RU2743193C1 - Method for reading machine-readable luminescent markings and an optoelectronic device for realizing said method - Google Patents

Abstract

FIELD: computer equipment.

SUBSTANCE: invention relates to computer engineering for reading information media. Disclosed is a method of authenticating machine-readable luminescent marking having the form of contrasting phosphorescent, fluorescent or combined symbols or images, including illumination by pulsed light marking, recording, processing and identification of marking, wherein at least two wavelengths of the emitted light (λ₁ and λ₂) and at least two values of the light flux of the emitted light (F₁ and F₂) are preset; light pulses are illuminated by said wavelengths (λ₁ and λ₂) with said light flux values (F₁ and F₂); recording an image formed by excitation of symbol elements or marking images from illumination by light pulses from each of wavelengths (λ₁ and λ₂) with light flux values (F₁ and F₂); processing the recorded image, identifying the processed image, verifying its authenticity by comparison with the reference image.

EFFECT: technical result consists in broader functional capabilities of full reading of decoded information in several spectral ranges.

16 cl, 6 dwg

Description

The technical field to which the invention relates

The proposed technical solution relates to devices for reading information carriers using electromagnetic radiation, in particular to means of reading information in the form of luminescent symbols and images, and can be used in many fields, including in defectoscopy, forensic science, in industry during production during control. and accounting of products using luminescent labels, images and barcodes, and in other areas.

State of the art

Known portable reading device for decoding bar codes of various types according to the RF patent for utility model No. 148911 (IPC G06K 7/10, publ. 20.12.2014 Bull. No. 35, application: 2014106660, filing date 24.02.2014). A portable reader for decoding bar codes of various types, including direct-applied character marks, contains a body, a handle located behind it and smoothly transitioning into it, an optical part, which includes a lighting unit and a hardware part, and the lighting unit contains LEDs, the pulses of which do not match in time with pulses of backlight LEDs, while the optimal illumination level is determined automatically by adjusting the current in the backlight LEDs, and LEDs are used for illumination, including those with a narrow spectral range of radiation, while the device additionally contains a receiver module for determining the geographical coordinates of a place scanning by signals of the navigation system with a built-in timer-controller, which has a built-in real-time clock with a backup battery, which ensures the establishment of the date, time and place of scanning. The known portable reading device provides decoding of bar codes (bar codes) and at the same time fixing the date, time and coordinates of the scanning location. However, the prior art is not capable of decoding machine readable markings in the form of various characters.

Known portable reading device for decoding character marks of direct application, including from mirror surfaces according to the RF patent for utility model No. 120798 (IPC G06K 7/10, publ. 27.09.2012 bull. No. 27, application: 2012102170, filing date 24.01. 2012), including a housing with a trigger unit, an optical part consisting of a lens and an illumination unit, hardware and software, made in such a way that the scanner illumination unit is made with an additional light cone-shaped attachment made of matte material with built-in LEDs and fixed on the outside of the illumination cameras to significantly increase the illumination area with diffused light flux and use a unique algorithm for controlling the illumination of an external ring light in combination with diffuse illumination in general. The proposed design of the scanner, equipped with a scattering cone-shaped nozzle with built-in LEDs, uses an algorithm for controlling the illumination of an external illuminator in combination with diffuse illumination as a whole, which allows reading and decoding of barcodes, symbolic marks of direct application from mirror glare surfaces. However, this reader does not read machine readable phosphorescent, fluorescent, or combination markings.

A device for reading laser marking of polymers is known according to the RF patent for utility model No. 157471 (IPC G06K 7/10, publ. 10.12.2015 bull. No. 34, application: 2015115409, filing date 04.24.2015). A device for reading laser marking of polymers, characterized by the fact that it contains a system for optical excitation of luminescence of marking signs and a system for its registration, while the excitation system includes a laser ultraviolet (UV) diode, a dichroic filter and a lens installed along the beam path, and the luminescence recording system includes a lens, a dichroic filter, a bandpass filter, a matrix photodetector (CCD) and a control computer installed in the return path of the beam. A known device for reading laser marking of polymers can be used to read and visualize marking signs applied to the polymer hidden in the optical range of light in the form of an image or a digital code. However, the known reader does not provide simultaneous reading of contrast, phosphorescent, fluorescent or combination markings in one attempt.

Known reading device for US patent for invention No. US 8978981 "IMAGING APPARATUS HAVING IMAGING LENS" (IPC G02B9 / 04, H04N5 / 225, H04N9 / 04 publ. 03/17/2015, priority date 06/27/2012). This US patent shows a reader equipped with an imaging unit and an illumination unit. The structure of the device may include a lens for imaging and an array of image sensors. The lighting system of the device includes an illuminator equipped with one or more light sources. The illumination system is configured to detect an image area on a substrate, and project light into an image area. The reader can be configured such that the illumination system emits pulses of light spanning the visible color wavelength ranges during the exposure period of the imaging unit. A disadvantage of the known reader is the inability to read contrast, phosphorescent, fluorescent or combined markings simultaneously during one attempt.

The closest to the claimed technical solution is an optical device for reading luminescent symbols and images under the RF patent for invention No. 2430414 (IPC G06K 7/10, publ. 09/27/2011 bull. No. 27, application: 2010103908, filing date 02/08/2010). The known optical device is intended for reading information in the form of luminescent symbols and images, consists of a window with an array of LEDs exciting luminescence and an optical system projecting the readable information onto the scanner sensor, an optoelectronic system consisting of an electronic control circuit, an optical filter and a lens with a light-guiding illuminator, equipped with an output window, and connected to the body of the data collection terminal or scanner by means of a constructive connector and switching connections to control the LEDs of the device. The switching connections between the scanner and the device are made optically by means of photosensors that receive light pulses from the scanner and are installed in the housing of the device, which control the window and the aiming system. However, the known reader does not provide simultaneous readout of contrast, phosphorescent, fluorescent or combination markings in one attempt.

Disclosure of invention

The technical problem of the claimed invention is to expand the functionality of the use of an optoelectronic device in the form of a removable attachment with any model of a portable imager for reading applied various luminescent markings with the ability to obtain complete and extremely accurate information data.

The technical result of the invention is to provide the ability to fully read the decoded information in several spectral ranges while increasing the reading accuracy of contrast, phosphorescent, fluorescent or combined markings.

The specified technical result is achieved by the method of verifying the authenticity of machine-readable luminescent marking in the form of contrasting phosphorescent, fluorescent or combined symbols or images, including illumination of the marking with pulses of light, registration, processing and identification of the marking, wherein at least two wavelengths of the emitted light (λ_one and λ₂) and at least two values of the luminous flux of the emitted light (Ф_one and f₂); illuminate the marking with pulses of light indicated at least two wavelengths (λ_one and λ₂) with the specified at least two values of the luminous flux (Ф_one and f₂); an image formed by exciting the elements of symbols or images of the marking from illumination by light pulses from each of the mentioned wavelengths (λ_one and λ₂) with the specified at least two values of the luminous flux (Ф_one and f₂); process the registered image, identify the processed image, verifying its authenticity by comparison with the reference image

In addition, the illumination of the marking with light pulses or packets of light pulses is carried out alternately at each specified wavelength (λ ₁ and λ ₂ ), and the values of the luminous flux (Ф ₁ and Ф ₂ ) of the emitted light are changed in amplitude and duration.

The illumination of the marking with light pulses or packets of light pulses is also carried out simultaneously at each specified wavelength (λ ₁ and λ ₂ ), and the values of the luminous flux (Ф ₁ and Ф ₂ ) of the emitted light are changed in amplitude and duration.

In addition, the image processing further includes the registration of time-delayed phosphorescent and / or fluorescent symbols received in intervals between pulses or at the end of a pulse, where each subsequent pulse is supplied by the processor command.

Illumination of the marking is carried out in the spectral ranges from red 550-650 nm, blue 450-500 nm and ultraviolet 350-400 nm. A pulse packet consists of 20 - 50 light pulses with a duration of about 10 - 30 milliseconds applied at intervals equal to the pulse duration. A pulse packet consists of light pulses with a duration of about 10 - 30 milliseconds with different spectral composition, supplied at intervals exceeding the pulse duration of 2-100 time. The marking is illuminated by light pulses with a duration of about 10 - 300 milliseconds with a different spectral composition, and each subsequent pulse is supplied in 10-1000 milliseconds at the command of the processor in the absence of reading the marking.

The specified technical result is also achieved in an optoelectronic device (Fig. 5) intended for reading in the above way the information contained in machine readable markings in the form of contrasting, phosphorescent, fluorescent or combined symbols, or images, consisting of a computing module, a computer, as well as an optical sensor providing spectral selectivity of sensitivity to external radiation and a light-emitting device illumination control unit connected to a computing module, a light-emitting device (LID) connected to a backlight control unit, characterized in that the light-emitting device is configured to set at least two wavelengths of the emitted light and at least two values of the luminous flux of the emitted light, wherein the backlight control unit is configured to set the at least two values of the luminous flux at the said at least two wavelengths for i at least one light-emitting device and the fact that the optical sensor provides transmission in the spectral range of radiation of phosphorescent or fluorescent symbols, as well as the fact that one of the wavelengths of the emitted light (λ ₁ ) is in the spectral transmission range of the optical sensor, and the remaining lengths the waves of the emitted light are in the absorption bands of phosphorescent or fluorescent symbols.

In addition, spectral selectivity is provided in the range from 350 nm to 650 nm, and the wavelengths of fluorescence or phosphorescence, spectral selectivity and one of the wavelengths of the emitted light (λ ₁ ) are the same. In this case, the optical sensor is color (RGB) (Fig. 6), and the radiation wavelength (λ ₁ ) coincides with the wavelengths of the filters of the color sensor R, or G, and the illuminating device forms illumination in the spectral ranges from red 550-650 nm, blue 450-500 nm and ultraviolet 350-400 nm spectral regions; generates a packet of pulses consisting of 20 - 50 light pulses with a duration of about 10 - 30 milliseconds applied at intervals equal to the pulse duration; generates a packet of pulses consisting of light pulses with a duration of about 10-30 milliseconds with a different spectral composition, supplied at intervals exceeding the duration of the pulses by 2-100 times; generates light pulses with a duration of about 10 - 300 milliseconds with a different spectral composition, and each subsequent pulse is supplied in 10-1000 milliseconds at the command of the processor in the absence of marking.

The claimed invention is illustrated in the presented drawings, where

Figure 1 - lighting machine readable markings by light pulses alternately at each specified wavelength

Figure 2 - lighting the marking with light pulses simultaneously at each specified wavelength

Figure 3 - registration of time-delayed phosphorescent and / or fluorescent symbols obtained in the intervals between pulses

Fig. 4 shows the registration of time-delayed phosphorescent and / or fluorescent symbols obtained at the end of the pulse.

Figure 5 - optoelectronic device

FIG. 6 - optoelectronic device with an optical color sensor

Implementation of the invention

The inventive optoelectronic device for reading information is designed to read information encoded in machine-readable contrast, phosphorescent, fluorescent or combined markings by controlling the sequence and duration of light pulses selected in several spectral ranges from red 550-650 nm, blue 450-500 nm and ultraviolet 350-400 nm spectrum region, signal accumulation by the processor of the device and control of the time intervals for activating the sensor of the device.

In this case, the quality of the obtained image of the marking is sufficient for reliable decoding of the information contained in it, regardless of the external illumination and the state of the surface on which the marking is applied.

The claimed method consists in illuminating the luminescent marking symbol with light pulses, aiming, directing and concentrating light pulses on the marking symbol, its spectral excitation, electronic registration, processing and reading the information image of the marking symbol. In this case, lighting and registration of the luminescent marking symbol are performed in several ways:

1. illuminate the readable marking with successive bursts of light pulses with different spectral compositions. Moreover, each packet consists of 20 - 50 pulses with a duration of about 10 - 30 milliseconds applied at specified intervals, for example, equal to the pulse duration. In this case, the sequence of changing the variants of the spectral composition of the pulses is pre-set, for example - a light pulse from the red region of the spectrum 550-650 nm, then - a pulse from the blue region of 450-500 nm, after - a UV light pulse of 350-400 nm, after which the sequence is repeated until the moment the signal is received about the successful reading of the marking or the operator gives the command to end the process;

2. illuminate the readable marking with successive bursts of light pulses of different spectral composition. Moreover, each packet consists of 20-50 pulses with a duration of about 10-30 milliseconds, supplied at specified intervals, for example, equal to the duration of the pulses, while the cycle of changing the options for the spectral composition of the pulses is pre-set, for example, a light pulse from the red spectral region of 550-650 nm , then - a pulse from the blue region 450-500 nm, after - a pulse of UV light 350-400 nm, again - a pulse from the red region, etc. Moreover, each subsequent pulse is given at the command of the processor in the absence of reading the marking, the reading process continues until the fact of reading the marking is fixed or the operator's command arrives at the end of the process;

3. illuminate the readable marking with successive light pulses of about 10 to 30 milliseconds duration with different spectral composition, supplied at specified intervals, for example, equal to the pulse duration. In this case, the sequence of changing the variants of the spectral composition of the pulses is preliminarily set, for example - a light pulse from the red region of the spectrum of 550-650 nm, then - a pulse from the blue region of 450-500 nm, after - a UV light pulse of 350-400 nm. After that, the sequence is repeated until the signal is received to read the marking or the operator's command is received to end the process;

4. illuminate the readable marking with successive light pulses with a duration of about 10-30 milliseconds with different spectral composition, supplied at predetermined intervals, for example, equal to the pulse duration. In this case, the sequence of changing the options for the spectral composition of the pulses is preset, for example - a light pulse from the red region of the spectrum of 550-650 nm, then - a pulse from the blue region of 450-500 nm, then - a UV light pulse of 350-400 nm, the processor sums up the predetermined amount images taken under different lighting conditions and analyzes the result. After that, the sequence is repeated until the signal is received to read the marking or the operator's command is received to end the process;

5. illuminate the readable marking with successive light pulses with a duration of about 10-30 milliseconds with a different spectral composition, supplied at predetermined intervals, for example, exceeding the pulse duration by 2-100 times. In this case, the sequence of changing the variants of the spectral composition of the pulses is preliminarily set, for example - a light pulse from the red region of the spectrum of 550-650 nm, then - a pulse from the blue region of 450-500 nm, after - a UV light pulse of 350-400 nm. After that, the sequence is repeated until the signal is received to read the marking or the operator's command is received to end the process. In this case, the sensor is activated in the intervals between pulses, fixing the time-delayed phosphorescent radiation of the marking;

6. Illuminate the readable marking with light pulses of about 10-300 milliseconds duration with different spectral composition. In this case, the sensor is activated at the end of the pulse, detecting the time-delayed phosphorescent radiation of the marking, and each subsequent pulse is supplied after 10-1000 milliseconds at the command of the processor in the absence of reading the marking. After that, the sequence is repeated until the signal is received to read the marking or the operator's command is received to end the process. Moreover, the sequence of changing the variants of the spectral composition of the pulses is preset, for example - a light pulse from the red region of the spectrum at 550-650 nm, then - a pulse from the blue region of 450-500 nm, then - a UV light pulse of 350-400 nm;

7. illuminate the readable marking with packets of a predetermined number - for example, 3-30 light pulses with a duration of about 10-30 milliseconds each, with a different spectral composition. In this case, the sensor is activated in the intervals between pulses, fixing the time-delayed phosphorescent radiation of the marking, and the processor sums up a predetermined number of images obtained after pulses of light of different spectral composition and analyzes the result. After that, it records the fact of reading the marking or gives a command to repeat the attempt to read it, the process ends when a signal is received to read the marking or the operator's command is received to end the process. Moreover, the sequence of changing the variants of the spectral composition of the pulses is preset, for example, a light pulse from the red region of the spectrum of 550-650 nm, then a pulse from the blue region of 450-500 nm, and then a UV light pulse of 350-400 nm.

The specified optical-electronic device for reading information from machine readable markings consists of an illuminator with LEDs and optical filters. The illuminator is equipped with reflective and / or focusing optical elements. The specified optical-electronic device for reading information from machine-readable markings includes an optical system, it is equipped with optical filters and devices. Also, the composition of the specified optical-electronic device for reading information from machine-readable markings includes an optoelectronic system, which consists of an electronic control circuit, an optical filter and a lens with a light-guiding illuminator equipped with an exit window. In addition, the specified optical-electronic device for reading information from machine-readable markings consists of a power supply system, control and registration of markings images. The system of power supply, control and registration of images of markings includes elements that are made with the ability to control the spectrum, sequence, duration of emitted pulses and time intervals of sensor activation. The elements of the power supply system, control and registration of images of markings include, among other things, a sensor and a processor, which allow, during one reading attempt, to read information encoded in contrast, phosphorescent, fluorescent or combined markings.

The claimed optical-electronic device for reading information from machine-readable markings carries out its work in the following way. The device, when working with a photo scanner, is aimed at the area in which the hidden luminescent symbol is supposedly located. At the beginning of the process of reading and recognizing the luminescent symbols and images of the marking, an illuminator equipped with reflective and / or focusing optical elements illuminates the readable marking with light pulses. An optoelectronic system, consisting of an electronic control circuit, an optical filter and a lens with a light-guiding illuminator, which is equipped with an exit window, controls the illumination LEDs and the aiming system. In this case, the radiation is concentrated by means of LEDs and optical filters in the direction of the readable luminescent marking symbol and its image is spectrally excited in the optical absorption region. During the operation of the illuminator, the readable luminescent marking is illuminated with pulses of light radiation according to the options for controlling the spectral composition, sequence, duration of emitted pulses, signal accumulation and time intervals of sensor activation. In the process of the return path of radiation, the image of the luminescent marking symbol is projected onto the sensor of the device by means of an optical system equipped with optical filters and devices that limit external flares, and then processed and read in the processor of the power supply system, control and registration of the marking images.

At the same time, the power supply system, control and registration of markings images, equipped with a sensor and a processor, controls the processes of illumination, reading and processes the marking image, so that during one reading attempt, it controls the spectral composition, sequence, duration of emitted pulses, signal accumulation, and time intervals of sensor activation, reads information encoded in contrast, phosphorescent, fluorescent or combined markings.

Below are the following examples of reading luminescent markings used in the inventive optoelectronic device according to the present invention.

Example 1.

Reading of markings is carried out based on the use of the illuminator control algorithm, which includes the following elements:

- the readable marking is illuminated with successive packets of light pulses with different spectral composition;

- each packet of light pulses consists of 20 - 50 pulses with a duration of about 10 - 30 milliseconds;

- the specified intervals of the light pulse packets are equal to the pulse duration;

- a predetermined sequence of changing the variants of the spectral composition of pulses: - a light pulse from the red region of the spectrum at 550-650 nm, then - a pulse from the blue region of 450-500 nm, after - a UV light pulse of 350-400 nm;

- the sequence of supplying packets of light pulses is repeated until the moment the signal is received about the successful reading of the marking or the operator's command is given to end the process.

Example 2.

Reading of markings is carried out based on the use of the illuminator control algorithm, which includes the following elements:

- the readable marking is illuminated with successive packets of light pulses with different spectral composition;

- each packet of light pulses consists of 20 - 50 pulses with a duration of about 10 - 30 milliseconds;

- the specified intervals of the light pulse packets are equal to the pulse duration;

- a predetermined cycle of changing the options for the spectral composition of pulses: - a light pulse from the red region of the spectrum 550-650 nm, then - a pulse from the blue region of 450-500 nm, after - a UV light pulse of 350-400 nm, again - a pulse from the red region and etc.,

- each subsequent pulse is given at the command of the processor in the absence of reading the marking, the reading process continues until the fact of reading the marking is fixed or the operator's command is received to end the process.

Example 3.

Reading of markings is carried out based on the use of the illuminator control algorithm, which includes the following elements:

- the readable marking is illuminated with successive pulses of light with different spectral composition;

- the duration of each light pulse is about 10 - 30 milliseconds;

- the specified intervals of light pulses are equal to the pulse duration;

- a predetermined sequence of changing the variants of the spectral composition of pulses: - a light pulse from the red region of the spectrum 550-650 nm, then - a pulse from the blue region of 450-500 nm, after - a UV light pulse of 350-400 nm,

- the sequence of light pulses is repeated until the signal is received to read the marking or the operator's command is received to end the process.

Example 4.

Reading of markings is carried out based on the use of the illuminator control algorithm, which includes the following elements:

- the readable marking is illuminated with successive pulses of light with different spectral composition;

- the duration of each light pulse is about 10 - 30 milliseconds;

- the specified intervals of light pulses are equal to the pulse duration;

- a predetermined sequence of changing the variants of the spectral composition of pulses: - a light pulse from the red region of the spectrum 550-650 nm, then - a pulse from the blue region of 450-500 nm, after - a UV light pulse of 350-400 nm,

- the processor sums up a predetermined number of images obtained under different lighting conditions and analyzes the result,

- the sequence of light pulses is repeated until the signal is received to read the marking or the operator's command is received to end the process.

Example 5.

Reading of markings is carried out based on the use of the illuminator control algorithm, which includes the following elements:

- the readable marking is illuminated with successive pulses of light with different spectral composition;

- the duration of each light pulse is about 10 - 30 milliseconds;

- the specified intervals of light pulses are 2-100 times longer than the pulse duration;

- a predetermined sequence of changing the variants of the spectral composition of pulses: - a light pulse from the red region of the spectrum 550-650 nm, then - a pulse from the blue region of 450-500 nm, after - a UV light pulse of 350-400 nm,

- the sequence of light pulses is repeated until the signal is received to read the marking or the operator's command is received to end the process.

- the sensor is activated in the intervals between pulses and detects the time delayed phosphorescent radiation of the marking image.

Example 6.

Reading of markings is carried out based on the use of the illuminator control algorithm, which includes the following elements:

- the readable marking is illuminated with light pulses with different spectral composition;

- the duration of each light pulse is about 10 - 300 milliseconds;

- the sensor is activated at the end of the pulse and detects the time-delayed phosphorescent radiation of the marking

- supply of each subsequent pulse of light in 10-1000 milliseconds at the command of the processor in the absence of reading the marking,

- the sequence of light pulses is repeated until the signal is received to read the marking or the operator's command is received to end the process.

- a predetermined sequence of changing the variants of the spectral composition of pulses: - a light pulse from the red region of the spectrum of 550-650 nm, then - a pulse from the blue region of 450-500 nm, then - a UV light pulse of 350-400 nm.

Example 7.

Reading of markings is carried out based on the use of the illuminator control algorithm, which includes the following elements:

- the readable marking is illuminated by groups of light pulses with different spectral composition;

- preset number of 3-30 light pulses

- the duration of each light pulse is about 10 - 30 milliseconds;

- the sensor is activated in the intervals between pulses and detects the time delayed phosphorescent radiation of the marking,

- the processor adds up a predetermined number of marking images obtained after pulses of light of different spectral composition and analyzes the result,

- after which the processor records the fact of reading the marking or gives a command to repeat the reading of the marking,

- the reading process ends when a signal is received to read the marking or the operator's command is received to end the process,

- a predetermined sequence of changing the variants of the spectral composition of pulses: - a light pulse from the red region of the spectrum of 550-650 nm, then - a pulse from the blue region of 450-500 nm, then - a UV light pulse of 350-400 nm.

Thus, the inventive method of reading machine-readable markings and an optoelectronic device for its implementation, in comparison with analogues, makes it possible to read decoded information in several spectral ranges during one attempt to read contrast, phosphorescent, fluorescent or combined markings.

The claimed technical solution can be used in the production process in various industries.

Claims (21)

1. A method for verifying the authenticity of a machine-readable luminescent marking in the form of contrasting phosphorescent, fluorescent or combined symbols or images, including lighting the marking with light pulses, registration, processing and identification of the marking, characterized in that - preset at least two wavelengths of the emitted light (λ ₁ and λ ₂ ) and at least two values of the luminous flux of the emitted light (f ₁ and f ₂ ); - illuminate the marking with light pulses indicated at least two wavelengths (λ ₁ and λ ₂ ) with indicated at least two values of the luminous flux (Ф ₁ and Ф ₂ ); - register an image formed by excitation of elements of symbols or images of the marking from illumination by light pulses from each of the mentioned wavelengths (λ ₁ and λ ₂ ) with the specified at least two values of the luminous flux (Ф ₁ and Ф ₂ ); - process the registered image; - the processed image is identified by checking its authenticity by comparison with the reference image. 2. The method according to claim 1, characterized in that the illumination of the marking with light pulses or packets of light pulses is carried out alternately at each specified wavelength (λ ₁ and λ ₂ ), and the values of the luminous flux (Ф ₁ and Ф ₂ ) of the emitted light are changed according to amplitude and duration. 3. The method according to claim 1, characterized in that the illumination of the marking with light pulses or packets of light pulses is carried out simultaneously at each specified wavelength (λ ₁ and λ ₂ ), and the values of the luminous flux (Ф ₁ and Ф ₂ ) of the emitted light are changed according to amplitude and duration. 4. The method according to claim 1, wherein the image processing further includes recording time-delayed phosphorescent and / or fluorescent symbols received at intervals between pulses or at the end of a pulse, where each subsequent pulse is supplied by a processor command. 5. The method according to claim 1, characterized in that the marking is illuminated in the spectral ranges of red 550-650 nm, blue 450-500 nm and ultraviolet 350-400 nm spectral regions. 6. The method according to claim 1, characterized in that the pulse packet consists of 20-50 light pulses with a duration of about 10-30 milliseconds, applied at intervals equal to the pulse duration. 7. The method according to claim. 1, characterized in that the pulse packet consists of light pulses with a duration of about 10-30 milliseconds with a different spectral composition, supplied at intervals exceeding the pulse duration by 2-100 times. 8. The method according to claim 1, characterized in that the marking is illuminated by light pulses with a duration of about 10-300 milliseconds with a different spectral composition, and each subsequent pulse is supplied after 10-1000 milliseconds at the command of the processor in the absence of reading the marking. 9. An optoelectronic device designed to read out the information contained in machine readable markings in the form of contrasting, phosphorescent, fluorescent or combined symbols, or images, by the method of claim 1, consisting of a computing module, a computer, and an optical sensor providing spectral selectivity of sensitivity to external radiation and a control unit for the illumination of light-emitting devices connected to a computing module, a light-emitting device (LIC) connected to a backlight control unit, characterized in that the light-emitting device is configured to set at least two wavelengths of emitted light and at least at least two values of the luminous flux of the emitted light, while the backlight control unit is configured to set the at least two values of the luminous flux at the said at least two wavelengths for the at least one light-emitting device, and the fact that about The optical sensor provides transmission in the spectral range of radiation of phosphorescent or fluorescent symbols, as well as the fact that one of the wavelengths of the emitted light (λ ₁ ) is in the spectral range of transmission of the optical sensor, and the remaining wavelengths of the emitted light are in the absorption bands of phosphorescent or fluorescent symbols ... 10. An optoelectronic device according to claim 9, characterized in that the spectral selectivity is provided in the range from 400 nm to 700 nm. 11. An optoelectronic device according to claim 9, characterized in that the wavelengths of fluorescence or phosphorescence, spectral selectivity and one of the wavelengths of the emitted light (λ ₁ ) coincide. 12. An optoelectronic device according to claim 9, characterized in that the optical sensor is color (RGB) (Fig. 6), and the radiation wavelength (λ ₁ ) coincides with the wavelengths of the filters of the color sensor R, or G, or B ... 13. An optoelectronic device according to claim 9, characterized in that the illuminating device generates illumination in the spectral ranges of red 550-650 nm, blue 450-500 nm, and ultraviolet 350-400 nm spectral regions. 14. An optoelectronic device according to claim 9, characterized in that the illuminating device generates a pulse packet consisting of 20-50 light pulses with a duration of about 10-30 milliseconds, supplied at intervals equal to the pulse duration. 15. An optoelectronic device according to claim 9, characterized in that the illuminating device generates a pulse packet consisting of light pulses with a duration of about 10-30 milliseconds with a different spectral composition, supplied at intervals exceeding the pulse duration by 2-100 times. 16. An optoelectronic device according to claim 9, characterized in that the illuminating device generates light pulses with a duration of about 10-300 milliseconds with a different spectral composition, and each subsequent pulse is supplied after 10-1000 milliseconds at the command of the processor in the absence of reading the marking.

Images