CN211426824U

CN211426824U - Collimating device and security inspection imaging equipment

Info

Publication number: CN211426824U
Application number: CN201922355226.4U
Authority: CN
Inventors: 丁光伟; 吴万龙; 沈宗俊; 桑斌; 曹硕; 孙玮淇
Original assignee: Nuctech Co Ltd
Current assignee: Nuctech Co Ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-09-04
Anticipated expiration: 2029-12-24

Abstract

A collimating device and a security imaging apparatus including the same are disclosed. The collimating device includes: a collimator configured to collimate at least two beams having a beam slit; and the shielding piece is arranged on the collimator and can be switched among a plurality of positions, the plurality of positions comprise at least two shielding positions, and the at least two shielding positions are respectively in one-to-one correspondence with the at least two beams, so that when the shielding piece is positioned at any one of the at least two shielding positions, the shielding piece shields the beams corresponding to the shielding positions. The collimating device moves the shielding piece between a plurality of shielding positions, so that a user can shield any beam current in the plurality of beam currents as required, and various requirements of the user are met.

Description

Collimating device and security inspection imaging equipment

Technical Field

The present disclosure relates to the field of inspection technologies, and in particular, to a collimator and a security imaging apparatus including the collimator.

Background

In the prior art, the scanning imaging of the double beams generally needs two independent sets of collimating devices or a set of collimating devices with double beam slits. Both methods can realize scanning imaging of double-beam current simultaneous outgoing beams, however, for example, on a human and object co-examination device or a double-view human transmission device, double-beam current separation outgoing beams are sometimes required or only any one of the beams is required to be outgoing during scanning. For example, for a human and object co-detection device, one beam is dedicated to detecting objects, and the other beam is dedicated to detecting human bodies. When detecting a human body, beam current of an object to be detected is required to be shielded in order to reduce the absorbed dose of the human body. When the double-visual-angle human body transmission equipment works, one beam is specially used for detecting the whole human body visual angle, and the other beam is specially used for detecting the chest and abdomen of the human body. The dual-view human transmission device generally has three working modes, namely detecting the whole body, detecting only the chest and abdomen and detecting the whole body and the chest and abdomen. In order to reduce the absorbed dose of the human body when only the chest and abdomen of the human body are detected, it is desirable to shield a beam dedicated to the detection of the human body.

SUMMERY OF THE UTILITY MODEL

An object of the present disclosure is to solve at least one aspect of the above problems and disadvantages in the related art.

According to an embodiment of an aspect of the present disclosure, there is provided a collimating apparatus including:

a collimator configured to collimate at least two beams having a beam slit; and

the shielding piece is installed on the collimator and can be switched among a plurality of positions, the positions comprise at least two shielding positions, and the at least two shielding positions are in one-to-one correspondence with the at least two beams, so that when the shielding piece is located at any one of the at least two shielding positions, the shielding piece shields the beams corresponding to the shielding positions.

In some embodiments, the at least two shielding positions include a first shielding position and a second shielding position, when the shielding member is located at the first shielding position, the shielding member shields the beam current corresponding to the first shielding position, and when the shielding member is located at the second shielding position, the shielding member shields the beam current corresponding to the second shielding position.

In some embodiments, the plurality of positions further includes a non-shielding position, and when the shielding member is in the non-shielding position, the shielding member does not shield any of the beams.

In some embodiments, the collimating device further comprises a position sensor for sensing the position of the shield.

In some embodiments, the collimating means further comprises drive means for driving the shutter in motion.

In some embodiments, the collimating device further comprises a controller connected to the position sensor and the driving device, respectively, to control an operating state of the driving device according to the position of the shutter sensed by the position sensor.

In some embodiments, the shutter switches between the plurality of positions in a rotational or linear motion.

In some embodiments, the collimator comprises a first collimator configured to collimate the at least two beams, and a second collimator configured to collimate the at least two beams collimated by the first collimator, the shield being mounted on the first or second collimator.

According to another aspect of the present disclosure, there is also provided a security imaging apparatus including: a beam emitter configured to emit at least two beams, and a collimating device as described above.

In some embodiments, the first collimating means is a beam guide box on which the shutter is mounted.

According to the collimating device and the security inspection imaging equipment comprising the same, the shielding piece is switched among a plurality of shielding positions, wherein the plurality of shielding positions are in one-to-one correspondence with the plurality of beams respectively, so that a user can shield any one of the plurality of beams as required, and various requirements of the user are met.

Drawings

Fig. 1 is a schematic structural diagram of a security imaging apparatus according to an exemplary embodiment of the present disclosure.

Fig. 2 is another structural schematic diagram of a security imaging apparatus according to an exemplary embodiment of the present disclosure.

Fig. 3 is a schematic view of the movement of a shutter of a collimating device of a security imaging apparatus according to the present disclosure.

Detailed Description

While the present disclosure will be fully described with reference to the accompanying drawings, which contain preferred embodiments of the disclosure, it is to be understood before this description that one of ordinary skill in the art can, of course, modify the utility model described herein while obtaining the technical effects of the present disclosure. Therefore, it should be understood that the foregoing description is a broad disclosure directed to persons of ordinary skill in the art, and that there is no intent to limit the exemplary embodiments described in this disclosure.

Furthermore, in the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in schematic form in order to simplify the drawing.

According to the general inventive concept of the present disclosure, there is provided a collimating apparatus including: a collimator configured to collimate at least two beams; the shielding piece is arranged on the collimator and can be switched among a plurality of positions, the plurality of positions comprise at least two shielding positions, and the at least two shielding positions are in one-to-one correspondence with the at least two beams respectively, so that when the shielding piece is located at any one of the at least two shielding positions, the shielding piece shields the beams corresponding to the shielding positions.

According to the collimating device disclosed herein, the shielding piece is switched between a plurality of shielding positions, wherein the plurality of shielding positions correspond to the plurality of beam currents one to one, so that a user can shield any one of the plurality of beam currents as required, thereby satisfying various requirements of the user.

In an exemplary embodiment, as shown in fig. 1 and 2, the security imaging apparatus includes, for example, a beam emitter 5 for emitting a beam (e.g., X-rays), wherein the beam emitter 5 may emit a first beam 1 and a second beam 8, the first beam 1 and the second beam 8 being emitted from a target point 6 of the beam emitter 5 and angled to form a beam slit, respectively.

As shown in fig. 1 to 3, the collimating device according to the present disclosure includes a first collimator 4 and a shutter 7. The first collimator 4 is configured to collimate a first beam 1 and a second beam 8. The shutter 7 is mounted on the first collimator 4 and can be switched between a plurality of positions, including two shutter positions: the first position A and the second position B of sheltering from shelter from, when the shielding piece 7 was located first position A of sheltering from, the shielding piece 7 sheltered from first stream 1 that the first position A of sheltering from corresponds, and when the shielding piece 7 was located the second position B of sheltering from, the shielding piece 7 sheltered from the second stream 8 that the position corresponds is sheltered from to the second.

It should be noted that, in some other embodiments of the present disclosure, more than two beams may be included, as long as a plurality of shielding positions correspond to a plurality of beams one to one, so that when the shielding element 7 is located at any one of the shielding positions, the beam corresponding to the shielding position may be shielded.

In an exemplary embodiment, as shown in fig. 3, the plurality of positions further includes a non-shielding position C, so that when the shield 7 is in the non-shielding position C, the shield 7 does not shield any one beam.

In an exemplary embodiment, as shown in fig. 1, the collimation arrangement further comprises a position sensor 2 for sensing the position of the shield 7, which position sensor 2 is mounted on the first collimator 4.

In an exemplary embodiment, as shown in fig. 1, the collimation device further comprises a driving device (not shown), such as a motor, for driving the shutter 7 in motion.

In an exemplary embodiment, as shown in fig. 1, the collimating device further comprises a controller (not shown) connected to the position sensor 2 and the driving means, respectively, for controlling the operating state of the driving means in dependence of the position of the shutter 7 sensed by the position sensor 2. Specifically, as shown in fig. 3, when the first beam 1 needs to be shielded, the driving device drives the shielding piece 7 to rotate to the first shielding position a, and when the position sensor 2 senses that the shielding piece 7 rotates to the first shielding position a, the driving device is controlled by the controller to stop working, and at this time, the shielding piece 7 completely shields the first beam 1. When needing to shelter from second line current 8, shelter from position B to the second through drive arrangement drive shielding piece 7 rotation, when position sensor 2 sensing shielding piece 7 rotation sheltered from position B to the second, through controller control drive arrangement stop work, at this moment, shielding piece 7 shelters from second line current 8 completely. When the first beam current 1 and the second beam current 8 do not need to be shielded, the driving device drives the shielding piece 7 to rotate to the non-shielding position C, at the moment, the shielding piece 7 does not shield the first beam current 1 and the second beam current 8, and the first beam current 1 and the second beam current 8 can work simultaneously.

In an exemplary embodiment, as shown in fig. 3, the shutter 7 is rotated in the direction D by the driving device to switch between a plurality of positions, however, it should be noted that in other embodiments of the present disclosure, the shutter 7 may be translated by the driving device (e.g., a linear driving device) to switch between a plurality of positions.

In an exemplary embodiment, as shown in fig. 1 and 2, the collimator includes a first collimator 4 and a second collimator 3 sequentially arranged along the exit direction of the beam, the first collimator 4 may be in the form of a beam guide box, for example, and configured to collimate the first beam 1 and the second beam 8, and the second collimator 3 is configured to further collimate the first beam 1 and the second beam 8 collimated by the first collimator 4. A shield 7 is located on the first collimator 4. It should be noted that in other embodiments of the present disclosure, the shield 7 may also be mounted on the second collimator 3, for example between the second collimator 3 and the detector, as will be appreciated by those skilled in the art.

According to another aspect of the present disclosure, there is also provided a security imaging apparatus comprising a beam emitter 5, a detector and a collimating device as described above. The beam emitter 5 may emit a first beam 1 and a second beam 8, the first beam 1 and the second beam 8 being emitted from a target 6 of the beam emitter 5, respectively, and being angled to form a beam slit.

In an exemplary embodiment, as shown in fig. 1 and 2, the shield 7 of the collimating device is mounted on the first collimator 4 and between the beam emitter 5 and the second collimator 3, it should be noted that in other embodiments of the present disclosure, the shield 7 may also be mounted on the second collimator 3, for example, between the second collimator 3 and the detector.

It will be appreciated by those skilled in the art that the embodiments described above are exemplary and can be modified by those skilled in the art, and that the structures described in the various embodiments can be freely combined without conflict in structure or principle.

Having described preferred embodiments of the present disclosure in detail, it will be apparent to those skilled in the art that various changes and modifications may be made without departing from the scope and spirit of the appended claims, and the disclosure is not limited to the exemplary embodiments set forth herein.

Claims

1. A collimating apparatus, comprising:

a collimator configured to collimate at least two beams having a beam slit; and

2. The collimation device as recited in claim 1, wherein the at least two shielding positions comprise a first shielding position and a second shielding position, and when the shielding member is located at the first shielding position, the shielding member shields the beam current corresponding to the first shielding position, and when the shielding member is located at the second shielding position, the shielding member shields the beam current corresponding to the second shielding position.

3. The collimation device of claim 1 or 2, wherein the plurality of positions further comprises a non-shielding position, the shield not shielding any of the beams when the shield is in the non-shielding position.

4. A collimating device as in claim 1 or 2, further comprising a position sensor for sensing the position of the shield.

5. A collimating apparatus as in claim 4, further comprising a driving means for driving the shutter in motion.

6. A collimating apparatus as in claim 5, further comprising a controller connected to the position sensor and the driving means, respectively, to control the operating state of the driving means in accordance with the position of the shutter sensed by the position sensor.

7. A collimating device as in claim 1 or 2, wherein the shutter switches in a rotational or linear motion or between the plurality of positions.

8. The collimation apparatus of claim 1 or 2, wherein the collimator comprises a first collimator configured to collimate the at least two beams, and a second collimator configured to collimate the at least two beams after being collimated by the first collimator, the shield being mounted on the first or second collimator.

9. A security imaging apparatus, characterized in that the security imaging apparatus comprises:

a beam emitter configured to emit at least two beams, an

A collimating device as in any of claims 1-8.

10. The security imaging apparatus of claim 9, wherein the collimator comprises a first collimator and a second collimator, the first collimating means is a beamguide box, and the shutter is mounted on the beamguide box.