title: Diffractive incremental and absolute coding principle for optical rotary sensors.
abstract: Rotary sensors are an essential component in numerous applications where a rotation movement has to be detected. With optical encoders, a high angular resolution can be achieved. As a disadvantage, the resolution enhancement is associated with increasing cost. To overcome this issue, a coding principle is presented that uses a diffractive solid measure on a microstructured plastic disc. Like a DVD, this encoder disc can be manufactured in a cost effective injection molding process. For this approach, a differential incremental code, as well as an absolute code, has been developed.
authors.affiliation: Institut für Technische Optik (ITO), SCOPE, Universität Stuttgart, Stuttgart, Germany. hopp@ito.uni‐stuttgart.de
authors.forename: David
authors.initials: D
authors.lastname: Hopp
authors.forename: Christof
authors.initials: C
authors.lastname: Pruss
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Osten
authors.forename: Jonathan
authors.initials: J
authors.lastname: Seybold
authors.forename: Karl-Peter
authors.initials: KP
authors.lastname: Fritz
authors.forename: Tim
authors.initials: T
authors.lastname: Botzelmann
authors.forename: Volker
authors.initials: V
authors.lastname: Mayer
authors.forename: Heinz
authors.initials: H
authors.lastname: Kück