CN207663078U - Terahertz imaging device and safety check instrument - Google Patents
Terahertz imaging device and safety check instrument Download PDFInfo
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- CN207663078U CN207663078U CN201721530905.5U CN201721530905U CN207663078U CN 207663078 U CN207663078 U CN 207663078U CN 201721530905 U CN201721530905 U CN 201721530905U CN 207663078 U CN207663078 U CN 207663078U
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Abstract
A kind of terahertz imaging device of the utility model offer and safety check instrument, wherein terahertz imaging device include：Plane of scanning motion mirror, Use of The Polygonal Mirror Scanner mirror, speculum and terahertz detector；Wherein, the THz wave that object to be tested reflects is reflexed to polyhedron surface sweeping mirror by Use of The Polygonal Mirror Scanner mirror, any one ellipsoid of Use of The Polygonal Mirror Scanner mirror converges THz wave to speculum, and THz wave is reflexed to terahertz detector by speculum；Use of The Polygonal Mirror Scanner mirror rotates around the axis of rotation, and when rotated, each rotation to the ellipsoid relative to plane of scanning motion mirror is scanned Use of The Polygonal Mirror Scanner mirror for treating test object, is received the THz wave of plane of scanning motion mirror reflection and is converged to THz wave.Terahertz imaging device provided by the utility model and safety check instrument, can be without using X-ray, and the THz wave reflected using object to be tested is realized the detection for treating test object, reduces threat of the safety check instrument to health.
Description
Technical field
The utility model is related to THz wave technology more particularly to a kind of terahertz imaging device and safety check instrument.
Background technology
Safety inspection be port examination (including frontier inspection, customs inspection, health quarantine, animal and plant quarantine and safety inspection
Look into) and public security inspection one of content.The content of safety check mainly checks whether taken in passenger and its luggage and articles
The dangerous goods such as band gun, ammunition, explosive, the toxic reflectivity of burn into, to ensure aircraft, car, passenger and the peace of the public
Entirely.
Safety check apparatus in the prior art is mostly X-ray safety check instrument, will be by by means of conveyer belt using the safety check instrument of X-ray
Check that article is sent into X-ray examination channel and completes the electronic equipment checked.Examined article enters X-ray examination channel, will
Stop that detection sensor, detection signal are sent to systems control division point, generates X-ray trigger signal, the radiographic source of triggering X camera shootings
Send X-ray beam.A branch of fan-shaped x-ray beam by collimator passes through the inspected object on conveyer belt, and X-ray is by inspected object
It absorbs, finally bombardment is mounted on the dual energy peninsula device detector in channel.X-ray is changed into signal by detector, these are very
Weak signal is amplified, and is sent to signal processing cabinet and is further processed.
Using the prior art, since X-ray safety check instrument uses the actively operating mode to human-body emitting X-ray, although often
Secondary amount of radiation is only 0.2 μ Sv, but continually uses safety check instrument still can exist to health and threaten.
Utility model content
A kind of terahertz imaging device of the utility model offer and safety check instrument, reduce prestige of the safety check instrument to health
The side of body.
The utility model provides a kind of terahertz imaging device, including：
Plane of scanning motion mirror, Use of The Polygonal Mirror Scanner mirror, speculum and terahertz detector, the Use of The Polygonal Mirror Scanner mirror is by N number of ellipse
For spherical surface around forming, the N is positive integer；
The THz wave that object to be tested reflects is reflexed to the polyhedron surface sweeping mirror by the plane of scanning motion mirror, described more
Any one ellipsoid of face swept-volume mirror converges the THz wave to the speculum, and the speculum is by the THz wave
The terahertz detector is reflexed to, the light path being scanned to the object to be tested is formed；
The Use of The Polygonal Mirror Scanner mirror rotates around the axis of rotation, and when rotated, each rotation is extremely for the Use of The Polygonal Mirror Scanner mirror
It is anti-to receive the plane of scanning motion mirror for being scanned to the object to be tested for ellipsoid relative to the plane of scanning motion mirror
The THz wave penetrated simultaneously converges the THz wave；
The terahertz detector is used to receive the THz wave of the speculum reflection, and the THz wave is turned
It changes voltage signal into, and Terahertz image is generated according to the voltage signal.
In one embodiment of the utility model, the angle between the adjacent ellipsoid of the Use of The Polygonal Mirror Scanner mirror is 360/N
Degree；
The rotary shaft of the Use of The Polygonal Mirror Scanner mirror is the central shaft of the faces the N body ellipsoid of the Use of The Polygonal Mirror Scanner mirror.
In one embodiment of the utility model, the focus when any ellipsoid of the Use of The Polygonal Mirror Scanner mirror and the scanning
When the center of plane mirror is corresponding, the focus of the ellipsoid is also corresponding with the center of the speculum simultaneously.
In one embodiment of the utility model, the plane of scanning motion mirror is fixed relative to described device, the Terahertz at
It is rotated perpendicular to the Use of The Polygonal Mirror Scanner direction as device is whole, the Use of The Polygonal Mirror Scanner mirror to treat test object is swept
The vertical direction for retouching direction is scanned.
In one embodiment of the utility model, described device further includes：Follow module；
It is described that module is followed integrally to follow the object under test to move for controlling the terahertz imaging device so as to sweep
It is opposite with the object to be tested to retouch plane mirror.
In one embodiment of the utility model, described device further includes：It is imaged adjusting apparatus；
The imaging adjusting apparatus is used for according to the object to be tested at a distance from the terahertz imaging device, adjustment
The imaging size of the terahertz imaging device.
In one embodiment of the utility model, described device further includes：Reflection unit；
The reflection unit is arranged in the object under test in the another side of the plane of scanning motion mirror；
The reflection unit is used to the THz wave of the object under test backside reflection reflexing to the plane of scanning motion mirror.
In one embodiment of the utility model, described device further includes：Protecting window；
The protecting window is arranged outside the plane of scanning motion mirror, and the protecting window is for preventing dust from entering the dress
It sets, and the plane of scanning motion mirror is made to pass through the THz wave that the protecting window receives the object reflection to be tested.
In one embodiment of the utility model, described device further includes：Terahertz emission source；
The terahertz emission source is used to irradiate the object to be tested by the THz wave of 0.1THz-10THz.
The utility model provides a kind of safety check instrument, includes the M terahertz imagings as described in any one of above-described embodiment
Device, the M are positive integer.
A kind of terahertz imaging device of the utility model offer and safety check instrument, wherein terahertz imaging device include：Scanning
Plane mirror, Use of The Polygonal Mirror Scanner mirror, speculum and terahertz detector, by N number of ellipsoid around forming, N is Use of The Polygonal Mirror Scanner mirror
Positive integer；Wherein, the THz wave that object to be tested reflects is reflexed to polyhedron surface sweeping mirror, Use of The Polygonal Mirror Scanner by plane of scanning motion mirror
Any one ellipsoid of mirror converges THz wave to speculum, and THz wave is reflexed to terahertz detector by speculum, is formed
Treat the light path that test object is scanned；Use of The Polygonal Mirror Scanner mirror rotates around the axis of rotation, Use of The Polygonal Mirror Scanner mirror when rotated, often
One rotation is scanned to the ellipsoid relative to plane of scanning motion mirror for treating test object, receives the reflection of plane of scanning motion mirror
THz wave and THz wave is converged；Terahertz detector is used to receive the THz wave of speculum reflection, will too
Hertz wave is converted into voltage signal, and generates Terahertz image according to voltage signal.Terahertz imaging provided by the utility model
Device and safety check instrument, can be without using X-ray, and the THz wave reflected using object to be tested generates terahertz
Hereby image reduces threat of the safety check instrument to health to realize the detection for treating test object.Meanwhile Use of The Polygonal Mirror Scanner
Each ellipsoid of mirror is scanned and is converged to THz wave in turn by way of rotation, thus also improves system
Image taking speed.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described.
It should be evident that the accompanying drawings in the following description is only some embodiments of the utility model.
It for those of ordinary skill in the art, without having to pay creative labor, can also be according to this
A little attached drawings obtain other attached drawings.
Fig. 1 is the structural schematic diagram of the utility model terahertz imaging device embodiment one；
Fig. 2 is the structural schematic diagram of the utility model terahertz imaging device embodiment two；
Fig. 3 is the structural schematic diagram of the utility model safety check instrument embodiment one.
Reference sign：
1：Plane of scanning motion mirror；
2：Use of The Polygonal Mirror Scanner mirror；
3：Speculum；
4：Terahertz detector；
5：Protecting window.
Through the above attached drawings, it has been shown that the specific embodiment of the disclosure will be hereinafter described in more detail.These attached drawings
It is not intended to limit the scope of this disclosure concept by any means with verbal description, but is by referring to specific embodiments
Those skilled in the art illustrate the concept of the disclosure.
Specific implementation mode
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.
Embodiment described in following exemplary embodiment does not represent all embodiment party consistent with this disclosure
Formula.On the contrary, they are only the devices and side consistent with some aspects as detailed in the attached claim, the disclosure
The example of method.
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe；Obviously, the described embodiments are only a part of the embodiments of the utility model, without being limited to
The embodiment of the utility model whole.Based on the embodiments of the present invention, those of ordinary skill in the art are not making
The every other embodiment obtained under the premise of creative work, shall fall within the protection scope of the present invention.
Term " first ", " second ", " third " in the specification and claims of the utility model and above-mentioned attached drawing,
(if present)s such as " the 4 " are for distinguishing similar object, without being used to describe specific sequence or precedence.It answers
The data that the understanding uses in this way can be interchanged in the appropriate case, for example so as to the embodiments of the present invention described herein
It can be implemented with the sequence other than those of illustrating or describing herein.
In addition, term " comprising " and " having " and their any deformation, it is intended that it includes example to cover non-exclusive
Such as, process, method, system, product or the equipment for containing series of steps or unit those of are not necessarily limited to clearly to list
Step or unit, but may include not listing clearly or for intrinsic other of these processes, method, product or equipment
Step or unit.The technical solution of the utility model is described in detail with specifically embodiment below.These have below
The embodiment of body can be combined with each other, and same or analogous concept or process may be repeated no more in some embodiments.
Fig. 1 is the structural schematic diagram of the utility model terahertz imaging device embodiment one.As shown in Figure 1, the present embodiment
Middle terahertz imaging device includes：
Plane of scanning motion mirror 1, Use of The Polygonal Mirror Scanner mirror 2, speculum 3 and terahertz detector 4, Use of The Polygonal Mirror Scanner mirror 2 is by N number of ellipse
For spherical surface around forming, N is positive integer.
Wherein, the THz wave that object to be tested reflects is reflexed to polyhedron surface sweeping mirror by plane of scanning motion mirror 1, and polyhedron is swept
Any one ellipsoid for retouching mirror 2 converges THz wave to speculum 3, and THz wave is reflexed to terahertz detector by speculum 3
4, the light path that test object is scanned is treated in formation；Use of The Polygonal Mirror Scanner mirror 2 rotates around the axis of rotation, and Use of The Polygonal Mirror Scanner mirror 2 exists
When rotation, each rotation to the ellipsoid relative to plane of scanning motion mirror 1 is scanned for treating test object, receives scanning
The THz wave of the reflection of plane mirror 1 simultaneously converges THz wave；Terahertz detector 4 is used to receive the reflection of speculum 3
THz wave is converted into voltage signal, and generates Terahertz image according to voltage signal by THz wave.
Specifically, THz wave has the materials such as textile, leather and penetrates well between infrared between millimeter wave
Property, institute has higher spatial resolution at image；Multiple orders of magnitude lower than X-ray energy, electricity will not be caused to biological tissue
From damage, therefore, THz wave imaging system has practicability, can form effective supplement with traditional safety check apparatus.
In terahertz imaging device provided in this embodiment, plane of scanning motion mirror 1, Use of The Polygonal Mirror Scanner mirror 2,3 and of speculum
Terahertz detector 4, which can be arranged in closed safety check instrument, forms entirety, and safety check instrument is that there are openings for plane of scanning motion mirror 1, is made
Obtain the entrance that plane of scanning motion mirror 1 receives external THz wave as safety check instrument.
As shown in Figure 1, plane of scanning motion mirror 1 is directed at object to be tested, and the THz wave for reflecting object to be tested
Reflex to speculum 3.The light path of the THz wave of object to be tested reflection as shown, be in an angle with plane of scanning motion mirror 1, and
And optionally the angle is sized to according to the angle between the plane of scanning motion mirror 1 and object to be tested, Use of The Polygonal Mirror Scanner mirror 2
It is adjusted, so that the THz wave that object to be tested reflects is reflexed to Use of The Polygonal Mirror Scanner mirror 2 by plane of scanning motion mirror 1.
Use of The Polygonal Mirror Scanner mirror 2 is used to receive the THz wave of the object to be tested of the reflection of plane of scanning motion mirror 1, wherein multi-panel
Swept-volume mirror 2 is rotated around its rotary shaft, and optionally rotary shaft is the center of the faces the N body ellipsoid of Use of The Polygonal Mirror Scanner mirror 2
Axis, when rotated, each rotation to the ellipsoid relative to plane of scanning motion mirror 1 is flat for receiving scanning for Use of The Polygonal Mirror Scanner mirror 2
The THz wave for the object to be tested that face mirror 1 reflects, and by the ellipsoid relative to plane of scanning motion mirror 1 to plane of scanning motion mirror 1
The THz wave of reflection is converged, and the THz wave after convergence is then reflexed to speculum 3.
Speculum 3 is used to the THz wave that Use of The Polygonal Mirror Scanner mirror 2 reflects reflexing to terahertz wave detector, wherein anti-
It is in an angle that mirror 3, which is penetrated, with terahertz detector 4, and optionally, which is sized to according to the speculum 3 and polyhedron
Angle between scanning mirror 2, terahertz detector 4 is adjusted.
Terahertz detector 4 is used to receive the THz wave of the reflection of speculum 3, and THz wave is converted into voltage letter
Number, and Terahertz image is generated according to voltage signal, terahertz detector 4 is device common in the art, no longer superfluous herein
It states.
Wherein, the terahertz imaging device in the present embodiment can be reflected to be measured by the rotation of Use of The Polygonal Mirror Scanner mirror 2
Try the THz wave of object reflected such as the object to be tested in Fig. 1 in A-A ' direction scopes.
Optionally, if object to be tested is human body, A-A ' can indicate the direction scope of human body from head to foot in figure,
Human body can be indicated from left side arm to the direction scope of right side arm.
Therefore, the setting direction of terahertz imaging device is adjusted, you can change the scanning range of terahertz imaging device.
Terahertz imaging device provided in this embodiment passes through the rotation for the Use of The Polygonal Mirror Scanner mirror being surrounded by by N number of ellipsoid
Turn, the convergence and reflection for treating the THz wave reflected in test object a direction is realized, when polyhedron surface sweeping mirror is around wherein
Mandrel rotates a circle, and the number of scanning lines for treating the direction of rotation of test object is two of ellipsoid quantity on Use of The Polygonal Mirror Scanner mirror
Times.
Therefore, the terahertz imaging device in the present embodiment can be completed to treat by the rotation of Use of The Polygonal Mirror Scanner mirror
The single-row scanning of test object, and the convergence for the THz wave that object point on the column direction is radiated or reflected can be completed.
However it is current in the prior art, the highly sensitive detector array of terahertz wave band involves great expense, in terahertz
Focal plane imaging can not be also used in being hereby imaged, and mostly use scanning imagery greatly.It is connect meeting the non-of the public places such as airport, station
In touch, big visual field, quick, high-resolution human body Terahertz scanning imagery, swept using the Terahertz ray machine of multiple detectors
It is most realistic individual body Terahertz safety check imaging method to retouch imaging.
In optical mechaical scanning imaging, human body is radiated or is reflected as the imaging system of concentrating element using reflecting surface
Faint THz wave loss is small.It is realized using reflecting surface two dimensional motion to that can be extended by the system of the scanning imagery of imaging human body
As the time, image quality is reduced；It is realized to by the method for the scanning imagery of imaging human body using the conical scanning of single scanning mirror
The motion complexity that imaging time can be extended, increase scanning means.
Therefore the device of the present embodiment than in the prior art is compared simpler compact, efficient, has higher practical valence
Value, and with the scan mode that rotates and adjust plane of scanning motion mirror in the prior art, Use of The Polygonal Mirror Scanner mirror is surrounded into central shaft
The scan mode for being rotated or rotating integrally terahertz imaging device is highly efficient, rotates required space and driving energy
Amount smaller reduces energy loss and improves efficiency, increase terahertz to improve the image taking speed of terahertz imaging device
The hereby practicability of imaging device reduces the cost of the device.
To sum up, terahertz imaging device provided in this embodiment, by using the ellipsoid on Use of The Polygonal Mirror Scanner mirror to sweeping
The object point retouched itself radiates or the THz wave of transmitting is converged, and reduces di-lens to faint THz wave
Loss, improves image quality, and simplified the structure of scanned imagery device, reduces cost.
Optionally, in the above-described embodiments, it for loss of each component to THz wave in reduction system, realizes preferable
Imaging effect, above-mentioned plane of scanning motion mirror 1, Use of The Polygonal Mirror Scanner mirror 2, speculum 3 and terahertz detector 4 are all made of reflective
Operating mode, and be all made of aluminum alloy materials and be process, then its surface quality is increased by the method for optics cold working.
Optionally, in the above-described embodiments, the angle between the adjacent ellipsoid of Use of The Polygonal Mirror Scanner mirror 2 is 360/N degree；It is more
The rotary shaft of face swept-volume mirror 2 is the central shaft of the faces the N body ellipsoid of Use of The Polygonal Mirror Scanner mirror 2.
Specifically, for the ease of Project Realization, Use of The Polygonal Mirror Scanner mirror 2 is surrounded by N number of identical ellipsoid and is formed, adjacent ellipse
Angle between spherical surface is 360/N degree, preferably, N can take 2 or 4.Each ellipsoid completes the A-A ' for object to be tested
The convergence to THz wave is completed while direction is scanned.
Specifically, using the central shaft of the faces the N body ellipsoid of Use of The Polygonal Mirror Scanner mirror 2 as the rotary shaft of Use of The Polygonal Mirror Scanner mirror 2,
The angle between the long rotary shaft of all ellipsoids and the central shaft of Use of The Polygonal Mirror Scanner mirror 2 can be made equal.Wherein specifically, more
The central shaft of face body surface sweeping mirror is vertical with the directions A-A ' of object to be tested.
Optionally, in the above-described embodiments, when the focus of any ellipsoid of Use of The Polygonal Mirror Scanner mirror 2 and plane of scanning motion mirror 1
Center it is corresponding when, the focus of ellipsoid is also corresponding with the center of speculum 3 simultaneously.
In the various embodiments described above, by the rotation of Use of The Polygonal Mirror Scanner mirror 2, sweeping for the directions test object A-A ' is treated in realization
It retouches.Meanwhile in order to realize one side of the object plane to be tested to terahertz imaging device, the scanning perpendicular to the directions A-A ', this reality
It applies example and following two realization methods is provided：
Optionally, a kind of possible realization method is that speculum 3 is used to carry out reciprocally swinging with the central shaft of speculum 3,
Vertical direction to treat 2 scanning direction of Use of The Polygonal Mirror Scanner mirror of test object is scanned.
Optionally, alternatively possible realization method is that plane of scanning motion mirror 1 is fixed relative to device, terahertz imaging dress
Set it is whole rotated perpendicular to Use of The Polygonal Mirror Scanner direction, 2 scanning direction of Use of The Polygonal Mirror Scanner mirror to treat test object is hung down
Histogram is to being scanned.
Optionally, in the above-described embodiments, terahertz imaging device further includes：Follow module；
Follow module integrally object under test to be followed to move for controlling terahertz imaging device so that plane of scanning motion mirror 1 with
Object to be tested is opposite.Such as optionally, it is detective devices using infrared ray to follow module, is sent out for detecting object to be tested
Infrared ray.After following the infrared ray that module detects that object to be tested is sent out, locked to be tested, with module by waiting for
The infrared ray that test object is sent out judges it after location A is moved to B location, and the first row plane of scanning motion mirror 1 and the second row are swept
It retouches plane mirror 2 and keeps opposite at B location with object to be tested.
Optionally, in the above-described embodiments, terahertz imaging device further includes：It is imaged adjusting apparatus；
Wherein, imaging adjusting apparatus is used to according to object to be tested at a distance from terahertz imaging device, adjust Terahertz
The imaging size of imaging device.Specifically, since terahertz imaging device is typically fixed to a predeterminated position, and object to be tested
Body is mostly the article etc. on mobile human body or conveyer belt, and the distance between terahertz imaging device is not fixed, and works as human body
When from device farther out, device imaging is smaller, inconvenient from image to judge；When human body is closer from device, device is imaged more very much not
Entirely, therefore Whole Body image cannot be presented.Optionally, imaging adjusting apparatus is convex lens and concavees lens, and wherein convex lens is used
In the size of the imaging of amplifying device, concavees lens are used to reduce the size of the imaging of device, and according to object to be tested and terahertz
Hereby the distance of imaging device carries out selecting to zoom in or out and adjust specifically to zoom in or out parameter.
Fig. 2 is the structural schematic diagram of the utility model terahertz imaging device embodiment two.As shown in Fig. 2, the present embodiment
The terahertz imaging device of offer, on the basis of above-mentioned embodiment illustrated in fig. 1, terahertz imaging device further includes：Reflection dress
It sets；
Wherein, reflection unit is arranged in object under test in the another side of plane of scanning motion mirror 1, and reflection unit is used for determinand
The THz wave of body backside reflection reflexes to plane of scanning motion mirror 1.
Optionally, reflection unit can be plane mirror, metallic plate or other it is any can be by object plane to be tested to sweeping
The THz wave for retouching 1 back side of plane mirror reflexes to the material of plane of scanning motion mirror 1.
Optionally, in the above-described embodiments, terahertz imaging device further includes：Protecting window 5；
Wherein, protecting window 5 is arranged outside plane of scanning motion mirror 1, and protecting window 5 makes for preventing dust from entering device
Plane of scanning motion mirror 1 receives the THz wave of object reflection to be tested by protecting window 5.
Optionally, protecting window 5 can be glass or papery material so that THz wave can pass through protecting window 5
And prevent dust from falling into inside terahertz imaging device, and loss of the protecting window 5 to THz wave is reduced as far as possible.
Optionally, in the above-described embodiments, terahertz imaging device further includes：Terahertz emission source.
Wherein, the purpose for terahertz emission source being arranged in the present embodiment in terahertz imaging device is that realization is active
Terahertz emission monitors.
Specifically, terahertz emission source can be arranged in the position of plane of scanning motion mirror, or be located at terahertz imaging device
Outside is arbitrarily towards the position of object to be tested.
From terahertz emission source to object emission THz wave to be tested, to pass through the THz wave of 0.1THz-10THz
Irradiate object to be tested.
And the mode by terahertz imaging device according to above-described embodiment, receive object reflected terahertz to be tested hereby
The THz wave of radiation emission realizes the imaging for treating the THz wave that test object is reflected.
Fig. 3 is the structural schematic diagram of the utility model safety check instrument embodiment one.As shown in figure 3, peace provided in this embodiment
Examining instrument 30 includes：Terahertz imaging device in M any of the above-described embodiment, wherein M is positive integer.
Finally it should be noted that：The above various embodiments is only to illustrate the technical solution of the utility model, not for right
It is limited；Although the utility model has been described in detail with reference to the foregoing embodiments, the ordinary skill of this field
Personnel should understand that：It still can be with technical scheme described in the above embodiments is modified, or to which part
Or all technical features carries out equivalent replacement；And these modifications or replacements, it does not separate the essence of the corresponding technical solution
The range of various embodiments of the utility model technical solution.
Claims (10)
1. a kind of terahertz imaging device, which is characterized in that including：
Plane of scanning motion mirror, Use of The Polygonal Mirror Scanner mirror, speculum and terahertz detector, the Use of The Polygonal Mirror Scanner mirror is by N number of ellipsoid
Around into the N is positive integer；
The THz wave that object to be tested reflects is reflexed to the polyhedron surface sweeping mirror, the polyhedron by the plane of scanning motion mirror
Any one ellipsoid of scanning mirror converges the THz wave to the speculum, and the speculum reflects the THz wave
To the terahertz detector, the light path being scanned to the object to be tested is formed；
The Use of The Polygonal Mirror Scanner mirror rotates around the axis of rotation, and when rotated, each is rotated to opposite the Use of The Polygonal Mirror Scanner mirror
In the ellipsoid of the plane of scanning motion mirror for being scanned to the object to be tested, the plane of scanning motion mirror reflection is received
The THz wave simultaneously converges the THz wave；
The terahertz detector is used to receive the THz wave of the speculum reflection, and the THz wave is converted into
Voltage signal, and Terahertz image is generated according to the voltage signal.
2. the apparatus according to claim 1, which is characterized in that
Angle between the adjacent ellipsoid of the Use of The Polygonal Mirror Scanner mirror is 360/N degree；
The rotary shaft of the Use of The Polygonal Mirror Scanner mirror is the central shaft of the faces the N body ellipsoid of the Use of The Polygonal Mirror Scanner mirror.
3. the apparatus of claim 2, which is characterized in that
It is described ellipse when the focus of any ellipsoid of the Use of The Polygonal Mirror Scanner mirror is corresponding with the center of plane of scanning motion mirror
The focus of spherical surface is also corresponding with the center of the speculum simultaneously.
4. according to claim 1-3 any one of them devices, which is characterized in that
The plane of scanning motion mirror is fixed relative to described device, and the terahertz imaging device is integrally swept perpendicular to the polyhedron
It retouches direction to be rotated, be scanned with treating the vertical direction in Use of The Polygonal Mirror Scanner scarnning mirror direction of test object.
5. device according to claim 4, which is characterized in that described device further includes：Follow module；
It is described that module is followed integrally to follow the object under test to move for controlling the terahertz imaging device so that scanning is flat
Face mirror is opposite with the object to be tested.
6. device according to claim 5, which is characterized in that described device further includes：It is imaged adjusting apparatus；
The imaging adjusting apparatus is used for according to the object to be tested at a distance from the terahertz imaging device, described in adjustment
The imaging size of terahertz imaging device.
7. device according to claim 6, which is characterized in that described device further includes：Reflection unit；
The reflection unit is arranged in the object under test in the another side of the plane of scanning motion mirror；
The reflection unit is used to the THz wave of the object under test backside reflection reflexing to the plane of scanning motion mirror.
8. according to claim 1-3 any one of them devices, which is characterized in that described device further includes：Protecting window；
The protecting window is arranged outside the plane of scanning motion mirror, and the protecting window is used to prevent dust from entering described device,
And the plane of scanning motion mirror is made to pass through the THz wave that the protecting window receives the object reflection to be tested.
9. according to claim 1-3 any one of them devices, which is characterized in that described device further includes：Terahertz emission source；
The terahertz emission source is used to irradiate the object to be tested by the THz wave of 0.1THz-10THz.
10. a kind of safety check instrument, which is characterized in that including M such as claim 1-9 any one of them terahertz imaging devices,
The M is positive integer.
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| CN201721530905.5U CN207663078U (en) | 2017-11-16 | 2017-11-16 | Terahertz imaging device and safety check instrument |
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| CN201721530905.5U CN207663078U (en) | 2017-11-16 | 2017-11-16 | Terahertz imaging device and safety check instrument |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109001836A (en) * | 2018-09-03 | 2018-12-14 | 苏州耶拿微电子有限公司 | Terahertz human body security check system |
| CN109297932A (en) * | 2018-08-29 | 2019-02-01 | 北京遥感设备研究所 | A kind of quasi-optical servo scarnning mirror continuous wave reflection imaging system of Terahertz |
-
2017
- 2017-11-16 CN CN201721530905.5U patent/CN207663078U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109297932A (en) * | 2018-08-29 | 2019-02-01 | 北京遥感设备研究所 | A kind of quasi-optical servo scarnning mirror continuous wave reflection imaging system of Terahertz |
| CN109001836A (en) * | 2018-09-03 | 2018-12-14 | 苏州耶拿微电子有限公司 | Terahertz human body security check system |
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