Optoelectronic security system

The invention relates to an optoelectronic security system comprising a plurality of light transmitters in a light grid arrangement for the transmission of light signals into a monitored zone, at least one spatially resolving light reception unit for the reception of the light signals transmitted by the light transmitters and a read-out circuit for the reading out of the signals of the at least one light reception unit. In accordance with the invention, the optoelectronic security system has an evaluation device which is configured such that it can split the surface of the at least one light reception unit into at least two processing regions in dependence on a predetermined selection criterion and can further process the signals of the at least two processing regions differently. The invention furthermore relates to an alignment method for an optoelectronic security system in accordance with the invention and to a method of operating an optoelectronic security system in accordance with the invention which has been aligned using the alignment method in accordance with the invention.