ALEXANDRIA, Va., June 25 -- United States Patent no. 12,339,573, issued on June 24, was assigned to SEIKO EPSON Corp. (Tokyo).
"Light source device and projector" was invented by Takuo Yoneyama (Azumino, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A light source device includes a first light source configured to emit first light having a first wavelength, a second light source configured to emit second light, a wavelength conversion element having a first surface which the second light emitted from the second light source enters and a second surface located at an opposite side to the first surface, and configured to convert the second light into third light having a second wavelength, an optical mem...