Abstract: Mirror elements (2a, 2b) include a substrate (4a, 4b) and a multilayer arrangement (5a, 5b). The multilayer arrangement includes a reflective layer system (6a, 6b) having a radiation entrance surface (7a, 7b) and a piezoelectric layer (8a, 8b) arranged between the radiation entrance surface and the substrate. Each mirror element includes an electrode arrangement (9a, 9b, 9c) associated with the piezoelectric layer. A layer thickness (tp) of the piezoelectric layer is controlled by the electric field generated. An interconnection arrangement (10) electrically interconnects adjacent electrodes of adjacent electrode arrangements. According to one formulation, the interconnection arrangement generates an electric field in a gap region (11) between the adjacent electrodes.

Abstract: The invention relates to a Coriolis flow sensor. The sensor comprises a housing and at least a Coriolis-tube with at least two ends being fixed in a tube fixation means. The flow sensor comprises excitation means for causing the tube to oscillate, as well as detection means for detecting at least a measure of displacements of parts of the tube during operation. According to the invention, the Coriolis flow sensor comprises a reference mass, as well as further excitation means arranged for causing the reference mass to oscillate during operation, as well as further detection means for detecting at least a measure of displacements of the reference mass during operation. Additionally, control means are provided for controlling the excitation means and/or further excitation means based on vibrations measured by the detection means and/or further detection means. This way a Coriolis flow sensor with active vibration isolation is obtained.

Abstract: Mirror elements (2a, 2b) include a substrate (4a, 4b) and a multilayer arrangement (5a, 5b). The multilayer arrangement includes a reflective layer system (6a, 6b) having a radiation entrance surface (7a, 7b) and a piezoelectric layer (8a, 8b) arranged between the radiation entrance surface and the substrate. Each mirror element includes an electrode arrangement (9a, 9b, 9c) associated with the piezoelectric layer. A layer thickness (tp) of the piezoelectric layer is controlled by the electric field generated. An interconnection arrangement (10) electrically interconnects adjacent electrodes of adjacent electrode arrangements. According to one formulation, the interconnection arrangement generates an electric field in a gap region (11) between the adjacent electrodes.

Abstract: The invention relates to a Coriolis flow sensor. The sensor comprises a housing and at least a Coriolis-tube with at least two ends being fixed in a tube fixation means. The flow sensor comprises excitation means for causing the tube to oscillate, as well as detection means for detecting at least a measure of displacements of parts of the tube during operation. According to the invention, the Coriolis flow sensor comprises a reference mass, as well as further excitation means arranged for causing the reference mass to oscillate during operation, as well as further detection means for detecting at least a measure of displacements of the reference mass during operation. Additionally, control means are provided for controlling the excitation means and/or further excitation means based on vibrations measured by the detection means and/or further detection means. This way a Coriolis flow sensor with active vibration isolation is obtained.

Abstract: The invention relates to a device for controlling the pressure in a finger cuff, the device including: a first chamber in fluid connection with a finger cuff; a movable wall part defining at least a part of a wall of the first chamber; an air supply for supplying air to the first chamber and the finger cuff; and a pressure sensor for registering the pressure in the first chamber. The invention also relates to a blood pressure measuring device.