CN108656783B - A kind of security article and its detection method and detection system - Google Patents

Abstract

The present invention provides a kind of security article and its detection method and detection system.The safety design of the display characteristics of luminescence is provided on the security article, which includes at least one first area and at least one second area, in which: first area can be shone by infrared light or ultraviolet excitation, but anti-counterfeiting information cannot be written by ultraviolet light；Anti-counterfeiting information can be written in second area by ultraviolet light, and only after anti-counterfeiting information is written by ultraviolet light, can be shone by infrared ray excited.Security article provided by the present invention has the different characteristics of luminescences using first area and second area, therefore has the characteristics that easy to detect and concealment is high.The present invention also provides the detection methods and detection system that are directed to above-mentioned security article.

Description

A safety product and its detection method and detection system

technical field

The invention relates to a security product and a detection method and detection system thereof, belonging to the technical field of security and anti-counterfeiting.

Background technique

Anti-counterfeiting technology based on luminescent materials has a long history. At present, luminescent materials conforming to the Stokes effect, such as ultraviolet excitation emitting visible light emitting materials, namely fluorescent materials; and anti-Stokes effect luminescent materials, such as infrared light excitation emitting visible light emitting materials, namely infrared up-conversion materials, And anti-counterfeiting technical means such as paired and combined printing of fluorescent materials and infrared up-conversion materials have been widely used in high-end currency anti-counterfeiting or general printing anti-counterfeiting products (stamps, various tickets, certificates, etc.).

Patent CN1720145A proposes a security pattern and a manufacturing method thereof. The security pattern shows the same color under a sunlight light source, but shows a color change when ultraviolet light is used. The luminescent material contained in the ink in the present invention is actually a fluorescent material excited by ultraviolet light, and the detection process is also relatively simple, which can be judged only by observing the color change of the pattern under visible light and ultraviolet light sources.

Patent CN102555568A uses infrared up-conversion ink and ultraviolet fluorescent ink paired and combined to realize anti-counterfeiting method, which improves the anti-counterfeiting machine-reading level of pure infrared up-conversion features or ultraviolet fluorescent features, thereby effectively realizing the purpose of using machine-readable composite anti-counterfeiting, and at the same time improving the printing quality. The pattern combination effect of the product improves the anti-counterfeiting effect.

With the popularity of fluorescent materials and infrared up-conversion materials, counterfeiters can easily obtain such materials through commercial channels. Therefore, anti-counterfeiting technologies based on fluorescent materials, infrared up-conversion materials or a combination of the two have been difficult to form against counterfeiters. Effective technical barriers. Therefore, it is very necessary to develop a secure coding security product with high concealment and convenient detection.

SUMMARY OF THE INVENTION

In view of the above-mentioned defects in the prior art, the present invention provides a security product, the security pattern of the security product includes at least two regions with two different light-emitting properties, and thus has the characteristics of high concealment and convenient detection.

The present invention also provides a detection method for the above-mentioned security product. The detection method is used to identify authenticity and has the characteristics of convenient operation.

The present invention also provides a detection system for implementing the above detection method, which can perform authenticity detection on the security products in a static state and a moving state.

In order to achieve the above object, the present invention first provides a security product, the security product is provided with a security pattern showing luminous properties, the security pattern includes at least one first area and at least one second area, wherein:

The first area can be excited by infrared light or ultraviolet light to emit light, but cannot be written with anti-counterfeiting information by ultraviolet light;

The second region can be written with anti-counterfeiting information by ultraviolet light, and can be further excited by infrared light to emit light only after the anti-counterfeiting information is written by ultraviolet light.

According to the security article provided by the present invention, the security pattern includes a first area and a second area with different light-emitting properties, wherein:

The first area cannot be written with anti-counterfeiting information by ultraviolet light, that is, the first area is a non-writable security information graphic area, which cannot store energy under ultraviolet light irradiation, but can generate emission under ultraviolet light or infrared light irradiation. Light;

The second area can be irradiated by ultraviolet light to write anti-counterfeiting information, that is, the second area is a security information graphic area with readable and writable functions. Under the irradiation of ultraviolet light, the energy of the ultraviolet light can be stored to realize information writing. , and further using infrared light excitation, the stored energy can be released, thereby generating emitted light and realizing the readout of information. However, if the anti-counterfeiting information is not written in advance by ultraviolet light, it cannot be excited by infrared light to emit light.

In this way, the first area and the second area in the security pattern have the above-mentioned different light-emitting characteristics, so they can be compared with each other. By irradiating the security pattern with infrared light and ultraviolet light, the coded information of the security pattern can be obtained accordingly, and then The authenticity of the security product is determined by the change of the encoded information, so the security product has the characteristics of high concealment and convenient detection.

Specifically, the above-mentioned encoded information can usually be represented by "0" and "1", and the light-emitting (light-emitting signal can be detected) is marked as "1", and the non-light-emitting (light-emitting signal is not detected) is marked as "0". For example, if the first area can be excited by infrared light to emit light, and the second area has not been written with anti-counterfeiting information by ultraviolet light in advance, then under the irradiation of infrared light, the encoded information of the first area is "1" and the encoded information of the second area is "0", and the encoding information of the security pattern is "10".

It can be understood that the above-mentioned ultraviolet light should have a certain luminous intensity, so that when the second area is irradiated, at least part of the energy of the ultraviolet light can be stored in the second area, and when the second area is subsequently excited by infrared light, the second area can be excited to emit light. Therefore, the ultraviolet light contained in ordinary sunlight obviously does not meet the above-mentioned requirements for ultraviolet light. Correspondingly, the infrared light contained in ordinary sunlight also cannot meet the requirements of the above-mentioned infrared light, which excludes the possibility that the safety product has the above-mentioned luminous characteristics in the ordinary sunlight environment. At the same time, the authenticity detection of the security product can only be realized with the help of certain equipment, thereby ensuring the concealment of the security product.

In the specific implementation process of the present invention, the number of the first area and the second area in the security pattern can be reasonably set according to actual needs. For example, the number of the first area and the second area are two and are alternately arranged. The corresponding encoding information is "1010", respectively.

The first region and the second region can be excited to emit light by light of a specific wavelength (infrared light, ultraviolet light), especially that the emitted light generated under the irradiation of light with a specific wavelength is visible light. The wavelengths of visible light generated by the first region and the second region may be the same or different.

Specifically, the wavelength of the infrared light is greater than or equal to 800 nm, such as 980 nm; the wavelength of the ultraviolet light is less than 390 nm, such as 365 nm, or 254 nm.

The present invention does not specifically limit the number and relative positional relationship between the first area and the second area in the security pattern, and can be reasonably designed in consideration of factors such as anti-counterfeiting requirements and aesthetics. Specifically, preferably, the first area and the second area can be associated with each other to form a whole, for example, they can be in contact with each other or even be tangential, and of course they can be not in contact with each other.

Specifically, the first region can only be excited by infrared light to emit visible light; or can only be excited by ultraviolet light to emit visible light; or can be excited to emit visible light by both infrared light and ultraviolet light to emit visible light.

Specifically, the materials used to form the above-mentioned first region include fluorescent materials, or include infrared up-conversion materials, and may also include both fluorescent materials and infrared up-conversion materials.

The fluorescent material is a material that emits visible light under ultraviolet light irradiation. It is generally believed that when irradiated with ultraviolet light, the fluorescent material enters an excited state after absorbing the light energy of the ultraviolet light, and de-excites and emits visible light in a very short time (for example, within 10 ^-9 -10 ^-7 seconds), and once the incident light stops , the luminescence phenomenon disappeared immediately.

In the present invention, the fluorescent material used is not particularly limited, and inorganic fluorescent materials, especially rare-earth fluorescent materials, can be selected. For example, aluminates (SrAl ₂ O ₄ , CaAl ₂ O ₄ , BaAl ₂ O ₄ ) are used as Lanthanides (Eu, Sm, Er, Nd) act as activators. Alternatively, an organic polymer fluorescent material or an organic small molecule fluorescent material can also be selected. The above-mentioned fluorescent materials can be prepared by referring to the relevant literature, and can also be obtained commercially.

Infrared up-conversion material is a luminescent material that can emit visible light under the excitation of infrared light, also known as inverse Stokes luminescent material. In the present invention, the infrared up-conversion material used is not particularly limited, and it can be a conventional infrared up-conversion material in the art, such as a fluorine-containing compound material system, such as Cs ₂ GeF ₆ : 2%Re ⁴⁺ , and for example Nd ³⁺ : Pb ₃ M ₃ F ₁₉ (wherein M is Al, Ti, V, Cr, Fe, Ga). The above-mentioned infrared up-conversion materials can be prepared by referring to the relevant literature, and can also be obtained commercially.

The above-mentioned fluorescent material and infrared up-conversion material can be formed on the safety product by conventional methods in the art to obtain the first area, for example, the fluorescent material and the solvent and other components are reasonably configured, and then applied by spraying, spin coating, curtain coating, etc. It is covered on the surface of the safety product, and the first area is formed after the solvent is evaporated or dried and cured.

In the specific implementation process of the present invention, the first region is obtained by printing with the first ink, wherein the first ink is selected from at least one of ultraviolet fluorescent ink and infrared up-conversion ink. That is to say, the first area is obtained by printing on the substrate with ultraviolet fluorescent ink, infrared up-conversion ink, or even a mixed ink of ultraviolet fluorescent ink and infrared up-conversion ink; it is also possible to divide the first area into two or more sub-regions, wherein the sub-regions are respectively printed with at least two of the above three inks.

For example, the first region is all printed with UV fluorescent ink or infrared up-conversion ink; another example is a sub-region of the first region is printed with UV fluorescent ink, and the other sub-region is printed with infrared up-conversion ink; another example The entire first region is printed with the mixed ink of ultraviolet fluorescent ink and infrared up-conversion ink; for example, one subregion of the first region is printed with the above mixed ink, and the other subregion is printed with ultraviolet fluorescent ink.

According to factors such as the material, color and printing process of the substrate, the above-mentioned ultraviolet fluorescent inks can be screen printing fluorescent inks, gravure fluorescent inks, offset printing fluorescent inks, letterpress fluorescent inks and flexo printing fluorescent inks. Fluorescent anti-counterfeiting inks, such as invisible fluorescent inks, are colorless and transparent after printing, and red, green, yellow, brown, blue and other colors under ultraviolet light; Pigments are commonly used pigments in fluorescent inks, such as permanent red, permanent violet, phthalocyanine blue, and phthalocyanine green.

Similarly, the above-mentioned infrared up-conversion ink can be specifically selected from the infrared anti-counterfeiting ink commonly used in the market at present, and its specific formula and preparation method are well-known technologies, and the present invention does not specifically limit or describe it too much.

The above-mentioned mixed ink composed of ultraviolet fluorescent ink and infrared up-conversion ink is actually a kind of ultraviolet and infrared multiple anti-counterfeiting ink. Whether it is irradiated by ultraviolet light or infrared light, the first area can be excited to emit light, so it has double anti-counterfeiting effect.

Specifically, the substrate can be made of paper, or can be made of plastic materials such as PVC, PP, and PET, or even made of glass, or a mixture of the above two materials.

After being irradiated with ultraviolet light in advance, the second region is further irradiated with infrared light, and can generate emission light; however, if it is not irradiated with ultraviolet light in advance and is directly irradiated with infrared light, it cannot be excited to emit light.

Specifically, the second region emits visible light while being irradiated with ultraviolet light, and after the ultraviolet light irradiation is stopped, the afterglow intensity of the visible light is weakened to less than 0.32 mcd/m ² within 2 seconds. That is, after the ultraviolet light irradiation is stopped, the visible light weakens to be invisible to the naked eye within 2 seconds, and generally weakens to less than 0.32mcd/m ² within 0.2 seconds, such as 10-30ms, so that the human eye can hardly feel the afterglow. The presence.

Therefore, the light-emitting afterglow time of the second region is very short, so that after 2 seconds or even 0.2 seconds after the ultraviolet light irradiation is removed, further such as 10-30 ms, the afterglow of the emitted light disappears, and the infrared light can be further used for irradiation, thereby making the safety product It also has the advantage of fast detection.

Further, after the anti-counterfeiting information (irradiation) is written in the second area by ultraviolet light, when it is further irradiated by infrared light, the emitted light is visible light, and the infrared light is continuously used for irradiation, and the visible light is weakened to less than 0.32 in 60 seconds. mcd/m ² .

Specifically, the light-emitting characteristic of the second region is provided by a light-excited light-emitting material, that is, the material used for forming the second region includes a light-excited light-emitting material.

Photostimulated Luminescence (PSL) has an appropriate trap energy level. Under the excitation irradiation of ultraviolet light, the carriers in the host material can be trapped in the trap energy level and stored in a relatively stable state. Then it is excited by other wavelengths of light (such as infrared light), which can release visible light at short wavelengths, which is essentially the carriers (such as electrons or holes) and lattice lattices trapped in the traps in the host material. The process of carrier recombination at the luminescent center.

In addition to the host material, photoexcited luminescent materials must possess two basic elements: luminescent centers and traps. Generally speaking, a trace amount of rare earth ions (transition metal ions) doped into the host material becomes the luminescent center. The trap situation is relatively complicated. For example, the intrinsic defects of the host material can become defect centers, or another rare earth ion (transition metal ion) can be added to introduce defect centers into the host material; another common defect can also be added. The activator ions trap the host material.

In the present invention, the host material of the light-excited luminescent material includes but is not limited to silicate, phosphate, aluminate, tungstate, germanate, gallate, molybdate, garnet, stannate and zirconium At least one of acid salts, such as, but not limited to, strontium stannate, calcium stannate, magnesium stannate, strontium aluminate, strontium silicate, calcium zirconate, calcium germanate, or other materials; the luminescent center is a rare earth ion and at least one of transition metal ions, including but not limited to at least one of Eu ²⁺ , Tb ³⁺ , Sm ³⁺ , Sb ³⁺ and Mn ²⁺ .

The above-mentioned light-excited luminescent materials can store energy when irradiated by ultraviolet light, that is, write anti-counterfeiting information; and when further excited by infrared light, can release energy in the form of visible light, so that the second area has Unique luminous properties.

Further, defect centers can also be introduced into the host material. Specifically, the co-doped ions are rare earth ions, including but not limited to La ³⁺ , Dy ³⁺ , Tm ³⁺ , Sm ³⁺ , Yb ³⁺ and At least one of Gd ³⁺ and the like.

Specifically, the light-excited luminescent material used can be "Wang Zhilong, Zheng Guisen, Wang Shiqin, et al. Study on the Luminescence Properties of a Novel Electron-Trapping Optical Storage Material Sr ₂ SnO ₄ :Sb ³⁺ . Acta Physica Sinica, 2012, 61(12): 511 -516. "Sr ₂ SnO ₄ : 0.5% Sb ³⁺ ," or "Qin Qingsong, Ma Xinlong, Shao Yu, etc. Synthesis of New Optical Storage Materials Sr ₂ SnO ₄ : Tb ^{3 +} , Li ⁺ Sr ₂ SnO ₄ : 0.5%Tb ³⁺ , 0.5%Li ⁺ as described in Acta Physica Sinica, 2012, 61(9): 464-467.” "Xia Liu, Jiahua Zhang, Xia Zhang etal. Strongly enhancing photostimulated luminescence by doping Tm ³⁺ in Sr ₃ SiO ₅ : Eu ^{2 + .} Optics Letters, 2013, 38(2): 148-150." Sr _2.99-x SiO ₅ : 0.01Eu ²⁺ , xTm ³⁺ (x=0.0001-0.04); can also be "Ming Li, Xue Yu, Xuhui Xu et al. Color Variation BetweenPSL and PL in CaAl ₂ Si ₂ O ₈ : Tb ³⁺ with the Assistance of Trap Level. Journal of the American Ceramic Society, 2015, 98(7): 2008-2010. "Ca _0.965 Al ₂ Si ₂ O ₈ : 0.5% Tb ³⁺ ,3 %Dy3 ⁺ .

The light-excited luminescent materials reported in the above-mentioned documents are generally used as information optical storage materials, and their synthesis conditions are strictly limited, and the light-excited luminescent materials cannot be obtained commercially, thus forming an effective technical barrier to counterfeiters. .

In the light-excited luminescent material provided by the present invention, the host materials are all compounds with good physicochemical and thermal stability, so that the safety product also has the characteristics of good physicochemical resistance. In addition, because the traditional alkaline earth metal sulfide is not used as the matrix material, the problem that the traditional sulfide matrix material is easily decomposed to produce sulfur-containing harmful substances is also avoided, so it is environmentally friendly.

The present invention does not specifically limit the process method of how to process the above-mentioned light-excited luminescent material to obtain the second region, and any method acceptable in the art can be used. In the specific implementation process of the present invention, the second area is obtained by printing the second ink, and the second ink includes the following components in parts by weight:

40-60 parts of connecting material, 15-30 parts of filler, 1-5 parts of wax, 0-3 parts of mineral oil, 1-3 parts of surfactant, 1-3 parts of desiccant, and 15- 20 servings.

Through the reasonable configuration of the above components, not only can the anti-counterfeiting ink have good printing adaptability, including good fluidity, adhesion, tackiness and drying properties, so as to obtain an ideal printing pattern, but also the printing The second region formed by the pattern has the above-mentioned light emitting characteristics.

Specifically, the light-excited luminescent material can be dispersed in each anti-counterfeiting ink system in the form of a pigment. The inventor found that if the content of the light-excited luminescent material is too high, it will not only increase the raw material cost and processing cost of the anti-counterfeiting ink, but also emit light. The characteristics are not significantly improved, and at the same time, the printing suitability of the anti-counterfeiting ink will be affected, for example, it will cause problems such as the inability of the ink to transfer; on the contrary, if the content of the light-excited luminescent material is too low, it will cause subsequent detection difficulties. Generally, based on the weight of the anti-counterfeiting ink, the mass content of the light-excited luminescent material is 10-30%, further 15-30%, such as 15-20%.

Other components in the above-mentioned second ink, such as binder, filler, wax, mineral oil, surfactant and desiccant, can be selected from materials commonly used in the ink configuration process, such as polyurethane resin, phenolic resin or polyurethane modification. The alkyd resin, etc., are used as the connecting material, and the configuration can be reasonably selected according to the actual type of ink.

In general, the types of the above-mentioned second ink can include offset printing ink, gravure printing ink, letterpress printing ink, silk printing ink, flexo printing ink, etc., and then the second ink can be printed on the substrate by a matching printing method. surface to cover the substrate in whole or in part, thereby forming the second area. The substrate may be paper, or plastic materials such as PVC, PP, and PET, or even glass, or a mixture of the above two materials.

The security pattern is obtained by printing the above-mentioned first ink and second ink as paired inks on different areas on the same substrate. The security pattern is irradiated with infrared light and ultraviolet light in turn to obtain corresponding coded information to verify the authenticity of the security product. Therefore, the security product has the advantages of convenient detection and high concealment.

The specific form of the security product provided by the present invention can be bills (such as banknotes, checks, tax invoices, vouchers, deposit certificates, bank drafts, commercial drafts, etc.), cards (identity cards, employee cards, real estate certificates, passports, awards Certificates, marriage certificates, English grade certificates, computer grade certificates, etc.), documents (contract documents, and accompanying documents, customs documents and other supporting documents, etc.), as well as lottery tickets, admission tickets and other security products that need to carry anti-counterfeiting information.

Specifically, according to different types of security products and anti-counterfeiting requirements, the security patterns can be arranged on the security products in corresponding forms, such as film, labeling, stickers, labels, trademarks, security threads or packaging materials. on safety products.

The present invention also provides a method for detecting the above-mentioned safety product, comprising the following steps:

Using infrared light to illuminate the security pattern on the security product to be detected, and obtain the generated first encoded information;

After stopping infrared light irradiation, use ultraviolet light to illuminate the security pattern;

After the ultraviolet light irradiation is stopped, the security pattern is irradiated with infrared light, and the generated second encoded information is obtained;

Compare whether the first encoded information and the second encoded information are the same.

Specifically, the wavelength of the infrared light is greater than or equal to 800 nm, such as 980 nm; the wavelength of the ultraviolet light is less than 390 nm, such as 365 nm, or 254 nm.

It can be understood that the wavelength of the infrared light used twice should be kept the same, so as to facilitate the comparison of the encoded information generated by the two times of infrared light irradiation, so as to identify the authenticity.

According to the detection method provided by the present invention, the authenticity of the security product to be detected can be judged by comparing the difference between the first coded information and the second coded information correspondingly generated by the infrared light irradiation security pattern twice before and after. The detection method has the advantage of simple operation.

Specifically, if the first encoded information and the second encoded information are the same, the security artifact is false, otherwise, the security artifact is true.

In the specific implementation process of the present invention, the irradiation time of the above-mentioned ultraviolet light is generally not more than 1 min, usually not more than 10 seconds, such as 5 seconds, 4 seconds, 3 seconds, 2 seconds or 1 second; the irradiation time of the infrared light is generally not more than 1min, usually can also be controlled within 10 seconds; generally stop ultraviolet light irradiation for about 2 seconds, usually within 0.2 seconds, such as 10-30ms, you can further use infrared light to illuminate the security pattern. In this way, "fast charging and fast discharging" is realized, that is, the irradiation time of ultraviolet light, the irradiation time of infrared light, or the time interval between ultraviolet light irradiation and infrared light irradiation can be very short, so that the detection of safety products is relatively short. fast.

The above detection method can be performed in sequence according to the above steps, and can also be adjusted according to actual needs. In a specific embodiment of the present invention, the detection method of a safety product includes the following steps in sequence:

1) Use UV light to illuminate the security pattern;

2) After stopping the ultraviolet light irradiation, use the infrared light to illuminate the security pattern, and obtain the generated second encoded information;

3) use infrared light again to illuminate the security pattern on the security product to be detected, and obtain the generated first encoded information;

4) Compare whether the first encoded information and the second encoded information are the same.

As mentioned above, since the safety product provided by the present invention can realize "fast charging and fast discharging", in step 3), when the infrared light is irradiated again, the generated coded information should also be the same as the coded information in step 2). There is a difference, so it is still possible to judge the authenticity.

It can be understood that the detection method provided by the present invention is not only applicable to the security product to be detected in a static state, but also applicable to the security product to be detected in a moving state.

The present invention also provides a detection system for implementing the above detection method, comprising an ultraviolet light source, an infrared light source, a detector and a logic control device, wherein,

The ultraviolet light source and the infrared light source are used to emit ultraviolet light and infrared light, respectively;

The detector is used to detect the emitted light emitted by the security pattern when the security pattern is irradiated by infrared light twice, and respectively form a detection signal;

The logic control device is configured to correspondingly generate the first encoded information and the second encoded information according to the respectively formed detection signals, and compare whether the first encoded information and the second encoded information are the same.

Specifically, it is usually possible to control the excitation power of the UV light source to be less than 6W, such as 3W or 4W, such as the UV LED flashlight (365nm, 3W) of Japan Nicha Company, or the hand-held UV lamp (4W, 254nm) of Beijing Tianmai Henghui Light Source Company ); usually control the excitation power of the infrared light source less than 1W, such as 200-300mW, such as the 980nm infrared light source (300mW) of Changchun New Industry Optoelectronics Technology Co., Ltd.

The present invention does not specifically limit the detector used, and may be a photodetector commonly used in the art, which generally includes an optical filter to detect the emitted light generated by the security pattern and form a detection signal.

The logic control device may specifically include a signal receiving module and a logic judging module. The signal receiving module is used to receive the detection signal; the logic judgment module is used to convert the detection signal into corresponding encoded information, compare whether the two encoded information are the same, and give the comparison result

Further, the above-mentioned logic control device can also be used to control the operation of the infrared light source and the ultraviolet light source, including but not limited to controlling the irradiation time and the irradiation sequence. Correspondingly, the logic control device may also include a program control module, the working principle of which is roughly the same as that of the current programmable controller, and a built-in control program to control the irradiation time and irradiation sequence of the infrared light source and the ultraviolet light source.

The above-mentioned detection system can perform authenticity detection on the security products in a stationary state and a moving state.

The present invention also provides another detection system, including an infrared module, an ultraviolet module, and a logic control module, wherein:

The infrared module is used to irradiate the security pattern with infrared light twice successively, and obtain the corresponding emission light emitted by the security pattern, so as to form the first encoded information and the second encoded information respectively;

The UV module is used to irradiate the security pattern with UV light;

The logic control module is used to compare whether the first encoded information and the second encoded information are the same, so as to judge the authenticity of the security product or the security product.

The detection system is especially suitable for the detection of moving security articles. In order to further facilitate detection, the above-mentioned infrared module may include a first infrared module and a second infrared module, wherein the first infrared module is used to first emit an infrared light source to illuminate the security pattern, and form a first code according to the emitted light emitted by the security pattern. information; the second infrared module is used to emit an infrared light source to illuminate the security pattern after the ultraviolet module stops working, and form second encoded information according to the emitted light emitted by the security pattern.

It can be understood that the setting order of the first infrared module, the second infrared module and the ultraviolet module should be based on the movement direction of the safety product. For example, if the movement direction is horizontal to the right, the first infrared module and the second infrared module can be set respectively. On the left and right sides of the ultraviolet module, during the movement of the security product, they are sequentially irradiated by the infrared light of the first infrared module, the ultraviolet light of the ultraviolet module and the infrared light of the second infrared module.

The detection system determines the authenticity of the security product according to the following steps:

1. The first infrared module irradiates the security pattern with infrared light, and obtains the emitted light of the security pattern under the illumination of the infrared light source, and forms the first encoded information;

2. The UV module irradiates the security pattern with UV light;

3. The second infrared module irradiates the security pattern with infrared light, and obtains the emitted light of the security pattern under the illumination of the infrared light source to form the second encoded information

4. The logic control module determines the authenticity of the security product: if the first encoded information and the second encoded information are different, the security product is true; if they are the same, the security product is false.

Further, the above-mentioned logic control module is also used to control the work of the infrared module and the ultraviolet module, including but not limited to controlling the working order and working time of the infrared module and the ultraviolet module.

In the security product provided by the present invention, the security pattern has two mutual first areas and second areas, wherein the first area is a non-writable security information graphic area, and the second area is a readable and writable security information area. Graphic area. The authenticity of the security product can be judged according to whether the encoded information of the two regions is the same under two infrared light irradiations. Therefore, the security product has the characteristics of convenient detection and high concealment, and can also realize rapid detection. Moreover, the safety product not only has good chemical stability and thermal stability, but also has the characteristics of environmental friendliness.

The detection method for safety products provided by the present invention has the advantages of simple operation and high efficiency, and is beneficial to practical application and popularization.

In the detection system provided by the present invention, the instruments used in the detection system can be conventional instruments and equipment in the field, which is conducive to the authenticity detection of security products, and is applicable to security products in a moving state or a static state.

Another detection system provided by the present invention has a simple structure, and is especially suitable for the authenticity detection of security products in a moving state.

Description of drawings

1 is a flowchart of a detection method for a security product provided by an embodiment of the present invention;

FIG. 2 is a schematic diagram of changes in the detection process of the security product provided in Embodiment 1 of the present invention;

3 is a schematic diagram of changes in the detection process of the security product provided in Embodiment 2 of the present invention;

4 is a schematic diagram of changes in the detection process of the security product provided in Embodiment 3 of the present invention;

5 is a schematic diagram of changes in the detection process of the security product provided in Embodiment 4 of the present invention;

6 is a schematic diagram of changes in the detection process of the security product provided in Embodiment 5 of the present invention;

7 is a schematic diagram of changes in the detection process of the security product provided in Embodiment 6 of the present invention;

8 is a schematic diagram of changes in the detection process of the security product provided in Embodiment 7 of the present invention;

9 is a schematic diagram of changes in the detection process of the security product provided in Embodiment 8 of the present invention;

10 is a schematic diagram of changes in the detection process of the security product provided in Embodiment 9 of the present invention;

FIG. 11 is a schematic diagram of changes in the detection process of the security product provided in Embodiment 10 of the present invention;

FIG. 12 is a schematic diagram of changes in the detection process of the security product provided in Embodiment 11 of the present invention;

13 is a schematic diagram of the change of the security product provided in Embodiment 12 of the present invention during the detection process;

FIG. 14 is a schematic diagram of changes in the detection process of the security product provided in Embodiment 13 of the present invention;

FIG. 15 is a schematic diagram of changes in the detection process of the security product provided in Embodiment 14 of the present invention;

16 is a schematic diagram of a working state of a detection system provided by an embodiment of the present invention;

FIG. 17 is a schematic diagram of a working state of a detection system provided by another embodiment of the present invention.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Example 1

This embodiment provides a security product, wherein the security pattern includes a first area and a second area, wherein the first area is obtained by printing with ultraviolet fluorescent ink, and the second area is obtained by printing with anti-counterfeiting ink, and the anti-counterfeiting ink belongs to offset printing ink, The specific formula is shown in Table 1 below.

Among them, the above-mentioned photo-excited luminescent material is Sr ₂ SnO ₄ : 0.5%Sb ³⁺ , which is the reference "Wang Zhilong, Zheng Guisen, Wang Shiqin, et al. Study on the luminescent properties of a new electron-trapping optical storage material Sr ₂ SnO ₄ : Sb ³⁺ . Acta Physica Sinica, 2012, 61(12): 511-516.” was synthesized by the method described in.

Table 1

component name Quality Score (%) Phenolic Resin 30 Polyurethane Modified Alkyd Resins twenty three calcium carbonate 25 wax 2 light-excited luminescent material 16 mineral oil 2 desiccant 2

The first region emits visible light under the irradiation of ultraviolet light, but the color does not change under the irradiation of infrared light. The second region emits fluorescence under ultraviolet light irradiation, and further emits visible light under infrared light irradiation; if directly irradiated with infrared light without ultraviolet light irradiation, the second region does not exhibit up-conversion luminescence.

The detection method of the safety product in this embodiment is shown in Figure 1, and specifically includes the following steps:

1. Use infrared light to illuminate the security pattern on the security product to be detected, and obtain the generated first encoded information;

2. After stopping infrared light irradiation, use ultraviolet light to illuminate the security pattern;

3. After the ultraviolet light irradiation is stopped, use the infrared light to illuminate the security pattern, and obtain the generated second encoded information;

4. Compare whether the first encoded information and the second encoded information are the same.

Specifically, as shown in FIG. 2, in step 1, when infrared light is used to illuminate the security pattern, neither the first area nor the second area emits light, then the first encoded information is "00"; in step 2, when When the security pattern is irradiated with ultraviolet light, both the first area and the second area emit light, and the encoded information is "11"; in step 3, when the security pattern is irradiated with infrared light, the first area does not emit light, and the second area emits light. Then the second encoded information is "01"; in step 4, since the first encoded information and the second encoded information are different, the security product is true.

Example 2

This embodiment provides a security product, the security pattern of which includes a first area and a second area, wherein the first area is printed with a mixed ink composed of ultraviolet fluorescent ink and infrared up-conversion ink, and the second area is made of anti-counterfeiting ink Obtained by printing, the anti-counterfeiting ink belongs to gravure printing ink, and the specific formula is shown in Table 2 below:

Table 2

Material name Quality Score (%) Phenolic Resin 30 Polyurethane Modified Alkyd Resins 25 calcium carbonate 20 wax 5 light-excited luminescent material 16 Surfactant 2 desiccant 2

Wherein, the above-mentioned light-excited luminescent material is Sr _2.9896 SiO ₅ : 0.01Eu ²⁺ , 0.0004Tm ³⁺ , which are references "XiaLiu, Jiahua Zhang, Xia Zhang et al.Strongly enhancing photostimulatedluminescence by doping Tm ³⁺ in Sr ₃ SiO ₅ . : Eu ²⁺ .Optics Letters, 2013, 38(2): 148-150.” was synthesized by the method in.

The first region emits visible light under ultraviolet light and infrared light irradiation; the second region emits fluorescence under ultraviolet light irradiation, and further emits visible light under infrared light irradiation; The second region does not exhibit up-conversion luminescence.

The detection method of the safety product in this embodiment is the same as that of Embodiment 1, and the specific process can be seen in FIG. 1 . Among them, as shown in Figure 3, in step 1, when infrared light is used to illuminate the security pattern, the first area emits light and the second area does not emit light, then the first encoded information is "10"; in step 2, when using When the security pattern is irradiated with ultraviolet light, the first area and the second area both emit light, and the encoded information is "11"; in step 3, when the security pattern is irradiated with infrared light, both the first area and the second area emit light, then The second encoding information is "11"; in step 4, since the first encoding information and the second encoding information are different, the security product is true.

Example 3

This embodiment provides a security product, wherein the security pattern includes a first area and a second area, wherein the first area is obtained by printing with infrared up-conversion ink, and the second area is obtained by printing with anti-counterfeiting ink, and the anti-counterfeiting ink belongs to gravure printing Ink, the specific formula is shown in Table 3 below:

table 3

Material name Quality Score (%) Phenolic Resin 30 Polyurethane Modified Alkyd Resins 25 calcium carbonate 20 wax 5 light-excited luminescent material 16 Surfactant 2 desiccant 2

Among them, the photo-excited luminescent material is Ca _0.965 Al ₂ Si ₂ O ₈ : 0.5% Tb ³⁺ , 3% Dy ³⁺ , which is the reference document "MingLi, Xue Yu, Xuhui Xu et al. Color Variation Between PSL and PL in CaAl ₂ Si ₂ O ₈ : Tb ³⁺ with the Assistance of Trap Level. Journal of the American Ceramic Society, 2015, 98(7): 2008-2010. It was synthesized by the method in.

The first region emits visible light under infrared light irradiation; the second region emits fluorescence under ultraviolet light irradiation, and further emits visible light under infrared light irradiation; if directly irradiated with infrared light without ultraviolet light irradiation, the second region Does not render up-converted luminescence.

The detection method of the safety product in this embodiment is the same as that of Embodiment 1, and the specific process can be seen in FIG. 1 . Among them, as shown in Figure 4, in step 1, when infrared light is used to illuminate the security pattern, the first area emits light, and the second area does not emit light, then the first encoded information is "10"; in step 2, when using When ultraviolet light irradiates the security pattern, the first area does not emit light, and the second area emits light, and the encoded information is "01"; in step 3, when infrared light is used to illuminate the security pattern, both the first area and the second area emit light, Then the second encoded information is "11"; in step 4, since the first encoded information and the second encoded information are different, the security product is true.

Example 4

This embodiment provides a security product, wherein the security pattern includes a first area and a second area, wherein the first area is obtained by printing with ultraviolet fluorescent ink, and the second area is obtained by printing with anti-counterfeiting ink, and the formula of the anti-counterfeiting ink is the same as The anti-counterfeiting inks in Example 1 are exactly the same.

The first region emits visible light under ultraviolet light irradiation; the second region emits fluorescence under ultraviolet light irradiation, and further emits visible light under infrared light irradiation; if it is directly irradiated with infrared light without ultraviolet light, the second region does not emit light. Renders up-converted luminescence.

The detection method of the safety product in this embodiment is the same as that of Embodiment 1, and the specific process can be seen in FIG. 1 . Among them, as shown in Figure 5, in step 1, when infrared light is used to illuminate the security pattern, neither the first area nor the second area emits light, then the first encoded information is "00"; in step 2, when using When ultraviolet light illuminates the security pattern, both the first area and the second area emit light, and the encoded information is "11"; in step 3, when infrared light is used to illuminate the security pattern, the first area does not emit light, and the second area emits light. Then the second encoded information is "01"; in step 4, since the first encoded information and the second encoded information are different, the security product is true.

Example 5

This embodiment provides a security product, wherein the security pattern includes a first area and a second area, wherein the first area is obtained by printing with infrared up-conversion ink, and the second area is obtained by printing with anti-counterfeiting ink. The formula of the anti-counterfeiting ink is It is exactly the same as the anti-counterfeiting ink in Example 2.

The first region emits visible light under infrared light irradiation; the second region emits fluorescence under ultraviolet light irradiation, and further emits visible light under infrared light irradiation; if directly irradiated with infrared light without ultraviolet light irradiation, the second region does not emit light. Renders up-converted luminescence.

The detection method of the safety product in this embodiment is the same as that of Embodiment 1, and the specific process can be seen in FIG. 1 . Among them, as shown in Figure 6, in step 1, when infrared light is used to illuminate the security pattern, the first area emits light, and the second area does not emit light, then the first encoded information is "10"; in step 2, when using When ultraviolet light illuminates the security pattern, both the first area and the second area emit light, and the encoded information is "01"; in step 3, when infrared light is used to illuminate the security pattern, the first area does not emit light, and the second area emits light. Then the second encoded information is "11"; in step 4, since the first encoded information and the second encoded information are different, the security product is true.

Example 6

The present embodiment provides a security product, the security pattern of which includes two first regions and one second region, wherein the first region on the left, the second region in the middle, and the first region on the right are respectively UV fluorescent Ink, anti-counterfeiting ink and infrared up-conversion ink are printed. The anti-counterfeiting ink is exactly the same as the anti-counterfeiting ink used in Example 3.

The detection method of the safety product in this embodiment is the same as that of Embodiment 1, and the specific process can be seen in FIG. 1 . As shown in FIG. 7 , in step 1, when infrared light is used to illuminate the security pattern, the first area on the left side and the second area in the middle do not emit light, and the first area on the right side emits light, then the first code The information is "001"; in step 2, when the security pattern is irradiated with ultraviolet light, the first area on the left and the second area in the middle both emit light, and the first area on the right does not emit light, then the encoded information is "110" ”; in step 3, when using infrared light to illuminate the security pattern, the first area on the left does not emit light, the second area in the middle and the first area on the right both emit light, then the second code information is “011” ; In step 4, since the first encoded information and the second encoded information are different, the security product is true.

Example 7

This embodiment provides a security product, wherein the security pattern includes two first areas and one second area, wherein the first areas on both sides are printed with ultraviolet fluorescent ink, and the second area in the middle is made of anti-counterfeiting Ink printing is obtained. The anti-counterfeiting ink is exactly the same as the anti-counterfeiting ink used in Example 3.

The detection method of the safety product in this embodiment is the same as that of Embodiment 1, and the specific process can be seen in FIG. 1 . Wherein, as shown in FIG. 8, in step 1, when infrared light is used to illuminate the security pattern, the first area on both sides and the second area in the middle do not emit light, then the first encoded information is "000"; in step In step 2, when the security pattern is irradiated with ultraviolet light, all three regions emit light, and the encoded information is "111"; in step 3, when the security pattern is irradiated with infrared light, the first regions on both sides do not emit light, When the second area in the middle emits light, the second coded information is "010"; in step 4, since the first coded information and the second coded information are different, the security product is true.

Example 8

This embodiment provides a security product, wherein the security pattern includes two first regions and one second region, wherein the first regions on both sides are printed with infrared up-conversion luminescent ink, and the second region in the middle is Printed with anti-counterfeiting ink. The anti-counterfeiting ink is exactly the same as the anti-counterfeiting ink used in Example 3.

The detection method of the safety product in this embodiment is the same as that of Embodiment 1, and the specific process can be seen in FIG. 1 . Wherein, as shown in FIG. 9 , in step 1, when infrared light is used to illuminate the security pattern, the first areas on both sides emit light, and the second area in the middle does not emit light, and the first encoded information is "101"; In step 2, when the safety pattern is irradiated with ultraviolet light, the first areas on both sides do not emit light, and the second area in the middle emits light, and the encoded information is "010"; in step 3, when the safety pattern is irradiated with infrared light When the pattern is displayed, the first area on both sides and the second area in the middle emit light, and the second code information is "111"; in step 4, since the first code information and the second code information are different, the security product is true.

Example 9

The present embodiment provides a security product whose security pattern includes two first areas and two second areas, and the first areas and the second areas are alternately arranged. The first regions are both printed with ultraviolet fluorescent ink, and the two second regions are printed with anti-counterfeiting ink. The anti-counterfeiting ink is exactly the same as the anti-counterfeiting ink used in Example 3.

The detection method of the safety product in this embodiment is the same as that of Embodiment 1, and the specific process can be seen in FIG. 1 . Wherein, as shown in FIG. 10, in step 1, when infrared light is used to illuminate the security pattern, neither the two first areas nor the two second areas emit light, then the first encoded information is "0000"; in step 2 In step 3, when the security pattern is irradiated with ultraviolet light, the two first areas and the two second areas do not emit light, and the encoded information is "1111"; in step 3, when the security pattern is irradiated with infrared light, the two first areas One area does not emit light, and both second areas emit light, then the second encoded information is "0101"; in step 4, since the first encoded information and the second encoded information are different, the security product is true.

Example 10

The present embodiment provides a security product whose security pattern includes two first areas and two second areas, and the first areas and the second areas are alternately arranged. The first regions are both printed with infrared up-conversion luminescent ink, and the two second regions are printed with anti-counterfeiting ink. The anti-counterfeiting ink is exactly the same as the anti-counterfeiting ink used in Example 3.

The detection method of the safety product in this embodiment is the same as that of Embodiment 1, and the specific process can be seen in FIG. 1 . Wherein, as shown in FIG. 11, in step 1, when infrared light is used to illuminate the security pattern, both the two first regions emit light, and neither of the two second regions emit light, then the first encoded information is "1010"; In step 2, when the security pattern is irradiated with ultraviolet light, neither of the two first regions emits light, and both of the second regions emit light, and the encoded information is "0101"; in step 3, when the security pattern is irradiated with infrared light When all the four areas emit light, the second code information is "1111"; in step 4, since the first code information and the second code information are different, the security product is true.

Example 11

This embodiment provides a security product, the security pattern of which includes four first areas and two second areas, from left to right: the first area (printed by ultraviolet fluorescent ink), the second area (using anti-counterfeiting ink) Ink printing), first area (printed by infrared up-conversion luminescent ink), first area (printed by ultraviolet fluorescent ink), second area (printed by anti-counterfeiting ink), first area (printed by infrared up-conversion ink) printed with luminescent ink). The anti-counterfeiting ink is exactly the same as the anti-counterfeiting ink used in Example 3.

The detection method of the safety product in this embodiment is the same as that of Embodiment 1, and the specific process can be seen in FIG. 1 . Wherein, as shown in Figure 12, in step 1, when the security pattern is irradiated with infrared light, the first encoded information is "001001"; in step 2, when the security pattern is irradiated with ultraviolet light, the encoded information is "110110" ”; in step 3, when using infrared light to illuminate the security pattern, the second encoded information is “011011”; in step 4, since the first encoded information and the second encoded information are different, the security product is true.

Example 12

This embodiment provides a security product, the security pattern of which includes four first areas and two second areas, from left to right: the first area (printed by ultraviolet fluorescent ink), the second area (using anti-counterfeiting ink) Ink printing), first area (printed by UV fluorescent ink), first area (printed by infrared up-conversion luminescent ink), second area (printed by anti-counterfeiting ink), first area (printed by infrared up-conversion ink) printed with luminescent ink). The anti-counterfeiting ink is exactly the same as the anti-counterfeiting ink used in Example 3.

The detection method of the safety product in this embodiment is the same as that of Embodiment 1, and the specific process can be seen in FIG. 1 . Wherein, as shown in Figure 13, in step 1, when the security pattern is irradiated with infrared light, the first encoded information is "000101"; in step 2, when the security pattern is irradiated with ultraviolet light, the encoded information is "111010" ”; in step 3, when using infrared light to illuminate the security pattern, the second encoded information is “010111”; in step 4, since the first encoded information and the second encoded information are different, the security product is true.

Example 13

This embodiment provides a security product, the security pattern of which includes four first areas and two second areas, from left to right: the first area (printed by ultraviolet fluorescent ink), the second area (using anti-counterfeiting ink) Ink printing), first area (printed by infrared up-conversion luminescent ink), second area (printed by anti-counterfeiting ink), first area (printed by infrared up-conversion luminescent ink), first area (printed by ultraviolet printed with fluorescent ink). The anti-counterfeiting ink is exactly the same as the anti-counterfeiting ink used in Example 3.

The detection method of the safety product in this embodiment is the same as that of Embodiment 1, and the specific process can be seen in FIG. 1 . Wherein, as shown in Figure 14, in step 1, when the security pattern is irradiated with infrared light, the first encoded information is "001010"; in step 2, when the security pattern is irradiated with ultraviolet light, the encoded information is "110101" ”; in step 3, when using infrared light to illuminate the security pattern, the second encoded information is “011110”; in step 4, since the first encoded information and the second encoded information are different, the security product is true.

Example 14

This embodiment provides a security product, the security pattern of which includes four first areas and two second areas, from left to right: the first area (printed by infrared up-conversion luminescent ink), the second area ( Printed with anti-counterfeiting ink), the first region (printed with UV fluorescent ink), the second region (printed with anti-counterfeiting ink), the first region (printed with UV fluorescent ink), the first region (printed with infrared up-conversion) printed with luminescent ink). The anti-counterfeiting ink is exactly the same as the anti-counterfeiting ink used in Example 3.

The detection method of the safety product in this embodiment is the same as that of Embodiment 1, and the specific process can be seen in FIG. 1 . As shown in Figure 15, in step 1, when the security pattern is irradiated with infrared light, the first encoded information is "100001"; in step 2, when the security pattern is irradiated with ultraviolet light, the encoded information is "011110" ”; in step 3, when using infrared light to illuminate the security pattern, the second encoded information is “110101”; in step 4, since the first encoded information and the second encoded information are different, the security product is true.

Example 15

This embodiment provides a detection system for detecting the security products in Embodiments 1-14, which specifically includes: an ultraviolet light source, an infrared light source, a detector, and a logic control device, wherein,

The ultraviolet light source and the infrared light source are respectively used to emit ultraviolet light and ultraviolet light to illuminate the security pattern on the security product;

The detector is used to detect the emitted light emitted by the security pattern when the infrared light irradiates the security pattern twice, and form a detection signal respectively;

The logic control device is used for correspondingly generating the first encoded information and the second encoded information according to the respectively formed detection signals, and compares whether the first encoded information and the second encoded information are the same.

Refer to FIG. 16 for a schematic diagram of the working state of the detection system, and refer to FIG. 1 for the workflow of using the detection system to detect security products, including the following steps:

1. Use an infrared light source to irradiate the security pattern with infrared light, and at the same time, use a detector to detect the emitted light generated by the security pattern, and send the generated first detection signal to the logic control device;

2. Use ultraviolet light source to irradiate the security pattern with ultraviolet light;

3. Use an infrared light source to irradiate the security pattern with infrared light, and at the same time, use a detector to detect the emitted light generated by the security pattern, and send the generated first detection signal to the logic control device;

4. The logic control device correspondingly generates the first encoded information and the second encoded information according to the received first detection signal and the second detection signal, and compares whether the first encoded information and the second encoded information are the same. If they are the same, the security artifact is false; if they are different, the security artifact is true.

Example 16

This embodiment provides a detection system for detecting the security products in Embodiments 1-14, which specifically includes: an infrared module, an ultraviolet module, and a logic control module, wherein:

The infrared module is used to irradiate the security pattern with infrared light twice successively, and obtain the corresponding emission light emitted by the security pattern, so as to form the first encoded information and the second encoded information respectively;

The UV module is used to irradiate the security pattern with UV light;

The logic control module is used to compare whether the first encoded information and the second encoded information are the same.

Specifically, the infrared module includes a first infrared module and a second infrared module, wherein the first infrared module is used to first emit an infrared light source to illuminate the security pattern, and form the first encoded information according to the emitted light emitted by the security pattern; the second The infrared module is used for emitting an infrared light source to illuminate the security pattern after the ultraviolet module stops working, and according to the emitted light emitted by the security pattern, the second encoded information is formed.

In addition, the first infrared module and the second infrared module are respectively arranged on two sides of the ultraviolet module, so that the moving direction of the safety product is horizontal to the right, thereby realizing the detection of the safety product in the moving state.

Refer to Figure 17 for a schematic diagram of the working state of the detection system, and refer to Figure 1 for the workflow of using the detection system to detect security products, which specifically includes the following steps:

1. Use the first infrared module to irradiate the security pattern with infrared light, and obtain the emitted light of the security pattern under the irradiation of the infrared light source to form the first encoded information;

2. The UV module is used to irradiate the security pattern with UV light;

3. Use the second infrared module to irradiate the security pattern with infrared light, and obtain the emitted light of the security pattern under the illumination of the infrared light source to form the second encoded information

4. The logic control module determines the authenticity of the safety product or the safety product: if the first encoded information and the second encoded information are different, the safety product is true; if they are the same, the safety product is false.

It should be noted that, in the description of the present invention, the terms "first region" and "second region" are only used to facilitate the description of different regions, and correspondingly, "first ink" and "second ink" are only For the convenience of describing the inks used in different regions, it should not be understood as indicating or implying a sequential relationship, relative importance, or implying an indication of the number of technical features indicated.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present invention. scope.

Claims (16)

1. A security product, characterized in that, the security product is provided with a security pattern showing luminescent properties, the security pattern comprising at least one first area and at least one second area, wherein: The first region can be excited by infrared light or ultraviolet light to emit light, but cannot be written with anti-counterfeiting information by ultraviolet light; The second region can be written with anti-counterfeiting information by ultraviolet light, and can be further excited by infrared light to emit light only after the anti-counterfeiting information is written by ultraviolet light; The second region emits visible light when irradiated by ultraviolet light, and the irradiation time of the ultraviolet light does not exceed 10 seconds. After the ultraviolet light irradiation is stopped, the afterglow intensity of the visible light weakens to less than 0.32mcd/m ² within 2 seconds, When further irradiated with infrared light, the resulting emitted light was visible light, and the visible light attenuated to less than 0.32 mcd/m ² within 60 seconds. 2. The security product according to claim 1, wherein the first region can only be excited by infrared light to emit visible light; or can only be excited by ultraviolet light to emit visible light; or can be excited by infrared light to emit visible light, It can also be excited by ultraviolet light to emit visible light. 3. The security article of claim 1, wherein the material used to form the second region includes a light-excitable luminescent material. 4. The security article according to claim 3, wherein the light-excited luminescent material is silicate, phosphate, aluminate, tungstate, germanate, gallate, molybdate, At least one of garnet, stannate and zirconate is used as a host material, and at least one of rare earth ions and transition metal ions is used as a luminescent center. 5. The security article according to claim 4, wherein the light-excited luminescent material adopts at least one of Eu ²⁺ , Tb ³⁺ , Sm ³⁺ , Sb ³⁺ and Mn ²⁺ as the luminescent center . 6. The security article of claim 4, wherein the matrix material further comprises co-doped rare earth ions. 7. The security article of claim 6, wherein the co-doped rare earth ions comprise La ³⁺ , Dy ³⁺ , Tm ³⁺ , Sm ³⁺ , Yb ³⁺ and Gd ³⁺ . at least one. 8. The security article according to any one of claims 3-7, wherein the second region is obtained by printing a second ink, and the second ink comprises the following components by weight: 40-60 parts of connecting material, 15-30 parts of filler, 1-5 parts of wax, 0-3 parts of mineral oil, 1-3 parts of surfactant, 1-3 parts of desiccant, and 15- 20 servings. 9. The security product according to any one of claims 1 to 7, wherein the security product is a note of value, a card or a document. 10. The security article of claim 8, wherein the security article is a note of value, a card or a document. 11. A detection method for the security product according to any one of claims 1-10, characterized in that, comprising the steps of: Using infrared light to illuminate the security pattern on the security product to be detected, and obtain the generated first encoded information; After stopping infrared light irradiation, use ultraviolet light to irradiate the security pattern, and the irradiation time of ultraviolet light does not exceed 10 seconds; Within 0.2 seconds after the ultraviolet light irradiation is stopped, use infrared light to illuminate the security pattern, and obtain the generated second encoded information; Compare whether the first encoded information and the second encoded information are the same. 12 . The detection method according to claim 11 , wherein the wavelengths of the two infrared lights are kept the same. 13 . 13. The detection method according to claim 11 or 12, wherein the security product to be detected is in a static state or a moving state. 14. A detection system for implementing the detection method according to any one of claims 11-13, characterized in that, comprising: an ultraviolet light source, an infrared light source, a detector and a logic control device, wherein, The detector is used to detect the emitted light emitted by the security pattern when the security pattern is irradiated by infrared light twice, and respectively form a detection signal; The logic control device is configured to correspondingly generate the first encoded information and the second encoded information according to the respectively formed detection signals, and compare whether the first encoded information and the second encoded information are the same. 15. The detection system according to claim 14, wherein the excitation power of the ultraviolet light source is less than 6W, and the excitation power of the infrared light source is less than 1W. 16. A detection system for implementing the detection method according to any one of claims 11-13, characterized in that, comprising: an infrared module, an ultraviolet module, and a logic control module, wherein: The infrared module is used to irradiate the security pattern twice with infrared light, and obtain the emitted light emitted by the security pattern, so as to form the first encoded information and the second encoded information respectively; The UV module is used to irradiate the security pattern with UV light; The logic control module is used to compare whether the first encoded information and the second encoded information are the same.