Abstract: In a bearing support (10) for a laser resonator, adjacent support sections (11a, 11b) are directly and undetachably connected to each other by an articulated deflectable joint (12). An additional vertical safety on the bearing support is no longer necessary since the two support sections (11a, 11b) are already held together in a vertically secure manner by the articulated joint (12).

Abstract: A machine tool installation (1) for the processing of workpieces includes encompasses a work area (4) for the machining of workpieces and contains a workpiece support (13), a work area enclosure (3) featuring a gate (7) and at least one corresponding door segment (6/1, 6/2, 6/3) which can be moved in the horizontal direction between open and closed positions and is supported on the substructure of the machine installation (1) in horizontally movable fashion. Provided above the substructure of the machine tool installation (1), and attached solely to the workpiece support (13) is at least one stationary guide element (14, 15) for the door segments (6/1, 6/2, 6/3) and extending over at least part of the width of the gate.

Abstract: The invention relates to a device for the beam guiding of a laser beam with at least one optical element and with a housing that has a first housing section, which can be fitted at least partially into a support body of a power laser or beam guiding system or can be attached thereto, and a further housing section that at least partially encloses the optical element, wherein a one-piece housing is provided, into which the optical element can be fitted, and wherein a bearing surface for the optical element is provided, which bearing surface at least partially encloses the housing opening and has a coating with a surface that is harder than the housing material.