ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,721,526, issued on Sept. 1, was assigned to TAMRON Co. LTD. (Saitama, Japan).

"Caries detection device" was invented by Atsushi Sayama (Saitama, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A caries detection device includes: a screening optical system that irradiates a tooth with a near-infrared ray from a light source to detect transmitted light through the tooth; and a Raman scattered light detection optical system that irradiates a caries candidate area of the tooth detected from information of the transmitted light with a near-infrared ray from the light source to detect Raman scattered light generated from the caries candidate area."

The ...