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A photoelectric tube for measuring the transmittance of ultraviolet photocathode

An ultraviolet light and photocell technology, which is applied to discharge tubes that do not contain gas ionization, discharge tubes, and color/spectral characteristics measurement, etc. Effect

Active Publication Date: 2016-10-19
NORTH NIGHT VISION TECH
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Problems solved by technology

[0004] The main technical problems and objectives to be solved by the present invention are: according to the existing difficulties in measuring the transmittance of ultraviolet photocathode at present, a special photoelectric tube is designed to fundamentally overcome the problem of ultraviolet photocathode transmittance. Defects where cathode transmittance cannot be measured

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  • A photoelectric tube for measuring the transmittance of ultraviolet photocathode
  • A photoelectric tube for measuring the transmittance of ultraviolet photocathode
  • A photoelectric tube for measuring the transmittance of ultraviolet photocathode

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Embodiment Construction

[0017] Reference picture 2 , explain the technical solution of the present invention: the specific structure of the present invention is, by a Kovar alloy ring 7 , through oxygen-free copper gaskets at both ends 8 Each welding has a flange 9 , forming a tube shell, on the upper part of the tube shell, the flange 9 through indium tin alloy ( 13 ) sealed with a piece of quartz glass 10 , quartz glass 10 chrome-plated 11 , forming the cathode quartz glass input window, the quartz glass 10 Make a layer pair on the inner circle area of 200 — 320nm UV photocathode with photoemission in the wavelength range ( Cs 2 Te) 12 , in the lower part of the shell, the flange 9 Weld an anodic quartz glass output window of the same construction as the cathode quartz glass input window.

[0018] The Kovar Ring 1 , flange 9 The material is Kovar alloy, the grade is 4J34 ;Quartz glass 10 is commonly used quartz glass in the optical indus...

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Abstract

The invention discloses a photoelectric tube for measuring the transmittance of an ultraviolet photocathode, which is mainly used for measuring the transmittance of an ultraviolet photocathode of an ultraviolet image intensifier. The technical solution is: the structure of the photoelectric tube consists of a Kovar alloy ring, and a flange is welded at both ends to form a tube shell. On the upper part of the tube shell, the flange is sealed with quartz glass to form a cathode quartz glass input. Window, a layer of ultraviolet photocathode is made on the inner circle area of ​​the quartz glass, and an output window of anode quartz glass is welded on the flange plate at the lower part of the tube shell. The present invention proves through application: photoelectric tube can measure the transmittance of ultraviolet photocathode smoothly and accurately, in the development of ultraviolet photocathode, optimize the formula of ultraviolet photocathode, make the ultraviolet photocathode of high cathode sensitivity, for Improving the comprehensive technical performance of the UV image intensifier has played an obvious role.

Description

technical field [0001] The invention relates to a photocathode index measuring tool, which is mainly used for measuring the transmittance of an ultraviolet photocathode of an ultraviolet image intensifier. It can also be used for the measurement of similar indicators of other photoelectric devices. Background technique [0002] The ultraviolet image intensifier (see Figure 1) is mainly composed of a cathode quartz glass input window 1, an ultraviolet photocathode 2, a microchannel plate 3, a phosphor screen 4, an anode optical glass output window 5 and a tube shell 6. The main working principle: the ultraviolet light of the scene is incident on the ultraviolet photocathode 2 through the cathode quartz glass input window 1, and converted into an electronic image. The image is then output through the output window 5 of the anode optical glass for observation by the human eye. Ultraviolet image intensifiers have been used in the observation of missile incoming warnings, finge...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J40/16H01J40/06G01N21/33
Inventor 李晓峰李浩雷瞿利平冯辉
Owner NORTH NIGHT VISION TECH
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