The present invention relates to a piezo actuator (10) in multilayer design, in which piezoelectric layers (14) and electrode layers (12) are arranged alternately one above the other to form a stack (16). Several of the electrode layers (12) are electrical...

Sun sensor comprising: - a transmissive and one-piece first modulator (1) for electromagnetic waves within a spectrum, - a further modulator (2) that is at most slightly transmissive for the electromagnetic waves within the spectrum, wherein - the further ...

The solar sensor has a modulator (1) i.e. prism, that is permeable to electromagnetic waves within certain spectrum and comprising polycarbonate. An additional modulator (2) i.e. prism holder, is slightly permeable to the waves. The additional modulator ha...