CN1086347A - A kind of double close-up framming image intensifier - Google Patents
A kind of double close-up framming image intensifier Download PDFInfo
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- CN1086347A CN1086347A CN 93109513 CN93109513A CN1086347A CN 1086347 A CN1086347 A CN 1086347A CN 93109513 CN93109513 CN 93109513 CN 93109513 A CN93109513 A CN 93109513A CN 1086347 A CN1086347 A CN 1086347A
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- photocathode
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Abstract
A kind of double close-up framming image intensifier, feature of the present invention is a plurality of little photocathode that photocathode is made into mutually insulated, therefore can obtain a plurality of picture frames of arrangement chronologically, shortcoming such as fundamentally overcome in the past framing image-converter tube complex structure, cost height, resolution is not high and dynamic range is little.
Description
The invention belongs to photoelectronic imaging device technology field.
Make a general survey of the research situation of various countries, the world today in the framing image-converter tube technical field, desire microsecond to nanosecond time domain obtain the picture frame of a certain transient process, all use various framing image converter tubes, it can be divided into following several on principle: (1) adopts the electron beam way by image converter tube, with the fast gate action of realizing repeating, then fluoroscopic diverse location is arrived in the electron beam image drift of passing through in the different exposure time, form picture frame; (2) cancellation the ending of electron beam is dynamically to reach as the repeatedly reflection in the storage part and deflection in even crossed electric and magnetic field by the electron beam picture and adopt electron beam Storage Techniques, framing; (3) do not have the storage of electron beam and, realize exposure by the small-bore of crossover place aperture plate, add in the pipe synchronization action of compensating plate and displacement plate and realize that framing photographs by scanning picture by effect; (4) multichannel framing technology promptly with the single width image converter tube or the single width double close-up image intensifier of plurality of parallel, carries out several shootings by the required time sequence.In above-mentioned these prior arts, total characteristics are image converter tube complex structures, and manufacture difficulty is very high, and electronic control circuit is very complicated, specification requirement harshness, price height, and its spatial resolution of branch images that what is more important obtained is not high, dynamic range is little.And adopt the single width double close-up image intensifier of plurality of parallel to obtain multiple image, though can remedy above-mentioned deficiency in the part, also there is the shortcoming that the complete machine structure complexity is huge, valency is high.
The purpose of this utility model is exactly at the shortcoming in the existing framing technology, designs a kind of double close-up framming image intensifier, makes a booster can obtain multiple image, to solve the above-mentioned shortcoming that exists.
Double close-up focuses on casting image intensifier and generally all is made up of photocathode, microchannel plate, three parts of phosphor screen and shell, booster can only become single image, its sealing-in, shelve, high-tech such as vacuum is all ripe day by day, can be referring to CNZL93104172.4, CNZL91227072.1, CNZL87106900, CNZL89221880.0 and Chinese Academy of Sciences's Xi'an ray machine " " double close-up focusing booster " development report and testimonial " in 1987.Its know-why be with from the image of target through the optical system imaging on photocathode, photocathode converts optical image to the electron beam image, the input that electron beam enters microchannel plate then is enhanced, quicken the impact fluorescence screen by nearly subsides district, electron image is converted to the visible light image, adopt microchannel plate as electron multiplier.It has the characteristics of response time weak point and high electron gain, and its each micro channel is equivalent to an independently electron multiplier, corresponding pixel of passage when being used for the electron image enhancing.Usually the spacing between photocathode and the microchannel plate input face is 0.1mm, and the distance between microchannel plate output face and the phosphor screen is 1mm.
The invention is characterized in that the photocathode that double close-up focuses on image intensifier is made as the little photocathode (being illustrated in figure 2 as 4) of several mutual insulatings, and extracting power supply cord from each little photocathode respectively; Optical system can become several the identical pictures from target on a plurality of little photocathodes simultaneously; Aspect circuit, microchannel plate and between the phosphor screen being common DC operation state, microchannel plate input face connecting to neutral volt voltage, for cut-off beam, a plurality of little photocathodes add identical positive cut-ff voltage simultaneously, and each little photocathode adds negative pulse voltage and opens nearly subsides pipe in chronological order then, then just can obtain required a plurality of separation pictures of arranging in chronological order, it is square wave that institute adds electric pulse waveform, as shown in Figure 3.Because each little photocathode all is in nearly subsides pipe by operating state before and after exposure, therefore the irradiation of luminous object is inoperative before and after the exposure, thereby reaches the purpose of framing.
The invention is characterized in that booster is made of photocathode, microchannel plate, phosphor screen and the outside shell of inside, the vacuum degree of inner confined space is 10
-6More than the mmHg; The concave surface of booster input is photocathode glass substrate and photocathode glass ring, and the flange of input is photocathode indium sealing groove and ring, and the framing power line of photocathode is derived by the glass marble on this flange; The concave surface of booster output is that phosphor screen can cut down ring, and phosphor screen can cut down hoop and extend into flange into output outward; The formation of shell is followed successively by from input to output: photocathode indium seal ring, ceramic ring, transition sealing ring, ceramic ring, microchannel plate support ring, ceramic ring, sealing ring.
Feature of the present invention is that also photoelectric cathode materials can be polybase, two alkali or antimony caesium, to the visible light sensitivity; Also can be that gold is to ultraviolet light and X ray sensitivity; Also can be that cesium iodide is to the grenz ray sensitivity.The zone of on photocathode substrate glass face, cutting apart a plurality of mutual insulatings, net conductive substrates in pressed metal is made a plurality of little photocathodes thereon again, and a plurality of framing power lines and photocathode glass ring sintering are together, after photocathode was aluminized, the framing power line was communicated with photocathode.
Feature of the present invention also is, selects the fluorescent material of long afterglow, high conversion efficiency for use, prepares the phosphor screen of anti-high field intensity on the screen glass substrate face.
Accompanying drawing 1 is the structural representation of the designed double close-up framming image intensifier of the present invention, and accompanying drawing 2 is cut apart schematic diagram for 4 little photocathodes of designed booster, and accompanying drawing 3 is framing shutter pulse waveform schematic diagrames required for the present invention.Among the figure, 1 is photocathode, and 2 is the photocathode glass ring, and 3 is the framing power line, 4 is glass marble, and 5 is photocathode indium seal ring, and 6 is the indium sealing groove, 7 is ceramic ring, and 8 is sealing ring, and 9 can cut down ring for phosphor screen, 10 is the microchannel plate support ring, and 11 is the microchannel plate pressure ring, and 12 is the transition sealing ring, 13 is the screen glass substrate, and 14 is microchannel plate, and 15 is phosphor screen, 16 is the photocathode glass substrate, and 17 is insulating tape, and 18 is the S that obtains on 4 little photocathodes
1, S
2, S
3, S
4Four width of cloth images.In the accompanying drawing 3, tg is every width of cloth time for exposure, and ta is picture blanking time.
1,2,3 double close-up framming image intensifiers that designed and produced a kind of φ 50mm can obtain φ 15mm four width of cloth images with reference to the accompanying drawings, and basic mechanical design feature is: the gain of light＞10
4, dynamic space resolution 25 lines are right/millimeter, and dynamic range 10
4, time for exposure 〉=1ns has very strong anti-electromagnetic interference capability, can use under several ten thousand Gauss's high-intensity magnetic field conditions.
The present invention constitutes a kind of novel double close-up framming image intensifier camera with its unique advantage, can be widely used in fields such as photochemistry, photobiology, Condensed Matter Physics, laser physics, laser spectroscopy, medical science, human knowledge's nature further be disclosed objective law have important value.
Claims (4)
1, a kind of double close-up framming image intensifier is to be made of the photocathode of inside, microchannel plate, phosphor screen and outside shell, it is characterized in that the inner space is 10
-6The vacuum degree that mmHg is above; Photocathode is made into the little photocathode of a plurality of mutual insulatings, and extracting power supply cord from each little photocathode respectively; Optical system can become several the identical pictures from target on a plurality of little photocathodes simultaneously, and the photoelectron that is sent by each little photocathode quickens a plurality of optical images of arranging chronologically of impact fluorescence screen output by nearly subsides district after microchannel plate strengthens.
2, booster according to claim 1 is characterized in that, photocathode can be to the polybase of visible light sensitivity or two alkali or antimony caesium material, also can be the gold to ultraviolet, X ray sensitivity, also can be the cesium iodide to the grenz ray sensitivity; The zone of on the photocathode glass substrate, cutting apart a plurality of mutually insulateds, net conductive substrate in pressed metal is made a plurality of little photocathodes on conductive substrate again, and framing power line and photocathode glass ring sintering are together, after photocathode was aluminized, the framing power line was communicated with photocathode; It is square wave that institute adds impulse waveform.
3, booster according to claim 2, it is characterized in that, the concave surface of booster input is photocathode glass substrate and photocathode glass ring, and the flange of input is photocathode indium seal ring and indium sealing groove, and the framing power line of photocathode is derived by the glass marble on this flange; The concave surface of its output is that screen glass substrate and phosphor screen can cut down ring, can cut down hoop and extend into flange into output outward; The formation of shell is followed successively by from input to output: photocathode indium seal ring, ceramic ring, transition sealing ring, ceramic ring, microchannel plate support ring, ceramic ring, sealing ring.
4, according to claim 2 or 3 described boosters, it is characterized in that, select the fluorescent material of long afterglow high conversion efficiency for use, on the screen glass substrate face, prepare the phosphor screen of anti-the high field intensity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93109513 CN1086347A (en) | 1993-03-04 | 1993-03-04 | A kind of double close-up framming image intensifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93109513 CN1086347A (en) | 1993-03-04 | 1993-03-04 | A kind of double close-up framming image intensifier |
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| CN1086347A true CN1086347A (en) | 1994-05-04 |
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| CN 93109513 Pending CN1086347A (en) | 1993-03-04 | 1993-03-04 | A kind of double close-up framming image intensifier |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100397548C (en) * | 2001-10-09 | 2008-06-25 | Itt制造企业公司 | Intensified hybrid solid-state sensor |
| CN100479086C (en) * | 2005-06-07 | 2009-04-15 | 中国科学院西安光学精密机械研究所 | Wide time-resolved microchannel plate framing image converter tube |
| CN1959912B (en) * | 2006-10-20 | 2010-05-12 | 四川天微电子有限责任公司 | Indium seal type luminescent screen, and technique for preparing the display tube of using the luminescent screen |
| CN105140084A (en) * | 2015-07-24 | 2015-12-09 | 北方夜视技术股份有限公司 | Fabrication method of sodium-cesium-antimony bialkali photocathode |
| CN111584333A (en) * | 2020-06-19 | 2020-08-25 | 西安中科英威特光电技术有限公司 | Method for realizing high-speed multi-frame imaging and photoelectric imaging device |
| CN111610002A (en) * | 2020-05-27 | 2020-09-01 | 北方夜视技术股份有限公司 | Method for measuring cathode close-proximity distance of image intensifier |
| CN113140439A (en) * | 2021-04-13 | 2021-07-20 | 江苏常宁电子有限公司 | Clinging focusing type photomultiplier convenient to assemble |
-
1993
- 1993-03-04 CN CN 93109513 patent/CN1086347A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100397548C (en) * | 2001-10-09 | 2008-06-25 | Itt制造企业公司 | Intensified hybrid solid-state sensor |
| CN100479086C (en) * | 2005-06-07 | 2009-04-15 | 中国科学院西安光学精密机械研究所 | Wide time-resolved microchannel plate framing image converter tube |
| CN1959912B (en) * | 2006-10-20 | 2010-05-12 | 四川天微电子有限责任公司 | Indium seal type luminescent screen, and technique for preparing the display tube of using the luminescent screen |
| CN105140084A (en) * | 2015-07-24 | 2015-12-09 | 北方夜视技术股份有限公司 | Fabrication method of sodium-cesium-antimony bialkali photocathode |
| CN105140084B (en) * | 2015-07-24 | 2017-04-19 | 北方夜视技术股份有限公司 | Fabrication method of sodium-cesium-antimony bialkali photocathode |
| CN111610002A (en) * | 2020-05-27 | 2020-09-01 | 北方夜视技术股份有限公司 | Method for measuring cathode close-proximity distance of image intensifier |
| CN111610002B (en) * | 2020-05-27 | 2021-11-05 | 北方夜视技术股份有限公司 | Method for measuring cathode close-proximity distance of image intensifier |
| CN111584333A (en) * | 2020-06-19 | 2020-08-25 | 西安中科英威特光电技术有限公司 | Method for realizing high-speed multi-frame imaging and photoelectric imaging device |
| CN111584333B (en) * | 2020-06-19 | 2023-06-02 | 西安中科英威特光电技术有限公司 | Method for realizing high-speed multi-image and photoelectric imaging device |
| CN113140439A (en) * | 2021-04-13 | 2021-07-20 | 江苏常宁电子有限公司 | Clinging focusing type photomultiplier convenient to assemble |
| CN113140439B (en) * | 2021-04-13 | 2023-06-27 | 江苏常宁电子有限公司 | Close-fitting focusing type photomultiplier convenient to assemble |
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