Siemens Aktiengesellschaft

Siemens Aktiengellschaft

Atos Information Technology Gmbh

Thomas Bierhoff

Andreas Himmler

Tobias Happel

Elmar Griese

Dirk David Goldbeck

Andreas Bausewein

Juergen Schrage

Andreas Horn

Amir Wallrabenstein

Peter Vrenken

Hans-Jürgen Schrage

Matthias Benesch

Alexander Dircksen

The profile of the spinal column and changes in the profile of the spinal column are continuously measured during movement along the entire spinal column in all degrees of freedom of its deformation.

Device, sensor, sensor element and method for measuring the profile of a spinal column and for measuring changes in the profile of the spinal column

The invention relates to a method for determining the transmission behaviour of an optical waveguide with a step index profile, wherein the optical waveguide is composed of guide pieces, protruding into each other, so that the surfaces of said guide pieces comprise real and virtual surfaces, lying respectively outside and inside another guide piece. The transmission behaviour is determined by geometric ray tracing, wherein the points of intersection of a ray with the surfaces of the guide pieces are determined, which are thus defined analytically, in particular, by extrusion of cross sections along an axial trajectory. A real material transition can be determined by an iterative procedure.

Ray tracing in discontinuous multimode channel waveguides

The invention relates to a method for computationally determining optical properties of a channel waveguide, according to which, for an incident ray entering an entrance surface, the distribution of intensity over an emergence surface is determined by adjoined partial rays that possibly split up. From an incident partial ray striking the outer surface, a predetermined algorithm determines a reflected main ray and, in so far as it is necessary according to the ensuing course of events, determines a number of scattered rays of a higher order, which depict partial rays and are recursively traced further. Each partial ray is either a primary ray or a secondary ray. When the incident partial ray is a primary ray, the reflected main ray is a primary ray once again, and the scattered rays are secondary rays. During the reflection of secondary ray, only the reflected main ray is considered as the secondary ray.

Ray tracing in highly multimodal channel waveguides

Simulation of the transmission behavior of opto-electronic connections, by which the transmitter or the receiver is represented by at least two optical outputs or inputs and the optical line is represented by corresponding multi-poles, considers the spatial distribution of the emitted or received optical radiation.

Simulation of electro-optical connections that takes spatial direction into consideration

Growing community of inventors

Volkmarsen, Germany

Thomas Bierhoff