WO2020141875A1

WO2020141875A1 - Photo-functional pattern structure, authentication device comprising same, and method of manufacturing same

Info

Publication number: WO2020141875A1
Application number: PCT/KR2020/000010
Authority: WO
Inventors: 김현석
Original assignee: 김현석
Priority date: 2019-01-02
Filing date: 2020-01-02
Publication date: 2020-07-09
Also published as: KR102008776B1

Abstract

The present application relates to a photo-functional pattern structure, an authentication device comprising same, and a method of manufacturing same. According to one embodiment of the present invention, the photo-functional pattern structure comprises two or more structure bodies including a diffraction pattern capable of reflecting or transmitting an incoming incident light in a particular form, wherein the two or more structure bodies include a first structure body including a first diffraction pattern, and a second structure body including a second diffraction pattern. In particular, the incoming incident light transmitted through the first structure body, by the first diffraction pattern, is incident on a particular region of the second diffraction pattern, and the second diffraction pattern is provided with a plurality of regions having different diffraction patterns, such that the light, which reaches the different regions, may be reflected or transmitted to show different shapes depending on the locations thus reached.

Description

Optical functional pattern structure, authenticity determination device including the same, and method for manufacturing same

The present specification relates to a color light functional pattern structure, an authenticity discrimination device including the same, and a manufacturing method thereof.

Diffraction Optical Element (DOE) refers to a device capable of dispersing or concentrating light in an efficient manner through a nano pattern. Recently, DOE has been applied to various fields, for example, production facilities for laser material processing, medical laser treatment and diagnostic equipment, lighting, printing technology, and lithography, measurement and measurement systems.

By using DOE, it is possible to distribute light to a desired location while minimizing light loss, thereby minimizing power use and embodying various forms according to light sources. However, commercialization of DOE products is urgent as it is not yet possible that products using DOE have been commercialized.

In particular, as an example of a product using DOE, a device capable of determining authenticity can be manufactured. Recently, the frequency of counterfeiting of expensive items such as software, CDs, DVDs, securities, liquor, and drugs has increased. It can be said to be a necessary technology when the loss of reliability and the damage of consumers are reported.

As a representative of a product for determining authenticity, a hologram may be mentioned, but there is a limit to information that can be recorded as a hologram, and there is a problem that it is difficult to produce a sophisticated hologram. In addition, there is a problem that replication is very easy.

Another product is a product that can identify authenticity by recognizing an image with a smartphone by entering information into the image, such as a QR code. Such an image-based product may give an aesthetic characteristic, but there is a problem in that high-quality scanner technology is developed and the technology becomes more and more advanced, so that reproduction becomes very easy.

In addition, there are special equipment products for determining the authenticity using a magnetic field sticker, but these products literally require special equipment such as a magnet to determine the authenticity, thereby providing inconvenience to consumers.

In the case of using DOE, it is possible to manufacture products that consumers can easily determine whether they are authentic, thereby restoring corporate credibility and preventing consumer fraud by counterfeit products sellers, and minimizing consumer damage. Development is urgent.

The present specification provides a photo-functional pattern structure, an authenticity discrimination device including the same, and a method for manufacturing the same.

An exemplary embodiment of the present specification includes two or more structures including a diffraction pattern capable of reflecting or transmitting light incident from the outside in a specific shape,

The two or more structures are arranged with an intrinsic distance of the diffraction pattern in the plane direction of the structures,

The intrinsic distance of the diffraction pattern provides an optical functional pattern structure determined according to the diffraction pattern included in the structure through which the light first passes.

Another exemplary embodiment of the present specification provides an authenticity determination device including the optical functional pattern structure.

Another exemplary embodiment of the present specification includes the steps of forming two or more structures by independently forming diffraction patterns on two or more base films; And

According to the first diffraction pattern of the first structure in which light incident from the outside of the structure is first incident, the diffraction pattern so that the diffracted light transmitted through the first structure can reach a specific position of the second incident structure It provides a method for manufacturing a photo-functional pattern structure comprising the step of allowing the first and second structures to be arranged at a specific distance.

The photo-functional pattern structure according to an exemplary embodiment of the present specification is difficult to replicate the diffraction pattern included in a plurality of structures, and it is impossible to determine the intrinsic distance of the diffraction patterns between the plurality of structures, so that the same product cannot be produced except by the manufacturer.

Therefore, when the photo-functional pattern structure is used in the authenticity determination device, the consumer can easily determine whether the authenticity, thereby improving the reliability of the enterprise, minimizing consumer damage, and the like.

1 shows the principle of operation of the optical functional pattern structure according to one embodiment of the present specification.

2 is a view showing an exemplary embodiment of the second structure 220.

FIG. 3 is a diagram illustrating when the photo-functional pattern structure according to an exemplary embodiment of the present specification is arranged at a distance 410 rather than an intrinsic distance to a diffraction pattern.

4 shows three structures according to an exemplary embodiment of the present specification.

5 illustrates an example in which the types of light incident from the outside according to an exemplary embodiment of the present specification have at least one range independently selected from 647 nm to 723 nm, 492 nm to 575 nm, and 455 nm to 492 nm, respectively.

[Correction by Article 91 21.02.2020]
6 to 8 are views showing light 101 incident from the outside having different incidence angles.

[Correction by Article 91 21.02.2020]
9 shows a first structure having a protective layer according to an exemplary embodiment of the present specification.

Hereinafter, examples will be described in detail to specifically describe the present specification. However, the embodiments according to the present specification may be modified in various other forms, and the scope of the present application is not interpreted to be limited to the embodiments described below. The embodiments of the present application are provided to more fully describe the present specification to those skilled in the art.

In the present specification, when a member is said to be positioned “on” another member, this includes not only the case where one member is in contact with the other member but also another member between the two members.

In the present specification, when a part “includes” a certain component, this means that other components may be further included rather than excluding other components, unless otherwise specified.

In this specification, terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from other components. For example, the first component may be referred to as a second component without departing from the scope of the present invention, and similarly, the second component may be referred to as a first component.

An exemplary embodiment of the present specification includes two or more structures including a diffraction pattern capable of reflecting or transmitting light incident from the outside in a specific shape, wherein the two or more structures have a diffraction pattern intrinsic distance in the plane direction of the structure ( 400), and the diffraction pattern intrinsic distance 400 provides an optical functional pattern structure determined according to a diffraction pattern included in the structure through which the light first passes.

The number of the two or more structures including the diffraction pattern is not particularly limited. As the number increases, the difficulty of replication increases. For simplicity, it can be composed of two structures, but can be selected from 2 to 10 if necessary.

The intrinsic distance 400 of the diffraction pattern may be determined according to the position of the diffraction pattern included in the structure through which light first passes, and then the diffraction pattern of the structure through which light reaches. It will be described in detail through the drawings later.

According to the exemplary embodiment of the present specification, the two or more structures include a first structure 210 including a first diffraction pattern 320; And a second structure 220 including a second diffraction pattern 310, and light incident from the outside transmitted through the first structure 210 is diffracted by the first diffraction pattern 320. An optical functional pattern structure that passes through the pattern intrinsic distance 400 and enters a specific area on the second structure 220 is provided.

1 shows the principle of operation of the optical functional pattern structure according to one embodiment of the present specification. Referring to FIG. 1, light 101 incident from the outside may first pass through the first structure 210. The first structure 210 may disperse light through the first diffraction pattern 320. The scattered light passes through the diffraction pattern intrinsic distance 400 and reaches the second structure 220. In addition, the second structure 220 may include two or more second diffraction patterns 310, and the reached light may transmit a predetermined shape according to the second diffraction pattern 310 in a specific region.

2 is a view showing an exemplary embodiment of the second structure 220. Referring to FIG. 2, the second structure 220 may be provided as an area having n diffraction patterns. Each of the n regions may have a different diffraction pattern, and the light may pass through the first diffraction pattern 320 to be scattered by the first diffraction pattern 320 to reach the first region by the diffraction pattern corresponding to the region. 2 The light passing through the structure can form a specific image. This is not limited to the case where the structure is two, and can be applied to two or more structures.

FIG. 3 is a diagram illustrating when the photo-functional pattern structure according to one embodiment of the present specification is arranged at a distance other than the intrinsic distance 400 of the diffraction pattern. Referring to FIG. 3, when a structure is provided at a distance other than the intrinsic distance 400 of the diffraction pattern, light transmitted through the first structure 210 is another second diffraction pattern 310 of the second structure 220 The light transmitted through the second structure 220 forms a different image from that arranged when the diffraction pattern has an intrinsic distance 400.

The first structure 210 and the second structure 220 refer to a structure in which light first reaches and a structure in which the next light arrives, and necessarily indicates a structure in which the first light reaches and a structure in which the next light reaches It is not. When there are three structures, in the second and third structures, the second structure may be the first structure 210 and the third structure may be the second structure 220.

Figure 4 shows that the structure is three. Referring to FIG. 3, the second structure is the first structure 210 and the third structure is the second structure 220 in relation to the second structure and the third structure, and light passing through the first and second structures Can reach more specific areas of the 3rd structure, so more variable values must be matched to give the desired shape.

Further, according to an exemplary embodiment of the present specification, the structure through which the light 101 incident from the outside first transmits is a transmission unit that transmits the light, and the structure through which the light transmitted through the transmission unit reaches the light It provides a photo-functional pattern structure that is a receiving unit including a pattern that can reflect or transmit the same or different shapes depending on the location. That is, the first structure 210 may be a transmitter, and the second structure 220 may be a receiver. The receiver may include various patterns so that different shapes can be implemented according to a position where light arrives.

Further, according to an exemplary embodiment of the present specification, the type of light 101 incident from the outside is one or more, and each wavelength range is not particularly limited. That is, infrared, ultraviolet, radiation, and gamma rays can also control light through the structure. However, the consumer may have at least one wavelength from 380nm to 800nm in order to immediately grasp the shape easily formed by the eye. More specifically, the light 101 incident from the outside may have at least one range selected from 647 nm to 723 nm, 492 nm to 575 nm, and 455 nm to 492 nm.

FIG. 5 shows an example in which the types of light 101 incident from the outside according to an exemplary embodiment of the present specification have at least one range independently selected from 647 nm to 723 nm, 492 nm to 575 nm, and 455 nm to 492 nm, respectively. will be. Referring to FIG. 4, it can be seen that when the type of the light 101 incident from the outside is various, the finally formed image may be formed of a combination of light having various wavelength ranges.

[Correction by Article 91 21.02.2020]
Further, according to an exemplary embodiment of the present specification, the incident angle of the light 101 incident from the outside may not be constant. 6 to 8 are views showing light 101 incident from the outside having different incidence angles. Referring to FIG. 6, the light 101 incident from the outside may not be perpendicular to the first structure, and light in which a vertical angle of incidence and an angle of incidence that do not coexist may be incident. Referring to FIG. 7, the light 101 incident from the outside may be reflected by the first structure and reach the second structure. In this case, the diffraction pattern of the first structure may be reflective. Referring to FIG. 8, the first structure may include a diffraction pattern of reflection and transmission, and in this case, the light 101 incident from the outside may simultaneously transmit and reflect the first structure.

According to an exemplary embodiment of the present specification, the structure may further include a protective layer 230. The protective layer 230 may prevent physical reproduction of the diffraction pattern provided on the structure. The protective layer 230 is not particularly limited, but may be made of a material having a different refractive index from the structure. In particular, when the structure includes a diffraction pattern capable of transmitting light 101 incident from the outside, it may be made of a material having a refractive index that is at least 0.3 different than the structure. In this case, the structure can transmit the incident light in a larger amount, thereby making the image more vivid.

In addition, although not particularly limited, the protective layer 230 may be made of an adhesive resin. In this case, the structure can be easily attached to a specific object using the protective layer 230.

In addition, although not particularly limited, the protective layer 230 may include a light reflection layer. The type of the light reflection layer is not particularly limited as long as it can reflect light, but may include a hologram material, a material having a light reflectivity of 10% to 95%, and the like. By including the material, it is possible to observe the image formed by transmitting or reflecting the structure more clearly and aesthetically.

[Correction by Article 91 21.02.2020]
9 shows a first structure 210 having a protective layer 230 according to an exemplary embodiment of the present specification. Referring to FIG. 9, the protective layer 230 may be formed on the first diffraction pattern 320 of the first structure 210. The protective layer 230 formed as described above may serve to protect the first diffraction pattern 320 from the outside, and when a third party attempts to replicate the first diffraction pattern 320, the protective layer 230 ) In the process of separating from the first diffraction pattern 320, the first diffraction pattern 320 may be damaged, and thus replication may be impossible.

According to an exemplary embodiment of the present specification, it is possible to provide an authenticity determination device including the photo-functional pattern structure. As mentioned above, the optical functional pattern structure according to one embodiment of the present specification includes two or more structures, and as the number of structures increases, the security of the authenticity determining device may increase. Referring to FIG. 3, light passing through the first and second structures may reach more specific regions of the third structure, and thus more variable values must be adjusted in order to display a desired shape. Therefore, a higher level of security can be maintained.

The authenticity determination device according to an exemplary embodiment of the present disclosure further includes a determination unit capable of determining authenticity from a shape formed by light reflected or transmitted to a structure to which the light 101 incident from the outside finally reaches. Can. The image formed after the light 101 incident from the outside passes through all structures is determined according to the diffraction pattern and the diffraction pattern intrinsic distance 400 of the structures, which is the initial fabrication of the manufacturer who produced the photofunctional pattern structure. It depends on the settings. The image formed according to the manufacturer's initial production setting may be used to determine authenticity, and the discrimination unit for determining authenticity may be a specific object that can be directly checked by a person or a machine or program according to a specific control system. .

According to an exemplary embodiment of the present specification, forming two or more structures by independently forming a diffraction pattern on each of two or more base films; And the first diffraction pattern 320 of the first structure 210 in which the light 101 incident from the outside of the structure is first incident, so that the diffracted light transmitted through the first structure 210 is incident next. It is possible to provide a method for manufacturing a photo-functional pattern structure including the step of allowing the first and second structures to be arranged with a diffraction pattern intrinsic distance 400 to reach a specific position of the second structure 220.

According to an exemplary embodiment of the present specification, the step of independently forming a diffraction pattern on the base film is not particularly limited, and a hot embossing process, a nanoprinting process, or a molding process may be used.

According to an exemplary embodiment of the present specification, the diffraction pattern intrinsic distance 400 is as described above, the light passing through the first diffraction pattern 320 of the first structure 210 is the second structure 220 ) Can be designed by the manufacturer to reach on a particular second diffraction pattern 310.

Claims

It includes two or more structures including a diffraction pattern capable of reflecting or transmitting light incident from the outside in a specific shape,

The two or more structures may include a first structure including a first diffraction pattern; And a second structure including a second diffraction pattern,

The light incident from the outside that has passed through the first structure is incident on a specific region of the second diffraction pattern by the first diffraction pattern, and the second diffraction pattern is provided in a plurality of regions having different diffraction patterns to each other. The light-functional pattern structure that can reflect or transmit different shapes depending on the position of reaching the other regions.
The method according to claim 1,

The first structure and the second structure are arranged at a specific distance to the diffraction pattern in the plane direction of the structure,

The diffraction pattern natural distance is determined according to the diffraction pattern included in the first structure.
The method according to claim 1,

The first structure through which light incident from the outside first transmits is a transmitter for transmitting the light,

The second structure through which the light transmitted through the transmitting unit arrives is provided in a plurality of regions having different diffraction patterns, and the light reaching the different regions can be reflected or transmitted through the same or different shapes depending on the reaching position. A photo-functional pattern structure that is a receiver including a pattern.
The method according to claim 1,

The type of light incident from the outside is at least one, and each independently has an optical functional pattern structure having at least one wavelength from 380nm to 800nm.
The method according to claim 1,

The light incident from the outside has a photo-functional pattern structure having at least one range selected from 647nm to 723nm, 492nm to 575nm and 455nm to 492nm.
The method according to claim 1,

The structure is a photo-functional pattern structure further comprising a protective layer.
Apparatus for determining authenticity comprising any one of the optical functional pattern structures of claims 1 to 6.
The method according to claim 7,

An authenticity determination device further comprising a determination unit capable of determining authenticity from a shape formed by light reflected or transmitted to a structure where light incident from the outside finally reaches.
Forming a diffraction pattern on each of two or more base films independently, thereby providing two or more structures including a first structure including a first diffraction pattern and a second structure including a second diffraction pattern; And

Light incident from the outside that has passed through the first structure is incident on a specific region of the second diffraction pattern by the first diffraction pattern, and the second diffraction pattern is provided in a plurality of regions having different diffraction patterns to be different. A method of manufacturing a photo-functional pattern structure comprising arranging the first and second structures so that the light reaching the region can reflect or transmit different shapes depending on the position to reach.