Detection method and detector for multiple color ratio high efficiency false proof luminescent material capable of loading cipher

Abstract

This invention discloses a method and apparatus for measuring counterfeit deterrence material with multiple colour ratios and code loaded. And it comprises a high-density intelligence detecting element with emission, conversion and receiving and is combined with output and magnification processing system of digital signals to synchronously collectively detect, convert and process different areas of the whole object to be measured and let different areas form a set of colour ratio parameters separately. And it solves the problems of outdated measuring method, thin wave range, complicated system and being unable to accomplish multiple codes in the technique field of printing counterfeit deterrence. It is widely used in the counterfeit deterrence of current printing bills, bond papers, badges, marked commodity and of stamp pad used in seal, ink pad, signature and inkstone.

Description

Technical field [0001] The invention relates to an improved luminescent material used as an anti-counterfeiting application in the printing field, in particular to a combination of infrared light-excited multi-band fluorescence technology and digital display detection technology, specifically a multiple color ratio capable of loading codes High-efficiency luminous anti-counterfeiting material detection method and its detector. Background technique [0002] The existing printing field and the materials used, especially related to the anti-counterfeiting of various bills, certificates, badges, and identification products. Because many brand-name products are impacted by counterfeit products, causing huge economic losses for enterprises and institutions, this has led to the continuous development of anti-counterfeiting technology in the printing field. However, the current printing anti-counterfeiting field still has unresolved problems such as limited anti-counterfeiting strength, ...

AI Technical Summary

Problems solved by technology

However, the shortcomings of this detection scheme are: firstly, its detection content is far from fully utilizing the information potential carried by the rare earth-doped luminescent material, and the detection technology relies on the object to be detected—the material, which is excited by a suitable near-infrared light. Under the circumstances, excellent rare earth luminescent materials can emit fluorescence in multiple bands from ultraviolet, violet, blue, green, red and near-infrared. The actual situation is that any excited fluorescent band, regardless of its generation mechanism Or down-conversion, whether it is visible or invisible, can be used as light intensity information codes, and the patent applicant only detects the up-converted visible red, green and blue bands or the excited up-converted visible light, and has not tested the material. After excitation, it can also emit ultraviolet, violet and near-infrared light and the band positions of these lights, and specific detection measures corresponding to them are proposed; second, when detecting fluorescence in each band, narrow-band filters are used. However, the excited Each fluorescent band often has a wider band, and the entire light emission intensity of the entire band represents the light intensity information of the fluorescent band, so the use of narrow-band filters may cause deviations in the light intensity information of the detected fluorescent band; third, The detection device adopts emission-reception separation, that is, the infrared laser element is used as the excitation part, and the detection device is used as the receiving part, which are installed separately, and because of the need to detect the intensity of red, green and blue light, multiple detection devices need to be installed on the bracket (integrating sphere) system, or the use of multiple optical path systems, making the entire detector bulky and more complex in structure

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