CN108808259A - A kind of novel high-altitude invisible structure - Google Patents
A kind of novel high-altitude invisible structure Download PDFInfo
- Publication number
- CN108808259A CN108808259A CN201810522451.XA CN201810522451A CN108808259A CN 108808259 A CN108808259 A CN 108808259A CN 201810522451 A CN201810522451 A CN 201810522451A CN 108808259 A CN108808259 A CN 108808259A
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- altitude
- plank
- invisible
- novel high
- metal plank
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/02—Refracting or diffracting devices, e.g. lens, prism
Abstract
The invention discloses a kind of novel high-altitude invisible structures.The present invention is made of the equal parallel metal sheet in multiple intervals.All metal planks all are the same size.The length of metal plank is the integral multiple of operation wavelength；There are the air sections of a rectangle for the centre for the shell-like structure that metal plank surrounds, for placing the object being hidden.The body form and material being hidden can arbitrarily be chosen.When work, stealthy shell-like structure is located at high altitude location.When extraneous observer is located at the position of the following distance of stealthy shell-like structure, the object placed in total and rectangular area is to extraneous invisible.It is convenient that the present invention realizes, can effectively be worked with wide angle.Observer can not discover when being disposed below any position observation.
Description
Technical field
The invention belongs to novel high-altitude stealth techniques, are a kind of stealthy shell-like structures positioned at high-altitude.
Background technology
Electromagnetism stealth is the dream of the mankind from ancient times to the present, all occurred the stealthy of different modes in many science fictions and sets
Think.Here the stealth that we say refers to the stealth to human eye, is not the suction wave technology currently used for stealth aircraft.2006
Year, after transform optics theory proposes, start research boom of the people to the stealthy shell of naked eyes【1】.By means of transform optics
Method can design a kind of shelly-shaped invisible structure by coordinate transform：When optics enters in this kind of shelly-shaped invisible structure,
It can be smoothly directed around the section to be hidden, then can be vectored back to its original path again continues to propagate.From last
Just look like space present in the structure it is that free space is the same from the point of view of the ray trajectory of outgoing.Since light is guided to bypass
The region being hidden, thus light without and the object that is hidden contact, so do not generate any scattering, and then the external world can not
Detect the object being hidden.However, the contact clothing parameter originally designed by means of transform optics is extremely complex, it is related to
Anisotropic non-homogeneous impedance matching medium so that perfect contact clothing still cannot achieve.However pass through a degree of
After simplification, people realize the contact clothing after simplifying in microwave section, can be played centainly to hiding object
Degree scatters reduced effect【2】.In this experiment, contact clothing is realized by means of metamaterial unit.Although this
Contact clothing can effectively work to any incident angle degree, but different location using the cellular construction of different parameters come approximate satisfaction
The heterogeneous anisotropic media of theory calls so that the design entirely tested is extremely complex.
Then, people design to obtain by means of sacrificing the methods of the direction that can effectively work by means of transform optics
The contact clothing that can be experimentally directly realized by.2013, the Chen Hong of Zhejiang University victory team be exactly by means of sacrifice operative orientation,
It sacrifices simultaneously in the case of keeping equiphase surface undistorted, realizes the stealth in 6 discrete directions of visible light wave range【3】.
The same year, Smith team realize unidirectional perfect contact clothing also by way of transform optics in microwave section【4】.Both are stealthy
Shell is realized relative to initial omnidirectional contact clothing【2】It is relatively simple, but can only be to 1 or several discrete sides
To work.Currently, still can be effective to continuous broad-angle-incident without one kind, stealth easy to implement simple in structure
Clothing.
【1】Pendry,J.B.,Schurig,D.,&Smith,D.R.Controlling electromagnetic
fields.Science,312(5781),1780-1782(2006).
【2】Schurig,D.et al.Metamaterial electromagnetic cloak at microwave
frequencies.Science 314,977–980(2006).
【3】Chen,H.,Zheng,B.,Shen,L.,Wang,H.,Zhang,X.,Zheludev,N.I.,&Zhang,
B.Ray-optics cloaking devices for large objects in incoherent natural
light.Nat.Commun.4,2652(2013).
【4】Landy,N.,&Smith,D.R.A full-parameter unidirectional metamaterial
cloak for microwaves.Nat.Mater.12(1),25(2013).
Invention content
The purpose of the present invention is to solve the existing contact clothing complicated technology realization either limited problem of operative orientation,
And provide a kind of novel high-altitude invisible structure.
It is of the present invention solve the problems, such as used by technical solution it is as follows：
The present invention is a shell-like structure, is formed by multiple layer metal plank is arranged in parallel, the interval of adjacent metal plank
It is equal；The length of metal plank is the integral multiple of operation wavelength, and the spacing between the width and plank of metal plank is identical.
The length and operation wavelength relationship of the metal plank are as follows：
L=m λ0, wherein L is metal plank length, and m is arbitrary positive integer, λ0Operation wavelength, the width of metal plank and
Spacing between plank is identical, and the interval of metal plank is mutually less than operation wavelength.
For shell-like structure of the present invention in addition to multiple layer metal plank, other regions are air.
The metal plank orientation of the first and third quadrant is along -45 degree directions, in second, four-quadrant in the present invention
The orientation of metal plank is along+45 degree directions.
The centre of structure of the invention is the air section of a rectangle, for placing the object being hidden.And intermediate rectangular
Air section can place arbitrary shape any materials be hidden object.
When work, invisible structure is located at high altitude location, when extraneous observer is located at the lower position of invisible structure,
The object placed in total and rectangular area is to extraneous invisible.
Beneficial effects of the present invention are as follows：
The present invention implements very easy, it is only necessary to can be realized by means of metallic plate arrangement.
The present invention can effectively be worked with wide angle.Observer can not discover when being disposed below any position observation.
The new spatial microwave power synthetic technology of the present invention, it is excellent with high power combined coefficient and high system stability
Point, while may be implemented to obtain the effect of power combing at the arbitrary spatial position other than device, it does not need to be limited to
The spatial position that the interference of distance microwave source is mutually grown.A rectangular air region is surrounded among metal plank.In the rectangular area
It can place and need hiding object.The shape and material of object are unrestricted.
Description of the drawings
Fig. 1 is the structure chart of device.
Fig. 2 implements illustration.
Specific implementation mode
In order to enable the auditor especially public of Patent Office that the technical spirit of the present invention is more clearly understood and have
Beneficial effect, applicant will elaborate by way of examples below, but be not to this hair to the description of embodiment
The limitation of bright scheme, the made only formal but not substantive equivalent transformation of any design according to the present invention are all answered
It is considered as technical scheme of the present invention scope.
As illustrated in fig. 1 and 2, the present invention is a shell-like structure, is made of the equal parallel metal sheet in multiple intervals.It is all
Metal plank all is the same size.The length of metal plank is the integral multiple of operation wavelength, and relationship is as follows：
L=m λ0, wherein L is metal plank length, and m is arbitrary positive integer, λ0Operation wavelength, the width of metal plank and
Spacing between plank is identical.
There are the air sections of a rectangle for the centre for the shell-like structure that metal plank surrounds, for placing the object being hidden
Body.The body form and material being hidden can arbitrarily be chosen.When work, stealthy shell-like structure is located at high altitude location.When outer
When the observer on boundary is located at the position of the following distance of stealthy shell-like structure, placed in total and rectangular area
Object is to extraneous invisible.
Embodiment
(two-dimensional section figure) as shown in Figure 1.Design structure is elongated along paper direction or rotational symmetry can be obtained
Three-dimensional structure.
Entire device is formed by multiple layer metal plank (heavy black line in Fig. 1) is arranged in parallel.The length phase of all planks
With (integral multiple for being equal to operation wavelength).Airspace between metal plank is equal (width for being equal to metal plank), and
Less than operation wavelength.Other white areas other than metal plank are all air.In the metal plank arrangement side of the first and third quadrant
It is along+45 degree directions in the orientation of the metal plank of second, four-quadrant to being along -45 degree directions.
In use, entire device is located at high-altitude.Observer is located at the following distance of device.This is to ensure
All detection electromagnetic waves are all incident from the lower face of device, rather than incident from the side end face of device.Electromagnetic wave is from device
After the lower face any angle incidence of part, the metal plate-like structure that can be designed smoothly is directed to end face outgoing thereon, and
Any reflection is not generated, and then the observer below device is realized stealthy.If digging one in designed superstructure
A duck eye, can keep while to ground object stealth and the GPS of satellite is communicated.
Fig. 2 is given in the form of gray-scale map, when a line current is located at below the structure of our designs, in entire space
The distribution of magnetic field equiphase surface.As can be seen that our structure will not cause any phase of the electromagnetic radiation generated by line current
Position distortion.
Claims (8)
1. a kind of novel high-altitude invisible structure, it is characterised in that the structure is a shell-like structure, is put down by multiple layer metal plank
Row rearranges, and the interval of adjacent metal plank is equal；The length of metal plank is the integral multiple of operation wavelength, metal plank
Width and plank between spacing it is identical.
2. a kind of novel high-altitude invisible structure according to claim 1, it is characterised in that the length and work of metal plank
It is as follows to make wavelength relationship：
L=m λ0, wherein L is metal plank length, and m is arbitrary positive integer, λ0It is operation wavelength, the width and plank of metal plank
Between spacing it is identical.
3. a kind of novel high-altitude invisible structure according to claim 2, it is characterised in that the interval of metal plank is mutually small
In operation wavelength.
4. a kind of novel high-altitude invisible structure according to claim 3, it is characterised in that the structure is in addition to multiple layer metal
Plank, other regions are air.
5. a kind of novel high-altitude invisible structure according to claim 1 or 2 or 3 or 4, it is characterised in that first and third
The metal plank orientation of quadrant be along -45 degree directions, the orientation of the metal plank of second, four-quadrant be along
+ 45 degree directions.
6. a kind of novel high-altitude invisible structure according to claim 5, it is characterised in that the centre of the structure is one
The air section of rectangle, for placing the object being hidden.
7. a kind of novel high-altitude invisible structure according to claim 6, it is characterised in that the air section of intermediate rectangular
Arbitrary shape any materials can be placed is hidden object.
8. a kind of novel high-altitude invisible structure according to claim 7, it is characterised in that when work, by invisible structure position
In high altitude location, when extraneous observer is located at the lower position of invisible structure, placed in total and rectangular area
Object to extraneous invisible.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810522451.XA CN108808259B (en) | 2018-05-28 | 2018-05-28 | Novel high-altitude invisible structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810522451.XA CN108808259B (en) | 2018-05-28 | 2018-05-28 | Novel high-altitude invisible structure |
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| CN108808259A true CN108808259A (en) | 2018-11-13 |
| CN108808259B CN108808259B (en) | 2021-01-08 |
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| CN201810522451.XA Active CN108808259B (en) | 2018-05-28 | 2018-05-28 | Novel high-altitude invisible structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110631401A (en) * | 2019-08-30 | 2019-12-31 | 浙江大学 | Heat conduction invisible method, device and application |
| CN111799563A (en) * | 2020-06-24 | 2020-10-20 | 清华大学 | Temperature-controlled unidirectional metal-medium composite stealth device and manufacturing method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1904655A (en) * | 2006-01-13 | 2007-01-31 | 樊后鹏 | Hidden technology invisible clothes |
| US20080024792A1 (en) * | 2006-07-25 | 2008-01-31 | John Pendry | Electromagnetic Cloaking Method |
| US20100110559A1 (en) * | 2008-10-06 | 2010-05-06 | Wenshan Cai | System, method and apparatus for cloaking |
| CN102738588A (en) * | 2011-04-06 | 2012-10-17 | 深圳光启高等理工研究院 | Method for making object invisible |
| WO2014139067A1 (en) * | 2013-03-10 | 2014-09-18 | 浙江大学 | Cylindrical electromagnetic wave cloaking device |
| US9095043B2 (en) * | 2013-02-27 | 2015-07-28 | The United States Of America As Represented By The Secretary Of The Navy | Electromagnetic cloak using metal lens |
| CN205537346U (en) * | 2016-03-24 | 2016-08-31 | 王德龙 | Stealthy ball of visible light |
| CN106684570A (en) * | 2016-12-20 | 2017-05-17 | 清华大学 | Tunable all-dielectric unidirectional electromagnetic wave stealth device |
-
2018
- 2018-05-28 CN CN201810522451.XA patent/CN108808259B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1904655A (en) * | 2006-01-13 | 2007-01-31 | 樊后鹏 | Hidden technology invisible clothes |
| US20080024792A1 (en) * | 2006-07-25 | 2008-01-31 | John Pendry | Electromagnetic Cloaking Method |
| US20100110559A1 (en) * | 2008-10-06 | 2010-05-06 | Wenshan Cai | System, method and apparatus for cloaking |
| CN102738588A (en) * | 2011-04-06 | 2012-10-17 | 深圳光启高等理工研究院 | Method for making object invisible |
| US9095043B2 (en) * | 2013-02-27 | 2015-07-28 | The United States Of America As Represented By The Secretary Of The Navy | Electromagnetic cloak using metal lens |
| WO2014139067A1 (en) * | 2013-03-10 | 2014-09-18 | 浙江大学 | Cylindrical electromagnetic wave cloaking device |
| CN205537346U (en) * | 2016-03-24 | 2016-08-31 | 王德龙 | Stealthy ball of visible light |
| CN106684570A (en) * | 2016-12-20 | 2017-05-17 | 清华大学 | Tunable all-dielectric unidirectional electromagnetic wave stealth device |
Non-Patent Citations (2)
| Title |
|---|
| PENDRY: "Controlling Electromagnetic Fields", 《PERSPECTIVES AND COMMENTARY》 * |
| 孙非: "变换光学，渐变折射率器件及其应用", 《中国博士学位论文全文数据库》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110631401A (en) * | 2019-08-30 | 2019-12-31 | 浙江大学 | Heat conduction invisible method, device and application |
| CN110631401B (en) * | 2019-08-30 | 2020-07-10 | 浙江大学 | Heat conduction invisible method, device and application |
| CN111799563A (en) * | 2020-06-24 | 2020-10-20 | 清华大学 | Temperature-controlled unidirectional metal-medium composite stealth device and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108808259B (en) | 2021-01-08 |
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