A light curtain component comprising a housing which extends essentially along a longitudinal direction, and having a plurality of optoelectronic emission or reception elements which are arranged in the housing and are oriented toward an upper side of the housing, and which are separated from one another along the longitudinal direction. The housing comprises, on a front side, a first planar front surface which is arranged at an angle (α) of less than 90°, preferably equal to 45°, with respect to the longitudinal direction. This first planar front surface allows joining two such light curtain components flush with one another in a corner, without undesired formation of dead or blind zones taking place.