We have fabricated a novel antireflective technology that utilizes a nanostructured surface. A unique aspect of this approach is the possibility of fabrication of optical lens incorporating this antireflective technology using injection molding. Thus, low-cost, large area, and mass production of components has become possible. An antireflective nanostructure was prepared using metallic nano-particles with an average particle diameter of 50 nm and a spacing of 100 nm as masks for etching. By using this technique, a complicated surface structure can be easily made with strong antireflective characteristics by all-dry process. This process is expected to be applicable to a wide range of mass-produced optical elements such as digital camera lens, car control panels and flat panel displays.