ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,523,871, issued on Jan. 13, was assigned to KOITO MANUFACTURING Co. LTD. (Tokyo).
"Image projection device" was invented by Kazuomi Murakami (Shizuoka, Japan) and Takanobu Toyoshima (Shizuoka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An image projection device that can effectively curb an increase in temperature of an image projecting unit due to external light while maintaining quality of a projected image is provided. The image projection device includes an image projecting unit configured to emit projection light including an image, a first freeform curved mirror reflecting the projection light incident from the image projecting unit, an ...