US Patent Issued to RICOH on Feb. 17 for "Illumination device and image projection apparatus" (Japanese Inventors)

ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,554,187, issued on Feb. 17, was assigned to RICOH COMPANY LTD. (Tokyo).

"Illumination device and image projection apparatus" was invented by Kazuhiro Fujita (Tokyo), Takashi Sasaki (Kanagawa, Japan) and Momotaro Yoshida (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An illumination device includes: a light source unit including: a light source to emit a light beam; and a wavelength converter rotatable to convert a wavelength of the light beam; another light source unit including: another light source to emit another light beam; and another wavelength converter rotatable to convert another wavelength of said another light beam; a light h...