发明名称 |
Confocal, fiber optic pressure sensor for a combustion chamber |
摘要 |
<p>The measurement system incorporates an LED (21) sending light through a first optical fiber (22) to a Y-junction (23). Light travels through a second optical fiber (24) to a measurement head (25) containing an elongated cylindrical graduated refractive index lens (26). Light spreads out from the end of the fiber and is brought to a focus (29) just in front of a flexible membrane (8). Light reflected from the membrane (30) passes back through the lens. Some light passes back through the second optical fiber to the Y-junction and to a photodetector (33) connected to a signal interface (34) and a signal processing circuit (35).</p> |
申请公布号 |
EP1460400(A1) |
申请公布日期 |
2004.09.22 |
申请号 |
EP20040001270 |
申请日期 |
2004.01.22 |
申请人 |
ROBERT BOSCH GMBH |
发明人 |
QIU, QIANG |
分类号 |
G01L9/00;G01L23/16;(IPC1-7):G01L9/00;G01L23/06;G01L11/02 |
主分类号 |
G01L9/00 |
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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