KR20200144829A - Barcode display apparatus having optical functional pattern structure and apparatus for determining authenticity of an object - Google Patents

Abstract

The present invention relates to a barcode display device including an optical functional pattern structure and an authenticity determination device including the same which can display barcodes which are difficult to duplicate. The barcode display device comprises two or more structures including a diffraction pattern capable of forming the barcode.

Description

A barcode display device including a photofunctional pattern structure, and an authenticity determination device including the same.

The present specification relates to a barcode display device and an authenticity determination device including the same, and more particularly, to a barcode display device including a photofunctional pattern structure and an authenticity determination device including the same.

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, fields such as lithography, and measurement and measurement systems.

With DOE, it is possible to disperse and send light to a desired place while minimizing light loss, so power use can be minimized, and various forms can be implemented as light depending on the light source. However, the commercialization of DOE products is urgent because the products using DOE have not yet been commercialized.

In particular, as an example of products using DOE, it is possible to manufacture a device that can determine the authenticity. This is a recent increase in the frequency of counterfeiting of expensive goods such as software, CDs, DVDs, securities, liquor, and medicines. It can be said that it is a necessary skill at the time when the loss of reliability and damage to consumers are reported.

In addition, as one of the simple authentication methods, barcodes are introduced and widely used, and many technologies are known for security. Most of the known barcode related technologies are technologies developed mainly for the purpose of user authentication or secondary authentication by using tokens or unique characters as barcode values.

However, since this barcode for determining the authenticity of a specific product is created as a fake barcode and attached to a fake or counterfeit product, it can be used for fraud as if it were authentic, so it is difficult to determine the authenticity of such a barcode itself. It is difficult to duplicate and requires the production of barcodes containing information.

In the case of using DOE, it is possible to produce a product that allows consumers to easily determine whether or not it is authentic, and through this, it is possible to restore the company's credibility and prevent consumer deception by counterfeit product sellers. This technology can minimize damage to consumers. Development is urgent.

Patent Document 1: Korean Patent Application Publication No. 10-2018-0122843

The present specification provides a device capable of displaying a barcode that is difficult to duplicate, and a device capable of determining whether a product is authentic or not through the same.

A barcode display device according to an embodiment of the present invention for solving the above problem includes two or more structures including diffraction patterns capable of forming a barcode by reflecting or transmitting light incident from the outside, and the two or more structures A first structure including a first diffraction pattern; And a second structure including a second diffraction pattern, wherein the light incident from the outside that has passed through the first structure is incident to a specific region of the second diffraction pattern by the first diffraction pattern, and 2 The diffraction pattern may be provided as a plurality of areas having different diffraction patterns, and the light reaching different areas may reflect or transmit different shapes depending on the location to which they arrive.

Further, according to an embodiment of the present invention, the light incident from the outside may be provided from a point light source.

In addition, according to an embodiment of the present invention, the light incident from the outside is provided from a light source of a mobile device, and information may be checked by photographing the displayed barcode with a camera of the mobile device.

In addition, according to an embodiment of the present invention, the first structure and the second structure are arranged with a diffraction pattern intrinsic distance in the plane direction of the structure, and the diffraction pattern intrinsic distance is a diffraction pattern included in the first structure. Can be determined according to.

In addition, according to an embodiment of the present invention, the light incident from the outside passing through the first structure passes through the intrinsic distance of the diffraction pattern by the first diffraction pattern and enters a specific area on the second structure. I can.

In addition, according to an embodiment of the present invention, the first structure through which the light incident from the outside first transmits is a transmitter that transmits the light,

The second structure to which the light transmitted through the transmission unit arrives is provided with a plurality of regions having different diffraction patterns, and the light reaching different regions may reflect or transmit the same or different shape according to the arrival position. It may be a receiver including a pattern.

In addition, according to an embodiment of the present invention, the type of light incident from the outside may be one or more, and each independently may have at least one wavelength in 380 nm to 800 nm.

In addition, according to an embodiment of the present invention, the light incident from the outside may have at least one range selected from 647nm to 723nm, 492nm to 575nm, and 455nm to 492nm.

In addition, according to an embodiment of the present invention, the structure may further include a protective layer.

The authenticity determination device according to an embodiment of the present invention for solving the above problem determines the authenticity of the barcode display device and the barcode formed by the light reflected or transmitted to the structure where the light incident from the outside finally arrives. Includes a judgment unit capable of.

The barcode display device according to an exemplary embodiment of the present specification includes a photofunctional pattern structure in which a specific pattern is formed, and can form a barcode with light incident from the outside, and the barcode can provide information on products or determine authenticity. I can.

1 is a diagram showing an operating principle of a barcode display device according to an exemplary embodiment of the present specification.
2 is a perspective view showing an operating state of the barcode display device.
3 is a perspective view showing an operating state of the barcode display device.
4 illustrates the principle of operation of the photofunctional pattern structure according to an exemplary embodiment of the present specification.
5 is a view showing an exemplary embodiment of the second structure.
6 is a diagram illustrating a case in which the photofunctional pattern structure according to an exemplary embodiment of the present specification is arranged at a distance other than an inherent distance of a diffraction pattern.
7 shows that there are three structures according to an exemplary embodiment of the present specification.
8 shows an example in which the type of light incident from the point light source according to the exemplary embodiment of the present specification has at least one range independently selected from 647nm to 723nm, 492nm to 575nm, and 455nm to 492nm.
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 in order to describe the present specification in detail. However, the embodiments according to the present specification may be modified in various forms, and the scope of the present application is not construed as being limited to the embodiments described below. The embodiments of the present application are provided to more completely describe the present specification to those of ordinary skill 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 the member is in contact with the other member, but also the case where another member exists between the two members.

In the present specification, when a part "includes" a certain component, it means that other components may be further included rather than excluding other components unless otherwise stated.

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

1 is a diagram showing an operating principle of a barcode display device according to an exemplary embodiment of the present specification. 2 is a perspective view showing an operating state of the barcode display device. 3 is a perspective view showing an operating state of the barcode display device.

1 to 3, the present invention will be described in more detail.

The barcode display device according to an embodiment of the present invention is attached to one side of the product 100, and provides information on the information or authenticity of the product 100 to the barcode 250 formed by the barcode display device. can do.

The barcode display device includes a photofunctional pattern structure 200.

The photofunctional pattern structure 200 includes two or more structures 210 and 220 including diffraction patterns 310 and 320 capable of forming a barcode 250 by reflecting or transmitting light incident from the outside.

The two or more structures 210 and 220 are arranged with a diffraction pattern intrinsic distance 400 in the plane direction of the structure, and the diffraction pattern intrinsic distance 400 corresponds to a diffraction pattern included in the structure through which the light first transmits. Depends on

The light incident from the outside may be provided from the point light source 201.

For example, the light incident from the outside may be provided from the light source 201 of the mobile device, and the barcode 250 displayed at this time may be photographed with the camera of the mobile device to check information.

In contrast, even if the light is provided from the surface light source, the surface light source may also be recognized as a point light source at a long distance. Therefore, when the light incident from the outside is light provided from the surface light source, the photofunctional pattern structure 200 is separated by a predetermined distance. When incident on the bar code 250 may be formed.

Referring to FIG. 2, light incident on the photofunctional pattern structure 200 is reflected from the outside, and the barcode 250 may be formed on the photofunctional pattern structure 200 by being spaced apart from the photofunctional pattern structure 200 by a predetermined distance. The barcode 250 may appear in a three-dimensional shape such as a hologram. For example, the reflective photofunctional pattern structure 200 may be appropriately used when the product to which the barcode display device is attached is an opaque product.

Referring to FIG. 3, light incident on the photofunctional pattern structure 200 is transmitted from the outside to form the barcode 250 on the photofunctional pattern structure 200 by being spaced apart from the photofunctional pattern structure 200 by a predetermined distance. For example, the transmissive photofunctional pattern structure 200 may be appropriately used not only when the product to which the barcode display device is attached is a transparent product but also an opaque product.

The authenticity determination device according to an embodiment of the present invention includes the barcode display device and a determination unit, and the determination unit determines whether the authenticity is from a barcode formed by light reflected or transmitted through a structure to which light incident from the outside finally arrives. Can be judged. In addition, it is possible not only to determine whether the product is authentic or not from the information provided by scanning the barcode, but also to easily provide the user's desired product usage, usage, and other information. For example, the determination unit may be a camera of the mobile device.

4 illustrates the principle of operation of the photofunctional pattern structure according to an exemplary embodiment of the present specification. 5 is a view showing an exemplary embodiment of the second structure. 6 is a diagram illustrating a case in which the photofunctional pattern structure according to an exemplary embodiment of the present specification is arranged at a distance other than an inherent distance of a diffraction pattern. 7 shows that there are three structures according to an exemplary embodiment of the present specification. 8 shows an example in which the type of light incident from the point light source according to the exemplary embodiment of the present specification has at least one range independently selected from 647nm to 723nm, 492nm to 575nm, and 455nm to 492nm. 9 shows a first structure having a protective layer according to an exemplary embodiment of the present specification.

1 to 9, the photofunctional pattern structure 200 is disposed on one side of the product 100 to reflect or transmit light incident from the point light source 201 to the barcode 250. It includes two or more structures 210 and 220 including patterns 310 and 320. The two or more structures 210 and 220 are arranged with a diffraction pattern intrinsic distance 400 in the plane direction of the structure, and the diffraction pattern intrinsic distance 400 is a diffraction pattern included in the structure through which the light first transmits ( 310, 320).

The number of two or more structures including the diffraction patterns 310 and 320 is not particularly limited. It can be simply composed of two structures, but may be selected from 3 to 10 as necessary.

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

Referring to FIG. 4, in the transmission-type photofunctional pattern structure 200, the two or more structures include a first structure 210 including a first diffraction pattern 310 and a second diffraction pattern 320. Including the second structure 220, the light incident from the point light source that has passed through the first structure 210 passes through the diffraction pattern intrinsic distance 400 by the first diffraction pattern 310, 2 It enters into a specific area on the structure 220.

Light incident from the point light source 201 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.

In contrast, in the reflective photofunctional pattern structure 200, light incident on the first structure 210 is reflected by the first diffraction pattern 310 and passes through the diffraction pattern intrinsic distance 400, It enters into a specific area on the second structure 220. In this case, even if light is incident on the second structure 220, it is transmitted only, and the desired shape, for example, the barcode 250, can be formed only after passing through both the first structure 210 and the second structure 220. .

Referring to FIG. 5, the second structure 220 may be provided as a region having n diffraction patterns. Each of the n areas may have a different diffraction pattern, and the first diffraction pattern 310 is dispersed by the first diffraction pattern 310 to reach the first diffraction pattern 310. 2 Light passing through the structure 220 may form a specific image. This is not limited to the case where there are two structures, and may be applied even when there are two or more structures.

Referring to FIG. 6, when a structure is provided with a distance 410 that is not the intrinsic distance of the diffraction pattern, light transmitted through the first structure 210 is different from the second diffraction pattern 320 of the second structure 220. The light transmitted through the second structure 220 forms an image different from that when the diffraction pattern is arranged at an inherent distance 400.

Herein, the first structure 210 and the second structure 220 refer to a structure to which light first arrives and a structure to which light next arrives, and the structure to which light first arrives and the next light to arrive. It does not represent a structure. 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.

Referring to FIG. 7, in the relationship between the second structure and the third structure, the second structure is the first structure 210, the third structure is the second structure 220, and the light passing through the first and second structures Since can reach more specific areas of the 3rd structure, more variables have to be set in order to display the desired shape.

In addition, according to an exemplary embodiment of the present specification, the structure through which the light incident from the point light source 201 first transmits is a transmitting unit that transmits the light, and the structure through which the light transmitted through the transmitting unit reaches the light reaches A photo-functional pattern structure 200 is provided, which is a receiving unit including a pattern capable of reflecting or transmitting the same or different shape according to the location. That is, the first structure 210 may be a transmitter, and the second structure 220 may be a receiver. The receiving unit may include various patterns to implement different shapes depending on the location where the light reaches.

Further, according to the exemplary embodiment of the present specification, the type of light incident from the point light source 201 is at least one, and each wavelength range is not particularly limited. That is, infrared rays, ultraviolet rays, radiation, and gamma rays can also be controlled through the structure. However, in order for a consumer to immediately grasp a shape easily formed with the eyes, it may have at least one wavelength in the range of 380 nm to 800 nm. More specifically, the light incident from the point light source 201 may have at least one range selected from 647 nm to 723 nm, 492 nm to 575 nm, and 455 nm to 492 nm.

Referring to FIG. 8, when the types of light incident from the point light source 201 are various, it can be seen that the finally formed image may be formed of a combination of light having a various wavelength range.

Referring to FIG. 9, the structure may further include a protective layer 230. The protective layer 230 may prevent physical duplication 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 refractive index different from that of the structure. Particularly, when the structure includes a diffraction pattern capable of transmitting light incident from the point light source 201, it may be made of a material having a refractive index that is 0.3 or more different from the structure. In this case, the structure may implement an image more clearly by transmitting incident light in a larger amount.

In addition, although there is no particular limitation, the protective layer 230 may be formed of an adhesive resin. In this case, the structure may be easily attached to a specific object by using the protective layer 230.

In addition, although there is no particular limitation, the protective layer 230 may include a light reflection layer. The type of the light reflecting layer is not particularly limited as long as it can reflect light, but may include a holographic material, a material having a light reflectivity of 10% to 95%, and the like. Due to the inclusion of the material, an image formed by transmitting or reflecting the structure can be observed prominently from a more clear and aesthetic point of view.

For example, the protective layer 230 may be formed on the first diffraction pattern 310 of the first structure 210. The protective layer 230 formed in this way may serve to protect the first diffraction pattern 310 from the outside.

Although not shown, the protective layer may be formed on the second diffraction pattern 320 of the second structure 220. In this case, by adjusting the thickness of the protective layer, a diffraction pattern intrinsic distance 400 between the first diffraction pattern 310 and the second diffraction pattern 320 may be adjusted.

According to the exemplary embodiment of the present specification, the diffraction pattern intrinsic distance 400 is, as mentioned 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 a specific second diffraction pattern 310.

100: product 200: photofunctional pattern structure
201: point light source 210: first structure
220: first rotation pattern 230: protective layer
250: barcode 310: second structure
320: second diffraction pattern 400: diffraction pattern intrinsic distance
410: distance other than the intrinsic distance of the diffraction pattern

Claims (10)

It includes two or more structures including a diffraction pattern capable of forming a barcode by reflecting or transmitting light incident from the outside,
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 passing through the first structure is incident to 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. The barcode display device capable of reflecting or transmitting different shapes depending on the location of the light reaching another area. The method of claim 1,
The bar code display device, characterized in that the light incident from the outside is provided from a point light source. The method of claim 1,
The light incident from the outside is provided from a light source of the mobile device,
The barcode display device, characterized in that the information can be checked by photographing the displayed barcode with a camera of the mobile device. The method of claim 1,
The first structure and the second structure are arranged with a diffraction pattern intrinsic distance in the plane direction of the structure,
The intrinsic distance of the diffraction pattern is determined according to a diffraction pattern included in the first structure. The method of claim 4,
The bar code display device, wherein the light incident from the outside that has passed through the first structure passes through the unique distance of the diffraction pattern by the first diffraction pattern and enters a specific area on the second structure. The method of claim 1,
The first structure through which the light incident from the outside first transmits is a transmitter that transmits the light,
The second structure to which the light transmitted through the transmission unit arrives is provided with a plurality of regions having different diffraction patterns, and the light reaching different regions may reflect or transmit the same or different shape according to the arrival position. Barcode display device, characterized in that the receiving unit including a pattern. The method of claim 1,
One or more types of light incident from the outside are provided, and each independently has at least one wavelength in the range of 380 nm to 800 nm. The method of claim 1,
The light incident from the outside has at least one range selected from 647nm to 723nm, 492nm to 575nm, and 455nm to 492nm. The method of claim 1,
The structure further includes a protective layer. The barcode display device of any one of claims 1 to 9; And
And a determination unit capable of determining authenticity from a barcode formed by light reflected or transmitted through a structure to which light incident from the outside finally arrives.

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