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Proceedings Paper

A novel diffractive encoding principle for absolute optical encoders
Author(s): D. Hopp; D. Wibbing; C. Pruss; W. Osten; J. Binder; W. Schinköthe; F. Sterns; J. Seybold; K.-P. Fritz; V. Mayer; H. Kück
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Paper Abstract

Rotary and linear position sensors are used in numerous manufacturing and automotive applications, where cost effectiveness and the ability of integration are major goals. To meet the increasing demand for competitive optical rotary encoders, in recent years a novel type of optical encoders have been proposed and demonstrated using a micro grating based encoding scheme. This proceeding will give details on the operation principle of this novel kind of position encoder and will show its performance on two exemplary implementations: A compact absolute rotary encoder with a micro-structured plastic disc, which can be manufactured in a conventional and cost effective DVD-molding process and a linear encoder which is based on a pseudo-random coding scheme. The implementation as well as results from their experimental characterization are presented.

Paper Details

Date Published: 27 May 2011
PDF: 15 pages
Proc. SPIE 8082, Optical Measurement Systems for Industrial Inspection VII, 80823T (27 May 2011); doi: 10.1117/12.891800
Show Author Affiliations
D. Hopp, Univ. Stuttgart (Germany)
D. Wibbing, Festo AG & Co. KG (Germany)
C. Pruss, Univ. Stuttgart (Germany)
W. Osten, Univ. Stuttgart (Germany)
J. Binder, Festo AG & Co. KG (Germany)
W. Schinköthe, Univ. Stuttgart (Germany)
F. Sterns, Univ. Stuttgart (Germany)
J. Seybold, Hahn-Schickard-Gesellschaft Institut für Mikroaufbautechnik (Germany)
K.-P. Fritz, Hahn-Schickard-Gesellschaft Institut für Mikroaufbautechnik (Germany)
V. Mayer, Hahn-Schickard-Gesellschaft Institut für Mikroaufbautechnik (Germany)
H. Kück, Hahn-Schickard-Gesellschaft Institut für Mikroaufbautechnik (Germany)


Published in SPIE Proceedings Vol. 8082:
Optical Measurement Systems for Industrial Inspection VII
Peter H. Lehmann; Wolfgang Osten; Kay Gastinger, Editor(s)

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