Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2005-12-20
2005-12-20
Pyo, Kevin (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C250S231140, C250S227260, C356S616000
Reexamination Certificate
active
06977368
ABSTRACT:
A position measuring system that includes a scale and a scanning device that scans the scale. A light source, which emits a light pulse upon receipt of a request signal and an optical fiber that transmits the light pulse from the light source to the scanning device and for illuminating the scale. At least one photo detector that detects the light pulse affected by the scale as a function of its position.
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Drescher Jörg
Hausschmid Mathias
Holzapfel Wolfgang
Huber-Lenk Herbert
Reiter Herbert
Dr. Johannes Heidenhain GmbH
Pyo Kevin
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