ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,411,378, issued on Sept. 9, was assigned to siOPTICA GmbH (Jena, Germany).
"Switchable light filter, lighting device and screen" was invented by Andre Heber (Jena, Germany) and Markus Klippstein (Jena, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a switchable light filter (5), comprising a first optical element (1), in turn comprising a plurality of light-absorbing transition dipole moments, so that light, which is incident into the first optical element (1), is transmitted or at least partially absorbed as a function of its direction of incidence with respect to the first optical element (1) and its polarization stat...