Patent ID: 8436290

Claim:
An optoelectronic sensor ( 10 ), in particular a light barrier having a light transmitter ( 14 ) for the transmission of a light beam ( 18 ) and a light receiver ( 26 ) arranged facing the light transmitter ( 14 ) at an alignment angle to transform the received light beam ( 18 ) into an electrical received signal, wherein the transmission power of the light transmitter ( 14 ) and/or the reception sensitivity of the light receiver ( 26 ) is/are set, such that the received signal has an intensity distribution varying in accordance with the alignment angle and wherein an evaluation unit ( 28 ) of the sensor ( 10 ) is configured to determine by means of the received signal whether the light beam ( 18 ) is interrupted or not, wherein the intensity distribution is stored in a memory ( 28 a ) of the sensor ( 10 ) and wherein the evaluation unit ( 28 ) is configured to determine, with reference to the measured intensity of the received signal from a measured intensity distribution, a lower threshold ( 38 ) and an upper threshold ( 40 ) whose separation corresponds to an accepted angular range.