ALEXANDRIA, Va., July 21 -- United States Patent no. 12,686,078, issued on July 21, was assigned to HAMAMATSU PHOTONICS K.K. (Hamamatsu, Japan).
"Attenuator device and laser processing apparatus" was invented by Haruyasu Ito (Hamamatsu, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An attenuator device includes: a first window pair including a pair of first windows having a pair of first surfaces extending to form a Brewster's angle with an optical axis; a rotation holding portion which holds the first window pair to be rotatable around the optical axis; a second window pair including a pair of second windows having a pair of second surfaces extending to form a Brewster's angle with the optical axis; ...