CN209784229U - CT imaging system formed based on lead glass square multi-capillary lens - Google Patents
CT imaging system formed based on lead glass square multi-capillary lens Download PDFInfo
- Publication number
- CN209784229U CN209784229U CN201920640821.XU CN201920640821U CN209784229U CN 209784229 U CN209784229 U CN 209784229U CN 201920640821 U CN201920640821 U CN 201920640821U CN 209784229 U CN209784229 U CN 209784229U
- Authority
- CN
- China
- Prior art keywords
- lead glass
- square
- imaging system
- lens
- ccd camera
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
The utility model relates to a CT imaging system field, concretely relates to CT imaging system based on square many capillary lens of lead glass constitute includes X ray source, revolving stage in proper order, has lead glass square lens and the CCD camera of magnifying the image function, is placed by the scanning object the revolving stage on, X ray source, by scanning object, lead glass square lens, CCD camera place in proper order on the optical axis. A lead glass square lens is placed behind the object being scanned. The utility model provides a CT imaging system based on square many capillary lenses of lead glass constitutes, beneficial effect lies in, has improved current X ray CT imaging system, thereby the increase magnification does not introduce the fuzzy resolution improvement that increases, makes the CT image more clear.
Description
Technical Field
The utility model relates to a CT imaging system field, concretely relates to CT imaging system based on square many capillary lenses of lead glass constitute.
Background
The X-ray CT imaging technology has wide application in the fields of medical diagnosis and industrial nondestructive detection. The method is a device which utilizes X-rays to scan a detected object under different angles and directly reconstructs the internal structure of the object through a reconstruction algorithm according to the principle that the density of each part of the object is different along with the attenuation of the X-rays. Resolution is an important indicator of an X-ray CT imaging system. The magnification, among other things, may improve the resolution of the CT image. Currently, it is common to increase the magnification by increasing the distance between the scanned object and the detector. However, this method increases the half-image blurring effect due to the size of the X-ray source while increasing the magnification, and thus the improvement of the resolution is limited.
Therefore, how to design a set of CT system that can increase the magnification without increasing the ambiguity is a problem to be solved.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a set of high-resolution CT imaging system based on square many capillary lenses of lead glass constitutes to solve at least one problem among the prior art.
The technical scheme of the utility model as follows:
CT imaging system based on square many capillary lens of lead glass constitutes includes X ray light source, revolving stage, has the lead glass square lens and the CCD camera of enlarged image function in proper order, is scanned the object and places the revolving stage on, X ray light source, scanned object, lead glass square lens, CCD camera place in proper order on the optical axis. A lead glass square lens is placed behind the object being scanned.
the lead glass square lens is composed of a plurality of square lead glass sub-tubes, the size of each square lead glass sub-tube at the outlet of each lead glass square lens is the same as that of a CCD camera pixel unit, and the arrangement mode of the square lead glass sub-tubes corresponds to CCD camera pixel points one by one. The square polycapillary lens is coupled to a detector pixel.
The CT imaging system formed by the lead glass square polycapillary lens does not generate an increased penumbra blurring effect along with the increase of the magnification. The lead glass square lens is composed of square lead glass sub-tubes, has a larger total reflection critical angle than silicate glass, and has a larger duty ratio than a traditional circular capillary lens, so that the transmission efficiency is improved.
The utility model provides a CT imaging system based on square many capillary lenses of lead glass constitutes, beneficial effect lies in, has improved current X ray CT imaging system, thereby the increase magnification does not introduce the fuzzy resolution improvement that increases, makes the CT image more clear.
Drawings
Many aspects of the invention will be better understood with reference to the following drawings.
Fig. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic view of a prior art imaging;
Fig. 3 is a schematic diagram of the imaging of the present invention.
Detailed Description
The following embodiments are described in detail with reference to the accompanying drawings and examples, and the following examples are only used to illustrate the technical solutions of the present invention more clearly, but not to limit the scope of the present invention.
The utility model discloses a closely place the square many capillary lenses of lead glass after by the scanned object and improve CT system's resolution ratio, make CT formation of image clearer.
CT imaging system based on square many capillary lens of lead glass constitutes includes X ray light source 1, revolving stage 2 in proper order, has the lead glass square lens 3 and the CCD camera 4 of enlarged image function, is placed by scanning object 5 revolving stage 2 on, X ray light source 1, by scanning object 5, lead glass square lens 3, CCD camera 4 place in proper order on the optical axis.
The lead glass square lens 3 is composed of a plurality of square lead glass sub-tubes, the size of each square lead glass sub-tube at the outlet of the lead glass square lens 3 is the same as that of a CCD camera 4 pixel unit, and the arrangement mode of the square lead glass sub-tubes corresponds to CCD camera 4 pixels one by one.
The lead glass square polycapillary lens has the characteristics that the reflective optical system has strong adaptability to spectrum, high duty ratio, high transmission efficiency and image amplification. And the size of the square lead glass sub-tube is the same as the size of the CCD camera 4 pixel, so that coupling can be realized, and the resolution is improved.
The magnification may improve the resolution of the CT image, especially if the resolution is detector-limited, the function of magnifying the image is usually performed by increasing the distance between the scanned object and the detector, but this will result in a penumbra blurring effect due to the limited X-ray source size, thereby reducing the CT image resolution. Fig. 2 shows that a certain spot on a certain cross section of the scanned object is geometrically magnified, and the limited size of the X-ray source causes blurring on the CCD camera.
Fig. 3 shows a cross-sectional view of a high-resolution CT imaging system formed by a lead glass square polycapillary lens according to the present embodiment. An image of a certain sample point of a certain cross section of a scanned object amplified by the square polycapillary tube always corresponds to one detection unit of the CCD camera, and even if a large focal spot X-ray light source is used, the resolution cannot be damaged by the amplification of the lead glass square polycapillary tube optical device with the amplifying function.
The utility model discloses a CT forming system compares with prior art, has improved the resolution ratio of CT image greatly.
the above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and color enhancement can be made without departing from the technical principle of the present invention, and these improvements and color enhancement should also be regarded as the protection scope of the present invention.
Claims (2)
1. CT imaging system based on square many capillary lens of lead glass constitutes, its characterized in that includes X ray light source (1), revolving stage (2), has lead glass square lens (3) and CCD camera (4) of magnifying the image function in proper order, is placed by scanning object (5) revolving stage (2) on, X ray light source (1), by scanning object (5), lead glass square lens (3), CCD camera (4) place in proper order on the optical axis.
2. The CT imaging system formed by lead glass square polycapillary lenses according to claim 1, characterized in that the lead glass square lens (3) is formed by a plurality of square lead glass sub-tubes, the size of the square lead glass sub-tube at the outlet of the lead glass square lens (3) is the same as the size of the pixel unit of the CCD camera (4), and the arrangement mode of the square lead glass sub-tubes corresponds to the pixel points of the CCD camera (4) one by one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920640821.XU CN209784229U (en) | 2019-05-07 | 2019-05-07 | CT imaging system formed based on lead glass square multi-capillary lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920640821.XU CN209784229U (en) | 2019-05-07 | 2019-05-07 | CT imaging system formed based on lead glass square multi-capillary lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209784229U true CN209784229U (en) | 2019-12-13 |
Family
ID=68804896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920640821.XU Expired - Fee Related CN209784229U (en) | 2019-05-07 | 2019-05-07 | CT imaging system formed based on lead glass square multi-capillary lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209784229U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111351810A (en) * | 2020-03-30 | 2020-06-30 | 山东省分析测试中心 | Analysis method for fracture failure behavior of metal with multi-scale defects |
| CN111681214A (en) * | 2020-05-24 | 2020-09-18 | 哈尔滨理工大学 | Aviation bearing surface rivet detection method based on U-net network |
-
2019
- 2019-05-07 CN CN201920640821.XU patent/CN209784229U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111351810A (en) * | 2020-03-30 | 2020-06-30 | 山东省分析测试中心 | Analysis method for fracture failure behavior of metal with multi-scale defects |
| CN111681214A (en) * | 2020-05-24 | 2020-09-18 | 哈尔滨理工大学 | Aviation bearing surface rivet detection method based on U-net network |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2018153382A1 (en) | Static real-time ct imaging system adaptable to large visual field requirements and imaging method | |
| US6448545B1 (en) | Precision endoscopic imaging system | |
| CN209784229U (en) | CT imaging system formed based on lead glass square multi-capillary lens | |
| EP1185898B1 (en) | Method and apparatus for using non-coherent optical bundles for image transmission | |
| US20060251212A1 (en) | Spot-size effect reduction | |
| AU619602B2 (en) | Intrabuccal detector for x-ray apparatus | |
| US11882349B2 (en) | Large-field-of-view high-resolution imaging device | |
| JPH08211199A (en) | X-ray image pickup device | |
| JP2021174544A (en) | Method performed by data processing device, and charged particle beam device for inspecting sample by such method | |
| Bueno et al. | High-resolution digital radiography and three-dimensional computed tomography | |
| Strauss et al. | CCD-based synchrotron x-ray detector for protein crystallograph-performance projected from an experiment | |
| Umetani et al. | High-resolution wide-field synchrotron radiation micro-CT for large human lung specimen imaging | |
| US5381000A (en) | Image intensifier with modified aspect ratio | |
| CN211318766U (en) | High-space-time resolution imaging system for fast electrons in Tokamak plasma | |
| Liu et al. | Pincushion distortion correction in x-ray imaging with an image intensifier | |
| CN1129000C (en) | Detection method and detector utilizing slow-scanning CCD ray image | |
| JP2000300546A (en) | Radiation photographing apparatus | |
| JP3353499B2 (en) | X-ray imaging device | |
| JP2004301777A (en) | Radiation detector | |
| US5357100A (en) | Ionizing radiation converter with catadioptric electron focusing | |
| EP0900392B1 (en) | Precision imaging system with thin and heavy scintillator and EBCCD | |
| JPH0318786A (en) | Radiation detector | |
| Jorgensen et al. | Micro-CT scanner with a focusing polycapillary x-ray optic | |
| KR20110083848A (en) | Tomograph | |
| JPH10300858A (en) | Two-dimensional radiation detector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191213 Termination date: 20200507 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |