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Diameter parameter randomization-based overlapping ring grid designing method

A design method and random method technology, applied in the direction of electrical components, magnetic field/electric field shielding, etc., can solve the problems of strong electromagnetic shielding performance, low imaging quality impact, high light transmittance, etc., to improve the concentration distribution problem, high light transmittance Efficiency and strong electromagnetic shielding efficiency, the effect of reducing the impact

Inactive Publication Date: 2018-06-26
HARBIN INST OF TECH
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Problems solved by technology

[0014] The purpose of the present invention is to provide a design method of overlapping ring grids based on random diameter parameters to improve the problem of concentrated distribution of high-order diffraction energy in traditional periodic structure metal grids, and to achieve high light transmittance and low imaging quality at the same time Influence and strong electromagnetic shielding performance

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  • Diameter parameter randomization-based overlapping ring grid designing method
  • Diameter parameter randomization-based overlapping ring grid designing method
  • Diameter parameter randomization-based overlapping ring grid designing method

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Embodiment Construction

[0029] The technical solutions in the embodiments of the present invention will be described in detail below in conjunction with the drawings in the embodiments of the present invention.

[0030] In this embodiment, randomly overlapping ring grid periods g remain the same, alone for the diameter of the grid 2 R Randomize. The initial parameter of periodic structure overlapping ring grid is period g 0 =400μm, diameter 2 R 0 =600μm. The diameter of the grid 2 R The random range of is designed to be 35%. Ring diameter in [2 R 0 -Δ R ,2 R 0 +Δ R ] within random, by adjusting Δ R to change the size of the diameter to 2 R random range of .

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Abstract

The invention discloses a diameter parameter randomization-based overlapping ring grid designing method belonging to the technical field of electromagnetic shielding of optical windows. The randomizedparameters of an overlapping ring grid include diameter and period parameters; and the diameters of rings are randomized within a symmetric range of employing an initial diameter value as the centerto obtain the randomized grid by adopting a randomization mode of individually randomizing the diameter parameter. According to the randomization method, the diameter values of various ring units in the grid can be effectively changed, so that the structure of the overlapping ring grid is effectively randomized. Compared with a traditional grid of a periodic structure, high-level diffraction energy of the grid can be effectively homogenized through the randomized grid with a plurality of ring units of different diameters, distribution of stray light is more uniform and the influence on the imaging quality is significantly reduced.

Description

technical field [0001] The invention belongs to the field of electromagnetic shielding of optical windows, in particular to a design method for overlapping ring grids based on random diameter parameters. Background technique [0002] With the rapid development of wireless devices, electromagnetic waves are widely used in all aspects of production and life, and the space electromagnetic environment is becoming more and more complex, especially in the microwave and radio bands. Therefore, the shielding of electromagnetic interference has gradually become an urgent problem in many fields, such as the precision detection of optical windows, aerospace devices, medical devices, and electronic displays. The electromagnetic shielding of the optical window needs to meet the high transmittance of visible light and infrared bands and the strong electromagnetic shielding performance of microwave and radio bands at the same time. In order to solve the electromagnetic shielding problem o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K9/00
CPCH05K9/0058
Inventor 刘永猛左翠莲谭久彬
Owner HARBIN INST OF TECH
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