CN108207107A - Based on the overlapping annulus grid design method that diameter parameters are random - Google Patents
Based on the overlapping annulus grid design method that diameter parameters are random Download PDFInfo
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- CN108207107A CN108207107A CN201711390631.9A CN201711390631A CN108207107A CN 108207107 A CN108207107 A CN 108207107A CN 201711390631 A CN201711390631 A CN 201711390631A CN 108207107 A CN108207107 A CN 108207107A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
- H05K9/0058—Casings specially adapted for optoelectronic applications
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- Microelectronics & Electronic Packaging (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
Belong to the electromangnetic spectrum field of optical window based on the random overlapping annulus grid design method of diameter parameters, be overlapped annulus grid can random parameter include diameter and cycle parameter, the diameter of annulus is carried out in the symmetrical range centered on initial diameter value random obtaining random grid by the present invention using the random fashion of individually random diameter parameters.This random device can effectively change the diameter value of each annulus unit in grid, and then the structure for being overlapped annulus grid is effectively randomized.Relative to the grid of traditional periodic structure, the random grid with multiple and different diameter circle ring elements can effectively be homogenized the high level diffraction energy of grid, and the distribution for making stray light is more uniform, significantly reduces the influence to image quality.
Description
Technical field
The invention belongs to optical windows to be electromagnetically shielded field, more particularly to a kind of overlapping circular ring net random based on diameter parameters
Grid design method.
Background technology
With the fast development of wireless device, various aspects that electromagnetic wave is widely used in producing and live, space electricity
Magnetic environment also becomes to become increasingly complex, particularly in microwave band and radio wave band.Therefore, the shielding of electromagnetic interference gradually into
For numerous areas urgent problem, such as optical window precision detection, aerospace appts, medical instrument and electronical display
The fields of grade.The electromagnetic shielding of optical window needs the high-permeability for meeting visible ray and infrared band simultaneously and microwave and wireless
The forceful electric power magnetic shield performance of band.In order to solve the problems, such as the electromagnetic shielding of optical window, all multi-methods are suggested in succession, such as ITO
Transparent conductive film, frequency-selective surfaces（FSS）, graphene film, nano-silver thread, metallic mesh etc..With the submillimeter level period
Metallic mesh can pass through wavelength less than the visible ray in its period and the light of infrared band, while mask wavelength more than its period
Microwave and radio wave band electromagnetic wave, optical window electromagnetic shielding field have been widely used.
The periodic structure of traditional period grid structure metallic mesh plays a part of two-dimensional diffraction gratings in optical region, this
So that grid can form integrated distribution spectroscopy diffraction pattern, the high level diffraction of integrated distribution in optical imagery in image planes
Energy can reduce the image quality of optical detection device, influence normally to detect, and the detection of false target can be caused when serious, harm
Greatly.In order to solve the problems, such as grid diffraction characteristic, many different structure grids are suggested.
1. patent CN1889822 " the electromagnetic shielding optical window with annulus metallic mesh structure " is described outside with annulus
The metallic mesh unit of shape forms metallic mesh array by the secret cloth that runs in of two-dimensional quadrature arrangement mode, which is conducive to optics
The raising of imaging system images quality after window.
2. patent CN101222839 " a kind of electromagnetic shielding optical window with double-layer circular ring metallic mesh structure " is described
It is a kind of that the electromagnetic shielding optical window that optical window both sides form is loaded on by two layers of annulus metallic mesh, solve high light transmittance and forceful electric power
The problem of electromagnetic shielding performance can be taken into account simultaneously.
3. patent CN2233113 " no Moire fringe electromagnetic shielding observation window " is used and is put down by the different metal mesh of two number of layers
Row is placed, and there are certain angles for their warps or weft, overcome Moire fringe phenomenon so as to reach, and realizes clearer regard
It is wild.
4. patent CN103763907A " is distributed the electromagnetic shielding of tangent annulus and the sub- circle ring array of inscribe based on two-dimensional quadrature
The metallic mesh structure that optical window " describes basic annulus by being distributed by two-dimensional quadrature and its inscribe subring is formed, the structure
The depth optimization of the high level diffraction energy of grid can be achieved.
5. " electromagnetic screen based on the tangent annulus of angular distribution and the sub- circle ring array of inscribe is opacus by patent CN103763901A
Window " describes a kind of metal ring containing inscribe subring structure for loading on optical window transparent substrate surface by equilateral triangle
The grid array that arrangement contiguity is formed, which can significantly reduce the inhomogeneities of the high level diffraction intensity distribution of grid, right
Imaging smaller.
6. patent CN103763896A " the electromagnetic shielding optical window of double-layer staggered multicycle metal ring nested array " is described
A kind of electromagnetic shielding optical window being made of two layers of staggered metallic mesh significantly reduces the distribution of grid diffraction intensity
Inhomogeneities reduces the influence to imaging.
7. patent CN102723126A " a kind of patterned transparent conductive film based on random grid " describes one kind and leads
The transparent conductive film that electric region is made of random grid in irregular shape, advantage are that Moire fringe will not be generated.
8. patent CN102902856A " random grid design method, conductive film and its making sides of metal mesh conductive film
Method " describes the random grid that a kind of periodical grid generation irregular polygon being made of regular figure forms, and avoids not
The generation of your striped and elimination transmitance difference.
9. patent CN104950365A " a kind of optical clear frequency-selective surfaces structure and production method " describes one kind
Frequency selection based on stochastic crack mask shows structure, and advantage, which is can to avoid to reduce translucency due to metal line width increases, asks
It inscribes and can realize the purpose for being homogenized high level diffraction energy.
Patent 1-6 proposes the periodic structure grid based on annulus unit, and the structure of annulus unit is improving optical diffraction
Better than traditional grid structure grid in terms of characteristic, it can preferably improve the situation of energy integrated distribution.But in patent 1-6
Grid structure is respectively provided with periodicity, and periodic structure metallic mesh is because of its intrinsic periodical high level diffraction energy in optical region
Amount distribution is more concentrated, and reduces the image quality of optical region.In patent 7-9, it is proposed that the design method of random grid,
Generate the polygonal mesh structure of random distribution, but compared to polygonized structure, circular ring structure because of the symmetry of its own,
Advantage is had more in terms of being homogenized the high level diffraction energy of grid.Present invention incorporates annulus thoughts and random thought to propose based on straight
The overlapping annulus grid design method of diameter stochastic parameter, the overlapping annulus grid based on this random device can effectively be homogenized grid
High level diffraction energy, random device reached the high level diffraction energy of homogenizing by changing the diameter of annulus unit in grid
Purpose, high level diffraction energy influences to significantly reduce caused by image quality, and the height of optical region can be achieved at the same time in grid
The forceful electric power magnetic shield performance of permeability and microwave band.
Invention content
The object of the present invention is to provide a kind of overlapping annulus grid design method random based on diameter parameters, to change
The problem of high level diffraction energy integrated distribution of kind tradition periodic structure metallic mesh, the low imaging of high transparency can be reached simultaneously
Quality influences and forceful electric power magnetic shield performance.
To achieve the above object, the present invention provides following technical solution：
Idea of the invention is that with reference to circular ring structure and two kinds of thoughts of random structure, it is proposed that based on the overlapping that diameter parameters are random
Annulus grid design method so as to achieve the purpose that be homogenized the high level diffraction energy of grid, while ensures that grid has high light transmission
Property with forceful electric power magnetic shield performance.
A kind of overlapping annulus grid design method random based on diameter parameters, it is characterised in that the grid is by annulus unit
Form, periodic array arrangement overlapping annulus grid on the basis of be randomized to obtain, grid can random parameter include
Diameter 2RWith the periodg。
The overlapping annulus grid design method random based on diameter parameters according to claim 1, it is characterised in that
By each diameter of a circle parameter 2RIn initial diameter parameter 2R 0Symmetrical range [2R 0-ΔR,2R 0+ΔR] be randomized.
The overlapping annulus grid design method random based on diameter parameters according to claim 1, it is characterised in that
The period of gridgWith diameter 2RRatiog/2RMore than 1.
The overlapping annulus grid design method random based on diameter parameters according to claim 1, it is characterised in that
The random fashion of grid is individually random diameter 2RParameter.
The overlapping annulus grid design method random based on diameter parameters according to claim 1, it is characterised in that
Diameter 2RRandom range can be by changing ΔRSize adjust.
The overlapping annulus grid design method random based on diameter parameters according to claim 1, it is characterised in that
Diameter 2RRandom fashion to be uniformly distributed.
The present invention has following novelty and remarkable result：
The present invention proposes a kind of overlapping annulus grid design method random based on diameter parameters, this random device can will be overlapped
The diameter parameters of annulus grid are effectively randomized, and then generate the overlapping circular ring net with multiple and different diameter circle ring elements
Grid, and ensure to be electrically connected between each adjacent rings of grid by reasonably controlling the random range of grid parameter and diameter.
The present invention proposes a kind of overlapping annulus grid design method random based on diameter parameters, compared to traditional week
Phase structure grid, the overlapping annulus grid based on the random overlapping annulus grid design method of diameter parameters can effectively be homogenized collection
The high level diffraction energy of middle distribution, reduces the influence to image quality, and can realize high transparency and forceful electric power magnetic screen simultaneously
Efficiency.Each annulus unit of the overlapping annulus grid of random structure has different diameters, and it is advanced to improve grid in principle
The integrated distribution problem of secondary diffraction energy.
Description of the drawings
Fig. 1 is the structure diagram of random overlapping circular ring structure metallic mesh of the present invention.
Fig. 2 is the diameter 2 of random overlapping circular ring structure metallic mesh of the present inventionRRandom device schematic diagram.
Fig. 3 is the diameter 2 of random overlapping circular ring structure metallic mesh of the present inventionRGrid structural representation after random
Figure.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, detailed retouch is carried out to the technical solution in the embodiment of the present invention
It states.
In the present embodiment, random overlapping circular ring net grid cyclegIt remains unchanged, individually to the diameter of grid 2RIt carries out random
Change.The initial parameter of periodic structure overlapping annulus grid is the periodg 0=400 μm, diameter 2R 0=600μm.The diameter 2 of gridRWith
Machine range is designed as 35%.Circle diameter is [2R 0-ΔR,2R 0+ΔR] in carry out it is random, by adjusting ΔRSize change
Diameter 2RRandom range.
Claims (6)
1. a kind of overlapping annulus grid design method random based on diameter parameters, it is characterised in that the grid is by annulus unit structure
Into, be randomized to obtain on the basis of the overlapping annulus grid of periodic array arrangement, grid can random parameter include it is straight
Diameter 2RWith the periodg。
2. the overlapping annulus grid design method random based on diameter parameters according to claim 1, it is characterised in that will
Each diameter of a circle parameter 2RIn initial diameter parameter 2R 0Symmetrical range [2R 0-ΔR,2R 0+ΔR] be randomized.
3. the overlapping annulus grid design method random based on diameter parameters according to claim 1, it is characterised in that be
Ensure the electrical connection between adjacent rings, the period of gridgWith diameter 2RRatiog/2RMore than 1.
4. the overlapping annulus grid design method random based on diameter parameters according to claim 1, it is characterised in that net
The random fashion of grid is individually random diameter 2RParameter.
5. the overlapping annulus grid design method random based on diameter parameters according to claim 1, it is characterised in that week
PhasegRandom range can be adjusted by changing the size of fixed area, the range of fixed area need to be less than the area of annulus unit
Domain range.
6. the overlapping annulus grid design method random based on diameter parameters according to claim 1, it is characterised in that straight
Diameter 2RRandom fashion to be uniformly distributed.
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| CN201711390631.9A CN108207107A (en) | 2017-12-21 | 2017-12-21 | Based on the overlapping annulus grid design method that diameter parameters are random |
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| CN201711390631.9A CN108207107A (en) | 2017-12-21 | 2017-12-21 | Based on the overlapping annulus grid design method that diameter parameters are random |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108899636A (en) * | 2018-06-28 | 2018-11-27 | 山西大学 | A kind of low section compact wideband antenna based on the double-deck super surface |
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|---|---|---|---|---|
| JP2000114773A (en) * | 1998-10-08 | 2000-04-21 | Nippon Sheet Glass Co Ltd | Electromagnetic wave shielding filter and plasma display front-surface plate |
| CN101059576A (en) * | 2007-04-24 | 2007-10-24 | 浙江大学 | Binary photon sieve |
| US20100180428A1 (en) * | 2008-12-16 | 2010-07-22 | Jones Michael I | Randomized circular grids for low-scatter EM shield |
| CN103547956A (en) * | 2011-04-20 | 2014-01-29 | 惠普发展公司，有限责任合伙企业 | Sub-wavelength grating-based optical elements |
| CN104834040A (en) * | 2015-05-21 | 2015-08-12 | 哈尔滨工业大学 | Metal mesh frequency selection surface structure and manufacturing method |
| CN104950365A (en) * | 2015-05-21 | 2015-09-30 | 哈尔滨工业大学 | Optical transparent frequency selecting surface structure and manufacturing method |
-
2017
- 2017-12-21 CN CN201711390631.9A patent/CN108207107A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000114773A (en) * | 1998-10-08 | 2000-04-21 | Nippon Sheet Glass Co Ltd | Electromagnetic wave shielding filter and plasma display front-surface plate |
| CN101059576A (en) * | 2007-04-24 | 2007-10-24 | 浙江大学 | Binary photon sieve |
| US20100180428A1 (en) * | 2008-12-16 | 2010-07-22 | Jones Michael I | Randomized circular grids for low-scatter EM shield |
| CN103547956A (en) * | 2011-04-20 | 2014-01-29 | 惠普发展公司，有限责任合伙企业 | Sub-wavelength grating-based optical elements |
| CN104834040A (en) * | 2015-05-21 | 2015-08-12 | 哈尔滨工业大学 | Metal mesh frequency selection surface structure and manufacturing method |
| CN104950365A (en) * | 2015-05-21 | 2015-09-30 | 哈尔滨工业大学 | Optical transparent frequency selecting surface structure and manufacturing method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108899636A (en) * | 2018-06-28 | 2018-11-27 | 山西大学 | A kind of low section compact wideband antenna based on the double-deck super surface |
| CN108899636B (en) * | 2018-06-28 | 2020-02-14 | 山西大学 | Low-profile small broadband antenna based on double-layer super surface |
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