QUARTZ LENS

Specifications: Diameter: 1.8mm-500mm Diameter tolerance: +/-0.03mm Focal length tolerance: +/-1% ~+/-5% Eccentricity: < 3' Thickness tolerance; +/-0.05mm Surface quality: 20/10 40/20 60/40 80/50 Surface Flatness: 1/10 1/4 wavelength Coating: MgF2@550nm R < 1.75% VIS 0° 425-675nm R < 0.4% VIS-NIR 400-1000nm R< 1.25% R< 0.25% @800nm NIR-I 600-1050nm R< 0.5% NIR-II 750-1550nm R< 0.7% R(ABS) < 1.0% @ 800 - 1550nm According to customer requirements for size, focal length, thickness, coating etc We accept custom-made products