Method for achieving anti-counterfeiting technology by combining computer-generated holography and volume holography

Abstract

The invention discloses a method for achieving an anti-counterfeiting technology by combining computer-generated holography and volume holograph. An optical path system, an image generation system anda volume holographic material are arranged. The optical path system comprises a laser, a first half wave plate, a second half wave plate, a first reflector, a second reflector, a polarizing beam splitter, a first space filter, a second space filter, a first collimating mirror, a second collimating mirror and a volume holographic material. The method comprises the steps of: generating two beams ofcoherent light through the optical path system; and recording three-dimensional image interference generated by the image generation system onto the volume holographic material by the two beams of coherent light. Through adoption of the mode of combination of the computer-generated holography and the volume holography, nonexistent three-dimensional real objects are simulated on a digital micro-reflector device through the computational holography and are recorded on a volume holographic material with high diffraction efficiency through adoption of an interference method, so that a more obvious three-dimensional dynamic effect can be formed; and compared with the traditional holographic anti-counterfeiting effect, the anti-counterfeiting effect is enhanced.

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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