Corning

Corning was founded in 1851 in upstate New York by Amory Houghton and has made specialty glass for nearly two centuries: the envelope for Edison's light bulb, the picture tubes for televisions, and the Pyrex labware. In 1970 its researchers managed to make optical fiber with loss low enough for telecom — the breakthrough that made fiber networks practical.

Since 2007 most people know Corning through Gorilla Glass, the scratch-resistant cover glass on smartphones. Less well known is that its ultra-low-expansion ULE glass is used in the mirrors inside EUV machines, where the slightest thermal movement would wreck the imaging. A 170-year-old glassworks thus landed in the middle of both High-NA EUV and optical interconnects.