, which enriches the card form and also increases the interest of this kind of optical products. sex.
  • the present invention adjusts the micro-nano structure on the cards with different pattern complexity in the complete set of cards, or uses colored transparent plastic film to make the card body, or makes a coating layer on the card body, or The combination of several methods can make the difference between the cards in the ordinary viewing angle invisible and indistinguishable, and the difference information can be read only through a point light source, so that the card provided by the present invention becomes a 360° full-angle privacy card Card.
  • the card provided by the present invention can print patterns on the non-structural surface of the card, which also enriches the shape of the card; it can also print some patterns on the structural surface, with various forms and rich functions.
  • FIG. 1 is a schematic diagram of a card with a single-layer micro-nano structure DOE formed by photolithography in one preferred embodiment of the micro-nano structure card provided by the present invention.
  • FIG. 2 is a schematic cross-sectional view of a coating layer provided on the structural surface of the card in the first preferred embodiment of the micro-nano structure card provided by the present invention.
  • Fig. 3 is a schematic diagram showing the pattern on the card by facing the micro-nano structure card provided by the present invention to the LED light.
  • Fig. 4 is a schematic diagram of illuminating the card with micro-nano structure provided by the present invention with an LED lamp to show a pattern on the card.
  • FIG. 5 is a schematic diagram of the structural surface structure of the second preferred embodiment of the micro-nano structure card provided by the present invention.
  • FIG. 6 is a schematic diagram of the non-structure surface structure of the second preferred embodiment of the micro-nano structure card provided by the present invention.
  • FIG. 7 is a schematic diagram of the structure of the structure surface of the third preferred embodiment of the micro-nano structure card provided by the present invention.
  • Plastic diaphragm 1' Plastic diaphragm 1' .
  • the first printing pattern 3' The first printing pattern 3'.
  • Plastic diaphragm 1'' Plastic diaphragm 1'' .
  • the second printing pattern 4' is the second printing pattern 4'.
  • the first embodiment is a first embodiment.
  • a card with a micro-nano structure of the present invention includes a card body made of a number of colorless or colored transparent or translucent plastic films 1 to form a deck of playing cards with 54 cards
  • the main body, the structural surface of the plastic film 1 is provided with a micro-nano structure 2 of thermocompression molding or UV transfer or nano-imprinting.
  • the micro-nano structure 2 is a diffractive optical element (Diffractive Optical Elements) or Holographic Diffractive Optical Elements (Holographic Diffractive Optical Elements).
  • the micro-nano structure 2 contains distinguishing information.
  • the distinguishing information on each card is the pattern of the playing cards, including four suits of hearts, spades, squares and clubs, patterns of each suit ranging from 1 to 13, and big and small kings.
  • the etching depth of the micro/nano structure on the card with simpler patterns is deeper, and the etching depth of the micro/nano structure on the more complicated card is shallow.
  • the etching depth of the micro/nano structure on it is 1.20 ⁇ m to 1.5 ⁇ m, and for a card with a suit pattern of 6 to 10, the etching depth of the micro/nano structure on it is 0.8 ⁇ m to 1.0.
  • the color pattern is 11 ⁇ 13, that is, the pattern is King K, Queen Q, Attendant J, and King Size.
  • the etching depth of the micro-nano structure on it is 0.1 ⁇ m to 0.6 ⁇ m.
  • the order of DOE on the card is adjusted, that is, different times of photolithography are used for different cards in the process, and micro-nano structures of different orders are formed on the card, and the color pattern is 1 ⁇
  • the upper DOE is the eighth-order DOE after three lithography
  • the pattern is 6-10
  • the upper DOE is the fourth-order after two lithography
  • the pattern is 11-13 and the size is king.
  • the card is a second-order micro-nano structure obtained by one photolithography.
  • the wavelength is set to 520 nm.
  • the etching depth of the first photolithography is 577.2 nm
  • the second time is 288.6 nm
  • the third time is 144.3 nm.
  • a second photolithography is used to obtain a fourth-order DOE.
  • the etching depth of the first photolithography is 577.2 nanometers
  • the etching depth of the second photolithography is 288.6 nanometers.
  • a second-order DOE is obtained by using photolithography once, and the etching depth in this photolithography is 577.2 nanometers.
  • each card in a set of cards has the same order, which can be second, fourth or eighth.
  • the more the order the higher the diffraction efficiency of the pattern that appears under irradiation light.
  • an increase in the number of stages will increase production costs.
  • the adjustment of the etching depth and the order of the micro-nano structures on the above-mentioned cards can be combined. Such adjustments can make the privacy features of the card made of transparent plastic film more ideal.
  • a colored transparent plastic film is used as the card body.
  • a colored plastic film such as a plastic film like sunglasses, the light transmittance is reduced, and the visual chromatic aberration of the micro-nano structure on each card can also be unified, achieving a perfect anti-peep effect.
  • a coating layer 7 is provided on the structural surface of the card 1, which can change the light transmittance of the card, so that the card with a simple pattern and the card with a complex pattern
  • the chromatic aberration of the micro/nano structure is basically the same and it is difficult to distinguish, so as to enhance the anti-peep performance.
  • the coating material can be any transparent material.
  • it can be aluminum, and the coating can use evaporation, ion, and sputtering processes. No matter which process is used, the thickness of the coating is based on the light transmittance of the plastic film obtained from 20 to 90%. It makes the cards with different distinguishing information have no visual difference, and achieves anti-peeping by adjusting the light transmittance of the plastic film.
  • one or several or all of several measures can be used to adjust the etching depth, the number of etchings, the use of colored plastic films, and the setting of optical coatings for the card.
  • the reasonable cooperation of several measures can be achieved. Ideal anti-peep effect.
  • the use of colored transparent plastic film as the card body and the coating layer on the card can make the light of the point light source that irradiate the light softer and make the imaging effect more comfortable and soft.
  • the colored transparent plastic film can be used to make the card, it can also solve the problem of visual chromatic aberration, achieve a better anti-peep effect and its economy is better.
  • the problem of visual chromatic aberration can also be solved ideally by just using the coating layer.
  • the etching depth and order of the micro-nano structure on each card in a set of game cards can be the same, which is more economical.
  • the micro/nano structure on the aforementioned structural surface is a 3D micro/nano structure.
  • the playing cards provided in the above-mentioned embodiments can be viewed with the naked eye under ordinary light. Neither the card holder nor the opponent can or easily see the difference between the cards and the cards. It is impossible to guess the large and small cards, reaching a 360-degree view. Location privacy.
  • the holder needs to look at the point light source 6 through the plastic film 1 to read the distinguishing information on the micro-nano structure 2 (as shown in FIG. 3).
  • an LED light 6 can be placed in the middle, and the user sits around the LED light, and each uses the LED light to read the distinguishing information of the card surface. You can also put the card on the hand on the table, and the LED light 5 or the flashlight of the mobile phone shines on the card surface of the card 1 (as shown in Figure 4), and you can also see the difference information of the card surface.
  • the unit size of the micro/nano structure on the structure surface can be repeatedly arranged within 2 mm ⁇ 2 mm; for example, the unit may be 1 ⁇ 1 mm, and the unit may be repeatedly arranged in a set area on the structure surface, so as long as Point light sources illuminate any position in the area to show the pattern on the card.
  • the difference from the previous embodiment is that the non-structural surface of the plastic film 1'of this embodiment is provided with a first printing pattern 3'.
  • the third embodiment is the third embodiment.
  • the difference from the second embodiment is that a part of the structural surface of the plastic film 1" of this embodiment is provided with a second printing pattern 4', and the pattern of the second printing pattern 4'
  • the information can be consistent with the distinguishing information.
  • this card can be used like ordinary cards in addition to reading the distinguishing information through a point light source.
  • the card is a set of 12 cards, a colored plastic film is used as the card body, and the patterns formed by the nano-structured DOE elements set on the structural surface of each card are respectively in "Dream of Red Mansions"
  • the characters of Jinling Twelve Hairpins have the same etching depth and order of the nanostructure of the DOE element on each card.
  • another solution of the micro-nano structure card provided by the present invention is given, that is, the difference information on the micro-nano structure on each card in a set of cards is still related to each other, or there may be Coherence, but not a game card.
  • the development of such a deck can broaden the application range of the cards provided by the present invention.
  • the set of Jinling twelve hairpins provided in this embodiment can be sold as a set or sold separately.
  • the present invention is the first to propose using DOE or HDOE to design patterns on a transparent plastic film to make a complete set of cards.
  • the difference information recorded on the micro-nano structure on it, the difference information between the cards is consistent and/ Or logical relations can be made into game cards, etc., adding new forms of expression and new varieties to this type of game cards.
  • the present invention creatively adjusts the micro-nano structure on each card, such as the etching depth, the order of the micro-nano structure, etc., and can also adjust the transparency of the plastic film.
  • the pattern complexity of each card varies greatly. You can prevent peeping by adjusting the number of lithography of each card, that is, the order of the micro-nano structure; for a set of cards, each card The pattern complexity of the cards is relatively close, and you can prevent peeping by adjusting the etching depth of the micro-nano structure on each card. Using a colored transparent film or setting a coating layer on the card, the effect of adjusting the visual color difference on the surface of the card is very good, and it can also improve its aesthetics.

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Abstract

一种微纳米结构卡牌，包括若干个透明或半透明塑料膜片制成的卡牌本体，塑料膜片的一侧表面为结构面，其背面为非结构面，在结构面设有热压成型或UV转印的光栅微纳米结构，光栅微纳米结构上载有区别信息，该区别信息各个卡牌上的内容不同。若干卡牌可以组成一套游戏牌，也可以组成一套其中区别信息相互有逻辑关联的卡牌，以此增加卡牌的趣味性，还可以通过各种手段提高卡牌的防窥性。该方案还提供上述微纳米结构卡牌的使用方法。

Description

一种微纳米结构卡牌及其使用方法 技术领域
本发明属于卡牌技术领域，特别涉及一种微纳米结构卡牌及其使用方法。
 背景技术
现有技术中通过微纳米结构制作在透明膜片上形成卡片是成熟的技术，该卡片上的微纳米结构在有照射光下能够清晰地看出微纳米构成的图案，在没有照射光时，卡片上有微纳米结构的表面是呈现雾面的视觉状态，没有微纳米结构之处看上去是透明的。这种微纳米结构的卡片在现有技术中一般都是单一元件使用。
 在现有技术中，本技术领域的研究多集中在对于卡片上的微纳米结构在照射光下成像效果上，而对于卡片在非照射条件下用肉眼观察的视觉色差很少关注。
 现有技术中的游戏牌，例如扑克牌或桌游卡牌等都是在纸质牌面上印刷图案，形式单一，为了增加游戏的趣味性在很多方面进行发掘，但是，还没有想到用微纳米结构在透明的塑料膜片上设计卡牌上的图案。
 技术问题
本发明的目的在于克服现有技术之不足，提供一种微纳米结构卡牌，以此增加用其制作的游戏牌或成套卡牌的趣味性。
 进一步地，本发明的目的是，提供一种具有全方位防窥特点的微纳米结构卡牌。
 本发明的另一个目的是，提供上述微纳米结构卡牌的使用方法。
 技术解决方案
本发明解决其技术问题所采用的第一种技术方案是。
一种微纳米结构卡牌，其包括若干个透明或半透明塑料膜片制成的卡牌本体，所述塑料膜片的一侧表面为结构面，其背面为非结构面，在所述结构面上设有热压成型或UV转印的光栅微纳米结构，所述光栅微纳米结构上载有区别信息，该区别信息各个卡牌上的内容不同，构成一套游戏牌。
 本发明解决其技术问题所采用的第二种技术方案是。
一种微纳米结构卡牌，其包括若干个透明或半透明塑料膜片制成的卡牌本体，所述塑料膜片的一侧表面为结构面，其背面为非结构面，在所述结构面设有微纳米结构，所述微纳米结构上载有区别信息，所述微纳米结构卡牌包括若干张卡牌，各张卡牌结构面上的所述微纳米结构载有的区别信息不同，但各张卡牌上的区别信息构成的图案在内容上有逻辑性的关联，使得所有卡牌组成一套卡牌组。
 在上述两个技术方案中，进一步地，还有如下优选措施。
一套卡牌组中的各张卡牌上微纳米结构的区别信息不同的各张卡牌，在普通光线下肉眼看各张卡牌无差异使之无法分辨；和/或，在普通光线下肉眼下，360度全角度防窥，即在任何角度下一套卡牌组中所有卡牌上显现的雾面微纳米结构在视觉上是一样的。
 所述普通光线为非照射光的光线，例如自然光线或照明光线等。
 所述微纳米结构为衍射光学元件(Diffractive Optical Elements，简称DOE)或全息衍射光学元件 (Holographic Diffractive Optical Elements，简称HDOE)。
 所述塑料膜片由有色或无色透明材料制成。
 所述结构面上的微纳米结构可以是微米结构，也可以是纳米结构。
 所述结构面上的微纳米结构的单元大小在2毫米×2毫米以内，该单元在卡牌的结构面上重复排列。
 更进一步地，所述结构面上的微纳米结构的单元大小在（0.5~2）毫米×（0.5~2）毫米以内。
 卡牌上的微结构在卡牌上重复排列，使得在使用中使用点光源只要照射在卡牌上，就可以呈现出其上的区别信息即其中的特定图案。
 所述卡牌组可以构成一副游戏牌，例如可以是一副扑克牌，或者是一副桌游牌，例如一副三国杀的桌游牌，或者是其他游戏卡牌。除此之外，所述卡牌组也可以是一套内容上有关联性的卡牌，例如一套108张卡牌用微纳米结构描绘的水浒传中一百单八将的图片，或者描绘红楼梦金陵十二钗的12张图片等等。在销售中，可以成套出售，例如扑克牌等，也可以分别销售，例如商业促销中将一套金陵十二钗的卡牌分次出售。
 优选地，在所述结构面设有热压成型或UV转印或纳米压印的微纳米结构。所述微纳米结构的纹路根据图案设计决定，可以是对称的，例如扑克牌等对称图案，微纳米结构就是对称的，也可以是不对称的。
 优选地，所述结构面上的微纳米结构是3D的微/纳米结构。
 用微纳米结构（DOE）做游戏牌，如果按照常规卡片的做法，即每张卡牌上的微纳米结构载有的区别信息都是不一样的，虽然微结构（DOE）具有一定的防窥性能，但是在无照射光即普通光线下肉眼看，卡牌的图案复杂程度不同，会显示出不同的视觉的雾面色差，这种卡牌因为有视觉的雾面深浅色差,玩家会通过卡牌色差的不同猜测出大小牌，由此会影响到游戏的公正性，从而使得本发明提供的卡牌作为游戏牌不方便使用。
 因此，区别信息不同的各张卡牌在普通光线下肉眼看，360度全角度防窥，即卡牌上图案的复杂程度不同但其上的雾面（亚面）没有差别，是作为尤其是游戏牌最好能够具备的特点。
 为了实现本发明提供的卡牌360°全方位防窥，可以调整各张卡牌上的所述微纳米结构的蚀刻深度、光刻次数形成的阶数、镀膜改变微结构视觉色差等。优选地，调整手段可以是。
手段1：调整微纳米结构的光刻的蚀刻深度。
 在一套卡牌组中，各张卡牌上的微纳米结构的蚀刻深度不尽相同。
 所述微纳米结构的蚀刻深度根据各张卡牌图案的复杂程度而不尽相同，图案较简单的卡牌上微纳米结构的蚀刻深度较深，图案较复杂的卡牌上微纳米结构的蚀刻深度较浅。
 所述卡牌上的所述蚀刻深度在0.1~3微米之间。
 手段2：调整微纳米结构光刻的蚀刻阶数。
 其中有两种措施。
措施1：一套卡牌组中每张卡牌上的微纳米结构的阶数相同，例如可以是二阶，或四阶，或八阶，……。在各张卡牌的微纳米结构的阶数相同时，后面光刻例如第二次、第三次光刻形成的阶数的蚀刻深度递减。
 措施2：一套卡牌组中各张卡牌上的微纳米结构的阶数不尽相同。
 各张卡牌上所述结构面上的微纳米结构的蚀刻阶数根据卡牌图案的复杂程度而不尽相同。
 具体地，所述图案较复杂的减少阶数，图案较简单的增加阶数。
 所述结构面上的微纳米结构可以是光刻1至5次之间，形成二阶、四阶、八阶、十六阶或三十二阶的微纳米结构。优选为1~3次光刻，形成二阶、四阶和八阶微纳米结构。
 通过上述的调整，可以使得本卡牌在除了照射光下，都不能看出结构面上微纳米结构产生的雾面有差别。
 手段3：调整塑料膜片的颜色，即所述塑料膜片由有色透明材料制成。
 通过用有色的透明塑料膜片制作本卡牌，降低有色透明材料的透光率，也可以降低视觉色差，使得卡牌上因图案复杂程度不同导致的雾面差别得到改善。
 手段4：在塑料膜片上设置镀膜层。
 即在塑料膜片上设置一镀膜层，以改变卡牌的视觉色差。该镀膜层优选为有色透明的镀膜。
 优选地，设置所述镀膜，使所述卡牌的透光率参数为20~90%，以调整各张卡牌的视觉色差。
 优选地，镀膜材料有铝，或银，或金，或铂，或镍等。
 所述镀膜层可以设置在塑料膜片的结构面上，也可以设在非结构面上，但优选设置在所述结构面上。
 上述几种调整手段可以单独使用，也可以组合两种或多种手段配合使用。
 在上述技术方案的基础上，还可以有如下优选实施例。
在另一较佳实施例中，所述塑料膜片的所述非结构面设有第一印刷图案。
 在另一较佳实施例中，所述塑料膜片的所述非结构面的一部分设有第一印刷图案。
 在另一较佳实施例中，所述塑料膜片的所述结构面的一部分设有第二印刷图案。
 在另一较佳实施例中，所述第二印刷图案的内容与所述区别信息内容一致。
 本发明解决其技术问题所采用的第三种技术方案是前述各种方案中的卡牌的使用方法。
一种微纳米结构卡牌的使用方法，其包括上述的任一种微纳米结构卡牌；透过塑料膜片看点光源以读取所述区别信息；或者，点光源照射在所述塑料膜片上呈现出所述区别信息。
 有益效果
本发明的有益效果是。
1.本发明开创性地提出用微纳米结构设置在塑料膜片上形成多张内容上相关联或连贯性图案的卡牌，使用带有微纳米结构的塑料膜片制成卡牌，将区别信息设置在微纳米结构上，通过点光源照射能够看到其上的内容，增加了一种新形式的游戏牌或成套卡牌，丰富了卡牌的形态，也增加了该类光学产品的趣味性。
 2.本发明通过将成套的卡牌中图案复杂程度不同的卡牌上的微纳米结构进行调整，或者用有色的透明塑料膜片制作卡牌本体，或者在卡牌本体上做镀膜层，或者几种手段的组合，可以使得在普通视角下各张卡牌看不出差异，无法分辨，需通过点光源才可以读取区别信息，使得本发明提供的卡牌成为360°全角度防窥卡牌。
 3.本发明提供的卡牌，在卡牌的非结构面可以印刷图案，同样丰富了卡牌的形态；在结构面也可以印刷部分图案，形式多样，丰富使用功能。
 下面结合附图及实施例对本发明作进一步详细说明；但本发明提供的微纳米结构卡牌及其使用方法不局限于实施例。
 附图说明
图1是本发明提供的微纳米结构卡牌的较佳实施例一中一次光刻形成单层微纳米结构DOE的卡牌的结构示意图。
图2是本发明提供的微纳米结构卡牌的较佳实施例一中于卡牌上的结构面上设置镀膜层的剖面示意图。
 图3为将本发明提供的微纳米结构卡牌对着LED灯，呈现出卡牌上的图案的示意图。
 图4为将本发明提供的微纳米结构卡牌用LED灯照射，呈现出卡牌上的图案的示意图。
 图5是本发明提供的微纳米结构卡牌的较佳实施例二的结构面结构示意图。
 图6是本发明提供的微纳米结构卡牌的较佳实施例二的非结构面结构示意图。
 图7是本发明提供的微纳米结构卡牌的较佳实施例三的结构面的结构示意图。
标号说明。
实施例一。
塑料膜片            1。
微纳米结构        2。
镀膜层                7。
点光源                6。
LED灯                5。
实施例二。
塑料膜片            1’ 。
第一印刷图案    3’ 。
实施例三。
塑料膜片            1’’ 。
第二印刷图案    4’。
 本发明的实施方式
为方便理解本发明的技术构思及发明精神，以下针对本发明举不同实施例进行说明，惟该等实施例仅为说明本发明技术构思的例示，并非用以限制本发明的保护范围，在此先行说明。
 实施例一。
参见图1所示，本发明的一种微纳米结构卡牌，包括若干个无色或有色透明或半透明塑料膜片1制成的卡牌本体，构成一副扑克牌，有54张卡牌本体，所述塑料膜片1的结构面设有热压成型或UV转印或纳米压印的微纳米结构2，微纳米结构2为衍射光学元件(Diffractive Optical Elements)或全息衍射光学元件(Holographic Diffractive Optical Elements)。微纳米结构2上载有区别信息。
 在本实施例中，各张卡牌上的区别信息为扑克牌的图案，包括红桃、黑桃、方片和梅花四种花色、每种花色从1~13的图案，还有大小王。
 各种花色，从1到13，图案越来越复杂。如果用常规的微纳米结构设计方式，用同样的微纳米结构来制作，各张牌上的微纳米结构在塑料膜片1上形成的图案构成的雾面在普通光线下，用肉眼能够看出色差，根据色差能够推测出牌的大小，这样防窥性就比较差，使得游戏失去公正性。
 为了提高卡牌的防窥性，也就是不管卡牌上的图案简单还是复杂，肉眼看去没有色差，看不出差别，本发明创造性地提出，对于各种卡牌上结构面上的微纳米结构做如下调整。
调整微纳米结构的蚀刻深度，较简单图案的卡牌上微纳米结构的蚀刻深度较深，较复杂的卡牌上微纳米结构的蚀刻深度较浅。
 例如，花色图案为1~5的卡牌，其上的微纳米结构蚀刻深度在1.20微米~1.5微米，花色图案为6~10的卡牌，其上的微纳米结构蚀刻深度在0.8微米~1.0微米，花色图案为11~13，即图案为国王K、王后Q和侍从J以及大小王，其上的微纳米结构蚀刻深度在0.1微米~0.6微米。
 在另一个调节方案中，调节卡牌上DOE的阶数，即在工艺上对于不同的卡牌采用不同次数的光刻，在卡牌上形成不同阶数的微纳米结构，花色图案为1~5的卡牌，其上DOE为经过三次光刻得到八阶的DOE，花色图案为6~10的卡牌，其上DOE为经过两次光刻得到四阶，图案为11~13以及大小王的卡牌，为一次光刻得到二阶微纳米结构。
 光刻次数越多，卡牌塑料膜上的雾面颜色越深。图案简单的卡牌，采用光刻次数较多的阶数，图案较复杂的卡牌，采用光刻次数较少的阶数。这样，就可以将一幅扑克牌图案复杂程度不同的卡牌的雾面颜色调整的很接近而肉眼无法分辨。一个具体调节方案中，设定波长为520nm，对于简单图案的卡牌，第一次光刻的蚀刻深度为577.2纳米，第二次为288.6纳米，第三次为144.3纳米。
 对于图案较复杂的卡牌，采用二次光刻，得到四阶的DOE，这两次光刻中，第一次光刻的蚀刻深度为577.2纳米，第二次为288.6纳米。
 对于图案更复杂的卡牌，采用一次光刻，得到二阶的DOE，这一次光刻中的蚀刻深度为577.2纳米。
 前述仅仅是一个实施例，用以解释和说明采用调整微纳米结构的阶数的手段，不能理解为对于该手段的限定。
 关于各张卡牌微纳米结构的阶数，还可以是，一整套卡牌的每一张的阶数相同，可以是二阶，也可以是四阶或八阶。阶数越多，在照射光下显现的图案衍射效率得到提高。但是阶数增加会提升制作成本。在又一个调解方案中，可以将上述各张卡牌上的微纳米结构的蚀刻深度和阶数的调整相结合。这样的调节可以使得用透明塑料膜片制成的本卡牌的防窥特性更加理想。
 在又一个调节方案中，用有色的透明塑料膜片做卡牌本体。通过用有色塑料膜片，例如像墨镜一样的塑料膜片，使得透光率降低，也可以使得各张卡牌上的微纳米结构的视觉色差趋于一致，达到完美的防窥的效果。
 在再一个调节方案中，参见图2所示，在卡牌1上的结构面上设置镀膜层7，其可以改变卡牌的透光率，使得图案简单的卡牌和图案复杂的卡牌上的微纳米结构的色差基本相同而不易分辨，以此来增强防窥性能。在本调节方案中，镀膜材料采用透光的材料均可以。这里，作为举例可以是铝，镀膜可以采用蒸发、离子和溅射等工艺，不管是采用哪种工艺镀膜厚度为多少，均以得到的塑料膜片的透光率为20~90%为准，使得区别信息不同的卡牌在视觉上没有差别达到通过调整塑料膜片的透光率实现防窥。
 在实际使用中，可以将对卡牌采用调节蚀刻深度、蚀刻次数、使用有色塑料膜片和设置光学镀层几个措施中的一个或几个或全部，通过几种措施的合理配合，就可以达到理想的防窥效果。
 采用有色的透明塑料膜片做卡牌本体和在卡牌上设置镀膜层，可以使得照射光的点光源的光线更加柔和，使得成像效果更加舒适柔和。
 对于用无色透明材料的塑料膜片制作的卡牌，可以通过调节其上微纳米结构的蚀刻深度和光刻次数，就可以达到不错的防窥效果。对于使用无色透明的塑料膜片制作游戏牌，要解决视觉色差问题，就需要采用这些手段。
 如果可以用有色的透明塑料膜片制作卡牌，也能较好地解决视觉色差问题，达到较好的防窥效果且其经济性较佳。
 对于有色透明塑料膜片的卡牌，还可以结合镀膜层的配合。
 对于无色透明的塑料膜片制作的卡牌，也可以只要使用镀膜层的手段即可比较理想地解决视觉色差问题。这时候，一套游戏牌中各张卡牌上的微纳米结构的蚀刻深度和阶数可以是一样的，这种方式其经济性较佳。
 经试验证明，使用有色透明塑料膜片和在塑料膜片上设置镀膜层而降低透光率不会影响成像效果。
 前述结构面上的所述微纳米结构是3D的微/纳米结构。
 在上述实施例中提供的扑克牌，在普通光线下用肉眼观看，卡牌的持有者和对家都无法或不易从牌面上看出色差的差别，无法猜测大小牌，达到360度全方位的防窥。持有者需透过所述塑料膜片1看点光源6以读取所述微纳米结构2上的区别信息（如图3所示）。例如，使用这样的一副扑克牌时，可在中间放置一个LED灯6，使用者围绕该LED灯而坐，各自通过该LED灯读取牌面的区别信息。也可以把手上的卡牌放在桌上，LED灯5或手机的手电筒照在卡牌1的牌面上（如图4所示）也可以看到牌面的区别信息。
 所述结构面上的微/纳米结构的单元大小可以在2毫米×2毫米以内重复排列；例如单元可以是1×1毫米，重复排列在结构面上的一个设定的区域内，这样，只要点光源照射在该区域的任何位置，都可以呈现牌上的图案。
 实施例二。
参见图5和图6所示，与前述实施例的不同之处在于，本实施例的塑料膜片1’的非结构面设有第一印刷图案3’。
 实施例三。
参见图7所示，与实施例二的不同之处在于，本实施例的塑料膜片1’’的结构面的一部分设有第二印刷图案4’，所述第二印刷图案4’的图案信息可以与所述区别信息一致，如此，此卡牌除了通过点光源读取区别信息外，还可以如普通卡牌一样使用。
 实施例四。
在本实施例中，卡牌为一套12张，用有色的塑料膜片作为卡牌本体，各张卡牌上的结构面上设置的纳米结构的DOE元件构成的图案分别为《红楼梦》中的人物金陵十二钗，每张卡牌上的DOE元件的纳米结构的蚀刻深度和阶数相同。在这个实施例中，给出了本发明提供的微纳米结构卡牌的另一种方案，即一套卡牌中各张上的微纳米结构上的区别信息还是相互有关联性，也可以有连贯性，但不是游戏牌。开发出这样的套牌，能够更宽地开拓出本发明提供的卡牌的使用范围。
 本实施例提供的金陵十二钗的套牌可以成套销售，也可以拆开销售。
 本发明是首次提出用DOE或HDOE在透明塑料膜片上设计图案制成成套的卡牌，其上的微纳米结构上记载的区别信息，各张卡牌之间的区别信息有连贯性和/或逻辑关系，可以制作成游戏牌等，给这类游戏牌增加了新的表现形式和新的品种。而进一步地，为了适应游戏牌的防窥要求，本发明创造性地通过调节各张卡牌上的微纳米结构，例如蚀刻深度、微纳米结构的阶数等，还可以通过调整塑料膜片的透光程度而使用有色塑料膜片和在塑料膜片上设置镀膜层。综上种种措施，可以使得卡牌360°全方位防窥。
 对于例如游戏牌，各张卡牌的图案复杂程度相差很大，可以通过调整各张卡牌的光刻次数也就是微纳米结构的阶数手段来防窥；对于一套卡牌，各张卡牌的图案复杂程度比较接近的，可以通过调整各张卡牌上微纳米结构的蚀刻深度的手段来防窥。使用有色透明膜片或在卡牌上设置镀膜层，调整卡牌表面视觉色差效果很好，还可以提高其美观性。
 上述实施例仅用来进一步说明本发明的一种微纳米结构卡牌及其使用方法，但本发明并不局限于实施例，凡是依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化与修饰，均落入本发明技术方案的保护范围内。

Claims (16)

  1. 一种微纳米结构卡牌，其特征在于：其包括若干个透光的塑料膜片制成的卡牌本体，所述卡牌本体的一侧表面为结构面，其背面为非结构面，在所述结构面成型有复数个重复排列的光栅微纳米结构，所述光栅微纳米结构上载有区别信息，一套卡牌组中的各张卡牌上的区别信息的内容互不相同，所述光栅微纳米结构为衍射光学元件。
  2. 根据权利要求1所述的一种微纳米结构卡牌，其特征在于：调整各张卡牌上的光栅微纳米结构的蚀刻深度，使得在普通光线下，从任何角度通过肉眼看，一套卡牌组中各张卡牌成型有光栅微纳米结构的区域面上无视觉色差。
  3. 根据权利要求2所述的一种微纳米结构卡牌，其特征在于：所述光栅微纳米结构的蚀刻深度根据各张卡牌区别信息的复杂程度而不尽相同，区别信息较简单的卡牌上光栅微纳米结构的蚀刻深度较深，区别信息较复杂的卡牌上光栅微纳米结构的蚀刻深度较浅。
  4. 根据权利要求3所述的一种微纳米结构卡牌，其特征在于：所述各张卡牌上的所述蚀刻深度在0.1um~3um之间。
  5. 根据权利要求1所述的一种微纳米结构卡牌，其特征在于：调整各张卡牌上的光栅微纳米结构的蚀刻阶数，使得在普通光线下，从任何角度通过肉眼看，一套卡牌组中各张卡牌成型有光栅微纳米结构的区域面上无视觉色差。
  6. 根据权利要求5所述的一种微纳米结构卡牌，其特征在于：所述光栅微纳米结构的阶数根据各张卡牌区别信息的复杂程度而不尽相同；区别信息较简单的卡牌上光栅微纳米结构的阶数较多，区别信息较复杂的卡牌上光栅微纳米结构的阶数较少。
  7. 根据权利要求6所述的一种微纳米结构卡牌，其特征在于：所述各张卡牌上的所述结构面上的所述光栅微纳米结构是光刻1至5次之间，形成二阶、四阶、八阶、十六阶或三十二阶的光栅微纳米结构。
  8. 根据权利要求1所述的一种微纳米结构卡牌，其特征在于：调整各张卡牌上光栅微纳米结构的蚀刻阶数和蚀刻深度，使得在普通光线下，从任何角度通过肉眼看，一套卡牌组中各张卡牌成型有光栅微纳米结构的区域面上无视觉色差。
  9. 根据权利要求1所述的一种微纳米结构卡牌，其特征在于：所述塑料膜片采用有色透光材料制成，使得在普通光线下，从任何角度通过肉眼看，一套卡牌组中各张卡牌成型有光栅微纳米结构的区域面上无视觉色差。
  10. 根据权利要求1所述的一种微纳米结构卡牌，其特征在于：在各张卡牌成型有光栅微纳米结构的区域上设置镀膜层，使得在普通光线下，从任何角度通过肉眼看，一套卡牌组中各张卡牌成型有光栅微纳米结构的区域面上无视觉色差。
  11. 根据权利要求10所述的一种微纳米结构卡牌，其特征在于：所述镀膜层为有色透光膜层，使所述卡牌的透光率参数为20~90%。
  12. 根据权利要求1所述的一种微纳米结构卡牌，其特征在于：所述结构面上的光栅微纳米结构的单元大小在（0.5~2]毫米×（0.5~2]毫米以内重复排列。
  13. 根据权利要求1所述的一种微纳米结构卡牌，其特征在于：所述光栅微纳米结构为全息衍射光学元件。
  14. 根据权利要求1所述的一种微纳米结构卡牌的使用方法，其特征在于：在普通光线下，从任何角度通过肉眼看，一套卡牌组中各张卡牌成型有光栅微纳米结构的区域在视觉面上无视觉色差，透过塑料膜片看点光源以读取所述区别信息。
  15. 根据权利要求1所述的一种微纳米结构卡牌的使用方法，其特征在于：在普通光线下，从任何角度通过肉眼看，一套卡牌组中各张卡牌成型有光栅微纳米结构的区域在视觉面上无视觉色差，通过点光源照射在光栅微纳米结构的区域上呈现出所述区别信息。
  16. 一种微纳米结构卡牌，其特征在于：其包括若干个透光的塑料膜片制成的卡牌本体，所述卡牌本体的一侧表面为结构面，其背面为非结构面；在所述结构面成型有复数个重复排列的微纳米结构，所述微纳米结构上载有区别信息，各张卡牌结构面上的所述微纳米结构载有的区别信息不同，但各张卡牌上的区别信息构成的图案在内容上有逻辑性的关联，使得所有卡牌组成一套卡牌组。
PCT/CN2021/098785 2020-06-16 2021-06-08 一种微纳米结构卡牌及其使用方法 WO2021254208A1 (zh)

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