ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,704,749, issued on Aug. 11, was assigned to TDK Corp. (Tokyo).

"Optical coupler, optical coupling member, light source module and optical engine" was invented by Yasuhiro Takagi (Tokyo), Hiroki Hara (Tokyo) and Atsushi Shimura (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A Y-branch type optical coupler includes an optical coupling part to which a plurality of input-side optical waveguides through which the plurality of lights propagate, and one output-side optical waveguide are connected, wherein the optical coupling part has an isosceles trapezoid shape of which the width is narrowed in a taper shape at a first angle Alpha from the input side ...