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Double-layer triangular and orthogonal mixed distribution ring and sub-ring array electromagnetic shielding light window

An orthogonal hybrid and electromagnetic shielding technology, applied in the direction of magnetic/electric field shielding, electrical components, etc., can solve the problems of low imaging quality, concentrated stray light distribution, etc., to improve electromagnetic shielding effect, strong electromagnetic coupling, and improve electromagnetic shielding efficiency effect

Active Publication Date: 2015-07-29
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] The purpose of the present invention is to overcome the deficiencies of the above-mentioned existing optical window electromagnetic shielding technical solutions, especially for the existence of advanced To solve the problem of relatively concentrated stray light distribution caused by sub-diffraction, a double-layer triangular and orthogonal mixed distribution ring and sub-ring array electromagnetic shielding light window are developed to achieve depth homogenization and extremely low imaging quality for high-order diffraction. The purpose of influence, but also has a good electromagnetic shielding efficiency

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  • Double-layer triangular and orthogonal mixed distribution ring and sub-ring array electromagnetic shielding light window
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  • Double-layer triangular and orthogonal mixed distribution ring and sub-ring array electromagnetic shielding light window

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Embodiment Construction

[0057] The present invention is further described below with reference to accompanying drawing and preferred embodiment:

[0058] Double-layer triangular and orthogonal mixed distribution ring and sub-ring array electromagnetic shielding light window, two layers of metal grids are placed in parallel on both sides of the transparent substrate or substrate of the light window, and the two layers of metal grids have the same unit shape and structural parameters, the two layers of metal grids 3 and 7 are rotated and staggered, and each layer of metal grids is composed of metal rings of the same diameter as the basic rings 10, which are arranged closely in an equilateral triangle and two-dimensional orthogonal mixed arrangement. and loaded on the transparent substrate of the light window or the surface of the substrate; the adjacent basic rings 10 are circumscribed and connected, and the connecting lines between the centers of the adjacent basic rings 10 form equilateral triangles o...

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Abstract

The invention discloses a double-layer triangle and orthogonality mixed distribution tangent circular ring array electromagnetic shielding light window and belongs to the technical field of electromagnetic shielding. The electromagnetic shielding light window is composed of two layers of metallic meshes which are crossly arrayed at two sides of the light window, each layer of metallic mesh is composed of externally tangent connected metallic circular rings through firmly connecting and arranging according to equilateral triangle and two-dimensional orthogonality mixed arrangement, wherein the diameters of the externally tangent connected metallic circular rings are the same, each basic circular ring is provided with an internally tangent connected metallic sub-circular ring, and each basic circular ring and each internally tangent connected metallic sub-circular ring together make up a basic unit of a two-dimensional mesh array structure; the tangentially connected joints of the circular rings are overlapped through lines or are provided with metals which are capable of guaranteeing the reliable electric connection between the annular metal tangent points so as to make sure that all the circular rings are conductive. Through choosing the staggered angle of double layers of meshes, the metallic mesh is capable of obviously lowering the nonuniformity of the senior diffraction intensity distribution of the mesh, and accordingly the stray light caused by diffraction is distributed more uniformly, and the influence on the imaging is less; the electromagnetic shielding efficiency is high through choosing the proper substrate thickness.

Description

technical field [0001] The invention belongs to the field of electromagnetic shielding of optical transparent parts, in particular to a double-layer triangular and orthogonal mixed distribution ring and sub-ring array electromagnetic shielding light window. Background technique [0002] With the widening and increasing intensity of the electromagnetic wave application spectrum, the requirements for electromagnetic shielding light windows used in aerospace equipment, advanced optical instruments, communication equipment, medical diagnostic instruments and security facilities are getting higher and higher, mainly requiring light windows While having a super strong broadband electromagnetic shielding ability, it also has a very high light transmittance, and the less impact on optical imaging, observation, and detection, the better. For example, the optical window of an aircraft in the field of aerospace equipment must achieve high-quality isolation of electromagnetic signals in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05K9/00
Inventor 陆振刚谭久彬林沈
Owner HARBIN INST OF TECH
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