ALEXANDRIA, Va., March 26 -- United States Patent no. 12,259,569, issued on March 25, was assigned to ROLIC TECHNOLOGIES AG (Allschwil, Switzerland).
"Azimuthally modulated scattering device" was invented by David Pires (Giebenach, Switzerland) and Mohammed Ibn-Elhaj (Allschwil, Switzerland).
According to the abstract* released by the U.S. Patent & Trademark Office: "Optical elements with anisotropic, patterned surface relief microstructures in which information is encoded in the distribution of the orientation of different zones. From the analysis of the distribution of the light scattered from the element, the orientation distribution in the element and therefore the encoded information can be evaluated. The elements are particularly us...