ALEXANDRIA, Va., June 18 -- United States Patent no. 12,327,976, issued on June 10, was assigned to HAMAMATSU PHOTONICS K.K. (Hamamatsu, Japan).
"External resonance-type laser module" was invented by Tadataka Edamura (Hamamatsu, Japan), Atsushi Sugiyama (Hamamatsu, Japan) and Naota Akikusa (Hamamatsu, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An external resonance-type laser module includes: a quantum cascade laser; a MEMS diffraction grating including a movable portion capable of swinging around an axis and a diffraction grating portion formed on the movable portion; a lens; a magnet; and a yoke. The MEMS diffraction grating includes a pair of coils respectively disposed on one side and the other...