What Are Holographic Labels?

HOLOGRAMS MARK In order to provide a level of defense and increase the cost of production, some companies have begun to make holographic marks with the help of laser holographic technology. There is nothing special about the design of such trademarks, they can only be seen through the refraction of light at a certain angle.

Holographic trademark

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HOLOGRAMS MARK In order to provide defense level and increase the cost of production, some companies have begun to use laser holographic technology to make holograms

Note: Holographic display technology (holographic display) does not refer to holography or holography, invented by Dennis Gabor in 1956. It is a next-generation display technology that projects three-dimensional stereoscopic images in three-dimensional space (the images are physically "stereo" rather than purely visual "stereo"). This article is mainly to introduce "holographic photography" technology and its derivative "holographic anti-counterfeiting logo"

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The technology of making and copying holograms is high, requiring specialized personnel, complicated technology and expensive equipment. Holography itself is a high-tech. It not only requires high-quality shock-proof tables, lasers and various optical parts, as well as specialized chemicals. More importantly, it requires professionals with skilled skills and rich experience to operate. In order to make a qualified hologram master. The grating density on the hologram is usually 1000 lines / mm, and the undulation height is a few tenths of a m, so the electroforming process is required to be very particular. It is impossible to talk about such fine gratings by embossing them on plastic films or copying them in large quantities without high-precision, high-quality embossing equipment and hologram copying machines. In addition, the investment in a set of molded holographic production lines is relatively large. Therefore, from the perspective of technology, personnel, craftsmanship, equipment, and investment, the difficulty of making holographic trademarks is greater. Compared with the ordinary printing technology that can also produce products by manual operation with simple equipment, the holographic print avoids the defect that it can be easily copied by humans.

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The characteristics of the hologram itself make it difficult to imitate. Most molded anti-counterfeiting marks are about rainbow holograms of one or more two-dimensional planar patterns. The characteristics of three-dimensional stereo images can be reproduced by using holograms. Two (or more) planar patterns can be recorded in layers on the hologram in the longitudinal direction. In this way, planar images at different depths are reproduced in such a way that they are occluded from each other. Because the rainbow hologram has the property of changing the color of the reproduced image, false color coding technology can be used to reproduce different colors in different patterns or different parts of the same pattern. Because the hologram is a complex grating with extremely high density, even if the same person uses the same pattern in different places, two holograms with the same grating cannot be made, and even different people cannot make it. This difference is most obvious in the differences in the depth and color distribution of the reproduced image. Chiran also includes differences in diffraction efficiency, viewing angle, and signal-to-noise ratio. So even if there is a set of equipment and technology, imitating other people's molding

The above briefly explained the holographic anti-counterfeiting function, but from a philosophical point of view, there is neither an indomitable spear nor an unbreakable shield in the world. Like everything else, there is always such a relationship between anti-counterfeiting and forgery A contradictory relationship. In order to make the holographic printing package have much higher anti-counterfeiting performance than using other printing methods, it is necessary to continuously research and develop new technologies and develop new products in holographic plate making, printing technology, material production and other aspects. Of course, manufacturers who produce holographic anti-counterfeiting signs comply with professional ethics, improve legal awareness, and strengthen management, which is a very important aspect.