Other

Bertold Deppisch

Gunther Krieg

Werner Helget

A method and apparatus for measuring a rotation angle. At least one rotatable optical grating is provided to be pivotal on a rotation axis relative to one or more slits parallel to the rotatable optical grating. The rotatable optical grating is radial to the rotation axis. To measure a rotation angle the rotatable optical grating is pivoted relative to at least one stationary optical grating which is radial to a center opposite to a center of the rotatable optical grating. An overlap area is defined between the two optical gratings and measurement of the relative movement between the rotatable optical grating and the stationary optical grating is detected by at least one photoelectric receiver.

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Pfinztal, Germany

Bertold Deppisch