CN211702873U - Screen for background suppression of millimeter wave or terahertz imaging system - Google Patents
Screen for background suppression of millimeter wave or terahertz imaging system Download PDFInfo
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- CN211702873U CN211702873U CN201921380944.0U CN201921380944U CN211702873U CN 211702873 U CN211702873 U CN 211702873U CN 201921380944 U CN201921380944 U CN 201921380944U CN 211702873 U CN211702873 U CN 211702873U
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Abstract
The utility model provides a screen that is used for millimeter wave or terahertz imaging system background to restrain, its background clutter when imaging to millimeter wave terahertz imaging system now suppresses, improves millimeter wave terahertz imaging system's imaging quality, its simple structure, with low costs. The millimeter wave or terahertz imaging device comprises a central vertical plate with a width surface area, wherein a first side plate and a second side plate are respectively arranged on two sides of the central vertical plate in the width direction, an included angle alpha is formed between the first side plate and the central vertical plate, an included angle beta is formed between the second side plate and the central vertical plate, the included angle alpha ranges from 90 degrees to 180 degrees, the included angle beta ranges from 90 degrees to 180 degrees, the inner side of the shape formed by the central vertical plate, the first side plate and the second side plate is arranged towards a millimeter wave or terahertz imaging system, and the surface of the central vertical plate, the first side plate and the second side plate facing the millimeter wave or terahertz imaging system is the front side.
Description
Technical Field
The utility model relates to a shielding structure's technical field specifically is a screen that is used for millimeter wave or terahertz imaging system background to restrain.
Background
With the development of technology, millimeter wave/terahertz security inspection equipment has gradually become a new human body security inspection equipment. The imaging quality of the millimeter wave/terahertz security inspection device is susceptible to interference of the surrounding environment, and therefore suppression of millimeter wave/terahertz waves in the surrounding environment is required.
Patent application CN201810999992.1 mentions a terahertz shielding plate, which is composed of a plurality of layers, such as an exterior layer, a first thermal insulation layer, a radiator layer, a cavity layer, a second thermal insulation layer, and an interior layer, and can reduce terahertz radiation by reducing its temperature in addition to shielding terahertz waves in the environment. The shielding plate has the advantages of complex structure, high realization difficulty and high cost.
Disclosure of Invention
In view of the above problem, the utility model provides a screen that is used for millimeter wave or terahertz imaging system background to restrain, its background clutter when imaging to millimeter wave terahertz imaging system suppresses, improves millimeter wave terahertz imaging system's imaging quality, its simple structure, with low costs.
A screen for background suppression of a millimeter wave or terahertz imaging system is characterized in that: the microwave-absorbing and terahertz-wave-transmission device comprises a central vertical plate with a width surface area, wherein a first side plate and a second side plate are respectively arranged on two sides of the central vertical plate in the width direction, an included angle alpha is formed between the first side plate and the central vertical plate, an included angle beta is formed between the second side plate and the central vertical plate, the included angle alpha ranges from 90 degrees to 180 degrees, the included angle beta ranges from 90 degrees to 180 degrees, the inner side of the shape formed by the surrounding of the central vertical plate, the first side plate and the second side plate faces a millimeter wave or terahertz imaging system and is arranged, the surfaces of the central vertical plate, the first side plate and the second side plate facing away from the millimeter wave or terahertz imaging system are front surfaces, the surfaces of the central vertical plate, the first side plate and the second side plate facing away from the millimeter wave or terahertz imaging system are back surfaces, and the, the wave-absorbing material layer is a sponge type wave-absorbing material or a rubber type wave-absorbing material, the wave-absorbing material layer is arranged close to the millimeter wave or terahertz imaging system, and the structure supporting layer is positioned on the opposite outer side of the wave-absorbing material layer and is far away from the wave-absorbing material layer and is arranged close to the millimeter wave or terahertz imaging system; the first side plate and the second side plate are made of the same material and respectively comprise a structure supporting layer.
It is further characterized in that: the area size formed by the width and the height of the central vertical plate is larger than the field range of the millimeter wave or terahertz imaging system at the screen/baffle plate, so that the background radiation can be well inhibited;
the first side plate, the second side plate and the central vertical plate are equal in height;
when the wave-absorbing material layer is a sponge wave-absorbing material, the thickness of the wave-absorbing material layer is not less than 1 cm;
when the wave-absorbing material layer is a sponge wave-absorbing material, the sponge wave-absorbing material is adhered to the structure supporting layer in an adhesive mode;
the wave-absorbing material layer is a rubber wave-absorbing material, and the thickness of the wave-absorbing material layer is not less than 1 mm;
when the wave-absorbing material layer is a rubber wave-absorbing material, the sponge wave-absorbing material is adhered to the structure supporting layer in an adhering mode, or the sponge wave-absorbing material is uniformly sprayed on the structure supporting layer in a spraying mode;
the structure supporting layer is a hard and easily-processed material, the thickness of the structure supporting layer is more than or equal to 3mm, and the plate is preferably not deformed;
the material of the structure supporting layer is wood, metal or carbon fiber;
the front surface of the wave absorbing material layer of the central vertical plate is provided with an inner decorative surface layer, the back surface of the structure supporting layer is provided with an outer decorative surface layer, the inner decorative surface layer and the outer decorative surface layer are made of materials with small dielectric constant and attractive appearance to millimeter waves or terahertz waves, and the inner decorative surface layer and the outer decorative surface layer are made of cloth, plastic films or plastic sheets;
wave absorbing material layers are arranged on the front sides of the structural supporting layers of the first side plate and the second side plate;
wave absorbing material layers and inner decorative surface layers are sequentially arranged on the front sides of the structural supporting layers of the first side plate and the second side plate, and outer decorative surface layers are arranged on the back sides of the structural supporting layers of the first side plate and the second side plate;
the front surfaces of the structure supporting layers of the first side plate and the second side plate are provided with inner decorative surface layers, and the back surfaces of the structure supporting layers of the first side plate and the second side plate are provided with outer decorative surface layers.
After the technical scheme is adopted, the central vertical plate, the first side plate and the structure supporting layer of the second side plate are spliced to form an integral structure, the wave absorbing material layer of the central vertical plate is arranged close to the millimeter wave or terahertz imaging system, the background clutter when the millimeter wave or terahertz imaging system is imaged is suppressed through the wave absorbing material layer, the imaging quality of the millimeter wave or terahertz imaging system is improved, the wave absorbing material layer is specifically sponge type wave absorbing material or rubber type wave absorbing material, the sponge type wave absorbing material can be directly arranged on the front face of the structure supporting layer of the central vertical plate in a simple connection mode, the structure is simple, and the cost is low.
Drawings
Fig. 1 is a schematic structural view of a perspective view of the present invention;
fig. 2 is a schematic cross-sectional structural view of a first embodiment of the center vertical plate according to the present invention;
fig. 3 is a schematic cross-sectional structural view of a second embodiment of the central vertical plate according to the present invention;
the names corresponding to the sequence numbers in the figure are as follows:
the wave-absorbing plate comprises a central vertical plate 1, a first side plate 2, a second side plate 3, a wave-absorbing material layer 4, a structure supporting layer 5, an inner decorative surface layer 6 and an outer decorative surface layer 7.
Detailed Description
A screen for background suppression in millimeter wave or terahertz imaging systems, see fig. 1-3: the microwave-absorbing and terahertz-wave-transmission structure comprises a central vertical plate 1 with a width surface area, wherein a first side plate 2 and a second side plate 3 are respectively arranged on two sides of the central vertical plate 1 in the width direction, an included angle alpha is formed between the first side plate 2 and the central vertical plate 1, an included angle beta is formed between the second side plate 3 and the central vertical plate 1, the included angle alpha is in a range of 90-180 degrees, the included angle beta is in a range of 90-180 degrees, the inner side of the shape defined by the central vertical plate 1, the first side plate 2 and the second side plate 3 faces a millimeter wave or terahertz imaging system, the surfaces of the central vertical plate 1, the first side plate 2 and the second side plate 3 facing away from the millimeter wave or terahertz imaging system are front surfaces, the surfaces of the central vertical plate 1, the first side plate 2 and the second side plate 3 facing away from the millimeter wave or terahertz imaging system are, the wave-absorbing material layer 4 is a sponge type wave-absorbing material or a rubber type wave-absorbing material, the wave-absorbing material layer 4 is arranged close to the millimeter wave or terahertz imaging system, and the structure supporting layer 5 is positioned on the opposite outer side of the wave-absorbing material layer and is far away from the wave-absorbing material layer and is arranged close to the millimeter wave or terahertz imaging system; the first side plate 2 and the second side plate 3 are made of the same material and both comprise a structural supporting layer 5.
The area size formed by the width and the height of the central vertical plate 1 is larger than the field range of the millimeter wave or terahertz imaging system at the screen/baffle plate, so that the background radiation can be well inhibited;
the first side plate 2, the second side plate 3 and the central vertical plate 1 are equal in height;
when the wave-absorbing material layer 4 is a sponge wave-absorbing material, the thickness of the wave-absorbing material layer is not less than 1 cm;
when the wave-absorbing material layer 4 is a sponge wave-absorbing material, the sponge wave-absorbing material is adhered to the structure supporting layer 5 in an adhesion mode;
the wave-absorbing material layer 4 is a rubber wave-absorbing material, and the thickness of the wave-absorbing material layer is not less than 1 mm;
when the wave-absorbing material layer 4 is a rubber wave-absorbing material, the sponge wave-absorbing material is adhered to the structure supporting layer 5 in an adhering mode, or the sponge wave-absorbing material is uniformly sprayed on the structure supporting layer 5 in a spraying mode;
the structure supporting layer 5 is a hard and easily-processed material, the thickness of the structure supporting layer is more than or equal to 3mm, and the plate is preferably not deformed;
the material of the structure supporting layer 5 is wood, metal or carbon fiber;
the front surface of the wave-absorbing material layer 4 of the central vertical plate 1 is provided with an inner decorative surface layer 6, the back surface of the structure supporting layer 5 is provided with an outer decorative surface layer 7, the inner decorative surface layer 6 and the outer decorative surface layer 7 are made of materials with small dielectric constant and attractive appearance for millimeter waves or terahertz waves, and the inner decorative surface layer 6 and the outer decorative surface layer 7 are specifically made of cloth, plastic films or plastic sheets;
the first side plate 2 and the second side plate 3 comprise the following structures:
a, the first side plate 2 and the second side plate 3 only comprise a structural supporting layer 5;
the front surfaces of the structural supporting layers 5 of the first side plate 2 and the second side plate 3 are provided with wave-absorbing material layers 4;
c, wave-absorbing material layers 4 and inner decorative surface layers 6 are sequentially arranged on the front sides of the structural supporting layers 5 of the first side plate 2 and the second side plate 3 from inside to outside, and outer decorative surface layers 7 are arranged on the back sides of the structural supporting layers 5 of the first side plate 2 and the second side plate 3;
d, the front faces of the structure supporting layers 5 of the first side plate 2 and the second side plate 3 are provided with inner decorative surface layers 6, and the back faces of the structure supporting layers 5 of the first side plate 2 and the second side plate 3 are provided with outer decorative surface layers 7.
The first embodiment is as follows: the central vertical plate 1 is connected with the first side plate 2 and the second side plate 3 on two sides through a hinge (which is a mature structure), the included angle alpha and the included angle beta of the first side plate 2 and the second side plate 3 relative to the central vertical plate 1 are arranged according to actual requirements, the cross section of the central vertical plate 1 is cut away and is only provided with a wave absorbing material layer 4 and a structure supporting layer 5, and the first side plate 2 and the second side plate 3 are only provided with the structure supporting layer 5.
The second embodiment is as follows: central riser 1, first curb plate 2, the structure supporting layer that second curb plate 3 corresponds passes through integrated into one piece, make first curb plate 2, second curb plate 3 is for central riser 1's contained angle alpha, contained angle beta numerical value is fixed, the cross section of central riser 1 is cut the state and is openly to the back in order for interior finish layer 6, wave-absorbing material layer 4, structure supporting layer 5, exterior finish layer 7, first curb plate 2, 3 cross sections of second curb plate are cut the state and openly to the back in order for interior finish layer 6, structure supporting layer 5, exterior finish layer 7, wherein at specific in-process, according to the demand at first curb plate 2, set up wave-absorbing material layer 4 between interior finish layer 6 of second curb plate 3 and structure supporting layer 5.
The working principle is as follows: the structure supporting layer of central riser, first curb plate, the second curb plate splices and forms overall structure, the absorbing material layer of central riser is close to millimeter wave or terahertz imaging system setting, it suppresses the background clutter when imaging to millimeter wave or terahertz imaging system through the absorbing material layer, improve millimeter wave or terahertz imaging system's imaging quality, the absorbing material layer specifically is sponge type absorbing material or rubber type absorbing material, it can directly set up the front at the structure supporting layer of central riser through simple connected mode, the steam generator is simple in structure, and is low in cost.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. A screen for background suppression of a millimeter wave or terahertz imaging system is characterized in that: the microwave-absorbing and terahertz-wave-transmission device comprises a central vertical plate with a width surface area, wherein a first side plate and a second side plate are respectively arranged on two sides of the central vertical plate in the width direction, an included angle alpha is formed between the first side plate and the central vertical plate, an included angle beta is formed between the second side plate and the central vertical plate, the included angle alpha ranges from 90 degrees to 180 degrees, the included angle beta ranges from 90 degrees to 180 degrees, the inner side of the shape formed by the surrounding of the central vertical plate, the first side plate and the second side plate faces a millimeter wave or terahertz imaging system and is arranged, the surfaces of the central vertical plate, the first side plate and the second side plate facing away from the millimeter wave or terahertz imaging system are front surfaces, the surfaces of the central vertical plate, the first side plate and the second side plate facing away from the millimeter wave or terahertz imaging system are back surfaces, and the, the wave-absorbing material layer is a sponge type wave-absorbing material or a rubber type wave-absorbing material, the wave-absorbing material layer is arranged close to the millimeter wave or terahertz imaging system, and the structure supporting layer is positioned on the opposite outer side of the wave-absorbing material layer and is far away from the wave-absorbing material layer and is arranged close to the millimeter wave or terahertz imaging system; the first side plate and the second side plate are made of the same material and respectively comprise a structure supporting layer;
the structure supporting layer is made of hard and easily-processed materials, and the thickness of the structure supporting layer is more than or equal to 3 mm;
the front surface of the wave-absorbing material layer of the central vertical plate is provided with an inner decorative surface layer, the back surface of the structure supporting layer is provided with an outer decorative surface layer, and the inner decorative surface layer and the outer decorative surface layer are made of cloth, plastic films or plastic sheets.
2. The screen for background suppression in millimeter wave or terahertz imaging systems of claim 1, wherein: when the wave-absorbing material layer is a sponge wave-absorbing material, the thickness of the wave-absorbing material layer is not less than 1 cm.
3. A screen for background suppression in millimeter wave or terahertz imaging systems according to claim 2, wherein: when the wave-absorbing material layer is a sponge wave-absorbing material, the sponge wave-absorbing material is adhered to the structure supporting layer in an adhesive mode.
4. The screen for background suppression in millimeter wave or terahertz imaging systems of claim 1, wherein: the wave-absorbing material layer is a rubber wave-absorbing material, and the thickness of the wave-absorbing material layer is not less than 1 mm.
5. The screen for background suppression in millimeter wave or terahertz imaging systems of claim 4, wherein: when the wave-absorbing material layer is a rubber wave-absorbing material, the sponge wave-absorbing material is adhered to the structure supporting layer in an adhering mode, or the sponge wave-absorbing material is uniformly sprayed on the structure supporting layer in a spraying mode.
6. The screen for background suppression in millimeter wave or terahertz imaging systems of claim 1, wherein: wave-absorbing material layers are arranged on the front faces of the structure supporting layers of the first side plate and the second side plate.
7. The screen for background suppression in millimeter wave or terahertz imaging systems of claim 1, wherein: wave-absorbing material layers and interior decorative surface layers are sequentially arranged on the front faces of the structure supporting layers of the first side plate and the second side plate, and exterior decorative surface layers are arranged on the back faces of the structure supporting layers of the first side plate and the second side plate.
8. The screen for background suppression in millimeter wave or terahertz imaging systems of claim 1, wherein: the front surfaces of the structure supporting layers of the first side plate and the second side plate are provided with inner decorative surface layers, and the back surfaces of the structure supporting layers of the first side plate and the second side plate are provided with outer decorative surface layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921380944.0U CN211702873U (en) | 2019-08-23 | 2019-08-23 | Screen for background suppression of millimeter wave or terahertz imaging system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921380944.0U CN211702873U (en) | 2019-08-23 | 2019-08-23 | Screen for background suppression of millimeter wave or terahertz imaging system |
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| CN211702873U true CN211702873U (en) | 2020-10-16 |
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| CN201921380944.0U Active CN211702873U (en) | 2019-08-23 | 2019-08-23 | Screen for background suppression of millimeter wave or terahertz imaging system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110418566A (en) * | 2019-08-23 | 2019-11-05 | 上海亨临光电科技有限公司 | A kind of screen/plate washer inhibited for millimeter wave or terahertz imaging system background |
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2019
- 2019-08-23 CN CN201921380944.0U patent/CN211702873U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110418566A (en) * | 2019-08-23 | 2019-11-05 | 上海亨临光电科技有限公司 | A kind of screen/plate washer inhibited for millimeter wave or terahertz imaging system background |
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