Patent ID: 8605293

Claim:
A deflection state sensor arranged to detect a deflection state of a movably arranged component with respect to its original deflection state, comprising: at least one channel which is implemented to guide electromagnetic radiation and direct the same to the component; at least one detector; and at least two back channels which are implemented to receive electromagnetic radiation reflected by the component and direct the same to the at least one detector; wherein the at least one detector comprises a plurality of detector elements; each of the at least two back channels is coupled to one of the plurality of detector elements; an evaluation circuit is connected to the plurality of detector elements, the evaluation circuit arranged to determine the deflection state of the component with respect to its original deflection state based on signals generated by the plurality of detector elements; the at least one channel and the at least two back channels are arranged with respect to each other such that the at least two back channels each receive a predefined portion of the electromagnetic radiation reflected by the component, when the component is in its original deflection state and when the component is in the deflection state to be determined by the evaluation circuit; and the component is supported rotatably around at least one axis.