75 Years Of ULE® Glass
Description
From the earliest days of refractive and reflective telescopes, Corning materials have paved the way for groundbreaking discoveries in astronomy. ULE®, or ultra-low expansion glass, is a titania-silicate glass that exhibits virtually no dimensional changes over extreme temperature variation, making it the material of choice for many astronomy applications because of its stable qualities. Corning has produced the lightweight mirror made of ULE® for the Hubble telescope and the 8-meter class monolithic mirrors for the Gemini and Subaru telescopes. While the original applications for ULE® were mainly for astronomy, the thermal stability of this glass now makes it an ideal material for extreme ultraviolet lithography (EUV) in semiconductor chip manufacturing.
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