High-resolution X-ray image enhancer

An image intensifier, high-resolution technology, applied in the direction of cathode ray/electron beam tube shell/container, image conversion/image amplifying tube, screen tube, etc., can solve the problem of low X-ray transmittance, poor contrast, scattering Serious problems, to achieve the effect of improving spatial resolution, improving contrast, and reducing scattering

Inactive Publication Date: 2009-10-14
陕西光电子先导院科技有限公司
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Problems solved by technology

[0003] The purpose of the present invention is to provide a high-resolution X-ray image intensifier, which solves the problems of low transmittance, poor contrast, serious scattering and high noise of X-rays in the existing X-ray image intensifier using titanium windows. question

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  • High-resolution X-ray image enhancer

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Embodiment Construction

[0018] The structure of the present invention see figure 1 and image 3 , including an input window 1, a reflective photocathode 3 sensitive to X-rays, a microchannel plate assembly, an output window 9 and a housing 10, wherein the input window 1, the output window 9 and the housing 10 constitute a vacuum seal 12, and the housing 10 includes sequentially Axially connected sealing ring 16, ceramic housing 14 and output window metal housing 15, input window 1 is a metal window 20 fixed in the middle of the front end of sealing ring 16, and metal window 20 is made of pure aluminum / pure beryllium material with a thickness of 0.3-2mm, preferably 0.5-1mm, effective diameter Ф18-Ф100mm, preferably Ф25-Ф100mm. The microchannel plate assembly comprises a pressure ring 4, a microchannel plate 5 and a tray 19 axially connected in sequence; the tray 19 is fixed in the middle of the ceramic shell 14, and the pressure ring 4 is fixed at the rear end of the sealing ring 16; the microchannel...

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Abstract

The invention relates to a high-resolution X-ray image intensifier, comprising an input window, a photocathode, a microchannel plate assembly, an output window and a casing; the output window includes a fluorescent screen, a phosphor layer and an aluminum film; the casing includes sequentially axially connected The sealing ring, the ceramic shell and the metal shell of the output window; the output window is sealed and fixed on the metal shell of the output window; the input window is the metal window sealed and fixed in the middle of the front end of the sealing ring; the material of the input window is metal aluminum or beryllium, sealed The material of the ring is Kovar 4J33, and the input window and the sealing ring are sealed by aluminum solder brazing. The invention solves the technical problems of low transmittance, poor contrast, serious scattering and high noise of the existing X-ray image intensifier using a titanium window, and has high transmittance and small scattering rate for X-rays , can reduce the diffusion time, transit time and space charge effect of electrons, reduce the noise of the X-ray image intensifier, and improve the contrast.

Description

technical field [0001] The invention relates to an image intensifier for an X-ray detection device. Background technique [0002] As one of the traditional non-destructive testing methods, X-ray testing is playing an increasingly important role in the field of industrial non-destructive testing. Especially with the rapid development of electronic technology, the miniaturization of packaging and the high density of assembly, and the continuous emergence of various new packaging technologies, the requirements for the quality of electronic assembly are getting higher and higher, so the inspection methods and technologies are put forward higher requirements. Automatic X-ray inspection technology (AXI) can not only detect invisible solder joints, such as BGA (Ball Grid Array Package), etc., but also perform qualitative and quantitative analysis on the detection results in order to find faults early. At the same time, due to the miniaturization of electronic products, the applic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J31/50H01J29/86
Inventor 赛小锋赵宝升曹希斌王俊锋韦永林邹玮董改云
Owner 陕西光电子先导院科技有限公司
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