ALEXANDRIA, Va., April 7 -- United States Patent no. 12,595,895, issued on April 7, was assigned to ABL IP Holding LLC (Atlanta).
"Multi-region optics for flat illumination" was invented by Gregory P. Frankiewicz (Elmhurst, Ill.) and Jonathan Ferry (Chicago).
According to the abstract* released by the U.S. Patent & Trademark Office: "A multi-region lighting system for flat illumination includes one or more light sources and an optic. The optic comprises a first region characterized by a first refractive-index feature and a second region characterized by a second refractive-index feature. The second region comprises a ridge structure. The first and second refractive-index features and the ridge structure are operative to produce a composit...