ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,560,859, issued on Feb. 24, was assigned to Coretronic Corp. (Hsin-Chu, Taiwan).
"Wheel and projection device" was invented by Chia-Lun Tsai (Hsin-Chu, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A wheel includes a substrate and an optical layer. The substrate includes an inner substrate and multiple wave-shaped structures. The inner substrate has a first surface and a second surface opposite to the first surface. The optical layer is disposed on the first surface. An excitation beam is incident toward the optical layer. The wave-shaped structures are connected to and disposed around the inner substrate. A first portion of the wave-shaped stru...