US Patent Issued to Nokia Technologies on Sept. 1 for "Optical apparatus comprising a first light waveguide and a second light waveguide each having an in-coupling diffraction grating, modules, and devices" (Finnish Inventors)

ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,724,203, issued on Sept. 1, was assigned to Nokia Technologies Oy (Espoo, Finland).

"Optical apparatus comprising a first light waveguide and a second light waveguide each having an in-coupling diffraction grating, modules, and devices" was invented by Toni Johan Jarvenpaa (Akaa, Finland), Marja Pauliina Salmimaa (Tampere, Finland) and Jyrki Sakari Kimmel (Tampere, Finland).

According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus includes: a first light waveguide including at least: a first in-coupling diffraction grating to in-couple first input beams of light into the first light waveguide from a first light engine, a first expander to expand the fi...