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Electromagnetic shielding optical window with double-layer pane metal gridding structure

A technology of metal mesh and electromagnetic shielding, applied in the direction of magnetic/electric field shielding, electrical components, etc., can solve the problems of high light transmittance and strong electromagnetic shielding efficiency of single-layer square metal mesh, so as to improve shielding efficiency , wide shielding band and low cost

Active Publication Date: 2008-07-16
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The purpose of the present invention is to overcome the shortcomings of the above-mentioned existing optical window electromagnetic shielding technical solutions, especially for the problem that the high light transmittance and strong electromagnetic shielding efficiency of the single-layer grid metal grid cannot be taken into account. The electromagnetic shielding optical window with square metal grid structure uses the different influence rules of the double-layer metal grid spacing on its light transmission and shielding properties to select the grid period and double-layer spacing to achieve a basic light transmittance. Without changing the situation, the shielding efficiency is greatly improved

Method used

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  • Electromagnetic shielding optical window with double-layer pane metal gridding structure
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  • Electromagnetic shielding optical window with double-layer pane metal gridding structure

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Embodiment Construction

[0031] The embodiments and drawings of the electromagnetic shielding optical window with a double-layer grid metal grid structure of the present invention are described in detail as follows:

[0032]Figure 1 is a schematic cross-sectional view of a typical preferred structure of an electromagnetic shielding optical window with a double-layer grid metal grid structure of the present invention. 3 and 7 in the figure are single-layer grid metal grid structure layers, their structural parameters are the same, and they are arranged in parallel; 5 in the figure is the optical window transparent material substrate layer, the material can be any transparent material, as long as it can be used as The transparent optical window material that meets the requirements of the use occasion, and the grid metal grids 3 and 7 can be processed on or attached to the surface according to a certain process; 4 in the figure is the connection between the optical window substrate 5 and the grid metal The b...

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Abstract

The invention relates to an electromagnetic shielding optical window with a two-double pane metal grating structure and belongs to the optical transparent piece electromagnetic shielding technical field; the electromagnetic shielding optical window is formed by placing two layers of pane metal gratings or metal silk screens with the same structure parameters on two sides of the optical window or a transparent underlay in parallel; a side length of a pane of the two-double pane metal grating is greater than two times of a side length of a pane of the prior monolayer pane metal grating; the space between two layers of pane metal gratings is two to four times of the side length of the pane; compared with the prior monolayer pane metal grating, the optical window adopting the two-double pane metal grating structure does not reduce light transmittance, substantially improves the shielding efficiency of microwaves and millimeter waves, solves the problems that the high light transmittance and strong electromagnetic shielding efficiency can not simultaneously considered in the prior optical window electromagnetic shielding technology and is suitable for electromagnetic shielding in aerospace equipment, security facilities, medical diagnostic instruments and other military and civil optical transparent pieces.

Description

Technical field [0001] The invention belongs to the field of electromagnetic shielding of optically transparent parts such as medical diagnostic instruments, security facilities, aerospace equipment, etc., and particularly relates to an electromagnetic shielding optical window with a double-layer grid metal grid structure. Background technique [0002] With the wide application of various electronic equipment, the electromagnetic wave application band continues to expand and the intensity continues to increase, and the space electromagnetic environment is becoming more and more complex. More and more clear electromagnetic shielding requirements are put forward for optical windows used in medical diagnostic equipment and other fields, especially requirements. These optical windows have both high transparency and super wide-band electromagnetic shielding performance. For example, the observation window of the shielding room of a medical MRI apparatus needs to be electromagnetically...

Claims

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Application Information

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