US Patent Issued to HAMAMATSU PHOTONICS on Dec. 16 for "Quantum cascade laser device" (Japanese Inventors)

ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,500,395, issued on Dec. 16, was assigned to HAMAMATSU PHOTONICS K.K. (Hamamatsu, Japan).

"Quantum cascade laser device" was invented by Takahide Ochiai (Hamamatsu, Japan), Naota Akikusa (Hamamatsu, Japan), Kousuke Shibata (Hamamatsu, Japan) and Nobutaka Suzuki (Hamamatsu, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A quantum cascade laser device includes a QCL element; a lens; and a lens holder having a small-diameter hole, a large-diameter hole, and a counterbore surface. At least a part of a side surface of the lens is fixed to an inner surface of the large-diameter hole in a state where an edge portion of an incident surface of the lens is i...