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Wide-spectrum electromagnetic shielding light window

An electromagnetic shielding, wide-spectrum technology, applied in the fields of magnetic field/electric field shielding, electrical components, etc., can solve the problems of poor heat resistance, inability to use shielding, etc., and achieve the effect of increased electromagnetic wave range, high firmness, and clear imaging.

Active Publication Date: 2014-03-26
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such particles cannot be used for shielding of light windows, and the organic film containing particles has poor wear resistance and heat resistance, so it is not suitable for use in harsh environments

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The shape of the metal mesh grid is a square grid, such as Figure 4 shown.

[0036] The material of the metal grid 2 is metal copper, and the material of the metal grid 3 is metal nickel.

[0037] The metal wire thickness of the metal grid 2 is 2 μm, and the metal wire thickness of the metal grid 3 is 3 μm.

[0038] The metal line widths of the metal grid 2 and the metal grid 3 are both 10 μm.

[0039] The period of the metal grid 2 is 500 μm.

[0040] There is no protective layer on the surface of the metal grid.

[0041] In this embodiment, the shielding effect on the electromagnetic wave of 10 MHz-18 GHz reaches an average effect of ~20 dB.

Embodiment 2

[0043] The structure of the metal grid is a square grid, such as Figure 4 As shown, different from Embodiment 1, the positions of the first metal grid 2 and the second metal grid 3 are exchanged, as figure 2 Shown, all the other parameters are with embodiment 1. The average shielding of metal grids to 10MHz-18GHz electromagnetic waves is about 20dB.

Embodiment 3

[0045] The structure of the metal grid is circular, such as Figure 5 As shown, and there is a layer of protective layer 4 on the surface of the optical window matrix material, such as image 3 Shown, all the other parameters are with embodiment 1. The average shielding of the metal grid to 10MHz-18GHz electromagnetic waves is about 22dB.

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Abstract

A wide-spectrum electromagnetic shielding light window comprises a host material, a first metal mesh and a second metal mesh, and is characterized in that the first metal mesh and the second metal mesh are metal meshes with periodic structures, and are inlaid in the host material of the light window. The wide-spectrum electromagnetic shielding light window has the advantages that high-frequency electromagnetic waves and low-frequency electromagnetic waves are simultaneously shielded, wide-spectrum electromagnetic shielding is realized, the electromagnetic shielding efficiency is high, and the light window is wear-resistant and heat-resistant. Moreover, the wide-spectrum electromagnetic shielding light window is applicable to wide-spectrum electromagnetic shielding in the fields of remote sensing and telemetry, medical diagnosis, secure communication and space flight and aviation.

Description

technical field [0001] The invention relates to electromagnetic shielding, in particular to a wide-spectrum electromagnetic shielding light window. Background technique [0002] With the increasingly complex electromagnetic environment in space, there are serious electromagnetic interference problems in optical windows in the fields of telemetry and remote sensing, medical diagnosis, secure communication, aerospace equipment, etc., not only from external electromagnetic wave signals such as cosmic rays, satellite communications, and TV broadcasting Interference with the internal working devices of the system will also cause internal electromagnetic signals to leak to the outside of the system and affect the outside world. Due to the transparency of the optical window to electromagnetic waves, it will become one of the important factors for the exposure of fighter jets in military applications. With the improvement of modern military requirements, the wear resistance and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K9/00
Inventor 张龙居永凤姜雄伟袁新强
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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