Means for interrupting a light beam, particularly a laser light beam

The invention relates to a device (10) for interrupting a light beam, particularly a laser light beam, with a Lichtstrahlumlenkeinrichtung (24), wherein the Lichtstrahlumlenkeinrichtung (24) can be arranged in the beam path of the light beam. The device (10) is characterized in that the Lichtstrahlumlenkeinrichtung (24) to a flexible strip of material (18) is arranged, wherein the strip of material (18) is unilaterally supported at one end and at the retained end of the material strip (18) facing away from the area , preferably on both sides of the material strip provided (18), magnetizable or magnetic portions (20, 22) are arranged, wherein arranged for each of the strips of material (18) portion is a magnet (40, 42) is provided and wherein the sections (20, 22) respectively in engagement with the magnetic field of a respective magnet (40, 42) are or can be brought.