CN109545640A - Scanning camera with electronic impulse alignment function - Google Patents
Scanning camera with electronic impulse alignment function Download PDFInfo
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- CN109545640A CN109545640A CN201811564719.2A CN201811564719A CN109545640A CN 109545640 A CN109545640 A CN 109545640A CN 201811564719 A CN201811564719 A CN 201811564719A CN 109545640 A CN109545640 A CN 109545640A
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- collimation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J31/00—Cathode ray tubes; Electron beam tubes
- H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
- H01J31/26—Image pick-up tubes having an input of visible light and electric output
- H01J31/28—Image pick-up tubes having an input of visible light and electric output with electron ray scanning the image screen
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- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
Abstract
The present invention provides a kind of scanning camera with electronic impulse alignment function, core component streak tube, including object lens sample slit, photocathode, and collimation accelerates electrode, electron focusing lens, anode, traveling wave deflector, fluorescent screen.It includes linearly aligned microwell array structure that the collimation, which accelerates electrode centers, it can make its collimation when electronic impulse is passed through, in picosecond and subpicosecond grade ultrafast phenomena research field, time resolution and the spatial resolving power that camera can be more effectively improved closest to the streak tube scanning camera of technology are compared.
Description
Technical field
The present invention relates to picosecond and subpicosecond grade ultrafast phenomena research fields, have electronics in particular to one kind
The scanning camera of pulse alignment function.
Background technique
In picosecond and subpicosecond grade ultrafast phenomena research field, the scanning camera diagnostic techniques based on streak tube is not
Alternative ultrafast technology for information acquisition.Streak tube scanning camera is that have ultrahigh time resolution, high-space resolution and wide spectrum
The high-end scientific measurement and diagnostic instrments of response, in material science, plasma physics, basic front line science research and precision
The fields such as processing and manufacture have very extensive purposes, especially in inertial confinement fusion (ICF), nuclear blast simulation, advanced routine
Indispensable even unique important diagnostic technological means in the National Technicals research such as weaponry design and development.
With ICF study deep development, more high time resolution, more Larger Dynamic range streak tube scanning camera it is important
Property just seems more and more prominent.The time resolution of streak tube scanning camera at present has been carried out picosecond magnitude to the prominent of femtosecond magnitude
It is broken, but cannot achieve breakthrough always in terms of the research of the dynamic range of femtosecond magnitude streak tube scanning camera, it can not meet
The practical application request of ICF experiment.The dynamic range for expanding femtosecond streak tube scanning camera becomes one of urgent need to solve the problem.
Streak tube is the core devices of scanning camera, the limit of scanning camera performance parameter (such as time resolution, space point
Distinguish, the parameters such as dynamic range) it is all to be determined by streak tube.Existing scanning camera technology generally uses electrostatic focusing profile bar line
Pipe also has small part using magnetic focusing type streak tube, and structure includes photocathode, accelerates electrode, focusing system (static focus
Lens or magnetic focusing lens), scan deflection system and fluorescent screen, structure see Fig. 1.Its working principle is that: the target light surveyed
The light that source issues takes out one-dimensional space information by slit, then transient state light source is imaged on to the photoelectricity of scan converter by object lens
On cathode.Slit section on photocathode launches photoelectron under pulse optical radiation, since photocathode has faster
Time resolution characteristics and good photoemission linear characteristic, light pulse will be converted into electronic impulse, i.e. photoelectricity without distortions
The transient state emission density of son is proportional to the optical pulse intensity at the moment, and the duration of generated photoelectronic pulse is exactly incident
The duration of light pulse.Therefore, as long as measuring the space-time structure of electronic impulse, so that it may obtain the space-time of incident light pulse
Structure.The photoelectron that photocathode generates enters focusing system after accelerating electrode to accelerate, and then sweeps through scan deflection system
Deflection is retouched, the temporal information that electronic impulse is included is isolated, the electronic impulse bombardment fluorescent screen for isolating temporal information generates
The optical imagery comprising spatial information being sequentially arranged, the system that can be recorded is read and record.
Above-mentioned acceleration electrode in the prior art generally uses grid electrode, it has reticular structure, is one kind by diameter
For micron dimension fine wire it is vertically and horizontally arranged be welded, grid is closeer, and string diameter is thinner.Aperture plate is as electrode is accelerated, with yin
Pole collective effect generates an almost plane electric field, and the electronics that photocathode generates obtains rapidly energy under the action of flat field
Upper state is reached, this reduces the times of electron beam group space charge interaction, so that temporal dispersion and space be inhibited to expand
Exhibition, improves time resolution and the spatial discrimination of streak tube.
Due to aperture plate be it is a kind of by groups of metal filaments at nonplanar structure grid, surface be formed by electric field be it is non-planar
Electric field, this electric field have certain blooming effect to electron beam, can change the original direction of motion of electronics and trend, increase electricity
The dispersion angle of beamlet, expand wide-angle electronics and the stray electron proportion in electron beam, thus influence electron beam when
Empty characteristic, and then influence time resolution and the spatial discrimination of streak tube.
The two of its disadvantage are that the wire diameter of aperture plate is in micron dimension, therefore aperture plate is very thin, are easy when making electrode
Generate fold；Its self-supplying capacity is smaller, cracky；When loading high voltage, it is easily deformed and generates electrion.
The three of its disadvantage are that the latticed aperture plate of aperture plate has perturbation to neighbouring electric field；As long as although aperture plate
Line is sufficiently fine and close enough, so that it may ignore its influence to electric field, but overstocked aperture plate is more serious to the absorptance of electronics,
The transmitance of electronics is low, such as line footpath is 20 μm, line density is that 10 lines/mm aperture plate is 20% to the absorptivity of electronics, line footpath
It is 40 lines/mm aperture plate for 12.5 μm, line density is 62% to the absorptivity of electronics.
Summary of the invention
In view of the above problems, the present invention provides a kind of scanning cameras with electronic impulse alignment function, pass through its standard
It is straight to accelerate electrode structural designs, achieve the effect that improve streak tube time resolution and spatial resolving power.
To achieve the goals above, the present invention adopts the following technical scheme that:
Compared with original technology, wire-grid structure accelerate electrode be replaced as collimation accelerate electrode, collimation accelerate electrode with
Cathode forms plane accelerating field, and included electronic impulse alignment function.The accelerated electric field of electronic impulse that emission of cathode goes out adds
It is collimated again after speed by collimator, the big electronics of angle is absorbed by the collimator, and then electronic impulse is through electron focusing lens
It focuses, after traveling wave deflector scan deflection, isolates the temporal information that electronic impulse is included, isolate temporal information
Electronic impulse bombardment fluorescent screen generates the optical imagery comprising spatial information being sequentially arranged, and can be recorded system reading
It takes and records.
Collimator is the sheet metal panel with a thickness of 0.1-0.5 millimeters, and center includes linearly aligned microwell array structure,
Micro-pore diameter is 5-20 microns, 2-10 microns is divided between micropore, pore arrangement mode can be straight-line, or 60 ° of plums
Spend wrong row's formula.The inner wall of collimator surface and micro-pipe passes through conductive processing, so that collimator surface and micro-pipe inner wall surface are etc.
Gesture body, when electronics passes through micro-pipe, its direction is collimated.
The present invention accelerates electrode to replace existing wire-grid structure acceleration electrode by introducing collimation in streak tube, compared to existing
There are the advantages of technology at least following three points:
First, unit of the micropore as collimating structure, diameter is more much smaller than aperture plate aperture, disturbs to plane accelerating field
It is dynamic smaller, reduce the destruction for accelerating electrode surface electric field to electronic impulse itself space-time structure；
Second, the depth of micropore is more much bigger than aperture plate thickness, wide-angle electronics and stray electron can be absorbed, and
Electron beam is collimated, the disperse of electron beam is reduced, improves the space-time characterisation of electron beam；
Third, collimator is the thin slice with a thickness of 0.1-0.5 millimeters, intensity of controlling oneself is far longer than aperture plate, helps to add
High pressure is carried, Surface field strength is improved, so that the space-time characterisation of streak tube is further promoted, so that streak tube has
Higher time resolution and spatial resolving power.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of the scope of the invention.
Fig. 1 is a kind of existing streak camera working principle diagram；
Fig. 2 be a kind of scanning camera with electronic impulse alignment function provided in an embodiment of the present invention streak tube and its
Simplify working principle diagram；
Fig. 3 is a kind of microwell array structural plan schematic diagram provided in an embodiment of the present invention；
Fig. 4 is a kind of large area microwell array collimator structure schematic three dimensional views provided in an embodiment of the present invention；
Fig. 5 is a kind of streak camera work structuring schematic diagram provided in an embodiment of the present invention.
Specific embodiment
Below in conjunction with attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Usually exist
The component of the embodiment of the present invention described and illustrated in attached drawing can be arranged and be designed with a variety of different configurations herein.Cause
This, is not intended to limit claimed invention to the detailed description of the embodiment of the present invention provided in the accompanying drawings below
Range, but it is merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
Embodiment
Fig. 2 be a kind of scanning camera with electronic impulse alignment function provided in an embodiment of the present invention streak tube and its
Simplify working principle diagram.
The streak tube includes:
It is opened on the cathode plate of the photocathode, is adopted for extract the one-dimensional space information of object being measured
Sample slit.
In the embodiment of the present invention, a sampling slit i.e. width is adjustable, narrow elongate slot apertures, and slit type has solid
Determine slit, unilateral adjustable asymmetric slit and bilateral adjustable symmetrical slots.The width of slit generally in the magnitude of μm-mm,
Maximum width is several mm, determines the intensity of outgoing beam, when exiting light beam intensity can be adjusted as needed, generally uses
Adjustable slit.Some requirements of the adjustable slit in addition to solid slit should be met, if blade shape and spectral line coincide, blade surface is bright and clean,
No marking, non-notch, impulse- free robustness, without rusty stain, without oil smoke, and be arranged outside corresponding protective device, also to have the following performance: 1.
Openability；It should be able to smoothly be adjusted back and forth opening in range, and can be upper at an arbitrary position self-locking；2. having certain indicating value essence
Degree and existing property；3. liang cutting edge is strictly parallel；4. core is constant in opening process.The sampling slit towards object being measured,
The light that surveyed target light source issues is received, the one-dimensional space information in light is taken out.
It is set to the input path of sampling slit, is imaged on photoelectricity for object being measured to be transmitted the transient state light source information come
Object lens on cathode.
In the embodiment of the present invention, the object lens are a lens groups as made of several lens combinations, between each eyeglass that
This at intervals in order to overcome the image defects of single lens, reduces difference and is applied in combination.The quality of object lens quality
The quality for directly affecting imaging is the main component for determining imaging clearly degree.The object lens using from object transmitting come
Light is imaged on object being measured on photocathode.
It is set to the emitting light path of object lens, for converting optical pulse information to the photocathode of photoelectronic pulse.
In the embodiment of the present invention, the photocathode includes cathode plate and the photoelectricity that can convert incident radiation to electronics
Emissive material, the cathode plate, which is used, has the conductive material for stopping or absorbing to incident light, and it is narrow that incident end face offers sampling
Seam, the sampling slit are linear gaps, and outgoing end face is coated with the light for generating photoelectronic pulse under light radiation
Electric emissive material；When light irradiates material surface, if the energy of incident light is sufficiently large, the electronics of material internal can be made to obtain foot
Big energy is reached from internal evolution, this phenomenon is known as external photoeffect.By external photoeffect, after the sampling slit
The pulse optical radiation from being transmitted to the sampling slit from object lens is converted photoelectron by photoemissive material.The photocathode
It is prepared according to prior art, there is the clean surface of lower surface vacuum energy level and atom level, have faster time response special
Property and good photoemission linear characteristic, electronic impulse can be converted by light pulse is undistorted, i.e., photoelectronic transient state hair
The optical pulse intensity that density is proportional to the moment is penetrated, the duration of generated photoelectronic pulse is exactly that the incident sampling is narrow
The duration of light pulse in seam.Therefore, as long as measuring the space-time structure of electronic impulse, so that it may obtain incident light pulse
Space-time structure.Photoemissive material on photocathode launches photoelectron under pulse optical radiation, these subsequent photoelectrons to
Collimation accelerates electrode movement.
The collimation acceleration electrode is set to the emitting light path of photocathode, for accelerating and collimating electronic impulse.
Fig. 3 is a kind of microwell array structural plan schematic diagram provided in an embodiment of the present invention.
In the embodiment of the present invention, it is thickness 0.1-0.5 millimeters of sheet metal panel that the collimation, which accelerates electrode, wherein pericardium
Containing linearly aligned 31 array structure of micropore, 31 aperture of micropore is 5-20 microns, is divided into 2-10 microns, 31 arrangement mode of micropore
Can be straight-line, or 60 ° of plum blossom mistakes arrange formulas, and micropore section is generally circular in cross section, or square, diamond shape or
Regular hexagon etc..
Fig. 4 is a kind of large area microwell array collimator structure schematic three dimensional views provided in an embodiment of the present invention.
It is the laminated structure as made of a large amount of hollow capillary micro-pipe two-dimensional arrangements, the inner wall of collimator surface and micro-pipe
By conductive processing, so that collimator surface and micro-pipe inner wall surface are equipotentiality body.
The advantages of collimation provided by the invention accelerates electrode structure to bring include:
First, unit of the micropore 31 as collimating structure, diameter are more much smaller than aperture plate aperture.Relative to composition aperture plate
The nonplanar structure network that wire is formed, the electric field for being covered in surface is more smooth, thus the electric field is relative to aperture plate
The non-planar electric field on surface, it is smaller to the blooming effect of electron beam, thus the influence to electronics original direction of motion and trend
It is smaller also smaller to be influenced on the space-time characterisation of electron beam, and then the influence of the time resolution and spatial discrimination to streak tube
It is smaller.
Second, much bigger than aperture plate thickness of the depth of micropore 31,31 inner wall of micropore can be to wide-angle electronics and miscellaneous
Scattered electronics is absorbed, and is collimated to electron beam, and the disperse of electron beam is reduced, and improves the space-time characterisation of electron beam；
Third, collimator 32 is the thin slice with a thickness of 0.1-0.5 microns, intensity of controlling oneself is far longer than aperture plate, Ke Yinai
By higher high voltage electric field, Surface field strength is improved, so that the space-time characterisation of streak tube is further promoted, so that streak tube
Have higher time resolution and spatial resolving power.
The ultrafast femtosecond laser process of the microwell array structure, fine structure material moulding shaping process, photochemistry
The micro-nanos precision processing technology production such as etching technics, microfibre stretch forming process or accurate micro-structure 3D printing technique and
At.
Microwell array form substrate selects the material for being suitble to each manufacture craft processing, can use common metallic conduction material
Material, metallic element alloy (copper alloy, aluminium alloy etc.), composition metal and the conductive material of other specific uses etc.；It can also adopt
The compound height such as electricity consumption plastics, conductive rubber, conductive fibers, conductive coating, conductive adhesive and transparent conductive film
Molecular conductive material；It can also be used by doped or non-doped structural type macromolecule conducting material.
In some embodiments, microwell array form substrate can also be selected as the poor semiconductor of electric conductivity or non-be led
Body needs to do conductive processing to its surface at this time.For example, one layer of thin-film material with good conductivity is deposited in substrate surface,
Electrochemical plating membrane technology can be used；Conductive film material can select copper, the metal material with good conductivity such as silver, aluminium, gold,
Or the conductive oxide materials such as silica.
The photoelectron that photocathode generates is poly- into electron focusing lens after collimation accelerates electrode acceleration and collimation
It is burnt.
It is set to the emitting light path that collimation accelerates electrode, for focusing the electron focusing lens of light pulse.
In the embodiment of the present invention, the electron focusing lens are the electron-optical system that electrostatic field or electromagnetic complex field form
System, the electrostatic field or electromagnetic complex field that the electron focusing lens generate have the function of focusing photoelectron and imaging.Institute
It states electron focusing lens and accelerates electrode to penetrate the photoelectron focal imaging come collimation, then go through anode.
Preferably, the streak tube further include:
It is set to the emitting light path of electron focusing lens, for accelerating the anode of photoelectronic pulse.
In the embodiment of the present invention, the anode includes anode plate and the circular iris that is opened on the anode plate, described
There are oriented electric field between anode plate and the cathode plate, the oriented electric field further speeds up photoelectron in field, from the circle
Pass through in shape diaphragm, injects traveling wave deflection system.
It is set to the emitting light path of the anode, the traveling wave for isolating the temporal information that photoelectronic pulse is included is inclined
Turn device.
In the embodiment of the present invention, the traveling wave deflector includes two blocks of charged metal plates being parallel to each other, and is added on two boards
There is the ramp sweep voltage of high speed, the photoelectron that different time reaches will enter fluorescent screen with different spatial positions, finally
Bombardment fluorescent screen generates the optical imagery comprising spatial information being sequentially arranged.
The fluorescent screen is set to the emitting light path of traveling wave deflector, the carrier for photoelectronic imaging.
In the embodiment of the present invention, the main function of the fluorescent screen is the electric signal that will receive in the form of brightness change
It reappears on the fluorescent screen, generates the optical imagery comprising space time information, system record can be recorded and read.
In some embodiments, the anode can be not present in the streak tube structure, i.e., electron focusing lens are poly-
Defocused photoelectronic pulse is directly entered traveling wave deflector.
In some embodiments, there is also being set between the traveling wave deflector and the fluorescent screen, for making photoelectricity
The electron multiplier of subsignal amplification, bombardment fluorescent screen is generated comprising temporal information and space after the photoelectron signal is amplified
The optical imagery of information can be recorded system record and read.
Fig. 5 is a kind of streak camera work structuring schematic diagram provided in an embodiment of the present invention.
The streak camera work structuring schematic diagram includes:
Intelligence control system 51, the intelligence control system 51 and streak tube 54, scanning control system 52, high voltage supply system
System 53, record system 55 are electrical connected, and the intelligence control system 51 includes electrode voltage monitoring module, and chamber environment monitors mould
Block, electron focusing voltage control module, the intelligence control system need in limited bulk to the electron focusing of streak camera
Voltage, record system, which is made, to be accurately controlled, and is needed to electrode voltage, and chamber environment parametric data is accurately monitored
To ensure that camera safely and effectively works.
The electrode voltage monitoring module for monitoring two voltage across poles in real time, and transfers information to intelligent control system
System 51, when voltage fluctuation is more than a certain preset threshold value, control system will stop the work of camera.
The chamber environment monitoring module for monitoring the real time temperature including limited volume plenum, pressure information, and is incited somebody to action
Information is transferred to intelligence control system 51, and when temperature and pressure fluctuation is more than a certain preset threshold value, control system will stop
The work of camera.
The electron focusing voltage control module is divided into electrostatic focusing lens and magnetic for controlling the voltage between two-plate
Condenser lens, practical is to focus photoelectronic imaging by electrostatic field in control lens picture pipe or electromagnetic complex field.
Scanning control system 52, the scanning control system 52 and intelligence control system 51, high voltage supply system 53, striped
Pipe 54 is electrical connected, and the scanning control system 52 includes scanning Time delay module, and scan bias voltage module is needed to striped phase
The scanning Time delay of machine, scan bias voltage, which is made, to be accurately controlled to assist the intelligence control system 51 to ensure camera safely and have
Imitate work.
The scan bias voltage module and the scanning Time delay module, for controlling the generation and scanning of scanning signal
The time of signal arrival traveling wave deflector.Traveling wave deflector can control the speed that scanning signal is transmitted on deflecting plates, make it
Can and the speed flown inside deflecting plates of photoelectronic pulse match so that photoelectronic pulse generated in scanning signal it is inclined
Turn more effectively deflect under the action of electric field.
High voltage supply system 53, the high voltage supply system 53 and intelligence control system 51, scanning control system 52, striped
Pipe 54 records system 55, and communication system 56 is electrical connected, and the electric energy for components all in camera supplies.
Streak tube 54, the core devices of scanning camera, the limit (such as the time resolution, space of scanning camera performance parameter
The parameters such as resolution, dynamic range) it is all to be determined by streak tube 54, the streak tube 54 and intelligence control system 51, scan control
System 52, high voltage supply system 53, record system 55 are electrical connected, for converting electronic impulse for light pulse and will at that time
Empty message reflection is on fluorescent screen.
Record system 55, the record system 55 are connected with the streak tube 54, can read and record photoelectronic pulse
The optical imagery comprising temporal information and spatial information that bombardment fluorescent screen leaves.
Communication system 56, the communication system are connected with record system, the image letter for obtaining the record system
Breath is transmitted to exterior terminal with the signal type for transmission, and the signal type for transmission includes text information, image
Information and video information.
In the present embodiment, wireless communication can be used in communication system 56, is also possible to wire communication.
Preferably, communication system 56 uses wire communication, is suitable for the stabilization of short range transmission, safety, anti-interference ability
By force.
In the present embodiment, exterior terminal includes user terminal, sensor or other scanning cameras.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, device, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, specific features, device, material or the feature of description can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. a kind of scanning camera with electronic impulse alignment function characterized by comprising photocathode, collimation accelerate electricity
Pole, electron focusing lens, anode, traveling wave deflector, fluorescent screen and record system,
The photocathode includes cathode plate and the photoemissive material that can convert incident radiation to electronics, the cathode plate
Using having the conductive material for stopping or absorbing to incident light, incident end face offers sampling slit, and the sampling slit is straight
Linear gap, outgoing end face are coated with the photoemissive material for generating photoelectronic pulse under light radiation；
The collimation accelerates electrode to be arranged on the emitting light path of the photocathode, for photoelectronic pulse accelerate with
Collimation；
The electron focusing lens focus be arranged in it is described collimation accelerate electrode emitting light path on, for photoelectronic pulse into
Line focusing；
The anode is arranged on the emitting light path of the electron focusing lens, for forming high voltage electric field between photocathode,
Accelerate photoelectronic pulse under the driving of high voltage electric field；
The traveling wave deflector is arranged on the emitting light path of the anode, for being scanned deflection to photoelectron, isolates
The temporal information that photoelectronic pulse is included；
The fluorescent screen is arranged on the emitting light path of the traveling wave deflector, in the electronic impulse for isolating temporal information
Bombardment under generate the optical imagery comprising spatial information that is sequentially arranged；
The record system and the fluorescent screen are electrically connected, temporal information and space letter for including to the optical imagery
Breath is read out and records.
2. scanning camera according to claim 1, which is characterized in that further include the linear seam parallel with the cathode plate
Gap --- sampling slit, for extracting the one-dimensional space information of optical signal.
3. scanning camera according to claim 1, which is characterized in that further include the object positioned at photocathode input path
Mirror, the object lens are used to for the space of object, temporal information being imaged on the photoemissive material after the sampling slit.
4. scanning camera according to claim 1, which is characterized in that the collimation accelerates electrode to have microwell array knot
Structure, the microwell array structure are laminated structure made of multiple hollow capillary micro-pipe two-dimensional arrangements, micro-pore diameter 5-20
Micron, hole length of tube are 0.1-0.5 millimeters, 2-10 microns are divided between micropore, its heading obtains when photoelectron passes through micro-pipe
Collimation.
5. scanning camera according to claim 4, which is characterized in that the microwell array form substrate includes metal, closes
At least one of gold, solid-state non-conductor of semiconductor and surface of the surface Jing Guo conductive processing Jing Guo conductive processing material.
6. scanning camera according to claim 4, which is characterized in that the collimation accelerates the collimator surface of electrode and micro-
The inner wall of pipe passes through conductive processing, so that collimator surface and micro-pipe inner wall surface are equipotentiality body.
7. scanning camera according to claim 1, which is characterized in that it further include communication system, the communication system and note
Recording system is connected, and the image information for obtaining the record system is transmitted to external whole with the signal type for transmission
End.
8. scanning camera according to claim 1, which is characterized in that further include: intelligence control system, scanning control system
And high voltage supply system, the intelligence control system are connected with scanning control system, streak tube, record system, the scanning control
System processed is connected with streak tube, intelligence control system, and the control system is used to make connected component accurate monitoring and control
System；The high voltage supply system and intelligence control system, scanning control system, streak tube component, communication system are electrical connected,
For powering.
9. scanning camera according to claim 8, which is characterized in that the intelligence control system is monitored comprising electrode voltage
Module, chamber environment monitoring module, electron focusing voltage control module, for ensuring that camera safely and effectively works:
The electrode voltage monitoring module and photocathode and anode are electrically connected, for monitoring inter-electrode voltage；
The chamber environment monitoring module includes temperature sensor and baroceptor, for monitoring the indoor chamber environment ginseng of gas
Amount；
The electron focusing voltage control module and electron focusing lens are electrically connected, for making accurately to electron focusing voltage
Control.
10. scanning camera according to claim 8, which is characterized in that the scan control module includes that scanning triggering is prolonged
When module, scan bias voltage module:
The scanning Time delay module and scan bias voltage module are electrically connected, and information are triggered in response to the external world, for the hair that is delayed
The signal of triggering is scanned out；
The scan bias voltage module and traveling wave deflector are electrically connected, in response to scanning trigger signal, for traveling wave deflector
Scan bias voltage make accurate control.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113192814A (en) * | 2021-03-25 | 2021-07-30 | 中国工程物理研究院激光聚变研究中心 | Hybrid magnetic focusing lens electron beam imaging system |
| WO2022021140A1 (en) * | 2020-07-29 | 2022-02-03 | 深圳大学 | Visible light streak tube and electron-optical imaging system |
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| CN113192814A (en) * | 2021-03-25 | 2021-07-30 | 中国工程物理研究院激光聚变研究中心 | Hybrid magnetic focusing lens electron beam imaging system |
| CN113192814B (en) * | 2021-03-25 | 2022-04-19 | 中国工程物理研究院激光聚变研究中心 | Hybrid magnetic focusing lens electron beam imaging system |
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