ALEXANDRIA, Va., April 15 -- United States Patent no. 12,599,291, issued on April 14, was assigned to Karl Storz SE & Co. KG (Tuttlingen, Germany).

"Optical instrument configured to switch between an integrated and external light source" was invented by Jonas Forster (Tuttlingen, Germany), Andreas Heni (Fridingen, Germany), Pascal Heni (Fridingen, Germany), Marcus Kupferschmid (Emmingen-Liptingen, Germany) and Daniel Ulmschneider (Tuttlingen, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is an optical instrument having a housing, wherein situated in the housing is a light source which is designed to generate a first light flux which exits at a first interface inside the housing, and a ligh...