ALEXANDRIA, Va., Sept. 24 -- United States Patent no. 12,742,979, issued on Sept. 22, was assigned to IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY) (Seoul, South Korea).

"Multi-focusing lenses having multiple waveplate" was invented by Seok Ho Song (Seoul, South Korea) and Seung Min Lee (Seoul, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a multifocal lens having multiple waveplates. More particularly, the multifocal lens having multiple waveplates includes a lens having an incident surface and an opposite surface thereof, and two or more waveplates disposed on the lens in a direction of the same axis of the lens and made of a birefringent material, where...