CN102023144B - Reflective terahertz (THz) wave real-time imaging scanning device - Google Patents
Reflective terahertz (THz) wave real-time imaging scanning device Download PDFInfo
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- CN102023144B CN102023144B CN 201010299904 CN201010299904A CN102023144B CN 102023144 B CN102023144 B CN 102023144B CN 201010299904 CN201010299904 CN 201010299904 CN 201010299904 A CN201010299904 A CN 201010299904A CN 102023144 B CN102023144 B CN 102023144B
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Abstract
The invention discloses a reflective terahertz (THz) wave real-time imaging scanning device which comprises a polyhedral rotary drum, a THz-wave concave reflector, a THz-wave detector, a preamplifier, a data acquisition card, a camera, an image acquisition card, an imaging unit and a display unit, wherein, the polyhedral rotary drum rotates a rotating shaft of the polyhedral rotary drum, swings back and forth along a swing axle and reflects the THz-wave radiated and/or reflected by a target to be scanned on the THz-wave concave reflector; the THz-wave concave reflector is used for gathering the THz-wave on the THz-wave detector; the THz-wave detector is used for converting the THz-wave into a voltage signal; the preamplifier is used for filtering and amplifying the voltage signal; the data acquisition card is used for carrying out analog/digital (A/D) conversion and data acquisition on the output signal of the preamplifier so as to obtain a digital signal; the camera is used for obtaining an optical image of the target to be scanned; the image acquisition card is used for acquiring the image so as to obtain a digital image signal; and the imaging unit is used for obtaining a THz image of the target to be scanned as well as a reverse image and an optical image of the THz image according to the digital signal and the digital image signal, and sending the images to the display unit for partition display at the same time.
Description
Technical field
The present invention relates to THz wave Image Acquisition and process field, in particular to a kind of reflective THz wave real time imagery scanister.
Background technology
Terahertz (Terahertz, THz) ripple is commonly referred to as frequency and is in the electromagnetic wave between 0.1THz～10THz (wavelength is at 3mm～30 μ m), between microwave and infrared between.THz wave has very strong penetration power to materials such as plastics, the scraps of paper, textile and leathers, and these materials can hinder visible light and ultrared propagation fully; THz wave has the wavelength shorter than millimeter wave, and this makes to have higher spatial resolution through the image that THz wave became; The photon energy of 1THz is merely 4.1meV, compares with X ray, and it can not cause ionization damage to biological tissue.In addition, the not outside radiated electromagnetic wave of passive type terahertz imaging has high concealment performance and security.It is thus clear that the passive type imaging technique might become a kind of novel safety check technology, can form effective complementation with traditional safety check means.
At present; Because the detector of terahertz wave band receives the restriction of processing technology; It is extremely expensive not only to make difficulty but also cost; So terahertz imaging can't reach picture CCD (Charge-coupled Device, charge coupled cell) camera or the flat array that kind of infrared Jiao forms two dimensional image easily.Therefore, most of terahertz imagings adopt the scanning imagery pattern.In scanning imagery, because the mechanical scanning imagery of pointwise need take a long time, this has limited its practicality in safety check; And adopt 2-D vibration mirror to carry out scanning imagery, though can improve sweep velocity, the requirement for the required high resolving power of safety check, big visual field, fast imaging exists bigger difficulty in implementation procedure.
Summary of the invention
The present invention provides a kind of reflective THz wave real time imagery scanister, in order to satisfy the requirement of safety check middle high-resolution, big visual field, fast imaging.
The invention provides a kind of reflective THz wave real time imagery scanister; This device comprises: polyhedron rotary drum, THz wave concave mirror, terahertz wave detector, prime amplifier, data collecting card, camera, image pick-up card, image-generating unit and display unit; Wherein, The polyhedron rotary drum rotates around its turning axle, and simultaneously along the axis of swing reciprocally swinging, is used for the THz wave of target emanation to be scanned and/or reflection is reflexed to the THz wave concave mirror; The THz wave concave mirror is used for the THz wave that scanning obtains is converged to terahertz wave detector; Terahertz wave detector is used for converting the THz wave that detects into voltage signal; Prime amplifier is used for voltage signal is carried out filtering, amplification; Data collecting card is used for that output signal to prime amplifier carries out the A/D conversion and data acquisition obtains digital signal; Camera is used to obtain the optical imagery of target to be scanned; Image pick-up card is used for image is collected data image signal; Image-generating unit is used for obtaining the Terahertz image of target to be scanned, the inverse video and the optical imagery of Terahertz image according to digital signal and data image signal, and the inverse video of Terahertz image, Terahertz image and optical imagery are sent to display unit carry out subregion and show simultaneously.
The foregoing description carries out two-dimensional scan through the polyhedron rotary drum in the horizontal and vertical scan objects of treating; And adopt camera to obtain the optical imagery of target to be scanned; And then obtain the Terahertz image that resolution is higher, the visual field is bigger, the inverse video and the optical imagery of Terahertz image quickly; Satisfy the demand of safety check, reduced cost, overcome the problem that exists in the prior art.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the front view of first embodiment of the invention;
Fig. 2 is the structure cut-open view of pentahedron rotary drum among Fig. 1 embodiment;
Fig. 3 is the front view of second embodiment of the invention;
Fig. 4 is the front view of third embodiment of the invention.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not paying the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Reflective according to an embodiment of the invention THz wave real time imagery scanister is used for the THz wave real time scan imaging of target to be measured, and this device comprises sweep test and image acquisition section.Sweep test comprises: window, be positioned at target to be scanned after, to get into reflective THz wave real time imagery scanister inner in order to block parasitic light, dust etc.; The polyhedron rotary drum is located on the light path behind the window, in order to horizontal and vertical two-dimensional scan target to be scanned; The Terahertz concave mirror is on the light path behind the polyhedron rotary drum of position, to converge THz wave; Terahertz wave detector is positioned on the light path behind the Terahertz concave mirror, receives the target emanation to be scanned that scanning obtains and/or the THz wave of reflection.Image acquisition section comprises: prime amplifier, be connected with the output port of terahertz detector, and carry out processing such as filtering, amplification in order to the signal that terahertz detector is exported; Data collecting card is installed in computer-internal, in order under the control of computing machine, the output signal from prime amplifier carried out operations such as A/D conversion, data acquisition; Camera (like the CCD camera) is positioned at by the polyhedron rotary drum, is used to obtain the optical imagery of target to be scanned; Image pick-up card is installed in computer-internal, and the optical image signal that is used under the control of computing machine, camera being obtained is gathered, and obtains data image signal; Image-generating unit; Be used for obtaining the Terahertz image of target to be scanned, the inverse video and the optical imagery of Terahertz image, and on display, be divided into three zones and show three width of cloth realtime graphics simultaneously: the inverse video of the optical imagery of imaging region, Terahertz image and Terahertz image according to digital signal and data image signal.
In an embodiment of the present invention, the direction of the turning axle of polyhedron rotary drum can be for being parallel to horizontal direction, and its axis of swing becomes the angle (as 45 °) of setting perpendicular to turning axle and with vertical direction; Also can axis of swing be parallel to horizontal direction, turning axle becomes the angle (as 45 °) of setting perpendicular to axis of swing and with vertical direction.
Fig. 1 is the front view of first embodiment of the invention; Light path with the THz wave of glancing incidence is the example explanation; The polyhedron rotary drum is a pentahedron rotary drum in the present embodiment; The turning axle and the surface level of this pentahedron rotary drum 3 are in a parallel set, and its axis of swing becomes the angle of setting perpendicular to turning axle and with vertical direction, and target 1 to be scanned places the place ahead of this pentahedron rotary drum 3.
Terahertz concave spherical mirror 4 is located on the light path behind the pentahedron rotary drum 3; Be positioned at the below of the scanning plane of pentahedron rotary drum 3; And the center of Terahertz concave spherical mirror 4 overlaps with the center of the scanning plane of described pentahedron rotary drum 3, can arrive on the Terahertz concave spherical mirror 4 from the THz wave that the scanning plane (rotating to the face at the rear of target to be scanned) of pentahedron rotary drum 3 is reflected guaranteeing.Terahertz concave spherical mirror 4 is used for the THz wave that scanning obtains is converged to terahertz wave detector 5.
During scanning, pentahedron rotary drum 3 rotates around its turning axle, and its turning axle can be reflected on the Terahertz concave spherical mirror 4 with the THz wave of assurance from target emanation to be measured from the horizontal by laterally arranging.Each face of pentahedron rotary drum 3 forwards the rear of target 1 to be scanned to, and the vertical direction that all can treat scan objects 1 carries out the quick scanning of one dimension, and pentahedron rotary drum 3 revolutions moved for 1 week, can realize treating the multiple row scanning of scan objects 1, and the line number of scanning is 5 row.
Pentahedron rotary drum 3 is when its turning axle rotates; Also carry out reciprocally swinging around its axis of swing; Its axis of swing becomes the angle of setting perpendicular to turning axle and with vertical direction; Promptly change the angle at pentahedron rotary drum 3 and angle that vertical plane becomes, the analyzing spot position in the horizontal direction on the target to be measured is changed, thereby realize horizontal scanning.Let pentahedron rotary drum 3 rotation and swing the speed that synchronous continuous motion can improve scanning, can make whole motion steady, realize two dimensional surface scanning.The CCD camera is arranged near pentahedron rotary drum (not shown in Fig. 1), is used to obtain the optical imagery of target 1 to be scanned.
The terahertz signal that scans converts voltage signal to through terahertz wave detector 5; Processing such as the filtering of this signal through prime amplifier, amplification are passed to the data collecting card that is contained in computer-internal, then under the control of computing machine; Synchronizing signal trigger data acquisition card through sweep test; Signal to from prime amplifier is gathered, and splices reconstruct through image-generating unit then and shows that the two-dimensional scan of accomplishing complete target to be scanned 1 forms images.Image pick-up card is installed in computer-internal, and the picture signal that is used under the control of computing machine, camera being obtained is gathered, and obtains data image signal; Image-generating unit is used for obtaining the THz wave image of target to be scanned, the inverse video and the optical imagery of Terahertz image according to digital signal and data image signal.Be divided into three zones on the display and show three width of cloth realtime graphics simultaneously: imaging region Terahertz image, the inverse video of Terahertz image and optical imagery.
The polyhedron rotary drum can be hollow honeycomb shape structure in the foregoing description, and its material can be aluminium alloy.
Fig. 2 is the structure cut-open view of pentahedron rotary drum among Fig. 1 embodiment.As shown in Figure 2,1 is the turning axle of pentahedron rotary drum, and 2 is the axis of swing of pentahedron rotary drum, and 3 is pentahedron rotary drum main body, and 4 is the shell of pentahedron rotary drum.
Each parts in the described reflective Terahertz real time imagery device of present embodiment all work under the reflective-mode; Therefore embodiments of the invention can also be applied to the real time scan imaging of other any wave band except the real time scan imaging that can be applied to terahertz wave band.
For example, embodiments of the invention can be applied to mm-wave imaging.When mm-wave imaging, just can carry out the real time scan imaging to target to be measured through terahertz wave detector being changed into the millimeter wave detector that works in millimeter wave band.
Embodiments of the invention can be applied to the imaging and passive imaging pattern, also can be applied to the Active Imaging pattern.When the imaging and passive imaging pattern, the reflective THz wave real time imagery scanister of the embodiment of the invention directly receives the THz wave of target to be scanned self radiation, carries out the real time scan imaging.
When the Active Imaging pattern, need be by external source to target 1 emission THz wave to be scanned, imaging device receives the THz wave of target 1 reflection to be scanned.In the first embodiment of the present invention, this external light source can be arranged at the side of polyhedron rotary drum 3, with the light source of broad the illumination of waiting to sweep objective body 1 is provided.Perhaps; The THz wave transceiver that THz wave can launched and receive to utilization replaces terahertz wave detector 5; Because light path is reversible, the THz wave that the THz wave transceiver sends arrives target 1 to be scanned via sweep test, and the exterior lighting of target 1 to be scanned is provided.Thus, embodiments of the invention can work in initiatively or the imaging and passive imaging pattern, and range of application is more widely arranged.
Employed Terahertz concave mirror is the sphere metallic mirror among first embodiment.Adopted ellipsoidal mirror that the THz wave of target institute's radiation to be scanned or reflection is converged on the terahertz wave detector in the present embodiment, the analyzing spot on the target to be measured and terahertz detector have been arranged at two along of ellipsoid spherical reflector respectively.
Fig. 3 is the front view of second embodiment of the invention.Light path with the THz wave of glancing incidence is that example describes.The polyhedron rotary drum is a pentahedron rotary drum in the present embodiment, and the turning axle and the surface level of this pentahedron rotary drum 3 are in a parallel set, and its axis of swing becomes the angle of setting perpendicular to turning axle and with vertical direction, and target 1 to be scanned places the place ahead of this pentahedron rotary drum.
Terahertz ellipsoidal mirror 4 is located on the light path behind the pentahedron rotary drum 3; Terahertz ellipsoidal mirror 4 is positioned at the below of the scanning plane of pentahedron rotary drum; And the center of Terahertz ellipsoidal mirror 4 overlaps with the center of the scanning plane of pentahedron rotary drum 3; Through the position of Terahertz ellipsoidal mirror 4 and terahertz wave detector 5 is set; Make the analyzing spot on the target to be scanned be positioned on the focus of Terahertz ellipsoidal mirror 4; Terahertz wave detector 5 is positioned at another along of Terahertz ellipsoidal mirror 4, can arrive on the terahertz wave detector 5 through converging of Terahertz ellipsoidal mirror 4 with this target institute's radiation to be scanned that guarantees to be obtained by pentahedron rotary drum 3 scanning and/or the THz wave of reflection.Terahertz ellipsoidal mirror 4 is used for THz wave is converged to terahertz wave detector 5.
During scanning, pentahedron rotary drum 3 rotates around its turning axle, and its turning axle can be reflected on the Terahertz catoptron 4 with the THz wave of assurance from target emanation to be measured from the horizontal by laterally arranging.Each face of pentahedron rotary drum 3 forwards the rear of target 1 to be scanned to, and the vertical direction that all can treat scan objects 1 carries out the quick scanning of one dimension, and pentahedron rotary drum 3 revolutions moved for 1 week, can realize treating the multiple row scanning of scan objects 1, and the line number of scanning is 5 row.
Pentahedron rotary drum 3 is when its turning axle rotates; Also carry out reciprocally swinging around its axis of swing; Its axis of swing becomes the angle of setting perpendicular to turning axle and with vertical direction; Promptly change the angle at pentahedron rotary drum 3 and angle that vertical plane becomes, the analyzing spot position in the horizontal direction on the target to be scanned is changed, thereby realize horizontal scanning.Let pentahedron rotary drum 3 rotation and swing the speed that synchronous continuous motion can improve scanning, can make whole motion steady, realize treating the two dimensional surface scanning of scan objects.The CCD camera is arranged near pentahedron rotary drum (not shown in Fig. 3), is used to obtain the image of target 1 to be scanned.
The terahertz signal that scanning obtains converts voltage signal to through terahertz wave detector 5; Processing such as the filtering of this signal through prime amplifier, amplification are passed to the data collecting card that is contained in computer-internal, then under the control of computing machine; Synchronizing signal trigger data acquisition card through sweep test; Signal to from prime amplifier is gathered, and splices reconstruct through computing machine then and shows that the two-dimensional scan of accomplishing complete target to be scanned 1 forms images.Image pick-up card is installed in computer-internal, and the picture signal that is used under the control of computing machine, camera being obtained is gathered, and obtains data image signal.Image-generating unit is used for obtaining the Terahertz image of target to be scanned, the inverse video and the optical imagery of Terahertz image according to digital signal and data image signal.Be divided into three zones on the display and show three width of cloth realtime graphics simultaneously: imaging region Terahertz image, the inverse video of Terahertz image and optical imagery.
Each parts in the reflective Terahertz real time imagery scanister of present embodiment all work under the reflective-mode; Therefore the present invention can also be applied to the real time scan imaging of other any wave band except the real time scan imaging that can be applied to terahertz wave band.
For example, embodiments of the invention can be applied to mm-wave imaging.When mm-wave imaging, just can carry out the imaging of millimeter wave real time scan to target to be measured through terahertz wave detector being changed into the millimeter wave detector that works in millimeter wave band.
The present invention can be applied to the imaging and passive imaging pattern, can also be applied to the Active Imaging pattern.When the imaging and passive imaging pattern, the reflective THz wave real time scan imaging device of the embodiment of the invention directly receives the THz wave of target to be scanned self radiation, carries out the real time scan imaging.
When the Active Imaging pattern, need be by external source to target emission THz wave to be scanned, imaging device receives the THz wave of target reflection to be scanned.In the second embodiment of the present invention, this external light source can be arranged at the side of polyhedron rotary drum 3, and the illumination of target to be scanned is provided with the light source of broad.Perhaps; The THz wave transceiver that THz wave can launched and receive to utilization replaces terahertz wave detector; Because light path is reversible, the THz wave that the THz wave transceiver sends arrives target to be scanned via sweep test, and the exterior lighting of target to be scanned is provided.Thus, embodiments of the invention can work in initiatively or the imaging and passive imaging pattern, and range of application is more widely arranged.
Employed Terahertz concave mirror is the sphere metallic mirror among first embodiment.Adopted ellipsoidal mirror that the THz wave of target institute's radiation to be scanned or reflection is converged on the terahertz wave detector in the present embodiment, the analyzing spot on the target to be measured and terahertz detector have been placed two along of ellipsoidal mirror respectively.Adopt the Terahertz free-form surface mirror to come the THz wave of target institute's radiation and/or reflection is converged in the present embodiment, for the structural design and the installation of total system brought great facility.
Fig. 4 is the front view of third embodiment of the invention, is the example explanation with the light path of the THz wave of glancing incidence.The polyhedron rotary drum is a pentahedron rotary drum in the present embodiment, and the turning axle and the surface level of this pentahedron rotary drum 3 are in a parallel set, and target 1 to be scanned places the place ahead of this pentahedron rotary drum 3.
Terahertz free-form surface mirror 4 is located on the light path behind the pentahedron rotary drum 3; Terahertz free face catoptron 4 is positioned at the below of the scanning plane of pentahedron rotary drum 3; And the center of Terahertz free face catoptron 4 overlaps with the center of the scanning plane of described pentahedron rotary drum 3, can arrive on the Terahertz free face catoptron 4 with the THz wave that scanning plane was reflected of assurance from pentahedron rotary drum 3.Terahertz free face catoptron 4 is used for THz wave is converged to terahertz wave detector 5.
During scanning, pentahedron rotary drum 3 rotates around its turning axle, and its turning axle can be reflected on the Terahertz free-form surface mirror 4 with the THz wave of assurance from target institute's radiation to be measured and/or reflection from the horizontal by laterally arranging.Each face of pentahedron rotary drum 3 forwards the rear of target 1 to be scanned to, and the vertical direction that all can treat scan objects 1 carries out the quick scanning of one dimension, and pentahedron rotary drum 3 revolutions moved for 1 week, can realize treating the multiple row scanning of scan objects, and the line number of scanning is 5 row.
Pentahedron rotary drum 3 is when its turning axle rotates; Also carry out reciprocally swinging around its reciprocally swinging axle; Its axis of swing becomes the angle of setting perpendicular to turning axle and with vertical direction; Promptly change the angle at pentahedron rotary drum 3 and angle that vertical plane becomes, the analyzing spot position in the horizontal direction on the target to be scanned is changed, thereby realize horizontal scanning.Let the pentahedron rotary drum rotation and swing the speed that synchronous continuous motion can improve scanning, can make whole motion steady, realize treating the two dimensional surface scanning of scan objects.The CCD camera is arranged near pentahedron rotary drum (not shown in Fig. 4), is used to obtain the image of target 1 to be scanned.
The terahertz signal that scans converts voltage signal to through terahertz wave detector 5; Processing such as the filtering of this voltage signal through prime amplifier, amplification are passed to the data collecting card that is contained in computer-internal, then under the control of computing machine; Synchronizing signal trigger data acquisition card through scanner; Signal to from prime amplifier is gathered, and splices reconstruct through image-generating unit then and shows that the two-dimensional scan of accomplishing complete target to be scanned forms images.Image pick-up card is installed in computer-internal, and the optical image signal that is used under the control of computing machine, camera being obtained is gathered, and obtains data image signal; Image-generating unit is used for obtaining the THz wave image of target to be scanned, the inverse video and the optical imagery of Terahertz image according to digital signal and data image signal.Be divided into three zones on the display and show three width of cloth realtime graphics simultaneously: the inverse video of the optical imagery of imaging region, Terahertz image and Terahertz image.
Each parts in the present embodiment in the reflective Terahertz real time imagery scanister all work under the reflective-mode; Therefore embodiments of the invention can also be applied to the real time scan imaging of other any wave band except the real time scan imaging that can be applied to terahertz wave band.
For example, embodiments of the invention can be applied to mm-wave imaging.When mm-wave imaging,, just can carry out the real time scan imaging to target to be measured through terahertz wave detector being changed into the millimeter wave detector that works in millimeter wave band.
Embodiments of the invention can be applied to the imaging and passive imaging pattern, can also be applied to the Active Imaging pattern.When the imaging and passive imaging pattern, reflective THz wave real time imagery scanister of the present invention directly receives the THz wave of target to be scanned self radiation, carries out the real time scan imaging.
When the Active Imaging pattern, need be by external source to target 1 emission THz wave to be scanned, imaging device receives the THz wave of target 1 reflection to be scanned.In the third embodiment of the present invention, this external light source can be arranged at a side of polyhedron rotary drum 3, and the illumination of target 1 to be scanned is provided with the light source of broad.Perhaps; The THz wave transceiver that THz wave can launched and receive to utilization replaces terahertz wave detector 5; Because light path is reversible, the THz wave that the THz wave transceiver sends arrives target 1 to be scanned via sweep test, and the exterior lighting of target 1 to be scanned is provided.Thus, the present invention can work in initiatively or the imaging and passive imaging pattern, and range of application is more widely arranged.
One of ordinary skill in the art will appreciate that: accompanying drawing is the synoptic diagram of an embodiment, and module in the accompanying drawing or flow process might not be that embodiment of the present invention is necessary.
One of ordinary skill in the art will appreciate that: the module in the device among the embodiment can be described according to embodiment and be distributed in the device of embodiment, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of the foregoing description can be merged into a module, also can further split into a plurality of submodules.
The invention described above embodiment sequence number is not represented the quality of embodiment just to description.
What should explain at last is: above embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although with reference to previous embodiment the present invention has been carried out detailed explanation, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that previous embodiment is put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the spirit and the scope of the essence disengaging embodiment of the invention technical scheme of relevant art scheme.
Claims (7)
1. reflective THz wave real time imagery scanister; It is characterized in that; Comprise: polyhedron rotary drum, THz wave concave mirror, terahertz wave detector, prime amplifier, data collecting card, camera, image pick-up card, image-generating unit and display unit, wherein
Said polyhedron rotary drum rotates around its turning axle, and simultaneously along the axis of swing reciprocally swinging, is used for the THz wave of target emanation to be scanned and/or reflection is reflexed to said THz wave concave mirror;
Said THz wave concave mirror is used for the target institute's radiation said to be measured that is obtained by said polyhedron rotary drum scanning and/or the THz wave of reflection are converged to said terahertz wave detector;
Said terahertz wave detector is used for converting the said THz wave that detects into voltage signal;
Said prime amplifier is used for said voltage signal is carried out filtering, amplification;
Said data collecting card is used for that output signal to said prime amplifier carries out the A/D conversion and data acquisition obtains digital signal;
Said camera is used to obtain the optical imagery of said target to be scanned;
Said image pick-up card is used for said optical imagery is collected data image signal;
Said image-generating unit; Be used for obtaining the Terahertz image of said target to be scanned, the inverse video and the optical imagery of Terahertz image, and the inverse video of said Terahertz image, said Terahertz image and said optical imagery are sent to said display unit carry out subregion and show simultaneously according to said digital signal and said data image signal.
2. reflective THz wave real time imagery scanister according to claim 1 is characterized in that, also comprises:
Window, be positioned at said target to be scanned after, be used to block parasitic light and dust and get into said reflective THz wave real time imagery scanister.
3. reflective THz wave real time imagery scanister according to claim 1 is characterized in that said polyhedron rotary drum is a hollow honeycomb shape structure, and the material of said polyhedron rotary drum is an aluminium alloy.
4. reflective THz wave real time imagery scanister according to claim 1 is characterized in that said axis of swing is parallel to horizontal direction, and said turning axle becomes the angle of setting perpendicular to said axis of swing and with vertical direction.
5. reflective THz wave real time imagery scanister according to claim 1 is characterized in that, said rotating shaft parallel is in horizontal direction, and said axis of swing becomes the angle of setting perpendicular to said turning axle and with vertical direction.
6. reflective THz wave real time imagery scanister according to claim 2 is characterized in that said Terahertz concave mirror is concave spherical mirror or ellipsoidal mirror or free-form surface mirror.
7. reflective THz wave real time imagery scanister according to claim 2 is characterized in that, replaces said terahertz wave detector with the THz wave transceiver, is used for emission and receives THz wave.
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| CN 201010299904 CN102023144B (en) | 2010-09-29 | 2010-09-29 | Reflective terahertz (THz) wave real-time imaging scanning device |
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| CN 201010299904 CN102023144B (en) | 2010-09-29 | 2010-09-29 | Reflective terahertz (THz) wave real-time imaging scanning device |
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| CN109870739B (en) * | 2018-12-29 | 2024-03-29 | 清华大学 | Millimeter wave/terahertz wave imaging apparatus |
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| CN109444975A (en) * | 2018-12-29 | 2019-03-08 | 清华大学 | Millimeter wave/THz wave imaging device |
| CN110146933A (en) * | 2019-05-23 | 2019-08-20 | 深圳市华讯方舟太赫兹科技有限公司 | Terahertz detection system and its detection method |
| CN110440920B (en) * | 2019-08-07 | 2021-03-02 | 北京环境特性研究所 | Swinging polarizer type polarization imaging measurement device and method |
| CN111273286B (en) * | 2020-01-21 | 2022-08-16 | 中国科学院电子学研究所 | Imaging device, method, electronic apparatus, and storage medium |
| CN114397243B (en) * | 2021-12-31 | 2024-03-29 | 北京无线电计量测试研究所 | Terahertz receiving and transmitting processing method and probe for near field test |
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| CN1940542A (en) * | 2006-09-27 | 2007-04-04 | 中国计量学院 | Fast terahertz imager with spectral characteristic and its method |
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| CN1940542A (en) * | 2006-09-27 | 2007-04-04 | 中国计量学院 | Fast terahertz imager with spectral characteristic and its method |
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