Glass doesn’t transmit the wavelengths that thermal camera is looking for, so the lenses need to be made of either germanium or zinc selenide. These aren’t exactly the kind of thing you can ...

We produce CVD Laser Grade ZnSe. Your source for high quality CVD Zinc Selenide, Zinc Sulfide, and Germanium (Znse, ZnS, Ge). Phoenix Infrared offers blanks, polished parts and coated optics.