ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,416,978, issued on Sept. 16, was assigned to Canon K.K. (Tokyo).

"Displacement meter configured to measure a displacement of a measurement target object and article manufacturing method" was invented by Kazuyuki Kuratomi (Tochigi, Japan) and Takayuki Uozumi (Tochigi, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A displacement meter configured to measure a displacement of a measurement target object includes an illumination assembly configured to illuminate the measurement target object, a photoelectric conversion element array configured to detect reflected light from the measurement target object, and a calculation circuit configured to calcul...