A light information anti-counterfeit color changing device

Abstract

A light information anti-counterfeit color changing device includes a light guide channel, one end of the light guide channel is connected with a light condensing block inputted from a light source, the other end is connected with the light transmitting block output from the light source, the light guide channel includes a first light guide strip connecting the light condensing block and a secondlight guide strip connecting the light transmitting block, Between that second light guide strip and the first light guide strip, a triangular prism and a color light projection plate for changing thecolor light of the light source are arranged, the color light projection plate is connected with the second light guide strip for collecting the color light, and the periphery of the second light guide strip is coated with a black light-absorbing coat. The invention is novel in design, simple in structure and convenient in operation. By connecting a white light source on one side of the condensing block, the light source presents seven different colors after passing through a triangular prism, and the light guide bar is connected with the seven different colors, so that the anti-counterfeit identification code on the light guide plate irradiates on the display block to display seven different anti-counterfeit colors.

Description

Technical field [0001] The invention relates to the field of optical path anti-counterfeiting, in particular to an optical information anti-counterfeiting color changer. Background technique [0002] The simple light path inspection anti-counterfeiting design can be widely used in fields that can only be used for one time and require confidentiality or anti-counterfeiting. Before use, it can identify the authenticity of the object and whether it has been used. Once used, it cannot be restored to its original state and can indicate The used state can be used to confirm the authenticity of the product used twice. [0003] Simple light path inspection anti-counterfeiting design products can be widely used in high-end products that require anti-counterfeiting such as wine, cosmetics, and password boxes or where high confidentiality is required. Simple light path inspection anti-counterfeiting products are simple to produce, easy to inspect, and low cost, suitable for large-scale and la...

AI Technical Summary

Problems solved by technology

[0006] Nowadays, with the development of lamination technology and nanotechnology, the development of mold manufacturing technology and precision molding technology, combining the above technologies, it has become simple and feasible to realize the optical path inspection and anti-counterfeiting design products, and the improvement of counterfeiting, counterfeiting and cracking technology, Many traditional anti-counterfeiting technologies have become more and more unreliable, and the market expects more and more confidential anti-counterfeiting technologies to appear. At present, there are many anti-counterfeiting technologies on the market: such as electronic IC code reading anti-counterfeiting technology, laser anti-counterfeiting technology , mechanical non-recoverable anti-counterfeiting technology, etc., but the above technologies have technical defects, are easy to be cracked by interested people, and need to be updated frequently. After a period of time, the products before the update will not be able to distinguish the authenticity. To ensure that authentic products can be bought in a short period of time after the new anti-counterfeiting design is updated, the operation is cumbersome, and it only raises the threshold for counterfeiting, but it cannot prevent counterfeiting by interested people

[0007] For example: electronic IC internal programming, code reader decryption and recognition technology has the advantages of unknowable internal information, anti-reverse programming and other advantages, it is very difficult to crack, but this technology relies on special code readers, it is difficult to popularize and promote, and it cannot be avoided The undamaged part of the IC is used repeatedly, and the code reader needs to be strictly controlled. Once it is lost, it is obtained by the counterfeiter, and the internal programming of the electronic IC is performed by itself, and it is read with a genuine code reader. What is read is considered anti-counterfeiting. It is difficult to identify the real ones. At this time, the use of IC internal programming technology will become an accomplice of counterfeiting, and the technical defects are obvious.

[0008] Another example: mechanical non-recoverable anti-counterfeiting technology, which uses a complex and fragile structure to prevent counterfeiting. It is easy to operate, does not rely on foreign objects, and has an intuitive and obvious effect. Once used, the complex and fragile structure is irreversibly damaged and cannot be reused. , the anti-counterfeiting effect is obvious, but because the complex and fragile structure adopted is a single entity structure, under the development of non-destructive flaw detection technology, the pure mechanical structure is easy to show mountains and dews under X-ray irradiation and CT imaging, exposing the true face, cannot Prevent counterfeiters from forging from the source of the packaging, technical defects are obvious

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