US Patent Issued to 3M Innovative Properties on May 19 for "Optical construction and optical system" (Minnesota Inventors)

ALEXANDRIA, Va., May 19 -- United States Patent no. 12,631,799, issued on May 19, was assigned to 3M Innovative Properties Co. (St. Paul, Minn.).

"Optical construction and optical system" was invented by Xiaoguang Sun (Woodbury, Minn.) and Zhaohui Yang (North Oaks, Minn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical construction includes a lens film and a mask layer. The lens film includes an outermost structured first major surface and an opposing outermost substantially planar second major surface. The first major surface includes a plurality of microlenses arranged along orthogonal first and second directions. The mask layer is disposed on the second major surface of the lens film and includes...