Measuring system for measuring deformations of basic body with light source

摘要

The measuring system involves deformation of the basic body (2), where the difference between the light amounts falling on the light admission surfaces (17,18) alters. At least three adjacent light admission surfaces are provided, pref. at the angle points of an equilateral triangle. The three angle points are connectable respectively to their own input of the evaluation unit (30). At least four light admission surfaces are provided, adjacent pref. in two directions vertical to each other, which are connectable respectively to an own input of the evaluation unit. The light source outlet surface (7) and the admission light surfaces are designed at the ends of the light wave conductors (6,15,16).