ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,424,816, issued on Sept. 23, was assigned to Mitsubishi Electric Corp. (Tokyo).
"Semiconductor laser device" was invented by Naoki Kosaka (Tokyo), Ayumi Fuchida (Tokyo) and Naoki Nakamura (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A semiconductor laser device disclosed in this application is characterized; wherein one of the reflective surface and the secondary reflective surface is constituted by a dielectric multi-layer film that is formed on a PD chip for measuring a light quantity of the laser light; and wherein an inclination angle of the reflective surface is set to a value obtained by subtraction of a value that is less than an inclin...