Detection of foreign matter and slag on table

The invention relates to a device for inspecting foreign matters (7) and/or deposits (4) on support elements (1) of a table (2), the support elements (1) being arranged to support a flat workpiece (10) for cutting by means of a laser or water jet, the support elements (1) being arranged parallel to one another and at a first distance from one another, the device comprises a sensor (5, 6) for detecting foreign matters (7) and/or deposits (4) in a space between two corresponding support elements (1). 本发明涉及一种用于检查工作台(2)的支承元件(1)上的异物(7)和/或沉积物(4)的装置，其中，支承元件(1)设置成支承平坦的工件(10)以通过激光或水射流进行切割，其中，支承元件(1)彼此平行布置并且彼此具有第一距离，该装置包括：用于检测两个相应的支承元件(1)之间的空间中的异物(7)和/或沉积物(4)的传感器(5、6)。