JP2000025373A - Truth or falsehood decider and method for using it - Google Patents
Truth or falsehood decider and method for using itInfo
- Publication number
- JP2000025373A JP2000025373A JP19436698A JP19436698A JP2000025373A JP 2000025373 A JP2000025373 A JP 2000025373A JP 19436698 A JP19436698 A JP 19436698A JP 19436698 A JP19436698 A JP 19436698A JP 2000025373 A JP2000025373 A JP 2000025373A
- Authority
- JP
- Japan
- Prior art keywords
- polarized light
- light
- authenticity
- linearly polarized
- determination
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Liquid Crystal (AREA)
- Printing Methods (AREA)
- Polarising Elements (AREA)
- Credit Cards Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、商品券その他の金
券類等の真正品、偽造品を判別するための真偽判定体及
びその使用方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an authenticity discriminating body for discriminating a genuine product or a counterfeit product such as a gift certificate or other vouchers, and a method of using the same.
【０００２】[0002]
【従来の技術】従来から、この種の金券類等の偽造防止
を図るために、見る角度によって、色彩が変化する色彩
変化部を設けた偽造防止印刷物が普及してきている。こ
のような色彩変化部は、例えば、パールインキなどのよ
うに、見る角度によって色彩が変化する色彩変化インキ
を印刷することで形成している。パールインキは、薄膜
状の金属粒子などを顔料として含んでおり、この金属粒
子によって光を多重反射する。この反射された光は、金
属粒子の厚さによって、光の波長、すなわち色が決ま
り、この光が互いに干渉しあうことで、色彩変化を生じ
る。2. Description of the Related Art Conventionally, in order to prevent forgery of such kind of cash vouchers and the like, forgery-prevention printed matter provided with a color changing portion that changes color depending on a viewing angle has been widely used. Such a color changing portion is formed by printing a color changing ink, such as a pearl ink, whose color changes depending on the viewing angle. The pearl ink contains metal particles in the form of a thin film as a pigment, and the metal particles reflect light multiple times. The wavelength of the reflected light is determined by the thickness of the metal particles, that is, the color of the reflected light, and the lights interfere with each other to cause a color change.
【０００３】[0003]
【発明が解決しようとする課題】しかし、前述した従来
の印刷物では、同一の色彩変化を生じるものを作製する
ことは、困難であった。すなわち、パールインキによる
色彩変化は、前述の通り、金属粒子の厚さによって決ま
る反射光の干渉作用により生じるので、光が干渉するよ
うに金属粒子の厚さは、近似しながらも、ある程度ばら
ついていることが必要である。そのばらつき具合が異な
ると、色彩変化具合も異なる。However, in the above-mentioned conventional printed matter, it is difficult to produce a printed matter having the same color change. That is, as described above, since the color change due to the pearl ink is caused by the interference effect of the reflected light determined by the thickness of the metal particle, the thickness of the metal particle approximates, but somewhat varies so that the light interferes. It is necessary to be. If the degree of variation is different, the degree of color change is also different.
【０００４】ところが、金属粒子の厚さのばらつき具合
が同程度のものを安定して供給することは困難であり、
生産ロット等が変わると、そのばらつき具合も変わって
しまうことが多いので、同一の色彩変化を生じるものを
作製することは、困難であった。そのため、真正品であ
るにもかかわらず、色彩変化具合が異なるために、偽造
品であると判別されてしまう可能性があった。[0004] However, it is difficult to stably supply metal particles having similar thickness variations.
If the production lot changes, the degree of the variation often changes, and it is difficult to produce a product that produces the same color change. For this reason, there is a possibility that the product is determined to be a counterfeit because the degree of color change is different even though the product is genuine.
【０００５】本発明の課題は、簡単かつ確実に、真偽判
定を行うことができる真偽判定体とその使用方法を提供
することである。An object of the present invention is to provide a genuine / judgment object which can easily and surely judge genuineness and its use.
【０００６】[0006]
【課題を解決するための手段】本発明は、以下のような
解決手段により、前記課題を解決する。なお、理解を容
易にするために、本発明の実施形態に対応する符号を付
して説明するが、これに限定されるものではない。前記
課題を解決するために、請求項１の発明は、基材（１
１）と、基材（１１）の一方の面に形成され、入射した
光（５０）のうち、左回り偏光（５１）又は右回り偏光
（５２）のいずれか一方の光（５１）のみを反射する光
選択反射層（１２）と、光選択反射層（１２）の少なく
とも一部に形成され、真正品を判定する判定情報を備え
る判定部（１２ａ）とを有する真偽判定体である。The present invention solves the above-mentioned problems by the following means. In addition, in order to make it easy to understand, description is given with reference numerals corresponding to the embodiment of the present invention, but the present invention is not limited to this. In order to solve the above problem, the invention according to claim 1 includes a substrate (1)
1) and one of the left-handed polarized light (51) and the right-handed polarized light (52) out of the incident light (50) formed on one surface of the base material (11). The authenticity determination body includes a light selective reflection layer (12) that reflects light and a determination unit (12a) that is formed on at least a part of the light selection reflection layer (12) and includes determination information for determining authenticity.
【０００７】請求項２の発明は、基材（１１）と、基材
（１１）の一方の面の一の部分に形成され、入射した光
（５０）のうち、左回り偏光（５１）又は右回り偏光
（５２）のいずれか一方の光（５１）のみを反射する第
１の光選択反射層（１２−１）と、基材（１１）の一方
の面の他の部分に形成され、入射した光（５０）のう
ち、左回り偏光（５１）又は右回り偏光（５２）のいず
れか他方の光（５２）のみを反射する第２の光選択反射
層（１２−２）と、第１の光選択反射層（１２−１）の
少なくとも一部に形成され、真正品を判定する第１の判
定情報を備える第１の判定部（１２ａ−１）と、第２の
光選択反射層（１２−２）の少なくとも一部に形成さ
れ、真正品を判定する第２の判定情報を備える第２の判
定部（１２ａ−２）とを有する真偽判定体である。According to a second aspect of the present invention, a left-handed polarized light (51) or a left-handed polarized light (50) of the incident light (50) is formed on the substrate (11) and on one portion of one surface of the substrate (11). A first light selective reflection layer (12-1) that reflects only one light (51) of clockwise polarized light (52) and another portion of one surface of the substrate (11), A second light selective reflection layer (12-2) that reflects only the other light (52) of left-handed polarized light (51) or right-handed polarized light (52) of the incident light (50); A first determination unit (12a-1) formed on at least a part of the first light selective reflection layer (12-1) and including first determination information for determining authenticity; and a second light selective reflection layer A second determination unit (12a-2) formed on at least a part of (12-2) and provided with second determination information for determining a genuine product. It is an authenticity determination body.
【０００８】請求項３の発明は、請求項１に記載の真偽
判定体の使用方法であって、前記真偽判定体が反射した
光（５１，５２）を直線偏光（６１，６２）に変換する
位相板（３１）と、その位相板（３１）が変換した直線
偏光（６１，６２）のうち、所定の偏光面を有する直線
偏光（６１）のみを透過する偏光子（３２ａ）とを有す
る真偽判定具（３０ａ）を通して見たときに、前記判定
情報が目視可能に現れるときは、真正品であると判定す
ることを特徴とする真偽判定体の使用方法である。According to a third aspect of the present invention, there is provided the method of using the authenticity judgment body according to the first aspect, wherein the light (51, 52) reflected by the authenticity judgment body is converted into linearly polarized light (61, 62). A phase plate (31) to be converted and a polarizer (32a) that transmits only linearly polarized light (61) having a predetermined polarization plane among the linearly polarized light (61, 62) converted by the phase plate (31). A method of using a genuineness / judgment object, characterized in that when the judgment information appears visually when viewed through a genuineness / judgement tool (30a), the genuineness / judgment body is judged to be genuine.
【０００９】請求項４の発明は、請求項１に記載の真偽
判定体の使用方法であって、前記真偽判定体が反射した
光（５１，５２）を直線偏光（６１，６２）に変換する
位相板（３１）と、その位相板（３１）が変換した直線
偏光（６１，６２）のうち、所定の偏光面を有する直線
偏光（６１）のみを透過する偏光子（３２ａ）とを有す
る第１の真偽判定具（３０ａ）と、前記真偽判定体が反
射した光（５１，５２）を直線偏光（６１，６２）に変
換する位相板（３１）と、その位相板（３１）が変換し
た直線偏光（６１，６２）のうち、第１の真偽判定具
（３０ａ）が透過した直線偏光（６１）と異なる直線偏
光（６２）のみを透過する偏光子とを有する第２の真偽
判定具（３０ｂ）とを用いて、第１の真偽判定具（３０
ａ）を通して見ると、前記判定情報が目視可能になっ
て、第２の真偽判定具（３０ｂ）を通して見ると、前記
判定情報が目視不能になるときは、真正品であると判定
することを特徴とする真偽判定体の使用方法である。According to a fourth aspect of the present invention, there is provided the method of using the authenticity determining body according to the first aspect, wherein the light (51, 52) reflected by the authenticity determining body is converted into linearly polarized light (61, 62). A phase plate (31) to be converted and a polarizer (32a) that transmits only linearly polarized light (61) having a predetermined polarization plane among the linearly polarized light (61, 62) converted by the phase plate (31). A first authenticity determination tool (30a), a phase plate (31) for converting the light (51, 52) reflected by the authenticity determination body into linearly polarized light (61, 62), and a phase plate (31) ) Has a polarizer that transmits only linearly polarized light (62) that is different from the linearly polarized light (61) transmitted by the first authenticity determination tool (30a) among the linearly polarized light (61, 62) that has been converted. Using the first authenticity determination tool (30b).
If the judgment information becomes visible when viewed through a) and the judgment information becomes invisible when viewed through the second authenticity judging tool (30b), it is judged to be genuine. This is how to use the authenticity determination body that is the feature.
【００１０】請求項５の発明は、請求項２に記載の真偽
判定体の使用方法であって、前記真偽判定体が反射した
光（５１，５２）を直線偏光（６１，６２）に変換する
位相板（３１）と、その位相板（３１）が変換した直線
偏光（６１，６２）のうち、所定の偏光面を有する直線
偏光（６１）のみを透過する偏光子（３２ａ）とを有す
る第１の真偽判定具（３０ａ）と、前記真偽判定体が反
射した光（５１，５２）を直線偏光（６１，６２）に変
換する位相板（３１）と、その位相板（３１）が変換し
た直線偏光（６１，６２）のうち、第１の真偽判定具
（３０ａ）が透過した直線偏光（６１）と異なる直線偏
光（６２）のみを透過する偏光子（３２ｂ）とを有する
第２の真偽判定具（３０ｂ）とを用いて、第１の真偽判
定具（３０ａ）を通して見ると、前記第１の判定情報が
目視可能になって、第２の判定具（３０ｂ）を通して見
ると、前記第２の判定情報が目視可能になるときは、真
正品であると判定することを特徴とする真偽判定体の使
用方法である。According to a fifth aspect of the present invention, there is provided the method of using the authenticity determining body according to the second aspect, wherein the light (51, 52) reflected by the authenticity determining body is converted into linearly polarized light (61, 62). A phase plate (31) to be converted and a polarizer (32a) that transmits only linearly polarized light (61) having a predetermined polarization plane among the linearly polarized light (61, 62) converted by the phase plate (31). A first authenticity determination tool (30a), a phase plate (31) for converting the light (51, 52) reflected by the authenticity determination body into linearly polarized light (61, 62), and a phase plate (31) ) Is converted to a polarizer (32b) that transmits only linearly polarized light (62) that is different from the linearly polarized light (61) that is transmitted by the first authenticity determination tool (30a). The first authenticity judgment tool (30a) is passed through using the second authenticity judgment tool (30b) When the first determination information becomes visible, and when viewed through the second determination tool (30b), the second determination information becomes visible, it is determined that the product is genuine. This is a method of using a true / false judgment body.
【００１１】[0011]
【発明の実施の形態】以下、図面等を参照して、本発明
の実施の形態について、さらに詳しく説明する。 （第１実施形態）図１は、本発明による真偽判定体の第
１実施形態の使用状態を示す図である。図中、（Ａ）は
正面図、（Ｂ）は（Ａ）のＢ−Ｂ断面図である。本実施
形態の真偽判定体１０は、商品券２０に貼付して使用す
るものである。真偽判定体１０は、基材１１と、光選択
反射層１２と、保護層１３と、接着層１４とを有する。Embodiments of the present invention will be described below in more detail with reference to the drawings. (First Embodiment) FIG. 1 is a diagram showing a usage state of a first embodiment of a true / false judgment body according to the present invention. In the figure, (A) is a front view, and (B) is a BB cross-sectional view of (A). The authenticity judging body 10 of the present embodiment is used by being attached to a gift certificate 20. The authenticity determination body 10 includes a base material 11, a light selective reflection layer 12, a protective layer 13, and an adhesive layer 14.
【００１２】基材１１は、真偽判定体１０の担体となる
基材である。基材１１は、後述する判定部１２ａを形成
する際に、プレス圧力を吸収しない材料が好適であり、
例えば、塩化ビニル、ＰＭＭＡ、ＰＥＴ、ＡＢＳ、ポリ
オレフィン、ＰＥＴ−Ｇ、ポリカーボネート、アクリロ
ニトリル−スチレン共重合体、セルロースプロピオネー
ト、セルロースアセテートブチレートなどの一般的に使
用されるプラスチック材料等を用いるとよい。The substrate 11 is a substrate serving as a carrier of the authenticity determination body 10. The base material 11 is preferably made of a material that does not absorb the pressing pressure when forming the determination unit 12a described below,
For example, generally used plastic materials such as vinyl chloride, PMMA, PET, ABS, polyolefin, PET-G, polycarbonate, acrylonitrile-styrene copolymer, cellulose propionate, and cellulose acetate butyrate may be used. .
【００１３】光選択反射層１２は、入射した光のうち、
左回り偏光又は右回り偏光のいずれか一方の光のみを反
射する層であり、基材１１に形成されている。光選択反
射層１２は、左回り偏光又は右回り偏光のいずれか一方
の光のみを反射するコレステリック液晶（ｃｈｏｌｅｓ
ｔｅｒｉｃ ｌｉｑｕｉｄ ｃｒｙｓｔａｌ（以下、
「ＣＬＣ」という。））インキを使用して、グラビア印
刷などの凹版印刷、オフセット方式などの平版印刷、凸
版印刷、スクリーン印刷又はインクジェット印刷その他
の通常用いられる方法で印刷することで形成することが
できる。The light selective reflection layer 12 is provided for
This layer reflects only one of left-handed polarized light and right-handed polarized light, and is formed on the base material 11. The light selective reflection layer 12 is formed of a cholesteric liquid crystal (choles liquid crystal) that reflects only one of left-handed polarized light and right-handed polarized light.
teric liquid crystal (hereinafter, referred to as
It is called "CLC". )) Ink can be formed by printing by intaglio printing such as gravure printing, lithographic printing such as offset printing, letterpress printing, screen printing or ink jet printing, and other commonly used methods.
【００１４】ＣＬＣインキは、顔料として、左回り偏光
又は右回り偏光のいずれか一方の光のみを反射するＣＬ
Ｃ分子を含んでいる。顔料としてインキに含まれるＣＬ
Ｃ分子は、反射効率及び印刷適性などを考慮して、粒径
及び顔料濃度を適宜選択する必要がある。なお、ＣＬＣ
分子が、入射した光のうち、左回り偏光又は右回り偏光
のいずれか一方の光を反射する理由については、後述す
る。光選択反射層１２は、真正品を判定するための判定
情報を備える判定部１２ａを備えている。The CLC ink is a CL that reflects only one of left-handed polarized light and right-handed polarized light as a pigment.
Contains C molecule. CL contained in ink as pigment
It is necessary to appropriately select the particle size and the pigment concentration of the C molecule in consideration of the reflection efficiency, printability, and the like. In addition, CLC
The reason why the molecule reflects either the left-handed polarized light or the right-handed polarized light of the incident light will be described later. The light selective reflection layer 12 includes a determination unit 12a including determination information for determining a genuine product.
【００１５】判定部１２ａは、真正品を判定するための
判定情報を備える部分であり、光選択反射層１２に形成
されている。判定部１２ａは、金型でプレスされて作製
されるいわゆるエンボス・ホログラムで形成されてい
る。ここでは、判定部１２ａは、判定情報「ＤＮ」の形
に形成されている。また、通常のエンボス・ホログラム
は、回折効率を向上させてホログラムの画像を目視確認
しやすくするために、入射した光の反射率を上げる蒸着
層を設けているが、この真偽判定体１０では、そのよう
な蒸着層を設けなくてもよい。その理由については、後
述する。The judging section 12 a is a section provided with judgment information for judging a genuine product, and is formed on the light selective reflection layer 12. The determination unit 12a is formed of a so-called embossed hologram manufactured by pressing with a mold. Here, the determination unit 12a is formed in the form of the determination information “DN”. In addition, a normal embossed hologram is provided with a vapor deposition layer that increases the reflectance of incident light in order to improve the diffraction efficiency and make it easier to visually confirm the image of the hologram. It is not necessary to provide such a vapor deposition layer. The reason will be described later.
【００１６】保護層１３は、光選択反射層１２、特に、
判定部１２ａのエンボスを外力による損傷から保護する
層であり、光選択反射層１２の上に設けられている。保
護層１２は、判定情報等が目視し易いように、ほぼ透明
である。保護層１３は、セルロース系樹脂、ポリイミド
系樹脂、ポリスチレン系樹脂、ポリエステル系樹脂など
を材料とする。保護層１３は、厚さが５〜２００μｍ程
度で形成される。The protective layer 13 is composed of the light selective reflection layer 12,
It is a layer that protects the emboss of the determination unit 12a from damage due to external force, and is provided on the light selective reflection layer 12. The protective layer 12 is substantially transparent so that the determination information and the like are easily visible. The protective layer 13 is made of a material such as a cellulose resin, a polyimide resin, a polystyrene resin, and a polyester resin. The protective layer 13 is formed with a thickness of about 5 to 200 μm.
【００１７】接着層１４は、真偽判定体１０を商品券等
の真偽判定対象物２０に接着可能にする層である。接着
層１４は、アクリル系接着剤、天然ゴム系接着剤、合成
ゴム系接着剤又はシリコーンゴム系接着剤などを塗布し
て形成することができる。The adhesive layer 14 is a layer that enables the authenticity judgment body 10 to be adhered to the authenticity judgment object 20 such as a gift certificate. The adhesive layer 14 can be formed by applying an acrylic adhesive, a natural rubber adhesive, a synthetic rubber adhesive, a silicone rubber adhesive, or the like.
【００１８】図２は、本発明による真偽判定体に使用す
るＣＬＣ分子の構造を示す模式図である。ここで、ＣＬ
Ｃ分子が、入射した光のなかから、左回り偏光又は右回
り偏光のいずれか一方の光のみを反射する理由につい
て、説明する。図２に示すように、ＣＬＣ分子は、液晶
の分子軸を基準に数度ずつ回転して積み上げられた状態
になっており、その回転方向によって、右又は左螺旋の
構造の液晶分子となる。FIG. 2 is a schematic diagram showing the structure of a CLC molecule used in the authenticity judging body according to the present invention. Where CL
The reason why the C molecule reflects only one of the left-handed polarized light and the right-handed polarized light from the incident light will be described. As shown in FIG. 2, the CLC molecules are stacked by being rotated by several degrees with respect to the molecular axis of the liquid crystal, and have a right or left spiral structure depending on the direction of rotation.
【００１９】液晶分子の螺旋構造と同じ回転方向の光が
入射した場合は、光が反射し、液晶分子の螺旋構造と逆
の回転方向の光が入射した場合は、光が透過する。自然
光は、左回り偏光と右回り偏光の両方の光を含むので、
液晶分子の螺旋構造と同じ回転方向の偏光のみが反射し
て、逆の回転方向の偏光は、透過する。When light in the same rotation direction as the helical structure of the liquid crystal molecules is incident, the light is reflected, and when light in the rotation direction opposite to the helical structure of the liquid crystal molecules is incident, the light is transmitted. Since natural light contains both left-handed and right-handed polarized light,
Only the polarized light in the same rotational direction as the helical structure of the liquid crystal molecules is reflected, and the polarized light in the opposite rotational direction is transmitted.
【００２０】また、ＣＬＣ分子は、ＣＬＣ分子の１／２
ピッチの波長の光を強く反射することが知られている。
すなわち、このピッチを調整することで、色を調整する
ことができるので、さまざまな色の顔料として使用する
ことができる。The CLC molecule is １ ／ of the CLC molecule.
It is known that light having a pitch wavelength is strongly reflected.
That is, by adjusting the pitch, the color can be adjusted, so that it can be used as a pigment of various colors.
【００２１】図３は、本発明による真偽判定体に使用す
るＣＬＣ分子の光反射の様子を示す模式図である。図
中、線の幅は、光量を表している。すなわち、ＣＬＣ分
子は、上部（入射光側）ほど、反射する光量が多い。こ
こで、真偽判定体１０は、蒸着層を有さなくてもよい理
由について、説明する。図３に示すように、ＣＬＣイン
キは、それぞれのＣＬＣ分子で光を反射するので、ＣＬ
Ｃ分子を含まない通常のエンボス・ホログラム構造に比
べて、反射率が高い。また、判定部１２ａは、金型でプ
レスするエンボス・ホログラムで形成するので、プレス
時に、ＣＬＣ分子の螺旋ピッチが変化して、屈折率変化
を生じ、この屈折率変化によっても、反射を生じる。そ
れらにより、真偽判定体１０は、蒸着層がなくてもよ
い。FIG. 3 is a schematic view showing the state of light reflection of CLC molecules used in the authenticity determination body according to the present invention. In the drawing, the width of the line indicates the light amount. In other words, the CLC molecules reflect a larger amount of light toward the top (incident light side). Here, the reason why the authenticity determination body 10 does not need to have a vapor deposition layer will be described. As shown in FIG. 3, since the CLC ink reflects light on each CLC molecule, CL
Higher reflectivity than a normal embossed hologram structure containing no C molecule. In addition, since the determination unit 12a is formed of an embossed hologram pressed by a mold, the helical pitch of the CLC molecules changes during pressing, causing a change in the refractive index, and the change in the refractive index also causes reflection. Accordingly, the authenticity determination body 10 does not need to have a vapor deposition layer.
【００２２】図４は、本発明による真偽判定体の真偽判
別を説明する図である。なお、本実施形態では、真偽判
定体１０は、左回り偏光５１を反射するＣＬＣ分子を含
んで着色されている場合を挙げて説明する。真偽判定体
１０は、真偽判定具３０ａ，３０ｂで、真偽判定され
る。第１真偽判定具３０ａは、位相板３１と、偏光子３
２ａとを有する。第２真偽判定具３０ｂは、位相板３１
と、偏光子３２ｂとを有する。FIG. 4 is a diagram for explaining the authenticity judgment of the authenticity judging body according to the present invention. In the present embodiment, a case where the authenticity determination body 10 is colored including CLC molecules that reflect the counterclockwise polarized light 51 will be described. The authenticity judging body 10 is authenticated by authenticity judging tools 30a and 30b. The first authenticity determination tool 30a includes a phase plate 31 and a polarizer 3
2a. The second authenticity determination tool 30 b includes a phase plate 31.
And a polarizer 32b.
【００２３】位相板３１は、入射光に位相差を与えるた
めの光学板であって、本実施形態では、いわゆる１／４
波長板を使用している。１／４波長板は、円偏光を直線
偏光に、また、直線偏光を円偏光に、変換する性質を有
する光学板である。位相板３１は、光選択反射層１２で
反射した左回り偏光５１を透過して、上下方向の偏光面
を有する直線偏光６１に変換する。また、位相板３１
は、光選択反射層１２を透過して、基材１１で反射した
右回り偏光５２を透過して、左右方向の偏光面を有する
直線偏光６２に変換する。The phase plate 31 is an optical plate for giving a phase difference to the incident light.
Wave plate is used. A quarter-wave plate is an optical plate having the property of converting circularly polarized light into linearly polarized light and converting linearly polarized light into circularly polarized light. The phase plate 31 transmits the left-handed polarized light 51 reflected by the light selective reflection layer 12 and converts it into linearly polarized light 61 having a vertically polarized plane. Also, the phase plate 31
Is transmitted through the light selective reflection layer 12, transmits the clockwise polarized light 52 reflected by the base material 11, and converts it into linearly polarized light 62 having a horizontal plane of polarization.
【００２４】偏光子３２ａ，３２ｂは、通常は自然光を
直線偏光に変換する素子であり、また、直線偏光が入射
されたときは、特定の偏光面を有するもののみを透過す
る。偏光子３２ａは、上下方向の偏光面を有する直線偏
光を透過する偏光子であって、直線偏光６１を透過する
が、直線偏光６２を透過しない。偏光子３２ｂは、左右
方向の偏光面を有する直線偏光を透過する偏光子であっ
て、直線偏光６２を透過するが、直線偏光６１を透過し
ない。The polarizers 32a and 32b are usually elements for converting natural light into linearly polarized light, and when linearly polarized light is transmitted, only those having a specific polarization plane are transmitted. The polarizer 32a is a polarizer that transmits linearly polarized light having a vertical polarization plane, and transmits linearly polarized light 61 but does not transmit linearly polarized light 62. The polarizer 32b is a polarizer that transmits linearly polarized light having a plane of polarization in the left-right direction, and transmits linearly polarized light 62 but does not transmit linearly polarized light 61.
【００２５】自然光５０は、左回り偏光５１及び右回り
偏光５２を含んでいる。自然光５０が、真偽判定体１０
に入射すると、以下のようになる。 （１）真偽判定体１０に入射した自然光５０のうち、左
回り偏光５１は、光選択反射層１２で反射する。一方、
右回り偏光５２は、光選択反射層１２を透過して、基材
１１で反射する。 （２）（１）において、光選択反射層１２で反射した左
回り偏光５１は、第１真偽判定具３０ａを透過できる
が、第２真偽判定具３０ｂを透過できない。ここで、光
選択反射層１２のうち、判定部１２ａで反射した左回り
偏光と、判定部１２ａ以外の部分で反射した左回り偏光
とは、進行方向が異なるので、それによって明暗差が生
じて、判定情報「ＤＮ」が目視可能になる。 （３）（１）において、基材１１で反射した右回り偏光
５２は、第２真偽判定具３０ｂを透過できるが、第１真
偽判定具３０ａは、透過できない。基材１１で反射した
右回り偏光５２は、ＣＬＣ分子の１／２ピッチ波長の光
であるので、その光を真偽判定体１０の色として確認す
ることができる。The natural light 50 includes left-handed polarized light 51 and right-handed polarized light 52. The natural light 50 is used to determine whether the authenticity
When it is incident on (1) The counterclockwise polarized light 51 of the natural light 50 incident on the authenticity determination body 10 is reflected by the light selective reflection layer 12. on the other hand,
The clockwise polarized light 52 transmits through the light selective reflection layer 12 and is reflected by the substrate 11. (2) In (1), the counterclockwise polarized light 51 reflected by the light selective reflection layer 12 can pass through the first authenticity judging tool 30a, but cannot pass through the second authenticity judging tool 30b. Here, in the light selective reflection layer 12, since the counterclockwise polarized light reflected by the determination unit 12a and the counterclockwise polarized light reflected by a part other than the determination unit 12a have different traveling directions, a difference in brightness occurs. , The determination information “DN” becomes visible. (3) In (1), the clockwise polarized light 52 reflected by the base material 11 can pass through the second authenticity judgment tool 30b, but cannot pass through the first authenticity judgment tool 30a. The clockwise polarized light 52 reflected by the base material 11 is light having a half pitch wavelength of the CLC molecule, so that the light can be confirmed as the color of the authenticity determination body 10.
【００２６】このようにして、真偽判定具を変えること
で、真偽判定体１０の見え方が変わる。As described above, the appearance of the authenticity judging body 10 is changed by changing the authenticity judging tool.
【００２７】（使用方法）図５は、本発明による真偽判
定体の第１実施形態の使用方法を示している図である。
真偽判定体１０は、以下のように使用して、真偽判定を
行う。 （１）使用者は、真偽判定を行う前に、真偽判定体１０
を目視する（図Ａ）。このとき、真偽判定体１０は、自
然光を反射するため、反射光量が多く、判定情報「Ｄ
Ｎ」の文字は、マスキングされる。そのため、使用者
は、判定情報「ＤＮ」の文字を明瞭に見ることはできな
い。(Method of Use) FIG. 5 is a diagram showing a method of using the authenticity judging body according to the first embodiment of the present invention.
The authenticity determination body 10 performs the authenticity determination by using as follows. (1) The user sets the authenticity judgment body 10 before making the authenticity judgment.
Is visually observed (FIG. A). At this time, since the authenticity determination body 10 reflects natural light, the reflected light amount is large, and the determination information “D
The letter "N" is masked. Therefore, the user cannot clearly see the character of the determination information “DN”.
【００２８】（２）（１）で真偽判定体１０を確認した
使用者は、第１真偽判定具３０ａを通して、真偽判定体
１０を目視する。このとき、使用者は、光選択反射層１
２で反射した左回り偏光５１を見ることができる。光選
択反射層１２のうち、判定部１２ａで反射した左回り偏
光と、判定部１２ａ以外の部分で反射した左回り偏光と
は、進行方向が異なるので、それが明暗差になる。さら
に、基材１１で反射した右回り偏光５２は、第１真偽判
定具３０ａによってカットされるので、使用者は、判定
情報「ＤＮ」をハッキリと目視確認することができる
（図Ｂ）。(2) After confirming the authenticity judging body 10 in (1), the user looks at the authenticity judging body 10 through the first authenticity judging tool 30a. At this time, the user selects the light selective reflection layer 1
The counterclockwise polarized light 51 reflected at 2 can be seen. In the light selective reflection layer 12, the counterclockwise polarized light reflected by the determination unit 12a and the counterclockwise polarized light reflected by a portion other than the determination unit 12a have different traveling directions, and therefore, the difference is the brightness difference. Furthermore, since the clockwise polarized light 52 reflected by the base material 11 is cut by the first authenticity determination tool 30a, the user can clearly and visually confirm the determination information “DN” (FIG. B).
【００２９】（３）（２）で判定情報「ＤＮ」を目視確
認した使用者は、第２真偽判定具３０ｂを通して、真偽
判定体１０を見る。このとき、使用者は、基材１１で、
反射した右回り偏光５２を見ることができる。この反射
光は、ＣＬＣ分子の１／２ピッチ波長の光であるため、
その光を真偽判定体１０の色として確認することができ
る（図Ｃ）。(3) The user who has visually confirmed the judgment information "DN" in (2) looks at the authenticity judging body 10 through the second authenticity judging device 30b. At this time, the user uses the base material 11
The reflected clockwise polarized light 52 can be seen. Since this reflected light is light having a half pitch wavelength of CLC molecules,
The light can be confirmed as the color of the authenticity determination body 10 (FIG. C).
【００３０】本実施形態によれば、入射した光のうち、
左回り偏光５１又は右回り偏光５２のいずれか一方の光
のみを反射する光選択反射層１２と、判定情報を備える
判定部１２ａとを有するので、光選択反射層１２が反射
する光を透過する真偽判定具３０ａを通して見ると、判
定情報が目視可能になるため、簡単に真偽判定すること
ができる。また、判定部１２ａは、エンボス・ホログラ
ムで形成されているので、判定情報は、虹色を呈するた
め、視覚効果が高い。さらに、判定部１２ａは、ＣＬＣ
インキ層の上にプレス形成されているので、蒸着層がな
くても、ホログラム効果を有する。According to this embodiment, of the incident light,
Since the light selective reflection layer 12 includes the light selective reflection layer 12 that reflects only one of the left-handed polarized light 51 and the right-handed polarized light 52 and the determination unit 12a including the determination information, the light reflected by the light selective reflection layer 12 is transmitted. When viewed through the authenticity determination tool 30a, the determination information becomes visible, so that the authenticity can be easily determined. In addition, since the determination unit 12a is formed of an embossed hologram, the determination information has a rainbow color, and thus has a high visual effect. Further, the determination unit 12a determines that the CLC
Since it is press-formed on the ink layer, it has a hologram effect even without a vapor deposition layer.
【００３１】（第２実施形態）図６は、本発明による真
偽判定体の第２実施形態の使用方法を示している図であ
る。なお、以下に示す各実施形態では、前述した第１実
施形態と同様の機能を果たす部分には、同一の符号を付
して、重複する説明を適宜省略する。真偽判定体１０−
２の光選択反射層は、左側が左回り偏光のみを反射する
ＣＬＣインキで印刷された第１光選択反射層１２−１で
あり、右側が右回り偏光のみを反射するＣＬＣインキで
印刷された第２光選択反射層１２−２である。このよう
に、光選択反射層は、異なるＣＬＣインキを塗り分けて
印刷されている。真偽判定体１０−２は、以下のように
使用して、真偽判定を行う。 （１）使用者は、真偽判定を行う前に、真偽判定体１０
−２を目視確認する（図Ａ）。このとき、使用者は、判
定情報「ＤＮ」の文字をうっすらと目視することができ
る。(Second Embodiment) FIG. 6 is a diagram showing a method of using a true / false judgment body according to a second embodiment of the present invention. In the following embodiments, portions that perform the same functions as in the above-described first embodiment will be denoted by the same reference numerals, and redundant description will be omitted as appropriate. Authenticity body 10-
The light selective reflection layer of No. 2 is the first light selective reflection layer 12-1 printed on the left with a CLC ink that reflects only left-handed polarized light, and the right side is printed with a CLC ink that reflects only right-handed polarized light. The second light selective reflection layer 12-2. Thus, the light selective reflection layer is printed by applying different CLC inks separately. The authenticity judgment body 10-2 performs an authenticity judgment by using as follows. (1) The user sets the authenticity judgment body 10 before making the authenticity judgment.
-2 is visually confirmed (FIG. A). At this time, the user can slightly see the character of the determination information “DN”.
【００３２】（２）（１）で真偽判定体１０−２を確認
した使用者は、第１真偽判定具３０ａを通して、真偽判
定体１０−２を見る。このとき、使用者は、第１光選択
反射層１２−１で反射した左回り偏光５１によって、第
１判定情報「Ｄ」を明瞭に目視することができる（図
Ｂ）。(2) The user who has confirmed the authenticity judging body 10-2 in (1) looks at the authenticity judging body 10-2 through the first authenticity judging device 30a. At this time, the user can clearly see the first determination information “D” by the counterclockwise polarized light 51 reflected by the first light selective reflection layer 12-1 (FIG. B).
【００３３】（３）（２）で第１判定情報「Ｄ」を確認
した使用者は、第２真偽判定具３０ｂを通して、真偽判
定体１０−２を見る。このとき、使用者は、第２光選択
反射層１２−２で反射した右回り偏光５２によって、第
２判定情報「Ｎ」を明瞭に目視することができる（図
Ｃ）。(3) The user who has checked the first judgment information "D" in (2) looks at the authenticity judging body 10-2 through the second authenticity judging device 30b. At this time, the user can clearly see the second determination information “N” by the clockwise polarized light 52 reflected by the second light selective reflection layer 12-2 (FIG. C).
【００３４】本実施形態によれば、光選択反射層１２−
１，１２−２は、インキを塗り分けて形成するので、異
なる真偽判定具３０ａ，３０ｂを使用して、異なる判定
情報を確認することができため、より正確に真偽判定す
ることができる。また、光選択反射層１２−１，１２−
２は、異なるインキを塗り分けて形成するので、意匠性
に優れたものが作製できる。なお、光選択反射層１２−
１，１２−２は、デザインによって、複数箇所に分けて
配置したり、それぞれ色を変えてもよく、そのようにす
れば、一層意匠性に優れたものが作製できる。According to the present embodiment, the light selective reflection layer 12-
Since Nos. 1 and 12-2 are formed by applying different inks, different judgment information can be confirmed using different authenticity judging tools 30a and 30b, so that the authenticity can be judged more accurately. . The light selective reflection layers 12-1 and 12-
2 is formed by applying different inks separately, so that an excellent design can be produced. The light selective reflection layer 12-
Depending on the design, 1, 12-2 may be separately arranged at a plurality of positions or may be changed in color. In such a case, a product having more excellent design can be produced.
【００３５】（第３実施形態）図７は、本発明による真
偽判定体の第３実施形態の使用状態を示している図であ
る。本実施形態の真偽判定体１０−３は、社員証２０の
顔写真部に貼付して使用するものである。(Third Embodiment) FIG. 7 is a diagram showing a use state of a third embodiment of the authenticity judgment body according to the present invention. The authenticity judging body 10-3 of the present embodiment is used by being attached to the face photograph portion of the employee ID card 20.
【００３６】真偽判定体１０−３は、社員証２０の顔写
真が見やすいように、ほぼ透明に作製されている。すな
わち、基材１１及び接着層１４は、ほぼ透明のもので形
成されている。また、光選択反射層１２は、左回り偏光
のみを反射するＣＬＣ分子を含んでいるが、その含有密
度は、第１実施形態の真偽判定体１０に比較して、疎で
あるため、社員証２０の顔写真が見やすい。The authenticity judgment body 10-3 is made almost transparent so that the face photograph of the employee ID card 20 can be easily seen. That is, the base material 11 and the adhesive layer 14 are formed of substantially transparent materials. The light selective reflection layer 12 includes CLC molecules that reflect only left-handed polarized light, but the density is lower than that of the authenticity determination body 10 of the first embodiment. It is easy to see the face photo of the proof.
【００３７】（使用方法）図８は、本発明による真偽判
定体の第３実施形態の使用方法を示している図である。
真偽判定体１０−３は、以下のように使用して、真偽判
定を行う。 （１）使用者は、真偽判定を行う前に、真偽判定体１０
−３を目視確認する（図Ａ）。このとき、使用者は、社
員証２０の顔写真と、うっすらとした判定情報「ＤＮ」
の文字とを目視することができる。(Usage Method) FIG. 8 is a diagram showing a method of using the third embodiment of the authenticity judgment body according to the present invention.
The authenticity judgment body 10-3 performs an authenticity judgment by using as follows. (1) The user sets the authenticity judgment body 10 before making the authenticity judgment.
-3 is visually confirmed (FIG. A). At this time, the user enters the face photograph of the employee ID card 20 and the faint determination information “DN”.
Can be visually observed.
【００３８】（２）（１）で真偽判定体１０−３を確認
した使用者は、光選択反射層１２で反射した左回り偏光
５１のみを透過する真偽判定具３０ａを通して、真偽判
定体１０−３を見る。このとき、使用者は、判定部１２
ａの判定情報「ＤＮ」を明瞭に目視することができる。
また、社員証２０の顔写真で反射した右回り偏光５２
は、真偽判定具３０ａを透過することができないので、
顔写真は見えない（図Ｂ）。(2) The user who has confirmed the authenticity determining body 10-3 in (1) passes through the authenticity judging device 30a which transmits only the counterclockwise polarized light 51 reflected by the light selective reflection layer 12, and judges the authenticity. Look at body 10-3. At this time, the user determines
The determination information “DN” of “a” can be clearly seen.
In addition, the clockwise polarized light 52 reflected on the photograph of the face of the employee ID card 20.
Cannot pass through the authenticity determination tool 30a,
The face photograph is not visible (Figure B).
【００３９】本実施形態によれば、基材１１及び接着層
１４は、ほぼ透明であるとともに、光選択反射層１２が
含有しているＣＬＣ分子は、疎であるので、真偽判定具
３０ａを通して見ない場合に、社員証２０の顔写真が見
やすい。また、真偽判定具３０ａを通して見ると、判定
部１２ａの判定情報「ＤＮ」を明瞭に目視することがで
きるので、簡単に真偽判定することができる。According to the present embodiment, the base material 11 and the adhesive layer 14 are almost transparent, and the CLC molecules contained in the light selective reflection layer 12 are sparse. When not looking, the face photograph of the employee ID card 20 is easy to see. Further, when viewed through the authenticity judging device 30a, the judgment information "DN" of the judging unit 12a can be clearly seen, so that the authenticity can be easily judged.
【００４０】（変形形態）以上説明した実施形態に限定
されることなく、種々の変形や変更が可能であって、そ
れらも本発明の均等の範囲内である。例えば、判定部１
２ａは、回折格子により形成してもよい。また、保護層
１３は、光選択反射層１２に外力が加わらない等によ
り、損傷する恐れがないときは、設けなくてもよい。ま
た、図９に示すように、商品券にスレッドとして、真偽
判定体１０をすき込んでもよい。そのようにすれば、接
着層１４は、不用である。(Modifications) Various modifications and changes are possible without being limited to the above-described embodiment, and these are also within the equivalent scope of the present invention. For example, the determination unit 1
2a may be formed by a diffraction grating. The protective layer 13 may not be provided when there is no possibility that the light selective reflection layer 12 is damaged due to no external force or the like. Further, as shown in FIG. 9, the authenticity judging body 10 may be inserted into the gift certificate as a thread. In that case, the adhesive layer 14 is unnecessary.
【００４１】さらに、図１０（Ａ）に示すように、基材
１１を最表面に配置して、商品券等に貼付してもよい。
また、図１０（Ｂ）に示すように、基材１１と、光選択
反射層１２との間に剥離層１５を設けて転写箔構造とし
てもよい。なお、いずれの場合においても、光選択反射
層１２を保護する保護層１３を設けてもよい。Further, as shown in FIG. 10A, the base material 11 may be arranged on the outermost surface and affixed to a gift certificate or the like.
Further, as shown in FIG. 10B, a transfer foil structure may be provided by providing a release layer 15 between the base material 11 and the light selective reflection layer 12. In any case, a protective layer 13 for protecting the light selective reflection layer 12 may be provided.
【００４２】[0042]
【発明の効果】以上詳しく説明したように、請求項１の
発明によれば、入射した光のうち、左回り偏光又は右回
り偏光のいずれか一方の光のみを反射する光選択反射層
と、真正品を判定する判定情報を備える判定部とを有す
るので、真偽判定具を通して見ると判定情報が目視可能
になり、真偽判定することができる。As described above in detail, according to the first aspect of the present invention, a light selective reflection layer that reflects only one of left-handed polarized light and right-handed polarized light among incident light, Since there is provided a determination unit provided with determination information for determining authenticity, the determination information becomes visible when viewed through a true / false determination tool, and the authenticity can be determined.
【００４３】請求項２の発明によれば、入射した光のう
ち、左回り偏光又は右回り偏光のいずれか他方の光のみ
を反射する第１の光選択反射層と、第２の光選択反射層
と、判定情報を備える第１の判定部と、第２の判定情報
を備える第２の判定部とを有するので、より正確に真偽
判定することができる。According to the second aspect of the present invention, the first and second light selective reflection layers reflect only one of the left-handed polarized light and the right-handed polarized light out of the incident light. Since it has the layer, the first determination unit provided with the determination information, and the second determination unit provided with the second determination information, it is possible to more accurately determine the authenticity.
【００４４】請求項３の発明によれば、真偽判定体が反
射した光を直線偏光に変換する位相板と、その位相板が
変換した直線偏光のうち、所定の偏光面を有する直線偏
光のみを透過する偏光子とを有する真偽判定具を通して
見たときに、基材に表示されている情報が目視不能にな
るとともに、判定情報が目視可能に現れるときは、真正
品であると判定するので、簡単に真偽判定することがで
きる。According to the third aspect of the present invention, the phase plate for converting the light reflected by the authenticity judging body into linearly polarized light, and of the linearly polarized light converted by the phase plate, only the linearly polarized light having a predetermined polarization plane is used. When the information displayed on the base material becomes invisible when viewed through a true / false judgment tool having a polarizer that transmits light, and when the judgment information appears visibly, it is judged to be a genuine product. Therefore, the authenticity can be easily determined.
【００４５】請求項４の発明によれば、真偽判定体が反
射した光を直線偏光に変換する位相板と、その位相板が
変換した直線偏光のうち、所定の偏光面を有する直線偏
光のみを透過する偏光子とを有する第１の真偽判定具
と、第２の真偽判定具とを用いて見たときに、見え方が
変わることで、真正品であると判定するので、より正確
に真偽判定することができる。According to the fourth aspect of the present invention, the phase plate for converting the light reflected by the authenticity determination body into linearly polarized light, and, of the linearly polarized light converted by the phase plate, only the linearly polarized light having a predetermined polarization plane When viewed using a first authenticity determination tool having a polarizer that transmits light, and a second authenticity determination tool, the appearance is changed, so that it is determined that the product is genuine. Accuracy can be determined accurately.
【００４６】請求項５の発明によれば、真偽判定体が反
射した光を直線偏光に変換する位相板と、その位相板が
変換した直線偏光のうち、所定の偏光面を有する直線偏
光のみを透過する偏光子とを有する第１の真偽判定具
と、第２の真偽判定具とを用いて見たときに、異なる判
定情報が見えることで、真正品であると判定するので、
より正確かつ簡単に真偽判定することができる。According to the fifth aspect of the present invention, the phase plate for converting the light reflected by the authenticity determination body into linearly polarized light, and, of the linearly polarized light converted by the phase plate, only the linearly polarized light having a predetermined polarization plane Since the first and second authenticity judgment tools having a polarizer that transmits the light and the second authenticity judgment tool show different judgment information, it is judged that the article is genuine.
It is possible to determine the authenticity more accurately and easily.
【図１】本発明による真偽判定体の第１実施形態の使用
状態を示す図である。FIG. 1 is a diagram showing a use state of a first embodiment of a true / false judgment body according to the present invention.
【図２】本発明による真偽判定体に使用するＣＬＣ分子
の構造を示す模式図である。FIG. 2 is a schematic diagram showing the structure of a CLC molecule used in the authenticity determination body according to the present invention.
【図３】本発明による真偽判定体に使用するＣＬＣ分子
の光反射の様子を示す模式図である。FIG. 3 is a schematic view showing a state of light reflection of a CLC molecule used in the authenticity determination body according to the present invention.
【図４】本発明による真偽判定体の真偽判別を説明する
図である。FIG. 4 is a diagram for explaining the authenticity judgment of the authenticity judging body according to the present invention.
【図５】本発明による真偽判定体の第１実施形態の使用
方法を示す図である。FIG. 5 is a diagram illustrating a method of using the first embodiment of the authenticity determination body according to the present invention.
【図６】本発明による真偽判定体の第２実施形態の使用
方法を示す図である。FIG. 6 is a diagram illustrating a method of using a second embodiment of the authenticity determination body according to the present invention.
【図７】本発明による真偽判定体の第３実施形態の使用
状態を示す図である。FIG. 7 is a diagram illustrating a use state of a third embodiment of the authenticity determination body according to the present invention.
【図８】本発明による真偽判定体の第３実施形態の使用
方法を示す図である。FIG. 8 is a diagram showing a method of using a third embodiment of the authenticity determination body according to the present invention.
【図９】本発明による真偽判定体の第４実施形態の使用
状態を示す図である。FIG. 9 is a diagram illustrating a usage state of a fourth embodiment of the authenticity determination body according to the present invention.
【図１０】本発明による真偽判定体の他の実施形態を示
す断面図である。FIG. 10 is a sectional view showing another embodiment of the authenticity judging body according to the present invention.
１０ 真偽判定体 １１ 基材 １２ 光選択反射層 １２ａ 判定部 １３ 保護層 １４ 接着層 １５ 剥離層 ２０ 真偽判定対象物（商品券、身分証） ３０ａ，３０ｂ 真偽判定具 ３１ 位相板 ３２ａ，３２ｂ 偏光子 ５０ 自然光 ５１ 左回り偏光 ５２ 右回り偏光 ６１，６２ 直線偏光 DESCRIPTION OF SYMBOLS 10 Authenticity judgment body 11 Base material 12 Light selective reflection layer 12a Judgment part 13 Protective layer 14 Adhesive layer 15 Peeling layer 20 Authenticity judgment object (gift certificate, identification card) 30a, 30b Authenticity judgment tool 31 Phase plate 32a, 32b Polarizer 50 Natural light 51 Left-handed polarization 52 Right-handed polarization 61,62 Linearly polarized light
フロントページの続き Ｆターム(参考） 2C005 HA02 HB10 JA08 JA09 JA18 JA19 JB08 JB09 JB11 JB31 JB40 KA03 KA07 KA35 KA38 KA40 KA61 LA01 LA16 LA19 LB38 2H113 AA06 BA01 BA03 BA05 BA09 BB07 BB22 BB32 BC09 CA00 CA37 CA39 DA47 DA49 Continued on the front page F-term (reference) 2C005 HA02 HB10 JA08 JA09 JA18 JA19 JB08 JB09 JB11 JB31 JB40 KA03 KA07 KA35 KA38 KA40 KA61 LA01 LA16 LA19 LB38 2H113 AA06 BA01 BA03 BA05 BA09 BB07 BB22 BB32 BC39 CA00 CA37
Claims (5)
回り偏光又は右回り偏光のいずれか一方の光のみを反射
する光選択反射層と、 前記光選択反射層の少なくとも一部に形成され、真正品
を判定する判定情報を備える判定部とを有する真偽判定
体。A base material; a light selective reflection layer formed on one surface of the base material and reflecting only one of left-handed polarized light and right-handed polarized light among incident light; A determination unit formed on at least a part of the light selective reflection layer and provided with determination information for determining authenticity.
のうち、左回り偏光又は右回り偏光のいずれか一方の光
のみを反射する第１の光選択反射層と、 前記基材の一方の面の他の部分に形成され、入射した光
のうち、左回り偏光又は右回り偏光のいずれか他方の光
のみを反射する第２の光選択反射層と、 前記第１の光選択反射層の少なくとも一部に形成され、
真正品を判定する第１の判定情報を備える第１の判定部
と、 前記第２の光選択反射層の少なくとも一部に形成され、
真正品を判定する第２の判定情報を備える第２の判定部
とを有する真偽判定体。2. A base material, which is formed on one part of one surface of the base material and reflects only one of left-handed polarized light and right-handed polarized light among incident light. A light selective reflection layer, and a second light selective reflection formed on another portion of one surface of the base material and reflecting only one of the left-handed polarized light and the right-handed polarized light of the incident light. A layer, formed on at least a part of the first light selective reflection layer,
A first determination unit including first determination information for determining a genuine product, formed on at least a part of the second light selective reflection layer,
A true / false determination body having a second determination unit including second determination information for determining authenticity.
であって、 前記真偽判定体が反射した光を直線偏光に変換する位相
板と、その位相板が変換した直線偏光のうち、所定の偏
光面を有する直線偏光のみを透過する偏光子とを有する
真偽判定具を通して見たときに、 前記判定情報が目視可能に現れるときは、真正品である
と判定することを特徴とする真偽判定体の使用方法。3. The method of using a true / false judgment body according to claim 1, wherein: a phase plate that converts light reflected by the true / false judgment body into linearly polarized light; When viewed through a true / false determining tool having a polarizer that transmits only linearly polarized light having a predetermined polarization plane, when the determination information appears to be visible, it is determined to be a genuine product. How to use the authenticity judgment body.
であって、 前記真偽判定体が反射した光を直線偏光に変換する位相
板と、その位相板が変換した直線偏光のうち、所定の偏
光面を有する直線偏光のみを透過する偏光子とを有する
第１の真偽判定具と、 前記真偽判定体が反射した光を直線偏光に変換する位相
板と、その位相板が変換した直線偏光のうち、前記第１
の真偽判定具が透過した直線偏光と異なる直線偏光のみ
を透過する偏光子とを有する第２の真偽判定具とを用い
て、 第１の真偽判定具を通して見ると、前記判定情報が目視
可能になって、第２の真偽判定具を通して見ると、前記
判定情報が目視不能になるときは、真正品であると判定
することを特徴とする真偽判定体の使用方法。4. The method according to claim 1, wherein the phase determination plate converts the light reflected by the determination unit into linearly polarized light, and the linearly polarized light converted by the phase plate. A first authenticity determining device having a polarizer that transmits only linearly polarized light having a predetermined polarization plane, a phase plate that converts light reflected by the authenticity determining body into linearly polarized light, and a phase plate thereof. Of the linearly polarized light converted by
And a second true / false determining tool having a polarizer that transmits only linearly polarized light different from the transmitted linearly polarized light by the true / false determining tool. A method of using a genuineness / judgment object, wherein the genuineness / judgment object is judged to be genuine when the judgment information becomes invisible when viewed through a second authenticity judging tool.
であって、 前記真偽判定体が反射した光を直線偏光に変換する位相
板と、その位相板が変換した直線偏光のうち、所定の偏
光面を有する直線偏光のみを透過する偏光子とを有する
第１の真偽判定具と、 前記真偽判定体が反射した光を直線偏光に変換する位相
板と、その位相板が変換した直線偏光のうち、前記第１
の真偽判定具が透過した直線偏光と異なる直線偏光のみ
を透過する偏光子とを有する第２の真偽判定具とを用い
て、 第１の真偽判定具を通して見ると、前記第１の判定情報
が目視可能になって、第２の真偽判定具を通して見る
と、前記第２の判定情報が目視可能になるときは、真正
品であると判定することを特徴とする真偽判定体の使用
方法。5. The method according to claim 2, wherein the authenticity determination body converts the light reflected by the authenticity determination body into linearly polarized light, and the linearly polarized light converted by the phase plate. A first authenticity determining device having a polarizer that transmits only linearly polarized light having a predetermined polarization plane, a phase plate that converts light reflected by the authenticity determining body into linearly polarized light, and a phase plate thereof. Of the linearly polarized light converted by
And a second authenticity determining device having a polarizer that transmits only linearly polarized light that is different from the transmitted linearly polarized light by the authenticity determining device. When the determination information becomes visible and viewed through a second authenticity determination tool, when the second determination information becomes visible, the authenticity determination body is determined to be a genuine product. How to use
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19436698A JP4278731B2 (en) | 1998-07-09 | 1998-07-09 | Authenticator and its usage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19436698A JP4278731B2 (en) | 1998-07-09 | 1998-07-09 | Authenticator and its usage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000025373A true JP2000025373A (en) | 2000-01-25 |
| JP4278731B2 JP4278731B2 (en) | 2009-06-17 |
Family
ID=16323399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19436698A Expired - Lifetime JP4278731B2 (en) | 1998-07-09 | 1998-07-09 | Authenticator and its usage |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4278731B2 (en) |
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| WO2001023918A1 (en) * | 1999-09-27 | 2001-04-05 | Nippon Mitsubishi Oil Corporation | Optical device and security device |
| WO2002033453A1 (en) * | 2000-10-19 | 2002-04-25 | Nhk Spring Co., Ltd. | Medium for identifying matter to be identified and method for production thereof |
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