ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,510,815, issued on Dec. 30, was assigned to SEIKO EPSON Corp. (Tokyo).

"Wavelength converter, light source apparatus, and projector" was invented by Koichi Akiyama (Azumino, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A wavelength converter includes, a first optical member including a first optical layer that transmits first light, a wavelength conversion layer that is disposed at a substrate, has a light incident surface, and converts the first light into second light, a light emitting portion, and a second optical member disposed at the light emitting portion and including a second optical layer that reflects the first light and transmits the...