Okamoto Glass Co., Ltd. engages in the manufacture and sale of special-purpose glass for industrial use and multi-layer film evaporation products. It operates through the following business segments: Optics Business, Lighting Business, Functional Thin Film and Glass, and Others. The Optics segment offers reflectors for projectors and digital cinema projectors, fly's eye lenses, and infrared transmission filters for automobiles. The Lighting segment includes lens head and fog lens for automotive and general lighting glass. The Functional Thin Film and Glass segment manufactures and sells decorative vapor deposition on glass containers, and highly durable silver mirrors. The Others segment includes medical glass products such as dental mirrors and door glass for washing machines. The company was founded in October 1928 and is headquartered in Kashiwa, Japan.