Device and method for torque measurement

A device for torque measurement on a shaft-comprising:

• a first encoder structure, which is coupled to a first shaft section of the shaft for conjoint rotation and is arranged around the shaft;
• a second encoder structure, which is coupled to a second shaft section of the shaft for conjoint rotation and is arranged around the shaft;
• wherein the first encoder structure and the second encoder structure are rotatable relative to one another in a case of a torque to be transmitted via the shaft;
• at least one transmitter configured to transmit millimeter waves in direction of the first encoder structure and the second encoder structure;
• at least one receiver configured to receive millimeter waves reflected or allowed to pass by the first encoder structure and second encoder structure, and to generate at least one reception signal;
• and
• a processor configured to determine the torque transmitted by the shaft based on the at least one reception signal.