ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,397,370, issued on Aug. 26, was assigned to DISCO Corp. (Tokyo).
"Pulse duration measuring apparatus" was invented by Koji Toyama (Tokyo), Nobuyuki Kimura (Tokyo), Koichi Katayama (Tokyo) and Keiji Nomaru (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A pulse duration measuring apparatus includes a polarizing beam splitter for splitting a pulsed laser beam into a first laser beam and a second laser beam, a first mirror for reflecting the first laser beam traveling toward the polarizing beam splitter, a second mirror for reflecting the second laser beam traveling toward the polarizing beam splitter, a first quarter wavelength plate disposed betwee...