Avago Technologies Fiber IP (singapore) Pte. Ltd

Faber-castell Ag

Technische Hochschule Georg Simon Ohm

Avago Technologies General IP Pte, Ltd.

Technische Hochschule Nürnberg Georg Simon Ohm

Eolotec Gmbh

Georg-simon-ohm Hochschule Für Angewandte Wissenschaften Fachhochschule Nürnberg

Olaf Ziemann

Hans Poisel

Harry Schilling

Sven Loquai

Michael Luber

Alexander Bachmann

Martin Bloos

Rainer Engelbrecht

Juri Vinogradov

Wolfgang Losert

Mathias Pick

An optical rotary transmitter which ensures the reliable transmission of optical signals in conjunction with a comparatively simple construction comprises two parts spaced apart from one another which are rotatable relative to one another about a common centre axis and the first of which comprises a first circular light coupler () and the second of which comprises a second circular light coupler (). The light entrance and light exit surfaces of the two light couplers face one another. Each of the light couplers () consists of collimators () combined to form a respective collimator arrangement (), optical coupling elements () being connected to said collimators.

Optical rotary transmitter

A pencil has a pencil casing made of a sharpenable casing material and a core held in a central receiving bore in the casing material that extends in the longitudinal direction of the pencil. One or more optical fibers made of a sharpenable material is/are arranged in the pencil casing. The optical fiber or optical fibers extends in the longitudinal direction as well and are at least partially surrounded by the material of the pencil casing. A light entry surface of the at least one optical fiber is arranged at the rear end of the pencil casing such that a light source, which is present there, can be used to inject light to said light entry surface. The light exit surface of the optical fiber exits at the forward end of the pencil casing.

Luminous pencil

An optical fiber sensor has a measurement path and a reference path. Both paths each consist of two optical fibers and are fed with modulated light. The fibers of the reference path have a predefined difference in length, whereas the fibers of the measurement path are the same length. All fibers are at approximately the same temperature. An evaluation circuit determines the phase differences in each case between the fibers of the measurement path and of the reference path. A measurement value calculated from the phase differences is then output.

POF strain sensor using phase measurement techniques

Growing community of inventors

Nürnberg, Germany

Olaf Ziemann