Patent ID: 7658548

Claim:
A coupling device for a light guide, comprising: a) a first coupling element with a first passage for holding a light guide, having an end section with a free end and an intermediate section, following the end section, and b) a second coupling element with a second passage for holding and/or fixing the intermediate section of the light guide; wherein: c) the first coupling element and the second coupling element can be detachably joined or are detachably joined in a coupled state; d) in the coupled state, the first passage and the second passage form a common passage and/or have or surround a common longitudinal axis; and e) the first passage has a funnel-shaped section that, in the coupled state, faces the second passage and widens toward the second passage; wherein: f) at least in the region of the funnel-shaped section, the first coupling element is formed or made from ceramic material at least on its inner surface; and g) the first coupling element comprises two or more prefabricated parts fastened on or to one another, one part comprising the funnel-shaped section of the first passage and being produced or formed from the ceramic material at least on the inner surface thereof and the materials for the remaining parts of the first coupling element are metal.