发明名称 |
X-ray image intensifier with high x-ray conversion efficiency and resolution ratios |
摘要 |
A new type x-ray image intensifier has a specially developed x-ray sensitive photocathode which has a low/high density alkali halogenide structure and therefore has high conversion efficiency of converting x-ray directly into photoelectrons or a field-assisted x-ray photocathode which has an extracting field and therefore is able to provide a high conversion efficiency of x-ray to photoelectron and high spatial resolution, even high time resolution. The new type x-ray image intensifier consists of the x-ray photocathode, a MCP and a phosphor screen, forming a proximity focus type photoelectric imaging device. A new portable x-ray diagnosis unit has the new type x-ray image intensifier and a new type compact x-ray source that has a very small volume, 30-90 kv acceleration voltage and a cone protective cover at the outlet of x-ray.
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申请公布号 |
US5623141(A) |
申请公布日期 |
1997.04.22 |
申请号 |
US19940322502 |
申请日期 |
1994.10.14 |
申请人 |
XIAN INSTITUTE OF OPTICS & PRECISION MECHANICS, ACADEMIA SINICA |
发明人 |
HOU, XUN;LIU, XIUQIN;DING, KEZHOU |
分类号 |
G01T1/28;G21K4/00;H01J31/50;(IPC1-7):H01J40/14 |
主分类号 |
G01T1/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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