ALEXANDRIA, Va., Oct. 6 -- United States Patent no. 12,752,378, issued on Oct. 6, was assigned to TOYOTA JIDOSHA K.K. (Toyota, Japan).
"Laser processing machine and method of correcting spot diameter of laser processing machine" was invented by Ryuta Matsuo (Nagakute, Japan) and Takashi Motoyoshi (Toyota, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A laser processing machine includes a lens for condensing a laser beam, an actuator changing a relative position between the lens and a workpiece to change a focal position of the laser beam, a protective glass disposed between the lens and the workpiece, a detector detecting a focal position of the laser beam, and a controller. The controller obtains a c...