Opto-electronic protection device operating method, involves partially deactivating image signals of monitoring devices, proportional to respective viewing angle of camera at zones and combining with switching signal in evaluating unit

摘要

The method involves arranging two monitoring devices (5, 6) in a housing at a distance from each other, where the devices have illuminating devices for illuminating a passage opening (2). An image recording camera is configured to produce an image of wall surfaces (3), limiting the opening on spatial opto-receivers (9). Image signals of the devices proportional to respective viewing angle of the camera, are partially deactivated at zones and are combined with a switching signal in an evaluating unit (12).