ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,461,297, issued on Nov. 4, was assigned to University of Rochester (Rochester, N.Y.).

"One-way circularly polarized light generated by propagation through Ch-GLC films doped with light-absorbing dyes" was invented by Shaw Chen (Rochester, N.Y.), Mitchell Anthamatten (Rochester, N.Y.) and Jane Ou (Rochester, N.Y.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical system that includes a cholesteric glassy liquid crystal film doped with a dye and configured to preferentially absorb light of a first handedness, such as left-hand circularly polarized (LCP) light, but pass light of the opposite handedness, such a right-hand circularly polarized (RCP) li...