Patent ID: 7034280

Claim:
A light grid having a transmitter strip ( 1 ) for the transmission of a plurality of light beams ( 3 ) and a receiver strip ( 2 ) for the reception of these light beams ( 3 ), an evaluation unit ( 11 ) for the processing of received signals generated in dependence on the light beams ( 3 ) received and a memory ( 8 ) for reference values which can be compared with the received signals by means of the evaluation unit ( 11 ), characterized in that a position transducer ( 5 ) is provided for the determination of the position of an object ( 6 ) introduced into the monitored zone of the light grid ( 12 ); in that the evaluation unit ( 11 ) can be supplied with position signals delivered by the position transducer ( 5 ); and in that the comparison of the reference values with the received signals can be carried out in dependence on the position signals.