ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,525,768, issued on Jan. 13, was assigned to HAMAMATSU PHOTONICS K.K. (Hamamatsu, Japan).
"External resonance-type laser module" was invented by Atsushi Sugiyama (Hamamatsu, Japan), Tadataka Edamura (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; and a lens. The diffraction grating portion includes a plurality of lattice grooves arranged in a first direction and each of the p...