Electromagnetic shielding optical window based on multicycle master-slave nested circular ring orthogonal array

Abstract

The invention provides an electromagnetic shielding optical window based on a multicycle master-slave nested circular ring orthogonal array, and belongs to the technical field of electromagnetic shielding. The electromagnetic shielding optical window is characterized in that metal meshes of the multicycle master-slave nested circular ring array are formed by basic circular rings, sub circular rings, secondary sub circular rings, filling circular rings, modulated circular rings and modulated sub circular rings, wherein the basic circular rings form a two-dimensional orthogonal externally-tangent communicated array, the modulated circular rings form a two-dimensional orthogonal separation array, the modulated circular rings and the basic rings are communicated in an externally-tangent mode, the sub circular rings and the filling circular rings which are communicated with the basic circular rings in an internally-tangent mode are arranged in the basic circular rings, the secondary sub circular rings which are communicated with the sub circular rings in an internally-tangent mode are arranged in the sub circular rings, and the modulated sub circular rings which are communicated with the modulated circular rings in an internally-tangent mode are arranged in the modulated circular rings. It is guaranteed that all the circular rings are mutually conductive by overlapping lines or arranging metal which guarantees reliable electrical connection between metal ring points of tangency at joints where the circular rings are tangently communicated. Through the metal mesh structure, distribution unevenness of high-level diffraction light intensity of the meshes can be remarkably reduced, stray light caused by diffraction is more evenly distributed, and the influence on imaging is smaller.

Description

technical field [0001] The invention belongs to the field of electromagnetic shielding of optical transparent parts, in particular to an electromagnetic shielding light window based on a multi-period master-slave nested circular ring orthogonal array. 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 inside a...

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 In order to solve the problem of relatively concentrated stray light distribution caused by sub-diffraction, an electromagnetic shielding light window based on a multi-period master-slave nested circular ring orthogonal array was developed to achieve depth homogenization of high-order diffraction and extremely low impact on imaging quality. Purpose

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