The Heat is ON

by | July 31, 2025 | Information, News

Summer isn’t the only thing that’s hot. Your vision system or laser assembly could be running hot too. Sapphire windows can take the heat better than your failing glass optics. Sapphire is useful up to 1800° while some glass optics lose their effectiveness just over 1000°.
Sapphire windows have a wide spectral range too. Our special UV grade sapphire can pass those rays of 190nm UV light at a 70% effectiveness rate. No coatings involved. The transmissivity quickly increases to 82% at 300nm and gradually plateaus at 87% from 500nm to 4500nm before it starts to tail off again.

Hot Sapphire Window

Welding systems – Molten metal viewing – Furnace sight glasses – And similar situations…
When the going gets HOT and your optical windows quit, think about calling Guild Optics and replacing those shot windows with some cool sapphire.

About Jon Lavoie

Jon Lavoie is a manager at Guild Optical Associates in Amherst, NH. He’s been helping people with their sapphire window and lens requirements since 2006. When your optical requirements call for scratch resistant, durable sapphire, think of Guild Optics and contact Jon Lavoie.