ALEXANDRIA, Va., March 24 -- United States Patent no. 12,585,178, issued on March 24, was assigned to PANASONIC PROJECTOR & DISPLAY Corp. (Osaka, Japan).
"Light source device and projection display apparatus" was invented by Takaaki Tanaka (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A light source device includes a red solid-state light source that emits red light, a green solid-state light source that emits green light, a blue solid-state light source that emits blue light, a second polarizing mirror that combines the red light emitted from the red solid-state light source with the green light emitted from the green solid-state light source, and a beam splitting element that splits the blue...