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US 5,332,896 AGranted
Instrument for producing harmonics-free periodic signals
AssigneeDr. Johanness Heidenhain GmbH
InventorWolfgang Holzapfel
Life of this patent
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Abstract
An instrument for obtaining harmonics-free signals with the aid of a periodic measurement graduation and a nonperiodic scanning graduation, wherein the centers of scanning graduation markings are staggered in accordance with a modified arcsin function.
Claims15
An instrument for obtaining harmonics-free signals up to a predeterminable bandwidth, comprising:
- a periodic measurement graduation comprising a plurality of periodically spaced measurement graduation markings;
- a scanning graduation comprising one or more scanning graduation markings which are offset from one another nonperiodically, such that the spacing of the scanning graduation marking centers is staggered by a modified arcsin function.
An instrument for obtaining harmonics-free signals up to a predeterminable bandwidth, comprising:
- a periodic measurement graduation comprising a plurality of periodically spaced measurement graduation markings;
- a scanning graduation comprising one or more scanning graduation markings which are shaped in accordance with a modified arcsin function.
Dependencies are inferred from the claim text.