ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,453,460, issued on Oct. 28, was assigned to Evident Corp. (Nagano, Japan).

"Movable optical unit, optical adapter, and endoscope apparatus" was invented by Kenichi Zen (Tachikawa, Japan) and Masayuki Hio (Hachioji, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A movable optical unit configured to be rotatable around an axis by an electromagnet includes a fixed shaft, a bearing through which the fixed shaft is inserted and which is polarized in a direction orthogonal to a long axis of the fixed shaft, a holding frame that is provided to be rotatable around the fixed shaft and holds at least one optical member, and a pair of arm members extending o...