| 摘要 |
Optical sensor (10) for monitoring a monitoring area (16), comprises: a detection device (12) for monitoring a detection zone (24) with the monitoring area, where the detection zone comprises a transmitter for transmitting the transmission light into the detection zone, a receiver for receiving a light that is reflected back, -emitted back, or transmitted through the detection zone; at least one test object (18) arranged within the detection zone of the optical sensor; and a device for preventing and/or eliminating the pollution present at the test object. |
