Abstract: A welding optical unit includes a collimator for collimating a laser beam, a focusing device for focusing the laser beam toward a workpiece, an adjustable beam shaper configured to shape the laser beam. The beam shaper includes a beam subdivision assembly that includes a cylindrical lens pair comprising two cylindrical lenses with diametrically opposite focal lengths and mutually parallel optical planes. The two cylindrical lenses extend with a curve on at least one side with respect to a common refraction direction perpendicular to the optical planes, and extend translationally invariantly with respect to a common non-refraction direction parallel to the optical planes. The refraction direction and the non-refraction direction extend perpendicularly to the optical axis of the welding optical unit. The welding optical unit further includes a spot distance adjusting device configured to displace the two cylindrical lenses relative to one another with respect to the refraction direction.

Abstract: A micromechanical pressure sensor system, including: a substrate; a pressure sensor component connected to the substrate; and an essentially hollow frustum-shaped sleeve structure, which is connected to the substrate, which surrounds the pressure sensor component at least laterally and which has an opening at a side of the sleeve structure facing away from the substrate.

Abstract: A method for manufacturing a MEMS sensor. The method includes: providing a substrate, applying a support layer onto a back side of the substrate, forming at least one cavity in the substrate in such a way that an access to the back side from the front side is formed, introducing a MEMS structure into the at least one cavity, and fixing the MEMS structure on the support layer.

Abstract: A device is described for protecting components, housings and the like against liquids and for ventilating the same, including at least one first layer, the first layer being configured as a diaphragm and this has a first area in such a way that the first area is configured as gas-permeable and liquid-tight below a first liquid pressure, and at least one second layer, the second layer being connected pressure-tight at least in part to the first layer, and having a second area that is configured in such a way that the first area and the second area interact for sealing against a liquid at a liquid pressure greater than or equal to the first liquid pressure.

Abstract: A method for producing a plurality of sensor devices. The method includes: furnishing a substrate having contact points in a plurality of predetermined regions for sensor chips; disposing the sensor chips in the predetermined regions on the substrate, and electrically contacting the sensor chips to the contact points; attaching a frame structure with an adhesive material on the substrate and between the sensor chips, the frame structure proceeding laterally around the sensor chips, the frame structure extending, after attachment, vertically beyond the sensor chips and forming a respective cavity for at least one of the sensor chips, and a membrane spanning at least one of the cavities for the sensor chips so as to cover it; and singulating the substrate, or the frame structure and the substrate, around the respective cavities into several sensor devices.

Abstract: A method for manufacturing a MEMS sensor. The method includes: providing a substrate, applying a support layer onto a back side of the substrate, forming at least one cavity in the substrate in such a way that an access to the back side from the front side is formed, introducing a MEMS structure into the at least one cavity, and fixing the MEMS structure on the support layer.

Abstract: A method for manufacturing a micromechanical component having a disengaged pressure sensor device includes: configuring an electrically conductive sacrificial element in or on a first outer surface of a first substrate; applying a second substrate on or upon the outer surface of the first substrate over the sacrificial element; configuring a pressure sensor device by anodic etching of the second substrate; configuring in the second substrate at least one trench that extends to the sacrificial element; and at least partly removing the sacrificial element in order to disengage the pressure sensor device.

Abstract: A method for manufacturing a micromechanical component having a disengaged pressure sensor device includes: configuring an electrically conductive sacrificial element in or on a first outer surface of a first substrate; applying a second substrate on or upon the outer surface of the first substrate over the sacrificial element; configuring a pressure sensor device by anodic etching of the second substrate; configuring in the second substrate at least one trench that extends to the sacrificial element; and at least partly removing the sacrificial element in order to disengage the pressure sensor device.

Abstract: A micromechanical pressure sensor system, including: a substrate; a pressure sensor component connected to the substrate; and an essentially hollow frustum-shaped sleeve structure, which is connected to the substrate, which surrounds the pressure sensor component at least laterally and which has an opening at a side of the sleeve structure facing away from the substrate.

Abstract: A sensor and/or sound detection device having a sensing device having a sensitive surface, an access channel being designed in such a way that air and/or a gas is transferable through the open access channel between a spatial surroundings of the sensor/detection device and the sensitive surface, and an at least partially water-impermeable membrane having respectively an inner side of the membrane facing the associated access channel being designed in such a way that a contact surface on the respective inner side of the respective membrane is pressed against an associated membrane contact surface on the associated access channel in such a way that the associated access channel is sealed in a liquid-tight manner when an outer side of the respective membrane or a covering layer on the respective outer side of the membrane is wetted with at least a minimum quantity of liquid and the respective membrane is deformed.

Abstract: A device is described for protecting components, housings and the like against liquids and for ventilating the same, including at least one first layer, the first layer being configured as a diaphragm and this has a first area in such a way that the first area is configured as gas-permeable and liquid-tight below a first liquid pressure, and at least one second layer, the second layer being connected pressure-tight at least in part to the first layer, and having a second area that is configured in such a way that the first area and the second area interact for sealing against a liquid at a liquid pressure greater than or equal to the first liquid pressure.

Abstract: A micromechanical system including a sensitive element, the system including a first area in which the sensitive element is situated, and a second area which at least partially surrounds the first area. Furthermore, the system includes a holding element having an elastic property, which joins the first area to the second area, and a joining material, with the aid of which the second area may be joined to a substrate. A spacing area is provided between the first area and the second area. The joining material extends into the spacing area so that a possible movement of the first area caused by the elastic property of the holding element is limited.

Abstract: A sensor and/or sound detection device having a sensing device having a sensitive surface, an access channel being designed in such a way that air and/or a gas is transferable through the open access channel between a spatial surroundings of the sensor/detection device and the sensitive surface, and an at least partially water-impermeable membrane having respectively an inner side of the membrane facing the associated access channel being designed in such a way that a contact surface on the respective inner side of the respective membrane is pressed against an associated membrane contact surface on the associated access channel in such a way that the associated access channel is sealed in a liquid-tight manner when an outer side of the respective membrane or a covering layer on the respective outer side of the membrane is wetted with at least a minimum quantity of liquid and the respective membrane is deformed.

Abstract: A micromechanical system including a sensitive element, the system including a first area in which the sensitive element is situated, and a second area which at least partially surrounds the first area. Furthermore, the system includes a holding element having an elastic property, which joins the first area to the second area, and a joining material, with the aid of which the second area may be joined to a substrate. A spacing area is provided between the first area and the second area. The joining material extends into the spacing area so that a possible movement of the first area caused by the elastic property of the holding element is limited.