发明名称 |
Ceramic envelope device, lamp with such a device, and method of manufacture of such devices |
摘要 |
<p>This invention involves a new type of feedthrough-plug member for metal halide HID lamp using PCA envelopes. The construction of the lamp housing consists of a PCA envelope and specially designed radially graded alumina-metal cermet multi-layers to eliminate cracking in cermet or PCA due to thermal stresses arising from thermal expansion mismatch. The fills are metal halides such as Na-Sc-I, rare earth halides, Hg, Sn, and inert gases. The PCA vessel and directly sealed cermet-feedthrough assemblies allow the metal halide lamps to operate at high wall temperatures with better lumen output, color temperature, and CRI. <IMAGE></p> |
申请公布号 |
EP0887838(A2) |
申请公布日期 |
1998.12.30 |
申请号 |
EP19980110053 |
申请日期 |
1998.06.03 |
申请人 |
OSRAM SYLVANIA INC. |
发明人 |
WEI, GEORGE C.;JUENGST, STEFAN, DR. |
分类号 |
H01J9/32;H01J61/30;H01J61/36;H01J61/82;(IPC1-7):H01J61/36 |
主分类号 |
H01J9/32 |
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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