Method and device for authentication marking


The invention relates to a method and apparatus for authentication marking provided in the form of a color marking on objects, in particular printed on the documents, securities, etc., the Technical result is to create a simple optical device using a simple electronic means. A sign of the authenticity of the marking is the magnitude of the slope in a predetermined wavelength range of the spectral curve of a color characteristic of authenticity. Data to determine these quantities are obtained by irradiation labeling in reflected or transmitted light radiation of different wavelengths, using the detectors and device for estimating these quantities. 2 S. and 9 C.p. f-crystals, 4 Il.

This invention relates to a method and to a device for authentication marking provided in the form of a color marking on objects, in particular printed on the documents, securities, etc.,

The prior art known to the application, in particular printed products, such as securities, banknotes, etc., colored signs, in particular, by printing, by means of which on the basis of the attached sign of authenticity can be checked p is the R printing inks for signs/marks of authenticity. For example, printed on the document used for verifying the colored light patterns, for example, a xenon flash lamp. These paints on the basis of the wavelength of such radiation emit due to radiation or reflection fluorescent/fluorescent radiation. It is when subjected to radiation in the detector device spectral analysis and on the basis of the results of spectral analysis to determine whether this irradiated marking a sign of authenticity. Unfortunately, persons engaged in forgery, relatively easy to analyze the authenticity of such printing inks and to forge them. If this is possible, it is possible to cheat the system described authentication and almost make it useless, though, except those specially manufactured for printing inks, it is necessary to apply complex optics with different interference filters, etc. for the corresponding test device.

In line with this, the objective of the invention is to provide a method for such a test device, which costs without any complicated optics and can be implemented in a simple manner by means of conventional electronic components. This device must be pre/p> This problem is solved by using the method according to p. 1 claims, respectively, of a test device according to PP. 4, 5 with modifications in accordance with the relevant dependent claims.

The basis of the invention is the understanding that through appropriate only narrowband irradiation/excitation (paint) marking the authenticity of at least two different from each other (most only slightly overlapping) ranges of wavelengths in a given range of distances between the mean values of wavelengths, we can determine the distinctive values of the intensity characteristic of the dye spectral curve, i.e. the dependence of the intensity on wavelength, respectively, for the average value of the corresponding narrow-band wavelength range. According to the measurement results in multiple, at least two such adjacent narrow wavelength ranges, you can determine the corresponding value of the slope of the specified characteristic spectral lines of this paint and test it as a sign of authenticity.

Other explanations of the method follow from the following description of an embodiment of a test device, rabotajushih is itself usually in a different relationship and applied to this device is known. As mentioned above, for the spectral-analytical paint analysis using various selective relative to the wavelength or custom regarding the selection of the wavelength of the optical device at least transmitting or receiving side.

In contrast, the invention uses the allotted invention is based on the simplification consists in the fact that there is a separate selective transmitting wavelengths and detectors are used, which are not necessarily selective in relation to wavelength. Working according to the invention a test device designed accordingly works so that stipulated in the transfer of radiation of different narrow wavelength ranges occurs according to a preferred variant of execution of the test device only with the separation in time, i.e. never at the same time for different wavelength ranges. In the invention using different radiation sources, preferably luminescent diodes which, when the respective different wavelengths emit radiation only in a narrow range of wavelengths, and that a simple image can be switched by separation in time. Due At selective with respect to wavelength property. It even has the advantage that it is not selective detector, which is equally sensitive for all available wavelengths. This allows you to save proofreading.

If operating according to the invention the test device is made so that it produces a separation in time of the radiation in purposefully set different narrow wavelength ranges and with peripheral devices quantitatively measures coming from marking the authenticity irradiated at the appropriate time, and enters the radiation detector, it is possible to reliably check the appropriate slope of the curve of the measurement signal as a given sign of authenticity. With the invention this can be achieved with correspondingly low engineering costs. Using the invention can be distinguished from each other by various printing inks, i.e., original paint with a sign of authenticity from the other colors that do not have this sign of authenticity. This is true also when used in the invention is a broadband detector is integrated for the entire measured spectral range matching for both paints properties detection.

Below the result is retene and on which is shown: Fig.1 and 1a - schematic diagram of the device according to the invention; Fig.2 - the curves of the spectral values of reflection (print) paints; Fig.3 - scheme of the places of distribution of the colored markings and their validation; Fig.4 is an example implementation of the optics used in the invention.

In Fig. 1 shows in simplified form, the principle of design and operation of the testing device 10 according to the invention. Position 1 is the control unit, with which the selection control with separation in time two transmitter 21and 22for transmission of radiation. When managing transmitters 21he passes the narrow-band radiation of a1. When the control transmitter 22is transmitted from the laser radiation and2. Both radiation a1and a2different average wavelengths of their respective narrow (at least slightly overlapping) ranges of wavelengths. Both wavelengths are specified for design verification device a distance from each other. For such transmitters 21and 22suitable, in particular, semiconductor luminescent diodes, which have relatively narrow ranges of wavelengths of radiation that are available in sootvetstvuyushchaya and1and a2both pointing to the same element of the area marking 3 authentication. From this marking 3 authenticated by irradiation of a1and irradiation and2comes b radiation, which is received by the detector 4. This radiation b depending on whether it is radiation a1or a2has a different wavelength (different wavelengths). However, because the detector 4 is broadband, regardless of whether there was exposure to a1or a2it supplies a corresponding detection signal, which corresponds to detektirovanii intensity of the corresponding (at the appropriate time) of the received radiation b.

Output signals of the detector 4 are received in the evaluation device 5. Through the connection 6 from the control unit 1 receives messages, which of the transmitters 21or 22emits at a given point in time, namely at the time of reception of the detection signal of the detector 4 in the evaluation device 5. This is coming at some point of time in the evaluation device 5 signal detector 4 be referred to the appropriate radiation of a1or a2.

Compound 6 according to Fig.1 may not be the TWT of Fig.1 may be provided with other selective wavelength transmitters (other wavelength ranges), in addition to the transmitters 21or 22that is also split in time irradiate a planar element marking the authenticity and also cause the emission of radiation b. Then adopted by the detector 4, the corresponding radiation can be classified in the relevant wavelength range of the transmitter with the signal connection 6.

Despite the selective wavelength detection, you can use the invention based on the work of separation assurance in the evaluation device 5 unambiguous correlation of the instantaneous signal detector with a certain wavelength (emission of a1or a2or...). The measuring signals of the detector are evaluated by the evaluation device 5 relative to their fixed and variable component of the signal. On this basis, we can appreciate the curves of the emission spectrum of b in the corresponding wavelength range. Using these dynamically measured curves of the evaluation device 7 outputs the result of estimation.

In Fig. 2 shows three colors corresponding reflectance depending on the wavelength. In this case the curve 21 refers to specially selected black paint, which can be used as the selected sign of authenticity. P is innosti). Curve 222 corresponds to the other (normal) paint. In Fig.2 marked with narrow bands 201and 202wavelengths of radiation a1and a2. It is evident from Fig.2 that the values of reflection have different value, i.e., the corresponding values of the radiation intensity b, if appropriate paint (according to the invention, with the separation in time) is irradiated once the radiation of a1and another time radiation and2.Paint (marks of authenticity) with curve 21 receive measured values 23 and 24. These measured values are hidden in the paint with curve 21 sign of authenticity which can be verified by using the device according to the invention. The second paint with curve 22 is for a range of wavelengths of radiation a1and a2different values 123 and 124 of reflection. For the third curve of conventional printing inks receive, for example, 223 and 224 reflection. Of the corresponding pairs of values 23 and 24, 123, and 124, as well as 223 and 224 receive the appropriate curve 21, 22 and 222 corresponding to the average slope between the values of 201and 202wavelength. The steepness of these curves is markedly different from each other. Due to this, it is possible not only to distinguish between the steepness of the curves 21 and 22 in the quality of the 22 from each other as different from each other signs of authenticity.

A test device according to the invention can operate in the ultraviolet, visible and/or infrared spectral ranges, depending on the applied paint sign of authenticity.

Separate transmitters 21, 22,... transfer device 2 to simplify the design regarding the passage of optical paths are located in space as close as possible to each other. The detector 4, which consists of several individual detectors 41, 42,..., preferably has the same arrangement.

Also the preferred option of performing a test device according to Fig.1 is a device according to Fig.1A with a selectively sensitive to certain ranges 201, 202,... of wavelengths of radiation a1, a2,... detection device 4', instead of selectively operating the detector device 4 in Fig.1. It is a selective detector device comprises, for example, a corresponding number of separate selective detectors 4'1, 4'2,..., of which one serves your signal in the evaluation unit 5. In this embodiment, it is possible to carry out the selective transmission of radiation of a1and2,.. . one is W ill result of selective radiation b1b2,.. . to the detector device, and there are accepted selectively separate detectors 4'1, 4'2... and converted into electrical signals to the evaluation device 5. The selectivity of individual detectors 4'1, 4'2,... may be secured by filters or inherent individual detectors selectivity. From the connection 6, as shown in Fig.1, in an embodiment according to Fig.1A, can be waived.

In accordance with the verification result obtained by the verification device according to the invention when the authentication signal in block 7, for example, peripheral devices, as, for example, printing device, stopping or locking device, etc. to manage them. The block 7 may be performed for the processing results of the assessment with the purpose of control, alarm or alarm using, for example, electrical, optical and/or acoustic output. In addition, the evaluation results can be saved as data and/or send to the Central processing unit.

Using the invention it is possible to perform the selection of the place in relation to a specified geometrical arrangement of Marcia is este example) two located in the plane at a distance from each other, caused, for example, to pass the 32 marks 301, 302authentication sign of authenticity according to the invention. In this case, the testing device 10 according to the invention in inserting and pushing (arrow 35) such a ticket through the optical part 11 validation of the device are obtained from the evaluation unit 5 sequentially in accordance with the number of these marks of authenticity (in this case two) confirming signals, namely only when the authenticity of these markings.

As an additional improve the accuracy of authentication can be provided that these two marks 301, 302authentication (and optionally other such marking) additionally differ from each other. You can choose, for example, as attributes different values of the steepness of the spectral curves (see Fig. 2) these two (or more) labels of authenticity. When pushing, respectively, while checking this ticket is the same device 2 and 4 transmission/detection test device 10 must determine sequentially in time and just-in set for ticket sequence such differing from each other is affected each other markings of authenticity.

Attempts to outwit designed testing device according to the invention virtually impossible, as signs of authenticity hidden in the markings of authenticity, i.e., they are printed on ticket, for example, inside the black paint otherwise not distinguishable as marking the authenticity and, if necessary, may be different from each other its a sign of authenticity (the magnitude of the slope).

Instead of or in addition to carried out sequentially in time checking labels of authenticity you can also check at the same time, namely, if the test device is equipped with multiple, distributed on the surface of the measuring stations which simultaneously carry out the verification process in a few appropriate places in the document transmission and receipt of the appropriate radiation and evaluation of the results.

As mentioned above, by using the invention it is possible in a simple manner and with little technical expenditure test, or has no black paint a sign of authenticity, although forming the sign of the authenticity of the paint cannot be visually distinguished from the other (for example, black) paint. This provides the possibility of applying presnostou location for example, in the document.

Printing ink as a sign of authenticity can be provided on the raw material, for example paper, plastic, textile or similar, and/or inside it. They can be applied to the subject, as mentioned above, in the form of any geometric pattern and/or in the form of (more or less) continuous coverage. Paper or similar material can also, for example, to impregnate paint, bearing the sign of authenticity.

In Fig. 4 shows (for example, in addition to Fig.1 and 3) example of the mutual location of the transmitting device 2 and the detector device 4, as well as marking 3 authentication when performing authentication. Directed radiation and the corresponding wavelength range enters the marking 3 authentication. It comes from the subject detection b radiation that enters the detector device 4. Other details of this device for authentication coincide with details already explained and described with reference to Fig.1.

The above description of the invention treated reflected from the marks of authenticity b radiation. As an alternative solution, a method and a corresponding device in the above-described Varian is lektorem 4 reflected radiation b according to Fig.4 when passing through marking the authenticity of radiation b' can be respectively located detector.


1. The authentication method of the object with label (3) authentication in the form of colored sign with the selected color spectrum, and the method comprises the following stages: using a transmitting device (21, 22) produce radiation in at least two different selected within a certain color range discrete wavelengths of radiation directed on or through marking (3) authentication, and when such radiation reflected from the marks (3) authentication or missed through her radiation is taken with the help of the detector device (4, 4’), which determine the intensity of the received radiation, and device evaluation serves match the intensity of the electrical signals, and to choose the radiation wavelength ranges, which are located in the color spectrum marking (3) authentication, are narrow-band and adjacent in a given interval of the average values of wavelengths and only slightly overlap each other, characterized in that as a sign of authenticity marking (3) authentication, set the value rise curve of the reflection or transmission of the selected color spectrum, dipati for a range of wavelengths, and interval of the average values of wavelengths deduce the magnitude of the rise curve of the reflectance or transmittance of a color characteristic of the scanned object and based on a given as a sign of authenticity size lift are checking.

2. The method according to p. 1, characterized in that the two marks (301, 302) authentication with different color spectra, while checking exposed to the same radiation, but separately from each other, with two assigned to each labeling (301, 302) identity to the intensity of the received radiation to determine the magnitude of the lift and check them on the basis of values rise, given as a sign of the authenticity of these color spectrums.

3. The method according to p. 1 or 2, characterized in that the radiation is carried out in different ranges of wavelengths alternately with separation in time.

4. The method according to p. 1 or 2, characterized in that the radiation is carried out in different wavelength ranges simultaneously and that the detector unit (4) selectively divides the received radiation.

5. The device for authentication according to the method according to p. 1, characterized in that it comprises an optical transmitting device (21, 22,...) for re is n radiation the optical detector device (4, 4’) to determine the intensity of the received radiation at least at the selected wavelengths, and transmitting (21, 22) and the detector (4, 4’) of the device is made in such a way that transmitted by the transmitting device (21, 22) radiation falls on the choice intended for checking the authenticity of the markings (3) authentication and coming from her as a result of irradiation of the radiation enters the detector device (4, 4’), which measures the intensity of the received radiation in different discrete wavelengths of radiation and generates proportional to the adopted electrical signals, an electronic evaluation device (5), which depending on the issued detector device (4, 4’) of the electrical signals that determine the magnitude of the rise curve of the reflection or transmission of check marks (3) authenticated and verified on the basis of given as a sign of authenticity of the magnitude of the rise.

6. The device under item 5, characterized in that it comprises a control unit (1), which controls the transmission unit (21, 22so that it transmits radiation in different range the device (4) contains several selective wavelength detectors (4’1, 4’2), each of which has a selective sensitivity in one of the selected wavelength ranges.

8. Device according to any one of paragraphs.5-7, characterized in that the transmitting (21, 22) and the detector (4, 4’) of the device are arranged so that the reflected from the marking (3) the authenticity of the radiation measured by the detector device (4, 4’).

9. Device according to any one of paragraphs.5-7, characterized in that the transmitting (21, 22) and the detector (4, 4’) of the device are arranged in such a way that passed through the marking (3) the authenticity of the radiation measured by the detector device (4, 4’).

10. Device according to any one of paragraphs.5-9, characterized in that the device (5) for the evaluation of the signals of the detector device (4, 4’) is arranged to estimate fixed and variable component of these signals.

11. Device according to any one of paragraphs.5-10, characterized in that the scanned marking (3) authentication is made with the possibility of moving to the transmitting and detector devices.


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FIELD: holograms protection technologies.

SUBSTANCE: method includes recording a hidden image on hologram in form of two-dimensional matrix of light optical points, wherein individual check code is set in predetermined angles of matrix; also, for positioning protective hologram an image of point object is recorded on it, outside limits of mask aperture, and during reading of hidden image protective hologram is displaced until restored image of point object placed outside mask aperture, fits point aperture in micro-diaphragm, and until an electric signal with maximal amplitude is detected at output of positioning control photo-detector, which shows correctness of positioning of protective hologram.

EFFECT: higher efficiency.

2 cl, 7 dwg

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