Heimann Gmbh

Heimann Optoelectronics Gmbh

Enno Holzenkaempfer

Manfred Dennhoven

Ulrich Traupe

Mario Gauer

Wolfgang Hennerici

Frank Fichtner

Gerhard Brunst

A position transmitter for acquiring the position of a light beam has at least one group of photodiodes arranged neighboring one another and fashioned strip-shaped such that at least two, typically 5-10, strip-shaped electrodes of a photodiode structure are at least partially covered by the light beam or particle beam whose position is to be acquired. An evaluation circuit measures the photocurrent or a correlated quantity of the individual strip electrodes and indicates the position of the beam on the basis of the distribution of the strengths of the photo currents.

Position transmitter for acquiring the position of a light beam

A position sensor for supplying digital signals corresponding to the position of a movable part in non-contacting, reliable fashion. A number of individual electrodes are applied on a substrate with a layer of a-Si:H applied thereon. A common, large-area collector electrode is applied over the a-Si:H layer. A light beam is moved over the collector electrode to activate a predetermined combination of photosensitive pixels which may be photodiodes or photoresistors. These pixels are situated between the individual electrodes and the common collector electrode. The output signals of the photodiodes are in the form of a digital code that characterizes the location of the light beam.

Digital position sensor for indicating the relative position of

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Taunusstein, Germany

Enno Holzenkaempfer