Implementation method of full-color volume holographic anti-counterfeiting technology based on DMD

Abstract

The invention discloses an implementation method of a full-color volume holographic anti-counterfeiting technology based on DMD. The method employs an optical path system, an image generation system and a volume holographic material, and the method comprises the following steps: generating two coherent light beams through an optical path system; and recording a three-dimensional image generated by the image generation system on the volume holographic material through two coherent light beams. According to the invention, the computing holography and the volume holography are combined, so a three-dimensional object which does not exist can be simulated to the DMD through computer holography, and then is recorded on a volume holographic material by adopting an interference method; a volume hologram is generated through three-color laser multiplexing interference, and the generated volume hologram has a wide diffraction band has similar diffraction efficiency for different wavelengths, so that the dispersion problem of volume holography is effectively solved, a more obvious full-color true three-dimensional dynamic effect is realized. Compared with that of the traditional holographic anti-counterfeiting technology, the anti-counterfeiting effect is enhanced. Meanwhile, the imitation difficulty is increased due to the unduplicateability of the volume holographic material.

Description

technical field [0001] The invention relates to the field of anti-counterfeiting, more specifically to a method for realizing the DMD-based full-color volume holographic anti-counterfeiting technology. Background technique [0002] Anti-counterfeiting technology refers to the measures taken to achieve the purpose of anti-counterfeiting. It can accurately identify the authenticity within a certain range and is not easy to be imitated and copied. Anti-counterfeiting is a preventive measure taken against imitation or duplication activities for the purpose of deception without the permission of the owner. Anti-counterfeiting technology products are products made of anti-counterfeiting technology and have anti-counterfeiting functions for the purpose of anti-counterfeiting . [0003] The traditional holographic anti-counterfeiting three-dimensional display effect is not obvious, and it is basically a fake three-dimensional hologram. With the development of science and technology...

AI Technical Summary

Problems solved by technology

[0003] Traditional holographic anti-counterfeit 3D display effect is not obvious, basically fake 3D holographic, with the development of technology, it is becoming more and more easy to be imitated

Volume holographic anti-counterfeiting technology has certain advantages. It can realize true three-dimensional holographic anti-counterfeiting. At the same time, due to its extremely high diffraction efficiency, it can achieve obvious three-dimensional dynamic effects. Object information needs to record objectively existing three-dimensional objects, so it has great limitations

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