CN206134645U - Subminiature stripe transshaping pipe - Google Patents
Subminiature stripe transshaping pipe Download PDFInfo
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- CN206134645U CN206134645U CN201621084077.2U CN201621084077U CN206134645U CN 206134645 U CN206134645 U CN 206134645U CN 201621084077 U CN201621084077 U CN 201621084077U CN 206134645 U CN206134645 U CN 206134645U
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Abstract
The utility model relates to a subminiature stripe transshaping pipe, including sphere negative pole, prefocus electrode, focusing electrode, positive pole, deflection board and spherical face, connect through the ceramic case between adjacent two electrodes in proper order in sphere negative pole, prefocus electrode, focusing electrode, the positive pole, between two electrodes the width of ceramic case between according to two electrodes the settlement interval and decide, trapezoidal deflection board that wherein deflection board was put for the inclined that has a down dip on a pair of, the one end that the trapezoidal deflection board is close to the sphere negative pole is the tip, the curvature radius of ball screen is greater than sphere negative pole curvature radius. The utility model discloses utensil tangible form and the position accuracy is good, small, light in weight, image distortion are little, effective area is big, resolution ratio is high.
Description
Technical field
This utility model is related to a kind of structure design of striped image converter tube.
Background technology
Streak camera is a kind of to examine based on scan converter, with high time and space and the ultrafast of light intensity resolution capability
Disconnected instrument, can provide the ultrafast information such as the one-dimensional space, one-dimensional intensity and the one-dimensional time of ultrafast process simultaneously.
Streak camera laser radar is capable of achieving the imaging of 3D multispectral fluorescences, 3D polarization imagings, melts high tonal gradation and (is more than
12) and high sample rate in one (1MHz～100GHz), view data refresh rate is high, and obtains with other confocal face sensors
The fusing image data for obtaining is simple, because not needing scanning opticss to be more beneficial for the miniaturization of radar system, and system is little
Type technology and high reliability exactly determine that can radar be applied to the most key technology of space.
Laser three-dimensional imaging Radar Technology, can particularly carry out the non-scanning type laser imaging thunder of high frame frequency three-dimensional imaging
Reach, have very big demand in the field such as space flight, Spatial Countermeasure and attacking and defending, outer celestial body detecting and undersea detection.
Traditional technique of laser imaging adopts scanning form, and its frame frequency is relatively low, and imaged viewing angle is also less, and scanning device should
With, not only increasing the volume of system, also reduce the reliability and job stability of system, these shortcomings limit scan-type
The application of technique of laser imaging.
Non-scanning type (or scintillography) mode of operation is used based on the laser radar of streak camera, not only with into
As the advantages of frame frequency height, wide visual field, small volume and high reliability, tradition can also be overcome to push away clearance up to due to target and detector
Between relative motion and the image deformation that causes, be adapted to carry out marine minerals detection to sea bed under water and marsh, be also applied for
Naval's advanced amphibious landing warship evading to barrier.Streak tube imaging laser radar (STIL-streak tube
Imaging lidar) range information that obtains determined by streak tube temporal resolution, the shadow of effect such as is not easily susceptible to scatter
Ring, so when detecting under water, streak tube imaging laser radar has preferably identification target capability than conventional detectors.
The non-scanning type laser radar for being applied to marine exploration should have larger investigative range, i.e. laser radar to require tool
There is larger imaged viewing angle (field of view)；It is applied to laser radar requirement small volume, the weight of space flight and space exploration
Gently, reliability height and strong antijamming capability etc..
At present, in terms of striped image converter tube microminiature and big detection area, Russia have developed microminiature streak tube,
N.V.Ageeva,S.V.Andreev et al,"small-size meshless 50ps streak tube"
.SPIE.7126,2009,71260A-1, use without wire-grid structure, focusing system is by tubular prefocus electrode and focuses on electricity
Pole constitutes.Its length be 100mm, temporal resolution within 50ps, in sphere negative electrodeIn the range of, spatial resolution
30lp/mm is reached, its structure is as shown in figure 1, the striped image converter tube is mainly cloudy by glass bulb and the photoelectricity sphere being fixed in glass bulb
Pole, focusing system, deflection system and acceleration system composition.Photoelectricity sphere negative electrode realizes the opto-electronic conversion of tested light beam；Focus on system
System is made up of two tubular focusing electrodes of prefocus electrode and focusing electrode, is realized to the acceleration of electron beam and vertical axial direction
Modulation；By institute's making alive, deflection system realizes that measured target temporal information is changed to spatial information；Acceleration system is to comprising quilt
The electronics for surveying target information carries out axial acceleration.
The content of the invention
For the volume for further reducing striped image converter tube, the useful detection area for lifting sphere negative electrode, improve sphere negative electrode
Uniformity, reduces complex manufacturing technology degree, and this utility model provides a kind of microminiature striped of the big detection area of microminiature and becomes
Image tube.
Technical solution of the present utility model is as follows：
Microminiature striped image converter tube provided by the utility model, including sphere negative electrode, prefocus electrode, focusing electrode,
Anode, deflecting plates and spherical face, which is characterized in that：
By ceramics between two electrodes adjacent successively in the sphere negative electrode, prefocus electrode, focusing electrode, anode
Shell connects, depending between two electrodes, the width of ceramic case is according to the setting spacing between two electrodes.
Above-mentioned deflecting plates is the trapezoidal deflection plate of a pair of tilted upward placements, and the trapezoidal deflection plate is near sphere negative electrode
One end is small end.
The radius of curvature of the upper spherical face is more than sphere negative electrode radius of curvature.
Compared with prior art, advantage is this utility model：
1st, shape and positional precision is good, small volume, lightweight.This utility model is using ceramic material and electrode system sealing-in
After be integrally machined, so as to ensure the form accuracy and spatial position precision of the small-sized striped transshaping tube components and entirety, Er Qiexiang
To there is less volume and weight with the image converter tube of overall glass bulb structure.
2nd, pattern distortion is little, and effective area is big, high resolution.Sphere negative electrode of the present utility model and fluorescent screen are using different
The sphere of curvature, spherical structure reduce the error of imaging, while also allowing for the increase of negative electrode useful detection area；Meanwhile, this
Utility model photoelectricity sphere negative electrode adopts the spherical structure of different curvature, rim space high resolution with fluorescent screen.
3rd, deflection sensitivity concordance is good.A pair of trapezoidal deflection plate slant settings of this utility model, due to trapezoidal deflection plate
Rear end width increases, and will not be affected by deflecting plates fringing field effect in electronics operation, and deflection sensitivity concordance is more preferable.
4th, good reliability.This utility model shifts photoelectricity sphere negative electrode manufacturing technology and hot indium encapsulation technique and carries out the streak tube
Making, reduce streak tube dark current, improve light sphere cathode uniformity, improve streak tube reliability.
5th, it is worth high.There is striped image converter tube of the present utility model higher spatial resolution and larger detection area to make
Which is applied to multiple fields.Striped image converter tube low manufacture cost provided by the utility model, function admirable, with very high business
Industry using value.
Description of the drawings
The structure chart of the microminiature streak tube that Fig. 1 Russia develops；
Fig. 2 microminiature striped image converter tube structural representations；
Fig. 3 is deflecting plates structure；
The scanning direction spatial modulation transfer function of the electron beam launched at the point of the off-axis different distances of Fig. 4；
Electronic impulse scanning results of the Fig. 5 at intervals of 30ps, wherein (a) is distributed for the beam spot of electronic impulse on fluorescent screen；
B () is meridian direction electron probability distribution curve.
In figure：1- sphere negative electrodes, 2- ceramic cases 1,3- prefocus electrodes, 4- ceramic cases 2,5- focusing electrodes, 6- ceramic cases
3rd, 7- trapezoidal deflections plate, 8- anodes, 9- fluorescent screens.
Specific embodiment
This utility model is elaborated below in conjunction with accompanying drawing.
The specific work process of this utility model striped image converter tube is：Irradiation of the light sphere negative electrode in extraneous Optical Transient Signal
Under, launch photoelectronic pulse.This process is to complete moment, and electronic impulse width is identical with incident optical signal, and electronic impulse is strong
Degree information relation proportional to incident optical signal.Prefocus electrode, focusing electrode, trapezoidal deflection plate and anode constitute compound poly-
Jiao-deflection system, forms spatial deflection on the fluorescent screen plane diverse location for focusing at optimum image plane by this photoelectronic pulse
Scanning striped picture, realization treat the mapping of light signal temporal information to spatial information.
Structure of the present utility model as shown in Fig. 2 microminiature striped image converter tube, including sphere negative electrode 1, prefocus electrode 3,
Focusing electrode 5, anode 8, deflecting plates 7 and spherical face 9, sphere negative electrode 1 directly pass through the first ceramic case with prefocus electrode 3
2 are fixedly connected, and are fixedly connected by the second ceramic case 4 between prefocus electrode 3 and focusing electrode 5, focusing electrode 5 and anode 8
Between be fixedly connected by the 3rd ceramic case 4, between two electrodes, the width of ceramic case is according between the setting between two electrodes
Depending on；Deflecting plates is the trapezoidal deflection plate of a pair of tilted upward placements；Prefocus electrode and focusing extremely tubular electrostatic focusing
Electrode；The radius of curvature of spherical face is more than sphere negative electrode radius of curvature.
Based on basic structure of the present utility model, carrying out, Need Hierarchy Theory Binding experiment when specific structural parameters determine is common
Same complete design.
Initially with Electron optics design software, with reference to Electromagnetic Calculation method (Time-limited integral) computing system electromagnetic field
Distribution, especially in physical quantity variation intense regions, improves mesh-density, makes numerical result represent striped as precisely as possible
Image converter tube actual electromagnetic field distribution.Secondly the position that the position of estimating system optimum image plane, namely fluorescent screen plane is located.Most preferably
The definition of image planes is：The electronics launched with the elevation angle from light sphere cathode axis, is handed over symmetry system having symmetry axle under condenser lenses effect
The transverse plane that point is located is optimum image plane.Again, the parameter such as temporal resolution and spatial resolution of computing system.This will
The sampling for providing light sphere cathode luminescence electronics is asked, according to the system complex focusing-deflection field distribution obtained, electronics rail is carried out
Mark is followed the trail of.The photoelectron emitted from photoelectricity sphere negative electrode, its primary power, azimuth, the elevation angle and initial position are all full
The certain statistical distribution of foot.Photoelectronic initial position distribution can be uniformly distributed (when uniform light irradiates) or be bordering on Gauss point
Cloth (Laser short range irradiation), just energy is generally acknowledged that obedience β distributions to photoelectron, and initial tilt obeys cosine distribution.When given
After photoelectronic first energy, first position and initial tilt are angular distribution, it is possible to use Monte-Carlo methods are sampled.Root
According to the law of great number in theory of probability, only when frequency in sampling reaches it is infinitely-great when, sampling distribution could be close to actual distribution,
And reality is difficult to accomplish that frequency in sampling reaches infinity, therefore whether Monte-Carlo sampling resultses are reliable, it is necessary to tested
Card.Tracking electron trajectory calculating be based on it is assumed hereinafter that：(1) photoelectronic just energy meet β on (0～0.6eV) (1,
4) it is distributed, the Monte-Carlo sampling of the distribution adopts direct sampling method；(2) the first position of electronics meets and is uniformly distributed；(3)
The cosine distribution of (0～90 °) scope is obeyed at the electron emission elevation angle, and being uniformly distributed in the range of (0～2 π) is obeyed at azimuth.Most
Afterwards, in the Optimal Structure Designing of striped image converter tube, using orthogonal experimental design method, reasonable selection experimental factor and test index
So that selected test combinations are representative, impact of all parts to systematic function is analyzed.As striped image converter tube is to its electricity
The physical dimension of pole part and assembly precision requirement are very high, and error is inevitable in actual processing, assembling process so that
It is many that striped image converter tube measured performance is often below Design Theory.In view of the situation, in Electron optics design, we are by head
The secondary processing for examining or check each electrod assembly in detail, impact of the rigging error to imaging performance, filter out aobvious to image converter tube performance impact
The electrod assembly of work, and its error margin is improved as far as possible by the optimization design of structure so as in attainable scope.
Studied by above-mentioned theory Optimized Simulated, obtain optimum structure, the electric parameter of microminiature striped image converter tube, with this
To instruct, processing, assembling and the debugging of each part of microminiature striped image converter tube are carried out.
In terms of dynamic time resolution estimation, by there are intervals (30ps) from the transmitting of sphere cathode surface
Narrow electronic impulse sequence (pulsewidth 5ps) calculating the dynamic time resolution of streak tube.Apply time-varying scanning electricity to deflecting plates
Pressure, scanning speed are v=0.3 × 108M/s, selects suitable scanning work point so that when electron beam enters deflecting plates
Carve, scanning voltage is in linear segment.Adjacent electronics pulse is respectively shown in Fig. 5 (a), (b) after deflecting plates scanning glimmering
Electron distribution curve in beam spot distribution and meridian direction (i.e. scanning direction) on optical screen.From Fig. 5 (a) it can be seen that at intervals of
The adjacent electron beam of 30ps has part overlapping when reaching fluorescent screen, but Fig. 5 (b) shows probability of the electronics on meridian direction point
The corresponding distribution probability in the lowest point position of cloth curve is less than required by Rayleigh criterion 0.7, so, streak tube can distinguish interval
It is better than 30ps for the electronic impulse of 30ps, i.e. streak tube dynamic time resolution.
Claims (3)
1. a kind of microminiature striped image converter tube, including sphere negative electrode, prefocus electrode, focusing electrode, anode, deflecting plates and sphere
Fluorescent screen, it is characterised in that：
Connected by ceramic case between two electrodes adjacent successively in the sphere negative electrode, prefocus electrode, focusing electrode, anode
Connect, depending between two electrodes, the width of ceramic case is according to the setting spacing between two electrodes.
2. microminiature striped image converter tube according to claim 1, it is characterised in that：The deflecting plates is a pair of tilted upwards
The trapezoidal deflection plate of placement, the trapezoidal deflection plate are small end near one end of sphere negative electrode.
3. microminiature striped image converter tube according to claim 1 and 2, it is characterised in that：The curvature of the spherical face
Radius is more than sphere negative electrode radius of curvature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621084077.2U CN206134645U (en) | 2016-09-27 | 2016-09-27 | Subminiature stripe transshaping pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621084077.2U CN206134645U (en) | 2016-09-27 | 2016-09-27 | Subminiature stripe transshaping pipe |
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| Publication Number | Publication Date |
|---|---|
| CN206134645U true CN206134645U (en) | 2017-04-26 |
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|---|---|---|---|
| CN201621084077.2U Expired - Fee Related CN206134645U (en) | 2016-09-27 | 2016-09-27 | Subminiature stripe transshaping pipe |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110488340A (en) * | 2019-07-29 | 2019-11-22 | 中国科学院西安光学精密机械研究所 | A kind of microminiature interference formula ultrafast X-ray fiber-optical probe |
| CN113451091A (en) * | 2021-05-20 | 2021-09-28 | 金陵科技学院 | Large-detection-area stripe image converter tube with single-lens focusing system and camera |
| WO2021208282A1 (en) * | 2020-04-13 | 2021-10-21 | 深圳大学 | Field curvature measurement method and apparatus for streak tube, computer device, and readable storage medium |
| WO2022021140A1 (en) * | 2020-07-29 | 2022-02-03 | 深圳大学 | Visible light streak tube and electron-optical imaging system |
-
2016
- 2016-09-27 CN CN201621084077.2U patent/CN206134645U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110488340A (en) * | 2019-07-29 | 2019-11-22 | 中国科学院西安光学精密机械研究所 | A kind of microminiature interference formula ultrafast X-ray fiber-optical probe |
| WO2021208282A1 (en) * | 2020-04-13 | 2021-10-21 | 深圳大学 | Field curvature measurement method and apparatus for streak tube, computer device, and readable storage medium |
| WO2022021140A1 (en) * | 2020-07-29 | 2022-02-03 | 深圳大学 | Visible light streak tube and electron-optical imaging system |
| CN113451091A (en) * | 2021-05-20 | 2021-09-28 | 金陵科技学院 | Large-detection-area stripe image converter tube with single-lens focusing system and camera |
| CN113451091B (en) * | 2021-05-20 | 2023-06-02 | 金陵科技学院 | Large detection area fringe image converter tube with single lens focusing system and camera |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170426 Termination date: 20170927 |
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| CF01 | Termination of patent right due to non-payment of annual fee |