Stanley Electric’s new coating technology, called ASTUV (for All Surface Treatment UV), has been applied for the first time in mass production of headlamps for Yamaha vehicles. The technology is applied to headlamps for Yamaha’s Grizzly and Wolverine all-terrain vehicles (ATVs), as well as the UMAX golf cart, all sold in the U.S. market. Production of vehicles equipped with ASTUV-coated headlamps is scheduled for mid-2026.
ASTUV is an industry-first technology that combines UV-curable coatings with UV irradiation in the anti-fog coating process for automotive lamps. By eliminating conventional hot air drying, ASTUV significantly reduces energy consumption while improving product quality, including preventing water drip marks inside lamp lenses. Traditional coatings caused streak marks (drip stains) and fogging due to condensation inside the headlamp. ASTUV uses a UV-cured film resistant to water and does not contain anionic surfactants, thus preventing streaking and maintaining long-term clarity.
Conventional coatings form water droplets that scatter light, causing fogging. ASTUV-treated surfaces are hydrophilic, forming a continuous water film before droplets appear, thus preventing fog and maintaining optical performance.
