Ohara Inc. manufactures and sells glass materials for optical and electronics applications in Japan and internationally. The company's products portfolio comprises optical glass for polished lenses, low Tg optical glasses for molded aspherical lens, ultra-low expansion glass-ceramics, clear glass ceramics, glass-ceramic substrate for DWDM thin-film filters, glass disk for magnetic head flying height testers, lithium-ion conductive glass-ceramics, i-line high homogeneity glasses, and fiber glasses for light guide. Ohara Inc. was founded in 1935 and is headquartered in Sagamihara-Shi, Japan.