Patent ID: 8288707

Claim:
An optoelectronic sensor ( 14 ) having at least one light transmitter ( 16 ) for the transmission of light signals (s(t)) into a monitored zone ( 18 ) and having at least one light receiver ( 20 ) for the reception of light signals, wherein the received light signals (r(t)) are converted into electrical received signals in the light receiver, characterized in that the light signals (s(t)) transmitted by the light transmitter ( 16 ) are each generated on the basis of an output signal ( 60 ) spread in accordance with a frequency spreading technique (spread spectrum) and provided with an offset ( 22 ) applied for the generation of a unipolar signal; and in that means are provided to automatically measure repeatedly or continuously respective then current interference, to analyze it in the time domain and/or frequency domain; and to compensate it at least substantially in dependence on the respective result of the interference analysis.