| 摘要 |
A position-measuring device includes a code and a scanning unit. The code includes a sequence of code elements arranged one after the other in a measuring direction, at least two successive code elements in each case forming one code word having position information. The scanning unit includes a lighting unit for emitting directed light in the direction of the code for imaging at least the code elements forming code word onto a detector unit, the detector unit having in measuring direction at least two detector elements per code element forming code word, as well as an evaluation unit in which the code word having the instantaneous position information is ascertainable from the detector signals of the detector elements. The scanning unit and the code are arranged in a manner allowing movement relative to each other in measuring direction. The detector signals to be evaluated for forming the code word are selectable in the evaluation unit as a function of the imaging of the code elements forming code word onto the detector unit.
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