ALEXANDRIA, Va., April 15 -- United States Patent no. 12,603,469, issued on April 14, was assigned to SONY GROUP Corp. (Tokyo).

"Optical resonator, constituent part of optical resonator, and laser device" was invented by Kenji Tanaka (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical resonator, a constituent part of the optical resonator, and a laser device that enable a reduction in size even if a wavelength band limiting element is disposed in the optical resonator, are provided.An optical resonator including: a laser medium that is disposed between a pair of reflection members, and emits emitted light that has been excited by excitation light that has been predetermined; and a wavelength ban...