| 摘要 |
<p>The sensor (100) has a control and evaluation unit (50) for controlling of a transmitter unit (20) and a receiver unit (30) for evaluation of signals detected from the receiver unit and for reading a switch signal. A light collector has a paraboloid concave mirror (40) for conduction of the light of an object in a distal region (14). The receiver unit has a detector (32), which is positioned in a focal region of the concave mirror. A separate reflector element (61) is arranged and positioned in a close-up region on the detector for conducting the light of the object.</p> |
