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Electromagnetic screening optical window with circular ring metal meshed gate structure

A metal mesh grid, electromagnetic shielding technology, applied in the direction of magnetic/electric field shielding, electrical components, etc., can solve the problems of high-pass optical capability and shielding capability, difficulty, etc., to achieve insensitivity to electromagnetic wave polarization, reduced diffraction energy ratio, Evenly distributed effect

Inactive Publication Date: 2007-01-03
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The traditional square metal grid structure is composed of two-dimensional orthogonal metal scribe lines to form a periodic unit, but there is an inherent contradiction between the light transmission and shielding properties of this square grid, and it is difficult to have high light transmission and shielding properties at the same time. Although the shielding ability is superior to other technical solutions, it cannot fully meet the actual needs under the condition that the requirements for electromagnetic shielding and light transmission ability are continuously improved.

Method used

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  • Electromagnetic screening optical window with circular ring metal meshed gate structure
  • Electromagnetic screening optical window with circular ring metal meshed gate structure
  • Electromagnetic screening optical window with circular ring metal meshed gate structure

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Embodiment Construction

[0031] The rings of the present invention are made of metals or alloys with good electrical conductivity and have a certain thickness. The rings are distributed in a two-dimensional orthogonal arrangement. Adjacent rings cover a suitable area of ​​metal at the tangent point to ensure that all rings Both are on. The grid layer can be firmly connected with the transparent substrate of the optical window through chrome or titanium as an adhesive layer; the optical window with the grid layer can be coated with an anti-reflection coating on one side or both sides to increase the light transmittance; the grid layer The surface can be coated with a protective film to prevent scratches, and at the same time prevent the metal from being corroded or oxidized and reduce the shielding ability. Compared with the traditional square metal grid, the new optical window using the ring metal grid can effectively improve the light transmission ability and microwave shielding ability at the same t...

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Abstract

An electromagnetic shielded optical window with ring type of metal cross hatch pattern structure is prepared as arranging ring type of metal cross hatch pattern units in two-dimensional orthogonal mode to from cross hatch pattern array then loading formed array on transparent substrate surface of optical window. The prepared product can be used to carry out electromagnetic shielding in medical treatment and aerospace cause.

Description

technical field [0001] The invention belongs to the field of electromagnetic shielding of optically transparent parts such as communication equipment, medical diagnostic instruments, security facilities and aerospace equipment, and particularly relates to an electromagnetic shielding optical window with a circular metal grid structure. Background technique [0002] With the wide application of various electronic devices, many occasions where optical windows are used require optical windows to have high transparency and strong broadband electromagnetic shielding capabilities. For example, the optical windows of aircraft must be electromagnetically shielded to prevent harmful electromagnetic waves. Signal entry causes failure of electronic equipment in the cabin, and prevents important information such as communication, operation, and data in the cabin from penetrating through the optical window in the form of electromagnetic radiation to cause electromagnetic leakage; the opti...

Claims

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Application Information

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IPC IPC(8): H05K9/00
Inventor 谭久彬陆振刚刘俭
Owner HARBIN INST OF TECH
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