A method for implementing anti-counterfeiting technology combining computational holography and volume holography

Abstract

The invention discloses an anti-counterfeiting technology realization method combining computational holography and volume holography, including an optical path system, an image generation system, and a volume holographic material; the optical path system includes a laser, a first half-wave plate, a second half-wave plate, a first reflection mirror, a second reflection mirror, a polarization beam splitter, a first spatial filter, a second spatial filter, a first collimating mirror, a second collimating mirror, and a volume holographic material; the method includes: generating two beams of coherent light through an optical path system ; Interferentially record the three-dimensional image generated by the image generation system on the volume holographic material through two beams of coherent light. In the present invention, by combining computational holography and volume holography, the non-existing three-dimensional object is simulated on the digital micromirror device through computational holography, and recorded on the volume holographic material with high diffraction efficiency by interference method, which can form a more The obvious three-dimensional dynamic effect enhances the anti-counterfeiting effect compared with the traditional holographic anti-counterfeiting.

Description

technical field [0001] The invention relates to the field of anti-counterfeiting, more specifically, a method for realizing anti-counterfeiting technology combining computational holography and volume holography. 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...

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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