Adjusting device particularly for light curtains or light barriers and method of adjusting

摘要

The adjusting device, especially for light barriers or light grills, has a housing upon which is directed a light beam (4) and in which are at least one focusing means (6) and at least one light guide (8) in such a way that a light entry aperture (10) of the light guide is located in a focal plane (12) of the focusing means, and a light emergence aperture (14) of the light guide is visible. The light emergence aperture of the light guide is attached outside the adjusting device. Independent claims are also included for the following: (A) a light barrier or light grill equipped with the aforesaid adjusting device; and (B) a method for the adjusting of a housing of especially a light grill or light barrier.