ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,546,995, issued on Feb. 10, was assigned to Nokia Technologies Oy (Espoo, Finland).
"Optical apparatuses, systems and methods" was invented by Toni Jarvenpaa (Akaa, Finland), Jyrki Sakari Kimmel (Tampere, Finland) and Marja Salmimaa (Tampere, Finland).
According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus includes: first and second light guides, each light guide respectively including: a plurality of diffractive optical elements configured to: in-couple one or more input beams of light into the light guides, expand the input beams of light, and out-couple the expanded beams of light from the light guides to provide expanded output light beams; where...