JPH06110382A - Hologram, and method and device for confirmation for normal/defective condition using the same - Google Patents
Hologram, and method and device for confirmation for normal/defective condition using the sameInfo
- Publication number
- JPH06110382A JPH06110382A JP26177592A JP26177592A JPH06110382A JP H06110382 A JPH06110382 A JP H06110382A JP 26177592 A JP26177592 A JP 26177592A JP 26177592 A JP26177592 A JP 26177592A JP H06110382 A JPH06110382 A JP H06110382A
- Authority
- JP
- Japan
- Prior art keywords
- hologram
- light
- wavelength
- infrared
- diffracts
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 12
- 238000012790 confirmation Methods 0.000 title claims description 8
- 230000002950 deficient Effects 0.000 title 1
- 230000001678 irradiating effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 230000002265 prevention Effects 0.000 abstract description 3
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000001771 impaired effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000004907 flux Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/0005—Adaptation of holography to specific applications
- G03H1/0011—Adaptation of holography to specific applications for security or authentication
- G03H2001/0016—Covert holograms or holobjects requiring additional knowledge to be perceived, e.g. holobject reconstructed only under IR illumination
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H2222/00—Light sources or light beam properties
- G03H2222/10—Spectral composition
- G03H2222/15—Ultra Violet [UV]
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H2222/00—Light sources or light beam properties
- G03H2222/10—Spectral composition
- G03H2222/16—Infra Red [IR]
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H2223/00—Optical components
- G03H2223/18—Prism
Landscapes
- Holo Graphy (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はホログラムに係わり、特
にホログラムを用いた正否確認方法および確認装置に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hologram, and more particularly to a correctness confirmation method and a confirmation device using the hologram.
【０００２】[0002]
【従来の技術】従来、物の確認のためにバーコードが使
用されているが、このバーコードは黒色、白色で可視光
で見えるものであって、白黒の反射率の差を利用した単
純な原理に基づくものである。また、従来用いられてい
るホログラムによる確認方法としては、マシーンリーダ
ブルホログラムと呼ばれるものがあり、このホログラム
も可視光で認識できるものである。また、クレジットカ
ードやレンタルビデオ等の偽造防止にホログラムが利用
されているが、全て可視光で見えるものであり、単純な
パターンが用いられている。2. Description of the Related Art Conventionally, a bar code has been used for confirming an object, but this bar code is black and white and can be seen with visible light, and it is a simple one utilizing the difference in reflectance between black and white. It is based on the principle. Further, as a conventional confirmation method using a hologram, there is a method called a machine-readable hologram, and this hologram can also be recognized by visible light. Holograms are used to prevent counterfeiting of credit cards and rental videos, but they are all visible with visible light, and simple patterns are used.
【０００３】[0003]
【発明が解決しようとする課題】従来、偽造防止用とし
て用いられているホログラムは可視光で見えるものであ
るめ、偽造されやすいという問題があった。また、バー
コードは可視光が白黒のパターンが見えるものであるた
め、商品の外観を損なうという問題があり、またマシー
ンリーダブルホログラムは可視光が確認できるため、偽
造されやすいという問題があった。Conventionally, holograms used for preventing forgery have a problem that they are easily forged because they are visible with visible light. In addition, the barcode has a problem that the visible light has a black-and-white pattern, which impairs the appearance of the product, and the machine-readable hologram has a problem that the visible light can be confirmed, so that the barcode is easily forged.
【０００４】本発明は上記課題を解決するためのもの
で、可視光では認識できなくすることにより、偽造防止
効果を向上させ、また商品の外観を損なうことのないホ
ログラムを用いた正否確認方法および確認装置を提供す
ることを目的とする。The present invention has been made to solve the above problems, and improves the anti-counterfeiting effect by making it invisible to visible light, and a method of confirming correctness using a hologram that does not impair the appearance of the product and The purpose is to provide a confirmation device.
【０００５】[0005]
【課題を解決するための手段】本発明は、図１に示すよ
うに、例えばカード１に波長選択性ホログラム２を取り
付ける。波長選択性ホログラム２は赤外光あるいは紫外
光を回折し、例えば光源３より赤外光を照射するとそれ
を回折し、赤外光用検知器４により検出する。このホロ
グラムは可視光領域は回折しないため、目視することは
不可能である。なお、赤外光を回折するホログラムは干
渉縞ピッチを長くすることにより得られ、また紫外光を
回折するホログラムは干渉縞ピッチを短くすることによ
り実現することができる。According to the present invention, as shown in FIG. 1, for example, a wavelength selective hologram 2 is attached to a card 1. The wavelength-selective hologram 2 diffracts infrared light or ultraviolet light. For example, when the light source 3 irradiates infrared light, it diffracts the infrared light, and the infrared light detector 4 detects it. Since this hologram does not diffract in the visible light range, it is impossible to see it. A hologram that diffracts infrared light can be obtained by increasing the interference fringe pitch, and a hologram that diffracts ultraviolet light can be achieved by shortening the interference fringe pitch.
【０００６】[0006]
【作用】本発明は可視光では見えず、赤外光領域あるい
は紫外光領域の波長光を照射したときのみ肉眼ではな
く、センサにより確認できるため、ホログラムのある場
所すら目視では分からず、格段に偽造防止効果を高める
ことができる。またバーコードとして利用する場合には
バーコード自体を赤外光あるいは紫外光で照射した時の
み確認できるホログラムとしているため、従来のバーコ
ードよりかなり多くの情報量を含むことができ、さらに
可視光では見えないため、商品の外観を損なわず、かつ
偽造防止効果を高めることもできる。The present invention is invisible to visible light and can be confirmed not only by the naked eye but also by the sensor only when light having a wavelength in the infrared light region or the ultraviolet light region is irradiated. The anti-counterfeiting effect can be enhanced. When used as a barcode, the barcode itself is a hologram that can be confirmed only when it is illuminated with infrared light or ultraviolet light, so it can contain a considerably larger amount of information than conventional barcodes. Since it is not visible, it is possible to enhance the anti-counterfeit effect without impairing the appearance of the product.
【０００７】[0007]
【実施例】次に図２、図３により本発明の実施例を説明
する。感光材料１１として乾式感光材料（デュポン社製
品：オムニデックス３５２）を使用し、レーザ光源１
３，１６としてＫｒレーザ（６４７ｎｍ）を使用し、２
光束干渉により干渉縞ピッチ間隔３２９ｎｍの干渉縞を
形成した。この際の１光束は感材面から５０°の入射角
で、他方の１光束は感材面から３７°の入射角で入射さ
せた。これらの光束はレンズ１４、スリット１５、レン
ズ１７，スリット１８を介し、ガラスブロック１２の面
を通して入射させた。これは入射角が浅いため、全反射
してしまうこと、および表面で屈折してしまうことを避
けるためである。３０ｍＪ／ｃｍ2 の露光量を照射した
後、ＵＶを５０ｍＪ／ｃｍ2 照射し、さらに１００℃で
１時間加熱した。このようにして半導体レーザ（１００
０ｎｍ）を、図３に示すように感材面に垂直入射させる
と、感材面から８０°の方向に回折し、可視光では見え
ない反射型ホログラムを作成することができた。この反
射型ホログラムを公知の方法（例えば、特開平１ー２６
３６８７）により転写加工してバーコード状に加熱転写
することにより、バーコード状のホログラムパターンが
得られた。EXAMPLE An example of the present invention will be described below with reference to FIGS. As the photosensitive material 11, a dry photosensitive material (manufactured by DuPont: Omnidex 352) is used.
Kr laser (647 nm) is used as 3, 16 and 2
Interference fringes with an interference fringe pitch interval of 329 nm were formed by light beam interference. At this time, one light flux was incident from the surface of the photosensitive material at an incident angle of 50 °, and the other one light flux was incident from the surface of the photosensitive material at an incident angle of 37 °. These light beams were made incident through the surface of the glass block 12 through the lens 14, the slit 15, the lens 17, and the slit 18. This is to avoid total reflection and refraction on the surface because the incident angle is shallow. After irradiation with the exposure amount of 30 mJ / cm 2, UV and 50 mJ / cm 2 was irradiated, and further heated at 100 ° C.. In this way, the semiconductor laser (100
(0 nm) was perpendicularly incident on the surface of the photosensitive material as shown in FIG. 3, it was diffracted in the direction of 80 ° from the surface of the photosensitive material, and a reflection hologram invisible to visible light could be formed. This reflection hologram is prepared by a known method (for example, JP-A-1-26).
3687) and heat-transferred in the form of a bar code to obtain a bar code-like hologram pattern.
【０００８】なお、上記説明ではバーコード自体を赤外
領域の再生照明光でのみ回折するホログラムの例を示し
たが、記録時の入射角をいろいろに変え、多重露光する
ことにより多数方向に回折する反射型ホログラムを作成
することができ、多くの情報を含ませることが可能であ
る。もちろんＵＶ領域の場合も同様である。In the above description, an example of the hologram in which the bar code itself is diffracted only by the reproduction illumination light in the infrared region is shown. However, by changing the incident angle at the time of recording variously and performing multiple exposure, the hologram is diffracted in many directions. It is possible to create a reflection hologram that includes a large amount of information. Of course, the same applies to the case of the UV region.
【０００９】図４は本発明の方法を実施するための装置
構成を示したものである。リーダー２０には前述した赤
外光あるいは紫外光のみ回折するホログラム２５が着脱
可能にセットできるようになっている。このホログラム
をセットし、リーダー側に設置さた光源２１、レンズ２
２を通してホログラム２５を照明し、その回折光をセン
サ２３で自動的に読み取り、読み取ったパターンと予め
持っている基準パターンとを判別装置２４で照合し、正
否の判定をする。FIG. 4 shows an apparatus configuration for carrying out the method of the present invention. The above-mentioned hologram 25 that diffracts only infrared light or ultraviolet light can be detachably set on the reader 20. This hologram is set and the light source 21 and lens 2 installed on the reader side
The hologram 25 is illuminated through 2, and the diffracted light is automatically read by the sensor 23, and the read pattern is compared with the reference pattern that is held in advance by the discriminating device 24 to determine whether it is correct or not.
【００１０】なお、本発明は上記説明に限定されるもの
ではなく、プリペードカードシステム、入退場の管理シ
ステム、クレジットカードの偽造防止等に適用できるこ
とは言うまでもない。It is needless to say that the present invention is not limited to the above description, but can be applied to a prepaid card system, an entrance / exit management system, a credit card forgery prevention, and the like.
【００１１】[0011]
【発明の効果】以上のように本発明によれば、波長選択
性ホログラムを用い、回折光の波長が肉眼では見えない
ものであるため、偽造防止効果を格段に高めることがで
き、また可視光に対しては透明であるので、意匠性にも
優れたものである。As described above, according to the present invention, since the wavelength-selective hologram is used and the wavelength of the diffracted light is invisible to the naked eye, the anti-counterfeiting effect can be remarkably enhanced, and the visible light can be enhanced. Since it is transparent, it has excellent design.
【図１】 本発明の基本的構成を説明するための図であ
る。FIG. 1 is a diagram for explaining a basic configuration of the present invention.
【図２】 本発明の実施例を示す図である。FIG. 2 is a diagram showing an example of the present invention.
【図３】 本発明の実施例を示す図である。FIG. 3 is a diagram showing an example of the present invention.
【図４】 本発明の方法を実施するための装置構成を示
した図である。FIG. 4 is a diagram showing an apparatus configuration for carrying out the method of the present invention.
１…カード、２…波長選択性ホログラム、３…光源、４
…ＩＲ検知器、２０…リーダ、２１…光源、２２…レン
ズ、２３…センサ、２４…判別装置 ２５…ホログラム。1 ... Card, 2 ... Wavelength selective hologram, 3 ... Light source, 4
... IR detector, 20 ... Reader, 21 ... Light source, 22 ... Lens, 23 ... Sensor, 24 ... Discrimination device 25 ... Hologram.
Claims (6)
の干渉縞が記録されたホログラム。1. A hologram in which interference fringes having a pitch for diffracting infrared light or ultraviolet light are recorded.
択性ホログラムに赤外光あるいは紫外光を照射し、その
回折光を検出するようにしたことを特徴とするホログラ
ムを用いた正否確認方法。2. A correctness confirmation method using a hologram, characterized in that a wavelength-selective hologram that diffracts infrared light or ultraviolet light is irradiated with infrared light or ultraviolet light and the diffracted light is detected. .
性ホログラムはリップマンホログラムであることを特徴
とするホログラムを用いた正否確認方法。3. The method for confirming correctness using a hologram according to claim 2, wherein the wavelength selective hologram is a Lippmann hologram.
るいは紫外光を照射した時のホログラムの回折光を可視
光に変換して確認することを特徴とするホログラムを用
いた正否確認方法。4. The method for confirming correctness using a hologram according to claim 2, wherein the diffracted light of the hologram when irradiated with infrared light or ultraviolet light is converted into visible light for confirmation.
性ホログラムはバーコード状のホログラムパターンが記
録されるていることを特徴とするホログラムを用いた正
否確認方法。5. The method for confirming correctness using a hologram according to claim 2, wherein the wavelength-selective hologram has a barcode-shaped hologram pattern recorded thereon.
域である波長選択性ホログラムが着脱可能にセットされ
る読み取り装置からなり、該読取装置は、セットされた
波長選択性ホログラムに対して赤外光または紫外光を照
射するための光源と、波長選択性ホログラムからの回折
光を検出するセンサと、センサで検出したホログラムパ
ターンと基準パターンとを照合する判別装置とを備えた
ことを特徴とするホログラムを用いた正否確認装置。6. A reading device in which a wavelength-selective hologram whose diffracted light has a wavelength in the infrared light or ultraviolet light region is detachably set, and the reading device is provided with respect to the set wavelength-selective hologram. A light source for irradiating infrared light or ultraviolet light, a sensor for detecting diffracted light from a wavelength selective hologram, and a discriminating device for collating a hologram pattern detected by the sensor with a reference pattern. Correctness confirmation device using a hologram.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26177592A JPH06110382A (en) | 1992-09-30 | 1992-09-30 | Hologram, and method and device for confirmation for normal/defective condition using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26177592A JPH06110382A (en) | 1992-09-30 | 1992-09-30 | Hologram, and method and device for confirmation for normal/defective condition using the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06110382A true JPH06110382A (en) | 1994-04-22 |
Family
ID=17366530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26177592A Pending JPH06110382A (en) | 1992-09-30 | 1992-09-30 | Hologram, and method and device for confirmation for normal/defective condition using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06110382A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5760961A (en) * | 1995-03-16 | 1998-06-02 | Landis & Gyr Technology Innovation Ag | Optical information carrier having diffractive features and diffraction modulation layers |
| JPH10151643A (en) * | 1996-09-24 | 1998-06-09 | Toppan Printing Co Ltd | Card pitted with lippman hologram and its production |
| JP2010286579A (en) * | 2009-06-10 | 2010-12-24 | Toppan Printing Co Ltd | Display body, adhesive label, article with label, and authenticity determination device |
| EP3778255A3 (en) * | 2019-08-13 | 2021-04-21 | Bundesdruckerei GmbH | Valuable or security product, method for its production and device for reconstruction and acquisition of a reflection hologram of such a product |
-
1992
- 1992-09-30 JP JP26177592A patent/JPH06110382A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5760961A (en) * | 1995-03-16 | 1998-06-02 | Landis & Gyr Technology Innovation Ag | Optical information carrier having diffractive features and diffraction modulation layers |
| JPH10151643A (en) * | 1996-09-24 | 1998-06-09 | Toppan Printing Co Ltd | Card pitted with lippman hologram and its production |
| JP2010286579A (en) * | 2009-06-10 | 2010-12-24 | Toppan Printing Co Ltd | Display body, adhesive label, article with label, and authenticity determination device |
| EP3778255A3 (en) * | 2019-08-13 | 2021-04-21 | Bundesdruckerei GmbH | Valuable or security product, method for its production and device for reconstruction and acquisition of a reflection hologram of such a product |
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