Rotational angle sensor for contactless determination of rotational angle of rotational axis, comprises optical radiation source and detector, where shading structure is arranged in beam path between radiation source and detector

摘要

The rotational angle sensor comprises an optical radiation source (1) and a detector (2), where a shading structure is arranged in a beam path between the radiation source and the detector, whose position changes with a rotational axis (D). A rotational angle of the rotational axis is provided, such that the shading structure is partly illuminated by a radiation (3) of the radiation source depending on the angle of rotation of the rotational axis. The shading structure is formed on glass or on translucent plastic material.