ALEXANDRIA, Va., July 7 -- United States Patent no. 12,674,755, issued on July 7, was assigned to Asahi Kasei Microdevices Corp. (Tokyo).
"Optical density measuring apparatus" was invented by Takaaki Furuya (Tokyo) and Ryotaro Okuda (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A compact and highly accurate optical density measuring apparatus that includes an ellipsoidal mirror and a folding mirror is provided. In the optical density measuring apparatus, the shape of at least a part of the inner surface of a light guiding part is composed of a figure of a part of an ellipsoid E, and a shape of at least a part of another portion of the inner surface of the light guiding part is composed of a figure of...