CN205451663U - Security device - Google Patents

Abstract

The utility model discloses an anti-counterfeiting device, which comprises: a magnetically variable material containing part, which contains a magnetically variable material that changes reflected light or transmitted light when an applied magnetic field changes; The magnetic field of variable substance; and the spacer layer, arranged between the magnetically variable substance containing portion and the magnetic field generating portion and adjusting the interval between the magnetically variable substance containing portion and the magnetic field generating portion; thereby adjusting the thickness of the spacer layer applied to the magnetic field The strength of the magnetic field of the variable substance is changed, thereby changing the light reflected or transmitted from the magnetically variable substance containing part.

Description

Anti-counterfeiting device

technical field

The utility model relates to an anti-counterfeiting device.

Background technique

Various techniques have been proposed for anti-counterfeiting of expensive commodities or contents that need to be protected. Conventional technologies for product anti-counterfeiting include technologies using fine patterns, Braille, holograms, RFID, etc., but the above-mentioned conventional technologies have limitations that it is difficult for ordinary users to identify whether a product is counterfeit or not, or there is a large cost to manufacture anti-counterfeiting means The problem.

Therefore, the present inventors have developed a method and device for ordinary users to easily determine whether an anti-counterfeit object is anti-counterfeit by using a substance that changes color or light transmittance when a magnetic field is applied.

Utility model content

The purpose of this utility model is to solve all above-mentioned problems.

The purpose of this utility model is to provide a spacer layer between the magnetically variable material containing part and the magnetic field generating part, thereby changing the reflection from the magnetically variable material containing part and the magnetic field generating part by adjusting the distance between the magnetically variable material containing part and the magnetic field generating part. or transmitted light as an anti-counterfeiting device.

In addition, the purpose of the present utility model is to provide a magnetic induction pattern part is magnetically induced (magnetic induction) according to the magnetic field applied from the magnetic field generating part, so that it can reflect or transmit from the part of the magnetically variable substance containing part opposite to the magnetic induction pattern. Light-altering anti-counterfeiting device.

In addition, the object of the present invention is to provide a method for applying a magnetic field to a second magnetic induction part that is integrally extended to the first magnetic induction part opposite to the above-mentioned magnetically variable substance containing part, so that it can Anti-counterfeiting device with applied magnetic field.

In addition, the purpose of the present invention is to provide an anti-counterfeiting device that rotates or changes the position of the magnetic field generating part relative to the magnetically variable substance containing part, thereby changing the light reflected or transmitted from the magnetically variable substance containing part.

In addition, the purpose of the present invention is to provide a part of the adhesive part of the adhesive part that is bonded to the magnetically variable substance containing part. An anti-counterfeiting device in which only a part of the magnetic variable substance containing part is separated when changing the substance containing part.

In addition, the object of the present invention is to provide a method for forming a cut-out pattern on the magnetically variable substance-containing part, so that when an external force is applied to separate the magnetically variable substance-containing part from the bonding part, only the magnetically variable substance corresponding to the cut-off pattern is contained. The anti-counterfeiting device where the parts of the body are separated.

In addition, the purpose of the present utility model is to provide a magnetically variable material containing part equipped with an information film layer and form images, patterns, characters, graphics, barcodes, etc. on the surface in contact with the magnetically variable material containing part to represent information. Anti-counterfeiting device.

In addition, an object of the present invention is to provide an anti-counterfeiting device that includes an information display portion such as an image, pattern, character, figure, barcode, etc. in a magnetically variable substance containing portion to display information.

In addition, the object of the present invention is to provide a method for receiving light reflected or transmitted from a magnetically variable substance-containing part according to a magnetic field applied to a magnetized part magnetized in a pattern shape part, and matching it with an input pattern or wavelength value. An anti-counterfeiting device that can be compared to determine whether it is authentic or not.

The purpose of this utility model is achieved as follows: provide an anti-counterfeiting device, including: a magnetically variable material containing part, including a magnetically variable material that changes reflected light or transmitted light when the applied magnetic field changes; the magnetic field generating part , generating a magnetic field that can be applied to the magnetically variable substance; and a spacer layer, disposed between the magnetically variable substance containing portion and the magnetic field generating portion and adjusting the interval between the magnetically variable substance containing portion and the magnetic field generating portion; thereby adjusting the spacer layer The thickness of the adjusts the strength of the magnetic field applied to the magnetically variable substance, thereby changing the light reflected or transmitted from the magnetically variable substance containing portion.

The spacer layer includes at least one of an air layer, a film layer, a film layer, a sheet layer, an adhesive layer, an information display layer, and a phase change materials layer.

The intensity of the magnetic field applied to the magnetically variable substance is adjusted by adjusting the thickness of the spacer layer, thereby changing the light reflected or transmitted from the magnetically variable substance containing part.

The intensity of the magnetic field applied to the magnetically variable substance is adjusted by adjusting the magnetic susceptibility of the spacer layer, thereby changing the light reflected or transmitted from the magnetically variable substance containing part.

The above-mentioned spacer layer includes a light-absorbing layer, and the above-mentioned light-absorbing layer can change light reflected or transmitted from the magnetically variable substance containing part.

The spacer layer includes a transparent or translucent light-transmitting layer, and the light-transmitting layer can change light reflected or transmitted from the magnetically variable substance containing part.

Images, patterns, characters, graphics, barcodes, etc. may be formed on at least one side of the above-mentioned light-transmitting layer.

The magnetically variable substance containing part or the magnetic field generating part is bent and deformed by applying an external force to the magnetically variable substance containing part or the magnetic field generating part, thereby changing the magnetic field applied to the magnetically variable substance containing part.

The above-mentioned magnetically variable substance-containing portion can be formed by coating the above-mentioned magnetically variable substance on an elastic substrate.

The spacer layer is made of elastic material, and the spacer layer is deformed by an external force to change the magnetic field applied to the magnetic variable substance containing part.

In addition, the purpose of this utility model is achieved as follows: provide an anti-counterfeiting device, including: a magnetically variable material containing part, which contains a magnetically variable material that changes reflected light or transmitted light when the applied magnetic field changes; The generator generates a magnetic field that can be applied to the magnetic variable substance; and the magnetic induction part is provided on the other side of the magnetic variable substance containing part, and at least a part thereof is magnetically induced by the magnetic field applied from the magnetic field generator.

The magnetic induction part may form a magnetic induction pattern as a magnetically induced area.

Light reflected or transmitted at a portion of the magnetically variable substance containing portion opposite to the magnetic induction pattern may be changed.

In addition, the purpose of this utility model is achieved in the following way: provide an anti-counterfeiting device, including: a magnetically variable substance containing part, containing a magnetically variable substance that changes reflected light or transmitted light when the applied magnetic field changes; A magnetic induction part is opposed to at least a part of the magnetically variable substance containing part; a second magnetic induction part is integrally extended from the first magnetic induction part; and a magnetic field generation part generates a magnetic field that can be applied to the second magnetic induction part.

According to the magnetic field applied by the above-mentioned magnetic field generating part, while the second magnetic induction part is magnetically induced, the above-mentioned first magnetic induction part integrally extended with the above-mentioned second magnetic induction part is magnetically induced, and from the above-mentioned magnetically variable substance opposite to the above-mentioned first magnetic induction part The light reflected or transmitted by the containing portion may be altered.

In addition, the purpose of the utility model is achieved as follows: provide an anti-counterfeiting device, comprising: a magnetically variable material containing part, including a magnetically variable material that changes reflected light or transmitted light when the applied magnetic field changes; and The magnetic field generating part generates a magnetic field that can be applied to the magnetically variable substance; and the magnetic field generating part includes at least one permanent magnet or variable magnet.

The magnetic field generating part rotates or changes position relative to the magnetically variable substance containing part, thereby changing the light reflected or transmitted from the magnetically variable substance containing part.

A magnetized portion including at least one layer may further be included between the magnetically variable substance containing portion and the magnetic field generating portion.

In addition, the purpose of the utility model is achieved as follows: provide an anti-counterfeiting device, comprising: a magnetically variable material containing part, including a magnetically variable material that changes reflected light or transmitted light when the applied magnetic field changes; and An adhesive part is formed on one side of the above-mentioned magnetically variable substance-containing part, so that the above-mentioned magnetically variable substance-containing part is attached to any object; the rest of the .

When an external force is applied to separate the above-mentioned magnetically variable substance-containing portion from the above-mentioned bonding portion, the portion of the above-mentioned magnetically variable substance-containing portion that is bonded to the above-mentioned part maintains the bonded state, and only the portion that is bonded to the part other than the above-mentioned part Parts of the aforementioned magnetically variable substance containing portion are separated.

The above-mentioned part may be patterned.

In addition, the purpose of the utility model is achieved as follows: provide an anti-counterfeiting device, comprising: a magnetically variable material containing part, including a magnetically variable material that changes reflected light or transmitted light when the applied magnetic field changes; and The bonding part is formed on one side of the above-mentioned magnetically variable substance-containing part, so that the above-mentioned magnetically variable substance-containing part is attached to any object; When an arbitrary object separates the above-mentioned magnetically variable substance containing portion, only the portion corresponding to the cutout pattern of the magnetically variable substance containing portion is separated.

In addition, the purpose of this utility model is achieved by providing an anti-counterfeiting device, including: a magnetically variable material containing part, which contains a magnetically variable material that changes reflected light or transmitted light when the applied magnetic field changes; information The thin film layer is provided on the above-mentioned magnetically variable material containing part and forms images, patterns, characters, graphics, barcodes, etc. on the surface in contact with the magnetically variable material containing part; The magnetic field of matter.

In addition, the purpose of this utility model is achieved as follows: provide an anti-counterfeiting device, including a magnetically variable substance containing part that contains a magnetically variable substance that changes reflected light or transmitted light when the applied magnetic field changes, and the above-mentioned The magnetically variable substance containing part is provided with an information display part such as an image, a design, a character, a figure, a barcode, or the like.

The above-mentioned information display part can be formed by selectively removing the above-mentioned magnetically variable substance containing part by punching, laser irradiation, UV irradiation and other methods.

In addition, the purpose of this utility model is achieved by providing an anti-counterfeiting device, including: a magnetization part, which has a certain pattern and the above-mentioned pattern part is magnetized; a magnetically variable material containing part, including when the applied magnetic field changes, a magnetically variable substance that changes reflected light or transmitted light; and a light receiving portion that receives light reflected or transmitted from the magnetically variable substance containing portion according to a magnetic field applied from the magnetized portion.

The light receiving unit can judge authenticity by comparing the input cluster or wavelength value with the wavelength of light reflected or transmitted from the magnetically variable substance containing part according to the pattern of the magnetized part.

The above-mentioned magnetically variable substance can be configured to reflect light of a predetermined wavelength or transmit light with a predetermined transmittance when the above-mentioned magnetic field is applied.

At least one of the above-mentioned magnetically variable substance containing part and the above-mentioned magnetic field generating part may be formed in at least one form of a label, a card, a film and a sticker.

A solution in which magnetic particles whose mutual intervals or positions are changed according to changes in an applied magnetic field are dispersed may be contained in the magnetically variable substance.

The above-mentioned magnetic variable substance may include at least one of fluorescent substance, phosphorescent substance, quantum dot (Quantum Dot) substance, temperature indicating (Temperature Indicating) substance and optically variable pigment (OVP, Optically Variable Pigment) substance.

The above-mentioned magnetically variable substances can be packaged as capsules made of light-transmitting substances.

According to the present invention, the light reflected or transmitted from the magnetically variable substance containing part is changed by adjusting the interval between the magnetically variable substance containing part and the magnetic field generating part.

In addition, according to the present invention, according to the magnetic field applied from the magnetic field generating part, the magnetic induction pattern part is magnetically induced, so that the light reflected or transmitted from the part of the magnetically variable substance containing part opposite to the magnetic induction pattern can be changed.

In addition, according to the present invention, the magnetic field can be applied on an axis different from that of the magnetic variable substance containing part.

In addition, according to the present invention, the position of the magnetic field generating part is rotated or changed relative to the magnetically variable substance containing part, thereby changing the light reflected or transmitted from the magnetically variable substance containing part.

In addition, according to the present invention, when an external force is applied to separate the magnetically variable substance containing portion from the adhesive portion, a part of the magnetically variable substance containing portion can be separated.

In addition, according to the present invention, when an external force is applied to separate the magnetically variable substance containing portion from the bonding portion, only a portion of the magnetically variable substance containing portion corresponding to the cutout pattern is separated.

In addition, according to the present invention, information such as images, patterns, characters, graphics, and barcodes can be represented by the information thin film layer on the magnetically variable substance containing portion.

In addition, according to the present invention, information such as images, patterns, characters, graphics, and barcodes can be displayed on the magnetically variable substance containing portion.

In addition, according to the present invention, according to the magnetic field applied to the magnetized portion magnetized in the pattern shape portion, the light reflected or transmitted from the magnetically variable substance containing portion is received and compared with the input pattern or wavelength value, thereby To judge the authenticity or not.

Description of drawings

FIG. 1 is an exemplary diagram illustrating the principle of adjusting the wavelength of light reflected from a magnetically variable substance according to an embodiment of the present invention;

Fig. 2 is a schematic diagram showing the result of photographing the color change of the magnetically variable substance when magnetic fields of different intensities are applied according to an embodiment of the present invention;

3 is a schematic diagram showing a graph of measuring the wavelength of light reflected from a magnetically variable material according to different strengths of a magnetic field according to an embodiment of the present invention;

Fig. 4A is a schematic diagram of a SEM photograph of magnetic particles constituting a magnetically variable material according to an embodiment of the present invention; Fig. 4B shows that the magnetically variable material according to an embodiment of the present invention is made of a light-transmitting material After the capsule is encapsulated, a magnetic field is applied to make it reflect the light of the grass-green series of color photos;

Figure 5A to Figure 5C are according to an embodiment of the present invention, after forming a butterfly-shaped pattern on the upper part of the magnetically variable material, and setting magnets alternately arranged in strips to generate magnetic poles of different intensities in the lower part of the magnetically variable material , a schematic diagram of an observation photo of changing the color and pattern of a magnetically variable substance by rotating a magnet;

6A to 6B are exemplary diagrams showing the composition of changing the light transmittance of a magnetically variable substance according to an embodiment of the present invention;

Fig. 7 to Fig. 18 are diagrams illustrating the configuration of anti-counterfeiting devices according to various embodiments of the present invention.

Symbol Description

10: Magnetic variable substance 11: Particles

12: solvent 13: capsule

100: magnetically variable substance containing part 200, 700: magnetic field generating part

300: spacer layer 400: light absorbing layer

500: light transmission layer 600, 800: magnetic induction part

610: magnetic induction pattern 810: first magnetic induction part

820: second magnetic induction part 900: bonding part

1000: information thin film layer 1100: magnetized part

1200: Light receiving part F: External force

L: light

detailed description

The detailed description of the invention, which will be described later, will refer to the accompanying drawings which show by way of example specific embodiments in which the invention can be practiced. The above embodiments are described in detail so that those skilled in the art can fully implement the utility model. The various embodiments of the invention, although different, are not mutually exclusive. For example, specific shapes, structures, and characteristics described here can be realized in other embodiments as long as they do not deviate from the spirit and scope of the present invention. In addition, the positions or arrangements of individual constituent elements in each of the proposed embodiments may be changed as long as they do not depart from the spirit and scope of the present invention. Therefore, the detailed description to be described later is not restrictive, and the scope of the present invention includes all the equivalents to the claims. In the drawings, like reference numerals indicate the same or similar functions in various respects.

Below, the structure of the utility model will be described in detail in conjunction with the accompanying drawings, so that those skilled in the art to which the utility model belongs can easily implement the utility model.

[Constitution of magnetically variable substances]

According to an embodiment of the present invention, the particles included in the magnetically variable substance have magnetism to rotate or move when subjected to the magnetic force of a magnetic field, for example, the particles may contain nickel (Ni), iron (Fe), cobalt (Co) and other magnetic substances.

In addition, according to an embodiment of the present invention, the particles may include substances that are magnetic, that is, magnetized, when a magnetic field is applied. In particular, according to an embodiment of the present invention, in order to prevent the condensation of magnetic particles when no magnetic field is applied from the outside, it is possible to use magnetization that occurs when an external magnetic field is applied but does not occur when an external magnetic field is not applied. Remanent magnetization (remnantmagnetization) superparamagnetic (superparamagnetic) material.

In addition, according to an embodiment of the present invention, in order to make the particles easily dispersed in the solvent without agglomeration, the surface of the ions can be coated with charges of the same sign. The particles with different specific gravity are coated or mixed with other materials with different specific gravity on the particles in a solvent.

In addition, according to an embodiment of the present invention, the particles have a specific color to reflect light of a specific wavelength. In particular, the particles according to the invention can be provided with specific colors through oxidation state adjustment or coating with inorganic pigments, dyes and the like. For example, oxides, sulfides, sulfates, etc. of Zn, Pb, Ti, Cd, Fe, As, Co, Mg, Al, etc. containing chromophores can be used as inorganic pigments coated on particles according to the present invention, The dyes coated on the particles according to the present invention can be fluorescent dyes, acid dyes, basic dyes, mordant dyes, sulfur dyes, vat dyes, disperse dyes, reactive dyes and the like. In addition, according to an embodiment of the present invention, the particles included in the magnetically variable material may include fluorescent material, phosphorescent material, quantum dot (Quantum Dot) material, temperature indicating (Temperature Indicating) material and Optically Variable Pigment (OVP, Optically Variable Pigment) material Wait.

In addition, according to an embodiment of the present invention, in order to make the particles have high dispersibility and stability in the solvent, silicon dioxide, polymers, polymer monomers, etc. can be coated on the surface of the particles.

In addition, the diameter of the particles according to the present invention may be tens of nanometers to tens of micrometers, but it is not limited.

Next, the configuration of the solvent contained in the magnetically variable substance according to the present invention will be specifically described.

According to an embodiment of the present invention, in order to disperse the particles evenly, the solvent can be made of a material having a specific gravity similar to that of the particles, and can be made of a material suitable for the stable dispersion of the particles in the solvent, for example, can include a material with a low Permittivity halogen carbon oil, dimethyl silicone oil, etc.

In addition, according to an embodiment of the present invention, the solvent has a specific color to reflect light of a specific wavelength. Specifically, the solvent according to the present invention includes substances having inorganic pigments, dyes, or substances having structural colors through photonic crystallization.

In addition, according to an embodiment of the present invention, the magnetic particles are uniformly dispersed in a fat-soluble solvent, so as to prevent the particles from coagulating with each other or adhering to the inner wall of the capsule during the encapsulation process.

However, the compositions of the particles and the solvent according to the present invention are not limited to the above-mentioned ranges, and appropriate changes can be made within the scope of achieving the purpose of the present invention.

Next, the structure in which the particles and the solvent contained in the magnetically variable substance according to the present invention are encapsulated or separated will be specifically described.

According to an embodiment of the present invention, the particles can be dispersed in a solvent and encapsulated into a plurality of capsules made of light-transmitting substances. According to an embodiment of the present invention, by encapsulating particles and solvents, direct or indirect interference such as intermixing of different capsules can be prevented, so that the particles contained in the magnetically variable substances can be controlled independently, and more diverse patterns can be realized. Light transmission, to further enhance the light transmission control characteristics.

For example, gelatin, gum arabic, melamine, urea, protein, polysaccharide, etc. can be used as the material constituting the capsule according to an embodiment of the present invention, and a material for fixing the capsule (ie, adhesive) can be used. However, the composition of the capsule according to the present invention is not limited to the examples listed above, as long as it is light-transmitting, has strong physical properties, is not hard, has elasticity, is non-porous, and has strong resistance to external heat and pressure. , any substance can be used as the material of the capsule of the present utility model.

In addition, according to an embodiment of the present invention, the state of the particles dispersed in the solvent can be distinguished. According to an embodiment of the present invention, direct or indirect interference such as mixing between different units divided by the partition can be prevented, so that the particles contained in the magnetically variable substance containing part described later can be independently controlled for each capsule.

FIG. 1 is an exemplary diagram illustrating the principle of adjusting the wavelength of light reflected from a magnetically variable substance 10 according to an embodiment of the present invention.

According to an embodiment of the present invention, when a magnetic field is applied to a plurality of particles 11 that are magnetic and have charges on their surfaces, the particles 11 are biased to one side by magnetic attraction in a certain direction due to the magnetism of each particle 11, thereby Make the distance between the particles 11 smaller, at the same time, generate electric repulsion (when the particles have the same surface charge) according to Coulomb's law or physical magnetic force according to the three-dimensional hindrance effect (due to the detection functional group attached to the surface of the particle, the particle when the hydrodynamic size is large). Therefore, the distance between the particles 11 depends on the relative magnitude of the attractive force generated by the magnetic field and the repulsive force between the particles generated by the charge, and the particles 11 arranged at a certain distance can function as photonic crystals. That is, according to Bragg's law, the wavelength of light reflected from particles 11 depends on the distance between particles 11 , and thus, the wavelength of light reflected from particles 11 can be adjusted by controlling the distance between particles 11 .

Here, the pattern of the wavelength of the reflected light depends on factors such as the strength and direction of the magnetic field, the size and mass of the particles, the refractive index of the particles and the solvent, the magnetization value of the particles, the charge amount of the particles, and the concentration of the particles dispersed in the solvent. Show various situations.

As shown in FIG. 1 , when no magnetic field is applied, the particles in the capsule 13 may be irregularly arranged. In this case, no other colors are emitted from the particles 11 . Then, when a certain magnetic field is applied, the attractive force generated by the magnetic field and the repulsive force between the particles 11 generated by the electric charge reach a balance, so that the particles 11 are regularly arranged at a certain interval, thereby reflecting light of a specific wavelength from a plurality of particles 11 whose intervals are controlled . In addition, as the strength of the magnetic field applied to the particles 11 increases, the attractive force generated by the magnetic field also increases, the distance between the particles 11 becomes narrower, and the wavelength of light reflected from the particles 11 becomes shorter. That is, according to an embodiment of the present invention, by adjusting the strength of the magnetic field applied to the particles 11, the wavelength of light reflected from the particles 11 is adjusted. When the wavelength of the light reflected from the particles exceeds the range of visible light and enters the ultraviolet range as the intensity of the magnetic field increases, the particles transmit the visible light without reflecting it, thereby increasing the light transmittance.

In addition, according to an embodiment of the present invention, as shown in FIG. 1 , the magnetically variable substance composed of particles 11 and solvent 12 can be encapsulated by a capsule 13 composed of light-transmitting substance.

FIG. 2 is a schematic diagram showing the results of photographing the color change of the magnetically variable substance when magnetic fields of different intensities are applied according to an embodiment of the present invention.

As shown in Figure 2, as the strength of the applied magnetic field is adjusted, the light reflected from the particles can be tuned in all regions of the visible light wavelength range from red to grass green and violet.

3 is a schematic diagram showing a graph of measuring the wavelength of light reflected from a magnetically variable material according to different strengths of the magnetic field according to an embodiment of the present invention. The red light gradually shifts to the blue light with a shorter wavelength.

Fig. 4A is a schematic diagram of a SEM photograph of magnetic particles constituting a magnetically variable material according to an embodiment of the present invention; Fig. 4B shows that the magnetically variable material according to an embodiment of the present invention is made of a light-transmitting material After the capsule is encapsulated, a magnetic field is applied to make it reflect the light of the grass-green series.

Figure 5A to Figure 5C are according to an embodiment of the present invention, after forming a butterfly-shaped pattern on the upper part of the magnetically variable material, and setting magnets alternately arranged in strips to generate magnetic poles of different intensities in the lower part of the magnetically variable material , Schematic illustration of an observation photograph of changing the color and pattern of a magnetically variable substance by rotating a magnet.

In addition, according to an embodiment of the present invention, the magnetically variable substance may include magnetophoretic specific particles.

Specifically, if a magnetic field is applied to the magnetically variable substance according to an embodiment of the present invention, the magnetic particles can move in the same direction as the magnetic field or in the opposite direction, thereby indicating that the particles have an inherent color or the solvent has inherent color.

In addition, according to an embodiment of the present invention, the magnetically variable substance may include a substance that can change light transmittance when a magnetic field is applied.

FIGS. 6A to 6B are exemplary diagrams illustrating a configuration for changing the light transmittance of a magnetically variable substance according to an embodiment of the present invention.

As shown in Figure 6, according to an embodiment of the present utility model, the magnetically variable substance containing part can include a plurality of magnetic particles 11, a solvent 12 and a capsule 13, and in the capsule 13, a plurality of magnetic particles 11 It can be contained in the state dispersed in the solvent 12.

First, as shown in FIG. 6A , when no magnetic field is applied to the magnetically variable substance-containing part, a plurality of magnetic particles 11 can be irregularly pink in the capsule. At this time, the transmittance of light incident on the magnetically variable substance in a state of no particular control. That is, light incident to the magnetically variable substance is scattered or reflected by the irregularly dispersed plurality of particles 11, thereby relatively reducing light transmittance.

Next, as shown in FIG. 6B, if a magnetic field is applied to the above-mentioned magnetically variable substance, the plurality of magnetic particles 11 in the capsule 13 will be arranged in a direction parallel to the direction of the magnetic field, thereby controlling the incident to the magnetically variable substance containing The transmittance of light in the part.

Specifically, if a magnetic field is applied to the magnetically variable substance according to an embodiment of the present invention, the plurality of particles 11 that are originally magnetic or magnetized by the magnetic field rotate or move, so that the direction from the S pole to the N pole becomes same direction as the magnetic field. The N pole and S pole of each particle 11 that rotates or moves in this way becomes closer to the S pole and N pole of the surrounding particles 11, and magnetic attraction or repulsion is generated between the plurality of particles 11, so that the plurality of particles 11 along the The directions parallel to the direction of the magnetic field are regularly arranged. That is, the plurality of particles 11 can be regularly arranged along a direction parallel to the direction of the magnetic field applied in the up-and-down direction. At this time, the light incident on the magnetically variable material is scattered or reflected by the plurality of particles 11 to a lesser extent, thereby relatively reducing light transmission. Spend.

[Constitution of anti-counterfeiting device]

According to an embodiment of the present invention, a magnetically variable substance containing part 100 [please refer to FIG. 7 to FIG. 18 ] and a magnetic field generating part 200 [please refer to FIG. 7 to FIG. 10 ] may be included.

First, according to an embodiment of the present invention, the magnetically variable substance containing portion 100 may contain a magnetically variable substance that changes reflected light or transmitted light when the applied magnetic field changes. Specifically, the magnetically variable substance contained in the magnetically variable substance containing part 100 can be constituted (or arranged) to reflect light of a specific wavelength or exhibit a specific light transmittance when a magnetic field of a specific strength and direction is applied, such as As will be described later, such a magnetically variable substance allows ordinary users to visually confirm the authenticity of the anti-counterfeit object.

In addition, according to an embodiment of the present invention, the magnetically variable substance containing portion 100 can be configured to be destroyed when the anti-counterfeit object is opened. Therefore, after the anti-counterfeit object is opened, even if a magnetic field is applied to the magnetically variable substance , the reflected or transmitted light of the magnetically variable substance will not change, so that the magnetically variable substance cannot reflect light of a predetermined wavelength or exhibit a predetermined degree of light transmittance.

Next, according to an embodiment of the present invention, the magnetic field generator 200 functions to generate a magnetic field that can be applied to the magnetically variable substance. According to an embodiment of the present invention, the magnetic field generating part 200 can be formed according to a preset pattern, so that certain clusters of the magnetically variable substance can represent a preset color or a preset light transmittance. For example, the magnetic field generator can be configured to generate a magnetic field with a certain strength and direction according to the shape of LOGO, characters, barcodes, graphics, etc., which are used as references when judging whether the anti-counterfeit object is anti-counterfeit or not.

In addition, according to an embodiment of the present invention, it also has the function of changing the state of the magnetic variable substance (that is, the strength, direction or pattern of the magnetic field) applied to the magnetic variable substance as a response to external stimuli. The activation part (not shown) of the function of indicating the state. Here, the external stimulus applied to the activation unit may be initiated by a user who wants to confirm the authenticity of the anti-counterfeit object, a user who wants to open the anti-counterfeit object, a user who wants to use the anti-counterfeit object, or the like.

Specifically, according to an embodiment of the present utility model, the actuating part moves, rotates or bends in response to external stimuli, thereby moving the magnetically variable substance containing part 100 to the action generated by the magnetic field generating part 200. The role of the magnetic field area.

In addition, according to an embodiment of the present invention, the actuating part moves, rotates, bends, or is destroyed in response to external stimuli, thereby moving the magnetically variable substance contained in the magnetically variable substance containing part 100. The action to the area where the magnetic field generated by the magnetic field generating unit 200 is applied.

In addition, according to an embodiment of the present invention, the actuating part plays the role of moving, rotating or bending in response to external stimuli, thereby moving the magnetic field generating part 200 to a region where a magnetic field can be applied to the magnetically variable substance. .

Below, various embodiments of the anti-counterfeiting device of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 7 to Fig. 18 are diagrams illustrating the configuration of anti-counterfeiting devices according to various embodiments of the present invention. The anti-counterfeiting device according to the following embodiments is assumed to be made in the form of labels, cards, films and stickers, but is not limited to these forms.

First, as shown in FIG. 7 , the anti-counterfeiting device according to an embodiment of the present invention may include a magnetically variable substance containing part 100, a magnetic field generating part 200, and a magnetic variable substance containing part 100 and a magnetic field generating part 200. And the spacer layer 300 ( 310 , 320 , 330 ) for adjusting the distance d between the magnetically variable substance containing part 100 and the magnetic field generating part 200 .

The configuration of the spacer layer 300 is not limited as long as the distance d between the magnetically variable substance containing part 100 and the magnetic field generating part 200 can be adjusted. Therefore, the spacer layer 300 may include an air (air) layer, a film layer, a film layer, a sheet layer, an adhesive layer, a pattern, etc. to represent information, and to change phases according to factors such as heat, humidity, pH, electricity, and light. phase) [or volume] of phase change materials (phase change materials) layers, etc., and these can be stacked into multiple layers. (a) of Fig. 7 represents the embodiment with air layer 310 as spacer layer 300, (b) of Fig. 7 represents the embodiment with sheet layer 320 as spacer layer, and (c) of Fig. 7 represents with three layers 330 (331, 332, 333) as an example of a spacer layer.

The spacer layer 300 adjusts the strength of the magnetic field applied from the magnetic field generating part 200 to the magnetic variable material by adjusting the thickness d of one layer, or the thickness d of multiple layers when stacking multiple layers, thereby changing the magnetic field from the magnetic variable material containing part. 100 reflected or transmitted light L. Thereby, it has the effect that the color, visibility, etc. of the anti-counterfeiting device can be controlled.

For example, if the thickness d of the spacer layer 300 is made thinner, the magnetic field generator 200 applies a strong magnetic field to the magnetically variable substance, thereby reducing the distance between the particles 11 and reflecting a wavelength close to red; on the contrary, if the When the thickness d of the spacer layer 300 becomes thicker, the magnetic field generator 200 applies a weak magnetic field to the magnetically variable substance, thereby increasing the distance between the particles 11 and reflecting wavelengths close to blue.

In addition, by adjusting the magnetic permeability of the spacer layer 300 , the intensity of the magnetic field applied from the magnetic field generating part 200 to the magnetically variable substance can be adjusted, thereby changing the light L reflected or transmitted from the magnetically variable substance containing part 100 .

The thickness of the anti-counterfeiting device according to an embodiment of the present invention may be 1 μm to several cm. In addition, the ratio of the spacer layer 300 to the thickness may be 5% to 90%.

Next, as shown in FIG. 8 , in the anti-counterfeiting device according to an embodiment of the present invention, the spacer layer 300 may include a light absorbing layer 400 . Although the light-absorbing layer 400 is shown as a structure different from that of the spacer layer 300 in FIG. 8 , because the strength of the magnetic field applied to the magnetically variable substance can be adjusted by adjusting the thickness of the light-absorbing layer 400, it should be understood as light-absorbing layer 400. Layer 400 is also included in spacer layer 300 .

The light-absorbing layer 400 may be a film layer having a certain color such as black, red, blue, or the like. When a film layer having a certain color is used as the light-absorbing layer 400, the light transmitted through the magnetically variable substance-containing part 100 and reflected in the light-absorbing layer 400 and the light L' reflected from the magnetically variable substance-containing part 100 Overlap or interfere with each other, with effects that can change color, visibility, etc. In addition, since the light-absorbing layer 400 absorbs a specific wavelength range, it is possible to solve the problem that bright colors cannot be realized due to overlapping or interference of the light reflected from the light-absorbing layer 400 and the light L' reflected from the magnetically variable substance containing part 100. . For example, if a black film is used as the light-absorbing layer 400, since the light-absorbing layer 400 absorbs light in a wide wavelength range, the problem of overlapping and interference with light reflected from the magnetically variable material containing part 100 is greatly reduced, thereby greatly improving visibility. .

Next, as shown in FIG. 9 , in the anti-counterfeiting device according to an embodiment of the present invention, the spacer layer 300 may include a transparent or translucent light-transmitting layer 500 . Although the light-transmitting layer 500 is shown as a structure different from that of the spacer layer 300 in FIG. 9 , because the strength of the magnetic field applied to the magnetically variable substance can be adjusted by adjusting the thickness of the light-transmitting layer 500, it should be understood as the light-transmitting layer 500. Layer 500 is also included in spacer layer 300 .

Patterns 510 , images, characters, figures, barcodes, etc. can be formed on at least one side of the light-transmitting layer 500 . Since the light L' reflected from the part where the pattern 510 is formed is different from the light L in the wavelength range reflected from the part where the pattern 510 is not formed, there is a pattern 510 other than a certain color that can be recognized by the magnetically variable substance containing part 100. and other shape effects.

Next, as shown in FIG. 10, in the anti-counterfeiting device according to an embodiment of the present invention, by applying an external force F to the magnetically variable substance containing part 100, the magnetic field generating part 200 or the spacer layer 300 to deform, the change applied to the magnetic field is changed. The intensity of the magnetic field of the variable substance containing part 100 changes the light reflected or transmitted from the magnetically variable substance containing part 100 (L→L').

As shown in (a) of FIG. 10 , the magnetically variable substance can be coated on the elastic substrate to form the magnetically variable substance containing portion 100 a. In the state where the external force F is not applied, the magnetically variable substance containing part 100a reflects the light L of a predetermined wavelength, but when the external force F is applied, the magnetically variable substance containing part 100a bends 100a' and presses the spacer layer 300, thereby In the part where the thickness changes (d1→d2), the strength of the magnetic field applied to the magnetically variable substance containing part changes, thereby changing the wavelength of the reflected light L'. Since the magnetically variable substance containing part 100 a includes an elastic substrate, when the state of applying the external force F is released, it returns to its original state and reflects the light L of a predetermined wavelength.

In addition, the spacer layer 300 can be made of an elastic material, so that when the external force F is applied, the spacer layer 300 is deformed, and the strength of the magnetic field applied to the magnetically variable material containing part 100 is changed, thereby changing the magnetic field from the magnetic core variable material containing part 100. The reflected or transmitted light (L→L′), and when no external force F is applied, the spacer layer 300 returns to its original shape and reflects light L of a predetermined wavelength.

In addition, the magnetically variable substance containing part 100 or the magnetic field generating part 200 is bent and formed, and an external force F is applied to the bent part to change the strength of the magnetic field applied to the magnetically variable substance containing part 100, thereby changing the magnetic field containing part 100. Reflected or transmitted light (L → L').

Next, as shown in FIG. 11 , according to an anti-counterfeiting device according to an embodiment of the present invention, a magnetic field generating part 700 may be provided on one side of the magnetically variable substance containing part 100, and a magnetic field generating part 700 may be provided on the other side of the magnetically variable substance containing part 100. On the side, a magnetic induction unit 600 is provided that is at least partially magnetically induced by a magnetic field applied from the magnetic field generation unit 700 .

The magnetic induction part 600 can form a magnetic induction pattern 610 as a magnetically induced area, and the magnetic induction pattern 610 can be formed by coating a magnetized substance such as iron powder. When the magnetic field generating part 700 approaches the upper part of the magnetically variable substance containing part 100, not only a magnetic field is applied from the magnetic field generating part 700 to the magnetically variable substance containing part 100, but also a magnetic field is applied from the magnetic induction part 600, especially a magnetic induction is generated in the magnetic induction pattern 610. And amplify the strength of the magnetic force. Therefore, the wavelength of the light reflected from the portion 110 of the magnetically variable substance containing part 100 to which the amplified magnetic field is applied, that is, reflected from the part 110 of the magnetically variable substance containing part 100 opposite to the magnetic induction pattern 610 ((L→L' ). For example, when the magnetic induction pattern 610 is formed in the form of an image or text, the same graphic or text form as the magnetic induction pattern 610 can be confirmed through the upper surface of the magnetically variable substance containing part 100 .

As mentioned above, according to the anti-counterfeiting device of this embodiment, when the anti-counterfeiting object is integrally attached with the magnetically variable substance containing part 100 and the magnetic induction part 600, it also has the function of making the magnetic field generating part 700 close to the magnetically variable substance containing part 100. upper part, thereby confirming the effect of the pattern immediately.

Next, as shown in FIG. 12A to FIG. 12B , the anti-counterfeiting device according to an embodiment of the present utility model may include a magnetically variable substance containing part 100 and a first magnetic induction part opposite to at least a part of the above-mentioned magnetically variable substance containing part 100 810 , the second magnetic induction part 820 extending integrally from the first magnetic induction part 810 , and the magnetic field generating part 700 generating a magnetic field that can be applied to the second magnetic induction part 820 .

As shown in FIG. 12A , the first magnetic induction part 810 and the second magnetic induction part 820 are integrated, the magnetically variable material containing part 100 and the first magnetic induction part 810 have overlapping parts in the vertical direction, and the second magnetic induction part 820 is perpendicular to each other. Directions do not have overlapping parts. The first magnetic induction part 810 and the second magnetic induction part 820 are integrated and are not physically separated. Therefore, they should be made of the same material as a matter of course.

As shown in FIG. 12B , if the magnetic field generating part 700 does not apply a magnetic field to the magnetically variable substance containing part 100 and the first magnetic induction part 810, but only applies a magnetic field to the second magnetic induction part 820, then the magnetic field induced in the second magnetic induction part 820 At the same time, the first magnetic induction part 810 integrally extended with the second magnetic induction part 820 is also magnetically induced. The magnetically induced first magnetic sensing part 810 may apply a magnetic field to the magnetically variable substance containing part 100 , and thus, may change light reflected or transmitted from a portion of the magnetically variable substance containing part 100 opposite to the first magnetic sensing part 810 .

As mentioned above, according to the anti-counterfeiting device of this embodiment, even if the magnetic field generating part 700 is not brought close to the magnetically variable substance containing part 100, it can pass through the first magnetic induction part 810 on a different axis from the magnetically variable substance containing part 100. And the second magnetic induction part 820 indirectly applies a magnetic field to confirm whether it is true or false.

Next, as shown in FIGS. 13A to 13D , the anti-counterfeiting device according to an embodiment of the present invention may include a magnetically variable material containing part 100 and a magnetic field generating part 700 (710) composed of at least one permanent magnet or variable magnet. , 720).

As shown in FIGS. 13A and 13B , by using a rotating means (not shown) or a moving means (not shown) to rotate or change the position of the magnetic field generating part 700, the amount reflected or transmitted from the magnetically variable substance containing part 100 can be changed. Light (L → L').

As shown in FIG. 13C and FIG. 13D , the magnetic field generating unit 700 may include a plurality of 710 and 720 . As shown in FIG. 13C , if the magnetic field generators 710 and 720 are arranged to apply a magnetic field of the same magnetic field to both ends of the magnetic variable substance containing part 100, the two ends of the magnetized part 800 will be magnetized, so that the magnetic variable substance The light L reflected from the central portion of the containing portion 100 and the light L′ reflected from both ends have different wavelengths. As shown in FIG. 13D , if the magnetic field generators 710 and 720 are arranged to apply opposite magnetic fields to the two ends of the magnetically variable material containing part 100, the entire magnetized part 800 will be magnetized, so that the magnetically variable material containing part 100 will be magnetized. The wavelengths of the light L" reflected from the central part and both ends of the part 100 become the same.

In addition, the magnetic field generating unit 700 may combine a permanent magnet and a variable magnet, or may be configured in a plurality of layers. Therefore, light reflected or transmitted from the magnetically variable substance containing part 100 can be adjusted by adjusting the polarity, strength, amplification, interference, etc. of the magnetic field applied from the magnetic field generating part 700 . In addition, the polarity, strength, amplification, interference, and the like of the magnetic field applied from the magnetic field generating portion 700 are adjusted by configuring the magnetization portion 800 in a plurality of layers.

Next, as shown in Figure 14A, the anti-counterfeiting device according to an embodiment of the present utility model includes a magnetically variable substance containing part 100 and is formed on one side of the magnetically variable substance containing part, so that the magnetically variable substance containing part is attached For the adhesive portion 900 of an arbitrary object (not shown) [or product], the adhesive force of at least a part of the adhesive portion 900 is different from that of the remaining portion 920 .

A portion 910 may be patterned in the form of images, text, graphics, barcodes, and the like. When the adhesive force of a part 910 is greater than that of the remaining part 920, since the part 910 is strongly bonded to the magnetically variable substance containing part 100, the magnetically variable substance containing part 100 is separated from any object (not shown). , it is possible to detach only a part while leaving the rest undetached.

As shown in FIG. 14B , when an external force F is applied to separate the magnetically variable substance containing part 100, the part 120 of the magnetically variable substance containing part 100 adhered to the part 910 maintains the state of being bonded, and only the part 120 bonded to the part 910 remains bonded. The part 100b of the magnetically variable substance containing part 100 of the remaining part 920 other than 910 is separated.

Therefore, once the magnetically variable substance containing part 100 is separated from the object, a part 100b of the magnetically variable substance containing part 100 is damaged, thereby preventing the anti-counterfeit device from being used again. In addition, even when the magnetically variable substance containing part 100 is separated, the magnetically variable substance containing part 120 is still attached to the patterned part 910 of the bonding part 900 with strong adhesive force, so that it can continue to remain. Information that can prove that any object is genuine.

Next, as shown in Figure 15A, the anti-counterfeiting device according to an embodiment of the present utility model includes a magnetically variable substance containing part 100 and is formed on one side of the magnetically variable substance containing part, so that the magnetically variable substance containing part is attached The clipped pattern P is formed on the adhesive part 900 of an arbitrary object (not shown) [or product] on the magnetically variable substance containing part 100 .

The whole part of the bonding part 900 may be the same, and the cutout pattern P may be in the form of images, characters, graphics, and the like.

As shown in FIG. 15B , when an external force F is applied to separate the magnetically variable substance-containing part 100 , only the portion 130 corresponding to the cutout pattern P is separated, while the rest of the portion 140 remains bonded. On the contrary, the portion 130 corresponding to the cutout pattern P remains bonded, and the remaining portion 140 is separated. For example, when the cutout pattern P is in the text form of "authentic product", when the magnetic variable material containing part 100 is separated, the part 130 corresponding to the cutout pattern P is separated, while the remaining part 140 is maintained in the text form of "authentic product". The state of sticking to an arbitrary object (not shown).

Therefore, once the magnetically variable substance containing part 100 is separated from the object, the anti-counterfeit device is prevented from being used again because the magnetically variable substance containing part 100 is damaged. In addition, even when the magnetically variable substance containing part 100 is separated, since the part 140 is still attached to any object, information proving that any object is genuine can be kept.

Next, as shown in Figure 16, the anti-counterfeiting device according to an embodiment of the present utility model includes: a magnetically variable substance containing part 100, a magnetic field generating part 200, and a magnetically variable substance contained on the part and connected to the magnetically variable The surface in contact with the substance containing part 100 forms an information film layer 1000 such as an image 1010, a pattern, a character, a figure, a barcode, or the like.

The information film layer 1000 can be made of a material that can transmit light. Since the image 1010 and the like are formed on the surface of the information film layer 100 that is in contact with the magnetically variable substance containing portion 100 , the image 1010 and the like can be directly confirmed from the outside, and any falsification of the image 1010 from the outside can be prevented.

In addition, in order to more effectively prevent the phenomenon of forging the image 1010 by separating the information film layer 1000, the adhesive force of the bonding part (not shown) provided between the information film layer 1000 and the magnetically variable substance containing part 100 can be reduced. The same, or a cutout pattern (not shown) is formed in the magnetically variable substance containing portion 100 [please refer to FIGS. 14 to 15 ].

Next, as shown in FIG. 17 , the anti-counterfeiting device according to an embodiment of the present invention may further include a magnetically variable material containing portion 100 having images, patterns, characters, graphics, barcodes, and the like. The information display part 150 can be formed by selectively removing a part of the magnetically variable substance containing part 100 by methods such as punching, laser irradiation, and UV irradiation. Since the magnetically variable substance containing part 100 is provided with the information display part 150, it is prevented from reusing the magnetically variable substance containing part 100 on other types of commodities.

Next, as shown in FIG. 18 , the anti-counterfeiting device according to an embodiment of the present utility model includes a magnetized part 1100 with a certain pattern 1110 and a part of the pattern 1110 is magnetized. The applied magnetic field is applied to the light receiving unit 1200 that receives light reflected or transmitted from the magnetically variable substance containing unit 100 .

The pattern 1110 of the magnetized portion 1100 can be formed by coating a magnetized substance such as iron powder. A pattern or a value of a wavelength of light L, L′ reflected or transmitted from the magnetically variable substance containing part 100 may correspond to the shape of the cluster 1110 of the magnetized part 1100 .

The light receiving part 1200 may be composed of a photodiode to receive the light L, L' reflected or transmitted from the magnetically variable substance containing part 100 . The light receiving unit 1200 compares the light pattern or wavelength value input in advance with the light L, L′ received from the magnetically variable substance containing unit 100 to determine authenticity.

As described above, according to the anti-counterfeiting device of this embodiment, the authenticity can be confirmed more precisely by comparing the received light pattern or wavelength value with the light L, L' received from the magnetically variable substance containing part 100. or not. In particular, since the patterns and wavelength values of the light L, L' reflected or transmitted from the magnetically variable substance containing part 100 cannot be recognized by naked eyes, forming the pattern 1110 can further prevent counterfeiting.

In addition, the anti-counterfeiting device according to the present invention may further include an additional anti-counterfeiting means using at least one of hologram, RFID (Radio Frequency Identification) and human body information identification, thereby further improving the anti-counterfeiting effect on the object.

As mentioned above, in the present utility model, description has been made with specific elements, specific matters and limited embodiments, and this is only provided for helping to understand the present utility model, and the present utility model is not limited by the above-mentioned facts. Those of ordinary skill in the art should understand that the utility model can be modified, deformed or equivalently replaced.

The above-mentioned embodiments are only used to illustrate the utility model rather than limit it, and without departing from the spirit and scope of the utility model, changes that are equal or equivalent to the claims shall be included in the scope of the claims of the utility model.

Claims (10)

1. An anti-counterfeiting device, characterized in that, comprising: The magnetically variable substance containing part includes a magnetically variable substance that changes reflected light or transmitted light when the applied magnetic field changes; a magnetic field generating section that generates a magnetic field that can be applied to the magnetically variable substance; and The spacer layer is arranged between the magnetically variable substance containing part and the magnetic field generating part, and adjusts the distance between the magnetically variable substance containing part and the magnetic field generating part. 2. The anti-counterfeiting device according to claim 1, wherein the spacer layer comprises at least one of an air layer, a film layer, a film layer, a sheet layer, an adhesive layer, an information display layer, and a phase-change material layer. 3 . The anti-counterfeit device according to claim 1 , wherein the intensity of the magnetic field applied to the magnetically variable substance is adjusted by adjusting the thickness of the spacer layer, thereby changing the light reflected or transmitted from the magnetically variable substance containing part. 4. The anti-counterfeiting device according to claim 1, characterized in that: the intensity of the magnetic field applied to the magnetically variable substance is adjusted by adjusting the magnetic susceptibility of the spacer layer, thereby changing the light reflected or transmitted from the magnetically variable substance containing part . 5 . The anti-counterfeit device according to claim 1 , wherein the spacer layer includes a light absorbing layer, and the light absorbing layer changes the light reflected or transmitted from the magnetically variable substance containing portion. 6. The anti-counterfeiting device according to claim 1, wherein the spacer layer comprises a transparent or translucent light-transmitting layer, and the light-transmitting layer changes the light reflected or transmitted from the magnetically variable substance containing portion. 7. The anti-counterfeiting device according to claim 6, characterized in that images, patterns, characters, graphics, barcodes, etc. are formed on at least one side of the light-transmitting layer. 8. The anti-counterfeiting device according to claim 1, characterized in that: the above-mentioned magnetically variable material containing part or the above-mentioned magnetic field generating part is bent, and is deformed by applying an external force to the above-mentioned magnetically variable material containing part or the above-mentioned magnetic field generating part , thereby changing the magnetic field applied to the above-mentioned magnetically variable substance containing portion. 9 . The anti-counterfeiting device according to claim 1 , wherein the magnetically variable substance containing portion is formed by coating the magnetically variable substance on an elastic substrate. 10 . The anti-counterfeit device according to claim 1 , wherein the spacer layer is made of elastic material, and the spacer layer is deformed by an external force to change the magnetic field applied to the magnetic variable material containing part. 11 .