ALEXANDRIA, Va., March 24 -- United States Patent no. 12,585,173, issued on March 24, was assigned to FUJIFILM Corp. (Tokyo).
"Lens barrel" was invented by Yasuhiro Mori (Saitama, Japan) and Hajime Fukushima (Saitama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a lens barrel with which it is possible to suppress the influence of a disturbance magnetic field on a magnetic sensor. A coil that surrounds an outer periphery of a lens frame, magnetic force applying members that are disposed at a plurality of positions around the lens frame, and a magnetic sensor that detects an amount of movement of the lens frame are provided. In a plane orthogonal to an optical axis, the magnetic force apply...