US Patent Issued to Sumitomo Osaka Cement on April 21 for "Lens unit, optical waveguide device, and optical transmission device" (Japanese Inventors)

ALEXANDRIA, Va., April 21 -- United States Patent no. 12,607,810, issued on April 21, was assigned to Sumitomo Osaka Cement Co. Ltd. (Tokyo).

"Lens unit, optical waveguide device, and optical transmission device" was invented by Kei Katou (Tokyo) and Hideki Ichimei (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "Mechanical strength of a lens that optically couples an optical waveguide and an optical fiber provided on a substrate is improved. A lens unit that optically couples an optical waveguide provided on a substrate and an optical fiber has a lens portion and a holding portion that holds the lens portion, and the holding portion has a thick portion, along one side surface that is not a surface thro...