Wookyung Optics Co., Ltd. is a company that produces world-class advanced electronic optical equipment based on integrated technologies of Opto-Mechatronics (optics, mechanics, and electronics).

In the defense sector, as a nationally designated key defense contractor, the company manufactures dot sights and magnifiers for rifles, as well as fire control systems for various artillery, including direction-range finders for K-9 self-propelled howitzers, towed artillery, and mortars. The company also produces night vision devices and daytime observation equipment.