CN202013328U - Ray bundle scanning device for back scattering imaging - Google Patents
Ray bundle scanning device for back scattering imaging Download PDFInfo
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- CN202013328U CN202013328U CN2010207005145U CN201020700514U CN202013328U CN 202013328 U CN202013328 U CN 202013328U CN 2010207005145 U CN2010207005145 U CN 2010207005145U CN 201020700514 U CN201020700514 U CN 201020700514U CN 202013328 U CN202013328 U CN 202013328U
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Abstract
The utility model discloses a ray bundle scanning device for back scattering imaging, which comprises a radiation source, a fixed shielding plate and a rotating shielding plate, wherein the fixed shielding plate and the rotating shielding body are respectively arranged between the radiation source and an object to be scanned, the fixed shielding plate is fixed relative to the radiation source, and the rotating shielding body is rotatable relative to the fixed shielding plate; the fixed shielding plate is provided with a ray passing area which allows a ray bundle from the radiation source to penetrate the fixed shielding plate, the rotating shielding body is provided with a ray incidence area and a ray emergence area respectively, and in the process that the rotating shielding body scans in a rotating manner, the ray passing are of the fixed shielding plate as well as the ray incidence area and the ray emergence area of the rotating shielding body continuously cross so as to form a scanning collimating hole; and the ray passing area of the fixed shielding plate is a straight gap, rotating shielding body is a cylinder, and the ray incidence area and the ray emergence area are respectively a series of small scattering holes arranged along a spiral line. In addition, the utility model also discloses a ray bundle scanning method for the backing scattering imaging.
Description
Technical field
The utility model relates to the Application of Nuclear Technology field, and particularly the cannot-harm-detection device of people and object and method more particularly, relate to a kind of scanister and method that is used for back scattering imaging with beam.
Background technology
During Non-Destructive Testing and human detection are used, transmission of radiation imaging and ray back scattering imaging dual mode are arranged.Back scattering imaging is by using the beam scanning object, adopting the scattered signal of detector reception from the detected object scattering simultaneously, and is during data processing that scanning position and scattered signal point point is corresponding, thereby can obtain the dispersion image of relevant detected object.The parts of most critical are exactly to realize the flying-spot scanner mechanism of ray collimation for realizing two-dimensional scan in the back scattering imaging system.
Existing a kind of flying-spot scanner mechanism is that the rotating shield that has many collimating apertures rotates the scanning that realizes first dimension in the ray scanning covering of the fan, realizes the scanning of second dimension by rotation or translation ray scanning covering of the fan.For the first dimension scanning, ray is non-uniform speed scanning on the vertical plane object, sweep trace is the initiating terminal and terminal acceleration of scanning, can be on the geometry deformation basis further vertically enlarge scanning light spot, cause the vertical compression deformation that owing to scan speed change brings of imaging except that geometry deformation.When carrying out the scanning of second dimension, select translation ray scanning covering of the fan then to need translation ray generating means, rotating shield, physical construction can be very complicated; Selecting rotary irradiating line sweep covering of the fan then to need to overcome the moment of inertia of rotating shield, is a huge test to the drive unit of rotation and the bearing of rotating shield.
Existing another kind of flying-spot scanner mechanism is made up of the fixed mask plate and the rotating shield that are positioned at radiographic source the place ahead.The fixed mask plate is fixed with respect to radiographic source, and rotating shield is rotatable with respect to the fixed mask plate.Fixed mask plate and rotating shield are respectively arranged with rectilinear slot and helix slit.In rotating shield rotation sweep process, intersect continuously to constitute the scanning collimating aperture in rectilinear slot and helix slit, and the scanning collimating aperture keeps reservation shape with respect to radiographic source all the time, remains unchanged so that pass the cross sectional shape of the beam of scanning collimating aperture.
In this kind scheme, because rotating shield is provided with the helix slit, the shape and the size of scanning collimating aperture are easy to control, and simultaneously, the alpha ray shield ability needs further to improve and strengthen.
In addition, rotating shield will precisely be processed into the helix slit, and this has proposed very high requirement to processing technology.
In addition, rotating shield needs to be rotated in scanning process, thereby needs to consider the problem of mechanism's weight and moment of inertia.
Correspondingly, be necessary to provide a kind of scanister novel, improved back scattering imaging usefulness beam, it can satisfy at least one aspect of above-mentioned needs.
The utility model content
Given this, the purpose of this utility model is intended to solve at least one aspect of the above-mentioned problems in the prior art and defective.
Correspondingly, one of the purpose of this utility model is to provide scanister and the method for a kind of improved back scattering imaging with beam, wherein scans the shape of collimating aperture and size so that even flying spot to be provided.
Another purpose of the present utility model is to provide scanister and the method for improved back scattering imaging with beam, the reliability that it can improve the processing characteristics of equipment and improve equipment operation.
According to an aspect of the present utility model, it provides the scanister of a kind of back scattering imaging with beam, comprising: radiation source; Lay respectively at radiation source and be scanned fixed mask plate and rotating shield between the object, wherein said fixed mask plate is fixed with respect to radiation source, described rotating shield is rotatable with respect to the fixed mask plate, wherein: described fixed mask plate is provided with permission and passes the ray of described fixed mask plate from the beam of described radiation source by the zone, be respectively arranged with ray incident area and ray outgoing zone on the rotating shield, in rotating shield rotation sweep process, the ray of fixed mask plate intersects to constitute the scanning collimating aperture continuously by zone and the ray incident area and the ray outgoing zone of rotating shield, it is characterized in that: the ray of described fixed mask plate is rectilinear slot by the zone, described rotating shield is a right cylinder, and described ray incident area and described ray outgoing zone are respectively the series of discrete aperture that is provided with along helix.
Preferably, described fixed mask plate is arranged between described radiation source and the described rotating shield.
In one embodiment, back scattering imaging also comprises with the scanister of beam: control device, rotational speed by the control rotating shield is controlled the sweep velocity of beam, obtains the exit direction of beam by the rotational angle that detects rotating shield.
In one embodiment, described rotating shield comprises inside and outside nested a plurality of sleeves, wherein outermost layer and innermost layer sleeve are made of the material with certain rigidity and hardness respectively, are provided with the intermediate sleeve that at least one is made of radiation shielding material between described outermost layer and the innermost layer sleeve.
Particularly, described a plurality of sleeves are three sleeves, and wherein outermost layer and innermost layer sleeve are made of aluminium or steel respectively, are provided with an intermediate sleeve that is made of lead, lead-antimony alloy or tungsten between described outermost layer and the innermost layer sleeve.
Selectively, described discrete aperture be shaped as circular, square or oval.
In technique scheme, the shape and the size of the diverse location by the series of discrete aperture of control on the rotating shield, can control shape and the size of described scanning collimating aperture, pass shape and the size that the beam on the detected object appears in described scanning collimating aperture with control at diverse location.
Preferably, the rotation of described rotating shield is positioned on the plane of the common qualification of described rectilinear slot on described radiation source and the described fixed mask plate.
According on the other hand of the present utility model, it provides the scan method of a kind of back scattering imaging with beam, comprises step: the radiation source that the divergent-ray bundle is provided; Setting lays respectively at radiation source and is scanned fixed mask plate and rotating shield between the object, wherein said fixed mask plate is fixed with respect to radiation source, described rotating shield is rotatable with respect to the fixed mask plate, described fixed mask plate is provided with permission passes described fixed mask plate from the beam of described radiation source ray by the zone, is respectively arranged with ray incident area and ray outgoing zone on rotating shield; And rotate described rotating shield, so that the ray of described fixed mask plate intersects to constitute the scanning collimating aperture continuously by zone and the ray incident area and the ray outgoing zone of described rotating shield, it is characterized in that: the ray of described fixed mask plate is rectilinear slot by the zone, described rotating shield is a right cylinder, and described ray incident area and described ray outgoing zone are respectively the series of discrete aperture that is provided with along helix.
Preferably, this back scattering imaging also comprises step with the scan method of beam: the rotational speed by the control rotating shield is controlled the sweep velocity of beam, obtains the exit direction of beam by the rotational angle that detects rotating shield.
Above-mentioned not specific embodiment of the present utility model has the advantage and the effect of following one or more aspect at least:
1. by scanister and the method that novel " flying spot " forms structure that have in the utility model is provided, it has simplified the backward scattering Scan Architecture, can obtain good shield effectiveness simultaneously.
2. in a kind of embodiment example, scanning mechanism of the present utility model and method can realize the controlled scanning to target object, can make the backscatter images data fit design requirement of acquisition very easily according to the sampling of predetermined way realization to target object.For example, scanning mechanism of the present utility model and method can realize the uniform speed scanning to target object, can realize the uniform sampling to target object very easily, make not compression deformation longitudinally in the backscatter images of acquisition.
3. in addition, because in the utility model, when rotary irradiating line sweep covering of the fan scans to carry out second dimension, because ray scanning covering of the fan and rotating shield can rotate at grade, when rotary irradiating line sweep covering of the fan, can not change the angular momentum direction of rotating shield, therefore do not need to overcome the moment of inertia of rotating shield, be easy to realize the scanning of second dimension by rotary irradiating line sweep covering of the fan.
4. because in the utility model, described ray incident area and described ray outgoing zone are respectively the series of discrete aperture that is provided with along helix, by controlling the shape and the size of discrete aperture, the shape of gated sweep collimating aperture and size are to provide even flying spot effectively.
5. in addition, scanning mechanism of the present utility model has been considered current production technology problem, adopts the mode of a plurality of cylinder sockets, has not only alleviated the weight of scanning mechanism but also solved the problem of shielding ray; The mode that employing is punched on cylinder forms ray by the zone, has substituted the scheme of the helically twisted narrow slit of on extremely unmanageable cylinder in reality processing, has improved the processing characteristics of equipment significantly.
6. in addition, the scheme of the narrow slit helically twisted with respect to processing on cylinder, this programme has adopted the method for the through hole of a series of interruptions.From scanning result, the hot spot that finally is formed on the inspected object has become by continuous that sampling is interrupted, and can alleviate the radiation dose that inspected object is subjected to a certain extent.
7. in addition, because in the utility model, radiation source is not arranged on the inside of rotating shield, and this scanning mechanism mates mechanical interface on the X-ray machine of volume production can finish, and compact conformation does not need to redesign the shield of X-ray machine, has saved cost.
Description of drawings
Fig. 1 is the structural representation according to the backward scattering scanister of a kind of embodiment of the present utility model.
Fig. 2 is the cut-open view of the backward scattering scanister in the displayed map 1; And
Fig. 3 is the composition of the backward scattering scanister in the displayed map 1 and the decomposition diagram of position relation;
Fig. 4 be the backward scattering scanister among the displayed map 1-3 rotating shield The Nomenclature Composition and Structure of Complexes synoptic diagram; And
Fig. 5 is 4 to be enlarged diagrams of the hole shape in the ray incident of the backward scattering scanister among the displayed map 1-3 and outgoing zone.
Embodiment
Below by embodiment, and 1-5 in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.In instructions, same or analogous drawing reference numeral is indicated same or analogous parts.Following explanation to the utility model embodiment is intended to present general inventive concept of the present utility model is made an explanation with reference to accompanying drawing, and not should be understood to a kind of restriction of the present utility model.
Participate in accompanying drawing 1-3, it shows the scanister of using beam according to the back scattering imaging of a kind of specific embodiment of the present utility model, and it comprises: radiation source, for example X-ray machine; Lay respectively at radiation source 13 and be scanned object (not shown, leftward position among Fig. 2 for example) fixed mask plate 4 and rotating shield 1 between, wherein fixed mask plate 4 is fixed with respect to radiation source 13, and rotating shield 1 is rotatable with respect to fixed mask plate 4.Further, fixed mask plate 4 is provided with permission and passes through zone, for example longitudinal slot 5 among Fig. 1-3 from what the beam of radiation source 13 passed fixed mask plate 4.Be respectively arranged with ray incident area 3 on the rotating shield 1, the series of discrete aperture 32 that is provided with along helix among Fig. 1-5 (among the figure not mark) for example, with ray outgoing zone 2, the series of discrete aperture 22 that is provided with along helix 2 among Fig. 1-5 (among the figure not mark) for example, in rotating shield 1 rotation sweep process, the ray of fixed mask plate 4 intersects to constitute the scanning collimating aperture continuously by zone 5 and the ray incident area 3 and the ray outgoing zone 2 of rotating shield 1.In the above-described embodiments, fixed mask plate 4 is arranged between radiation source 13 and the rotating shield 1.
In the foregoing description of the present utility model, ray generator comprises ray generator housing 11 and the radiation source 13 that is contained in the ray generator housing 11.In said structure, radiation source 13 can be X-ray machine, gamma ray projector or isotope radiographic source etc.As shown in figs. 1 and 3, in a kind of specific embodiment, ray generator housing 11 is substantially rectangular parallelepiped cassette shapes, and it is provided with and makes collimation slit 31 outgoing from ray generator housing 11 of the radiation ray that sends from radiation source 13.The beam 14 that the target spot P of radiation source 13 launches passes collimation slit 31 and forms a ray covering of the fan, then through passing fixed mask plate 4 pass through regional, the longitudinal slot among the 1-3 5 for example; The ray incident area 3 of rotating shield 1, for example among Fig. 1-5 along series of discrete aperture 32 and ray outgoing zone 2 that helix is provided with, the series of discrete aperture 22 that is provided with along helix for example.By the longitudinal slot 5 that fixed mask plate 4 is set, the discrete aperture 32 of rotating shield 1 and the relative position relation of discrete aperture 22, so that in rotating shield 1 rotation sweep process, the ray of fixed mask plate 4 intersects to constitute the scanning collimating aperture continuously by discrete aperture 32 in the ray incident area 3 of zone 5 and rotating shield 1 and the discrete aperture in the ray outgoing zone 2 22.In other words, the discrete aperture 32 in the ray incident area 3 on the rotating shield 1, the discrete aperture 22 in the ray outgoing zone 2 and ray collimating aperture of the 5 common compositions of the vertical narrow slit on the fixed mask plate.Selectively, referring to Fig. 5, being shaped as of described discrete aperture 32,22 is circular, square or oval, is preferably circle.
As Figure 1-3, the ray of fixed mask plate 4 is a rectilinear slot by zone 5, and rotating shield 1 is a right cylinder, and ray incident area 3 and ray outgoing zone 2 are respectively the series of discrete aperture 32 and 22 that is provided with along helix.Specifically, referring to Fig. 2, any discrete aperture among the figure in ray incident area 3 and the ray outgoing zone 2, A and B point for example, do uniform circular motion along the face of cylinder of rotating shield 1 on the one hand, do rectilinear motion along the axial direction of rotating shield 1 according to the certain speed distribution on the other hand, thereby form specific right cylinder helix.In a kind of specific embodiment, the any point in ray incident area 3 and ray outgoing zone 2 for example A and B point among the figure, can do uniform circular motion along the face of cylinder of rotating shield 1 on the one hand, on the other hand along the radial direction of rotating shield 1 according to making linear uniform motion, thereby form constant speed right cylinder helix.
Referring to Fig. 2, after the A point of the target spot P of radiation source 13 and ray incident area 3 is determined, connect the beam 14 of the incidence point A point formation of the target spot P of radiation source 13 and ray incident area 3, can determine the eye point B on the ray outgoing zone 2.
Because constant speed right cylinder helix form is arranged in ray incident area 3 and ray outgoing zone 2, when rotating shield 1 at the uniform velocity rotates, move with the rotation of shielding rotary body 1 position of ray collimating aperture, emergent ray bundle 14 also moves thereupon, thereby the scanning collimating aperture is moved along rectilinear slot 5 continuously and smoothlies.
Though, in above-mentioned enforcement side example, constant speed right cylinder helix form is arranged in ray incident area 3 and ray outgoing zone 2, but the utility model is not limited in this, for example because the helix form of above-mentioned particular form can be arranged in ray incident area 3 and ray outgoing zone 2, promptly do uniform circular motion along the face of cylinder of rotating shield 1 on the one hand, do rectilinear motion along the axial direction of rotating shield 1 according to the certain speed distribution on the other hand, thereby form specific right cylinder helix.Correspondingly, when rotating shield 1 at the uniform velocity rotated, moved with the rotation of shielding rotary body 1 position of ray collimating aperture, and emergent ray bundle 14 also moves thereupon, thereby the scanning collimating aperture is moved according to predetermined velocity distribution along rectilinear slot 5.Thus, scanister of the present utility model can be realized the controlled scanning to target object, can realize target object is sampled according to predetermined way very easily, make the backscatter images data fit design requirement of acquisition, thereby the quality and the resolution of back scattering imaging have been improved, improve precision and efficient that backward scattering detects, can better satisfy different application demands.
Further, this scanister can also comprise the drive unit 6 that is used for driven in rotation shield 1 rotation, for example buncher etc.Referring to Fig. 4, in one embodiment, described rotating shield 1 comprises inside and outside nested a plurality of sleeves, wherein outermost layer and innermost layer sleeve are made of the material with certain rigidity and hardness respectively, are provided with the intermediate sleeve that at least one is made of radiation shielding material between described outermost layer and the innermost layer sleeve.In a kind of specific embodiment, as shown in Figure 4, it comprises three sleeves 101,102,103 (not marking among the figure), wherein outermost layer and innermost layer sleeve 101,102 are made of aluminium or steel respectively, are provided with an intermediate sleeve 102 that is made of lead, lead-antimony alloy or tungsten between described outermost layer and the innermost layer sleeve.
Particularly, in the above-described embodiments, referring to Fig. 1, this device can also comprise rotation code-disc readout device 7, is used to detect the position of rotation of rotating shield 1; Code-disc read output signal line 8, the information that is used for the position of rotation of the relevant rotating shield 1 that will detect is input to control device 10.Because the position of rotation of rotating shield 1 has determined the position of scanning collimating aperture,, can detect the position that the scanning collimating aperture forms by above-mentioned setting.As shown in Figure 1, control device 10 also links to each other with drive motor 6 by direct motor drive line 9, can further control the rotation of rotating shield.By the rotational speed of control rotating shield, can control the sweep velocity of beam, and, can obtain the exit direction of beam by detecting the rotational angle of rotating shield.Referring to Fig. 2, in one embodiment, the rotation L of rotating shield 1 can be positioned on the planes of the rectilinear slot 5 common qualifications on radiation source 13 and the fixed mask plate 4.
In technique scheme, the shape and the size of the diverse location by the series of discrete aperture 32,22 of control on the rotating shield, can control shape and the size of described scanning collimating aperture, pass shape and the size that the beam on the detected object appears in described scanning collimating aperture with control at diverse location.For example, be arranged in the size of discrete aperture 22 in discrete aperture 32, the ray outgoing zone 2 of rotating shield 1 vertical two extreme ray incident areas 3, what for example diameter can be with respect to the discrete aperture that is positioned at the longitudinal center position is smaller, is positioned at the scanning collimating aperture that the discrete aperture 32,22 in rotating shield 1 vertical two ends forms simultaneously and has a certain degree with respect to the scanning collimating aperture shape that is positioned at the longitudinal center position.By said structure, can guarantee that the ray collimating aperture aims at target spot all the time and keep unimpeded, and when diverse location, pass the cross sectional shape that the beam to the detected object appears in the scanning collimating aperture and remain unchanged.But, the utility model is not limited in this, for example by controlling the shape and the size of the diverse location of the discrete aperture 32 in the ray incident area 3, the discrete aperture 22 in the ray outgoing zone 2 on the rotating shield 1, can control shape and the size of described scanning collimating aperture at diverse location, correspondingly, can control and pass the shape that the beam to the detected object appears in described scanning collimating aperture and adapt to different scanning demands with size.
Referring to Fig. 3, ray generator housing 11 can also link to each other with fixed mask plate 4 by shroud sleeve 12, to guarantee the shielding of ray.From above-mentioned setting as can be seen, radiation source 13 is not arranged on the inside of rotating shield 1, and be arranged on the inside of ray generator housing 11, this scanning mechanism mates as the shroud sleeve 12 of mechanical interface on the X-ray machine of volume production and can finish, thereby make the compact conformation of scanister, do not need to redesign the shield of X-ray machine, saved cost.
Below in conjunction with accompanying drawing above-mentioned back scattering imaging according to the present invention is carried out brief description with the scan method of beam:
Referring to Fig. 1-3,, comprise step: the radiation source 13 that divergent-ray bundle 14 is provided according to the back scattering imaging of the specific embodiment of the present invention scan method with beam; Setting lays respectively at radiation source 13 and is scanned fixed mask plate 4 and rotating shield 1 between the object, wherein fixed mask plate 4 is fixed with respect to radiation source, rotating shield 1 is rotatable with respect to fixed mask plate 4, fixed mask plate 4 is provided with permission passes fixed mask plate 4 from the beam 14 of radiation source 13 ray by the zone, is respectively arranged with ray incident area 3 and ray outgoing zone 2 on rotating shield 1; And rotate described rotating shield 1, so that the ray of fixed mask plate 4 intersects to constitute the scanning collimating aperture continuously by zone 5 and the ray incident area 3 and the ray outgoing zone 2 of rotating shield 1, wherein, the ray of described fixed mask plate 4 is a rectilinear slot 5 by the zone, described rotating shield 1 is a right cylinder, and described ray incident area 3 and described ray outgoing zone 2 are respectively the series of discrete aperture 32,22 that is provided with along helix.
In above-mentioned scanning process, when rotating shield 1 at the uniform velocity rotates, can make scanning collimating aperture moving along rectilinear slot 5 continuous controllable speed.
Referring to Fig. 1, in scanning process, the current state that control device 10 can be read rotating shield 1 by rotation code-disc readout device 7, code-disc read output signal line 8, and then the position of definite current ray collimating aperture, based on the detection of position, can further obtain the exit direction of beam 14 to the scanning collimating aperture.Further, by the scanning collimating aperture is set, so that it keeps reservation shape with respect to radiation source 13 all the time, thereby pass the cross sectional shape maintenance reservation shape that the beam 14 on the detected object appears in the scanning collimating aperture, to satisfy the demand of different scanning operation.
Though some embodiment of this present general inventive concept are shown and illustrate, those skilled in the art will appreciate that, under the situation of principle that does not deviate from this present general inventive concept and spirit, can make a change these embodiment, scope of the present utility model limits with claim and their equivalent.
Claims (7)
1. a back scattering imaging comprises with the scanister of beam:
Radiation source;
Lay respectively at radiation source and be scanned fixed mask plate and rotating shield between the object, wherein said fixed mask plate is fixed with respect to radiation source, and described rotating shield is rotatable with respect to the fixed mask plate, wherein:
Described fixed mask plate is provided with permission passes described fixed mask plate from the beam of described radiation source ray by the zone,
Be respectively arranged with ray incident area and ray outgoing zone on the rotating shield, in rotating shield rotation sweep process, the ray of fixed mask plate intersects to constitute the scanning collimating aperture continuously by zone and the ray incident area and the ray outgoing zone of rotating shield, it is characterized in that:
The ray of described fixed mask plate is a rectilinear slot by the zone,
Described rotating shield is a right cylinder, and described ray incident area and described ray outgoing zone are respectively the series of discrete aperture that is provided with along helix.
2. the back scattering imaging according to claim 1 scanister of beam is characterized in that:
Described fixed mask plate is arranged between described radiation source and the described rotating shield.
3. the back scattering imaging according to claim 1 scanister of beam is characterized in that:
Described rotating shield comprises inside and outside nested a plurality of sleeves, wherein outermost layer and innermost layer sleeve are made of the material with certain rigidity and hardness respectively, are provided with the intermediate sleeve that at least one is made of radiation shielding material between described outermost layer and the innermost layer sleeve.
4. the back scattering imaging according to claim 3 scanister of beam is characterized in that:
Described a plurality of sleeve is three sleeves, and wherein outermost layer and innermost layer sleeve are made of aluminium or steel respectively, is provided with an intermediate sleeve that is made of lead, lead-antimony alloy or tungsten between described outermost layer and the innermost layer sleeve.
5. the back scattering imaging according to claim 4 scanister of beam is characterized in that:
Being shaped as of described discrete aperture is circular, square or oval.
6. the back scattering imaging according to claim 5 scanister of beam is characterized in that:
The shape and the size of the diverse location by the series of discrete aperture of control on the rotating shield, can control shape and the size of described scanning collimating aperture, pass shape and the size that the beam on the detected object appears in described scanning collimating aperture with control at diverse location.
7. use the scanister of beam according to any one described back scattering imaging among the claim 2-6, it is characterized in that:
The rotation of described rotating shield is positioned on the plane of the common qualification of described rectilinear slot on described radiation source and the described fixed mask plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010207005145U CN202013328U (en) | 2010-12-31 | 2010-12-31 | Ray bundle scanning device for back scattering imaging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010207005145U CN202013328U (en) | 2010-12-31 | 2010-12-31 | Ray bundle scanning device for back scattering imaging |
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| CN202013328U true CN202013328U (en) | 2011-10-19 |
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| CN2010207005145U Expired - Fee Related CN202013328U (en) | 2010-12-31 | 2010-12-31 | Ray bundle scanning device for back scattering imaging |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565110A (en) * | 2010-12-31 | 2012-07-11 | 同方威视技术股份有限公司 | Device and method for scanning ray bundles for backscatter imaging |
| WO2014101593A1 (en) * | 2012-12-27 | 2014-07-03 | 同方威视技术股份有限公司 | Human-body back scattering security check system |
| WO2017113834A1 (en) * | 2015-12-28 | 2017-07-06 | 清华大学 | Collimator and inspection system |
| CN109839394A (en) * | 2019-03-22 | 2019-06-04 | 中国原子能科学研究院 | Portable X-ray back scattering imaging system |
-
2010
- 2010-12-31 CN CN2010207005145U patent/CN202013328U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565110A (en) * | 2010-12-31 | 2012-07-11 | 同方威视技术股份有限公司 | Device and method for scanning ray bundles for backscatter imaging |
| US8983033B2 (en) | 2010-12-31 | 2015-03-17 | Nuctech Company Limited | Scanning device and method for back-scatter imaging with a radiation beam |
| CN102565110B (en) * | 2010-12-31 | 2015-04-01 | 同方威视技术股份有限公司 | Device and method for scanning ray bundles for backscatter imaging |
| WO2014101593A1 (en) * | 2012-12-27 | 2014-07-03 | 同方威视技术股份有限公司 | Human-body back scattering security check system |
| WO2017113834A1 (en) * | 2015-12-28 | 2017-07-06 | 清华大学 | Collimator and inspection system |
| US10658088B2 (en) | 2015-12-28 | 2020-05-19 | Tsinghua University | Collimator and inspection system having the same |
| CN109839394A (en) * | 2019-03-22 | 2019-06-04 | 中国原子能科学研究院 | Portable X-ray back scattering imaging system |
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