Calcium fluoride, magnesium fluoride window film window film window film precision fused silica window film

Window film (windows): precision window film: material including optical glass, H-K9L, fused silica (JGS1), Corning 7980, calcium fluoride, magnesium, silicon, germanium, and other dimensional tolerances of + 0.0 / -0.2. mm Thickness Tolerance ± 0.2mm Clear Aperture> 90% parallel standard accuracy: <1 minute precision: <10 seconds Surface quality standard accuracy: 60/40 High precision: 20/10 wavefront distortion standard accuracy: <λ per 25mm @ 633nm precision: <λ / 10 per 25mm @ 633nm chamfer protective <0.2mmx45 of coating according to customer needs