KR102661097B1 - Identification Code Generation Device using diffractive optical element and authenticity verification device including the same - Google Patents

Abstract

An identification code generator using a diffractive optical element includes a first body including a first pattern, and a second body including a second pattern disposed at a position where light incident from the outside passes through the first pattern. And, the light incident from the outside includes generating different identification codes according to the arrangement angle of at least one of the first pattern and the second pattern.

Description

Identification code generation device using diffractive optical element and authenticity verification device including the same}

The present invention relates to an identification code generator using a diffractive optical element and an authentic product verification device including the same. More specifically, an identification code generator capable of generating an identification code that cannot be copied and a device for determining authenticity using the same. It is about an authenticity verification device that can.

Diffraction Optical Element (DOE) refers to an element that can disperse or focus light in an efficient manner through nanopatterns. Recently, DOE has been applied to a variety of fields, including production facilities for laser material processing, medical laser treatment and diagnostic equipment, lighting, printing technology, lithography, and measurement and measurement systems.

Using DOE, it is possible to disperse light and send it to a desired location while minimizing light loss, thereby minimizing power use and enabling light to take on various forms depending on the light source. However, it cannot be said that products using DOE have been commercialized yet, so commercialization of DOE products is urgently needed.

In particular, it is possible to manufacture a device that can determine the authenticity of products using DOE, as an example. This is because the frequency of counterfeiting expensive items such as software, CDs, DVDs, securities, liquor, and drugs is increasing recently, and as a result, companies It can be said to be an essential technology at a time when loss of trust and damage to consumers are being reported.

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

However, this barcode to determine the authenticity of a specific product can be created as a fake barcode and attached to a fake or counterfeit product and used for fraud as if it were the original, making it difficult to determine the authenticity of the barcode itself. It is difficult to replicate and requires the production of an identification code containing information.

Therefore, the purpose of the present invention is to provide an identification code generator that can generate an identification code that cannot be copied and an authenticity verification device that can use the same to determine authenticity.

An identification code generator using a diffractive optical element according to the present invention to achieve the above object includes: a first body including a first pattern; and a second body including a second pattern disposed at a position where light incident from the outside passes through the first pattern and is incident, and the light incident from the outside is transmitted through the first pattern and the second pattern. It includes generating different identification codes according to at least one of the arrangement angles. If light is incident with the arrangement angle of at least one of the first pattern and the second pattern different, an identification code that cannot be copied may be generated, so it is possible to use this to produce a product that allows consumers to easily determine authenticity. This can help restore corporate trust, prevent counterfeit product sellers from deceiving consumers, and minimize damage to consumers.

Here, the second pattern is provided with a plurality of areas having different diffraction patterns, so that the light reaching different areas generates different identification codes depending on the position where the light reaches the second pattern. This is desirable because it can generate a different identification code.

And the first body and the second body are arranged with a diffraction pattern intrinsic distance in the surface direction of the body, and when the diffraction pattern intrinsic distance is determined according to the pattern included in the first body, the diffraction pattern intrinsic distance is determined by the external light. Since the light output through the first pattern must be incident on the second pattern, it is preferable that it can be determined according to the first pattern.

Here, the light incident from the outside, passing through the first body, passes the pattern-specific distance by the first pattern and enters a specific area on the second body, and the external light is transmitted to the specific area of the second pattern. This is desirable because the desired identification code can be formed only after joining the company.

And the first body, through which the light incident from the outside first passes, is a transmitter that transmits the light, and the second body, through which the light passing through the transmitter arrives, is provided with a plurality of areas having different diffraction patterns and are different from each other. The light reaching the area is characterized in that it is a receiver that includes a pattern that can reflect or transmit the same or different shapes depending on the location where it arrives, and the first pattern is the transmitter and the second pattern serves as the receiver and can be copied. This is desirable because it can generate an unrecognizable identification code.

Meanwhile, the authenticity verification device according to the present invention for achieving the above object includes an identification code generator of any one of claims 1 to 5; and a determination unit capable of determining authenticity from the identification code formed by the light that is reflected or transmitted through the main body where the light incident from the outside finally reaches the main body. The identification code generated by the identification code generator can accurately determine product information and authenticity.

According to the present invention, when light is incident at a different arrangement angle of at least one of the first pattern and the second pattern, an identification code that cannot be copied can be generated, so that consumers can easily determine authenticity by using this. It is possible to manufacture products that are authentic, and through this, the company's trust can be restored, consumers can be prevented from being deceived by counterfeit product sellers, and damage to consumers can be minimized.

In addition, different identification codes can be generated depending on the position where the light reaches the second pattern, and the unique distance of the diffraction pattern is that external light must pass through the first pattern and the light output must be incident on the second pattern. 1 There are effects that can be determined depending on the pattern.

In addition, the desired identification code can be formed only when external light is incident on a specific area of the second pattern, and the first pattern serves as a transmitter and the second pattern serves as a receiver, thereby generating an identification code that cannot be duplicated. There is.

In addition, the identification code generated by the identification code generator has the effect of accurately determining product information or authenticity.

Figure 1 is an exemplary diagram of an identification code generator using a diffractive optical element according to the present invention.
Figure 2 is a diagram showing the operating principle of the identification code generator.
Figure 3 is a perspective view showing the operating state of the identification code generator.
Figure 4 is a perspective view showing another operating state of the identification code generating device.
Figure 5 is an explanatory diagram of the operating principle of the photo-functional pattern structure.
Figure 6 is a diagram showing an exemplary state of the second structure.
Figure 7 is an explanatory diagram when the photo-functional pattern structure is arranged at a distance other than the inherent distance of the diffraction pattern.
Figure 8 is an explanatory diagram for the case where there are three structures.
Figure 9 is an explanatory diagram of the type of light incident from a point light source.
10 is an exemplary diagram of a first structure with a protective layer.

Hereinafter, the identification code generator 1 according to a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

Figure 1 is an exemplary diagram of an identification code generator 1 using a diffractive optical element according to the present invention, Figure 2 is a diagram showing the operating principle of the identification code generator 1, and Figure 3 is an identification code generator It is a perspective view showing the operating state of (1), Figure 4 is a perspective view showing another operating state of the identification code generator (1), Figure 5 is an explanatory diagram of the operating principle of the photo-functional pattern structure 200, FIG. 6 is a diagram showing an embodiment of the second structure 310, and FIG. 7 is an explanatory diagram when the photo-functional pattern structure 200 is arranged at a distance 410 that is not the inherent distance of the diffraction pattern. 8 is an explanatory diagram for a case where there are three structures, FIG. 9 is an explanatory diagram of the type of light incident from the point light source 201, and FIG. 10 is an exemplary diagram of the first structure provided with the protective layer 230.

The configuration of the identification code generator 1 will be described with reference to FIGS. 1 to 10.

The identification code generator 1 generates different identification codes 3 by light incident from the outside according to the arrangement angle of at least one of the first pattern 11 and the second pattern 21.

The identification code generator 1 has a first body 10 and a second body 20 arranged with a diffraction pattern specific distance 400 in the plane direction of the body, and the diffraction pattern specific distance 400 is the first body 10 and the second body 20. It can be determined according to the pattern included in (10).

The identification code generator 1 allows light incident from the outside that has passed through the first body 10 to pass through the pattern-specific distance by the first pattern 11 and enter a specific area on the second body 20. there is.

The identification code generator 1 includes a first body 10, a second body 20, and a rotary connection part 30.

The first body 10 is a transmitting unit through which light incident from the outside first passes through and then transmits the light.

The first body 10 includes a first pattern 11.

The first pattern 11 guides light incident from the outside to a specific area of the second pattern 21.

The second body 20 is disposed at a position where light incident from the outside passes through the first pattern 11.

The second body 20 is provided with a plurality of areas where light passing through the transmitter can reach, and the light reaching different areas reflects or transmits the same or different shapes depending on the location where it reaches. It is a receiving unit that contains a pattern that can be displayed.

The second body 20 includes a second pattern 21.

The second pattern 21 is disposed at a position where light incident from the outside passes through the first pattern 11. The second pattern 21 is provided with a plurality of areas having different diffraction patterns, so that light reaching different areas can generate different identification codes 3 depending on the location where it arrives.

The rotation connection part 30 includes a first rotation connection part 31 and a second rotation connection part 32.

The first rotation connection portion 31 allows the first body 10 to rotate.

The second rotation connection portion 32 allows the second body 20 to rotate.

The authenticity verification device includes an identification code generator (1) and a determination unit that can determine authenticity from the identification code (3) formed by the light that is reflected or transmitted through the main body where the light incident from the outside finally reaches.

Figure 2 is a diagram showing the operating principle of the identification code generator 1.

The identification code generator 10 according to an embodiment of the present invention is attached to one side of the product 100, and the identification code 250 formed by the identification code generator 1 contains information about the product 100. It can provide information about authenticity.

The identification code generator 1 includes a photo-functional pattern structure 200.

The photo-functional pattern structure 200 includes two or more structures 210 and 310 including diffraction patterns 220 and 320 that can form an identification code 250 by reflecting or transmitting light incident from the outside.

Two or more structures 210 and 310 are arranged with a diffraction pattern intrinsic distance 400 in the plane direction of the structure, and the diffraction pattern intrinsic distance 400 is determined according to the diffraction pattern included in the structure through which light passes first.

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

For example, light incident from the outside may be provided from the light source 201 of the mobile device, and the information can be confirmed by photographing the identification code 250 displayed at this time with the camera of the mobile device.

In contrast, even if the light is provided from a planar light source, the planar light source may also be recognized as a point light source from a distance. Therefore, if the light incident from the outside is light provided from a planar light source, it is incident on the photo-functional pattern structure 200 at a certain distance away. If so, an identification code 250 can be formed.

Referring to FIG. 3, light incident on the photo-functional pattern structure 200 from the outside is reflected and is spaced a certain distance away from the photo-functional pattern structure 200 to form an identification code 250 on the top. The identification code 250 may appear in a three-dimensional shape like a hologram. For example, the reflective photo-functional pattern structure 200 can be appropriately used when the product to which the identification code display device is attached is an opaque product.

Referring to FIG. 4, light incident on the photo-functional pattern structure 200 from the outside is transmitted and is spaced a certain distance away from the photo-functional pattern structure 200 to form an identification code 250 on the top. For example, the transmissive optical functional pattern structure 200 can be appropriately used not only when the product to which the identification code generator 1 is attached is a transparent product but also when it is an opaque product.

The authenticity verification device 5 according to an embodiment of the present invention includes an identification code generator 1 and a determination unit, wherein the determination unit determines the structure formed by the light reflected or transmitted through the structure where the light incident from the outside finally reaches. Authenticity can be determined from the barcode. In addition, not only can the authenticity of a product be determined from the information provided by scanning the identification code, but it is also possible to easily provide consumers with information on how to use, utilize, and other information about the product they want. For example, the decision unit may be a camera of a mobile device.

Figure 5 shows the operating principle of a photo-functional pattern structure according to an embodiment of the present specification. Figure 6 is a diagram showing an exemplary state of the second structure. Figure 7 is a diagram showing when the photo-functional pattern structure according to an embodiment of the present specification is arranged at a distance other than the inherent distance of the diffraction pattern. Figure 8 shows three structures according to an exemplary embodiment of the present specification. Figure 9 shows an example where the type of light incident from a point light source according to an embodiment of the present specification has at least one range independently selected from 647 nm to 723 nm, 492 nm to 575 nm, and 455 nm to 492 nm. Figure 10 shows a first structure provided with a protective layer according to an exemplary embodiment of the present specification.

2 to 10, the photo-functional pattern structure 200 is disposed on one side of the product 100 and has a diffraction pattern that can reflect or transmit light incident from the point light source 201 to the barcode 250. It includes two or more structures (210, 220) including (310, 320). Two or more structures (210, 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 the diffraction pattern (310, 320) including the structure through which light passes first. It is decided according to

There is no particular limit to the number of two or more structures including the diffraction patterns 310 and 320. Simply, it can be composed of two structures, but depending on need, 3 to 10 structures can be selected.

The diffraction pattern specific distance 400 may be determined according to the position of the diffraction pattern included in the structure through which light first passes and the diffraction pattern of the structure through which light subsequently arrives. This will be explained in detail later through drawings.

Referring to FIG. 5, in the transmissive photo-functional pattern structure 200, the two or more structures include a first structure 210 including a first diffraction pattern 220 and a second structure including a second diffraction pattern 320. Light incident from a point light source including the structure 310 and passing through the first structure 210 passes through the diffraction pattern specific distance 400 by the first diffraction pattern 220 and is on the second structure 3100. Join a specific area.

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 220. The scattered light passes through the diffraction pattern characteristic distance 400 and reaches the second structure 310. In addition, the second structure 310 may include two or more second diffraction patterns 320, and the arriving light may transmit a shape determined according to the second diffraction pattern 320 in a specific area.

In contrast, in the reflective photo-functional pattern structure 200, the light incident on the first structure 210 is reflected by the first diffraction pattern 220, passes the diffraction pattern intrinsic distance 400, and passes through the first diffraction pattern 220. 2 It is incident on a specific area on the structure 310. In this case, even if light is incident on the second structure 310, it is only transmitted and must pass through both the first structure 210 and the second structure 310 to form the desired shape, for example, the identification code 250. .

Referring to FIG. 6, the second structure 3100 may be provided as an area having n diffraction patterns. Each of the n areas may have a different diffraction pattern, and the light passing through the first diffraction pattern 220 is dispersed by the first diffraction pattern 220 and is formed into a second structure by the diffraction pattern corresponding to the area. Light passing through 310) can form a specific image. This is not limited to the case where there are two structures, and can also be applied when there are two or more structures.

Referring to FIG. 7, when the structure is provided at a distance 410 that is not the inherent distance of the diffraction pattern, the light passing through the first structure 210 is transmitted to another second diffraction pattern 320 of the second structure 310. reaches , and the light passing through the second structure 310 forms an image that is different from when the diffraction pattern is arranged at a unique distance 400.

Here, the first structure 210 and the second structure 310 refer to the structure to which light arrives first and the structure to which light arrives next, and are necessarily the structure to which light arrives first and the structure to which light arrives next. It does not indicate . 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 310.

Referring to FIG. 8, 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 310, and the light passing through the first and second structures can reach more specific areas of the third structure, so more variable values must be adjusted to create 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 passes is a transmitting unit that transmits the light, and the structure through which the light passing through the transmitting unit reaches depends on the position at which the light arrives. An optically functional pattern structure 200 is provided, which is a receiving unit including a pattern that can reflect or transmit the same or different shapes. That is, the first structure 210 may be a transmitter and the second structure 310 may be a receiver. The receiver may include various patterns to implement different shapes depending on the location where the light arrives.

In addition, according to an exemplary embodiment of the present specification, there is more than one type of light incident from the point light source 201, and the wavelength range of each is not particularly limited. That is, infrared, ultraviolet, radiation, and gamma rays can also be controlled through the structure. However, in order for consumers to easily immediately see the shape formed, 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. 9, it can be seen that when the types of light incident from the point light source 201 are diverse, the image finally formed may be composed of a combination of lights having various wavelength ranges.

Referring to FIG. 10, the structure may further include a protective layer 230. The protective layer 230 can 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. In particular, when the structure includes a diffraction pattern that can transmit light incident from the point light source 201, it may be made of a material with a refractive index that is 0.3 or more different than that of the structure. In this case, the structure can create a clearer image by transmitting a greater amount of incident light.

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

Additionally, although there is no particular limitation, the protective layer 230 may include a light reflection layer. The type of light reflection layer is not particularly limited as long as it can reflect light, but may include holographic materials and materials with a light reflectivity of 10% to 95%. By including the material, the image formed by transmitting or reflecting the structure can be observed more clearly and from an aesthetic perspective.

For example, the protective layer 230 may be formed on the first diffraction pattern 220 of the first structure 210. The protective layer 230 formed in this way may serve to protect the first diffraction pattern 220 from the outside.

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

According to an exemplary embodiment of the present specification, the diffraction pattern specific distance 400 is, as mentioned above, when the light passing through the first diffraction pattern 220 of the first structure 210 is transmitted to the second structure 310. The manufacturer can design it to reach a specific second diffraction pattern 320.

Modifiable embodiments other than the above embodiments will be described.

The first pattern 11 is fixedly coupled to the first body 10, and the second pattern 21 is fixedly coupled to the second body 20 and the first rotary connection part 31 and the second rotary connection part. It can also be rotated by (32). When rotated in this way, the first pattern 11 and the second pattern 21 may be formed so that different types of identification codes are formed. Alternatively, the identification code may or may not be formed depending on the angle at which the first pattern 11 and the second pattern 21 are arranged. You can use this to verify the authenticity of the product.

When the plate surface of the first pattern 11 and the plate surface of the second pattern 21 face each other vertically, the authenticity of the product can be verified by forming a two-dimensional, that is, surface-shaped identification code, and the authenticity of the product can be verified by forming a two-dimensional, that is, surface-shaped identification code, and the first pattern ( If the plate surface of 11) and the plate surface of the second pattern 21 are not perpendicular to each other, a three-dimensional identification code can be formed to verify the authenticity of the product. This three-dimensional identification code may be a hologram or a polyhedron with multiple faces. A face-shaped identification code may be formed on each face of this polyhedron. Additionally, identification codes for lines, faces, and solids may be formed inside this polyhedron.

Due to the identification code generator 1 utilizing the above-mentioned diffractive optical element, an identification code that cannot be copied may be generated when light is incident on the arrangement angle of at least one of the first pattern and the second pattern. Therefore, this can be used to produce products that allow consumers to easily determine authenticity. Through this, trust in companies can be restored, consumers can be prevented from being deceived by counterfeit product sellers, and damage to consumers can be minimized.

In addition, different identification codes can be generated depending on the position where the light reaches the second pattern, and the unique distance of the diffraction pattern is that external light must pass through the first pattern and the light output must be incident on the second pattern. 1 It can be determined according to the pattern.

In addition, the desired identification code can be formed only when external light is incident on a specific area of the second pattern, and an identification code that cannot be copied can be generated while the first pattern serves as a transmitter and the second pattern serves as a receiver.

In addition, the product information and authenticity can be accurately determined using the identification code generated by the identification code generator.

1: Identification code generator 2: Product
3: Identification code 4: Light source
5: Authenticity verification device
10: first body 11: first pattern
20: second body 21: second pattern
30: Rotation connection 31: First rotation connection
32: Second rotation connection
100: product
200: Optical functional pattern structure 201: Point light source
210: first structure 220: first diffraction pattern
230: protective layer 250: identification code
310: second structure 320: second diffraction pattern
400: diffraction pattern intrinsic distance
410: Distance other than the diffraction pattern intrinsic distance

Claims (6)

In the identification code generator using a diffractive optical element,
a first body including a first pattern; and
It includes a second body including a second pattern disposed at a position where light incident from the outside passes through the first pattern and is incident,
Light incident from the outside generates different identification codes depending on the arrangement angle of at least one of the first pattern and the second pattern,
When the plate surface of the first pattern and the plate surface of the second pattern face each other perpendicularly, a two-dimensional identification code in the form of a face is formed, and the plate surface of the first pattern and the plate surface of the second pattern face each other so that they are not perpendicular to each other. In one case, a three-dimensional identification code is formed, and the three-dimensional identification code is either a hologram or a polyhedron with a plurality of faces, and an identification code in the form of a face is formed on each face of the polyhedron, An identification code generator using a diffractive optical element, characterized in that line, surface, and three-dimensional identification codes are formed inside a polyhedron.
According to claim 1,
The second pattern is provided as a plurality of areas with different diffraction patterns, so that the light reaching different areas generates different identification codes depending on the location where it arrives. An identification code generator using a diffractive optical element. .
According to claim 1,
The first body and the second body are arranged with a diffraction pattern intrinsic distance in the surface direction of the first body and the second body, and the diffraction pattern intrinsic distance is determined according to the pattern included in the first body. An identification code generator using a diffractive optical element.
According to clause 3,
Identification code generation using a diffractive optical element, wherein the light incident from the outside, which has passed through the first body, passes through a unique distance of the pattern due to the first pattern and enters a specific area on the second body. Device.
According to claim 1,
The first body through which the light incident from the outside first passes is a transmitting unit that transmits the light,
The second body, through which the light passing through the transmitter reaches, is provided with a plurality of areas having different diffraction patterns, so that the light reaching different areas can reflect or transmit the same or different shapes depending on the location where it reaches. An identification code generator using a diffractive optical element, characterized in that the receiving unit includes a pattern.
In the authenticity verification device,
An identification code generator according to any one of claims 1 to 5; and
An authenticity verification device comprising a determination unit capable of determining authenticity from an identification code formed by light that is reflected or transmitted through the main body where light incident from the outside finally reaches the main body.

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