ALEXANDRIA, Va., June 25 -- United States Patent no. 12,339,576, issued on June 24, was assigned to TDK TAIWAN CORP. (Taoyuan, Taiwan).

"Optical system" was invented by Shu-Shan Chen (Taoyuan, Taiwan), Sin-Jhong Song (Taoyuan, Taiwan) and Ko-Lun Chao (Taoyuan, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical system is provided. The optical system includes a fixed portion and a first optical assembly. The first optical assembly includes a first movable portion used for holding a first optical element, and a first driving assembly used for driving the first movable portion to move relative to the fixed portion. The fixed portion includes a first frame used for holding a second optical element, ...