Brinks Hofer Gilson & Lione
Position measuring system
A position measuring system that includes a graduation support having a measuring graduation, a planar waveguide and a light source that generates light that is conducted to the measuring graduation, wherein the light is reflected at surfaces of the planar waveguide. A scanning unit for scanning the measuring graduation that includes a light-sensitive scanning area to which light modulated by the measuring graduation is conducted. The modulated light conducted to the light-sensitive scanning area has at least two different light portions, which differ in a number of reflections at the surfaces of the planar waveguide, and wherein the reflecting of the at least two different light portions occurs prior to reaching the measuring graduation.
Dr. Johannes Heidenhain GmbH
G G G
G02B G01D G02B
inventional inventional additional
Siegfried Wolfgang
Reichhuber Holzapfel