ALEXANDRIA, Va., March 3 -- United States Patent no. 12,566,365, issued on March 3, was assigned to RICOH COMPANY LTD. (Tokyo).
"Image projection apparatus" was invented by Tomoyasu Hirasawa (Kanagawa, Japan) and Toshinobu Matsuyama (Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An image projection apparatus includes a light source module including a light source to emit excitation light, a pair of phosphor wheels, a light mixing element, an optical system to guide the excitation light emitted from the light source to the pair of phosphor wheels, and combine a pair of fluorescent lights emitted from the pair of phosphor wheels and guide combined fluorescent light to the light mixing element,...