ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,481,166, issued on Nov. 25, was assigned to SAMSUNG DISPLAY Co. LTD. (Gyeonggi-Do, South Korea).
"Optical system" was invented by Konstantin Mishchik (Yongin-si, South Korea), Alexander Voronov (Suwon-si, South Korea) and Hyungsik Kim (Suwon-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "An optical system includes a phase retardation plate which controls a polarization of an input laser beam, an axicon lens spaced apart from the phase retardation plate on an emitting surface side thereof to convert the input laser beam into a single first Bessel beam having a single cone angle, a collimating lens spaced apart from the axicon lens on an e...