ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,492,801, issued on Dec. 9, was assigned to LightnTec GmbH (Karlsruhe, Germany).
"Luminous film for radiating light in a directed manner" was invented by Lutz Nehrhoff von Holderberg (Karlsruhe, Germany) and Florian Kall (Karlsruhe, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A luminous film includes a plurality of light-emitting diodes. The luminous film has micro-optical elements which are arranged in at least one layer. A dedicated micro-optical region with corresponding micro-optical elements can be provided for each light-emitting diode, and the micro-optical elements can have different optical properties within the corresponding region de...