A radiation meter for radiation emerging from an optical fiber, comprising a hollow body having diffusely reflecting interior walls into which the end of the optical fiber can be introduced, and at least one detector arranged behind an opening of the hollow body. Between the end of the optical fiber...http://www.google.se/patents/US5153426?utm_source=gb-gplus-sharePatent US5153426 - Radiation meter for radiation emerging from an optical fiber with a diffusely reflecting body and cavity
