ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,704,683, issued on Aug. 11.
"Optical systems with modulated surface relief gratings" was invented by Brandon Born (Sunnyvale, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A display may include a waveguide and a surface relief grating (SRG) structure on the waveguide. The SRG structure may perform expand image light propagating in the waveguide. The SRG structure may also couple the expanded image light out of the waveguide and towards an eye box. The SRG structure may include at least first and second SRGs that expand the image light in opposite directions. The first SRG may couple the image light expanded by the second SRG out of the waveguide...