The method of authentication objects

 

(57) Abstract:

The invention relates to methods of authentication associated with the identification of securities, documents, money, works of art and objects of industrial production. The inventive protective label formed from consecutive flexible transparent substrate, a transparent termolecular layer, metallized reflective layer and the layer of hot-melt adhesive, write in a clear termolecular layer by hot embossing in relief-phase holograms with visible and hidden laser images, reproduce a visible image when the illumination of the hologram with white light and laser latent image when the illumination of the hologram laser coherent light, with protective label enter the polarizing layer of a photosensitive material, before the protective label set of polarization-coding element, which light blue-green light, and record the polarizing layer of a photosensitive material hidden polarizing image, mounted on the protective label polarizer, light white light and reproduce hidden polarizing image. - Is delivery objects of different nature. 6 C.p. f-crystals, 6 ill.

The invention relates to the field of the problems associated with the identification of securities, documents, money, works of art and objects of industrial production.

There is a method of marking objects in which to reproduce three-dimensional images on the photosensitive substrate to form a region with modified energy properties and register rays of the source of coherent radiation (see , for example, the description on the application France N 2588509, CL 41 M 5/26, publ. 1987).

The disadvantage of this method is the deformation of the structure subjected to the marking material due to the introduction of a special substance, which is unacceptable for the identification of works of art and other valuable items.

There is a method of marking objects, which consists in locally irradiated surface, a source of coherent radiation, the coding applied marks marking and registration of coded marks on the surface of the object by coherent radiation (see, for example, the description of the invention to the patent of Russian Federation N 2065819, CL 41 M 5/26, publ. 1996).

The disadvantage of this method is limited to the tee.

The closest known by its technical essence and the achieved result is chosen as the prototype of the method of authentication objects by forming a protective label placed on the outer surface of the measured object, wherein the protective label formed from consecutive flexible transparent substrate, a transparent termolecular layer, metallized reflective layer and the layer of hot-melt adhesive, write in a clear termolecular layer by hot embossing in relief-phase holograms with visible and hidden laser images, playback of the visible image when the illumination of the hologram with white light and laser latent image by the illumination of the hologram laser coherent light (see, for example, description of the invention the application of the RF N 95117875, CL 42 D 15/00, 1997).

The disadvantages of this method include the complex implementation of the protective label and low-tech manufacturing.

The technical result, which is aimed invention is the enhancement of technological capabilities by increasing the level of protection from spoofing objects of different nature. the formation of the protective label, placed on the outer surface of the measured object, wherein the protective label formed from consecutive flexible transparent substrate, a transparent termolecular layer, metallized reflective layer and the layer of hot-melt adhesive, write in a clear termolecular layer by hot embossing in relief-phase holograms with visible and hidden laser images, playback of the visible image when the illumination of the hologram with white light and laser latent image by the illumination of the hologram laser coherent light, protective label enter the polarizing layer of a photosensitive material, before the protective label set of polarization-coding element, that light blue-green light and put it in the polarizing layer of a photosensitive material hidden polarizing image, mounted on the protective label polarizer, light white light and reproduce hidden polarizing image, a polarizing layer of a photosensitive material disposed on the outer surface of the transparent flexible substrate made of an optically transparent material.

Moreover, the polarizing layer swetocoat transparent flexible substrate is made of a material not affect the state of polarization of light polarization encoding element is made of consecutive polarizer and a photomask with the recorded image, the polarization-coding element is made of consecutive polarizer, a micro for input light, multimode optical fiber and an additional polarizer; a polarization-coding element is made of consecutive polarizer, optical fiber washers and additional polarizer; polarizing the light-sensitive material made of a photopolymer having the ability photostimulated anisotropy, manifested in the form of photoinduced birefringence of light.

In Fig. 1 presents the structure of the protective label from the illuminator and polarization-coded item, printed on certified subject matter, Fig. 2 is an embodiment of the structure of the protective label of Fig. 3 - 5 - ways meaningful implementation of polarization-coding element and registration of the latent polarization image of Fig. 6 is an optical diagram of covert surveillance polarization image.

The way identity pollinatation document banknotes and so on, form a protective label 2, which consists of tandem transparent flexible substrate 3, a transparent termolecular layer 4, the metal reflecting layer 5 and a layer of hot-melt adhesive 6. In transparent termolecular layer 4 by a method of hot stamping write in relief-phase holograms with visible and hidden laser images (Fig. 1).

Additionally, the protective label entered the polarizing layer of a photosensitive material 7, in this case, before the protective label set of polarization-coding element 9, which by means of the illuminator 8 light blue-green light and put it in the polarizing layer of a photosensitive material hidden polarization image (Fig. 1, 2). Next, install the protective label polarizer and light her white light with the subsequent reproduction of the latent polarization image (Fig. 6).

In addition, the polarizing layer of a photosensitive material can be located on the outer surface of the transparent flexible substrate, which may be made of optically transparent material, for example transparent Mylar (Fig. 2).

In the embodiment, asking what esotropia, manifested in the form of photoinduced birefringence of light, can be located between the transparent termolecular layer and a transparent flexible substrate, which must be made of material that does not affect the state used when recording the polarization of light, for example triacetate film (Fig. 1).

When recording a latent polarization polarization image-coding element 9 light blue-green light from the illuminator 8, consisting of the sequentially disposed light source 10, an optical condenser 11 and the blue-green filter 12.

In addition to the above, it can be noted that the polarization-coding element 9 can be made of consecutive polarizer 13 and the photomask 14 the recorded image (Fig. 3) any of consecutive polarizer 15, a micro 16 for input light, a multimode optical fiber 17, the additional polarizer 18 and the intermediate photomask 19 (Fig. 4).

As a variant implementation of the method may perform polarization-coding element from consecutive polarizer 20, the optical fiber washers 21 and additional polaron 24 white light, the polarizer 23 placed on the protective label 2. Visual observation by the operator of the latent polarization image is carried out by overlaying the polarizer 23 and the protective label 2, and rotating the polarizer in the plane of the protective label can be reproduced in the dynamics of the individual elements of the latent polarization image. The polarizer 23 can be made in both traditional optical polarizing elements, such as Polaroid, prisms and so on, and electrically controlled liquid crystal layer.

When the illumination of the hologram can be observed two holographic images: the first image when illuminated with white light external source, recovered holograms "rainbow" image; the second image is visualized hidden laser image (for example, in the form of a code mark, word, letters, and code combination of light points or other), invisible when illuminated with white light, but visible on the screen identifier of the hologram when illuminated hologram laser monochromatic light.

Thus, using the proposed method from the protective label in addition to the two holographic images of DOPOLNITEL used in all sectors of the economy, where it is necessary to solve the problem of protection against forgery or control unauthorized copying and access.

In addition, there is improved performance due to the simplified process of playing and hidden polarization image, which does not require special devices and power sources.

1. The method of authentication objects by forming a protective label placed on the outer surface of the measured object, wherein the protective label formed from consecutive flexible transparent substrate, a transparent termolecular layer, metallized reflective layer and the layer of hot-melt adhesive, write in a clear termolecular layer by hot embossing in relief-phase holograms with visible and hidden laser images, playback of the visible image when the illumination of the hologram with white light and laser latent image by the illumination of the hologram laser coherent light, characterized in that the protective label enter the polarizing layer of a photosensitive material, before the protective label set of polarization-coding element, that light blue-green the gap, mounted on the protective label polarizer, light white light, and reproduce hidden polarizing image.

2. The method of authentication items under item 1, characterized in that the polarizing layer of photosensitive material disposed on the outer surface of the transparent flexible substrate made of an optically transparent material.

3. The method of authentication items under item 1, characterized in that the polarizing layer of a photosensitive material fitted between the transparent flexible substrate and the transparent termolecular layer, and a transparent flexible substrate made of a material that does not affect the polarization state of the light.

4. The method of authentication items under item 1, characterized in that the polarization-coding element made of a consecutive polarizer and a photomask with the recorded image.

5. The method of authentication items under item 1, characterized in that the polarization-coding element made of a consecutive polarizer, a micro for input light, multimode optical fiber and additional polno-coding element made of a consecutive polarizer, optical fiber washers and additional polarizer.

7. The method of authentication items under item 1, characterized in that the polarization of the light-sensitive material is made of a photopolymer having the ability photostimulated anisotropy, manifested in the form of photoinduced birefringence of light.

 

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11 cl

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