Guild Optics is your leader in sapphire manufacturing. Sapphire lenses are a great choice in the UV-through-the-near-infrared spectrum, where strength and durability are required. Radii can be held to ±0.1% on convex or concave curves, typically at 2 fringes or better with superb polished surfaces. Contact Jon today about your 10mm to 150mm lens requirements. Bk7 and quartz lenses are also available.