CN203850242U - An X ray image intensifier - Google Patents
An X ray image intensifier Download PDFInfo
- Publication number
- CN203850242U CN203850242U CN201420113186.7U CN201420113186U CN203850242U CN 203850242 U CN203850242 U CN 203850242U CN 201420113186 U CN201420113186 U CN 201420113186U CN 203850242 U CN203850242 U CN 203850242U
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- scintillator
- input
- screen
- output
- photocathode
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- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
Abstract
The utility model relates to the field of X ray digital imaging equipment detection, and especially relates to an X ray image intensifier. The X ray image intensifier is composed of a housing and a liner. The housing is a cylindrical vacuum container. An input screen, an input scintillator, a photoelectric cathode, a vacuum tube, a focusing electrode, an output scintillator and an output screen are arrange in the container. According to the utility model, the arrangement of the input scintillator and the output scintillator can provide an output brightness of an image and prevent output light rays from influencing normal working of the photoelectric cathode. Compared with existing image intensifiers, the X ray image intensifier enables a satisfying clear image to be obtained and facilitates better industrial detection and scientific research work.
Description
Technical field
The utility model relates to X ray digital imaging apparatus detection field, especially a kind of radioscopic image booster.
Background technology
Image intensifier is a kind of imager, and it is to utilize electro-optical technology to convert X ray to visible ray, simultaneously the device of transitive graph picture.On image intensifier input window at present used, all to utilize X ray sensitive fluorescence to shield, sightless x-ray photon image is converted to respective electronic, and this electronics is accelerated and is focused on phosphor output screen by high pressure, and image transfer and enhancing are that electron beam completes in vacuum.But used phosphor screen X ray detection method in the past, because picture contrast is subject to the brightness contrast of image, limited, cannot obtain satisfactory perspective detected image.
Summary of the invention
In order to solve the deficiency of conventional images booster technology, the utility model provides a kind of brightness that can improve image, then by systems such as television cameras, finally on television screen, demonstrates the radioscopic image booster of tested workpiece picture rich in detail.
The technical solution adopted for the present invention to solve the technical problems is, a kind of radioscopic image booster, is comprised of shell and inner bag, and shell is cylindrical vacuum courage, and inner bag is assemblied in cylindrical vacuum courage; Inner bag is provided with input screen, input scintillator, photocathode, vacuum tube, focusing electrode, output scintillator and cutout screen, and described input screen is comprised of metallic aluminium or Titanium; Described cutout screen is the windowpane that outside scribbles anti-reflection layer; Described input scintillator is made by the cesium iodide that scribbles sodium metal material, and one end surface deposition is in the surface of input screen, and other end surface is provided with one deck transition zone indium oxide, and photocathode is deposited on transition zone; Described output scintillator is to be made by P20 scintillator material, and one end surface deposition is in the surface of cutout screen, and there is the aluminium foil that one deck is very thin on other end surface, and described input scintillator and photocathode are to be curved surface shaped.
When input screen is arrived in x-ray bombardment, impel input scintillator to send visible ray, under the effect of input scintillation crystal and this visible ray, excite photoelectricity cathode emission electronics, these electronics are accelerated and focus to the scintillator of cutout screen by high voltage electric field, make it again send visible ray, this visible images brightness is greatly enhanced.
The invention has the beneficial effects as follows, the setting of the utility model input scintillator and output scintillator, the output brightness of image can be provided, can avoid again exporting light affects photocathode and normally works, compare with image intensifier in the past, gratifying picture rich in detail be can obtain, better industrial inspection and scientific research are beneficial to.
Accompanying drawing explanation
Fig. 1 is structure principle chart of the present utility model.
Fig. 2 inputs scintillator structure chart in the utility model.
Fig. 3 exports scintillator structure chart in the utility model.
Wherein, 1. input screen, 2. input scintillator, 3. photocathode, 4. vacuum tube, 5. output scintillator, 6. cutout screen, 7. visible ray, 8. high voltage source, 9. focusing electrode, 10.X beam, 11. transition zones, 12. aluminium foils.
Embodiment
A radioscopic image booster, is comprised of shell and inner bag, and shell is cylindrical vacuum courage, has input screen 1, input scintillator 2, photocathode 3, vacuum tube 4 and focusing electrode 9, output scintillator 5, cutout screen 6 in courage.
Described shell is useful on the material lead of radiation shield and a cylindrical vacuum courage of making for the metal molybdenum of electromagnetic shielding with containing.
Described inner bag is assemblied in cylindrical vacuum courage.
Described input screen 1 is comprised of metallic aluminium or Titanium, and very thin aluminium sheet or titanium plate can be protected input screen, also prevents the explosion that it is inner simultaneously.
Described input scintillator 2 is made by the cesium iodide (CsI) that scribbles sodium metal (Na) material, one end surface deposition is on input screen 1, when CsI:Na structure scintillator is subject to x-ray bombardment, can send green light, and mainly the length direction along crystal conducts to photocathode 3, and light seldom has sideways diffusion.
There are one deck transition zone 11 indium oxide In on described input scintillator 2 other end surfaces
2o
3, transition zone 11 light transmittances are high, and can separate inputting scintillator 2 and photocathode 3 materials chemistries.
Described photocathode 3 is deposited on transition zone 11, and when receiving x-ray bombardment, input scintillator 2 inspires light photon, and then photocathode discharges photoelectron by light photon under point effect effect.
Described input scintillator 2 and photocathode 3 are to be curved surface shaped, to guarantee that the path that the interior electronics of vacuum tube 4 passes through is equivalent, reduce the distortion of image.
Described vacuum tube 4 is photoelectron is accelerated and accessible passing through, and in pipe, the path that acceleration electronics passes through intersects, and making the relative input screen image of cutout screen image is reversion inverted image.
Described focusing electrode 9 is that accelerated electron is focused to output scintillator 5 surfaces, and the signal of image is enhanced, and can make Image Zooming by changing focus voltage.
Described output scintillator 5 is to be made by P20 scintillator material (ZnCdS:Ag) material, one end surfaces is also deposited on cutout screen 6 surfaces, there is the aluminium foil 12 that one deck is very thin on output scintillator 5 other end surfaces, both be used for as electrode, be used for again reflecting the light echo of cutout screen 6, thereby be conducive to improve image output brightness, can avoid again exporting light affects photocathode 3 and normally works.
Described cutout screen 6 is windowpanes that outside scribbles anti-reflection layer, prevents the scattering of light and light reflection is minimized.
When input screen is arrived in x-ray bombardment, impel input scintillator to send visible ray, under the effect of input scintillation crystal and this visible ray, excite photoelectricity cathode emission electronics, these electronics are accelerated and focus to the scintillator of cutout screen by high voltage electric field, make it again send visible ray, this visible images brightness is greatly enhanced.
Claims (2)
1. a radioscopic image booster, by shell and inner bag, formed, it is characterized in that: shell is cylindrical vacuum courage, inner bag is provided with input screen, input scintillator, photocathode, vacuum tube, focusing electrode, output scintillator and cutout screen, and described input screen is comprised of metallic aluminium or Titanium; Described cutout screen is the windowpane that outside scribbles anti-reflection layer; Described input scintillator is made by the cesium iodide that scribbles sodium metal material, and one end surface deposition is in the surface of input screen, and other end surface is provided with one deck transition zone indium oxide, and photocathode is deposited on transition zone; Described output scintillator is to be made by P20 scintillator material, and one end surface deposition is in the surface of cutout screen, and there is the aluminium foil that one deck is very thin on other end surface.
2. radioscopic image booster according to claim 1, is characterized in that: described input scintillator and photocathode are to be curved surface shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420113186.7U CN203850242U (en) | 2014-03-13 | 2014-03-13 | An X ray image intensifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420113186.7U CN203850242U (en) | 2014-03-13 | 2014-03-13 | An X ray image intensifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203850242U true CN203850242U (en) | 2014-09-24 |
Family
ID=51563227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420113186.7U Expired - Fee Related CN203850242U (en) | 2014-03-13 | 2014-03-13 | An X ray image intensifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203850242U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019137096A1 (en) * | 2018-01-12 | 2019-07-18 | 深圳大学 | Quick detection system for photoelectric cathode of x-ray streak camera |
| CN110310875A (en) * | 2019-08-05 | 2019-10-08 | 北方夜视技术股份有限公司 | A kind of gleam image intensifier EMC design |
| CN112885686A (en) * | 2021-01-14 | 2021-06-01 | 北方夜视技术股份有限公司 | Anti-electromagnetic interference tube shell electromagnetic shielding layer of image intensifier and preparation method thereof |
-
2014
- 2014-03-13 CN CN201420113186.7U patent/CN203850242U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019137096A1 (en) * | 2018-01-12 | 2019-07-18 | 深圳大学 | Quick detection system for photoelectric cathode of x-ray streak camera |
| CN110310875A (en) * | 2019-08-05 | 2019-10-08 | 北方夜视技术股份有限公司 | A kind of gleam image intensifier EMC design |
| CN110310875B (en) * | 2019-08-05 | 2021-04-27 | 北方夜视技术股份有限公司 | Electromagnetic compatibility design method for low-light-level image intensifier |
| CN112885686A (en) * | 2021-01-14 | 2021-06-01 | 北方夜视技术股份有限公司 | Anti-electromagnetic interference tube shell electromagnetic shielding layer of image intensifier and preparation method thereof |
| CN112885686B (en) * | 2021-01-14 | 2023-04-11 | 北方夜视技术股份有限公司 | Anti-electromagnetic interference tube shell electromagnetic shielding layer of image intensifier and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140924 Termination date: 20190313 |
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| CF01 | Termination of patent right due to non-payment of annual fee |