ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,455,444, issued on Oct. 28.
"Optical systems with light-expanding couplers" was invented by Jonathan B. Pfeiffer (Lafayette, Colo.), Francesco Aieta (Alameda, Calif.), Se Baek Oh (Hillsborough, Calif.), Friso Schlottau (Mead, Colo.) and Adam C. Urness (Boulder, Colo.).
According to the abstract* released by the U.S. Patent & Trademark Office: "An electronic device may include a display that generates light for an optical system that redirects the light towards an eye box. The optical system may include a waveguide, a non-diffractive input coupler, a cross coupler, and an output coupler. The cross coupler may expand the light in a first direction. The cross coupler may perform an even...