For single surface optical flats, we use clear optical Fused Silica as the material, with very low thermal expansion, high durable and resistance to abrasion. It will be easier to store the parts and long term using. Surface flatness from L/4 to L/20 available. PHYO OPTICS can still apply metallic mirror coating on the surface as requested. Logo or part number engraving on edge still available.
Optical Windows
