Safety device for e.g. door unit, has light transmitter and light receiver that are arranged at protection strip, such that transmitter radiates light outwards as distal light line for flank and frame for reflection at articles

摘要

The device has a light transmitter (13) and a light receiver (14) that are arranged at a protection strip in such a manner that the transmitter radiates light outwards as a distal light line for a flank and a frame for reflection at articles. The transmitter radiates light along the flank as a proximal, absorptive and/or diffuse light line for the flank and the frame for compulsory interference of light line on non-reflecting articles. An independent claim is also included for a method for protecting jamming of articles or human body parts between a frame and a flank.