Angular position sensor - has mirror or object deflecting light beam to annular sensor

摘要

The angle transducer for determining the rotation position of a component wrt. a fixed arrangement contains a fixed light source (1), a mirror (4) mounted on the component (6) which reflects the light beam and a sensor mounted in the reflected light beam which detects the light beam position. The beam (7) from the source is parallel to the rotation axis (5). The mirror surface is inclined wrt. the light beam so that reflected light falls on at least one CCD based annular sensor arrangement (2) concentric wrt. the rotation axis. ADVANTAGE - Achieves high resolution angular position measurement.