发明名称 |
Reflection light barrier sensor |
摘要 |
<p>The sensor (10) has a sender unit (12) e.g. LED or infrared diode, sending transmission light (4) towards a retro-reflector (20). A receiver unit (26) receives received light (6) reflected by the reflector, and a beam splitter (18) is arranged in transmission and received light paths. A transmission polarizer (16) is arranged between a transmission imaging element (14) and the beam splitter. A receiving polarizer (22) is arranged between the beam splitter and a receiver imaging element (24) that is arranged adjacent to the beam splitter in a dispersion direction of the received light.</p> |
申请公布号 |
EP2256522(A1) |
申请公布日期 |
2010.12.01 |
申请号 |
EP20100004436 |
申请日期 |
2010.04.27 |
申请人 |
SICK AG |
发明人 |
WIETHEGE, FRIEDHELM;MEIER, ROLF;WAGNER, PHILIPP |
分类号 |
G01V8/14 |
主分类号 |
G01V8/14 |
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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