The MidOpt LP190-39 sapphire protective window is stronger than standard glass windows. It has a highly durable surface to withstand harsh environments and is resistant to high impact, chemicals, and alkalis. The LP190 Sapphire transmits wavelengths ranging from UV, VIS, and short-wave infrared (SWIR). All MidOpt filters can also be purchased unmounted and in custom dimensions upon request from Machine Vision Direct. Technical Specifications Specifications + Useful Range Min 250 nm Useful Range Max 2300 nm Stabledge Yes Adhesive Backed Yes Tolerance 10 % Peak Transmission ≤ 90 % Surface Quality (Scratch-Dig) 80-50 Substrate Material Sapphire Filter Diameter M39 x P0.5 Product Availability + Standard Lead Time 15 Days Stock Location Built to Order Product Lifecycle Active