CN109917480A - A kind of active Terahertz safety check apparatus - Google Patents
A kind of active Terahertz safety check apparatus Download PDFInfo
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- CN109917480A CN109917480A CN201910215786.1A CN201910215786A CN109917480A CN 109917480 A CN109917480 A CN 109917480A CN 201910215786 A CN201910215786 A CN 201910215786A CN 109917480 A CN109917480 A CN 109917480A
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Abstract
The invention discloses a kind of active Terahertz safety check apparatus, including laser, detector and reflective mirror, light-dividing device and beam expanding lens.Laser is located at the side of tested personnel and vertical arrangement, and light-dividing device is located at the top of tested personnel, and human body front upper place and back upper place are arranged with beam expanding lens.Beam expanding lens mirror surface is relative to the inclined arrangement of perpendicular where human body back.Compared with existing passive type THz imaging technology, image quality of the present invention is clear, not the influence vulnerable to human body clothing and ambient enviroment, can be widely applied to the field of safety check such as airport, station, prison.
Description
Technical field
The present invention relates to human body safety check field, especially a kind of active Terahertz safety check apparatus.
Background technique
THz wave is the electromagnetic wave that frequency is 0 .1-1THZ range, and frequency is answered between microwave and infrared ray
Field includes: many aspects such as industrial nondestructive testing, material, medical diagnosis, atmosphere and environmental monitoring, communication.Due to too
Hertz wave can penetrate most apolar substances such as: leather, fabric, paper, therefore, hide in analyte detection carrying out human body
Without searching the person, the cache of human body just can be detected, is hidden in analyte detection in human body using wide.
Terahertz human body safety check equipment on the market is often passive type now, i.e., equipment is without actively emitting THz wave
Laser source, but passively acquisition human body itself issue THz wave be imaged.The Terahertz issued due to human body itself
Wave is very faint, along with the interference of the factors such as human body clothing, ambient enviroment, space length, actual imaging effect is caused to beat greatly
Discount can not effectively tell the danger contraband goods that human body is concealed.
Summary of the invention
In order to solve the problems, such as that the work of passive type Terahertz human body safety check equipment is low vulnerable to interference, image quality, the present invention
It is proposed a kind of active Terahertz safety check apparatus.The technical solution adopted by the present invention to solve the technical problems is: a kind of active
Formula Terahertz safety check apparatus, including laser, detector further include reflective mirror, light-dividing device and beam expanding lens.Laser is located at quilt
The side of inspection personnel and vertical arrangement, light-dividing device are located at the top of tested personnel, and human body front upper place and back upper place are arranged with
Beam expanding lens.
After the beam expanding lens mirror surface of above-mentioned active Terahertz safety check apparatus, human body front upper place and back upper place is relative to human body
The inclined arrangement of perpendicular where carrying on the back.
After the beam expanding lens mirror surface of above-mentioned active Terahertz safety check apparatus, human body front upper place and back upper place is relative to human body
Angle is between 20 degree to 60 degree between perpendicular where carrying on the back.
The beam expanding lens mirror surface of above-mentioned active Terahertz safety check apparatus, human body front upper place and back upper place is relative to human body
Distance is between 0.5 meter to 2 meters.
Above-mentioned active Terahertz safety check apparatus, laser top are disposed with reflective mirror.
Above-mentioned active Terahertz safety check apparatus, it is inclination cloth that the reflective mirror above laser, which is relative to laser,
It sets.
Above-mentioned active Terahertz safety check apparatus, the emergent ray of light-dividing device are pointed into human body front and back respectively.
The invention has the advantages that since laser can the Terahertz that radiates far more than human body itself of active emissive porwer
Wave, the intensity for the back wave that detector receives are not easily susceptible to the influence of human body clothing and ambient enviroment, final imaging quality
It is apparently higher than passive type Terahertz safety check apparatus, has a vast market application prospect.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is schematic diagram of the present invention；
Fig. 2 is the schematic diagram of forward direction after eliminating equipment shell；
Fig. 3 be eliminating equipment shell on rear side of to schematic diagram；
The round of arrow signal laser in Fig. 2 and Fig. 3.
1. laser in figure, 2. detectors, 3. first reflective mirrors, 4. light-dividing devices, 5. second reflective mirrors, 6. thirds are reflective
Mirror, 7. beam expanding lens, 8. facade shells, 9. cantilever shalvings.
Specific embodiment
As shown in Fig. 2, a kind of active Terahertz safety check apparatus, including laser 1, detector 2 and the first reflective mirror
3, the second reflective mirror 5, third reflective mirror 6 and light-dividing device 4 and beam expanding lens 7.Laser 1 be located at the side of tested personnel and
Vertical arrangement, detector 2 are located at the front end of laser 1, the first reflective mirror 3 are disposed with above laser 1.First reflective mirror 3 is
It is to be in tilted layout relative to laser 1.In the light to light-dividing device 4 that first reflective mirror, 3 reflection laser 1 issues.
Light-dividing device 4 is located at the top of tested personnel, and it is second anti-to shine human body front and back respectively for emergent ray
On light microscopic 5.Human body front upper place and back upper place are arranged with beam expanding lens 7.
The beam expanding lens 7 of human body front upper place and back upper place is installed on cantilever shalving 9, after 7 mirror surface of beam expanding lens is relative to human body
The inclined arrangement of perpendicular where carrying on the back, tilt angle are at 45 degree.Distance of the beam expanding lens 7 apart from human body is 0.8 meter.
Laser propagation route of the invention are as follows: laser 1 issues laser, and light vertically upward, is irradiated to the first reflective mirror 3
On.Light is reflected into light-dividing device 4 by the first reflective mirror 3.The light all the way being connected to is divided into two beams by light-dividing device 4, respectively
It is irradiated on the second reflective mirror 5 of human body front upper place and back upper place.Light is reflected into third reflective mirror by the second reflective mirror 5
On 6.The illumination that third reflective mirror 6 reflects is mapped in beam expanding lens 7.The light received is expanded into ray fans by beam expanding lens 7
Face is respectively radiated to the whole body altitude range of the front and back of human body.
The above is only the preferred embodiments of the invention, are not intended to limit the invention creation, all in the present invention
Made any modifications, equivalent replacements, and improvements etc., should be included in the guarantor of the invention within the spirit and principle of creation
Within the scope of shield.
Claims (7)
1. a kind of active Terahertz safety check apparatus, including laser (1), detector (2), it is characterised in that: further include reflective
Mirror, light-dividing device (4) and beam expanding lens (7)；Laser (1) is located at the side of tested personnel and vertical arrangement, light-dividing device (4) position
In the top of tested personnel, human body front upper place and back upper place are arranged with beam expanding lens (7).
2. active Terahertz safety check apparatus according to claim 1, which is characterized in that human body front upper place and back upper place
Beam expanding lens (7) mirror surface is relative to the inclined arrangement of perpendicular where human body back.
3. active Terahertz safety check apparatus according to claim 1, which is characterized in that human body front upper place and back upper place
Beam expanding lens (7) mirror surface is between 20 degree to 60 degree relative to angle between the perpendicular where human body back.
4. active Terahertz safety check apparatus according to claim 1, which is characterized in that human body front upper place and back upper place
Beam expanding lens (7) mirror surface relative to human body distance between 0.5 meter to 1.5 meters.
5. active Terahertz safety check apparatus according to claim 1, which is characterized in that be disposed with above laser (1)
Reflective mirror.
6. active Terahertz safety check apparatus according to claim 5, which is characterized in that the reflective mirror above laser is
It is to be in tilted layout relative to laser (1).
7. active Terahertz safety check apparatus according to claim 1, which is characterized in that the emergent light of light-dividing device (4)
Line is pointed into human body front and back respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910215786.1A CN109917480A (en) | 2019-03-21 | 2019-03-21 | A kind of active Terahertz safety check apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910215786.1A CN109917480A (en) | 2019-03-21 | 2019-03-21 | A kind of active Terahertz safety check apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN109917480A true CN109917480A (en) | 2019-06-21 |
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| CN201910215786.1A Pending CN109917480A (en) | 2019-03-21 | 2019-03-21 | A kind of active Terahertz safety check apparatus |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060022140A1 (en) * | 2004-05-27 | 2006-02-02 | L-3 Communications Security And Detection Systems, Inc. | Methods and apparatus for detection of contraband using terahertz radiation |
| US20090294704A1 (en) * | 2005-06-08 | 2009-12-03 | Eitan Zailer | Active millimeter wave imaging system and method |
| CN101614722A (en) * | 2008-06-27 | 2009-12-30 | 同方威视技术股份有限公司 | A kind of personal security check system |
| CN107765338A (en) * | 2017-10-12 | 2018-03-06 | 安徽博微太赫兹信息科技有限公司 | A kind of personage based on THz imaging technology is the same as inspection safe examination system and safety inspection method |
| JP2018156586A (en) * | 2017-03-21 | 2018-10-04 | 株式会社東芝 | Monitoring system |
| CN109343142A (en) * | 2018-10-28 | 2019-02-15 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Terahertz high-velocity scanning detector gate channel imaging system |
| CN109490980A (en) * | 2018-12-28 | 2019-03-19 | 同方威视技术股份有限公司 | Millimeter wave detector gate |
| CN209570709U (en) * | 2019-03-21 | 2019-11-01 | 安徽启路达光电科技有限公司 | A kind of active Terahertz safety check apparatus |
-
2019
- 2019-03-21 CN CN201910215786.1A patent/CN109917480A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060022140A1 (en) * | 2004-05-27 | 2006-02-02 | L-3 Communications Security And Detection Systems, Inc. | Methods and apparatus for detection of contraband using terahertz radiation |
| US20090294704A1 (en) * | 2005-06-08 | 2009-12-03 | Eitan Zailer | Active millimeter wave imaging system and method |
| CN101614722A (en) * | 2008-06-27 | 2009-12-30 | 同方威视技术股份有限公司 | A kind of personal security check system |
| JP2018156586A (en) * | 2017-03-21 | 2018-10-04 | 株式会社東芝 | Monitoring system |
| CN107765338A (en) * | 2017-10-12 | 2018-03-06 | 安徽博微太赫兹信息科技有限公司 | A kind of personage based on THz imaging technology is the same as inspection safe examination system and safety inspection method |
| CN109343142A (en) * | 2018-10-28 | 2019-02-15 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Terahertz high-velocity scanning detector gate channel imaging system |
| CN109490980A (en) * | 2018-12-28 | 2019-03-19 | 同方威视技术股份有限公司 | Millimeter wave detector gate |
| CN209570709U (en) * | 2019-03-21 | 2019-11-01 | 安徽启路达光电科技有限公司 | A kind of active Terahertz safety check apparatus |
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