Electromagnetic shielding optical window based on triangularly-distributed tangent circular ring and internally-tangent sub circular ring array

An electromagnetic shielding and triangular distribution 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., and achieve the effect of improving electromagnetic shielding effect and improving uniformity

CN103763901AActive Publication Date: 2014-04-30HARBIN INST OF TECH
11 Cites 8 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2014-04-30

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides an electromagnetic shielding optical window based on a triangularly-distributed tangent circular ring and internally-tangent sub circular ring array, and belongs to the technical field of electromagnetic shielding. Metal circular rings with the same diameter are ranked and tightly connected in an equilateral triangle mode to form a mesh array, the mesh array is loaded to the surface of a transparent substrate of the optical window, every two adjacent circular rings are communicated in an externally-tangent mode, a sub circular ring which is communicated with each circular ring in an internally-tangent mode is arranged in each circular ring, the circular rings are used as basic circular rings, and the basic circular rings and the sub circular rings which are communicated with the circular rings in the internally-tangent mode jointly form basic units of a two-dimensional metal mesh array structure. It is guaranteed that all the circular rings are mutually communicated and conductive by overlapping lines or arranging metal which guarantees reliable electrical connection between metal ring points of tangency at joints of every two adjacent basic circular rings and joints of the basic circular rings and the sub circular rings which are communicated with the circular rings in the internally-tangent mode. Through the metal mesh structure, distribution unevenness of high-level diffraction light intensity of meshes can be remarkably reduced, stray light caused by diffraction is more evenly distributed, and the influence on imaging is smaller.
Need to check novelty before this filing date? Find Prior Art

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 triangular distribution of tangent rings and inscribed sub-ring arrays. 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 ins...

Examples

Embodiment Construction

[0055] The present invention will be further described below in conjunction with accompanying drawing and preferred embodiment:

[0056]The electromagnetic shielding light window based on triangular distribution of tangent rings and inscribed sub-ring arrays, the metal grid 5 in the electromagnetic shielding light window is composed of metal rings of the same diameter as the basic rings 6 arranged in an equilateral triangle and closely connected. A two-dimensional grid array, and the adjacent basic rings 6 are circumscribed and connected; each basic ring 6 is provided with a metal sub-ring 7 that is inscribed with it, and the basic ring 6 is inscribed with it. The sub-rings 7 together constitute the basic unit of the two-dimensional grid array structure; the diameters of the sub-rings 7 of the basic ring 6 and its inscribed communication are millimeters and submillimeters, and the basic rings 6 The metal line width of the sub-ring 7 connected with it inscribed is micron and su...