Laser anti-counterfeit technology including laser holographic security label, encrypted laser holographic image marking and laser lithography technology in three aspects.

Holographic anti-counterfeiting technology includes: 1 the conventional holographic anti-counterfeiting technology, 2 multi-channel holographic anti-counterfeiting technology, 3 stealth encryption technology, 4.360 °computer lattice holographic technology, 5 double holographic technology, 6 fluorescent encrypted holographic technology, 7 dynamic coding anti-counterfeiting technology, 8 telephone code anti-counterfeiting technology, nuclear microporous anti-counterfeit technology and gene technology, and has image clear, colorful, three-dimensional sense of strong, disposable characters. Multi channel holographic anti-counterfeit identification in the rotation, will see the logo in the same location on different patterns. Stealth encryption technology will be produced in the encryption design the logo of a position, in laser-reproduction may be seen under the encrypted pattern. 360 °computer lattice holographic technology in image 360 degrees viewing range will appear radially, ring, spiral spot combination and transformation, dynamic strong. Double holographic technology can make holographic label opened, can see printed pattern and text layer second security, double insurance security. Fluorescent encrypted holographic technology principle and its fluorescence encryption principle. Dynamic code is placed in front of the trademarks, slowly rotate trademark there will be continuous action pattern. Telephone code anti-counterfeit mark is composed of laser anti-counterfeiting technology and the telephone code anti-counterfeiting technology of combining production, by querying the database can check the authenticity of the unification center. Nuclear microporous anti-counterfeit identification by laser anti-counterfeit technology and nuclear microporous anti-counterfeit technology, only one pen can distinguish authenticity. Security is in the identification of genes into gene gum, through a special equipment for testing.

Is a commonly used laser rainbow embossed holographic anti-counterfeiting technology, it is the application of laser rainbow hologram plate technology and embossing technology, products produced by a visual graphic information.

Rainbow holographic image is generally a holographic image as an object, through a series of procedures made of rainbow hologram. As in the use of photoresist etching agent for photographic film to replace the ordinary photo shoot of the hologram, the exposure processing, namely a relief type phase holograms, i.e. making rainbow hologram master. Master surface filled with uneven interference fringes, the fineness of up to more than a thousand per mm. These relief shape stripes recorded a photographed object light intensity and phase information, realization of the holographic recording. Then with vacuum plating or chemical plating method, the master surface coated with a layer of thin metal film, and then the appropriate thickness of the electroplated nickel or other metal, make a good mechanical properties of the molded metal plate. The board is arranged in a stamping press, hot press polyester plastic film, the relief hologram embossing on the film, the last in the film vacuum evaporation a layer of aluminum film, in order to enhance reflectivity. The aluminum film plating or coating protection cover layer, is formed in holographic images, i.e. opaque laser embossed holographic map. This hologram can observe daylight sunlight, each one of the wavelengths of light are pictures of the interference fringes by diffraction, due to different diffraction angle, the different view, a different color reproduction image.

Since the hologram color combination is random code, even if the same equipment is difficult to produce exactly the same holographic mother plate, therefore the rainbow holographic image has been widely used in the production of anti-counterfeit labels. Can also be the hologram directly transfer to paper products, is now widely used in the ticket, the trademark and credit card.

Embossed holographic label color has a single rainbow, a variety of rainbow color, true color and black and white ( ICR ) 4, its image is two-dimensional, three-dimensional, multiple and dynamic imaging.

Laser molding holographic holographic imaging technology is different, can be divided into classic, pulse laser embossed holographic label and molded of synthetic resin, multiple image laser molding, dynamic compression, dynamic grating holographic molding, molded, invisible ink encrypted laser holographic molding etc..

In recent years again bronzing hologram and through type hologram come out, they are in ordinary rainbow hologram based on innovation. The transflective type hologram is polyester film aluminum layer is made into a dot shape and control the dot density, in the reproducing light so that the metal mesh point light reflection, in non metal mesh point forming the transmission of light, and adjust the transmission and reflection ratio, so that through the hologram can see diagram under cover in the text, it is also known as X-ray hologram.

The development of anti-counterfeiting technology, color hologram, synthetic hologram, the hologram ( password using a laser pen can be read out the map information ), come one after another. The laser holographic technique after treatment with anti-counterfeit function of new packaging materials and higher technical level of holographic image identification technology, has better security function.

Using holographic printing technology to make the label that prevent bogus, attached to the surface of the packaging is currently the most popular anti-counterfeiting measures. Holographic image because of the integration of the laser, precision machinery and physics chemistry and other disciplines of the latest achievements, with high technical content. For most small batch forger, a full set of manufacturing techniques and manufacturing equipment purchase difficult, so this technology is remarkable.

Laser holographic anti-counterfeiting technology development history [ ]:

After decades of development, laser holographic anti-counterfeiting products from the original holographic anti-counterfeiting label upgrade stage by stage for the development of the second generation, third generation and fourth generation of laser anti-counterfeiting technology.

The first generation of laser anti-counterfeiting technology is laser molding hologram anti-fake mark.

The hologram is by American scientist Berg ( MJ ·Buerger ) by X ray shooting crystal atomic structure pictures when found, and Gabor ( D ·Gaber ) with the establishment of the holographic theory : the use of the principle of two-beam interference, the object and another object light and the reference beam coherent light beam ( ) to produce an interference pattern can be put up, thereby phase "merge" use photographic film can be recorded at the same time the phase and amplitude, can obtain the holographic image. However, holography is based on interferometry principle photography, must use high density ( resolution ) photosensitive film recording. Due to the common source monochromaticity good, coherence, and holographic technology development is slow, it was difficult to take a decent hologram. Until the early 60 s after the invention of lasers, high brightness, high monochromaticity and high degree of coherence characteristics, the rapid promotion of the holographic technology development, many kinds of the hologram is made, hologram theory is verified, but as a result of shooting and reproducing of the special requirements, from the date of birth, it almost always confined to the laboratory.

The late 70's, people found the hologram includes three-dimensional information of the surface structure (i.e., arranged in a crisscross pattern of interference fringes), this structure can be transferred to the high density of photosensitive film and other materials. In 1980, the United States scientists use embossing holography, the hologram surface structure is transferred to the polyester film, thereby successfully produced the world's first embossing hologram, the laser holographic picture known as rainbow hologram, it is through the laser plate-making, the image made on the plastic film, diffraction effects generated resplendent with variegated coloration, and the picture has a two-dimensional, three-dimensional sense of space, in ordinary light, hidden images, information will return. When light from a specific angle of irradiation, appeared again new image. The embossing hologram can be printed as mass rapid replication, low cost, and can be associated with various types of printed matter using combined. So far, holography to the social application took the decisive step.

Since then the embossing hologram production technology is very advanced technology, only a handful of people to master, and was used as the anti-counterfeiting mark. Its security is the principle:

1 in the laser holographic images of the entire process, if there is a different conditions (such as rainbow holographic condition), the holographic label effect will be different.

2 this hologram holographic information using ordinary camera can not be shot, so the holographic pattern to be copied.

The first application of holographic picture as the anti-fake mark is JohnnyWalkeWhishy ( a whiskey ). It is applied in Thailand, said that sales were up about 45%.

Laser embossed holographic technology introduced to China is in 80 time end at the beginning of 90 time, especially 1990 to 1994 period, the country imported production line 100, occupying more than half of the world production factory. Introduced in the early, the anti-counterfeiting technology played an important role of the security, but with the passage of time, laser holographic image production technology spread rapidly, has now been counterfeiters from various aspects of a fortress, almost completely lost the ability of security.

The second generation of improved laser holographic anti-counterfeiting technology

The first generation of laser holographic anti-counterfeit technology spread, promote people to begin to seek improvements to existing technologies. The improved technology mainly has three kinds: one is the application of computer image processing technology to improve the holographic image; two is a transparent laser holographic anti-counterfeiting technology; three is the reflection of the laser holographic security technology.

Application of computer image processing technology to improve the 1 holographic image

Computer image processing technology to improve the laser holographic image experienced two forms, the first form is computer-generated holographic technology, this technology is the ordinary series of 2D images by optical imaging, imaging principle in accordance with the holographic image after processing is recorded in a holographic recording material, thereby forming computer pixel hologram. Observation of this pixel holographic images, can be in different point of view of different three-dimensional images, the graphics and colors have unusually flexible dynamic effect, and is not influenced by the reproducing light direction restriction. The second form is computer controlled direct exposure technique, and ordinary hologram imaging, this technique does not require a subject, a desired pattern is generated by a computer, through the computer control of coherent beams in pixels generated by all the patterns on different point, can change the angle between the two beams, which are made with special effect 3D hologram.

The 2 transparent laser holographic anti-counterfeiting technology

Ordinary laser holographic image is generally aluminized polyester film after molding ( also can be the first to use polyester film after molding and aluminum and aluminum ), the effect is an increase in the intensity of the reflected light to reproduce the image brighter. Illumination and viewing direction are observed in this side, this laser rainbow embossed hologram is opaque. Transparent laser holographic image is actually cancelled the aluminizing layer, the holographic image directly molded in transparent polyester film. In 1996 China's Ministry of public security will be transparent laser holographic image application in the resident identity card, ID card with transparent film overall coverage, in the light of identity card, not only can see the contents of certificates, can see a transparent membrane show 2D, 3D rainbow holographic image ( " the Great Wall " and " China ". English words ).

The 3 reflective laser holographic anti-counterfeiting technology

The reflected laser holographic imaging principle is the incident laser light to the transparent holographic emulsion medium, a portion of the light as reference light, another part through the medium of illuminated objects, the object in a scattering medium as a back light, object light and reference light interfere with each other, in the medium to multilayer interference fringes, dielectric film after treatment in medium internal generation of multilayer translucent reflective surface ( for example 6 microns thick layer of latex can have more than 20 reflector ), with a white light source irradiating the hologram, medium generated inside the multilayer translucent reflective surface reflects the light back towards the reflected light, can see the original image, which is called the reflected laser hologram.

The third generation of the encrypted hologram anti-counterfeiting technology

Encrypted holographic image refers to the use of such as laser reading, optical shrink, low-frequency lithography, random interference fringes, moire fringe and so on optical image encryption technology, the security of image encryption is not visible or into some speckle image encryption.

1 laser reading

Using the optical conjugate principle, text or image information is stored in a holographic image. Under normal circumstances, these information do not appear, when using a laser pointer beam, people can make use of sulfuric acid paper or white saw the stored information. The stored information can be text, logo, image, or even an article, form of expression have reflective and transmissive two.

The 2 optical shrink

The text messages with optical shrink way recorded in the hologram, usually naked eye is difficult to identify, in 10 times, even 100 times under the magnifying glass can be observed in specific content, in general, Chinese can be reduced to 0.1mm, English can be reduced to 0.05mm

3 low-frequency lithography

In a hologram to non interference will be predesigned stripe patterns in microfilm form directly recorded in the hologram, the pattern of the fringe density is 10 times lower than the ordinary interference fringes in the 100 line is about /mm, the visual effect is in the hologram of certain parts with similar metallic luster of the diffraction pattern, if the stripe pattern is the use of computer generated hologram, available laser reproducing its information.

4 random interference fringe

In making hologram into the stochastic mechanism, the hologram of random interference pattern, this pattern has obvious feature, and can not be repeated, even though the same person using the same process at different moments generated by the patterns are not the same, it is a good way to prevent bogus. In addition to static plane interference fringes, has now developed to the dynamic, three-dimensional interference fringes, counterfeiters can not copy.

5 moire interference encryption

Using moire principle, i.e. two sets of periodic structure can produce third sets of stripes overlapping cycle patterns in principle, in which the set of stripes in the change of its phase and encodes a pattern, the pattern is usually hidden cannot tell, when compared with another set of periodic fringe overlapping pattern emerged.

Encrypted holographic image because it is not visible or only show a light, if no key is hard to decipher, so it has a certain anti-counterfeit function. But because it in the usual circumstances can not be resolved, therefore do not have to the general public recognition ability.

The fourth generation of laser holographic anti-counterfeiting technology

1 combinations of hologram

Composite hologram is dozens or even hundreds of different two-dimensional images by dozens or even hundreds of times of exposure the recorded holograms. The effect can be from two aspects, one is similar to the dynamic design, can take all kinds of tricks of the planar dynamic change pattern, the two is the use of 3D software or with the aid of digital camera, the three-dimensional target of each side and variation process of record, making four dimensional hologram, the hologram can not only recording and reproducing the object in three-dimensional space ( X, Y, Z ) characteristics, and recording and reproducing the three-dimensional objects ( T ) changes with time, it is a kind of high performance security hologram, and ordinary 2D/3D or true three-dimensional holographic photograph is compared, have the following characteristics:

①the enormous amount of information, complex production process: ordinary holographic anti-counterfeiting label often through several exposure can be completed, and the production of four-dimensional hologram to dozens or even hundreds of frames of two-dimensional images were recorded, and exposure times are ordinary holographic dozens or even hundreds of times, the need of special equipment and more sophisticated technology process in order to achieve.

The shooting as no restrictions, expanding the laser holographic method of this one high-tech application scope: ordinary holographic recording three-dimensional model to 1:1 model entity for filming, and four-dimensional holographic first from every angle acquisition object information, and then the acquisition of 2D images are synthesized to make holograms, to shoot the object limit, can be a real, real objects, and even computer configuration of illusory objects. Ratio of 1∶ 1 without.

The true color of four-dimensional display, ordinary holographic logo behind: traditional holographic label can only realize planar layers, 3D hologram can only manifestations of 1:1 still three-dimensional characteristics, and cannot restore object true colors. The four-dimensional holographic is different, in response to true color 3D