Strong electromagnetic shielding light window based on graphene and double-layer metal grid laminated structure

Abstract

A strong electromagnetic shielding optical window based on a graphene / dual-layer metal mesh laminated structure belongs to the optical transparent member electromagnetic shielding technology field. The core devices of the electromagnetic shielding optical window are graphene films and metal meshes A and B, the mutually parallelly configured metal meshes A and B are used as the transparent reflection layers, and 1-6 layers of graphene films separated by the transparent mediums are used as the transparent absorption layers, thereby forming a multilayer structure. By the structure, the radio frequency radiation can penetrate the absorption layers repeatedly to be absorbed strongly, the strong microwave absorption characteristic is realized, and the visible light has a high light transmission rate by transmitting the multilayer structure once. The strong electromagnetic shielding optical window based on the graphene / dual-layer metal mesh laminated structure solves the problem that a conventional transparent electromagnetic shielding method can not consider the low-electromagnetic reflection, the strong electromagnetic shielding and the high light transmission simultaneously, and has the characteristics of high light transmission, strong electromagnetic shielding and low electromagnetic reflection.

Description

technical field [0001] The invention belongs to the field of electromagnetic shielding of optically transparent parts, in particular to a strong electromagnetic shielding light window based on a laminated structure of graphene and double-layer metal grids. Background technique [0002] With the development of radio, television, wireless communication technology and microwave technology, a large number of radio frequency devices are equipped in various places of human activities, and the spectrum range continues to widen, and the intensity doubles, which not only interferes with electronic equipment, but also affects human health. threaten. This invisible and intangible "electromagnetic pollution" directly acts on machines or human bodies, and is a serious "invisible killer". It has become the fifth largest pollution after air pollution, water pollution, solid waste pollution and noise pollution. Electromagnetic shielding (including absorption and reflection) is the main mea...

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Problems solved by technology

[0020] The purpose of the present invention is to overcome the deficiencies of the above-mentioned existing transparent electromagnetic shielding technology, especially for the mutual restriction of transparency and conductive shielding ability in the existing reflective transparent shielding technology, it is difficult to take into account high light transmittance and strong microwave shielding efficiency, and reflective electromagnetic shielding technology To solve the problems of electromagnetic leakage and secondary pollution caused by signals, a strong electromagnetic shielding light window based on graphene and double-layer metal grid laminated structure has been developed to achieve the purpose of having high light transmission, strong electromagnetic shielding and low electromagnetic reflection performance at the same time

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