SU945923A1

SU945923A1 - Unit for matching modular optronic devices

Info

Publication number: SU945923A1
Application number: SU813240876A
Authority: SU
Inventors: Владимир Владимирович Афанасьев; Дмитрий Сергеевич Соколов; Игорь Константинович Махонин; Анатолий Матвеевич Мечетин; Владимир Леонидович Кузнецов
Original assignee: Предприятие П/Я А-3726
Priority date: 1981-01-23
Filing date: 1981-01-23
Publication date: 1982-07-23

Description

Изобретение относится к электровакуумному приборостроению, в частности к электронно-оптическим преобразователям (ЭОП), и может быть использовано при модульном сочленении различных электронно-оптических приборов между собой через волоконно-оптические пластины (ВОП), например при модульной сборке многомодульных ЭОП, сочленении ЭОП с передающими телевизионными трубками и т.д.·The invention relates to electrical vacuum instrumentation, in particular to electron-optical converters (EOP), and can be used in the modular articulation of various electron-optical devices together through fiber optic plates (VOP), for example, in the modular assembly of multi-module EOP, articulation of the EOP with transmitting television tubes, etc. ·

Известен узел сочленения двух камер ЭОПа с помощью промежуточной ВОП, на одной стороне которой выполнен люминесцентный экран первой камеры, а на другой - фотокатод второй камеры [1 ].The knot of articulation of two cameras of the image intensifier tube using an intermediate GP, on one side of which a luminescent screen of the first camera is made, and on the other - the photocathode of the second camera [1].

Недостатком известного устройства является невозможность использования прибора в случае технологического брака, допущенного при изготовлении, по крайней мере одной из камер.A disadvantage of the known device is the inability to use the device in the case of technological defects allowed in the manufacture of at least one of the cameras.

Наиболее близким по технической сущности к изобретению является узел сочленения модульных электронно-оптических приборов поверхностями волоконно-оптических пластин, образованных светопроводящими жилами, окруженными оболочками, через иммерсионную среду [2].Closest to the technical nature of the invention is the site of the junction of modular electron-optical devices with the surfaces of fiber-optic plates formed by light-guiding veins surrounded by shells through an immersion medium [2].

₁₀ Недостатком известного устройства является ухудшение частотно-контрастной характеристики, а при снижении контраста на предельно различимых глазом частотах ниже 3%~ предела ₁₅ разрешения. ₁₀ A disadvantage of the known device is the deterioration of the frequency-contrast characteristic, and when the contrast is reduced at frequencies that are extremely visible to the eye below 3% ~ the limit of ₁₅ resolution.

Ухудшение параметров изображения является следствием^во-первых, прохождения некоторой части кревых, вне* аппаратурных лучей излучения люмиΜ несцентного экрана со светопроводящих жил выходной ВОП в соседние оболочки и жилы входной катодной ВОП из-за недостаточного поглощения света стеклом светопоглощающей оболочки з 945923 4 волокон. Во-вторых, на ухудшение параметров изображения влияют многократные отражения краевых лучей между сочленяемыми поверхностями ВОП по прозрачной иммерсионной среде. Эти лучи вызывают паразитную фоновую засветку и снижают контраст изображения.The deterioration of the image parameters is a result of ^ firstly, the passage of a certain part of the hot, outside the * apparatus rays of the radiation of the luminescent screen from the light-conducting conductors of the output VOP to the neighboring shells and cores of the input cathode VOP due to insufficient light absorption by the glass of the light-absorbing shell with 945923 4 fibers. Secondly, multiple reflections of the edge rays between the articulated surfaces of the GP through a transparent immersion medium affect the deterioration of image parameters. These rays cause spurious background illumination and reduce image contrast.

Целью изобретения является ухудшение частотно-контрастной характеристики и предела разрешения прибора .The aim of the invention is the deterioration of the frequency-contrast characteristics and resolution limits of the device.

Цель достигается тем, что в узле сочленения модульных электронно-оптических приборов поверхностями волоконно-оптических пластин, образованных светопроводящими жилами, окруженными оболочками, через иммерсионную среду, по' крайней мере одна сочленяемая поверхность выполнена в виде структуры из выступов и углублений, причем углубления образованы в оболочках, а' светопропускание иммерсионной среды определено следующим соотношением:The goal is achieved by the fact that in the junction of modular electron-optical devices with the surfaces of fiber-optic plates formed by light-guiding veins surrounded by shells through an immersion medium, at least one articulated surface is made in the form of a structure of protrusions and recesses, and the recesses are formed in shells, and 'light transmission of the immersion medium is determined by the following relationship:

где с - концентрация вещества, выраженная числом молекул вещества в 1 м^;where c is the concentration of the substance, expressed by the number of molecules of the substance in 1 m ^;

m - молекулярный показатель ослабления; «m is the molecular attenuation index; "

- длина пути излучения в веществе, м.- the length of the radiation path in the substance, m

На чертеже представлена схема устройства.The drawing shows a diagram of the device.

Устройство содержит выходную (экранную) ВОП 1 первого модуля, входную (катодную) ВОП 2 второго модуля светопроводящие жилы 3 ВОП, оболочки 4 ВОП, углубления 5 в оболочках, иммерсионную среду 6.· Иммерсионная среда может представлять собой, например смолу Д-20.с добавлением мелкодисперсионной сажи.The device contains an output (screen) VOP 1 of the first module, input (cathode) VOP 2 of the second module, light-conducting conductors 3 VOP, shells 4 VOP, recesses 5 in the shells, immersion medium 6. · The immersion medium can be, for example, resin D-20. with the addition of fine soot.

Устройство работает следующим образом.The device operates as follows.

Излучение люминесцентного экрана через ВОП 1 первого модуля по единичным светопроводящим жилам 3 передается к сочленяемой поверхности и далее'через слой иммерсионной среды 6 на светопроводящие жилы 3 катодной ВОП 2 второго модуля. Угловое распределение излучения на выходе экранной ВОП 1 подчиняется закону Ламберта.The radiation of the luminescent screen through the VOP 1 of the first module is transmitted through a single light guide conductor 3 to the articulated surface and then through the layer of immersion medium 6 to the light guide cores 3 of the cathode VOP 2 of the second module. The angular distribution of radiation at the output of the screen VOP 1 obeys the Lambert law.

Применение иммерсионной среды со светопропусканием, зависящим от толщины слоя среды достигается более эффективное, чем в известном техничес5 ком решении, подавление краевых лучей из ламбертовского -распределения, направленных как вдоль иммерсионной .среды (под углом d), так и на заполненные иммерсионной средой уг10 лубления 5 (угол β) на границах, светопропускающих жил 3. Некоторое снижение светопропускания для нормальных к сочленяемым поверхностям ВОП лучей незначительно из-за малых тол15 щин иммерсионной среды в этих направлениях и практически не сказывается на характеристиках прибора в целом.The use of an immersion medium with light transmission depending on the thickness of the layer of the medium is more effective than in the known technical solution for suppressing edge rays from the Lambert distribution distributed both along the immersion medium (at an angle d) and to the extinction medium filled with the immersion medium 5 (angle β) at the boundaries of the light-transmitting veins 3. A slight decrease in light transmission for normal to articulated surfaces of the VOP rays is insignificant due to the small thicknesses of the immersion medium in these directions and in practice does not affect the characteristics of the device as a whole.

Claims

The invention relates to electrovacuum instrumentation, in particular, to electron-optical converters (GTP), and can be used for modular coupling of various electro-optical devices to one another via fiber-optic plates (GPM), for example, for modular assembly of a multi-modular image intensifier, articulation of the image intensifier with transmitting television tubes, etc. The articulation unit of two EOP chambers is known by means of an intermediate GP, on one side of which the luminescent screen of the first chamber is made, and on the other side the photocathode of the second chamber l. A disadvantage of the known device is the impossibility of using the device in the case of technological defects, made in the manufacture of at least one of the chambers. The closest to the technical essence of the invention is the articulation unit of modular electro-optical devices by the surfaces of fiber-optic plates formed by light-conducting cores surrounded by shells through immersion medium 2. A disadvantage of the known device is a decrease in the frequency-contrast characteristic. Contrast at the most visible frequencies below the resolution limit. The deterioration of the image parameters is a result of, firstly, the passage of a certain sunshine, outside the instrumental beams of radiation of the luminescent screen from the light-conducting veins of the output SPM into the adjacent shells and the GILL input cathode SPM due to insufficient light absorption by the glass of the light-absorbing fiber shell. Secondly, the deterioration of image parameters is influenced by multiple reflections of the edge rays between the articulated surfaces of the GPs along the transparent immersion front. These rays cause parasitic background illumination and reduce image contrast. The aim of the invention is to degrade the frequency-contrast characteristic and the resolution limit for boron. The goal is achieved by the fact that in the articulation unit of modular electron-optical devices by the surfaces of fiber-optic plates formed by light-conducting cores surrounded by shells, through an immersion medium, at least one articulated surface is made in the form of a structure of protrusions and angles. moreover, the depressions are formed in the shells, and the light transmission of the immersion medium is determined by the following relationship: where c is the concentration of the substance, expressed by the number of substance molecules in 1 molecular index weakened and; the length of the radiation path in the substance, m, drawing shows a diagram of the device. The device contains an output (screen) SPM 1 of the first module, an input (output) SPM 2 of the second module, light-transmitting cores 3 SPM, SPM shells, depressions 5 in the shells, immersion medium 6.- Immersion medium may be, for example, resin D- 20- With the addition of fine soot. The device works as follows. The radiation of the luminescent screen through the SPM 1 of the first module transmits by a single light guide veins 3 to the articulated surface and then through the layer of the immersion medium 6 to the light guide wires 3 of the cathode SPM 2 of the second module. The angular distribution of radiation at the output of the screen of the SPM 1 obeys the Lambert law. 4 The use of an immersion medium with light transmission, depending on the thickness of the medium layer, is achieved more effectively than in the known technical solution, the suppression of edge beams from the Lambert distribution directed both along the immersion medium (at an angle cL) and on the immersion medium 5 filled with an immersion medium 5 (yronfb) at the boundaries of the light-transmitting veins 3. Some decrease in the light transmission for normal to articulated surfaces of the SPM rays is insignificant. But due to the small thickness of the immersion medium in these directions and practices cally not skazyvaets on the characteristics of the device as a whole. The invention of the junction of modular electron-optical devices by the surfaces of fiber-optical plates formed by light-conducting cores surrounded by shells, through an immersion medium, characterized in that, in order to improve the frequency-contrast characteristic and the device resolution limit, at least one articulated surface is made in the form of a structure of protrusions and depressions, moreover, the depressions are formed in the shells, and the immersion medium is chosen with the light transmission defined by the following ratio: j;, g-mcg where c is the concentration of a substance, expressed by the number of molecules of the substance in 1. m is the molecular index of the J3 complex; 1 - radiation path length 0 substance, m. Sources of information taken into account during the examination 1.US Patent W 338351, cl. 250-213, publ. 1968.

2. Design documentation for the electron-optical converter EP-16, OC3.352.06it, drawings OS5.315. Sat and OS5.315.21 sat. M., 1980 (prototype).