US Patent Issued to RICOH on June 17 for "Light guide, optical unit, virtual image display device, and head-mounted display" (Japanese Inventor)

ALEXANDRIA, Va., June 19 -- United States Patent no. 12,332,449, issued on June 17, was assigned to RICOH COMPANY LTD. (Tokyo).

"Light guide, optical unit, virtual image display device, and head-mounted display" was invented by Takemasa Tsutsui (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A light guide includes: a first light guide portion including: an optical entrance; and multiple reflecting surfaces including at least one first reflecting surface and at least one second reflecting surface, the multiple reflecting surfaces configured to separate a light flux entered through the optical entrance, into multiple light fluxes; and a second light guide portion including an optical exit. The ...