发明授权
- 专利标题： Field emission cathode and x-ray tube embodying same
- 专利标题（中）： 场发射阴极和x射线管体现
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申请号： US12478052申请日： 2009-06-04
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公开(公告)号： US07778391B2公开(公告)日： 2010-08-17
- 发明人: Jens Fuerst , Stefan Popescu , Georg Wittmann
- 申请人： Jens Fuerst , Stefan Popescu , Georg Wittmann
- 申请人地址： DE Munich
- 专利权人： Siemens Aktiengesellschaft
- 当前专利权人： Siemens Aktiengesellschaft
- 当前专利权人地址： DE Munich
- 代理机构： Schiff Hardin LLP
- 优先权： DE102008026634 20080604
- 主分类号： H01J35/00
- IPC分类号： H01J35/00
摘要：
A field emission cathode has a field emitter and an extraction grid, and the field emitter and the extraction grid can be moved relative to one another. Such a field emission cathode is highly durable and exhibits a longer lifespan. An x-ray tube has a field emission cathode composed of a field emitter and an extraction grid that can be moved relative to one another. Such an x-ray tube is highly durable and exhibits a longer lifespan.
公开/授权文献
- US20090304157A1 FIELD EMISSION CATHODE AND X-RAY TUBE EMBODYING SAME 公开/授权日：2009-12-10
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