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Strong electromagnetic shielding optical window based on graphene/dual-layer metal mesh laminated structure

A double-layer metal, laminated structure technology, applied in the fields of magnetic field/electric field shielding, metal layered products, glass/slag layered products, etc., can solve the problem of high light transmittance and strong microwave shielding efficiency, transparency and conductivity. Mutual constraints on shielding capabilities, electromagnetic leakage of reflected electromagnetic signals, etc., to achieve the effects of light transmission characteristics, microwave shielding efficiency and reflectivity improvement, and low electromagnetic reflection

Active Publication Date: 2017-02-15
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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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 problem of electromagnetic leakage and secondary pollution caused by signals, a strong electromagnetic shielding light window based on graphene / 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

Method used

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  • Strong electromagnetic shielding optical window based on graphene/dual-layer metal mesh laminated structure
  • Strong electromagnetic shielding optical window based on graphene/dual-layer metal mesh laminated structure
  • Strong electromagnetic shielding optical window based on graphene/dual-layer metal mesh laminated structure

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Embodiment

[0044] The electromagnetic shielding light window is composed of a transparent absorption layer 3, a transparent medium A4, a metal grid A5, a transparent medium B6 and a metal grid B7 that are sequentially overlapped and arranged in parallel; the transparent absorption layer 3 is composed of a single layer arranged in parallel in sequence The graphene film A10, the transparent medium C11 and the single-layer graphene film B12 are composed, and the metal grid A5 and the metal grid B7 arranged in parallel form a transparent reflective layer.

[0045] The technical effect of the present invention is: when the shielding efficiency of the double-layer metal grid is 29.8dB, the electromagnetic shielding efficiency of the present invention is 33.4dB, and the absorption loss accounts for 60.1% of the total shielding energy, realizing a strong electromagnetic shielding based on absorption , and the light transmittance is 90.4%, still has high light transmittance characteristics. Using...

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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 graphene / double-layer metal grid laminated structure. 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 measure to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K9/00B32B9/04B32B15/04B32B15/08B32B17/06B32B3/12B32B33/00
Inventor 陆振刚谭久彬马栎敏
Owner HARBIN INST OF TECH
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