Substrate UV grade fused silica, BK7

Surface Figure   <λ/10 @ 632.8nm Surface Quality             40-20 Chamfer 0.5mm，             45° CoatingMaterial        Thermo-Evaporation, Electron beam deposited dielectric multi-layers Clear Aperture > Central 85% of diameter Transmittance      red      green    blue T>85%      620-700nm     5-550nm      400-485nm T=50%     600±5nm   500±5nm570±5nm  510±5nm T<1%  400-550nm   430-475nm600-700nm   550-700nm Part No     FL-C-01     FL-C-02        FL-C-03